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|
/*
* This file is part of the WebKit project.
*
* Copyright (C) 2006 Apple Computer, Inc.
* Copyright (C) 2008, 2009 Google, Inc.
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include "config.h"
#include "RenderThemeChromiumWin.h"
#include <windows.h>
#include <uxtheme.h>
#include <vssym32.h>
#include "ChromiumBridge.h"
#include "CSSStyleSheet.h"
#include "CSSValueKeywords.h"
#include "Document.h"
#include "FontSelector.h"
#include "FontUtilsChromiumWin.h"
#include "GraphicsContext.h"
#include "RenderBox.h"
#include "RenderSlider.h"
#include "ScrollbarTheme.h"
#include "SkiaUtils.h"
#include "TransparencyWin.h"
#include "UserAgentStyleSheets.h"
#include "WindowsVersion.h"
// FIXME: This dependency should eventually be removed.
#include <skia/ext/skia_utils_win.h>
#define SIZEOF_STRUCT_WITH_SPECIFIED_LAST_MEMBER(structName, member) \
offsetof(structName, member) + \
(sizeof static_cast<structName*>(0)->member)
#define NONCLIENTMETRICS_SIZE_PRE_VISTA \
SIZEOF_STRUCT_WITH_SPECIFIED_LAST_MEMBER(NONCLIENTMETRICS, lfMessageFont)
namespace WebCore {
namespace {
bool canvasHasMultipleLayers(const SkCanvas* canvas)
{
SkCanvas::LayerIter iter(const_cast<SkCanvas*>(canvas), false);
iter.next(); // There is always at least one layer.
return !iter.done(); // There is > 1 layer if the the iterator can stil advance.
}
class ThemePainter : public TransparencyWin {
public:
ThemePainter(GraphicsContext* context, const IntRect& r)
{
TransformMode transformMode = getTransformMode(context->getCTM());
init(context, getLayerMode(context, transformMode), transformMode, r);
}
~ThemePainter()
{
composite();
}
private:
static LayerMode getLayerMode(GraphicsContext* context, TransformMode transformMode)
{
if (context->platformContext()->isDrawingToImageBuffer()) // Might have transparent background.
return WhiteLayer;
else if (canvasHasMultipleLayers(context->platformContext()->canvas())) // Needs antialiasing help.
return OpaqueCompositeLayer;
else // Nothing interesting.
return transformMode == KeepTransform ? NoLayer : OpaqueCompositeLayer;
}
static TransformMode getTransformMode(const TransformationMatrix& matrix)
{
if (matrix.b() != 0 || matrix.c() != 0) // Skew.
return Untransform;
else if (matrix.a() != 1.0 || matrix.d() != 1.0) // Scale.
return ScaleTransform;
else // Nothing interesting.
return KeepTransform;
}
};
} // namespace
static void getNonClientMetrics(NONCLIENTMETRICS* metrics) {
static UINT size = WebCore::isVistaOrNewer() ?
sizeof(NONCLIENTMETRICS) : NONCLIENTMETRICS_SIZE_PRE_VISTA;
metrics->cbSize = size;
bool success = !!SystemParametersInfo(SPI_GETNONCLIENTMETRICS, size, metrics, 0);
ASSERT(success);
}
enum PaddingType {
TopPadding,
RightPadding,
BottomPadding,
LeftPadding
};
static const int styledMenuListInternalPadding[4] = { 1, 4, 1, 4 };
// The default variable-width font size. We use this as the default font
// size for the "system font", and as a base size (which we then shrink) for
// form control fonts.
static float defaultFontSize = 16.0;
static FontDescription smallSystemFont;
static FontDescription menuFont;
static FontDescription labelFont;
bool RenderThemeChromiumWin::m_findInPageMode = false;
// Internal static helper functions. We don't put them in an anonymous
// namespace so they have easier access to the WebCore namespace.
static bool supportsFocus(ControlPart appearance)
{
switch (appearance) {
case PushButtonPart:
case ButtonPart:
case DefaultButtonPart:
case SearchFieldPart:
case TextFieldPart:
case TextAreaPart:
return true;
}
return false;
}
static void setFixedPadding(RenderStyle* style, const int padding[4])
{
style->setPaddingLeft(Length(padding[LeftPadding], Fixed));
style->setPaddingRight(Length(padding[RightPadding], Fixed));
style->setPaddingTop(Length(padding[TopPadding], Fixed));
style->setPaddingBottom(Length(padding[BottomPadding], Fixed));
}
// Return the height of system font |font| in pixels. We use this size by
// default for some non-form-control elements.
static float systemFontSize(const LOGFONT& font)
{
float size = -font.lfHeight;
if (size < 0) {
HFONT hFont = CreateFontIndirect(&font);
if (hFont) {
HDC hdc = GetDC(0); // What about printing? Is this the right DC?
if (hdc) {
HGDIOBJ hObject = SelectObject(hdc, hFont);
TEXTMETRIC tm;
GetTextMetrics(hdc, &tm);
SelectObject(hdc, hObject);
ReleaseDC(0, hdc);
size = tm.tmAscent;
}
DeleteObject(hFont);
}
}
// The "codepage 936" bit here is from Gecko; apparently this helps make
// fonts more legible in Simplified Chinese where the default font size is
// too small.
//
// FIXME: http://b/1119883 Since this is only used for "small caption",
// "menu", and "status bar" objects, I'm not sure how much this even
// matters. Plus the Gecko patch went in back in 2002, and maybe this
// isn't even relevant anymore. We should investigate whether this should
// be removed, or perhaps broadened to be "any CJK locale".
//
return ((size < 12.0f) && (GetACP() == 936)) ? 12.0f : size;
}
// We aim to match IE here.
// -IE uses a font based on the encoding as the default font for form controls.
// -Gecko uses MS Shell Dlg (actually calls GetStockObject(DEFAULT_GUI_FONT),
// which returns MS Shell Dlg)
// -Safari uses Lucida Grande.
//
// FIXME: The only case where we know we don't match IE is for ANSI encodings.
// IE uses MS Shell Dlg there, which we render incorrectly at certain pixel
// sizes (e.g. 15px). So, for now we just use Arial.
static wchar_t* defaultGUIFont(Document* document)
{
UScriptCode dominantScript = document->dominantScript();
const wchar_t* family = NULL;
// FIXME: Special-casing of Latin/Greeek/Cyrillic should go away once
// GetFontFamilyForScript is enhanced to support GenericFamilyType for
// real. For now, we make sure that we use Arial to match IE for those
// scripts.
if (dominantScript != USCRIPT_LATIN &&
dominantScript != USCRIPT_CYRILLIC &&
dominantScript != USCRIPT_GREEK &&
dominantScript != USCRIPT_INVALID_CODE) {
family = getFontFamilyForScript(dominantScript, FontDescription::NoFamily);
if (family)
return const_cast<wchar_t*>(family);
}
return L"Arial";
}
// Converts |points| to pixels. One point is 1/72 of an inch.
static float pointsToPixels(float points)
{
static float pixelsPerInch = 0.0f;
if (!pixelsPerInch) {
HDC hdc = GetDC(0); // What about printing? Is this the right DC?
if (hdc) { // Can this ever actually be NULL?
pixelsPerInch = GetDeviceCaps(hdc, LOGPIXELSY);
ReleaseDC(0, hdc);
} else {
pixelsPerInch = 96.0f;
}
}
static const float pointsPerInch = 72.0f;
return points / pointsPerInch * pixelsPerInch;
}
static void setSizeIfAuto(RenderStyle* style, const IntSize& size)
{
if (style->width().isIntrinsicOrAuto())
style->setWidth(Length(size.width(), Fixed));
if (style->height().isAuto())
style->setHeight(Length(size.height(), Fixed));
}
static double querySystemBlinkInterval(double defaultInterval)
{
UINT blinkTime = GetCaretBlinkTime();
if (blinkTime == 0)
return defaultInterval;
if (blinkTime == INFINITE)
return 0;
return blinkTime / 1000.0;
}
// Implement WebCore::theme() for getting the global RenderTheme.
RenderTheme* theme()
{
static RenderThemeChromiumWin winTheme;
return &winTheme;
}
String RenderThemeChromiumWin::extraDefaultStyleSheet()
{
return String(themeChromiumWinUserAgentStyleSheet, sizeof(themeChromiumWinUserAgentStyleSheet));
}
String RenderThemeChromiumWin::extraQuirksStyleSheet()
{
return String(themeWinQuirksUserAgentStyleSheet, sizeof(themeWinQuirksUserAgentStyleSheet));
}
bool RenderThemeChromiumWin::supportsFocusRing(const RenderStyle* style) const
{
// Let webkit draw one of its halo rings around any focused element,
// except push buttons. For buttons we use the windows PBS_DEFAULTED
// styling to give it a blue border.
return style->appearance() == ButtonPart
|| style->appearance() == PushButtonPart;
}
Color RenderThemeChromiumWin::platformActiveSelectionBackgroundColor() const
{
if (ChromiumBridge::layoutTestMode())
return Color("#0000FF"); // Royal blue.
if (m_findInPageMode)
return Color(255, 150, 50, 200); // Orange.
COLORREF color = GetSysColor(COLOR_HIGHLIGHT);
return Color(GetRValue(color), GetGValue(color), GetBValue(color), 255);
}
Color RenderThemeChromiumWin::platformInactiveSelectionBackgroundColor() const
{
if (ChromiumBridge::layoutTestMode())
return Color("#999999"); // Medium gray.
if (m_findInPageMode)
return Color(255, 150, 50, 200); // Orange.
COLORREF color = GetSysColor(COLOR_GRAYTEXT);
return Color(GetRValue(color), GetGValue(color), GetBValue(color), 255);
}
Color RenderThemeChromiumWin::platformActiveSelectionForegroundColor() const
{
if (ChromiumBridge::layoutTestMode())
return Color("#FFFFCC"); // Pale yellow.
COLORREF color = GetSysColor(COLOR_HIGHLIGHTTEXT);
return Color(GetRValue(color), GetGValue(color), GetBValue(color), 255);
}
Color RenderThemeChromiumWin::platformInactiveSelectionForegroundColor() const
{
return Color::white;
}
Color RenderThemeChromiumWin::platformTextSearchHighlightColor() const
{
return Color(255, 255, 150);
}
double RenderThemeChromiumWin::caretBlinkInterval() const
{
// Disable the blinking caret in layout test mode, as it introduces
// a race condition for the pixel tests. http://b/1198440
if (ChromiumBridge::layoutTestMode())
return 0;
// This involves a system call, so we cache the result.
static double blinkInterval = querySystemBlinkInterval(RenderTheme::caretBlinkInterval());
return blinkInterval;
}
void RenderThemeChromiumWin::systemFont(int propId, Document* document, FontDescription& fontDescription) const
{
// This logic owes much to RenderThemeSafari.cpp.
FontDescription* cachedDesc = NULL;
wchar_t* faceName = 0;
float fontSize = 0;
switch (propId) {
case CSSValueSmallCaption:
cachedDesc = &smallSystemFont;
if (!smallSystemFont.isAbsoluteSize()) {
NONCLIENTMETRICS metrics;
getNonClientMetrics(&metrics);
faceName = metrics.lfSmCaptionFont.lfFaceName;
fontSize = systemFontSize(metrics.lfSmCaptionFont);
}
break;
case CSSValueMenu:
cachedDesc = &menuFont;
if (!menuFont.isAbsoluteSize()) {
NONCLIENTMETRICS metrics;
getNonClientMetrics(&metrics);
faceName = metrics.lfMenuFont.lfFaceName;
fontSize = systemFontSize(metrics.lfMenuFont);
}
break;
case CSSValueStatusBar:
cachedDesc = &labelFont;
if (!labelFont.isAbsoluteSize()) {
NONCLIENTMETRICS metrics;
getNonClientMetrics(&metrics);
faceName = metrics.lfStatusFont.lfFaceName;
fontSize = systemFontSize(metrics.lfStatusFont);
}
break;
case CSSValueWebkitMiniControl:
case CSSValueWebkitSmallControl:
case CSSValueWebkitControl:
faceName = defaultGUIFont(document);
// Why 2 points smaller? Because that's what Gecko does.
fontSize = defaultFontSize - pointsToPixels(2);
break;
default:
faceName = defaultGUIFont(document);
fontSize = defaultFontSize;
break;
}
if (!cachedDesc)
cachedDesc = &fontDescription;
if (fontSize) {
ASSERT(faceName);
cachedDesc->firstFamily().setFamily(AtomicString(faceName,
wcslen(faceName)));
cachedDesc->setIsAbsoluteSize(true);
cachedDesc->setGenericFamily(FontDescription::NoFamily);
cachedDesc->setSpecifiedSize(fontSize);
cachedDesc->setWeight(FontWeightNormal);
cachedDesc->setItalic(false);
}
fontDescription = *cachedDesc;
}
int RenderThemeChromiumWin::minimumMenuListSize(RenderStyle* style) const
{
return 0;
}
void RenderThemeChromiumWin::adjustSliderThumbSize(RenderObject* o) const
{
// These sizes match what WinXP draws for various menus.
const int sliderThumbAlongAxis = 11;
const int sliderThumbAcrossAxis = 21;
if (o->style()->appearance() == SliderThumbHorizontalPart || o->style()->appearance() == MediaSliderThumbPart) {
o->style()->setWidth(Length(sliderThumbAlongAxis, Fixed));
o->style()->setHeight(Length(sliderThumbAcrossAxis, Fixed));
} else if (o->style()->appearance() == SliderThumbVerticalPart) {
o->style()->setWidth(Length(sliderThumbAcrossAxis, Fixed));
o->style()->setHeight(Length(sliderThumbAlongAxis, Fixed));
}
}
void RenderThemeChromiumWin::setCheckboxSize(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;
// FIXME: A hard-coded size of 13 is used. This is wrong but necessary
// for now. It matches Firefox. At different DPI settings on Windows,
// querying the theme gives you a larger size that accounts for the higher
// DPI. Until our entire engine honors a DPI setting other than 96, we
// can't rely on the theme's metrics.
const IntSize size(13, 13);
setSizeIfAuto(style, size);
}
void RenderThemeChromiumWin::setRadioSize(RenderStyle* style) const
{
// Use same sizing for radio box as checkbox.
setCheckboxSize(style);
}
bool RenderThemeChromiumWin::paintButton(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{
const ThemeData& themeData = getThemeData(o);
WebCore::ThemePainter painter(i.context, r);
ChromiumBridge::paintButton(painter.context(),
themeData.m_part,
themeData.m_state,
themeData.m_classicState,
painter.drawRect());
return false;
}
bool RenderThemeChromiumWin::paintTextField(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{
return paintTextFieldInternal(o, i, r, true);
}
bool RenderThemeChromiumWin::paintSliderTrack(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{
const ThemeData& themeData = getThemeData(o);
WebCore::ThemePainter painter(i.context, r);
ChromiumBridge::paintTrackbar(painter.context(),
themeData.m_part,
themeData.m_state,
themeData.m_classicState,
painter.drawRect());
return false;
}
bool RenderThemeChromiumWin::paintSearchField(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{
return paintTextField(o, i, r);
}
void RenderThemeChromiumWin::adjustMenuListStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
// Height is locked to auto on all browsers.
style->setLineHeight(RenderStyle::initialLineHeight());
}
// Used to paint unstyled menulists (i.e. with the default border)
bool RenderThemeChromiumWin::paintMenuList(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{
if (!o->isBox())
return false;
const RenderBox* box = toRenderBox(o);
int borderRight = box->borderRight();
int borderLeft = box->borderLeft();
int borderTop = box->borderTop();
int borderBottom = box->borderBottom();
// If all the borders are 0, then tell skia not to paint the border on the
// textfield. FIXME: http://b/1210017 Figure out how to get Windows to not
// draw individual borders and then pass that to skia so we can avoid
// drawing any borders that are set to 0. For non-zero borders, we draw the
// border, but webkit just draws over it.
bool drawEdges = !(borderRight == 0 && borderLeft == 0 && borderTop == 0 && borderBottom == 0);
paintTextFieldInternal(o, i, r, drawEdges);
// Take padding and border into account. If the MenuList is smaller than
// the size of a button, make sure to shrink it appropriately and not put
// its x position to the left of the menulist.
const int buttonWidth = GetSystemMetrics(SM_CXVSCROLL);
int spacingLeft = borderLeft + box->paddingLeft();
int spacingRight = borderRight + box->paddingRight();
int spacingTop = borderTop + box->paddingTop();
int spacingBottom = borderBottom + box->paddingBottom();
int buttonX;
if (r.right() - r.x() < buttonWidth)
buttonX = r.x();
else
buttonX = o->style()->direction() == LTR ? r.right() - spacingRight - buttonWidth : r.x() + spacingLeft;
// Compute the rectangle of the button in the destination image.
IntRect rect(buttonX,
r.y() + spacingTop,
std::min(buttonWidth, r.right() - r.x()),
r.height() - (spacingTop + spacingBottom));
// Get the correct theme data for a textfield and paint the menu.
WebCore::ThemePainter painter(i.context, rect);
ChromiumBridge::paintMenuList(painter.context(),
CP_DROPDOWNBUTTON,
determineState(o),
determineClassicState(o),
painter.drawRect());
return false;
}
void RenderThemeChromiumWin::adjustMenuListButtonStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
adjustMenuListStyle(selector, style, e);
}
// Used to paint styled menulists (i.e. with a non-default border)
bool RenderThemeChromiumWin::paintMenuListButton(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{
return paintMenuList(o, i, r);
}
int RenderThemeChromiumWin::popupInternalPaddingLeft(RenderStyle* style) const
{
return menuListInternalPadding(style, LeftPadding);
}
int RenderThemeChromiumWin::popupInternalPaddingRight(RenderStyle* style) const
{
return menuListInternalPadding(style, RightPadding);
}
int RenderThemeChromiumWin::popupInternalPaddingTop(RenderStyle* style) const
{
return menuListInternalPadding(style, TopPadding);
}
int RenderThemeChromiumWin::popupInternalPaddingBottom(RenderStyle* style) const
{
return menuListInternalPadding(style, BottomPadding);
}
int RenderThemeChromiumWin::buttonInternalPaddingLeft() const
{
return 3;
}
int RenderThemeChromiumWin::buttonInternalPaddingRight() const
{
return 3;
}
int RenderThemeChromiumWin::buttonInternalPaddingTop() const
{
return 1;
}
int RenderThemeChromiumWin::buttonInternalPaddingBottom() const
{
return 1;
}
// static
void RenderThemeChromiumWin::setDefaultFontSize(int fontSize) {
defaultFontSize = static_cast<float>(fontSize);
// Reset cached fonts.
smallSystemFont = menuFont = labelFont = FontDescription();
}
unsigned RenderThemeChromiumWin::determineState(RenderObject* o)
{
unsigned result = TS_NORMAL;
ControlPart appearance = o->style()->appearance();
if (!isEnabled(o))
result = TS_DISABLED;
else if (isReadOnlyControl(o) && (TextFieldPart == appearance || TextAreaPart == appearance || SearchFieldPart == appearance))
result = ETS_READONLY; // Readonly is supported on textfields.
else if (isPressed(o)) // Active overrides hover and focused.
result = TS_PRESSED;
else if (supportsFocus(appearance) && isFocused(o))
result = ETS_FOCUSED;
else if (isHovered(o))
result = TS_HOT;
if (isChecked(o))
result += 4; // 4 unchecked states, 4 checked states.
return result;
}
unsigned RenderThemeChromiumWin::determineSliderThumbState(RenderObject* o)
{
unsigned result = TUS_NORMAL;
if (!isEnabled(o->parent()))
result = TUS_DISABLED;
else if (supportsFocus(o->style()->appearance()) && isFocused(o->parent()))
result = TUS_FOCUSED;
else if (static_cast<RenderSlider*>(o->parent())->inDragMode())
result = TUS_PRESSED;
else if (isHovered(o))
result = TUS_HOT;
return result;
}
unsigned RenderThemeChromiumWin::determineClassicState(RenderObject* o)
{
unsigned result = 0;
if (!isEnabled(o))
result = DFCS_INACTIVE;
else if (isPressed(o)) // Active supersedes hover
result = DFCS_PUSHED;
else if (isHovered(o))
result = DFCS_HOT;
if (isChecked(o))
result |= DFCS_CHECKED;
return result;
}
ThemeData RenderThemeChromiumWin::getThemeData(RenderObject* o)
{
ThemeData result;
switch (o->style()->appearance()) {
case CheckboxPart:
result.m_part = BP_CHECKBOX;
result.m_state = determineState(o);
result.m_classicState = DFCS_BUTTONCHECK;
break;
case RadioPart:
result.m_part = BP_RADIOBUTTON;
result.m_state = determineState(o);
result.m_classicState = DFCS_BUTTONRADIO;
break;
case PushButtonPart:
case ButtonPart:
result.m_part = BP_PUSHBUTTON;
result.m_state = determineState(o);
result.m_classicState = DFCS_BUTTONPUSH;
break;
case SliderHorizontalPart:
result.m_part = TKP_TRACK;
result.m_state = TRS_NORMAL;
break;
case SliderVerticalPart:
result.m_part = TKP_TRACKVERT;
result.m_state = TRVS_NORMAL;
break;
case SliderThumbHorizontalPart:
result.m_part = TKP_THUMBBOTTOM;
result.m_state = determineSliderThumbState(o);
break;
case SliderThumbVerticalPart:
result.m_part = TKP_THUMBVERT;
result.m_state = determineSliderThumbState(o);
break;
case ListboxPart:
case MenulistPart:
case SearchFieldPart:
case TextFieldPart:
case TextAreaPart:
result.m_part = EP_EDITTEXT;
result.m_state = determineState(o);
break;
}
result.m_classicState |= determineClassicState(o);
return result;
}
bool RenderThemeChromiumWin::paintTextFieldInternal(RenderObject* o,
const RenderObject::PaintInfo& i,
const IntRect& r,
bool drawEdges)
{
// Nasty hack to make us not paint the border on text fields with a
// border-radius. Webkit paints elements with border-radius for us.
// FIXME: Get rid of this if-check once we can properly clip rounded
// borders: http://b/1112604 and http://b/1108635
// FIXME: make sure we do the right thing if css background-clip is set.
if (o->style()->hasBorderRadius())
return false;
const ThemeData& themeData = getThemeData(o);
WebCore::ThemePainter painter(i.context, r);
ChromiumBridge::paintTextField(painter.context(),
themeData.m_part,
themeData.m_state,
themeData.m_classicState,
painter.drawRect(),
o->style()->backgroundColor(),
true,
drawEdges);
return false;
}
int RenderThemeChromiumWin::menuListInternalPadding(RenderStyle* style, int paddingType) const
{
// This internal padding is in addition to the user-supplied padding.
// Matches the FF behavior.
int padding = styledMenuListInternalPadding[paddingType];
// Reserve the space for right arrow here. The rest of the padding is set
// by adjustMenuListStyle, since PopupMenuChromium.cpp uses the padding
// from RenderMenuList to lay out the individual items in the popup. If
// the MenuList actually has appearance "NoAppearance", then that means we
// don't draw a button, so don't reserve space for it.
const int barType = style->direction() == LTR ? RightPadding : LeftPadding;
if (paddingType == barType && style->appearance() != NoControlPart)
padding += ScrollbarTheme::nativeTheme()->scrollbarThickness();
return padding;
}
// static
void RenderThemeChromiumWin::setFindInPageMode(bool enable) {
if (m_findInPageMode == enable)
return;
m_findInPageMode = enable;
theme()->platformColorsDidChange();
}
} // namespace WebCore
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