Source/WebCore/rendering/RenderThemeMac.mm - WebKit - Git at Google

 /*
  * Copyright (C) 2005-2017 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */

 #import "config.h"
 #import "RenderThemeMac.h"

 #if PLATFORM(MAC)

 #import "BitmapImage.h"
 #import "CSSValueKeywords.h"
 #import "CSSValueList.h"
 #import "Color.h"
 #import "ColorMac.h"
 #import "Document.h"
 #import "Element.h"
 #import "FileList.h"
 #import "FloatRoundedRect.h"
 #import "FocusController.h"
 #import "Frame.h"
 #import "FrameSelection.h"
 #import "FrameView.h"
 #import "GeometryUtilities.h"
 #import "GraphicsContext.h"
 #import "HTMLAttachmentElement.h"
 #import "HTMLInputElement.h"
 #import "HTMLMediaElement.h"
 #import "HTMLNames.h"
 #import "HTMLPlugInImageElement.h"
 #import "Icon.h"
 #import "Image.h"
 #import "ImageBuffer.h"
 #import "LocalCurrentGraphicsContext.h"
 #import "LocalDefaultSystemAppearance.h"
 #import "LocalizedStrings.h"
 #import "MediaControlElements.h"
 #import "Page.h"
 #import "PaintInfo.h"
 #import "PathUtilities.h"
 #import "RenderAttachment.h"
 #import "RenderLayer.h"
 #import "RenderMedia.h"
 #import "RenderMediaControlElements.h"
 #import "RenderProgress.h"
 #import "RenderSlider.h"
 #import "RenderSnapshottedPlugIn.h"
 #import "RenderView.h"
 #import "RuntimeEnabledFeatures.h"
 #import "SharedBuffer.h"
 #import "StringTruncator.h"
 #import "StyleResolver.h"
 #import "ThemeMac.h"
 #import "TimeRanges.h"
 #import "UTIUtilities.h"
 #import "UserAgentScripts.h"
 #import "UserAgentStyleSheets.h"
 #import <Carbon/Carbon.h>
 #import <Cocoa/Cocoa.h>
 #import <CoreServices/CoreServices.h>
 #import <math.h>
 #import <pal/spi/cg/CoreGraphicsSPI.h>
 #import <pal/spi/cocoa/NSColorSPI.h>
 #import <pal/spi/mac/NSCellSPI.h>
 #import <pal/spi/mac/NSSharingServicePickerSPI.h>
 #import <wtf/MathExtras.h>
 #import <wtf/ObjCRuntimeExtras.h>
 #import <wtf/RetainPtr.h>
 #import <wtf/StdLibExtras.h>
 #import <wtf/text/StringBuilder.h>

 #if ENABLE(METER_ELEMENT)
 #import "RenderMeter.h"
 #import "HTMLMeterElement.h"
 #endif

 #if ENABLE(SERVICE_CONTROLS)

 // FIXME: This should go into an SPI.h file in the spi directory.
 #if USE(APPLE_INTERNAL_SDK)
 #import <AppKit/AppKitDefines_Private.h>
 #import <AppKit/NSServicesRolloverButtonCell.h>
 #else
 #define APPKIT_PRIVATE_CLASS
 @interface NSServicesRolloverButtonCell : NSButtonCell
 @end
 #endif

 // FIXME: This should go into an SPI.h file in the spi directory.
 @interface NSServicesRolloverButtonCell ()
 + (NSServicesRolloverButtonCell *)serviceRolloverButtonCellForStyle:(NSSharingServicePickerStyle)style;
 - (NSRect)rectForBounds:(NSRect)bounds preferredEdge:(NSRectEdge)preferredEdge;
 @end

 #endif // ENABLE(SERVICE_CONTROLS)

 // FIXME: This should go into an SPI.h file in the spi directory.
 @interface NSTextFieldCell ()
 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus;
 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus maskOnly:(BOOL)maskOnly;
 @end

 // FIXME: This should go into an SPI.h file in the spi directory.
 @interface NSSearchFieldCell ()
 @property (getter=isCenteredLook) BOOL centeredLook;
 @end

 static const Seconds progressAnimationFrameRate = 33_ms; // 30 fps
 static const double progressAnimationNumFrames = 256;

 @interface WebCoreRenderThemeNotificationObserver : NSObject
 @end

 @implementation WebCoreRenderThemeNotificationObserver

 - (id)init
 {
     self = [super init];
     if (!self)
         return nil;

     [[NSNotificationCenter defaultCenter] addObserver:self
         selector:@selector(systemColorsDidChange:) name:NSSystemColorsDidChangeNotification object:nil];

     [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self
         selector:@selector(systemColorsDidChange:) name:NSWorkspaceAccessibilityDisplayOptionsDidChangeNotification object:nil];

     return self;
 }

 - (void)systemColorsDidChange:(NSNotification *)notification
 {
     UNUSED_PARAM(notification);
     WebCore::RenderTheme::singleton().platformColorsDidChange();
 }

 @end

 @interface WebCoreTextFieldCell : NSTextFieldCell
 @end

 @implementation WebCoreTextFieldCell

 - (CFDictionaryRef)_adjustedCoreUIDrawOptionsForDrawingBordersOnly:(CFDictionaryRef)defaultOptions
 {
 #if HAVE(OS_DARK_MODE_SUPPORT)
     // Dark mode controls don't have borders, just a semi-transparent background of shadows.
     // In the dark mode case we can't disable borders, or we will not paint anything for the control.
     NSAppearanceName appearance = [self.controlView.effectiveAppearance bestMatchFromAppearancesWithNames:@[ NSAppearanceNameAqua, NSAppearanceNameDarkAqua ]];
     if ([appearance isEqualToString:NSAppearanceNameDarkAqua])
         return defaultOptions;
 #endif

     // FIXME: This is a workaround for <rdar://problem/11385461>. When that bug is resolved, we should remove this code,
     // as well as the internal method overrides below.
     CFMutableDictionaryRef coreUIDrawOptions = CFDictionaryCreateMutableCopy(NULL, 0, defaultOptions);
     CFDictionarySetValue(coreUIDrawOptions, CFSTR("borders only"), kCFBooleanTrue);
     CFAutorelease(coreUIDrawOptions);
     return coreUIDrawOptions;
 }

 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus
 {
     return [self _adjustedCoreUIDrawOptionsForDrawingBordersOnly:[super _coreUIDrawOptionsWithFrame:cellFrame inView:controlView includeFocus:includeFocus]];
 }

 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus maskOnly:(BOOL)maskOnly
 {
     return [self _adjustedCoreUIDrawOptionsForDrawingBordersOnly:[super _coreUIDrawOptionsWithFrame:cellFrame inView:controlView includeFocus:includeFocus maskOnly:maskOnly]];
 }

 @end

 @interface WebCoreRenderThemeBundle : NSObject
 @end

 @implementation WebCoreRenderThemeBundle
 @end

 #if ENABLE(DATALIST_ELEMENT)

 static const CGFloat listButtonWidth = 16.0f;
 static const CGFloat listButtonCornerRadius = 5.0f;

 @interface WebListButtonCell : NSCell
 @end

 @implementation WebListButtonCell
 - (void)drawWithFrame:(NSRect)cellFrame inView:(__unused NSView *)controlView
 {
     CGFloat listButtonCornerRadius = 5.0f;
     NSPoint topLeft = NSMakePoint(NSMinX(cellFrame), NSMinY(cellFrame));
     NSPoint topRight = NSMakePoint(NSMaxX(cellFrame), NSMinY(cellFrame));
     NSPoint bottomRight = NSMakePoint(NSMaxX(cellFrame), NSMaxY(cellFrame));
     NSPoint bottomLeft = NSMakePoint(NSMinX(cellFrame), NSMaxY(cellFrame));

     NSBezierPath *path = [NSBezierPath bezierPath];
     [path moveToPoint:topLeft];

     [path lineToPoint:NSMakePoint(topRight.x - listButtonCornerRadius, topRight.y)];
     [path curveToPoint:NSMakePoint(topRight.x, topRight.y + listButtonCornerRadius) controlPoint1:topRight controlPoint2:topRight];

     [path lineToPoint:NSMakePoint(bottomRight.x, bottomRight.y - listButtonCornerRadius)];
     [path curveToPoint:NSMakePoint(bottomRight.x - listButtonCornerRadius, bottomRight.y) controlPoint1:bottomRight controlPoint2:bottomRight];

     [path lineToPoint:bottomLeft];
     [path lineToPoint:topLeft];

     if ([self userInterfaceLayoutDirection] == NSUserInterfaceLayoutDirectionRightToLeft) {
         NSAffineTransform *transform = [NSAffineTransform transform];
         [transform translateXBy:NSMidX(cellFrame) yBy:NSMidY(cellFrame)];
         [transform rotateByDegrees:180];
         [transform translateXBy:-1 * NSMidX(cellFrame) yBy:-1 * NSMidY(cellFrame)];
         [path transformUsingAffineTransform:transform];
     }

     // FIXME: Obtain the gradient colors from CoreUI or AppKit
     RetainPtr<NSGradient> gradient;
 #if HAVE(OS_DARK_MODE_SUPPORT)
     NSUserAccentColor accentColor = NSColorGetUserAccentColor();
     if (accentColor == NSUserAccentColorRed)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(212.0 / 255) green:(122.0 / 255) blue:(117.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(189.0 / 255) green:(34.0 / 255) blue:(23.0 / 255) alpha:1.0]]);
     else if (accentColor == NSUserAccentColorOrange)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(242.0 / 255) green:(185.0 / 255) blue:(113.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(242.0 / 255) green:(145.0 / 255) blue:(17.0 / 255) alpha:1.0]]);
     else if (accentColor == NSUserAccentColorYellow)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(241.0 / 255) green:(212.0 / 255) blue:(119.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(239.0 / 255) green:(193.0 / 255) blue:(27.0 / 255) alpha:1.0]]);
     else if (accentColor == NSUserAccentColorGreen)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(132.0 / 255) green:(186.0 / 255) blue:(120.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(46.0 / 255) green:(145.0 / 255) blue:(30.0 / 255) alpha:1.0]]);
     else if (accentColor == NSUserAccentColorPurple)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(178.0 / 255) green:(128.0 / 255) blue:(175.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(130.0 / 255) green:(43.0 / 255) blue:(123.0 / 255) alpha:1.0]]);
     else if (accentColor == NSUserAccentColorPink)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(225.0 / 255) green:(126.0 / 255) blue:(165.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(211.0 / 255) green:(42.0 / 255) blue:(105.0 / 255) alpha:1.0]]);
     else if (accentColor == NSUserAccentColorNoColor)
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(177.0 / 255) green:(177.0 / 255) blue:(182.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(145.0 / 255) green:(145.0 / 255) blue:(150.0 / 255) alpha:1.0]]);
     else
 #endif
         gradient = adoptNS([[NSGradient alloc] initWithStartingColor:[NSColor colorWithRed:(114.0 / 255) green:(164.0 / 255) blue:(243.0 / 255) alpha:1.0] endingColor:[NSColor colorWithRed:(45.0 / 255) green:(117.0 / 255) blue:(246.0 / 255) alpha:1.0]]);

     [gradient drawInBezierPath:path angle:90];
     if ([self isHighlighted]) {
         NSColor *overlay = [NSColor colorWithWhite:0 alpha:0.1];
         [overlay setFill];
         [path fill];
     }
 }
 @end

 #endif // ENABLE(DATALIST_ELEMENT)

 namespace WebCore {

 using namespace HTMLNames;

 enum {
     topMargin,
     rightMargin,
     bottomMargin,
     leftMargin
 };

 enum {
     topPadding,
     rightPadding,
     bottomPadding,
     leftPadding
 };

 RenderTheme& RenderTheme::singleton()
 {
     static NeverDestroyed<RenderThemeMac> theme;
     return theme;
 }

 RenderThemeMac::RenderThemeMac()
     : m_notificationObserver(adoptNS([[WebCoreRenderThemeNotificationObserver alloc] init]))
 {
 }

 NSView *RenderThemeMac::documentViewFor(const RenderObject& o) const
 {
     LocalDefaultSystemAppearance localAppearance(o.useDarkAppearance());
     ControlStates states(extractControlStatesForRenderer(o));
     return ThemeMac::ensuredView(&o.view().frameView(), states);
 }

 #if ENABLE(VIDEO)

 String RenderThemeMac::mediaControlsStyleSheet()
 {
 #if ENABLE(MEDIA_CONTROLS_SCRIPT)
     if (m_legacyMediaControlsStyleSheet.isEmpty())
         m_legacyMediaControlsStyleSheet = [NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@"mediaControlsApple" ofType:@"css"] encoding:NSUTF8StringEncoding error:nil];
     return m_legacyMediaControlsStyleSheet;
 #else
     return emptyString();
 #endif
 }

 String RenderThemeMac::modernMediaControlsStyleSheet()
 {
 #if ENABLE(MEDIA_CONTROLS_SCRIPT)
     if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled()) {
         if (m_mediaControlsStyleSheet.isEmpty())
             m_mediaControlsStyleSheet = [NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@"modern-media-controls" ofType:@"css" inDirectory:@"modern-media-controls"] encoding:NSUTF8StringEncoding error:nil];
         return m_mediaControlsStyleSheet;
     }
     return emptyString();
 #else
     return emptyString();
 #endif
 }

 void RenderThemeMac::purgeCaches()
 {
     m_legacyMediaControlsScript.clearImplIfNotShared();
     m_mediaControlsScript.clearImplIfNotShared();
     m_legacyMediaControlsStyleSheet.clearImplIfNotShared();
     m_mediaControlsStyleSheet.clearImplIfNotShared();

     RenderTheme::purgeCaches();
 }

 String RenderThemeMac::mediaControlsScript()
 {
 #if ENABLE(MEDIA_CONTROLS_SCRIPT)
     if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled()) {
         if (m_mediaControlsScript.isEmpty()) {
             NSBundle *bundle = [NSBundle bundleForClass:[WebCoreRenderThemeBundle class]];
             NSString *localizedStrings = [NSString stringWithContentsOfFile:[bundle pathForResource:@"modern-media-controls-localized-strings" ofType:@"js"] encoding:NSUTF8StringEncoding error:nil];
             NSString *script = [NSString stringWithContentsOfFile:[bundle pathForResource:@"modern-media-controls" ofType:@"js" inDirectory:@"modern-media-controls"] encoding:NSUTF8StringEncoding error:nil];
             m_mediaControlsScript = makeString(String { localizedStrings }, String { script });
         }
         return m_mediaControlsScript;
     }

     if (m_legacyMediaControlsScript.isEmpty()) {
         NSBundle *bundle = [NSBundle bundleForClass:[WebCoreRenderThemeBundle class]];
         NSString *localizedStrings = [NSString stringWithContentsOfFile:[bundle pathForResource:@"mediaControlsLocalizedStrings" ofType:@"js"] encoding:NSUTF8StringEncoding error:nil];
         NSString *script = [NSString stringWithContentsOfFile:[bundle pathForResource:@"mediaControlsApple" ofType:@"js"] encoding:NSUTF8StringEncoding error:nil];
         m_legacyMediaControlsScript = makeString(String { localizedStrings }, String { script });
     }
     return m_legacyMediaControlsScript;
 #else
     return emptyString();
 #endif
 }

 String RenderThemeMac::mediaControlsBase64StringForIconNameAndType(const String& iconName, const String& iconType)
 {
 #if ENABLE(MEDIA_CONTROLS_SCRIPT)
     if (!RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled())
         return emptyString();

     NSString *directory = @"modern-media-controls/images";
     NSBundle *bundle = [NSBundle bundleForClass:[WebCoreRenderThemeBundle class]];
     return [[NSData dataWithContentsOfFile:[bundle pathForResource:iconName ofType:iconType inDirectory:directory]] base64EncodedStringWithOptions:0];
 #else
     return emptyString();
 #endif
 }

 #endif // ENABLE(VIDEO)

 #if ENABLE(SERVICE_CONTROLS)

 String RenderThemeMac::imageControlsStyleSheet() const
 {
     return String(imageControlsMacUserAgentStyleSheet, sizeof(imageControlsMacUserAgentStyleSheet));
 }

 #endif

 Color RenderThemeMac::platformActiveSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
 {
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor selectedTextBackgroundColor]);
 }

 Color RenderThemeMac::platformInactiveSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
 {
 #if HAVE(OS_DARK_MODE_SUPPORT)
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor unemphasizedSelectedTextBackgroundColor]);
 #else
     UNUSED_PARAM(options);
     return colorFromNSColor([NSColor secondarySelectedControlColor]);
 #endif
 }

 Color RenderThemeMac::transformSelectionBackgroundColor(const Color& color, OptionSet<StyleColor::Options> options) const
 {
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     if (localAppearance.usingDarkAppearance()) {
         // Use an alpha value that is similar to results from blendWithWhite() on light colors.
         static const float darkAppearanceAlpha = 0.8;
         return !color.isOpaque() ? color : color.colorWithAlpha(darkAppearanceAlpha);
     }

     return RenderTheme::transformSelectionBackgroundColor(color, options);
 }

 bool RenderThemeMac::supportsSelectionForegroundColors(OptionSet<StyleColor::Options> options) const
 {
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return localAppearance.usingDarkAppearance();
 }

 Color RenderThemeMac::platformActiveSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
 {
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     if (localAppearance.usingDarkAppearance())
         return colorFromNSColor([NSColor selectedTextColor]);
     return { };
 }

 Color RenderThemeMac::platformInactiveSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
 {
 #if HAVE(OS_DARK_MODE_SUPPORT)
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     if (localAppearance.usingDarkAppearance())
         return colorFromNSColor([NSColor unemphasizedSelectedTextColor]);
     return { };
 #else
     UNUSED_PARAM(options);
     return { };
 #endif
 }

 Color RenderThemeMac::platformActiveListBoxSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
 {
 #if HAVE(OS_DARK_MODE_SUPPORT)
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor selectedContentBackgroundColor]);
 #else
     UNUSED_PARAM(options);
     return colorFromNSColor([NSColor alternateSelectedControlColor]);
 #endif
 }

 Color RenderThemeMac::platformInactiveListBoxSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
 {
 #if HAVE(OS_DARK_MODE_SUPPORT)
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor unemphasizedSelectedContentBackgroundColor]);
 #else
     UNUSED_PARAM(options);
     return colorFromNSColor([NSColor secondarySelectedControlColor]);
 #endif
 }

 Color RenderThemeMac::platformActiveListBoxSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
 {
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor alternateSelectedControlTextColor]);
 }

 Color RenderThemeMac::platformInactiveListBoxSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
 {
 #if HAVE(OS_DARK_MODE_SUPPORT)
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor unemphasizedSelectedTextColor]);
 #else
     UNUSED_PARAM(options);
     return colorFromNSColor([NSColor selectedControlTextColor]);
 #endif
 }

 Color RenderThemeMac::platformFocusRingColor(OptionSet<StyleColor::Options> options) const
 {
     if (usesTestModeFocusRingColor())
         return oldAquaFocusRingColor();
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     // The color is expected to be opaque, since CoreGraphics will apply opacity when drawing (because opacity is normally animated).
     return colorWithOverrideAlpha(colorFromNSColor([NSColor keyboardFocusIndicatorColor]).rgb(), 1);
 }

 Color RenderThemeMac::platformActiveTextSearchHighlightColor(OptionSet<StyleColor::Options> options) const
 {
 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
     LocalDefaultSystemAppearance localAppearance(options.contains(StyleColor::Options::UseDarkAppearance));
     return colorFromNSColor([NSColor findHighlightColor]);
 #else
     UNUSED_PARAM(options);
     return Color(255, 255, 0); // Yellow.
 #endif
 }

 Color RenderThemeMac::platformInactiveTextSearchHighlightColor(OptionSet<StyleColor::Options> options) const
 {
     // The inactive color is normally used, since no legacy WebKit client marks a text match as active.
     // So just return the same color for both states.
     return platformActiveTextSearchHighlightColor(options);
 }

 static FontSelectionValue toFontWeight(NSInteger appKitFontWeight)
 {
     ASSERT(appKitFontWeight > 0 && appKitFontWeight < 15);
     if (appKitFontWeight > 14)
         appKitFontWeight = 14;
     else if (appKitFontWeight < 1)
         appKitFontWeight = 1;

     static const FontSelectionValue fontWeights[] = {
         FontSelectionValue(100),
         FontSelectionValue(100),
         FontSelectionValue(200),
         FontSelectionValue(300),
         FontSelectionValue(400),
         FontSelectionValue(500),
         FontSelectionValue(600),
         FontSelectionValue(600),
         FontSelectionValue(700),
         FontSelectionValue(800),
         FontSelectionValue(800),
         FontSelectionValue(900),
         FontSelectionValue(900),
         FontSelectionValue(900)
     };
     return fontWeights[appKitFontWeight - 1];
 }

 void RenderThemeMac::updateCachedSystemFontDescription(CSSValueID cssValueId, FontCascadeDescription& fontDescription) const
 {
     NSFont* font;
     // System-font-ness can't be encapsulated by simply a font name. Instead, we must use a token
     // which FontCache will look for.
     // Make sure we keep this list of possible tokens in sync with FontCascade::primaryFontIsSystemFont()
     AtomString fontName;
     switch (cssValueId) {
         case CSSValueSmallCaption:
             font = [NSFont systemFontOfSize:[NSFont smallSystemFontSize]];
             break;
         case CSSValueMenu:
             font = [NSFont menuFontOfSize:[NSFont systemFontSize]];
             fontName = AtomString("-apple-menu", AtomString::ConstructFromLiteral);
             break;
         case CSSValueStatusBar:
             font = [NSFont labelFontOfSize:[NSFont labelFontSize]];
             fontName = AtomString("-apple-status-bar", AtomString::ConstructFromLiteral);
             break;
         case CSSValueWebkitMiniControl:
             font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSControlSizeMini]];
             break;
         case CSSValueWebkitSmallControl:
             font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSControlSizeSmall]];
             break;
         case CSSValueWebkitControl:
             font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSControlSizeRegular]];
             break;
         default:
             font = [NSFont systemFontOfSize:[NSFont systemFontSize]];
     }

     if (!font)
         return;

     if (fontName.isNull())
         fontName = AtomString("system-ui", AtomString::ConstructFromLiteral);

     NSFontManager *fontManager = [NSFontManager sharedFontManager];
     fontDescription.setIsAbsoluteSize(true);
     fontDescription.setOneFamily(fontName);
     fontDescription.setSpecifiedSize([font pointSize]);
     fontDescription.setWeight(toFontWeight([fontManager weightOfFont:font]));
     fontDescription.setIsItalic([fontManager traitsOfFont:font] & NSItalicFontMask);
 }

 static RGBA32 menuBackgroundColor()
 {
     RetainPtr<NSBitmapImageRep> offscreenRep = adoptNS([[NSBitmapImageRep alloc] initWithBitmapDataPlanes:nil pixelsWide:1 pixelsHigh:1
         bitsPerSample:8 samplesPerPixel:4 hasAlpha:YES isPlanar:NO colorSpaceName:NSDeviceRGBColorSpace bytesPerRow:4 bitsPerPixel:32]);

     CGContextRef bitmapContext = [NSGraphicsContext graphicsContextWithBitmapImageRep:offscreenRep.get()].CGContext;
     const CGRect rect = CGRectMake(0, 0, 1, 1);

     HIThemeMenuDrawInfo drawInfo;
     drawInfo.version =  0;
     drawInfo.menuType = kThemeMenuTypePopUp;

     HIThemeDrawMenuBackground(&rect, &drawInfo, bitmapContext, kHIThemeOrientationInverted);

     NSUInteger pixel[4];
     [offscreenRep getPixel:pixel atX:0 y:0];

     return makeRGBA(pixel[0], pixel[1], pixel[2], pixel[3]);
 }

 Color RenderThemeMac::systemColor(CSSValueID cssValueID, OptionSet<StyleColor::Options> options) const
 {
     const bool useSystemAppearance = options.contains(StyleColor::Options::UseSystemAppearance);
     const bool useDarkAppearance = options.contains(StyleColor::Options::UseDarkAppearance);
     const bool forVisitedLink = options.contains(StyleColor::Options::ForVisitedLink);

     auto& cache = colorCache(options);

     if (useSystemAppearance) {
         // Special handling for links and other system colors when the system appearance is desired.
         auto systemAppearanceColor = [useDarkAppearance] (Color& color, SEL selector) -> Color {
             if (!color.isValid()) {
                 LocalDefaultSystemAppearance localAppearance(useDarkAppearance);
                 auto systemColor = wtfObjCMsgSend<NSColor *>([NSColor class], selector);
                 color = semanticColorFromNSColor(systemColor);
             }

             return color;
         };

         switch (cssValueID) {
         // Web views that want system appearance get the system version of link colors, which differ from the HTML spec.
         case CSSValueWebkitLink:
             if (forVisitedLink)
                 return systemAppearanceColor(cache.systemVisitedLinkColor, @selector(systemPurpleColor));
             return systemAppearanceColor(cache.systemLinkColor, @selector(linkColor));

         case CSSValueWebkitActivelink:
             // FIXME: Use a semantic system color for this, instead of systemRedColor. <rdar://problem/39256684>
             return systemAppearanceColor(cache.systemActiveLinkColor, @selector(systemRedColor));

         // The following colors would expose user appearance preferences to the web, and could be used for fingerprinting.
         // These should only be available when the web view is wanting the system appearance.
         case CSSValueWebkitFocusRingColor:
         case CSSValueActiveborder:
             return focusRingColor(options);

         case CSSValueAppleSystemControlAccent:
 #if HAVE(OS_DARK_MODE_SUPPORT)
             return systemAppearanceColor(cache.systemControlAccentColor, @selector(controlAccentColor));
 #else
             return systemAppearanceColor(cache.systemControlAccentColor, @selector(alternateSelectedControlColor));
 #endif

         case CSSValueAppleSystemSelectedContentBackground:
             return activeListBoxSelectionBackgroundColor(options);

         case CSSValueAppleSystemSelectedTextBackground:
         case CSSValueHighlight:
             return activeSelectionBackgroundColor(options);

         default:
             // Handle other system colors below, that don't need special system appearance handling.
             break;
         }
     } else if (forVisitedLink && cssValueID == CSSValueWebkitLink) {
         // The system color cache below can't handle visited links. The only color value
         // that cares about visited links is CSSValueWebkitLink, so handle it here.
         return RenderTheme::systemColor(cssValueID, options);
     }

     ASSERT(!forVisitedLink);

     return cache.systemStyleColors.ensure(cssValueID, [this, cssValueID, options, useDarkAppearance] () -> Color {
         LocalDefaultSystemAppearance localAppearance(useDarkAppearance);

         auto selectCocoaColor = [cssValueID] () -> SEL {
             switch (cssValueID) {
             case CSSValueActivecaption:
                 return @selector(windowFrameTextColor);
             case CSSValueAppworkspace:
                 return @selector(headerColor);
             case CSSValueButtonhighlight:
                 return @selector(controlHighlightColor);
             case CSSValueButtonshadow:
                 return @selector(controlShadowColor);
             case CSSValueButtontext:
                 return @selector(controlTextColor);
             case CSSValueCaptiontext:
                 return @selector(textColor);
             case CSSValueGraytext:
                 return @selector(disabledControlTextColor);
             case CSSValueHighlighttext:
                 return @selector(selectedTextColor);
             case CSSValueInactiveborder:
                 return @selector(controlBackgroundColor);
             case CSSValueInactivecaption:
                 return @selector(controlBackgroundColor);
             case CSSValueInactivecaptiontext:
                 return @selector(textColor);
             case CSSValueInfotext:
                 return @selector(textColor);
             case CSSValueMenutext:
                 return @selector(selectedMenuItemTextColor);
             case CSSValueScrollbar:
                 return @selector(scrollBarColor);
             case CSSValueText:
                 return @selector(textColor);
             case CSSValueThreeddarkshadow:
                 return @selector(controlDarkShadowColor);
             case CSSValueThreedshadow:
                 return @selector(shadowColor);
             case CSSValueThreedhighlight:
                 return @selector(highlightColor);
             case CSSValueThreedlightshadow:
                 return @selector(controlLightHighlightColor);
             case CSSValueWindow:
                 return @selector(windowBackgroundColor);
             case CSSValueWindowframe:
                 return @selector(windowFrameColor);
             case CSSValueWindowtext:
                 return @selector(windowFrameTextColor);
             case CSSValueAppleSystemHeaderText:
                 return @selector(headerTextColor);
             case CSSValueAppleSystemBackground:
             case CSSValueAppleSystemSecondaryBackground:
             case CSSValueAppleSystemTertiaryBackground:
             case CSSValueAppleSystemGroupedBackground:
             case CSSValueAppleSystemSecondaryGroupedBackground:
             case CSSValueAppleSystemTertiaryGroupedBackground:
             case CSSValueAppleSystemTextBackground:
                 return @selector(textBackgroundColor);
             case CSSValueAppleSystemControlBackground:
 #if HAVE(OS_DARK_MODE_SUPPORT)
             case CSSValueWebkitControlBackground:
 #endif
                 return @selector(controlBackgroundColor);
             case CSSValueAppleSystemAlternateSelectedText:
                 return @selector(alternateSelectedControlTextColor);
             case CSSValueAppleSystemUnemphasizedSelectedContentBackground:
 #if HAVE(OS_DARK_MODE_SUPPORT)
                 return @selector(unemphasizedSelectedContentBackgroundColor);
 #else
                 return @selector(secondarySelectedControlColor);
 #endif
             case CSSValueAppleSystemSelectedText:
                 return @selector(selectedTextColor);
             case CSSValueAppleSystemUnemphasizedSelectedText:
 #if HAVE(OS_DARK_MODE_SUPPORT)
                 return @selector(unemphasizedSelectedTextColor);
 #else
                 return @selector(textColor);
 #endif
             case CSSValueAppleSystemUnemphasizedSelectedTextBackground:
 #if HAVE(OS_DARK_MODE_SUPPORT)
                 return @selector(unemphasizedSelectedTextBackgroundColor);
 #else
                 return @selector(secondarySelectedControlColor);
 #endif
             case CSSValueAppleSystemPlaceholderText:
                 return @selector(placeholderTextColor);
             case CSSValueAppleSystemFindHighlightBackground:
 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
                 return @selector(findHighlightColor);
 #else
                 // Handled below.
                 return nullptr;
 #endif
             case CSSValueAppleSystemContainerBorder:
 #if HAVE(OS_DARK_MODE_SUPPORT)
                 return @selector(containerBorderColor);
 #else
                 // Handled below.
                 return nullptr;
 #endif
             case CSSValueAppleSystemLabel:
                 return @selector(labelColor);
             case CSSValueAppleSystemSecondaryLabel:
                 return @selector(secondaryLabelColor);
             case CSSValueAppleSystemTertiaryLabel:
                 return @selector(tertiaryLabelColor);
             case CSSValueAppleSystemQuaternaryLabel:
                 return @selector(quaternaryLabelColor);
             case CSSValueAppleSystemGrid:
                 return @selector(gridColor);
             case CSSValueAppleSystemSeparator:
 #if HAVE(OS_DARK_MODE_SUPPORT)
                 return @selector(separatorColor);
 #else
                 return @selector(gridColor);
 #endif
             case CSSValueAppleWirelessPlaybackTargetActive:
             case CSSValueAppleSystemBlue:
                 return @selector(systemBlueColor);
             case CSSValueAppleSystemBrown:
                 return @selector(systemBrownColor);
             case CSSValueAppleSystemGray:
                 return @selector(systemGrayColor);
             case CSSValueAppleSystemGreen:
                 return @selector(systemGreenColor);
             case CSSValueAppleSystemOrange:
                 return @selector(systemOrangeColor);
             case CSSValueAppleSystemPink:
                 return @selector(systemPinkColor);
             case CSSValueAppleSystemPurple:
                 return @selector(systemPurpleColor);
             case CSSValueAppleSystemRed:
                 return @selector(systemRedColor);
             case CSSValueAppleSystemYellow:
                 return @selector(systemYellowColor);
             default:
                 return nullptr;
             }
         };

         if (auto selector = selectCocoaColor()) {
             if (auto color = wtfObjCMsgSend<NSColor *>([NSColor class], selector))
                 return semanticColorFromNSColor(color);
         }

         switch (cssValueID) {
         case CSSValueActivebuttontext:
             // No corresponding NSColor for this so we use a hard coded value.
             return Color::white;

         case CSSValueButtonface:
         case CSSValueThreedface:
             // We selected this value instead of [NSColor controlColor] to avoid website incompatibilities.
             // We may want to consider changing to [NSColor controlColor] some day.
             return 0xFFC0C0C0;

         case CSSValueInfobackground:
             // No corresponding NSColor for this so we use a hard coded value.
             return 0xFFFBFCC5;

         case CSSValueMenu:
             return menuBackgroundColor();

         case CSSValueWebkitFocusRingColor:
         case CSSValueActiveborder:
             // Hardcoded to avoid exposing a user appearance preference to the web for fingerprinting.
             if (localAppearance.usingDarkAppearance())
                 return Color(0xFF1AA9FF, Color::Semantic);
             return Color(0xFF0067F4, Color::Semantic);

         case CSSValueAppleSystemControlAccent:
             // Hardcoded to avoid exposing a user appearance preference to the web for fingerprinting.
             // Same color in light and dark appearances.
             return Color(0xFF007AFF, Color::Semantic);

         case CSSValueAppleSystemSelectedContentBackground:
             // Hardcoded to avoid exposing a user appearance preference to the web for fingerprinting.
             if (localAppearance.usingDarkAppearance())
                 return Color(0xFF0058D0, Color::Semantic);
             return Color(0xFF0063E1, Color::Semantic);

         case CSSValueHighlight:
         case CSSValueAppleSystemSelectedTextBackground:
             // Hardcoded to avoid exposing a user appearance preference to the web for fingerprinting.
             if (localAppearance.usingDarkAppearance())
                 return Color(0xCC3F638B, Color::Semantic);
             return Color(0x9980BCFE, Color::Semantic);

 #if __MAC_OS_X_VERSION_MIN_REQUIRED < 101300
         case CSSValueAppleSystemFindHighlightBackground:
             return platformActiveTextSearchHighlightColor(options);
 #endif

 #if !HAVE(OS_DARK_MODE_SUPPORT)
         case CSSValueAppleSystemContainerBorder:
             return 0xFFC5C5C5;
 #endif

         case CSSValueAppleSystemEvenAlternatingContentBackground: {
 #if HAVE(OS_DARK_MODE_SUPPORT)
             NSArray<NSColor *> *alternateColors = [NSColor alternatingContentBackgroundColors];
 #else
             NSArray<NSColor *> *alternateColors = [NSColor controlAlternatingRowBackgroundColors];
 #endif
             ASSERT(alternateColors.count >= 2);
             return semanticColorFromNSColor(alternateColors[0]);
         }

         case CSSValueAppleSystemOddAlternatingContentBackground: {
 #if HAVE(OS_DARK_MODE_SUPPORT)
             NSArray<NSColor *> *alternateColors = [NSColor alternatingContentBackgroundColors];
 #else
             NSArray<NSColor *> *alternateColors = [NSColor controlAlternatingRowBackgroundColors];
 #endif
             ASSERT(alternateColors.count >= 2);
             return semanticColorFromNSColor(alternateColors[1]);
         }

         case CSSValueBackground:
             // Use platform-independent value returned by base class.
             FALLTHROUGH;

         default:
             return RenderTheme::systemColor(cssValueID, options);
         }
     }).iterator->value;
 }

 bool RenderThemeMac::usesTestModeFocusRingColor() const
 {
     return WebCore::usesTestModeFocusRingColor();
 }

 bool RenderThemeMac::isControlStyled(const RenderStyle& style, const BorderData& border,
                                      const FillLayer& background, const Color& backgroundColor) const
 {
     if (style.appearance() == TextFieldPart || style.appearance() == TextAreaPart || style.appearance() == ListboxPart)
         return style.border() != border;

     // FIXME: This is horrible, but there is not much else that can be done.  Menu lists cannot draw properly when
     // scaled.  They can't really draw properly when transformed either.  We can't detect the transform case at style
     // adjustment time so that will just have to stay broken.  We can however detect that we're zooming.  If zooming
     // is in effect we treat it like the control is styled.
     if (style.appearance() == MenulistPart && style.effectiveZoom() != 1.0f)
         return true;

     return RenderTheme::isControlStyled(style, border, background, backgroundColor);
 }

 static FloatRect inflateRect(const FloatRect& rect, const IntSize& size, const int* margins, float zoomLevel)
 {
     // Only do the inflation if the available width/height are too small. Otherwise try to
     // fit the glow/check space into the available box's width/height.
     int widthDelta = rect.width() - (size.width() + margins[leftMargin] * zoomLevel + margins[rightMargin] * zoomLevel);
     int heightDelta = rect.height() - (size.height() + margins[topMargin] * zoomLevel + margins[bottomMargin] * zoomLevel);
     FloatRect result(rect);
     if (widthDelta < 0) {
         result.setX(result.x() - margins[leftMargin] * zoomLevel);
         result.setWidth(result.width() - widthDelta);
     }
     if (heightDelta < 0) {
         result.setY(result.y() - margins[topMargin] * zoomLevel);
         result.setHeight(result.height() - heightDelta);
     }
     return result;
 }

 void RenderThemeMac::adjustRepaintRect(const RenderObject& renderer, FloatRect& rect)
 {
     ControlPart part = renderer.style().appearance();

 #if USE(NEW_THEME)
     switch (part) {
         case CheckboxPart:
         case RadioPart:
         case PushButtonPart:
         case SquareButtonPart:
 #if ENABLE(INPUT_TYPE_COLOR)
         case ColorWellPart:
 #endif
         case DefaultButtonPart:
         case ButtonPart:
         case InnerSpinButtonPart:
             return RenderTheme::adjustRepaintRect(renderer, rect);
         default:
             break;
     }
 #endif

     float zoomLevel = renderer.style().effectiveZoom();

     if (part == MenulistPart) {
         setPopupButtonCellState(renderer, IntSize(rect.size()));
         IntSize size = popupButtonSizes()[[popupButton() controlSize]];
         size.setHeight(size.height() * zoomLevel);
         size.setWidth(rect.width());
         rect = inflateRect(rect, size, popupButtonMargins(), zoomLevel);
     }
 }

 static FloatPoint convertToPaintingPosition(const RenderBox& inputRenderer, const RenderBox& customButtonRenderer, const FloatPoint& customButtonLocalPosition,
     const IntPoint& paintOffset)
 {
     IntPoint offsetFromInputRenderer = roundedIntPoint(customButtonRenderer.localToContainerPoint(customButtonRenderer.contentBoxRect().location(), &inputRenderer));
     FloatPoint paintingPosition = customButtonLocalPosition;
     paintingPosition.moveBy(-offsetFromInputRenderer);
     paintingPosition.moveBy(paintOffset);
     return paintingPosition;
 }

 void RenderThemeMac::updateCheckedState(NSCell* cell, const RenderObject& o)
 {
     bool oldIndeterminate = [cell state] == NSControlStateValueMixed;
     bool indeterminate = isIndeterminate(o);
     bool checked = isChecked(o);

     if (oldIndeterminate != indeterminate) {
         [cell setState:indeterminate ? NSControlStateValueMixed : (checked ? NSControlStateValueOn : NSControlStateValueOff)];
         return;
     }

     bool oldChecked = [cell state] == NSControlStateValueOn;
     if (checked != oldChecked)
         [cell setState:checked ? NSControlStateValueOn : NSControlStateValueOff];
 }

 void RenderThemeMac::updateEnabledState(NSCell* cell, const RenderObject& o)
 {
     bool oldEnabled = [cell isEnabled];
     bool enabled = isEnabled(o);
     if (enabled != oldEnabled)
         [cell setEnabled:enabled];
 }

 void RenderThemeMac::updateFocusedState(NSCell* cell, const RenderObject& o)
 {
     bool oldFocused = [cell showsFirstResponder];
     bool focused = isFocused(o) && o.style().outlineStyleIsAuto() == OutlineIsAuto::On;
     if (focused != oldFocused)
         [cell setShowsFirstResponder:focused];
 }

 void RenderThemeMac::updatePressedState(NSCell* cell, const RenderObject& o)
 {
     bool oldPressed = [cell isHighlighted];
     bool pressed = is<Element>(o.node()) && downcast<Element>(*o.node()).active();
     if (pressed != oldPressed)
         [cell setHighlighted:pressed];
 }

 bool RenderThemeMac::controlSupportsTints(const RenderObject& o) const
 {
     // An alternate way to implement this would be to get the appropriate cell object
     // and call the private _needRedrawOnWindowChangedKeyState method. An advantage of
     // that would be that we would match AppKit behavior more closely, but a disadvantage
     // would be that we would rely on an AppKit SPI method.

     if (!isEnabled(o))
         return false;

     // Checkboxes only have tint when checked.
     if (o.style().appearance() == CheckboxPart)
         return isChecked(o);

     // For now assume other controls have tint if enabled.
     return true;
 }

 NSControlSize RenderThemeMac::controlSizeForFont(const RenderStyle& style) const
 {
     int fontSize = style.computedFontPixelSize();
     if (fontSize >= 16)
         return NSControlSizeRegular;
     if (fontSize >= 11)
         return NSControlSizeSmall;
     return NSControlSizeMini;
 }

 NSControlSize RenderThemeMac::controlSizeForCell(NSCell*, const IntSize* sizes, const IntSize& minSize, float zoomLevel) const
 {
     if (minSize.width() >= static_cast<int>(sizes[NSControlSizeRegular].width() * zoomLevel)
         && minSize.height() >= static_cast<int>(sizes[NSControlSizeRegular].height() * zoomLevel))
         return NSControlSizeRegular;

     if (minSize.width() >= static_cast<int>(sizes[NSControlSizeSmall].width() * zoomLevel)
         && minSize.height() >= static_cast<int>(sizes[NSControlSizeSmall].height() * zoomLevel))
         return NSControlSizeSmall;

     return NSControlSizeMini;
 }

 void RenderThemeMac::setControlSize(NSCell* cell, const IntSize* sizes, const IntSize& minSize, float zoomLevel)
 {
     NSControlSize size = controlSizeForCell(cell, sizes, minSize, zoomLevel);
     if (size != [cell controlSize]) // Only update if we have to, since AppKit does work even if the size is the same.
         [cell setControlSize:size];
 }

 IntSize RenderThemeMac::sizeForFont(const RenderStyle& style, const IntSize* sizes) const
 {
     if (style.effectiveZoom() != 1.0f) {
         IntSize result = sizes[controlSizeForFont(style)];
         return IntSize(result.width() * style.effectiveZoom(), result.height() * style.effectiveZoom());
     }
     return sizes[controlSizeForFont(style)];
 }

 IntSize RenderThemeMac::sizeForSystemFont(const RenderStyle& style, const IntSize* sizes) const
 {
     if (style.effectiveZoom() != 1.0f) {
         IntSize result = sizes[controlSizeForSystemFont(style)];
         return IntSize(result.width() * style.effectiveZoom(), result.height() * style.effectiveZoom());
     }
     return sizes[controlSizeForSystemFont(style)];
 }

 void RenderThemeMac::setSizeFromFont(RenderStyle& style, const IntSize* sizes) const
 {
     // FIXME: Check is flawed, since it doesn't take min-width/max-width into account.
     IntSize size = sizeForFont(style, sizes);
     if (style.width().isIntrinsicOrAuto() && size.width() > 0)
         style.setWidth(Length(size.width(), Fixed));
     if (style.height().isAuto() && size.height() > 0)
         style.setHeight(Length(size.height(), Fixed));
 }

 void RenderThemeMac::setFontFromControlSize(StyleResolver&, RenderStyle& style, NSControlSize controlSize) const
 {
     FontCascadeDescription fontDescription;
     fontDescription.setIsAbsoluteSize(true);

     NSFont* font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:controlSize]];
     fontDescription.setOneFamily(AtomString("-apple-system", AtomString::ConstructFromLiteral));
     fontDescription.setComputedSize([font pointSize] * style.effectiveZoom());
     fontDescription.setSpecifiedSize([font pointSize] * style.effectiveZoom());

     // Reset line height
     style.setLineHeight(RenderStyle::initialLineHeight());

     if (style.setFontDescription(WTFMove(fontDescription)))
         style.fontCascade().update(0);
 }

 NSControlSize RenderThemeMac::controlSizeForSystemFont(const RenderStyle& style) const
 {
     int fontSize = style.computedFontPixelSize();
     if (fontSize >= [NSFont systemFontSizeForControlSize:NSControlSizeRegular])
         return NSControlSizeRegular;
     if (fontSize >= [NSFont systemFontSizeForControlSize:NSControlSizeSmall])
         return NSControlSizeSmall;
     return NSControlSizeMini;
 }

 #if ENABLE(DATALIST_ELEMENT)

 void RenderThemeMac::paintListButtonForInput(const RenderObject& o, GraphicsContext& context, const FloatRect& r)
 {
     // We can't paint an NSComboBoxCell since they are not height-resizable.
     const auto& input = downcast<HTMLInputElement>(*(o.generatingNode()));
     NSCell *listButton = this->listButton();

     NSRect listButtonFrame = NSMakeRect(r.maxX() - listButtonWidth, r.y(), listButtonWidth, r.height());
     if (!o.style().isLeftToRightDirection()) {
         listButtonFrame.origin.x = r.x();
         [listButton setUserInterfaceLayoutDirection:NSUserInterfaceLayoutDirectionRightToLeft];
     } else
         [listButton setUserInterfaceLayoutDirection:NSUserInterfaceLayoutDirectionLeftToRight];

     [listButton setHighlighted:input.isPresentingAttachedView()];
     if (!input.isPresentingAttachedView()) {
         ASSERT(input.dataListButtonElement());
         if (auto* buttonElement = input.dataListButtonElement())
             updatePressedState(listButton, *buttonElement->renderer());
     }

     [listButton drawWithFrame:listButtonFrame inView:documentViewFor(o)];
     [listButton setControlView:nil];

     RefPtr<Image> image;
     float imageScale = 1;
     if (o.document().deviceScaleFactor() >= 2) {
         image = Image::loadPlatformResource("ListButtonArrow@2x");
         imageScale = 2;
     } else
         image = Image::loadPlatformResource("ListButtonArrow");

     FloatRect imageRect(0, 0, image->width() / imageScale, image->height() / imageScale);
     imageRect.setX(NSMidX(listButtonFrame) - imageRect.width() / 2);
     imageRect.setY(NSMidY(listButtonFrame) - imageRect.height() / 2);

     context.drawImage(*image, imageRect);
 }

 void RenderThemeMac::adjustListButtonStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     // Add a margin to place the button at end of the input field.
     if (style.isLeftToRightDirection())
         style.setMarginRight(Length(-4, Fixed));
     else
         style.setMarginLeft(Length(-4, Fixed));
 }

 #endif

 bool RenderThemeMac::paintTextField(const RenderObject& o, const PaintInfo& paintInfo, const FloatRect& r)
 {
     LocalCurrentGraphicsContext localContext(paintInfo.context());

     // <rdar://problem/22896977> We adjust the paint rect here to account for how AppKit draws the text
     // field cell slightly smaller than the rect we pass to drawWithFrame.
     FloatRect adjustedPaintRect(r);
     AffineTransform transform = paintInfo.context().getCTM();
     if (transform.xScale() > 1 || transform.yScale() > 1) {
         adjustedPaintRect.inflateX(1 / transform.xScale());
 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101400
         adjustedPaintRect.inflateY(2 / transform.yScale());
         adjustedPaintRect.move(0, -1 / transform.yScale());
 #else
         adjustedPaintRect.inflateY(1 / transform.yScale());
 #endif
     }
     NSTextFieldCell *textField = this->textField();

     GraphicsContextStateSaver stateSaver(paintInfo.context());

     [textField setEnabled:(isEnabled(o) && !isReadOnlyControl(o))];
     [textField drawWithFrame:NSRect(adjustedPaintRect) inView:documentViewFor(o)];

     [textField setControlView:nil];

 #if ENABLE(DATALIST_ELEMENT)
     if (!is<HTMLInputElement>(o.generatingNode()))
         return false;

     const auto& input = downcast<HTMLInputElement>(*(o.generatingNode()));
     if (input.list())
         paintListButtonForInput(o, paintInfo.context(), adjustedPaintRect);
 #endif

     return false;
 }

 void RenderThemeMac::adjustTextFieldStyle(StyleResolver&, RenderStyle&, const Element*) const
 {
 }

 bool RenderThemeMac::paintTextArea(const RenderObject& o, const PaintInfo& paintInfo, const FloatRect& r)
 {
     LocalCurrentGraphicsContext localContext(paintInfo.context());
     _NSDrawCarbonThemeListBox(r, isEnabled(o) && !isReadOnlyControl(o), YES, YES);
     return false;
 }

 void RenderThemeMac::adjustTextAreaStyle(StyleResolver&, RenderStyle&, const Element*) const
 {
 }

 const int* RenderThemeMac::popupButtonMargins() const
 {
     static const int margins[3][4] =
     {
         { 0, 3, 1, 3 },
         { 0, 3, 2, 3 },
         { 0, 1, 0, 1 }
     };
     return margins[[popupButton() controlSize]];
 }

 const IntSize* RenderThemeMac::popupButtonSizes() const
 {
     static const IntSize sizes[3] = { IntSize(0, 21), IntSize(0, 18), IntSize(0, 15) };
     return sizes;
 }

 const int* RenderThemeMac::popupButtonPadding(NSControlSize size, bool isRTL) const
 {
     static const int paddingLTR[3][4] =
     {
         { 2, 26, 3, 8 },
         { 2, 23, 3, 8 },
         { 2, 22, 3, 10 }
     };
     static const int paddingRTL[3][4] =
     {
         { 2, 8, 3, 26 },
         { 2, 8, 3, 23 },
         { 2, 8, 3, 22 }
     };
     return isRTL ? paddingRTL[size] : paddingLTR[size];
 }

 bool RenderThemeMac::paintMenuList(const RenderObject& renderer, const PaintInfo& paintInfo, const FloatRect& rect)
 {
     LocalCurrentGraphicsContext localContext(paintInfo.context());
     setPopupButtonCellState(renderer, IntSize(rect.size()));

     NSPopUpButtonCell* popupButton = this->popupButton();

     float zoomLevel = renderer.style().effectiveZoom();
     IntSize size = popupButtonSizes()[[popupButton controlSize]];
     size.setHeight(size.height() * zoomLevel);
     size.setWidth(rect.width());

     // Now inflate it to account for the shadow.
     FloatRect inflatedRect = rect;
     if (rect.width() >= minimumMenuListSize(renderer.style()))
         inflatedRect = inflateRect(rect, size, popupButtonMargins(), zoomLevel);

     GraphicsContextStateSaver stateSaver(paintInfo.context());

     if (zoomLevel != 1.0f) {
         inflatedRect.setWidth(inflatedRect.width() / zoomLevel);
         inflatedRect.setHeight(inflatedRect.height() / zoomLevel);
         paintInfo.context().translate(inflatedRect.location());
         paintInfo.context().scale(zoomLevel);
         paintInfo.context().translate(-inflatedRect.location());
     }

     paintCellAndSetFocusedElementNeedsRepaintIfNecessary(popupButton, renderer, paintInfo, inflatedRect);
     [popupButton setControlView:nil];

     return false;
 }

 #if ENABLE(METER_ELEMENT)

 IntSize RenderThemeMac::meterSizeForBounds(const RenderMeter& renderMeter, const IntRect& bounds) const
 {
     if (NoControlPart == renderMeter.style().appearance())
         return bounds.size();

     NSLevelIndicatorCell* cell = levelIndicatorFor(renderMeter);
     // Makes enough room for cell's intrinsic size.
     NSSize cellSize = [cell cellSizeForBounds:IntRect(IntPoint(), bounds.size())];
     return IntSize(bounds.width() < cellSize.width ? cellSize.width : bounds.width(),
                    bounds.height() < cellSize.height ? cellSize.height : bounds.height());
 }

 bool RenderThemeMac::paintMeter(const RenderObject& renderObject, const PaintInfo& paintInfo, const IntRect& rect)
 {
     if (!is<RenderMeter>(renderObject))
         return true;

     LocalCurrentGraphicsContext localContext(paintInfo.context());

     NSLevelIndicatorCell* cell = levelIndicatorFor(downcast<RenderMeter>(renderObject));
     GraphicsContextStateSaver stateSaver(paintInfo.context());

     [cell drawWithFrame:rect inView:documentViewFor(renderObject)];
     [cell setControlView:nil];
     return false;
 }

 bool RenderThemeMac::supportsMeter(ControlPart part) const
 {
     switch (part) {
     case RelevancyLevelIndicatorPart:
     case DiscreteCapacityLevelIndicatorPart:
     case RatingLevelIndicatorPart:
     case MeterPart:
     case ContinuousCapacityLevelIndicatorPart:
         return true;
     default:
         return false;
     }
 }

 NSLevelIndicatorStyle RenderThemeMac::levelIndicatorStyleFor(ControlPart part) const
 {
     switch (part) {
     case RelevancyLevelIndicatorPart:
         return NSLevelIndicatorStyleRelevancy;
     case DiscreteCapacityLevelIndicatorPart:
         return NSLevelIndicatorStyleDiscreteCapacity;
     case RatingLevelIndicatorPart:
         return NSLevelIndicatorStyleRating;
     case MeterPart:
     case ContinuousCapacityLevelIndicatorPart:
     default:
         return NSLevelIndicatorStyleContinuousCapacity;
     }

 }

 NSLevelIndicatorCell* RenderThemeMac::levelIndicatorFor(const RenderMeter& renderMeter) const
 {
     const RenderStyle& style = renderMeter.style();
     ASSERT(style.appearance() != NoControlPart);

     if (!m_levelIndicator)
         m_levelIndicator = adoptNS([[NSLevelIndicatorCell alloc] initWithLevelIndicatorStyle:NSLevelIndicatorStyleContinuousCapacity]);
     NSLevelIndicatorCell* cell = m_levelIndicator.get();

     HTMLMeterElement* element = renderMeter.meterElement();
     double value = element->value();

     // Because NSLevelIndicatorCell does not support optimum-in-the-middle type coloring,
     // we explicitly control the color instead giving low and high value to NSLevelIndicatorCell as is.
     switch (element->gaugeRegion()) {
     case HTMLMeterElement::GaugeRegionOptimum:
         // Make meter the green
         [cell setWarningValue:value + 1];
         [cell setCriticalValue:value + 2];
         break;
     case HTMLMeterElement::GaugeRegionSuboptimal:
         // Make the meter yellow
         [cell setWarningValue:value - 1];
         [cell setCriticalValue:value + 1];
         break;
     case HTMLMeterElement::GaugeRegionEvenLessGood:
         // Make the meter red
         [cell setWarningValue:value - 2];
         [cell setCriticalValue:value - 1];
         break;
     }

     [cell setLevelIndicatorStyle:levelIndicatorStyleFor(style.appearance())];
     [cell setUserInterfaceLayoutDirection:style.isLeftToRightDirection() ? NSUserInterfaceLayoutDirectionLeftToRight : NSUserInterfaceLayoutDirectionRightToLeft];
     [cell setMinValue:element->min()];
     [cell setMaxValue:element->max()];
     [cell setObjectValue:@(value)];

     return cell;
 }

 #endif

 const IntSize* RenderThemeMac::progressBarSizes() const
 {
     static const IntSize sizes[3] = { IntSize(0, 20), IntSize(0, 12), IntSize(0, 12) };
     return sizes;
 }

 const int* RenderThemeMac::progressBarMargins(NSControlSize controlSize) const
 {
     static const int margins[3][4] =
     {
         { 0, 0, 1, 0 },
         { 0, 0, 1, 0 },
         { 0, 0, 1, 0 },
     };
     return margins[controlSize];
 }

 IntRect RenderThemeMac::progressBarRectForBounds(const RenderObject& renderObject, const IntRect& bounds) const
 {
     // Workaround until <rdar://problem/15855086> is fixed.
     int maxDimension = static_cast<int>(std::numeric_limits<ushort>::max());
     IntRect progressBarBounds(bounds.x(), bounds.y(), std::min(bounds.width(), maxDimension), std::min(bounds.height(), maxDimension));
     if (NoControlPart == renderObject.style().appearance())
         return progressBarBounds;

     float zoomLevel = renderObject.style().effectiveZoom();
     NSControlSize controlSize = controlSizeForFont(renderObject.style());
     IntSize size = progressBarSizes()[controlSize];
     size.setHeight(size.height() * zoomLevel);
     size.setWidth(progressBarBounds.width());

     // Now inflate it to account for the shadow.
     IntRect inflatedRect = progressBarBounds;
     if (progressBarBounds.height() <= minimumProgressBarHeight(renderObject.style()))
         inflatedRect = IntRect(inflateRect(inflatedRect, size, progressBarMargins(controlSize), zoomLevel));

     return inflatedRect;
 }

 int RenderThemeMac::minimumProgressBarHeight(const RenderStyle& style) const
 {
     return sizeForSystemFont(style, progressBarSizes()).height();
 }

 Seconds RenderThemeMac::animationRepeatIntervalForProgressBar(RenderProgress&) const
 {
     return progressAnimationFrameRate;
 }

 Seconds RenderThemeMac::animationDurationForProgressBar(RenderProgress&) const
 {
     return progressAnimationFrameRate * progressAnimationNumFrames;
 }

 void RenderThemeMac::adjustProgressBarStyle(StyleResolver&, RenderStyle&, const Element*) const
 {
 }

 bool RenderThemeMac::paintProgressBar(const RenderObject& renderObject, const PaintInfo& paintInfo, const IntRect& rect)
 {
     if (!is<RenderProgress>(renderObject))
         return true;

     IntRect inflatedRect = progressBarRectForBounds(renderObject, rect);
     NSControlSize controlSize = controlSizeForFont(renderObject.style());

     const auto& renderProgress = downcast<RenderProgress>(renderObject);
     HIThemeTrackDrawInfo trackInfo;
     trackInfo.version = 0;
     if (controlSize == NSControlSizeRegular)
         trackInfo.kind = renderProgress.position() < 0 ? kThemeLargeIndeterminateBar : kThemeLargeProgressBar;
     else
         trackInfo.kind = renderProgress.position() < 0 ? kThemeMediumIndeterminateBar : kThemeMediumProgressBar;

     float deviceScaleFactor = renderObject.document().deviceScaleFactor();
     trackInfo.bounds = IntRect(IntPoint(), inflatedRect.size());
     trackInfo.min = 0;
     trackInfo.max = std::numeric_limits<SInt32>::max();
     trackInfo.value = lround(renderProgress.position() * nextafter(trackInfo.max, 0));
     trackInfo.trackInfo.progress.phase = lround(renderProgress.animationProgress() * nextafter(progressAnimationNumFrames, 0) * deviceScaleFactor);
     trackInfo.attributes = kThemeTrackHorizontal;
     trackInfo.enableState = isActive(renderObject) ? kThemeTrackActive : kThemeTrackInactive;
     trackInfo.reserved = 0;
     trackInfo.filler1 = 0;

     std::unique_ptr<ImageBuffer> imageBuffer = ImageBuffer::createCompatibleBuffer(inflatedRect.size(), deviceScaleFactor, ColorSpaceSRGB, paintInfo.context());
     if (!imageBuffer)
         return true;

     ContextContainer cgContextContainer(imageBuffer->context());
     CGContextRef cgContext = cgContextContainer.context();
     HIThemeDrawTrack(&trackInfo, 0, cgContext, kHIThemeOrientationNormal);

     GraphicsContextStateSaver stateSaver(paintInfo.context());

     if (!renderProgress.style().isLeftToRightDirection()) {
         paintInfo.context().translate(2 * inflatedRect.x() + inflatedRect.width(), 0);
         paintInfo.context().scale(FloatSize(-1, 1));
     }

     paintInfo.context().drawConsumingImageBuffer(WTFMove(imageBuffer), inflatedRect.location());
     return false;
 }

 const float baseFontSize = 11.0f;
 const float baseArrowHeight = 4.0f;
 const float baseArrowWidth = 5.0f;
 const float baseSpaceBetweenArrows = 2.0f;
 const int arrowPaddingBefore = 6;
 const int arrowPaddingAfter = 6;
 const int paddingBeforeSeparator = 4;
 const int baseBorderRadius = 5;
 const int styledPopupPaddingLeft = 8;
 const int styledPopupPaddingTop = 1;
 const int styledPopupPaddingBottom = 2;

 static void TopGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
 {
     static const float dark[4] = { 1.0f, 1.0f, 1.0f, 0.4f };
     static const float light[4] = { 1.0f, 1.0f, 1.0f, 0.15f };
     float a = inData[0];
     int i = 0;
     for (i = 0; i < 4; i++)
         outData[i] = (1.0f - a) * dark[i] + a * light[i];
 }

 static void BottomGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
 {
     static const float dark[4] = { 1.0f, 1.0f, 1.0f, 0.0f };
     static const float light[4] = { 1.0f, 1.0f, 1.0f, 0.3f };
     float a = inData[0];
     int i = 0;
     for (i = 0; i < 4; i++)
         outData[i] = (1.0f - a) * dark[i] + a * light[i];
 }

 static void MainGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
 {
     static const float dark[4] = { 0.0f, 0.0f, 0.0f, 0.15f };
     static const float light[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
     float a = inData[0];
     int i = 0;
     for (i = 0; i < 4; i++)
         outData[i] = (1.0f - a) * dark[i] + a * light[i];
 }

 static void TrackGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
 {
     static const float dark[4] = { 0.0f, 0.0f, 0.0f, 0.678f };
     static const float light[4] = { 0.0f, 0.0f, 0.0f, 0.13f };
     float a = inData[0];
     int i = 0;
     for (i = 0; i < 4; i++)
         outData[i] = (1.0f - a) * dark[i] + a * light[i];
 }

 void RenderThemeMac::paintMenuListButtonGradients(const RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     if (r.isEmpty())
         return;

     ContextContainer cgContextContainer(paintInfo.context());
     CGContextRef context = cgContextContainer.context();

     GraphicsContextStateSaver stateSaver(paintInfo.context());

     FloatRoundedRect border = FloatRoundedRect(o.style().getRoundedBorderFor(r));
     int radius = border.radii().topLeft().width();

     CGColorSpaceRef cspace = sRGBColorSpaceRef();

     FloatRect topGradient(r.x(), r.y(), r.width(), r.height() / 2.0f);
     struct CGFunctionCallbacks topCallbacks = { 0, TopGradientInterpolate, NULL };
     RetainPtr<CGFunctionRef> topFunction = adoptCF(CGFunctionCreate(NULL, 1, NULL, 4, NULL, &topCallbacks));
     RetainPtr<CGShadingRef> topShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(topGradient.x(), topGradient.y()), CGPointMake(topGradient.x(), topGradient.maxY()), topFunction.get(), false, false));

     FloatRect bottomGradient(r.x() + radius, r.y() + r.height() / 2.0f, r.width() - 2.0f * radius, r.height() / 2.0f);
     struct CGFunctionCallbacks bottomCallbacks = { 0, BottomGradientInterpolate, NULL };
     RetainPtr<CGFunctionRef> bottomFunction = adoptCF(CGFunctionCreate(NULL, 1, NULL, 4, NULL, &bottomCallbacks));
     RetainPtr<CGShadingRef> bottomShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(bottomGradient.x(),  bottomGradient.y()), CGPointMake(bottomGradient.x(), bottomGradient.maxY()), bottomFunction.get(), false, false));

     struct CGFunctionCallbacks mainCallbacks = { 0, MainGradientInterpolate, NULL };
     RetainPtr<CGFunctionRef> mainFunction = adoptCF(CGFunctionCreate(NULL, 1, NULL, 4, NULL, &mainCallbacks));
     RetainPtr<CGShadingRef> mainShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(r.x(),  r.y()), CGPointMake(r.x(), r.maxY()), mainFunction.get(), false, false));

     RetainPtr<CGShadingRef> leftShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(r.x(),  r.y()), CGPointMake(r.x() + radius, r.y()), mainFunction.get(), false, false));

     RetainPtr<CGShadingRef> rightShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(r.maxX(),  r.y()), CGPointMake(r.maxX() - radius, r.y()), mainFunction.get(), false, false));

     {
         GraphicsContextStateSaver stateSaver(paintInfo.context());
         CGContextClipToRect(context, r);
         paintInfo.context().clipRoundedRect(border);
         context = cgContextContainer.context();
         CGContextDrawShading(context, mainShading.get());
     }

     {
         GraphicsContextStateSaver stateSaver(paintInfo.context());
         CGContextClipToRect(context, topGradient);
         paintInfo.context().clipRoundedRect(FloatRoundedRect(enclosingIntRect(topGradient), border.radii().topLeft(), border.radii().topRight(), IntSize(), IntSize()));
         context = cgContextContainer.context();
         CGContextDrawShading(context, topShading.get());
     }

     if (!bottomGradient.isEmpty()) {
         GraphicsContextStateSaver stateSaver(paintInfo.context());
         CGContextClipToRect(context, bottomGradient);
         paintInfo.context().clipRoundedRect(FloatRoundedRect(enclosingIntRect(bottomGradient), IntSize(), IntSize(), border.radii().bottomLeft(), border.radii().bottomRight()));
         context = cgContextContainer.context();
         CGContextDrawShading(context, bottomShading.get());
     }

     {
         GraphicsContextStateSaver stateSaver(paintInfo.context());
         CGContextClipToRect(context, r);
         paintInfo.context().clipRoundedRect(border);
         context = cgContextContainer.context();
         CGContextDrawShading(context, leftShading.get());
         CGContextDrawShading(context, rightShading.get());
     }
 }

 bool RenderThemeMac::paintMenuListButtonDecorations(const RenderBox& renderer, const PaintInfo& paintInfo, const FloatRect& rect)
 {
     bool isRTL = renderer.style().direction() == TextDirection::RTL;
     IntRect bounds = IntRect(rect.x() + renderer.style().borderLeftWidth(),
         rect.y() + renderer.style().borderTopWidth(),
         rect.width() - renderer.style().borderLeftWidth() - renderer.style().borderRightWidth(),
         rect.height() - renderer.style().borderTopWidth() - renderer.style().borderBottomWidth());
     // Draw the gradients to give the styled popup menu a button appearance
     paintMenuListButtonGradients(renderer, paintInfo, bounds);

     // Since we actually know the size of the control here, we restrict the font scale to make sure the arrows will fit vertically in the bounds
     float fontScale = std::min(renderer.style().computedFontPixelSize() / baseFontSize, bounds.height() / (baseArrowHeight * 2 + baseSpaceBetweenArrows));
     float centerY = bounds.y() + bounds.height() / 2.0f;
     float arrowHeight = baseArrowHeight * fontScale;
     float arrowWidth = baseArrowWidth * fontScale;
     float leftEdge;
     if (isRTL)
         leftEdge = bounds.x() + arrowPaddingAfter * renderer.style().effectiveZoom();
     else
         leftEdge = bounds.maxX() - arrowPaddingAfter * renderer.style().effectiveZoom() - arrowWidth;
     float spaceBetweenArrows = baseSpaceBetweenArrows * fontScale;

     if (bounds.width() < arrowWidth + arrowPaddingBefore * renderer.style().effectiveZoom())
         return false;

     GraphicsContextStateSaver stateSaver(paintInfo.context());

     paintInfo.context().setFillColor(renderer.style().visitedDependentColor(CSSPropertyColor));
     paintInfo.context().setStrokeStyle(NoStroke);

     // Draw the top arrow
     Vector<FloatPoint> arrow1 = {
         { leftEdge, centerY - spaceBetweenArrows / 2.0f },
         { leftEdge + arrowWidth, centerY - spaceBetweenArrows / 2.0f },
         { leftEdge + arrowWidth / 2.0f, centerY - spaceBetweenArrows / 2.0f - arrowHeight }
     };
     paintInfo.context().fillPath(Path::polygonPathFromPoints(arrow1));

     // Draw the bottom arrow
     Vector<FloatPoint> arrow2 = {
         { leftEdge, centerY + spaceBetweenArrows / 2.0f },
         { leftEdge + arrowWidth, centerY + spaceBetweenArrows / 2.0f },
         { leftEdge + arrowWidth / 2.0f, centerY + spaceBetweenArrows / 2.0f + arrowHeight }
     };
     paintInfo.context().fillPath(Path::polygonPathFromPoints(arrow2));

     Color leftSeparatorColor(0, 0, 0, 40);
     Color rightSeparatorColor(255, 255, 255, 40);

     // FIXME: Should the separator thickness and space be scaled up by fontScale?
     int separatorSpace = 2; // Deliberately ignores zoom since it looks nicer if it stays thin.
     int leftEdgeOfSeparator;
     if (isRTL)
         leftEdgeOfSeparator = static_cast<int>(roundf(leftEdge + arrowWidth + arrowPaddingBefore * renderer.style().effectiveZoom()));
     else
         leftEdgeOfSeparator = static_cast<int>(roundf(leftEdge - arrowPaddingBefore * renderer.style().effectiveZoom()));

     // Draw the separator to the left of the arrows
     paintInfo.context().setStrokeThickness(1); // Deliberately ignores zoom since it looks nicer if it stays thin.
     paintInfo.context().setStrokeStyle(SolidStroke);
     paintInfo.context().setStrokeColor(leftSeparatorColor);
     paintInfo.context().drawLine(IntPoint(leftEdgeOfSeparator, bounds.y()),
         IntPoint(leftEdgeOfSeparator, bounds.maxY()));

     paintInfo.context().setStrokeColor(rightSeparatorColor);
     paintInfo.context().drawLine(IntPoint(leftEdgeOfSeparator + separatorSpace, bounds.y()),
         IntPoint(leftEdgeOfSeparator + separatorSpace, bounds.maxY()));
     return false;
 }

 static const IntSize* menuListButtonSizes()
 {
     static const IntSize sizes[3] = { IntSize(0, 21), IntSize(0, 18), IntSize(0, 15) };
     return sizes;
 }

 void RenderThemeMac::adjustMenuListStyle(StyleResolver& styleResolver, RenderStyle& style, const Element* e) const
 {
     NSControlSize controlSize = controlSizeForFont(style);

     style.resetBorder();
     style.resetPadding();

     // Height is locked to auto.
     style.setHeight(Length(Auto));

     // White-space is locked to pre
     style.setWhiteSpace(WhiteSpace::Pre);

     // Set the foreground color to black or gray when we have the aqua look.
     Color c = Color::darkGray;
     if (e) {
         OptionSet<StyleColor::Options> options = e->document().styleColorOptions(&style);
         c = !e->isDisabledFormControl() ? systemColor(CSSValueButtontext, options) : systemColor(CSSValueGraytext, options);
     }
     style.setColor(c);

     // Set the button's vertical size.
     setSizeFromFont(style, menuListButtonSizes());

     // Our font is locked to the appropriate system font size for the control.  To clarify, we first use the CSS-specified font to figure out
     // a reasonable control size, but once that control size is determined, we throw that font away and use the appropriate
     // system font for the control size instead.
     setFontFromControlSize(styleResolver, style, controlSize);

     style.setBoxShadow(nullptr);
 }

 LengthBox RenderThemeMac::popupInternalPaddingBox(const RenderStyle& style) const
 {
     if (style.appearance() == MenulistPart) {
         const int* padding = popupButtonPadding(controlSizeForFont(style), style.direction() == TextDirection::RTL);
         return { static_cast<int>(padding[topPadding] * style.effectiveZoom()),
             static_cast<int>(padding[rightPadding] * style.effectiveZoom()),
             static_cast<int>(padding[bottomPadding] * style.effectiveZoom()),
             static_cast<int>(padding[leftPadding] * style.effectiveZoom()) };
     }

     if (style.appearance() == MenulistButtonPart) {
         float arrowWidth = baseArrowWidth * (style.computedFontPixelSize() / baseFontSize);
         float rightPadding = ceilf(arrowWidth + (arrowPaddingBefore + arrowPaddingAfter + paddingBeforeSeparator) * style.effectiveZoom());
         float leftPadding = styledPopupPaddingLeft * style.effectiveZoom();
         if (style.direction() == TextDirection::RTL)
             std::swap(rightPadding, leftPadding);
         return { static_cast<int>(styledPopupPaddingTop * style.effectiveZoom()),
             static_cast<int>(rightPadding),
             static_cast<int>(styledPopupPaddingBottom * style.effectiveZoom()),
             static_cast<int>(leftPadding) };
     }

     return { 0, 0, 0, 0 };
 }

 PopupMenuStyle::PopupMenuSize RenderThemeMac::popupMenuSize(const RenderStyle& style, IntRect& rect) const
 {
     NSPopUpButtonCell* popupButton = this->popupButton();
     NSControlSize size = controlSizeForCell(popupButton, popupButtonSizes(), rect.size(), style.effectiveZoom());
     switch (size) {
     case NSControlSizeRegular:
         return PopupMenuStyle::PopupMenuSizeNormal;
     case NSControlSizeSmall:
         return PopupMenuStyle::PopupMenuSizeSmall;
     case NSControlSizeMini:
         return PopupMenuStyle::PopupMenuSizeMini;
     default:
         return PopupMenuStyle::PopupMenuSizeNormal;
     }
 }

 void RenderThemeMac::adjustMenuListButtonStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     float fontScale = style.computedFontPixelSize() / baseFontSize;

     style.resetPadding();
     style.setBorderRadius(IntSize(int(baseBorderRadius + fontScale - 1), int(baseBorderRadius + fontScale - 1))); // FIXME: Round up?

     const int minHeight = 15;
     style.setMinHeight(Length(minHeight, Fixed));

     style.setLineHeight(RenderStyle::initialLineHeight());
 }

 void RenderThemeMac::setPopupButtonCellState(const RenderObject& o, const IntSize& buttonSize)
 {
     NSPopUpButtonCell* popupButton = this->popupButton();

     // Set the control size based off the rectangle we're painting into.
     setControlSize(popupButton, popupButtonSizes(), buttonSize, o.style().effectiveZoom());

     popupButton.userInterfaceLayoutDirection = o.style().direction() == TextDirection::LTR ? NSUserInterfaceLayoutDirectionLeftToRight : NSUserInterfaceLayoutDirectionRightToLeft;

     // Update the various states we respond to.
     updateCheckedState(popupButton, o);
     updateEnabledState(popupButton, o);
     updatePressedState(popupButton, o);
 }

 void RenderThemeMac::paintCellAndSetFocusedElementNeedsRepaintIfNecessary(NSCell* cell, const RenderObject& renderer, const PaintInfo& paintInfo, const FloatRect& rect)
 {
     LocalDefaultSystemAppearance localAppearance(renderer.useDarkAppearance());
     bool shouldDrawFocusRing = isFocused(renderer) && renderer.style().outlineStyleIsAuto() == OutlineIsAuto::On;
     bool shouldUseImageBuffer = renderer.style().effectiveZoom() != 1 || renderer.page().pageScaleFactor() != 1;
     bool shouldDrawCell = true;
     if (ThemeMac::drawCellOrFocusRingWithViewIntoContext(cell, paintInfo.context(), rect, documentViewFor(renderer), shouldDrawCell, shouldDrawFocusRing, shouldUseImageBuffer, renderer.page().deviceScaleFactor()))
         renderer.page().focusController().setFocusedElementNeedsRepaint();
 }

 const IntSize* RenderThemeMac::menuListSizes() const
 {
     static const IntSize sizes[3] = { IntSize(9, 0), IntSize(5, 0), IntSize(0, 0) };
     return sizes;
 }

 int RenderThemeMac::minimumMenuListSize(const RenderStyle& style) const
 {
     return sizeForSystemFont(style, menuListSizes()).width();
 }

 const int trackWidth = 5;
 const int trackRadius = 2;

 void RenderThemeMac::adjustSliderTrackStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     style.setBoxShadow(nullptr);
 }

 bool RenderThemeMac::paintSliderTrack(const RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     IntRect bounds = r;
     float zoomLevel = o.style().effectiveZoom();
     float zoomedTrackWidth = trackWidth * zoomLevel;

     if (o.style().appearance() ==  SliderHorizontalPart || o.style().appearance() ==  MediaSliderPart) {
         bounds.setHeight(zoomedTrackWidth);
         bounds.setY(r.y() + r.height() / 2 - zoomedTrackWidth / 2);
     } else if (o.style().appearance() == SliderVerticalPart) {
         bounds.setWidth(zoomedTrackWidth);
         bounds.setX(r.x() + r.width() / 2 - zoomedTrackWidth / 2);
     }

     LocalCurrentGraphicsContext localContext(paintInfo.context());
     CGContextRef context = localContext.cgContext();
     CGColorSpaceRef cspace = sRGBColorSpaceRef();

 #if ENABLE(DATALIST_ELEMENT)
     paintSliderTicks(o, paintInfo, r);
 #endif

     GraphicsContextStateSaver stateSaver(paintInfo.context());
     CGContextClipToRect(context, bounds);

     struct CGFunctionCallbacks mainCallbacks = { 0, TrackGradientInterpolate, NULL };
     RetainPtr<CGFunctionRef> mainFunction = adoptCF(CGFunctionCreate(NULL, 1, NULL, 4, NULL, &mainCallbacks));
     RetainPtr<CGShadingRef> mainShading;
     if (o.style().appearance() == SliderVerticalPart)
         mainShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(bounds.x(),  bounds.maxY()), CGPointMake(bounds.maxX(), bounds.maxY()), mainFunction.get(), false, false));
     else
         mainShading = adoptCF(CGShadingCreateAxial(cspace, CGPointMake(bounds.x(),  bounds.y()), CGPointMake(bounds.x(), bounds.maxY()), mainFunction.get(), false, false));

     IntSize radius(trackRadius, trackRadius);
     paintInfo.context().clipRoundedRect(FloatRoundedRect(bounds, radius, radius, radius, radius));
     context = localContext.cgContext();
     CGContextDrawShading(context, mainShading.get());

     return false;
 }

 void RenderThemeMac::adjustSliderThumbStyle(StyleResolver& styleResolver, RenderStyle& style, const Element* element) const
 {
     RenderTheme::adjustSliderThumbStyle(styleResolver, style, element);
     style.setBoxShadow(nullptr);
 }

 const float verticalSliderHeightPadding = 0.1f;

 bool RenderThemeMac::paintSliderThumb(const RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     NSSliderCell* sliderThumbCell = o.style().appearance() == SliderThumbVerticalPart
         ? sliderThumbVertical()
         : sliderThumbHorizontal();

     LocalDefaultSystemAppearance localAppearance(o.useDarkAppearance());

     LocalCurrentGraphicsContext localContext(paintInfo.context());

     // Update the various states we respond to.
     updateEnabledState(sliderThumbCell, o);
     auto focusDelegate = is<Element>(o.node()) ? downcast<Element>(*o.node()).focusDelegate() : nullptr;
     if (focusDelegate)
         updateFocusedState(sliderThumbCell, *focusDelegate->renderer());

     // Update the pressed state using the NSCell tracking methods, since that's how NSSliderCell keeps track of it.
     bool oldPressed;
     if (o.style().appearance() == SliderThumbVerticalPart)
         oldPressed = m_isSliderThumbVerticalPressed;
     else
         oldPressed = m_isSliderThumbHorizontalPressed;

     bool pressed = isPressed(o);

     if (o.style().appearance() == SliderThumbVerticalPart)
         m_isSliderThumbVerticalPressed = pressed;
     else
         m_isSliderThumbHorizontalPressed = pressed;

     NSView *view = documentViewFor(o);

     if (pressed != oldPressed) {
         if (pressed)
             [sliderThumbCell startTrackingAt:NSPoint() inView:view];
         else
             [sliderThumbCell stopTracking:NSPoint() at:NSPoint() inView:view mouseIsUp:YES];
     }

     FloatRect bounds = r;
     // Make the height of the vertical slider slightly larger so NSSliderCell will draw a vertical slider.
     if (o.style().appearance() == SliderThumbVerticalPart)
         bounds.setHeight(bounds.height() + verticalSliderHeightPadding * o.style().effectiveZoom());

     GraphicsContextStateSaver stateSaver(paintInfo.context());
     float zoomLevel = o.style().effectiveZoom();

     FloatRect unzoomedRect = bounds;
     if (zoomLevel != 1.0f) {
         unzoomedRect.setSize(unzoomedRect.size() / zoomLevel);
         paintInfo.context().translate(unzoomedRect.location());
         paintInfo.context().scale(zoomLevel);
         paintInfo.context().translate(-unzoomedRect.location());
     }

     bool shouldDrawCell = true;
     bool shouldDrawFocusRing = false;
     float deviceScaleFactor = o.page().deviceScaleFactor();
     bool shouldUseImageBuffer = deviceScaleFactor != 1 || zoomLevel != 1;
     ThemeMac::drawCellOrFocusRingWithViewIntoContext(sliderThumbCell, paintInfo.context(), unzoomedRect, view, shouldDrawCell, shouldDrawFocusRing, shouldUseImageBuffer, deviceScaleFactor);
     [sliderThumbCell setControlView:nil];

     return false;
 }

 bool RenderThemeMac::paintSearchField(const RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     LocalCurrentGraphicsContext localContext(paintInfo.context());
     NSSearchFieldCell* search = this->search();

     setSearchCellState(o, r);

     GraphicsContextStateSaver stateSaver(paintInfo.context());

     float zoomLevel = o.style().effectiveZoom();

     FloatRect unzoomedRect = r;
     if (zoomLevel != 1.0f) {
         unzoomedRect.setSize(unzoomedRect.size() / zoomLevel);
         paintInfo.context().translate(unzoomedRect.location());
         paintInfo.context().scale(zoomLevel);
         paintInfo.context().translate(-unzoomedRect.location());
     }

     // Set the search button to nil before drawing.  Then reset it so we can draw it later.
     [search setSearchButtonCell:nil];

     paintCellAndSetFocusedElementNeedsRepaintIfNecessary(search, o, paintInfo, unzoomedRect);
     [search setControlView:nil];
     [search resetSearchButtonCell];

 #if ENABLE(DATALIST_ELEMENT)
     if (!is<HTMLInputElement>(o.generatingNode()))
         return false;

     const auto& input = downcast<HTMLInputElement>(*(o.generatingNode()));
     if (input.list())
         paintListButtonForInput(o, paintInfo.context(), FloatRect(unzoomedRect.x(), unzoomedRect.y() + 1, unzoomedRect.width(), unzoomedRect.height() - 2));
 #endif

     return false;
 }

 void RenderThemeMac::setSearchCellState(const RenderObject& o, const IntRect&)
 {
     NSSearchFieldCell* search = this->search();

     [search setPlaceholderString:@""];
     [search setControlSize:controlSizeForFont(o.style())];

     // Update the various states we respond to.
     updateEnabledState(search, o);
     updateFocusedState(search, o);
 }

 const IntSize* RenderThemeMac::searchFieldSizes() const
 {
     static const IntSize sizes[3] = { IntSize(0, 22), IntSize(0, 19), IntSize(0, 17) };
     return sizes;
 }

 void RenderThemeMac::setSearchFieldSize(RenderStyle& style) const
 {
     // If the width and height are both specified, then we have nothing to do.
     if (!style.width().isIntrinsicOrAuto() && !style.height().isAuto())
         return;

     // Use the font size to determine the intrinsic width of the control.
     setSizeFromFont(style, searchFieldSizes());
 }

 void RenderThemeMac::adjustSearchFieldStyle(StyleResolver& styleResolver, RenderStyle& style, const Element*) const
 {
     // Override border.
     style.resetBorder();
     const short borderWidth = 2 * style.effectiveZoom();
     style.setBorderLeftWidth(borderWidth);
     style.setBorderLeftStyle(BorderStyle::Inset);
     style.setBorderRightWidth(borderWidth);
     style.setBorderRightStyle(BorderStyle::Inset);
     style.setBorderBottomWidth(borderWidth);
     style.setBorderBottomStyle(BorderStyle::Inset);
     style.setBorderTopWidth(borderWidth);
     style.setBorderTopStyle(BorderStyle::Inset);

     // Override height.
     style.setHeight(Length(Auto));
     setSearchFieldSize(style);

     // Override padding size to match AppKit text positioning.
     const int padding = 1 * style.effectiveZoom();
     style.setPaddingLeft(Length(padding, Fixed));
     style.setPaddingRight(Length(padding, Fixed));
     style.setPaddingTop(Length(padding, Fixed));
     style.setPaddingBottom(Length(padding, Fixed));

     NSControlSize controlSize = controlSizeForFont(style);
     setFontFromControlSize(styleResolver, style, controlSize);

     style.setBoxShadow(nullptr);
 }

 bool RenderThemeMac::paintSearchFieldCancelButton(const RenderBox& box, const PaintInfo& paintInfo, const IntRect& r)
 {
     auto adjustedCancelButtonRect = [this, &box] (const FloatRect& localBoundsForCancelButton) -> FloatRect
     {
         IntSize cancelButtonSizeBasedOnFontSize = sizeForSystemFont(box.style(), cancelButtonSizes());
         FloatSize diff = localBoundsForCancelButton.size() - FloatSize(cancelButtonSizeBasedOnFontSize);
         if (!diff.width() && !diff.height())
             return localBoundsForCancelButton;
         // Vertically centered and right aligned.
         FloatRect adjustedLocalBoundsForCancelButton = localBoundsForCancelButton;
         adjustedLocalBoundsForCancelButton.move(diff.width(), floorToDevicePixel(diff.height() / 2, box.document().deviceScaleFactor()));
         adjustedLocalBoundsForCancelButton.setSize(cancelButtonSizeBasedOnFontSize);
         return adjustedLocalBoundsForCancelButton;
     };

     if (!box.element())
         return false;
     Element* input = box.element()->shadowHost();
     if (!input)
         input = box.element();

     if (!is<RenderBox>(input->renderer()))
         return false;

     const RenderBox& inputBox = downcast<RenderBox>(*input->renderer());
     LocalCurrentGraphicsContext localContext(paintInfo.context());
     setSearchCellState(inputBox, r);

     NSSearchFieldCell* search = this->search();

     if (!input->isDisabledFormControl() && (is<HTMLTextFormControlElement>(*input) && !downcast<HTMLTextFormControlElement>(*input).isReadOnly()))
         updatePressedState([search cancelButtonCell], box);
     else if ([[search cancelButtonCell] isHighlighted])
         [[search cancelButtonCell] setHighlighted:NO];

     GraphicsContextStateSaver stateSaver(paintInfo.context());
     FloatRect localBounds = adjustedCancelButtonRect([search cancelButtonRectForBounds:NSRect(snappedIntRect(inputBox.contentBoxRect()))]);
     // Set the original horizontal position back (cancelButtonRectForBounds() moves it based on the system direction).
     localBounds.setX(inputBox.contentBoxRect().x() + box.x());
     FloatPoint paintingPos = convertToPaintingPosition(inputBox, box, localBounds.location(), r.location());

     FloatRect unzoomedRect(paintingPos, localBounds.size());
     auto zoomLevel = box.style().effectiveZoom();
     if (zoomLevel != 1.0f) {
         unzoomedRect.setSize(unzoomedRect.size() / zoomLevel);
         paintInfo.context().translate(unzoomedRect.location());
         paintInfo.context().scale(zoomLevel);
         paintInfo.context().translate(-unzoomedRect.location());
     }
     [[search cancelButtonCell] drawWithFrame:unzoomedRect inView:documentViewFor(box)];
     [[search cancelButtonCell] setControlView:nil];
     return false;
 }

 const IntSize* RenderThemeMac::cancelButtonSizes() const
 {
     static const IntSize sizes[3] = { IntSize(22, 22), IntSize(19, 19), IntSize(15, 15) };
     return sizes;
 }

 void RenderThemeMac::adjustSearchFieldCancelButtonStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     IntSize size = sizeForSystemFont(style, cancelButtonSizes());
     style.setWidth(Length(size.width(), Fixed));
     style.setHeight(Length(size.height(), Fixed));
     style.setBoxShadow(nullptr);
 }

 const int resultsArrowWidth = 5;
 const IntSize* RenderThemeMac::resultsButtonSizes() const
 {
     static const IntSize sizes[3] = { IntSize(19, 22), IntSize(17, 19), IntSize(17, 15) };
     return sizes;
 }

 const int emptyResultsOffset = 9;
 void RenderThemeMac::adjustSearchFieldDecorationPartStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     IntSize size = sizeForSystemFont(style, resultsButtonSizes());
     style.setWidth(Length(size.width() - emptyResultsOffset, Fixed));
     style.setHeight(Length(size.height(), Fixed));
     style.setBoxShadow(nullptr);
 }

 bool RenderThemeMac::paintSearchFieldDecorationPart(const RenderObject&, const PaintInfo&, const IntRect&)
 {
     return false;
 }

 void RenderThemeMac::adjustSearchFieldResultsDecorationPartStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     IntSize size = sizeForSystemFont(style, resultsButtonSizes());
     style.setWidth(Length(size.width(), Fixed));
     style.setHeight(Length(size.height(), Fixed));
     style.setBoxShadow(nullptr);
 }

 bool RenderThemeMac::paintSearchFieldResultsDecorationPart(const RenderBox& box, const PaintInfo& paintInfo, const IntRect& r)
 {
     if (!box.element())
         return false;
     Element* input = box.element()->shadowHost();
     if (!input)
         input = box.element();
     if (!is<RenderBox>(input->renderer()))
         return false;

     const RenderBox& inputBox = downcast<RenderBox>(*input->renderer());
     LocalCurrentGraphicsContext localContext(paintInfo.context());
     setSearchCellState(inputBox, r);

     NSSearchFieldCell* search = this->search();

     if ([search searchMenuTemplate] != nil)
         [search setSearchMenuTemplate:nil];

     FloatRect localBounds = [search searchButtonRectForBounds:NSRect(snappedIntRect(inputBox.borderBoxRect()))];
     FloatPoint paintingPos = convertToPaintingPosition(inputBox, box, localBounds.location(), r.location());
     localBounds.setLocation(paintingPos);

     [[search searchButtonCell] drawWithFrame:localBounds inView:documentViewFor(box)];
     [[search searchButtonCell] setControlView:nil];
     return false;
 }

 void RenderThemeMac::adjustSearchFieldResultsButtonStyle(StyleResolver&, RenderStyle& style, const Element*) const
 {
     IntSize size = sizeForSystemFont(style, resultsButtonSizes());
     style.setWidth(Length(size.width() + resultsArrowWidth, Fixed));
     style.setHeight(Length(size.height(), Fixed));
     style.setBoxShadow(nullptr);
 }

 bool RenderThemeMac::paintSearchFieldResultsButton(const RenderBox& box, const PaintInfo& paintInfo, const IntRect& r)
 {
     auto adjustedResultButtonRect = [this, &box] (const FloatRect& localBounds) -> FloatRect
     {
         IntSize buttonSize = sizeForSystemFont(box.style(), resultsButtonSizes());
         buttonSize.expand(resultsArrowWidth, 0);
         FloatSize diff = localBounds.size() - FloatSize(buttonSize);
         if (!diff.isZero())
             return localBounds;
         // Vertically centered and left aligned.
         FloatRect adjustedLocalBounds = localBounds;
         adjustedLocalBounds.move(0, floorToDevicePixel(diff.height() / 2, box.document().deviceScaleFactor()));
         adjustedLocalBounds.setSize(buttonSize);
         return adjustedLocalBounds;
     };

     Element* input = box.element()->shadowHost();
     if (!input)
         input = box.element();
     if (!is<RenderBox>(input->renderer()))
         return false;

     const RenderBox& inputBox = downcast<RenderBox>(*input->renderer());
     LocalCurrentGraphicsContext localContext(paintInfo.context());
     setSearchCellState(inputBox, r);

     NSSearchFieldCell* search = this->search();

     if (![search searchMenuTemplate])
         [search setSearchMenuTemplate:searchMenuTemplate()];

     GraphicsContextStateSaver stateSaver(paintInfo.context());
     float zoomLevel = box.style().effectiveZoom();

     FloatRect localBounds = adjustedResultButtonRect([search searchButtonRectForBounds:NSRect(snappedIntRect(inputBox.contentBoxRect()))]);
     // Adjust position based on the content direction.
     float adjustedXPosition;
     if (box.style().direction() == TextDirection::RTL)
         adjustedXPosition = inputBox.contentBoxRect().maxX() - localBounds.size().width();
     else
         adjustedXPosition = inputBox.contentBoxRect().x();
     localBounds.setX(adjustedXPosition);
     FloatPoint paintingPos = convertToPaintingPosition(inputBox, box, localBounds.location(), r.location());

     FloatRect unzoomedRect(paintingPos, localBounds.size());
     if (zoomLevel != 1.0f) {
         unzoomedRect.setSize(unzoomedRect.size() / zoomLevel);
         paintInfo.context().translate(unzoomedRect.location());
         paintInfo.context().scale(zoomLevel);
         paintInfo.context().translate(-unzoomedRect.location());
     }

     [[search searchButtonCell] drawWithFrame:unzoomedRect inView:documentViewFor(box)];
     [[search searchButtonCell] setControlView:nil];

     return false;
 }

 bool RenderThemeMac::paintSnapshottedPluginOverlay(const RenderObject& renderer, const PaintInfo& paintInfo, const IntRect&)
 {
     if (paintInfo.phase != PaintPhase::BlockBackground)
         return true;

     if (!is<RenderBlock>(renderer))
         return true;

     const RenderBlock& renderBlock = downcast<RenderBlock>(renderer);

     LayoutUnit contentWidth = renderBlock.contentWidth();
     LayoutUnit contentHeight = renderBlock.contentHeight();
     if (!contentWidth || !contentHeight)
         return true;

     GraphicsContext& context = paintInfo.context();

     LayoutSize contentSize(contentWidth, contentHeight);
     LayoutPoint contentLocation = renderBlock.location();
     contentLocation.move(renderBlock.borderLeft() + renderBlock.paddingLeft(), renderBlock.borderTop() + renderBlock.paddingTop());

     LayoutRect rect(contentLocation, contentSize);
     IntRect alignedRect = snappedIntRect(rect);
     if (alignedRect.width() <= 0 || alignedRect.height() <= 0)
         return true;

     // We need to get the snapshot image from the plugin element, which should be available
     // from our node. Assuming this node is the plugin overlay element, we should get to the
     // plugin itself by asking for the shadow root parent, and then its parent.

     if (!is<HTMLElement>(*renderBlock.element()))
         return true;

     HTMLElement& plugInOverlay = downcast<HTMLElement>(*renderBlock.element());
     Element* parent = plugInOverlay.parentOrShadowHostElement();
     while (parent && !is<HTMLPlugInElement>(*parent))
         parent = parent->parentOrShadowHostElement();

     if (!parent)
         return true;

     HTMLPlugInElement& plugInElement = downcast<HTMLPlugInElement>(*parent);
     if (!is<HTMLPlugInImageElement>(plugInElement))
         return true;

     HTMLPlugInImageElement& plugInImageElement = downcast<HTMLPlugInImageElement>(plugInElement);

     Image* snapshot = plugInImageElement.snapshotImage();
     if (!snapshot)
         return true;

     RenderSnapshottedPlugIn& plugInRenderer = downcast<RenderSnapshottedPlugIn>(*plugInImageElement.renderer());
     FloatPoint snapshotAbsPos = plugInRenderer.localToAbsolute();
     snapshotAbsPos.move(plugInRenderer.borderLeft() + plugInRenderer.paddingLeft(), plugInRenderer.borderTop() + plugInRenderer.paddingTop());

     // We could draw the snapshot with that coordinates, but we need to make sure there
     // isn't a composited layer between us and the plugInRenderer.
     for (auto* renderBox = &downcast<RenderBox>(renderer); renderBox != &plugInRenderer; renderBox = renderBox->parentBox()) {
         if (renderBox->isComposited()) {
             snapshotAbsPos = -renderBox->location();
             break;
         }
     }

     LayoutSize pluginSize(plugInRenderer.contentWidth(), plugInRenderer.contentHeight());
     LayoutRect pluginRect(snapshotAbsPos, pluginSize);
     IntRect alignedPluginRect = snappedIntRect(pluginRect);

     if (alignedPluginRect.width() <= 0 || alignedPluginRect.height() <= 0)
         return true;

     context.drawImage(*snapshot, alignedPluginRect, CompositeSourceOver);
     return false;
 }

 #if ENABLE(DATALIST_ELEMENT)
 IntSize RenderThemeMac::sliderTickSize() const
 {
     return IntSize(1, 3);
 }

 int RenderThemeMac::sliderTickOffsetFromTrackCenter() const
 {
     return -9;
 }
 #endif

 const int sliderThumbWidth = 15;
 const int sliderThumbHeight = 15;

 void RenderThemeMac::adjustSliderThumbSize(RenderStyle& style, const Element*) const
 {
     float zoomLevel = style.effectiveZoom();
     if (style.appearance() == SliderThumbHorizontalPart || style.appearance() == SliderThumbVerticalPart) {
         style.setWidth(Length(static_cast<int>(sliderThumbWidth * zoomLevel), Fixed));
         style.setHeight(Length(static_cast<int>(sliderThumbHeight * zoomLevel), Fixed));
     }
 }

 NSPopUpButtonCell* RenderThemeMac::popupButton() const
 {
     if (!m_popupButton) {
         m_popupButton = adoptNS([[NSPopUpButtonCell alloc] initTextCell:@"" pullsDown:NO]);
         [m_popupButton.get() setUsesItemFromMenu:NO];
         [m_popupButton.get() setFocusRingType:NSFocusRingTypeExterior];
         [m_popupButton setUserInterfaceLayoutDirection:NSUserInterfaceLayoutDirectionLeftToRight];
     }

     return m_popupButton.get();
 }

 NSSearchFieldCell* RenderThemeMac::search() const
 {
     if (!m_search) {
         m_search = adoptNS([[NSSearchFieldCell alloc] initTextCell:@""]);
         [m_search.get() setBezelStyle:NSTextFieldRoundedBezel];
         [m_search.get() setBezeled:YES];
         [m_search.get() setEditable:YES];
         [m_search.get() setFocusRingType:NSFocusRingTypeExterior];
         [m_search.get() setCenteredLook:NO];
     }

     return m_search.get();
 }

 NSMenu* RenderThemeMac::searchMenuTemplate() const
 {
     if (!m_searchMenuTemplate)
         m_searchMenuTemplate = adoptNS([[NSMenu alloc] initWithTitle:@""]);

     return m_searchMenuTemplate.get();
 }

 NSSliderCell* RenderThemeMac::sliderThumbHorizontal() const
 {
     if (!m_sliderThumbHorizontal) {
         m_sliderThumbHorizontal = adoptNS([[NSSliderCell alloc] init]);
         [m_sliderThumbHorizontal.get() setSliderType:NSSliderTypeLinear];
         [m_sliderThumbHorizontal.get() setControlSize:NSControlSizeSmall];
         [m_sliderThumbHorizontal.get() setFocusRingType:NSFocusRingTypeExterior];
     }

     return m_sliderThumbHorizontal.get();
 }

 NSSliderCell* RenderThemeMac::sliderThumbVertical() const
 {
     if (!m_sliderThumbVertical) {
         m_sliderThumbVertical = adoptNS([[NSSliderCell alloc] init]);
         [m_sliderThumbVertical.get() setSliderType:NSSliderTypeLinear];
         [m_sliderThumbVertical.get() setControlSize:NSControlSizeSmall];
         [m_sliderThumbVertical.get() setFocusRingType:NSFocusRingTypeExterior];
     }

     return m_sliderThumbVertical.get();
 }

 NSTextFieldCell* RenderThemeMac::textField() const
 {
     if (!m_textField) {
         m_textField = adoptNS([[WebCoreTextFieldCell alloc] initTextCell:@""]);
         [m_textField.get() setBezeled:YES];
         [m_textField.get() setEditable:YES];
         [m_textField.get() setFocusRingType:NSFocusRingTypeExterior];
         // Post-Lion, WebCore can be in charge of paintinng the background thanks to
         // the workaround in place for <rdar://problem/11385461>, which is implemented
         // above as _coreUIDrawOptionsWithFrame.
         [m_textField.get() setDrawsBackground:NO];
     }

     return m_textField.get();
 }

 #if ENABLE(DATALIST_ELEMENT)
 NSCell *RenderThemeMac::listButton() const
 {
     if (!m_listButton)
         m_listButton = adoptNS([[WebListButtonCell alloc] init]);

     return m_listButton.get();
 }
 #endif

 String RenderThemeMac::fileListNameForWidth(const FileList* fileList, const FontCascade& font, int width, bool multipleFilesAllowed) const
 {
     if (width <= 0)
         return String();

     String strToTruncate;
     if (fileList->isEmpty())
         strToTruncate = fileListDefaultLabel(multipleFilesAllowed);
     else if (fileList->length() == 1)
         strToTruncate = [[NSFileManager defaultManager] displayNameAtPath:(fileList->item(0)->path())];
     else
         return StringTruncator::rightTruncate(multipleFileUploadText(fileList->length()), width, font);

     return StringTruncator::centerTruncate(strToTruncate, width, font);
 }

 #if ENABLE(SERVICE_CONTROLS)
 NSServicesRolloverButtonCell* RenderThemeMac::servicesRolloverButtonCell() const
 {
     if (!m_servicesRolloverButton) {
         m_servicesRolloverButton = [NSServicesRolloverButtonCell serviceRolloverButtonCellForStyle:NSSharingServicePickerStyleRollover];
         [m_servicesRolloverButton setBezelStyle:NSBezelStyleRoundedDisclosure];
         [m_servicesRolloverButton setButtonType:NSButtonTypePushOnPushOff];
         [m_servicesRolloverButton setImagePosition:NSImageOnly];
         [m_servicesRolloverButton setState:NO];
     }

     return m_servicesRolloverButton.get();
 }

 bool RenderThemeMac::paintImageControlsButton(const RenderObject& renderer, const PaintInfo& paintInfo, const IntRect& rect)
 {
     if (paintInfo.phase != PaintPhase::BlockBackground)
         return true;

     NSServicesRolloverButtonCell *cell = servicesRolloverButtonCell();

     LocalCurrentGraphicsContext localContext(paintInfo.context());
     GraphicsContextStateSaver stateSaver(paintInfo.context());

     paintInfo.context().translate(rect.location());

     IntRect innerFrame(IntPoint(), rect.size());
     [cell drawWithFrame:innerFrame inView:documentViewFor(renderer)];
     [cell setControlView:nil];

     return true;
 }

 IntSize RenderThemeMac::imageControlsButtonSize(const RenderObject&) const
 {
     return IntSize(servicesRolloverButtonCell().cellSize);
 }

 IntSize RenderThemeMac::imageControlsButtonPositionOffset() const
 {
     // FIXME: Currently the offsets will always be the same no matter what image rect you try with.
     // This may not always be true in the future.
     static const int dummyDimension = 100;
     IntRect dummyImageRect(0, 0, dummyDimension, dummyDimension);
     NSRect bounds = [servicesRolloverButtonCell() rectForBounds:dummyImageRect preferredEdge:NSMinYEdge];

     return IntSize(dummyDimension - bounds.origin.x, bounds.origin.y);
 }
 #endif

 #if ENABLE(ATTACHMENT_ELEMENT)
 const CGFloat attachmentIconSize = 48;
 const CGFloat attachmentIconBackgroundPadding = 6;
 const CGFloat attachmentIconBackgroundSize = attachmentIconSize + attachmentIconBackgroundPadding;
 const CGFloat attachmentIconSelectionBorderThickness = 1;
 const CGFloat attachmentIconBackgroundRadius = 3;
 const CGFloat attachmentIconToTitleMargin = 2;

 static Color attachmentIconBackgroundColor() { return Color(0, 0, 0, 30); }
 static Color attachmentIconBorderColor() { return Color(255, 255, 255, 125); }

 const CGFloat attachmentTitleFontSize = 12;
 const CGFloat attachmentTitleBackgroundRadius = 3;
 const CGFloat attachmentTitleBackgroundPadding = 3;
 const CGFloat attachmentTitleMaximumWidth = 100 - (attachmentTitleBackgroundPadding * 2);
 const CFIndex attachmentTitleMaximumLineCount = 2;

 static Color attachmentTitleInactiveBackgroundColor() { return Color(204, 204, 204, 255); }
 static Color attachmentTitleInactiveTextColor() { return Color(100, 100, 100, 255); }

 const CGFloat attachmentSubtitleFontSize = 10;
 const int attachmentSubtitleWidthIncrement = 10;
 static Color attachmentSubtitleTextColor() { return Color(82, 145, 214, 255); }

 const CGFloat attachmentProgressBarWidth = 30;
 const CGFloat attachmentProgressBarHeight = 5;
 const CGFloat attachmentProgressBarOffset = -9;
 const CGFloat attachmentProgressBarBorderWidth = 1;
 static Color attachmentProgressBarBackgroundColor() { return Color(0, 0, 0, 89); }
 static Color attachmentProgressBarFillColor() { return Color(Color::white); }
 static Color attachmentProgressBarBorderColor() { return Color(0, 0, 0, 128); }

 const CGFloat attachmentPlaceholderBorderRadius = 5;
 static Color attachmentPlaceholderBorderColor() { return Color(0, 0, 0, 56); }
 const CGFloat attachmentPlaceholderBorderWidth = 2;
 const CGFloat attachmentPlaceholderBorderDashLength = 6;

 const CGFloat attachmentMargin = 3;

 enum class AttachmentLayoutStyle : uint8_t { NonSelected, Selected };

 struct AttachmentLayout {
     explicit AttachmentLayout(const RenderAttachment&, AttachmentLayoutStyle);

     struct LabelLine {
         FloatRect backgroundRect;
         FloatPoint origin;
         RetainPtr<CTLineRef> line;
     };

     Vector<LabelLine> lines;

     FloatRect iconRect;
     FloatRect iconBackgroundRect;
     FloatRect attachmentRect;

     int baseline;
     AttachmentLayoutStyle style;

     RetainPtr<CTLineRef> subtitleLine;
     FloatRect subtitleTextRect;

 private:
     void layOutTitle(const RenderAttachment&);
     void layOutSubtitle(const RenderAttachment&);

     void addTitleLine(CTLineRef, CGFloat& yOffset, Vector<CGPoint> origins, CFIndex lineIndex, const RenderAttachment&);
 };

 static Color titleTextColorForAttachment(const RenderAttachment& attachment, AttachmentLayoutStyle style)
 {
     Color result = Color::black;

     if (style == AttachmentLayoutStyle::Selected) {
         if (attachment.frame().selection().isFocusedAndActive())
             result = colorFromNSColor([NSColor alternateSelectedControlTextColor]);
         else
             result = attachmentTitleInactiveTextColor();
     }

     return attachment.style().colorByApplyingColorFilter(result);
 }

 void AttachmentLayout::addTitleLine(CTLineRef line, CGFloat& yOffset, Vector<CGPoint> origins, CFIndex lineIndex, const RenderAttachment& attachment)
 {
     CGRect lineBounds = CTLineGetBoundsWithOptions(line, 0);
     CGFloat trailingWhitespaceWidth = CTLineGetTrailingWhitespaceWidth(line);
     CGFloat lineWidthIgnoringTrailingWhitespace = lineBounds.size.width - trailingWhitespaceWidth;
     CGFloat lineHeight = CGCeiling(lineBounds.size.height);

     // Center the line relative to the icon.
     CGFloat xOffset = (attachmentIconBackgroundSize / 2) - (lineWidthIgnoringTrailingWhitespace / 2);

     if (lineIndex)
         yOffset += origins[lineIndex - 1].y - origins[lineIndex].y;

     LabelLine labelLine;
     labelLine.origin = FloatPoint(xOffset, yOffset + lineHeight - origins.last().y);
     labelLine.line = line;
     labelLine.backgroundRect = FloatRect(xOffset, yOffset, lineWidthIgnoringTrailingWhitespace, lineHeight);
     labelLine.backgroundRect.inflateX(attachmentTitleBackgroundPadding);
     labelLine.backgroundRect = encloseRectToDevicePixels(labelLine.backgroundRect, attachment.document().deviceScaleFactor());

     // If the text rects are close in size, the curved enclosing background won't
     // look right, so make them the same exact size.
     if (!lines.isEmpty()) {
         float previousBackgroundRectWidth = lines.last().backgroundRect.width();
         if (fabs(labelLine.backgroundRect.width() - previousBackgroundRectWidth) < attachmentTitleBackgroundRadius * 4) {
             float newBackgroundRectWidth = std::max(previousBackgroundRectWidth, labelLine.backgroundRect.width());
             labelLine.backgroundRect.inflateX((newBackgroundRectWidth - labelLine.backgroundRect.width()) / 2);
             lines.last().backgroundRect.inflateX((newBackgroundRectWidth - previousBackgroundRectWidth) / 2);
         }
     }

     lines.append(labelLine);
 }

 void AttachmentLayout::layOutTitle(const RenderAttachment& attachment)
 {
     CFStringRef language = 0; // By not specifying a language we use the system language.
     RetainPtr<CTFontRef> font = adoptCF(CTFontCreateUIFontForLanguage(kCTFontUIFontSystem, attachmentTitleFontSize, language));
     baseline = CGRound(attachmentIconBackgroundSize + attachmentIconToTitleMargin + CTFontGetAscent(font.get()));

     String title = attachment.attachmentElement().attachmentTitleForDisplay();
     if (title.isEmpty())
         return;

     NSDictionary *textAttributes = @{
         (__bridge id)kCTFontAttributeName: (__bridge id)font.get(),
         (__bridge id)kCTForegroundColorAttributeName: (__bridge NSColor *)cachedCGColor(titleTextColorForAttachment(attachment, style))
     };
     RetainPtr<NSAttributedString> attributedTitle = adoptNS([[NSAttributedString alloc] initWithString:title attributes:textAttributes]);
     RetainPtr<CTFramesetterRef> titleFramesetter = adoptCF(CTFramesetterCreateWithAttributedString((CFAttributedStringRef)attributedTitle.get()));

     CFRange fitRange;
     CGSize titleTextSize = CTFramesetterSuggestFrameSizeWithConstraints(titleFramesetter.get(), CFRangeMake(0, 0), nullptr, CGSizeMake(attachmentTitleMaximumWidth, CGFLOAT_MAX), &fitRange);

     RetainPtr<CGPathRef> titlePath = adoptCF(CGPathCreateWithRect(CGRectMake(0, 0, titleTextSize.width, titleTextSize.height), nullptr));
     RetainPtr<CTFrameRef> titleFrame = adoptCF(CTFramesetterCreateFrame(titleFramesetter.get(), fitRange, titlePath.get(), nullptr));

     CFArrayRef ctLines = CTFrameGetLines(titleFrame.get());
     CFIndex lineCount = CFArrayGetCount(ctLines);
     if (!lineCount)
         return;

     Vector<CGPoint> origins(lineCount);
     CTFrameGetLineOrigins(titleFrame.get(), CFRangeMake(0, 0), origins.data());

     // Lay out and record the first (attachmentTitleMaximumLineCount - 1) lines.
     CFIndex lineIndex = 0;
     CGFloat yOffset = attachmentIconBackgroundSize + attachmentIconToTitleMargin;
     for (; lineIndex < std::min(attachmentTitleMaximumLineCount - 1, lineCount); ++lineIndex) {
         CTLineRef line = (CTLineRef)CFArrayGetValueAtIndex(ctLines, lineIndex);
         addTitleLine(line, yOffset, origins, lineIndex, attachment);
     }

     if (lineIndex == lineCount)
         return;

     // We had text that didn't fit in the first (attachmentTitleMaximumLineCount - 1) lines.
     // Combine it into one last line, and center-truncate it.
     CTLineRef firstRemainingLine = (CTLineRef)CFArrayGetValueAtIndex(ctLines, lineIndex);
     CFIndex remainingRangeStart = CTLineGetStringRange(firstRemainingLine).location;
     CFRange remainingRange = CFRangeMake(remainingRangeStart, [attributedTitle length] - remainingRangeStart);
     RetainPtr<CGPathRef> remainingPath = adoptCF(CGPathCreateWithRect(CGRectMake(0, 0, CGFLOAT_MAX, CGFLOAT_MAX), nullptr));
     RetainPtr<CTFrameRef> remainingFrame = adoptCF(CTFramesetterCreateFrame(titleFramesetter.get(), remainingRange, remainingPath.get(), nullptr));
     RetainPtr<NSAttributedString> ellipsisString = adoptNS([[NSAttributedString alloc] initWithString:@"\u2026" attributes:textAttributes]);
     RetainPtr<CTLineRef> ellipsisLine = adoptCF(CTLineCreateWithAttributedString((CFAttributedStringRef)ellipsisString.get()));
     CTLineRef remainingLine = (CTLineRef)CFArrayGetValueAtIndex(CTFrameGetLines(remainingFrame.get()), 0);
     RetainPtr<CTLineRef> truncatedLine = adoptCF(CTLineCreateTruncatedLine(remainingLine, attachmentTitleMaximumWidth, kCTLineTruncationMiddle, ellipsisLine.get()));

     if (!truncatedLine)
         truncatedLine = remainingLine;

     addTitleLine(truncatedLine.get(), yOffset, origins, lineIndex, attachment);
 }

 void AttachmentLayout::layOutSubtitle(const RenderAttachment& attachment)
 {
     auto& subtitleText = attachment.attachmentElement().attributeWithoutSynchronization(subtitleAttr);
     if (subtitleText.isEmpty())
         return;

     Color subtitleColor = attachment.style().colorByApplyingColorFilter(attachmentSubtitleTextColor());
     CFStringRef language = 0; // By not specifying a language we use the system language.
     RetainPtr<CTFontRef> font = adoptCF(CTFontCreateUIFontForLanguage(kCTFontUIFontSystem, attachmentSubtitleFontSize, language));
     NSDictionary *textAttributes = @{
         (__bridge id)kCTFontAttributeName: (__bridge id)font.get(),
         (__bridge id)kCTForegroundColorAttributeName: (__bridge NSColor *)cachedCGColor(subtitleColor)
     };
     RetainPtr<NSAttributedString> attributedSubtitleText = adoptNS([[NSAttributedString alloc] initWithString:subtitleText attributes:textAttributes]);
     subtitleLine = adoptCF(CTLineCreateWithAttributedString((CFAttributedStringRef)attributedSubtitleText.get()));

     CGRect lineBounds = CTLineGetBoundsWithOptions(subtitleLine.get(), 0);

     // Center the line relative to the icon.
     CGFloat xOffset = (attachmentIconBackgroundSize / 2) - (lineBounds.size.width / 2);
     CGFloat yOffset = 0;

     if (!lines.isEmpty())
         yOffset = lines.last().backgroundRect.maxY();
     else
         yOffset = attachmentIconBackgroundSize + attachmentIconToTitleMargin;

     LabelLine labelLine;
     subtitleTextRect = FloatRect(xOffset, yOffset, lineBounds.size.width, lineBounds.size.height);
 }

 AttachmentLayout::AttachmentLayout(const RenderAttachment& attachment, AttachmentLayoutStyle layoutStyle)
     : style(layoutStyle)
 {
     layOutTitle(attachment);
     layOutSubtitle(attachment);

     iconBackgroundRect = FloatRect(0, 0, attachmentIconBackgroundSize, attachmentIconBackgroundSize);

     iconRect = iconBackgroundRect;
     iconRect.setSize(FloatSize(attachmentIconSize, attachmentIconSize));
     iconRect.move(attachmentIconBackgroundPadding / 2, attachmentIconBackgroundPadding / 2);

     attachmentRect = iconBackgroundRect;
     for (const auto& line : lines)
         attachmentRect.unite(line.backgroundRect);
     if (!subtitleTextRect.isEmpty()) {
         FloatRect roundedSubtitleTextRect = subtitleTextRect;
         roundedSubtitleTextRect.inflateX(attachmentSubtitleWidthIncrement - clampToInteger(ceilf(subtitleTextRect.width())) % attachmentSubtitleWidthIncrement);
         attachmentRect.unite(roundedSubtitleTextRect);
     }
     attachmentRect.inflate(attachmentMargin);
     attachmentRect = encloseRectToDevicePixels(attachmentRect, attachment.document().deviceScaleFactor());
 }

 LayoutSize RenderThemeMac::attachmentIntrinsicSize(const RenderAttachment& attachment) const
 {
     AttachmentLayout layout(attachment, AttachmentLayoutStyle::NonSelected);
     return LayoutSize(layout.attachmentRect.size());
 }

 int RenderThemeMac::attachmentBaseline(const RenderAttachment& attachment) const
 {
     AttachmentLayout layout(attachment, AttachmentLayoutStyle::NonSelected);
     return layout.baseline;
 }

 static void paintAttachmentIconBackground(const RenderAttachment& attachment, GraphicsContext& context, AttachmentLayout& layout)
 {
     if (layout.style == AttachmentLayoutStyle::NonSelected)
         return;

     // FIXME: Finder has a discontinuous behavior here when you have a background color other than white,
     // where it switches into 'bordered mode' and the border pops in on top of the background.
     bool paintBorder = true;

     FloatRect backgroundRect = layout.iconBackgroundRect;
     if (paintBorder)
         backgroundRect.inflate(-attachmentIconSelectionBorderThickness);

     Color backgroundColor = attachment.style().colorByApplyingColorFilter(attachmentIconBackgroundColor());
     context.fillRoundedRect(FloatRoundedRect(backgroundRect, FloatRoundedRect::Radii(attachmentIconBackgroundRadius)), backgroundColor);

     if (paintBorder) {
         FloatRect borderRect = layout.iconBackgroundRect;
         borderRect.inflate(-attachmentIconSelectionBorderThickness / 2);

         FloatSize iconBackgroundRadiusSize(attachmentIconBackgroundRadius, attachmentIconBackgroundRadius);
         Path borderPath;
         borderPath.addRoundedRect(borderRect, iconBackgroundRadiusSize);

         Color borderColor = attachment.style().colorByApplyingColorFilter(attachmentIconBorderColor());
         context.setStrokeColor(borderColor);
         context.setStrokeThickness(attachmentIconSelectionBorderThickness);
         context.strokePath(borderPath);
     }
 }

 static RefPtr<Icon> iconForAttachment(const RenderAttachment& attachment)
 {
     String attachmentType = attachment.attachmentElement().attachmentType();

     if (!attachmentType.isEmpty()) {
         if (equalIgnoringASCIICase(attachmentType, "multipart/x-folder") || equalIgnoringASCIICase(attachmentType, "application/vnd.apple.folder")) {
             if (auto icon = Icon::createIconForUTI(kUTTypeFolder))
                 return icon;
         } else {
             String UTI;
             if (isDeclaredUTI(attachmentType))
                 UTI = attachmentType;
             else
                 UTI = UTIFromMIMEType(attachmentType);

             if (auto icon = Icon::createIconForUTI(UTI))
                 return icon;
         }
     }

     if (File* file = attachment.attachmentElement().file()) {
         if (auto icon = Icon::createIconForFiles({ file->path() }))
             return icon;
     }

     NSString *fileExtension = [static_cast<NSString *>(attachment.attachmentElement().attachmentTitle()) pathExtension];
     if (fileExtension.length) {
         if (auto icon = Icon::createIconForFileExtension(fileExtension))
             return icon;
     }

     return Icon::createIconForUTI("public.data");
 }

 static void paintAttachmentIcon(const RenderAttachment& attachment, GraphicsContext& context, AttachmentLayout& layout)
 {
     auto icon = iconForAttachment(attachment);
     if (!icon)
         return;
     icon->paint(context, layout.iconRect);
 }

 static void paintAttachmentIconPlaceholder(const RenderAttachment& attachment, GraphicsContext& context, AttachmentLayout& layout)
 {
     RefPtr<Image> placeholderImage;
     float imageScale = 1;
     if (attachment.document().deviceScaleFactor() >= 2) {
         placeholderImage = Image::loadPlatformResource("AttachmentPlaceholder@2x");
         imageScale = 2;
     } else
         placeholderImage = Image::loadPlatformResource("AttachmentPlaceholder");

     // Center the placeholder image where the icon would usually be.
     FloatRect placeholderRect(0, 0, placeholderImage->width() / imageScale, placeholderImage->height() / imageScale);
     placeholderRect.setX(layout.iconRect.x() + (layout.iconRect.width() - placeholderRect.width()) / 2);
     placeholderRect.setY(layout.iconRect.y() + (layout.iconRect.height() - placeholderRect.height()) / 2);

     context.drawImage(*placeholderImage, placeholderRect);
 }

 static void paintAttachmentTitleBackground(const RenderAttachment& attachment, GraphicsContext& context, AttachmentLayout& layout)
 {
     if (layout.style == AttachmentLayoutStyle::NonSelected)
         return;

     if (layout.lines.isEmpty())
         return;

     Vector<FloatRect> backgroundRects;

     for (size_t i = 0; i < layout.lines.size(); ++i)
         backgroundRects.append(layout.lines[i].backgroundRect);

     Color backgroundColor;
     if (attachment.frame().selection().isFocusedAndActive())
         backgroundColor = colorFromNSColor([NSColor alternateSelectedControlColor]);
     else
         backgroundColor = attachmentTitleInactiveBackgroundColor();

     backgroundColor = attachment.style().colorByApplyingColorFilter(backgroundColor);
     context.setFillColor(backgroundColor);

     Path backgroundPath = PathUtilities::pathWithShrinkWrappedRects(backgroundRects, attachmentTitleBackgroundRadius);
     context.fillPath(backgroundPath);
 }

 static void paintAttachmentTitle(const RenderAttachment&, GraphicsContext& context, AttachmentLayout& layout)
 {
     for (const auto& line : layout.lines) {
         GraphicsContextStateSaver saver(context);

         context.translate(toFloatSize(line.origin));
         context.scale(FloatSize(1, -1));

         CGContextSetTextPosition(context.platformContext(), 0, 0);
         CTLineDraw(line.line.get(), context.platformContext());
     }
 }

 static void paintAttachmentSubtitle(const RenderAttachment&, GraphicsContext& context, AttachmentLayout& layout)
 {
     GraphicsContextStateSaver saver(context);

     context.translate(toFloatSize(layout.subtitleTextRect.minXMaxYCorner()));
     context.scale(FloatSize(1, -1));

     CGContextSetTextPosition(context.platformContext(), 0, 0);
     CTLineDraw(layout.subtitleLine.get(), context.platformContext());
 }

 static void paintAttachmentProgress(const RenderAttachment& attachment, GraphicsContext& context, AttachmentLayout& layout, float progress)
 {
     GraphicsContextStateSaver saver(context);

     FloatRect progressBounds((attachmentIconBackgroundSize - attachmentProgressBarWidth) / 2, layout.iconBackgroundRect.maxY() + attachmentProgressBarOffset - attachmentProgressBarHeight, attachmentProgressBarWidth, attachmentProgressBarHeight);

     FloatRect borderRect = progressBounds;
     borderRect.inflate(-0.5);
     FloatRect backgroundRect = borderRect;
     backgroundRect.inflate(-attachmentProgressBarBorderWidth / 2);

     FloatRoundedRect backgroundRoundedRect(backgroundRect, FloatRoundedRect::Radii(backgroundRect.height() / 2));
     context.fillRoundedRect(backgroundRoundedRect, attachmentProgressBarBackgroundColor());

     {
         GraphicsContextStateSaver clipSaver(context);
         context.clipRoundedRect(backgroundRoundedRect);

         FloatRect progressRect = progressBounds;
         progressRect.setWidth(progressRect.width() * progress);
         progressRect = encloseRectToDevicePixels(progressRect, attachment.document().deviceScaleFactor());

         context.fillRect(progressRect, attachmentProgressBarFillColor());
     }

     Path borderPath;
     float borderRadius = borderRect.height() / 2;
     borderPath.addRoundedRect(borderRect, FloatSize(borderRadius, borderRadius));
     context.setStrokeColor(attachmentProgressBarBorderColor());
     context.setStrokeThickness(attachmentProgressBarBorderWidth);
     context.strokePath(borderPath);
 }

 static void paintAttachmentPlaceholderBorder(const RenderAttachment& attachment, GraphicsContext& context, AttachmentLayout& layout)
 {
     Path borderPath;
     borderPath.addRoundedRect(layout.attachmentRect, FloatSize(attachmentPlaceholderBorderRadius, attachmentPlaceholderBorderRadius));

     Color placeholderBorderColor = attachment.style().colorByApplyingColorFilter(attachmentPlaceholderBorderColor());
     context.setStrokeColor(placeholderBorderColor);
     context.setStrokeThickness(attachmentPlaceholderBorderWidth);
     context.setStrokeStyle(DashedStroke);
     context.setLineDash({attachmentPlaceholderBorderDashLength}, 0);
     context.strokePath(borderPath);
 }

 bool RenderThemeMac::paintAttachment(const RenderObject& renderer, const PaintInfo& paintInfo, const IntRect& paintRect)
 {
     if (!is<RenderAttachment>(renderer))
         return false;

     const RenderAttachment& attachment = downcast<RenderAttachment>(renderer);

     auto layoutStyle = AttachmentLayoutStyle::NonSelected;
     if (attachment.selectionState() != RenderObject::SelectionNone && paintInfo.phase != PaintPhase::Selection)
         layoutStyle = AttachmentLayoutStyle::Selected;

     AttachmentLayout layout(attachment, layoutStyle);

     auto& progressString = attachment.attachmentElement().attributeWithoutSynchronization(progressAttr);
     bool validProgress = false;
     float progress = 0;
     if (!progressString.isEmpty())
         progress = progressString.toFloat(&validProgress);

     GraphicsContext& context = paintInfo.context();
     LocalCurrentGraphicsContext localContext(context);
     GraphicsContextStateSaver saver(context);

     context.translate(toFloatSize(paintRect.location()));
     context.translate(floorSizeToDevicePixels({ LayoutUnit((paintRect.width() - attachmentIconBackgroundSize) / 2), 0 }, renderer.document().deviceScaleFactor()));

     bool usePlaceholder = validProgress && !progress;

     paintAttachmentIconBackground(attachment, context, layout);
     if (usePlaceholder)
         paintAttachmentIconPlaceholder(attachment, context, layout);
     else
         paintAttachmentIcon(attachment, context, layout);

     paintAttachmentTitleBackground(attachment, context, layout);
     paintAttachmentTitle(attachment, context, layout);
     paintAttachmentSubtitle(attachment, context, layout);

     if (validProgress && progress)
         paintAttachmentProgress(attachment, context, layout, progress);

     if (usePlaceholder)
         paintAttachmentPlaceholderBorder(attachment, context, layout);

     return true;
 }

 #endif // ENABLE(ATTACHMENT_ELEMENT)

 } // namespace WebCore

 #endif // PLATFORM(MAC)