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

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 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.
  */
 #if !PLATFORM(IOS)

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

 #import "BitmapImage.h"
 #import "CSSValueKeywords.h"
 #import "CSSValueList.h"
 #import "ColorMac.h"
 #import "Document.h"
 #import "Element.h"
 #import "ExceptionCodePlaceholder.h"
 #import "FileList.h"
 #import "FloatRoundedRect.h"
 #import "FocusController.h"
 #import "Frame.h"
 #import "FrameView.h"
 #import "GraphicsContextCG.h"
 #import "HTMLAudioElement.h"
 #import "HTMLInputElement.h"
 #import "HTMLMediaElement.h"
 #import "HTMLNames.h"
 #import "HTMLPlugInImageElement.h"
 #import "Image.h"
 #import "ImageBuffer.h"
 #import "LocalCurrentGraphicsContext.h"
 #import "LocalizedStrings.h"
 #import "MediaControlElements.h"
 #import "Page.h"
 #import "PaintInfo.h"
 #import "RenderLayer.h"
 #import "RenderMedia.h"
 #import "RenderMediaControlElements.h"
 #import "RenderMediaControls.h"
 #import "RenderProgress.h"
 #import "RenderSlider.h"
 #import "RenderSnapshottedPlugIn.h"
 #import "RenderView.h"
 #import "SharedBuffer.h"
 #import "StringTruncator.h"
 #import "StyleResolver.h"
 #import "ThemeMac.h"
 #import "TimeRanges.h"
 #import "UserAgentScripts.h"
 #import "UserAgentStyleSheets.h"
 #import "WebCoreSystemInterface.h"
 #import <wtf/RetainPtr.h>
 #import <wtf/RetainPtr.h>
 #import <wtf/StdLibExtras.h>
 #import <wtf/text/StringBuilder.h>
 #import <Carbon/Carbon.h>
 #import <Cocoa/Cocoa.h>
 #import <math.h>

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

 #if defined(__LP64__) && __LP64__
 #define HAVE_APPKIT_SERVICE_CONTROLS_SUPPORT 1
 #else
 #define HAVE_APPKIT_SERVICE_CONTROLS_SUPPORT 0
 #endif

 #if ENABLE(SERVICE_CONTROLS) && HAVE(APPKIT_SERVICE_CONTROLS_SUPPORT)

 #if __has_include(<AppKit/AppKitDefines_Private.h>)
 #import <AppKit/AppKitDefines_Private.h>
 #else
 #define APPKIT_PRIVATE_CLASS
 #endif

 #if __has_include(<AppKit/NSSharingService_Private.h>)
 #import <AppKit/NSSharingService_Private.h>
 #else
 typedef enum {
     NSSharingServicePickerStyleRollover = 1
 } NSSharingServicePickerStyle;
 #endif

 #if __has_include(<AppKit/NSServicesRolloverButtonCell.h>)
 #import <AppKit/NSServicesRolloverButtonCell.h>
 #else
 @interface NSServicesRolloverButtonCell : NSButtonCell
 @end
 #endif

 @interface NSServicesRolloverButtonCell (Details)
 + (NSServicesRolloverButtonCell *)serviceRolloverButtonCellForStyle:(NSSharingServicePickerStyle)style;
 - (NSRect)rectForBounds:(NSRect)bounds preferredEdge:(NSRectEdge)preferredEdge;
 @end

 #endif // ENABLE(SERVICE_CONTROLS)

 // The methods in this file are specific to the Mac OS X platform.

 // FIXME: The platform-independent code in this class should be factored out and merged with RenderThemeSafari.

 // We estimate the animation rate of a Mac OS X progress bar is 33 fps.
 // Hard code the value here because we haven't found API for it.
 const double progressAnimationFrameRate = 0.033;

 // Mac OS X progress bar animation seems to have 256 frames.
 const double progressAnimationNumFrames = 256;

 @interface WebCoreRenderThemeNotificationObserver : NSObject
 {
     WebCore::RenderTheme *_theme;
 }

 - (id)initWithTheme:(WebCore::RenderTheme *)theme;
 - (void)systemColorsDidChange:(NSNotification *)notification;

 @end

 @implementation WebCoreRenderThemeNotificationObserver

 - (id)initWithTheme:(WebCore::RenderTheme *)theme
 {
     if (!(self = [super init]))
         return nil;

     _theme = theme;
     return self;
 }

 - (void)systemColorsDidChange:(NSNotification *)unusedNotification
 {
     ASSERT_UNUSED(unusedNotification, [[unusedNotification name] isEqualToString:NSSystemColorsDidChangeNotification]);
     _theme->platformColorsDidChange();
 }

 @end

 @interface NSTextFieldCell (WKDetails)
 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus;
 @end


 @interface WebCoreTextFieldCell : NSTextFieldCell
 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus;
 @end

 @implementation WebCoreTextFieldCell
 - (CFDictionaryRef)_coreUIDrawOptionsWithFrame:(NSRect)cellFrame inView:(NSView *)controlView includeFocus:(BOOL)includeFocus
 {
     // FIXME: This is a post-Lion-only workaround for <rdar://problem/11385461>. When that bug is resolved, we should remove this code.
     CFMutableDictionaryRef coreUIDrawOptions = CFDictionaryCreateMutableCopy(NULL, 0, [super _coreUIDrawOptionsWithFrame:cellFrame inView:controlView includeFocus:includeFocus]);
     CFDictionarySetValue(coreUIDrawOptions, @"borders only", kCFBooleanTrue);
     return (CFDictionaryRef)[NSMakeCollectable(coreUIDrawOptions) autorelease];
 }
 @end

 @interface WebCoreRenderThemeBundle : NSObject
 @end

 @implementation WebCoreRenderThemeBundle
 @end

 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
 @interface NSSearchFieldCell(Details)
 @property (getter=isCenteredLook) BOOL centeredLook;
 @end
 #endif

 namespace WebCore {

 using namespace HTMLNames;

 enum {
     topMargin,
     rightMargin,
     bottomMargin,
     leftMargin
 };

 enum {
     topPadding,
     rightPadding,
     bottomPadding,
     leftPadding
 };

 PassRefPtr<RenderTheme> RenderTheme::themeForPage(Page*)
 {
     static RenderTheme* rt = RenderThemeMac::create().leakRef();
     return rt;
 }

 PassRefPtr<RenderTheme> RenderThemeMac::create()
 {
     return adoptRef(new RenderThemeMac);
 }

 RenderThemeMac::RenderThemeMac()
     : m_isSliderThumbHorizontalPressed(false)
     , m_isSliderThumbVerticalPressed(false)
     , m_notificationObserver(adoptNS([[WebCoreRenderThemeNotificationObserver alloc] initWithTheme:this]))
 {
     [[NSNotificationCenter defaultCenter] addObserver:m_notificationObserver.get()
                                                         selector:@selector(systemColorsDidChange:)
                                                             name:NSSystemColorsDidChangeNotification
                                                           object:nil];
 }

 RenderThemeMac::~RenderThemeMac()
 {
     [[NSNotificationCenter defaultCenter] removeObserver:m_notificationObserver.get()];
 }

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

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

 String RenderThemeMac::mediaControlsScript()
 {
 #if ENABLE(MEDIA_CONTROLS_SCRIPT)
     if (m_mediaControlsScript.isEmpty()) {
         StringBuilder scriptBuilder;
         scriptBuilder.append([NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@"mediaControlsLocalizedStrings" ofType:@"js"] encoding:NSUTF8StringEncoding error:nil]);
         scriptBuilder.append([NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@"mediaControlsApple" ofType:@"js"] encoding:NSUTF8StringEncoding error:nil]);
         m_mediaControlsScript = scriptBuilder.toString();
     }
     return m_mediaControlsScript;
 #else
     return emptyString();
 #endif
 }

 #endif // ENABLE(VIDEO)


 #if ENABLE(SERVICE_CONTROLS)
 String RenderThemeMac::imageControlsStyleSheet() const
 {
     return String(imageControlsMacUserAgentStyleSheet, sizeof(imageControlsMacUserAgentStyleSheet));
 }
 #endif

 Color RenderThemeMac::platformActiveSelectionBackgroundColor() const
 {
     NSColor* color = [[NSColor selectedTextBackgroundColor] colorUsingColorSpaceName:NSDeviceRGBColorSpace];
     return Color(static_cast<int>(255.0 * [color redComponent]), static_cast<int>(255.0 * [color greenComponent]), static_cast<int>(255.0 * [color blueComponent]));
 }

 Color RenderThemeMac::platformInactiveSelectionBackgroundColor() const
 {
     NSColor* color = [[NSColor secondarySelectedControlColor] colorUsingColorSpaceName:NSDeviceRGBColorSpace];
     return Color(static_cast<int>(255.0 * [color redComponent]), static_cast<int>(255.0 * [color greenComponent]), static_cast<int>(255.0 * [color blueComponent]));
 }

 Color RenderThemeMac::platformActiveListBoxSelectionBackgroundColor() const
 {
     NSColor* color = [[NSColor alternateSelectedControlColor] colorUsingColorSpaceName:NSDeviceRGBColorSpace];
     return Color(static_cast<int>(255.0 * [color redComponent]), static_cast<int>(255.0 * [color greenComponent]), static_cast<int>(255.0 * [color blueComponent]));
 }

 Color RenderThemeMac::platformActiveListBoxSelectionForegroundColor() const
 {
     return Color::white;
 }

 Color RenderThemeMac::platformInactiveListBoxSelectionForegroundColor() const
 {
     return Color::black;
 }

 Color RenderThemeMac::platformFocusRingColor() const
 {
     if (usesTestModeFocusRingColor())
         return oldAquaFocusRingColor();

     return systemColor(CSSValueWebkitFocusRingColor);
 }

 int RenderThemeMac::platformFocusRingMaxWidth() const
 {
     // FIXME: Shouldn't this function be named platformFocusRingMinWidth? But also, I'm not sure if this function is needed - looks like
     // all platforms just used 0 for this before <http://trac.webkit.org/changeset/168397>.
     return 0;
 }

 Color RenderThemeMac::platformInactiveListBoxSelectionBackgroundColor() const
 {
     return platformInactiveSelectionBackgroundColor();
 }

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

     static FontWeight fontWeights[] = {
         FontWeight100,
         FontWeight100,
         FontWeight200,
         FontWeight300,
         FontWeight400,
         FontWeight500,
         FontWeight600,
         FontWeight600,
         FontWeight700,
         FontWeight800,
         FontWeight800,
         FontWeight900,
         FontWeight900,
         FontWeight900
     };
     return fontWeights[appKitFontWeight - 1];
 }

 void RenderThemeMac::systemFont(CSSValueID cssValueId, FontDescription& fontDescription) const
 {
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, systemFont, ());
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, smallSystemFont, ());
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, menuFont, ());
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, labelFont, ());
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, miniControlFont, ());
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, smallControlFont, ());
     DEPRECATED_DEFINE_STATIC_LOCAL(FontDescription, controlFont, ());

     FontDescription* cachedDesc;
     NSFont* font = nil;
     switch (cssValueId) {
         case CSSValueSmallCaption:
             cachedDesc = &smallSystemFont;
             if (!smallSystemFont.isAbsoluteSize())
                 font = [NSFont systemFontOfSize:[NSFont smallSystemFontSize]];
             break;
         case CSSValueMenu:
             cachedDesc = &menuFont;
             if (!menuFont.isAbsoluteSize())
                 font = [NSFont menuFontOfSize:[NSFont systemFontSize]];
             break;
         case CSSValueStatusBar:
             cachedDesc = &labelFont;
             if (!labelFont.isAbsoluteSize())
                 font = [NSFont labelFontOfSize:[NSFont labelFontSize]];
             break;
         case CSSValueWebkitMiniControl:
             cachedDesc = &miniControlFont;
             if (!miniControlFont.isAbsoluteSize())
                 font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSMiniControlSize]];
             break;
         case CSSValueWebkitSmallControl:
             cachedDesc = &smallControlFont;
             if (!smallControlFont.isAbsoluteSize())
                 font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSSmallControlSize]];
             break;
         case CSSValueWebkitControl:
             cachedDesc = &controlFont;
             if (!controlFont.isAbsoluteSize())
                 font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSRegularControlSize]];
             break;
         default:
             cachedDesc = &systemFont;
             if (!systemFont.isAbsoluteSize())
                 font = [NSFont systemFontOfSize:[NSFont systemFontSize]];
     }

     if (font) {
         NSFontManager *fontManager = [NSFontManager sharedFontManager];
         cachedDesc->setIsAbsoluteSize(true);
         cachedDesc->setGenericFamily(FontDescription::NoFamily);
         cachedDesc->setOneFamily([font webCoreFamilyName]);
         cachedDesc->setSpecifiedSize([font pointSize]);
         cachedDesc->setWeight(toFontWeight([fontManager weightOfFont:font]));
         cachedDesc->setItalic([fontManager traitsOfFont:font] & NSItalicFontMask);
     }
     fontDescription = *cachedDesc;
 }

 static RGBA32 convertNSColorToColor(NSColor *color)
 {
     NSColor *colorInColorSpace = [color colorUsingColorSpaceName:NSDeviceRGBColorSpace];
     if (colorInColorSpace) {
         static const double scaleFactor = nextafter(256.0, 0.0);
         return makeRGB(static_cast<int>(scaleFactor * [colorInColorSpace redComponent]),
             static_cast<int>(scaleFactor * [colorInColorSpace greenComponent]),
             static_cast<int>(scaleFactor * [colorInColorSpace blueComponent]));
     }

     // This conversion above can fail if the NSColor in question is an NSPatternColor
     // (as many system colors are). These colors are actually a repeating pattern
     // not just a solid color. To work around this we simply draw a 1x1 image of
     // the color and use that pixel's color. It might be better to use an average of
     // the colors in the pattern instead.
     NSBitmapImageRep *offscreenRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:nil
                                                                              pixelsWide:1
                                                                              pixelsHigh:1
                                                                           bitsPerSample:8
                                                                         samplesPerPixel:4
                                                                                hasAlpha:YES
                                                                                isPlanar:NO
                                                                          colorSpaceName:NSDeviceRGBColorSpace
                                                                             bytesPerRow:4
                                                                            bitsPerPixel:32];

     [NSGraphicsContext saveGraphicsState];
     [NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithBitmapImageRep:offscreenRep]];
     NSEraseRect(NSMakeRect(0, 0, 1, 1));
     [color drawSwatchInRect:NSMakeRect(0, 0, 1, 1)];
     [NSGraphicsContext restoreGraphicsState];

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

     [offscreenRep release];

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

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

     CGContextRef context = static_cast<CGContextRef>([[NSGraphicsContext graphicsContextWithBitmapImageRep:offscreenRep] graphicsPort]);
     CGRect rect = CGRectMake(0, 0, 1, 1);
     HIThemeMenuDrawInfo drawInfo;
     drawInfo.version =  0;
     drawInfo.menuType = kThemeMenuTypePopUp;
     HIThemeDrawMenuBackground(&rect, &drawInfo, context, kHIThemeOrientationInverted);

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

     [offscreenRep release];

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

 void RenderThemeMac::platformColorsDidChange()
 {
     m_systemColorCache.clear();
     RenderTheme::platformColorsDidChange();
 }

 Color RenderThemeMac::systemColor(CSSValueID cssValueId) const
 {
     {
         HashMap<int, RGBA32>::iterator it = m_systemColorCache.find(cssValueId);
         if (it != m_systemColorCache.end())
             return it->value;
     }

     Color color;
     switch (cssValueId) {
     case CSSValueActiveborder:
         color = convertNSColorToColor([NSColor keyboardFocusIndicatorColor]);
         break;
     case CSSValueActivecaption:
         color = convertNSColorToColor([NSColor windowFrameTextColor]);
         break;
     case CSSValueAppworkspace:
         color = convertNSColorToColor([NSColor headerColor]);
         break;
     case CSSValueBackground:
         // Use theme independent default
         break;
     case CSSValueButtonface:
         // We use this value instead of NSColor's controlColor to avoid website incompatibilities.
         // We may want to change this to use the NSColor in future.
         color = 0xFFC0C0C0;
         break;
     case CSSValueButtonhighlight:
         color = convertNSColorToColor([NSColor controlHighlightColor]);
         break;
     case CSSValueButtonshadow:
         color = convertNSColorToColor([NSColor controlShadowColor]);
         break;
     case CSSValueButtontext:
         color = convertNSColorToColor([NSColor controlTextColor]);
         break;
     case CSSValueActivebuttontext:
 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
         color = 0xC0FFFFFF;
 #endif
         break;
     case CSSValueCaptiontext:
         color = convertNSColorToColor([NSColor textColor]);
         break;
     case CSSValueGraytext:
         color = convertNSColorToColor([NSColor disabledControlTextColor]);
         break;
     case CSSValueHighlight:
         color = convertNSColorToColor([NSColor selectedTextBackgroundColor]);
         break;
     case CSSValueHighlighttext:
         color = convertNSColorToColor([NSColor selectedTextColor]);
         break;
     case CSSValueInactiveborder:
         color = convertNSColorToColor([NSColor controlBackgroundColor]);
         break;
     case CSSValueInactivecaption:
         color = convertNSColorToColor([NSColor controlBackgroundColor]);
         break;
     case CSSValueInactivecaptiontext:
         color = convertNSColorToColor([NSColor textColor]);
         break;
     case CSSValueInfobackground:
         // There is no corresponding NSColor for this so we use a hard coded value.
         color = 0xFFFBFCC5;
         break;
     case CSSValueInfotext:
         color = convertNSColorToColor([NSColor textColor]);
         break;
     case CSSValueMenu:
         color = menuBackgroundColor();
         break;
     case CSSValueMenutext:
         color = convertNSColorToColor([NSColor selectedMenuItemTextColor]);
         break;
     case CSSValueScrollbar:
         color = convertNSColorToColor([NSColor scrollBarColor]);
         break;
     case CSSValueText:
         color = convertNSColorToColor([NSColor textColor]);
         break;
     case CSSValueThreeddarkshadow:
         color = convertNSColorToColor([NSColor controlDarkShadowColor]);
         break;
     case CSSValueThreedshadow:
         color = convertNSColorToColor([NSColor shadowColor]);
         break;
     case CSSValueThreedface:
         // We use this value instead of NSColor's controlColor to avoid website incompatibilities.
         // We may want to change this to use the NSColor in future.
         color = 0xFFC0C0C0;
         break;
     case CSSValueThreedhighlight:
         color = convertNSColorToColor([NSColor highlightColor]);
         break;
     case CSSValueThreedlightshadow:
         color = convertNSColorToColor([NSColor controlLightHighlightColor]);
         break;
     case CSSValueWebkitFocusRingColor:
         color = convertNSColorToColor([NSColor keyboardFocusIndicatorColor]);
         break;
     case CSSValueWindow:
         color = convertNSColorToColor([NSColor windowBackgroundColor]);
         break;
     case CSSValueWindowframe:
         color = convertNSColorToColor([NSColor windowFrameColor]);
         break;
     case CSSValueWindowtext:
         color = convertNSColorToColor([NSColor windowFrameTextColor]);
         break;
     default:
         break;
     }

     if (!color.isValid())
         color = RenderTheme::systemColor(cssValueId);

     if (color.isValid())
         m_systemColorCache.set(cssValueId, color.rgb());

     return color;
 }

 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:
         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);
     }
 }

 FloatRect RenderThemeMac::convertToPaintingRect(const RenderObject& inputRenderer, const RenderObject& partRenderer, const FloatRect& inputRect, const IntRect& r) const
 {
     FloatRect partRect(inputRect);

     // Compute an offset between the part renderer and the input renderer
     FloatSize offsetFromInputRenderer;
     const RenderObject* renderer = &partRenderer;
     while (renderer && renderer != &inputRenderer) {
         RenderElement* containingRenderer = renderer->container();
         offsetFromInputRenderer -= roundedIntSize(renderer->offsetFromContainer(containingRenderer, LayoutPoint()));
         renderer = containingRenderer;
     }
     // If the input renderer was not a container, something went wrong
     ASSERT(renderer == &inputRenderer);
     // Move the rect into partRenderer's coords
     partRect.move(offsetFromInputRenderer);
     // Account for the local drawing offset (tx, ty)
     partRect.move(r.x(), r.y());

     return partRect;
 }

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

     if (oldIndeterminate != indeterminate) {
         [cell setState:indeterminate ? NSMixedState : (checked ? NSOnState : NSOffState)];
         return;
     }

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

 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();
     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(RenderStyle& style) const
 {
     int fontSize = style.fontSize();
     if (fontSize >= 16)
         return NSRegularControlSize;
     if (fontSize >= 11)
         return NSSmallControlSize;
     return NSMiniControlSize;
 }

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

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

     return NSMiniControlSize;
 }

 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(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(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
 {
     FontDescription fontDescription;
     fontDescription.setIsAbsoluteSize(true);
     fontDescription.setGenericFamily(FontDescription::SerifFamily);

     NSFont* font = [NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:controlSize]];
     fontDescription.setOneFamily([font webCoreFamilyName]);
     fontDescription.setComputedSize([font pointSize] * style.effectiveZoom());
     fontDescription.setSpecifiedSize([font pointSize] * style.effectiveZoom());

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

     if (style.setFontDescription(fontDescription))
         style.font().update(0);
 }

 NSControlSize RenderThemeMac::controlSizeForSystemFont(RenderStyle& style) const
 {
     int fontSize = style.fontSize();
     if (fontSize >= [NSFont systemFontSizeForControlSize:NSRegularControlSize])
         return NSRegularControlSize;
     if (fontSize >= [NSFont systemFontSizeForControlSize:NSSmallControlSize])
         return NSSmallControlSize;
     return NSMiniControlSize;
 }

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

     NSTextFieldCell *textField = this->textField();

     GraphicsContextStateSaver stateSaver(*paintInfo.context);

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

     [textField setControlView:nil];

     return false;
 }

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

 bool RenderThemeMac::paintCapsLockIndicator(const RenderObject&, const PaintInfo& paintInfo, const IntRect& r)
 {
     if (paintInfo.context->paintingDisabled())
         return true;

     LocalCurrentGraphicsContext localContext(paintInfo.context);
     wkDrawCapsLockIndicator(localContext.cgContext(), r);

     return false;
 }

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

 void RenderThemeMac::adjustTextAreaStyle(StyleResolver&, RenderStyle&, 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) const
 {
     static const int padding[3][4] =
     {
         { 2, 26, 3, 8 },
         { 2, 23, 3, 8 },
         { 2, 22, 3, 10 }
     };
     return padding[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);

     // On Leopard, the cell will draw outside of the given rect, so we have to clip to the rect
     paintInfo.context->clip(inflatedRect);

     if (zoomLevel != 1.0f) {
         inflatedRect.setWidth(inflatedRect.width() / zoomLevel);
         inflatedRect.setHeight(inflatedRect.height() / zoomLevel);
         paintInfo.context->translate(inflatedRect.x(), inflatedRect.y());
         paintInfo.context->scale(FloatSize(zoomLevel, zoomLevel));
         paintInfo.context->translate(-inflatedRect.x(), -inflatedRect.y());
     }

     NSView *view = documentViewFor(renderer);
     [popupButton drawWithFrame:inflatedRect inView:view];
     if (isFocused(renderer) && renderer.style().outlineStyleIsAuto()) {
         if (wkDrawCellFocusRingWithFrameAtTime(popupButton, inflatedRect, view, std::numeric_limits<double>::max()))
             renderer.document().page()->focusController().setFocusedElementNeedsRepaint();
     }

     [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 (!renderObject.isMeter())
         return true;

     LocalCurrentGraphicsContext localContext(paintInfo.context);

     NSLevelIndicatorCell* cell = levelIndicatorFor(toRenderMeter(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 NSRelevancyLevelIndicatorStyle;
     case DiscreteCapacityLevelIndicatorPart:
         return NSDiscreteCapacityLevelIndicatorStyle;
     case RatingLevelIndicatorPart:
         return NSRatingLevelIndicatorStyle;
     case MeterPart:
     case ContinuousCapacityLevelIndicatorPart:
     default:
         return NSContinuousCapacityLevelIndicatorStyle;
     }

 }

 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:NSContinuousCapacityLevelIndicatorStyle]);
     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 setBaseWritingDirection:style.isLeftToRightDirection() ? NSWritingDirectionLeftToRight : NSWritingDirectionRightToLeft];
     [cell setMinValue:element->min()];
     [cell setMaxValue:element->max()];
     RetainPtr<NSNumber> valueObject = [NSNumber numberWithDouble:value];
     [cell setObjectValue:valueObject.get()];

     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(RenderStyle& style) const
 {
     return sizeForSystemFont(style, progressBarSizes()).height();
 }

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

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

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

 bool RenderThemeMac::paintProgressBar(const RenderObject& renderObject, const PaintInfo& paintInfo, const IntRect& rect)
 {
     if (!renderObject.isProgress())
         return true;

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

     const RenderProgress& renderProgress = *toRenderProgress(&renderObject);
     HIThemeTrackDrawInfo trackInfo;
     trackInfo.version = 0;
     if (controlSize == NSRegularControlSize)
         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, ColorSpaceDeviceRGB, paintInfo.context, true);
     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->drawImageBuffer(imageBuffer.get(), ColorSpaceDeviceRGB, 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 arrowPaddingLeft = 6;
 const int arrowPaddingRight = 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 float dark[4] = { 1.0f, 1.0f, 1.0f, 0.4f };
     static 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 float dark[4] = { 1.0f, 1.0f, 1.0f, 0.0f };
     static 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 float dark[4] = { 0.0f, 0.0f, 0.0f, 0.15f };
     static 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 float dark[4] = { 0.0f, 0.0f, 0.0f, 0.678f };
     static 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 = deviceRGBColorSpaceRef();

     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 RenderObject& renderer, const PaintInfo& paintInfo, const FloatRect& rect)
 {
     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().fontSize() / baseFontSize, bounds.height() / (baseArrowHeight * 2 + baseSpaceBetweenArrows));
     float centerY = bounds.y() + bounds.height() / 2.0f;
     float arrowHeight = baseArrowHeight * fontScale;
     float arrowWidth = baseArrowWidth * fontScale;
     float leftEdge = bounds.maxX() - arrowPaddingRight * renderer.style().effectiveZoom() - arrowWidth;
     float spaceBetweenArrows = baseSpaceBetweenArrows * fontScale;

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

     GraphicsContextStateSaver stateSaver(*paintInfo.context);

     paintInfo.context->setFillColor(renderer.style().visitedDependentColor(CSSPropertyColor), renderer.style().colorSpace());
     paintInfo.context->setStrokeStyle(NoStroke);

     FloatPoint arrow1[3];
     arrow1[0] = FloatPoint(leftEdge, centerY - spaceBetweenArrows / 2.0f);
     arrow1[1] = FloatPoint(leftEdge + arrowWidth, centerY - spaceBetweenArrows / 2.0f);
     arrow1[2] = FloatPoint(leftEdge + arrowWidth / 2.0f, centerY - spaceBetweenArrows / 2.0f - arrowHeight);

     // Draw the top arrow
     paintInfo.context->drawConvexPolygon(3, arrow1, true);

     FloatPoint arrow2[3];
     arrow2[0] = FloatPoint(leftEdge, centerY + spaceBetweenArrows / 2.0f);
     arrow2[1] = FloatPoint(leftEdge + arrowWidth, centerY + spaceBetweenArrows / 2.0f);
     arrow2[2] = FloatPoint(leftEdge + arrowWidth / 2.0f, centerY + spaceBetweenArrows / 2.0f + arrowHeight);

     // Draw the bottom arrow
     paintInfo.context->drawConvexPolygon(3, arrow2, true);

     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 = static_cast<int>(leftEdge - arrowPaddingLeft * renderer.style().effectiveZoom()); // FIXME: Round?

     // 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, ColorSpaceDeviceRGB);
     paintInfo.context->drawLine(IntPoint(leftEdgeOfSeparator, bounds.y()),
                                 IntPoint(leftEdgeOfSeparator, bounds.maxY()));

     paintInfo.context->setStrokeColor(rightSeparatorColor, ColorSpaceDeviceRGB);
     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, 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(PRE);

     // Set the foreground color to black or gray when we have the aqua look.
     // Cast to RGB32 is to work around a compiler bug.
     style.setColor(e && !e->isDisabledFormControl() ? static_cast<RGBA32>(Color::black) : Color::darkGray);

     // 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);
 }

 int RenderThemeMac::popupInternalPaddingLeft(RenderStyle& style) const
 {
     if (style.appearance() == MenulistPart)
         return popupButtonPadding(controlSizeForFont(style))[leftPadding] * style.effectiveZoom();
     if (style.appearance() == MenulistButtonPart)
         return styledPopupPaddingLeft * style.effectiveZoom();
     return 0;
 }

 int RenderThemeMac::popupInternalPaddingRight(RenderStyle& style) const
 {
     if (style.appearance() == MenulistPart)
         return popupButtonPadding(controlSizeForFont(style))[rightPadding] * style.effectiveZoom();
     if (style.appearance() == MenulistButtonPart) {
         float fontScale = style.fontSize() / baseFontSize;
         float arrowWidth = baseArrowWidth * fontScale;
         return static_cast<int>(ceilf(arrowWidth + (arrowPaddingLeft + arrowPaddingRight + paddingBeforeSeparator) * style.effectiveZoom()));
     }
     return 0;
 }

 int RenderThemeMac::popupInternalPaddingTop(RenderStyle& style) const
 {
     if (style.appearance() == MenulistPart)
         return popupButtonPadding(controlSizeForFont(style))[topPadding] * style.effectiveZoom();
     if (style.appearance() == MenulistButtonPart)
         return styledPopupPaddingTop * style.effectiveZoom();
     return 0;
 }

 int RenderThemeMac::popupInternalPaddingBottom(RenderStyle& style) const
 {
     if (style.appearance() == MenulistPart)
         return popupButtonPadding(controlSizeForFont(style))[bottomPadding] * style.effectiveZoom();
     if (style.appearance() == MenulistButtonPart)
         return styledPopupPaddingBottom * style.effectiveZoom();
     return 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 NSRegularControlSize:
         return PopupMenuStyle::PopupMenuSizeNormal;
     case NSSmallControlSize:
         return PopupMenuStyle::PopupMenuSizeSmall;
     case NSMiniControlSize:
         return PopupMenuStyle::PopupMenuSizeMini;
     default:
         return PopupMenuStyle::PopupMenuSizeNormal;
     }
 }

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

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

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

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

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

 void RenderThemeMac::adjustSliderTrackStyle(StyleResolver&, RenderStyle& style, 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 = deviceRGBColorSpaceRef();

 #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, 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();

     LocalCurrentGraphicsContext localContext(paintInfo.context);

     // Update the various states we respond to.
     updateEnabledState(sliderThumbCell, o);
         Element* 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;

     if (pressed != oldPressed) {
         if (pressed)
             [sliderThumbCell startTrackingAt:NSPoint() inView:nil];
         else
             [sliderThumbCell stopTracking:NSPoint() at:NSPoint() inView:nil 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.setWidth(unzoomedRect.width() / zoomLevel);
         unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
         paintInfo.context->translate(unzoomedRect.x(), unzoomedRect.y());
         paintInfo.context->scale(FloatSize(zoomLevel, zoomLevel));
         paintInfo.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
     }

     [sliderThumbCell drawInteriorWithFrame:unzoomedRect inView:documentViewFor(o)];
     [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();

     IntRect unzoomedRect = r;

     if (zoomLevel != 1.0f) {
         unzoomedRect.setWidth(unzoomedRect.width() / zoomLevel);
         unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
         paintInfo.context->translate(unzoomedRect.x(), unzoomedRect.y());
         paintInfo.context->scale(FloatSize(zoomLevel, zoomLevel));
         paintInfo.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
     }

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

     [search drawWithFrame:NSRect(unzoomedRect) inView:documentViewFor(o)];

     [search setControlView:nil];
     [search resetSearchButtonCell];

     return false;
 }

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

     [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, Element*) const
 {
     // Override border.
     style.resetBorder();
     const short borderWidth = 2 * style.effectiveZoom();
     style.setBorderLeftWidth(borderWidth);
     style.setBorderLeftStyle(INSET);
     style.setBorderRightWidth(borderWidth);
     style.setBorderRightStyle(INSET);
     style.setBorderBottomWidth(borderWidth);
     style.setBorderBottomStyle(INSET);
     style.setBorderTopWidth(borderWidth);
     style.setBorderTopStyle(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 RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     Element* input = o.node()->shadowHost();
     if (!input)
         input = downcast<Element>(o.node());

     if (!input->renderer()->isBox())
         return false;

     LocalCurrentGraphicsContext localContext(paintInfo.context);
     setSearchCellState(*input->renderer(), r);

     NSSearchFieldCell* search = this->search();

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

     GraphicsContextStateSaver stateSaver(*paintInfo.context);

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

     FloatRect localBounds = [search cancelButtonRectForBounds:NSRect(input->renderBox()->pixelSnappedBorderBoxRect())];
     localBounds = convertToPaintingRect(*input->renderer(), o, localBounds, r);

     FloatRect unzoomedRect(localBounds);
     if (zoomLevel != 1.0f) {
         unzoomedRect.setWidth(unzoomedRect.width() / zoomLevel);
         unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
         paintInfo.context->translate(unzoomedRect.x(), unzoomedRect.y());
         paintInfo.context->scale(FloatSize(zoomLevel, zoomLevel));
         paintInfo.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
     }

     [[search cancelButtonCell] drawWithFrame:unzoomedRect inView:documentViewFor(o)];
     [[search cancelButtonCell] setControlView:nil];
     return false;
 }

 const IntSize* RenderThemeMac::cancelButtonSizes() const
 {
     static const IntSize sizes[3] = { IntSize(16, 13), IntSize(13, 11), IntSize(13, 9) };
     return sizes;
 }

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

 const IntSize* RenderThemeMac::resultsButtonSizes() const
 {
     static const IntSize sizes[3] = { IntSize(19, 13), IntSize(17, 11), IntSize(17, 9) };
     return sizes;
 }

 const int emptyResultsOffset = 9;
 void RenderThemeMac::adjustSearchFieldDecorationPartStyle(StyleResolver&, RenderStyle& style, 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, 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 RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     Node* input = o.node()->shadowHost();
     if (!input)
         input = o.node();
     if (!input->renderer()->isBox())
         return false;

     LocalCurrentGraphicsContext localContext(paintInfo.context);
     setSearchCellState(*input->renderer(), r);

     NSSearchFieldCell* search = this->search();

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

     FloatRect localBounds = [search searchButtonRectForBounds:NSRect(input->renderBox()->pixelSnappedBorderBoxRect())];
     localBounds = convertToPaintingRect(*input->renderer(), o, localBounds, r);

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

 const int resultsArrowWidth = 5;
 void RenderThemeMac::adjustSearchFieldResultsButtonStyle(StyleResolver&, RenderStyle& style, 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 RenderObject& o, const PaintInfo& paintInfo, const IntRect& r)
 {
     Node* input = o.node()->shadowHost();
     if (!input)
         input = o.node();
     if (!input->renderer()->isBox())
         return false;

     LocalCurrentGraphicsContext localContext(paintInfo.context);
     setSearchCellState(*input->renderer(), r);

     NSSearchFieldCell* search = this->search();

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

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

     FloatRect localBounds = [search searchButtonRectForBounds:NSRect(input->renderBox()->pixelSnappedBorderBoxRect())];
     localBounds = convertToPaintingRect(*input->renderer(), o, localBounds, r);

     IntRect unzoomedRect(localBounds);
     if (zoomLevel != 1.0f) {
         unzoomedRect.setWidth(unzoomedRect.width() / zoomLevel);
         unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
         paintInfo.context->translate(unzoomedRect.x(), unzoomedRect.y());
         paintInfo.context->scale(FloatSize(zoomLevel, zoomLevel));
         paintInfo.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
     }

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

     return false;
 }

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

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

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

     RenderSnapshottedPlugIn* plugInRenderer = toRenderSnapshottedPlugIn(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->hasLayer() && renderBox->layer() && renderBox->layer()->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, plugInRenderer->style().colorSpace(), 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, 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));
     }
 }

 bool RenderThemeMac::shouldShowPlaceholderWhenFocused() const
 {
     return true;
 }

 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];
         // We don't want the app's UI layout direction to affect the appearance of popup buttons in
         // web content, which has its own layout direction.
         // FIXME: Make this depend on the directionality of the select element, once the rest of the
         // rendering code can account for the popup arrows appearing on the other side.
         [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];
 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
         [m_search.get() setCenteredLook:NO];
 #endif
     }

     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:NSLinearSlider];
         [m_sliderThumbHorizontal.get() setControlSize:NSSmallControlSize];
         [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:NSLinearSlider];
         [m_sliderThumbVertical.get() setControlSize:NSSmallControlSize];
         [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();
 }

 String RenderThemeMac::fileListNameForWidth(const FileList* fileList, const Font& 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, StringTruncator::EnableRoundingHacks);

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

 bool RenderThemeMac::defaultButtonHasAnimation() const
 {
 #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101000
     return false;
 #else
     return true;
 #endif
 }

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

     return m_servicesRolloverButton.get();
 #else
     return nil;
 #endif
 }

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

 #if HAVE(APPKIT_SERVICE_CONTROLS_SUPPORT)
     NSServicesRolloverButtonCell *cell = servicesRolloverButtonCell();

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

     paintInfo.context->translate(rect.x(), rect.y());

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

     return true;
 }

 IntSize RenderThemeMac::imageControlsButtonSize(const RenderObject&) const
 {
 #if HAVE(APPKIT_SERVICE_CONTROLS_SUPPORT)
     return IntSize(servicesRolloverButtonCell().cellSize);
 #else
     return IntSize();
 #endif
 }

 IntSize RenderThemeMac::imageControlsButtonPositionOffset() const
 {
 #if HAVE(APPKIT_SERVICE_CONTROLS_SUPPORT)
     // 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);
 #else
     return IntSize();
 #endif
 }
 #endif

 } // namespace WebCore

 #endif // !PLATFORM(IOS)