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/*
* Copyright (C) 2005-2017 Apple Inc. All rights reserved.
* Copyright (C) 2014 Google 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.
*/
#include "config.h"
#include "RenderTheme.h"
#include "CSSValueKeywords.h"
#include "ControlStates.h"
#include "Document.h"
#include "FileList.h"
#include "FloatConversion.h"
#include "FloatRoundedRect.h"
#include "FocusController.h"
#include "FontSelector.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "GraphicsContext.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "LocalizedStrings.h"
#include "MediaControlElements.h"
#include "Page.h"
#include "PaintInfo.h"
#include "RenderStyle.h"
#include "RenderView.h"
#include "RuntimeEnabledFeatures.h"
#include "SpinButtonElement.h"
#include "StringTruncator.h"
#include "TextControlInnerElements.h"
#include <wtf/FileSystem.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/text/StringConcatenateNumbers.h>
#if ENABLE(METER_ELEMENT)
#include "HTMLMeterElement.h"
#include "RenderMeter.h"
#endif
#if ENABLE(DATALIST_ELEMENT)
#include "HTMLCollection.h"
#include "HTMLDataListElement.h"
#include "HTMLOptionElement.h"
#include "HTMLParserIdioms.h"
#endif
#if USE(NEW_THEME)
#include "Theme.h"
#endif
namespace WebCore {
using namespace HTMLNames;
static Color& customFocusRingColor()
{
static NeverDestroyed<Color> color;
return color;
}
RenderTheme::RenderTheme()
{
}
void RenderTheme::adjustStyle(RenderStyle& style, const Element* element, const RenderStyle* userAgentAppearanceStyle)
{
// Force inline and table display styles to be inline-block (except for table- which is block)
ControlPart part = style.appearance();
if (style.display() == DisplayType::Inline || style.display() == DisplayType::InlineTable || style.display() == DisplayType::TableRowGroup
|| style.display() == DisplayType::TableHeaderGroup || style.display() == DisplayType::TableFooterGroup
|| style.display() == DisplayType::TableRow || style.display() == DisplayType::TableColumnGroup || style.display() == DisplayType::TableColumn
|| style.display() == DisplayType::TableCell || style.display() == DisplayType::TableCaption)
style.setDisplay(DisplayType::InlineBlock);
else if (style.display() == DisplayType::Compact || style.display() == DisplayType::ListItem || style.display() == DisplayType::Table)
style.setDisplay(DisplayType::Block);
if (userAgentAppearanceStyle && isControlStyled(style, *userAgentAppearanceStyle)) {
switch (part) {
case MenulistPart:
style.setAppearance(MenulistButtonPart);
part = MenulistButtonPart;
break;
case TextFieldPart:
adjustTextFieldStyle(style, element);
FALLTHROUGH;
default:
style.setAppearance(NoControlPart);
break;
}
}
if (!style.hasAppearance())
return;
// Never support box-shadow on native controls.
style.setBoxShadow(nullptr);
#if USE(NEW_THEME)
switch (part) {
case CheckboxPart:
case InnerSpinButtonPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case DefaultButtonPart:
case ButtonPart: {
// Border
LengthBox borderBox(style.borderTopWidth(), style.borderRightWidth(), style.borderBottomWidth(), style.borderLeftWidth());
borderBox = Theme::singleton().controlBorder(part, style.fontCascade(), borderBox, style.effectiveZoom());
if (borderBox.top().value() != static_cast<int>(style.borderTopWidth())) {
if (borderBox.top().value())
style.setBorderTopWidth(borderBox.top().value());
else
style.resetBorderTop();
}
if (borderBox.right().value() != static_cast<int>(style.borderRightWidth())) {
if (borderBox.right().value())
style.setBorderRightWidth(borderBox.right().value());
else
style.resetBorderRight();
}
if (borderBox.bottom().value() != static_cast<int>(style.borderBottomWidth())) {
style.setBorderBottomWidth(borderBox.bottom().value());
if (borderBox.bottom().value())
style.setBorderBottomWidth(borderBox.bottom().value());
else
style.resetBorderBottom();
}
if (borderBox.left().value() != static_cast<int>(style.borderLeftWidth())) {
style.setBorderLeftWidth(borderBox.left().value());
if (borderBox.left().value())
style.setBorderLeftWidth(borderBox.left().value());
else
style.resetBorderLeft();
}
// Padding
LengthBox paddingBox = Theme::singleton().controlPadding(part, style.fontCascade(), style.paddingBox(), style.effectiveZoom());
if (paddingBox != style.paddingBox())
style.setPaddingBox(WTFMove(paddingBox));
// Whitespace
if (Theme::singleton().controlRequiresPreWhiteSpace(part))
style.setWhiteSpace(WhiteSpace::Pre);
// Width / Height
// The width and height here are affected by the zoom.
// FIXME: Check is flawed, since it doesn't take min-width/max-width into account.
LengthSize controlSize = Theme::singleton().controlSize(part, style.fontCascade(), { style.width(), style.height() }, style.effectiveZoom());
if (controlSize.width != style.width())
style.setWidth(WTFMove(controlSize.width));
if (controlSize.height != style.height())
style.setHeight(WTFMove(controlSize.height));
// Min-Width / Min-Height
LengthSize minControlSize = Theme::singleton().minimumControlSize(part, style.fontCascade(), style.effectiveZoom());
if (minControlSize.width != style.minWidth())
style.setMinWidth(WTFMove(minControlSize.width));
if (minControlSize.height != style.minHeight())
style.setMinHeight(WTFMove(minControlSize.height));
// Font
if (auto themeFont = Theme::singleton().controlFont(part, style.fontCascade(), style.effectiveZoom())) {
// If overriding the specified font with the theme font, also override the line height with the standard line height.
style.setLineHeight(RenderStyle::initialLineHeight());
if (style.setFontDescription(WTFMove(themeFont.value())))
style.fontCascade().update(nullptr);
}
// Special style that tells enabled default buttons in active windows to use the ActiveButtonText color.
// The active window part of the test has to be done at paint time since it's not triggered by a style change.
style.setInsideDefaultButton(part == DefaultButtonPart && element && !element->isDisabledFormControl());
break;
}
default:
break;
}
#endif
// Call the appropriate style adjustment method based off the appearance value.
switch (style.appearance()) {
#if !USE(NEW_THEME)
case CheckboxPart:
return adjustCheckboxStyle(style, element);
case RadioPart:
return adjustRadioStyle(style, element);
case PushButtonPart:
case SquareButtonPart:
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case DefaultButtonPart:
case ButtonPart:
return adjustButtonStyle(style, element);
case InnerSpinButtonPart:
return adjustInnerSpinButtonStyle(style, element);
#endif
case TextFieldPart:
return adjustTextFieldStyle(style, element);
case TextAreaPart:
return adjustTextAreaStyle(style, element);
case MenulistPart:
return adjustMenuListStyle(style, element);
case MenulistButtonPart:
return adjustMenuListButtonStyle(style, element);
case MediaPlayButtonPart:
case MediaCurrentTimePart:
case MediaTimeRemainingPart:
case MediaEnterFullscreenButtonPart:
case MediaExitFullscreenButtonPart:
case MediaMuteButtonPart:
case MediaVolumeSliderContainerPart:
return adjustMediaControlStyle(style, element);
case MediaSliderPart:
case MediaVolumeSliderPart:
case MediaFullScreenVolumeSliderPart:
case SliderHorizontalPart:
case SliderVerticalPart:
return adjustSliderTrackStyle(style, element);
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
return adjustSliderThumbStyle(style, element);
case SearchFieldPart:
return adjustSearchFieldStyle(style, element);
case SearchFieldCancelButtonPart:
return adjustSearchFieldCancelButtonStyle(style, element);
case SearchFieldDecorationPart:
return adjustSearchFieldDecorationPartStyle(style, element);
case SearchFieldResultsDecorationPart:
return adjustSearchFieldResultsDecorationPartStyle(style, element);
case SearchFieldResultsButtonPart:
return adjustSearchFieldResultsButtonStyle(style, element);
case ProgressBarPart:
return adjustProgressBarStyle(style, element);
#if ENABLE(METER_ELEMENT)
case MeterPart:
case RelevancyLevelIndicatorPart:
case ContinuousCapacityLevelIndicatorPart:
case DiscreteCapacityLevelIndicatorPart:
case RatingLevelIndicatorPart:
return adjustMeterStyle(style, element);
#endif
#if ENABLE(SERVICE_CONTROLS)
case ImageControlsButtonPart:
break;
#endif
case CapsLockIndicatorPart:
return adjustCapsLockIndicatorStyle(style, element);
#if ENABLE(APPLE_PAY)
case ApplePayButtonPart:
return adjustApplePayButtonStyle(style, element);
#endif
#if ENABLE(ATTACHMENT_ELEMENT)
case AttachmentPart:
case BorderlessAttachmentPart:
return adjustAttachmentStyle(style, element);
#endif
#if ENABLE(DATALIST_ELEMENT)
case ListButtonPart:
return adjustListButtonStyle(style, element);
#endif
default:
break;
}
}
bool RenderTheme::paint(const RenderBox& box, ControlStates& controlStates, const PaintInfo& paintInfo, const LayoutRect& rect)
{
// If painting is disabled, but we aren't updating control tints, then just bail.
// If we are updating control tints, just schedule a repaint if the theme supports tinting
// for that control.
if (paintInfo.context().invalidatingControlTints()) {
if (controlSupportsTints(box))
box.repaint();
return false;
}
if (paintInfo.context().paintingDisabled())
return false;
if (UNLIKELY(!paintInfo.context().hasPlatformContext()))
return false;
ControlPart part = box.style().appearance();
IntRect integralSnappedRect = snappedIntRect(rect);
float deviceScaleFactor = box.document().deviceScaleFactor();
FloatRect devicePixelSnappedRect = snapRectToDevicePixels(rect, deviceScaleFactor);
#if USE(NEW_THEME)
float pageScaleFactor = box.page().pageScaleFactor();
switch (part) {
case CheckboxPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case DefaultButtonPart:
case ButtonPart:
case InnerSpinButtonPart:
updateControlStatesForRenderer(box, controlStates);
Theme::singleton().paint(part, controlStates, paintInfo.context(), devicePixelSnappedRect, box.style().effectiveZoom(), &box.view().frameView(), deviceScaleFactor, pageScaleFactor, box.document().useSystemAppearance(), box.useDarkAppearance());
return false;
default:
break;
}
#else
UNUSED_PARAM(controlStates);
#endif
// Call the appropriate paint method based off the appearance value.
switch (part) {
#if !USE(NEW_THEME)
case CheckboxPart:
return paintCheckbox(box, paintInfo, integralSnappedRect);
case RadioPart:
return paintRadio(box, paintInfo, integralSnappedRect);
case PushButtonPart:
case SquareButtonPart:
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case DefaultButtonPart:
case ButtonPart:
return paintButton(box, paintInfo, integralSnappedRect);
case InnerSpinButtonPart:
return paintInnerSpinButton(box, paintInfo, integralSnappedRect);
#endif
case MenulistPart:
return paintMenuList(box, paintInfo, devicePixelSnappedRect);
#if ENABLE(METER_ELEMENT)
case MeterPart:
case RelevancyLevelIndicatorPart:
case ContinuousCapacityLevelIndicatorPart:
case DiscreteCapacityLevelIndicatorPart:
case RatingLevelIndicatorPart:
return paintMeter(box, paintInfo, integralSnappedRect);
#endif
case ProgressBarPart:
return paintProgressBar(box, paintInfo, integralSnappedRect);
case SliderHorizontalPart:
case SliderVerticalPart:
return paintSliderTrack(box, paintInfo, integralSnappedRect);
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
return paintSliderThumb(box, paintInfo, integralSnappedRect);
case MediaEnterFullscreenButtonPart:
case MediaExitFullscreenButtonPart:
return paintMediaFullscreenButton(box, paintInfo, integralSnappedRect);
case MediaPlayButtonPart:
return paintMediaPlayButton(box, paintInfo, integralSnappedRect);
case MediaOverlayPlayButtonPart:
return paintMediaOverlayPlayButton(box, paintInfo, integralSnappedRect);
case MediaMuteButtonPart:
return paintMediaMuteButton(box, paintInfo, integralSnappedRect);
case MediaSeekBackButtonPart:
return paintMediaSeekBackButton(box, paintInfo, integralSnappedRect);
case MediaSeekForwardButtonPart:
return paintMediaSeekForwardButton(box, paintInfo, integralSnappedRect);
case MediaRewindButtonPart:
return paintMediaRewindButton(box, paintInfo, integralSnappedRect);
case MediaReturnToRealtimeButtonPart:
return paintMediaReturnToRealtimeButton(box, paintInfo, integralSnappedRect);
case MediaToggleClosedCaptionsButtonPart:
return paintMediaToggleClosedCaptionsButton(box, paintInfo, integralSnappedRect);
case MediaSliderPart:
return paintMediaSliderTrack(box, paintInfo, integralSnappedRect);
case MediaSliderThumbPart:
return paintMediaSliderThumb(box, paintInfo, integralSnappedRect);
case MediaVolumeSliderMuteButtonPart:
return paintMediaMuteButton(box, paintInfo, integralSnappedRect);
case MediaVolumeSliderContainerPart:
return paintMediaVolumeSliderContainer(box, paintInfo, integralSnappedRect);
case MediaVolumeSliderPart:
return paintMediaVolumeSliderTrack(box, paintInfo, integralSnappedRect);
case MediaVolumeSliderThumbPart:
return paintMediaVolumeSliderThumb(box, paintInfo, integralSnappedRect);
case MediaFullScreenVolumeSliderPart:
return paintMediaFullScreenVolumeSliderTrack(box, paintInfo, integralSnappedRect);
case MediaFullScreenVolumeSliderThumbPart:
return paintMediaFullScreenVolumeSliderThumb(box, paintInfo, integralSnappedRect);
case MediaTimeRemainingPart:
return paintMediaTimeRemaining(box, paintInfo, integralSnappedRect);
case MediaCurrentTimePart:
return paintMediaCurrentTime(box, paintInfo, integralSnappedRect);
case MediaControlsBackgroundPart:
return paintMediaControlsBackground(box, paintInfo, integralSnappedRect);
case MenulistButtonPart:
case TextFieldPart:
case TextAreaPart:
case ListboxPart:
return true;
case SearchFieldPart:
return paintSearchField(box, paintInfo, integralSnappedRect);
case SearchFieldCancelButtonPart:
return paintSearchFieldCancelButton(box, paintInfo, integralSnappedRect);
case SearchFieldDecorationPart:
return paintSearchFieldDecorationPart(box, paintInfo, integralSnappedRect);
case SearchFieldResultsDecorationPart:
return paintSearchFieldResultsDecorationPart(box, paintInfo, integralSnappedRect);
case SearchFieldResultsButtonPart:
return paintSearchFieldResultsButton(box, paintInfo, integralSnappedRect);
case SnapshottedPluginOverlayPart:
return paintSnapshottedPluginOverlay(box, paintInfo, integralSnappedRect);
#if ENABLE(SERVICE_CONTROLS)
case ImageControlsButtonPart:
return paintImageControlsButton(box, paintInfo, integralSnappedRect);
#endif
case CapsLockIndicatorPart:
return paintCapsLockIndicator(box, paintInfo, integralSnappedRect);
#if ENABLE(APPLE_PAY)
case ApplePayButtonPart:
return paintApplePayButton(box, paintInfo, integralSnappedRect);
#endif
#if ENABLE(ATTACHMENT_ELEMENT)
case AttachmentPart:
case BorderlessAttachmentPart:
return paintAttachment(box, paintInfo, integralSnappedRect);
#endif
default:
break;
}
return true; // We don't support the appearance, so let the normal background/border paint.
}
bool RenderTheme::paintBorderOnly(const RenderBox& box, const PaintInfo& paintInfo, const LayoutRect& rect)
{
if (paintInfo.context().paintingDisabled())
return false;
#if PLATFORM(IOS_FAMILY)
UNUSED_PARAM(rect);
return box.style().appearance() != NoControlPart;
#else
FloatRect devicePixelSnappedRect = snapRectToDevicePixels(rect, box.document().deviceScaleFactor());
// Call the appropriate paint method based off the appearance value.
switch (box.style().appearance()) {
case TextFieldPart:
return paintTextField(box, paintInfo, devicePixelSnappedRect);
case ListboxPart:
case TextAreaPart:
return paintTextArea(box, paintInfo, devicePixelSnappedRect);
case MenulistButtonPart:
case SearchFieldPart:
return true;
case CheckboxPart:
case RadioPart:
case PushButtonPart:
case SquareButtonPart:
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case DefaultButtonPart:
case ButtonPart:
case MenulistPart:
#if ENABLE(METER_ELEMENT)
case MeterPart:
case RelevancyLevelIndicatorPart:
case ContinuousCapacityLevelIndicatorPart:
case DiscreteCapacityLevelIndicatorPart:
case RatingLevelIndicatorPart:
#endif
case ProgressBarPart:
case SliderHorizontalPart:
case SliderVerticalPart:
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
case SearchFieldCancelButtonPart:
case SearchFieldDecorationPart:
case SearchFieldResultsDecorationPart:
case SearchFieldResultsButtonPart:
#if ENABLE(SERVICE_CONTROLS)
case ImageControlsButtonPart:
#endif
default:
break;
}
return false;
#endif
}
bool RenderTheme::paintDecorations(const RenderBox& box, const PaintInfo& paintInfo, const LayoutRect& rect)
{
if (paintInfo.context().paintingDisabled())
return false;
IntRect integralSnappedRect = snappedIntRect(rect);
FloatRect devicePixelSnappedRect = snapRectToDevicePixels(rect, box.document().deviceScaleFactor());
// Call the appropriate paint method based off the appearance value.
switch (box.style().appearance()) {
case MenulistButtonPart:
return paintMenuListButtonDecorations(box, paintInfo, devicePixelSnappedRect);
case TextFieldPart:
return paintTextFieldDecorations(box, paintInfo, devicePixelSnappedRect);
case TextAreaPart:
return paintTextAreaDecorations(box, paintInfo, devicePixelSnappedRect);
case CheckboxPart:
return paintCheckboxDecorations(box, paintInfo, integralSnappedRect);
case RadioPart:
return paintRadioDecorations(box, paintInfo, integralSnappedRect);
case PushButtonPart:
return paintPushButtonDecorations(box, paintInfo, integralSnappedRect);
case SquareButtonPart:
return paintSquareButtonDecorations(box, paintInfo, integralSnappedRect);
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case ButtonPart:
return paintButtonDecorations(box, paintInfo, integralSnappedRect);
case MenulistPart:
return paintMenuListDecorations(box, paintInfo, integralSnappedRect);
case SliderThumbHorizontalPart:
case SliderThumbVerticalPart:
return paintSliderThumbDecorations(box, paintInfo, integralSnappedRect);
case SearchFieldPart:
return paintSearchFieldDecorations(box, paintInfo, integralSnappedRect);
#if ENABLE(METER_ELEMENT)
case MeterPart:
case RelevancyLevelIndicatorPart:
case ContinuousCapacityLevelIndicatorPart:
case DiscreteCapacityLevelIndicatorPart:
case RatingLevelIndicatorPart:
#endif
case ProgressBarPart:
case SliderHorizontalPart:
case SliderVerticalPart:
case ListboxPart:
case DefaultButtonPart:
case SearchFieldCancelButtonPart:
case SearchFieldDecorationPart:
case SearchFieldResultsDecorationPart:
case SearchFieldResultsButtonPart:
#if ENABLE(SERVICE_CONTROLS)
case ImageControlsButtonPart:
#endif
default:
break;
}
return false;
}
#if ENABLE(VIDEO)
String RenderTheme::formatMediaControlsTime(float time) const
{
if (!std::isfinite(time))
time = 0;
// FIXME: Seems like it would be better to use std::lround here.
int seconds = static_cast<int>(std::abs(time));
int hours = seconds / (60 * 60);
int minutes = (seconds / 60) % 60;
seconds %= 60;
if (hours)
return makeString((time < 0 ? "-" : ""), hours, ':', pad('0', 2, minutes), ':', pad('0', 2, seconds));
return makeString((time < 0 ? "-" : ""), pad('0', 2, minutes), ':', pad('0', 2, seconds));
}
String RenderTheme::formatMediaControlsCurrentTime(float currentTime, float /*duration*/) const
{
return formatMediaControlsTime(currentTime);
}
String RenderTheme::formatMediaControlsRemainingTime(float currentTime, float duration) const
{
return formatMediaControlsTime(currentTime - duration);
}
LayoutPoint RenderTheme::volumeSliderOffsetFromMuteButton(const RenderBox& muteButtonBox, const LayoutSize& size) const
{
LayoutUnit y = -size.height();
FloatPoint absPoint = muteButtonBox.localToAbsolute(FloatPoint(muteButtonBox.offsetLeft(), y), IsFixed | UseTransforms);
if (absPoint.y() < 0)
y = muteButtonBox.height();
return LayoutPoint(0_lu, y);
}
#endif
Color RenderTheme::activeSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.activeSelectionBackgroundColor.isValid())
cache.activeSelectionBackgroundColor = transformSelectionBackgroundColor(platformActiveSelectionBackgroundColor(options), options);
return cache.activeSelectionBackgroundColor;
}
Color RenderTheme::inactiveSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.inactiveSelectionBackgroundColor.isValid())
cache.inactiveSelectionBackgroundColor = transformSelectionBackgroundColor(platformInactiveSelectionBackgroundColor(options), options);
return cache.inactiveSelectionBackgroundColor;
}
Color RenderTheme::transformSelectionBackgroundColor(const Color& color, OptionSet<StyleColor::Options>) const
{
return color.blendWithWhite();
}
Color RenderTheme::activeSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.activeSelectionForegroundColor.isValid() && supportsSelectionForegroundColors(options))
cache.activeSelectionForegroundColor = platformActiveSelectionForegroundColor(options);
return cache.activeSelectionForegroundColor;
}
Color RenderTheme::inactiveSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.inactiveSelectionForegroundColor.isValid() && supportsSelectionForegroundColors(options))
cache.inactiveSelectionForegroundColor = platformInactiveSelectionForegroundColor(options);
return cache.inactiveSelectionForegroundColor;
}
Color RenderTheme::activeListBoxSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.activeListBoxSelectionBackgroundColor.isValid())
cache.activeListBoxSelectionBackgroundColor = platformActiveListBoxSelectionBackgroundColor(options);
return cache.activeListBoxSelectionBackgroundColor;
}
Color RenderTheme::inactiveListBoxSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.inactiveListBoxSelectionBackgroundColor.isValid())
cache.inactiveListBoxSelectionBackgroundColor = platformInactiveListBoxSelectionBackgroundColor(options);
return cache.inactiveListBoxSelectionBackgroundColor;
}
Color RenderTheme::activeListBoxSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.activeListBoxSelectionForegroundColor.isValid() && supportsListBoxSelectionForegroundColors(options))
cache.activeListBoxSelectionForegroundColor = platformActiveListBoxSelectionForegroundColor(options);
return cache.activeListBoxSelectionForegroundColor;
}
Color RenderTheme::inactiveListBoxSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.inactiveListBoxSelectionForegroundColor.isValid() && supportsListBoxSelectionForegroundColors(options))
cache.inactiveListBoxSelectionForegroundColor = platformInactiveListBoxSelectionForegroundColor(options);
return cache.inactiveListBoxSelectionForegroundColor;
}
Color RenderTheme::platformActiveSelectionBackgroundColor(OptionSet<StyleColor::Options>) const
{
// Use a blue color by default if the platform theme doesn't define anything.
return Color(0, 0, 255);
}
Color RenderTheme::platformActiveSelectionForegroundColor(OptionSet<StyleColor::Options>) const
{
// Use a white color by default if the platform theme doesn't define anything.
return Color::white;
}
Color RenderTheme::platformInactiveSelectionBackgroundColor(OptionSet<StyleColor::Options>) const
{
// Use a grey color by default if the platform theme doesn't define anything.
// This color matches Firefox's inactive color.
return Color(176, 176, 176);
}
Color RenderTheme::platformInactiveSelectionForegroundColor(OptionSet<StyleColor::Options>) const
{
// Use a black color by default.
return Color::black;
}
Color RenderTheme::platformActiveListBoxSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
{
return platformActiveSelectionBackgroundColor(options);
}
Color RenderTheme::platformActiveListBoxSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
{
return platformActiveSelectionForegroundColor(options);
}
Color RenderTheme::platformInactiveListBoxSelectionBackgroundColor(OptionSet<StyleColor::Options> options) const
{
return platformInactiveSelectionBackgroundColor(options);
}
Color RenderTheme::platformInactiveListBoxSelectionForegroundColor(OptionSet<StyleColor::Options> options) const
{
return platformInactiveSelectionForegroundColor(options);
}
int RenderTheme::baselinePosition(const RenderBox& box) const
{
#if USE(NEW_THEME)
return box.height() + box.marginTop() + Theme::singleton().baselinePositionAdjustment(box.style().appearance()) * box.style().effectiveZoom();
#else
return box.height() + box.marginTop();
#endif
}
bool RenderTheme::isControlContainer(ControlPart appearance) const
{
// There are more leaves than this, but we'll patch this function as we add support for
// more controls.
return appearance != CheckboxPart && appearance != RadioPart;
}
bool RenderTheme::isControlStyled(const RenderStyle& style, const RenderStyle& userAgentStyle) const
{
switch (style.appearance()) {
case PushButtonPart:
case SquareButtonPart:
#if ENABLE(INPUT_TYPE_COLOR)
case ColorWellPart:
#endif
case DefaultButtonPart:
case ButtonPart:
case ListboxPart:
case MenulistPart:
case ProgressBarPart:
case MeterPart:
case RelevancyLevelIndicatorPart:
case ContinuousCapacityLevelIndicatorPart:
case DiscreteCapacityLevelIndicatorPart:
case RatingLevelIndicatorPart:
// FIXME: SearchFieldPart should be included here when making search fields style-able.
case TextFieldPart:
case TextAreaPart:
// Test the style to see if the UA border and background match.
return style.border() != userAgentStyle.border()
|| style.backgroundLayers() != userAgentStyle.backgroundLayers()
|| !style.backgroundColorEqualsToColorIgnoringVisited(userAgentStyle.backgroundColor());
default:
return false;
}
}
void RenderTheme::adjustRepaintRect(const RenderObject& renderer, FloatRect& rect)
{
#if USE(NEW_THEME)
ControlStates states(extractControlStatesForRenderer(renderer));
Theme::singleton().inflateControlPaintRect(renderer.style().appearance(), states, rect, renderer.style().effectiveZoom());
#else
UNUSED_PARAM(renderer);
UNUSED_PARAM(rect);
#endif
}
bool RenderTheme::supportsFocusRing(const RenderStyle& style) const
{
return (style.hasAppearance() && style.appearance() != TextFieldPart && style.appearance() != TextAreaPart && style.appearance() != MenulistButtonPart && style.appearance() != ListboxPart);
}
bool RenderTheme::stateChanged(const RenderObject& o, ControlStates::States state) const
{
// Default implementation assumes the controls don't respond to changes in :hover state
if (state == ControlStates::HoverState && !supportsHover(o.style()))
return false;
// Assume pressed state is only responded to if the control is enabled.
if (state == ControlStates::PressedState && !isEnabled(o))
return false;
// Repaint the control.
o.repaint();
return true;
}
void RenderTheme::updateControlStatesForRenderer(const RenderBox& box, ControlStates& controlStates) const
{
ControlStates newStates = extractControlStatesForRenderer(box);
controlStates.setStates(newStates.states());
if (isFocused(box))
controlStates.setTimeSinceControlWasFocused(box.page().focusController().timeSinceFocusWasSet());
}
ControlStates::States RenderTheme::extractControlStatesForRenderer(const RenderObject& o) const
{
ControlStates::States states = 0;
if (isHovered(o)) {
states |= ControlStates::HoverState;
if (isSpinUpButtonPartHovered(o))
states |= ControlStates::SpinUpState;
}
if (isPressed(o)) {
states |= ControlStates::PressedState;
if (isSpinUpButtonPartPressed(o))
states |= ControlStates::SpinUpState;
}
if (isFocused(o) && o.style().outlineStyleIsAuto() == OutlineIsAuto::On)
states |= ControlStates::FocusState;
if (isEnabled(o))
states |= ControlStates::EnabledState;
if (isChecked(o))
states |= ControlStates::CheckedState;
if (isDefault(o))
states |= ControlStates::DefaultState;
if (!isActive(o))
states |= ControlStates::WindowInactiveState;
if (isIndeterminate(o))
states |= ControlStates::IndeterminateState;
if (isPresenting(o))
states |= ControlStates::PresentingState;
return states;
}
bool RenderTheme::isActive(const RenderObject& renderer) const
{
return renderer.page().focusController().isActive();
}
bool RenderTheme::isChecked(const RenderObject& o) const
{
return is<HTMLInputElement>(o.node()) && downcast<HTMLInputElement>(*o.node()).shouldAppearChecked();
}
bool RenderTheme::isIndeterminate(const RenderObject& o) const
{
return is<HTMLInputElement>(o.node()) && downcast<HTMLInputElement>(*o.node()).shouldAppearIndeterminate();
}
bool RenderTheme::isEnabled(const RenderObject& renderer) const
{
Node* node = renderer.node();
if (!is<Element>(node))
return true;
return !downcast<Element>(*node).isDisabledFormControl();
}
bool RenderTheme::isFocused(const RenderObject& renderer) const
{
Node* node = renderer.node();
if (!is<Element>(node))
return false;
auto focusDelegate = downcast<Element>(*node).focusDelegate();
Document& document = focusDelegate->document();
Frame* frame = document.frame();
return focusDelegate == document.focusedElement() && frame && frame->selection().isFocusedAndActive();
}
bool RenderTheme::isPressed(const RenderObject& renderer) const
{
if (!is<Element>(renderer.node()))
return false;
return downcast<Element>(*renderer.node()).active();
}
bool RenderTheme::isSpinUpButtonPartPressed(const RenderObject& renderer) const
{
Node* node = renderer.node();
if (!is<Element>(node))
return false;
Element& element = downcast<Element>(*node);
if (!element.active() || !is<SpinButtonElement>(element))
return false;
return downcast<SpinButtonElement>(element).upDownState() == SpinButtonElement::Up;
}
bool RenderTheme::isReadOnlyControl(const RenderObject& renderer) const
{
Node* node = renderer.node();
if (!is<HTMLFormControlElement>(node))
return false;
return !downcast<Element>(*node).matchesReadWritePseudoClass();
}
bool RenderTheme::isHovered(const RenderObject& renderer) const
{
Node* node = renderer.node();
if (!is<Element>(node))
return false;
Element& element = downcast<Element>(*node);
if (!is<SpinButtonElement>(element))
return element.hovered();
SpinButtonElement& spinButton = downcast<SpinButtonElement>(element);
return spinButton.hovered() && spinButton.upDownState() != SpinButtonElement::Indeterminate;
}
bool RenderTheme::isSpinUpButtonPartHovered(const RenderObject& renderer) const
{
Node* node = renderer.node();
if (!is<SpinButtonElement>(node))
return false;
return downcast<SpinButtonElement>(*node).upDownState() == SpinButtonElement::Up;
}
bool RenderTheme::isPresenting(const RenderObject& o) const
{
return is<HTMLInputElement>(o.node()) && downcast<HTMLInputElement>(*o.node()).isPresentingAttachedView();
}
bool RenderTheme::isDefault(const RenderObject& o) const
{
// A button should only have the default appearance if the page is active
if (!isActive(o))
return false;
return o.style().appearance() == DefaultButtonPart;
}
#if !USE(NEW_THEME)
void RenderTheme::adjustCheckboxStyle(RenderStyle& style, const Element*) const
{
// A summary of the rules for checkbox designed to match WinIE:
// width/height - honored (WinIE actually scales its control for small widths, but lets it overflow for small heights.)
// font-size - not honored (control has no text), but we use it to decide which control size to use.
setCheckboxSize(style);
// padding - not honored by WinIE, needs to be removed.
style.resetPadding();
// border - honored by WinIE, but looks terrible (just paints in the control box and turns off the Windows XP theme)
// for now, we will not honor it.
style.resetBorder();
style.setBoxShadow(nullptr);
}
void RenderTheme::adjustRadioStyle(RenderStyle& style, const Element*) const
{
// A summary of the rules for checkbox designed to match WinIE:
// width/height - honored (WinIE actually scales its control for small widths, but lets it overflow for small heights.)
// font-size - not honored (control has no text), but we use it to decide which control size to use.
setRadioSize(style);
// padding - not honored by WinIE, needs to be removed.
style.resetPadding();
// border - honored by WinIE, but looks terrible (just paints in the control box and turns off the Windows XP theme)
// for now, we will not honor it.
style.resetBorder();
style.setBoxShadow(nullptr);
}
void RenderTheme::adjustButtonStyle(RenderStyle& style, const Element*) const
{
// Most platforms will completely honor all CSS, and so we have no need to
// adjust the style at all by default. We will still allow the theme a crack
// at setting up a desired vertical size.
setButtonSize(style);
}
void RenderTheme::adjustInnerSpinButtonStyle(RenderStyle&, const Element*) const
{
}
#endif
void RenderTheme::adjustTextFieldStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustTextAreaStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustMenuListStyle(RenderStyle&, const Element*) const
{
}
#if ENABLE(METER_ELEMENT)
void RenderTheme::adjustMeterStyle(RenderStyle& style, const Element*) const
{
style.setBoxShadow(nullptr);
}
IntSize RenderTheme::meterSizeForBounds(const RenderMeter&, const IntRect& bounds) const
{
return bounds.size();
}
bool RenderTheme::supportsMeter(ControlPart) const
{
return false;
}
bool RenderTheme::paintMeter(const RenderObject&, const PaintInfo&, const IntRect&)
{
return true;
}
#endif // METER_ELEMENT
void RenderTheme::adjustCapsLockIndicatorStyle(RenderStyle&, const Element*) const
{
}
bool RenderTheme::paintCapsLockIndicator(const RenderObject&, const PaintInfo&, const IntRect&)
{
return false;
}
#if ENABLE(ATTACHMENT_ELEMENT)
void RenderTheme::adjustAttachmentStyle(RenderStyle&, const Element*) const
{
}
bool RenderTheme::paintAttachment(const RenderObject&, const PaintInfo&, const IntRect&)
{
return false;
}
#endif
#if ENABLE(INPUT_TYPE_COLOR)
String RenderTheme::colorInputStyleSheet() const
{
ASSERT(RuntimeEnabledFeatures::sharedFeatures().inputTypeColorEnabled());
return "input[type=\"color\"] { -webkit-appearance: color-well; width: 44px; height: 23px; outline: none; } "_s;
}
#endif // ENABLE(INPUT_TYPE_COLOR)
#if ENABLE(DATALIST_ELEMENT)
String RenderTheme::dataListStyleSheet() const
{
ASSERT(RuntimeEnabledFeatures::sharedFeatures().dataListElementEnabled());
return "datalist { display: none; }"_s;
}
void RenderTheme::adjustListButtonStyle(RenderStyle&, const Element*) const
{
}
LayoutUnit RenderTheme::sliderTickSnappingThreshold() const
{
return 0;
}
void RenderTheme::paintSliderTicks(const RenderObject& o, const PaintInfo& paintInfo, const IntRect& rect)
{
if (!is<HTMLInputElement>(o.node()))
return;
auto& input = downcast<HTMLInputElement>(*o.node());
if (!input.list())
return;
auto& dataList = downcast<HTMLDataListElement>(*input.list());
double min = input.minimum();
double max = input.maximum();
ControlPart part = o.style().appearance();
// We don't support ticks on alternate sliders like MediaVolumeSliders.
if (part != SliderHorizontalPart && part != SliderVerticalPart)
return;
bool isHorizontal = part == SliderHorizontalPart;
IntSize thumbSize;
const RenderObject* thumbRenderer = input.sliderThumbElement()->renderer();
if (thumbRenderer) {
const RenderStyle& thumbStyle = thumbRenderer->style();
int thumbWidth = thumbStyle.width().intValue();
int thumbHeight = thumbStyle.height().intValue();
thumbSize.setWidth(isHorizontal ? thumbWidth : thumbHeight);
thumbSize.setHeight(isHorizontal ? thumbHeight : thumbWidth);
}
IntSize tickSize = sliderTickSize();
float zoomFactor = o.style().effectiveZoom();
FloatRect tickRect;
int tickRegionSideMargin = 0;
int tickRegionWidth = 0;
IntRect trackBounds;
RenderObject* trackRenderer = input.sliderTrackElement()->renderer();
// We can ignoring transforms because transform is handled by the graphics context.
if (trackRenderer)
trackBounds = trackRenderer->absoluteBoundingBoxRectIgnoringTransforms();
IntRect sliderBounds = o.absoluteBoundingBoxRectIgnoringTransforms();
// Make position relative to the transformed ancestor element.
trackBounds.setX(trackBounds.x() - sliderBounds.x() + rect.x());
trackBounds.setY(trackBounds.y() - sliderBounds.y() + rect.y());
if (isHorizontal) {
tickRect.setWidth(floor(tickSize.width() * zoomFactor));
tickRect.setHeight(floor(tickSize.height() * zoomFactor));
tickRect.setY(floor(rect.y() + rect.height() / 2.0 + sliderTickOffsetFromTrackCenter() * zoomFactor));
tickRegionSideMargin = trackBounds.x() + (thumbSize.width() - tickSize.width() * zoomFactor) / 2.0;
tickRegionWidth = trackBounds.width() - thumbSize.width();
} else {
tickRect.setWidth(floor(tickSize.height() * zoomFactor));
tickRect.setHeight(floor(tickSize.width() * zoomFactor));
tickRect.setX(floor(rect.x() + rect.width() / 2.0 + sliderTickOffsetFromTrackCenter() * zoomFactor));
tickRegionSideMargin = trackBounds.y() + (thumbSize.width() - tickSize.width() * zoomFactor) / 2.0;
tickRegionWidth = trackBounds.height() - thumbSize.width();
}
Ref<HTMLCollection> options = dataList.options();
GraphicsContextStateSaver stateSaver(paintInfo.context());
paintInfo.context().setFillColor(o.style().visitedDependentColorWithColorFilter(CSSPropertyColor));
for (unsigned i = 0; Node* node = options->item(i); i++) {
ASSERT(is<HTMLOptionElement>(*node));
HTMLOptionElement& optionElement = downcast<HTMLOptionElement>(*node);
String value = optionElement.value();
if (!input.isValidValue(value))
continue;
double parsedValue = parseToDoubleForNumberType(input.sanitizeValue(value));
double tickFraction = (parsedValue - min) / (max - min);
double tickRatio = isHorizontal && o.style().isLeftToRightDirection() ? tickFraction : 1.0 - tickFraction;
double tickPosition = round(tickRegionSideMargin + tickRegionWidth * tickRatio);
if (isHorizontal)
tickRect.setX(tickPosition);
else
tickRect.setY(tickPosition);
paintInfo.context().fillRect(tickRect);
}
}
#endif
Seconds RenderTheme::animationRepeatIntervalForProgressBar(RenderProgress&) const
{
return 0_s;
}
Seconds RenderTheme::animationDurationForProgressBar(RenderProgress&) const
{
return 0_s;
}
void RenderTheme::adjustProgressBarStyle(RenderStyle&, const Element*) const
{
}
IntRect RenderTheme::progressBarRectForBounds(const RenderObject&, const IntRect& bounds) const
{
return bounds;
}
bool RenderTheme::shouldHaveSpinButton(const HTMLInputElement& inputElement) const
{
return inputElement.isSteppable() && !inputElement.isRangeControl();
}
bool RenderTheme::shouldHaveCapsLockIndicator(const HTMLInputElement&) const
{
return false;
}
void RenderTheme::adjustMenuListButtonStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustMediaControlStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSliderTrackStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSliderThumbStyle(RenderStyle& style, const Element* element) const
{
adjustSliderThumbSize(style, element);
}
void RenderTheme::adjustSliderThumbSize(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSearchFieldStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSearchFieldCancelButtonStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSearchFieldDecorationPartStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSearchFieldResultsDecorationPartStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::adjustSearchFieldResultsButtonStyle(RenderStyle&, const Element*) const
{
}
void RenderTheme::purgeCaches()
{
m_colorCacheMap.clear();
}
void RenderTheme::platformColorsDidChange()
{
m_colorCacheMap.clear();
Page::updateStyleForAllPagesAfterGlobalChangeInEnvironment();
}
auto RenderTheme::colorCache(OptionSet<StyleColor::Options> options) const -> ColorCache&
{
auto optionsIgnoringVisitedLink = options;
optionsIgnoringVisitedLink.remove(StyleColor::Options::ForVisitedLink);
return m_colorCacheMap.ensure(optionsIgnoringVisitedLink.toRaw(), [] {
return ColorCache();
}).iterator->value;
}
FontCascadeDescription& RenderTheme::cachedSystemFontDescription(CSSValueID systemFontID) const
{
static NeverDestroyed<FontCascadeDescription> caption;
static NeverDestroyed<FontCascadeDescription> icon;
static NeverDestroyed<FontCascadeDescription> menu;
static NeverDestroyed<FontCascadeDescription> messageBox;
static NeverDestroyed<FontCascadeDescription> smallCaption;
static NeverDestroyed<FontCascadeDescription> statusBar;
static NeverDestroyed<FontCascadeDescription> webkitMiniControl;
static NeverDestroyed<FontCascadeDescription> webkitSmallControl;
static NeverDestroyed<FontCascadeDescription> webkitControl;
static NeverDestroyed<FontCascadeDescription> defaultDescription;
switch (systemFontID) {
case CSSValueCaption:
return caption;
case CSSValueIcon:
return icon;
case CSSValueMenu:
return menu;
case CSSValueMessageBox:
return messageBox;
case CSSValueSmallCaption:
return smallCaption;
case CSSValueStatusBar:
return statusBar;
case CSSValueWebkitMiniControl:
return webkitMiniControl;
case CSSValueWebkitSmallControl:
return webkitSmallControl;
case CSSValueWebkitControl:
return webkitControl;
case CSSValueNone:
return defaultDescription;
default:
ASSERT_NOT_REACHED();
return defaultDescription;
}
}
void RenderTheme::systemFont(CSSValueID systemFontID, FontCascadeDescription& fontDescription) const
{
fontDescription = cachedSystemFontDescription(systemFontID);
if (fontDescription.isAbsoluteSize())
return;
updateCachedSystemFontDescription(systemFontID, fontDescription);
}
Color RenderTheme::systemColor(CSSValueID cssValueId, OptionSet<StyleColor::Options> options) const
{
switch (cssValueId) {
case CSSValueWebkitLink:
return options.contains(StyleColor::Options::ForVisitedLink) ? 0xFF551A8B : 0xFF0000EE;
case CSSValueWebkitActivelink:
return 0xFFFF0000;
case CSSValueActiveborder:
return 0xFFFFFFFF;
case CSSValueActivebuttontext:
return 0xFF000000;
case CSSValueActivecaption:
return 0xFFCCCCCC;
case CSSValueAppworkspace:
return 0xFFFFFFFF;
case CSSValueBackground:
return 0xFF6363CE;
case CSSValueButtonface:
return 0xFFC0C0C0;
case CSSValueButtonhighlight:
return 0xFFDDDDDD;
case CSSValueButtonshadow:
return 0xFF888888;
case CSSValueButtontext:
return 0xFF000000;
case CSSValueCaptiontext:
return 0xFF000000;
case CSSValueGraytext:
return 0xFF808080;
case CSSValueHighlight:
return 0xFFB5D5FF;
case CSSValueHighlighttext:
return 0xFF000000;
case CSSValueInactiveborder:
return 0xFFFFFFFF;
case CSSValueInactivecaption:
return 0xFFFFFFFF;
case CSSValueInactivecaptiontext:
return 0xFF7F7F7F;
case CSSValueInfobackground:
return 0xFFFBFCC5;
case CSSValueInfotext:
return 0xFF000000;
case CSSValueMenu:
return 0xFFC0C0C0;
case CSSValueMenutext:
return 0xFF000000;
case CSSValueScrollbar:
return 0xFFFFFFFF;
case CSSValueText:
return 0xFF000000;
case CSSValueThreeddarkshadow:
return 0xFF666666;
case CSSValueThreedface:
return 0xFFC0C0C0;
case CSSValueThreedhighlight:
return 0xFFDDDDDD;
case CSSValueThreedlightshadow:
return 0xFFC0C0C0;
case CSSValueThreedshadow:
return 0xFF888888;
case CSSValueWindow:
return 0xFFFFFFFF;
case CSSValueWindowframe:
return 0xFFCCCCCC;
case CSSValueWindowtext:
return 0xFF000000;
default:
break;
}
return Color();
}
Color RenderTheme::activeTextSearchHighlightColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.activeTextSearchHighlightColor.isValid())
cache.activeTextSearchHighlightColor = platformActiveTextSearchHighlightColor(options);
return cache.activeTextSearchHighlightColor;
}
Color RenderTheme::inactiveTextSearchHighlightColor(OptionSet<StyleColor::Options> options) const
{
auto& cache = colorCache(options);
if (!cache.inactiveTextSearchHighlightColor.isValid())
cache.inactiveTextSearchHighlightColor = platformInactiveTextSearchHighlightColor(options);
return cache.inactiveTextSearchHighlightColor;
}
Color RenderTheme::platformActiveTextSearchHighlightColor(OptionSet<StyleColor::Options>) const
{
return Color(255, 150, 50); // Orange.
}
Color RenderTheme::platformInactiveTextSearchHighlightColor(OptionSet<StyleColor::Options>) const
{
return Color(255, 255, 0); // Yellow.
}
#if ENABLE(TOUCH_EVENTS)
Color RenderTheme::tapHighlightColor()
{
return singleton().platformTapHighlightColor();
}
#endif
// Value chosen by observation. This can be tweaked.
static const int minColorContrastValue = 1300;
// For transparent or translucent background color, use lightening.
static const float minDisabledColorAlphaValue = 0.5;
Color RenderTheme::disabledTextColor(const Color& textColor, const Color& backgroundColor) const
{
// The explicit check for black is an optimization for the 99% case (black on white).
// This also means that black on black will turn into grey on black when disabled.
Color disabledColor;
if (Color::isBlackColor(textColor) || backgroundColor.alphaAsFloat() < minDisabledColorAlphaValue || differenceSquared(textColor, Color::white) > differenceSquared(backgroundColor, Color::white))
disabledColor = textColor.light();
else
disabledColor = textColor.dark();
// If there's not very much contrast between the disabled color and the background color,
// just leave the text color alone. We don't want to change a good contrast color scheme so that it has really bad contrast.
// If the contrast was already poor, then it doesn't do any good to change it to a different poor contrast color scheme.
if (differenceSquared(disabledColor, backgroundColor) < minColorContrastValue)
return textColor;
return disabledColor;
}
void RenderTheme::setCustomFocusRingColor(const Color& color)
{
customFocusRingColor() = color;
}
Color RenderTheme::focusRingColor(OptionSet<StyleColor::Options> options) const
{
if (customFocusRingColor().isValid())
return customFocusRingColor();
auto& cache = colorCache(options);
if (!cache.systemFocusRingColor.isValid())
cache.systemFocusRingColor = platformFocusRingColor(options);
return cache.systemFocusRingColor;
}
String RenderTheme::fileListDefaultLabel(bool multipleFilesAllowed) const
{
if (multipleFilesAllowed)
return fileButtonNoFilesSelectedLabel();
return fileButtonNoFileSelectedLabel();
}
String RenderTheme::fileListNameForWidth(const FileList* fileList, const FontCascade& font, int width, bool multipleFilesAllowed) const
{
if (width <= 0)
return String();
String string;
if (fileList->isEmpty())
string = fileListDefaultLabel(multipleFilesAllowed);
else if (fileList->length() == 1)
string = fileList->item(0)->name();
else
return StringTruncator::rightTruncate(multipleFileUploadText(fileList->length()), width, font);
return StringTruncator::centerTruncate(string, width, font);
}
#if USE(SYSTEM_PREVIEW)
void RenderTheme::paintSystemPreviewBadge(Image& image, const PaintInfo& paintInfo, const FloatRect& rect)
{
// The default implementation paints a small marker
// in the upper right corner, as long as the image is big enough.
UNUSED_PARAM(image);
auto& context = paintInfo.context();
GraphicsContextStateSaver stateSaver { context };
if (rect.width() < 32 || rect.height() < 32)
return;
auto markerRect = FloatRect {rect.x() + rect.width() - 24, rect.y() + 8, 16, 16 };
auto roundedMarkerRect = FloatRoundedRect { markerRect, FloatRoundedRect::Radii { 8 } };
auto color = Color { 255, 0, 0 };
context.fillRoundedRect(roundedMarkerRect, color);
}
#endif
#if ENABLE(TOUCH_EVENTS)
Color RenderTheme::platformTapHighlightColor() const
{
// This color is expected to be drawn on a semi-transparent overlay,
// making it more transparent than its alpha value indicates.
return Color(0, 0, 0, 102);
}
#endif
} // namespace WebCore