Source/core/rendering/RenderTheme.cpp

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This source file includes following definitions.
getWebFallbackThemeState
m_platformTheme
adjustStyle
paint
paintBorderOnly
paintDecorations
extraDefaultStyleSheet
formatMediaControlsTime
formatMediaControlsCurrentTime
activeSelectionBackgroundColor
inactiveSelectionBackgroundColor
activeSelectionForegroundColor
inactiveSelectionForegroundColor
activeListBoxSelectionBackgroundColor
inactiveListBoxSelectionBackgroundColor
activeListBoxSelectionForegroundColor
inactiveListBoxSelectionForegroundColor
platformActiveSelectionBackgroundColor
platformActiveSelectionForegroundColor
platformInactiveSelectionBackgroundColor
platformInactiveSelectionForegroundColor
platformActiveListBoxSelectionBackgroundColor
platformActiveListBoxSelectionForegroundColor
platformInactiveListBoxSelectionBackgroundColor
platformInactiveListBoxSelectionForegroundColor
baselinePosition
isControlContainer
isBackgroundOrBorderStyled
isControlStyled
adjustRepaintRect
shouldDrawDefaultFocusRing
supportsFocusRing
stateChanged
controlStatesForRenderer
isActive
isChecked
isIndeterminate
isEnabled
isFocused
isPressed
isSpinUpButtonPartPressed
isReadOnlyControl
isHovered
isSpinUpButtonPartHovered
adjustCheckboxStyle
adjustRadioStyle
adjustButtonStyle
adjustInnerSpinButtonStyle
adjustMenuListStyle
adjustInputFieldSpeechButtonStyle
paintInputFieldSpeechButton
meterSizeForBounds
supportsMeter
paintMeter
paintSliderTicks
animationRepeatIntervalForProgressBar
animationDurationForProgressBar
shouldHaveSpinButton
adjustMenuListButtonStyle
adjustSliderThumbStyle
adjustSliderThumbSize
adjustSearchFieldStyle
adjustSearchFieldCancelButtonStyle
adjustSearchFieldDecorationStyle
adjustSearchFieldResultsDecorationStyle
platformColorsDidChange
systemColor
platformActiveTextSearchHighlightColor
platformInactiveTextSearchHighlightColor
tapHighlightColor
setCustomFocusRingColor
focusRingColor
fileListNameForWidth
shouldOpenPickerWithF4Key
supportsCalendarPicker
shouldUseFallbackTheme
adjustStyleUsingFallbackTheme
paintUsingFallbackTheme
setSizeIfAuto
paintCheckboxUsingFallbackTheme
adjustCheckboxStyleUsingFallbackTheme
paintRadioUsingFallbackTheme
adjustRadioStyleUsingFallbackTheme
/**
 * This file is part of the theme implementation for form controls in WebCore.
 *
 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Computer, 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "core/rendering/RenderTheme.h"

#include "CSSValueKeywords.h"
#include "HTMLNames.h"
#include "InputTypeNames.h"
#include "RuntimeEnabledFeatures.h"
#include "core/dom/Document.h"
#include "core/dom/shadow/ElementShadow.h"
#include "core/editing/FrameSelection.h"
#include "core/fileapi/FileList.h"
#include "core/frame/LocalFrame.h"
#include "core/html/HTMLCollection.h"
#include "core/html/HTMLDataListElement.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/HTMLMeterElement.h"
#include "core/html/HTMLOptionElement.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/html/shadow/MediaControlElements.h"
#include "core/html/shadow/ShadowElementNames.h"
#include "core/html/shadow/SpinButtonElement.h"
#include "core/html/shadow/TextControlInnerElements.h"
#include "core/page/FocusController.h"
#include "core/page/Page.h"
#include "core/frame/Settings.h"
#include "core/rendering/PaintInfo.h"
#include "core/rendering/RenderMeter.h"
#include "core/rendering/RenderView.h"
#include "core/rendering/style/RenderStyle.h"
#include "platform/FileMetadata.h"
#include "platform/FloatConversion.h"
#include "platform/fonts/FontSelector.h"
#include "platform/graphics/GraphicsContextStateSaver.h"
#include "platform/text/PlatformLocale.h"
#include "platform/text/StringTruncator.h"
#include "public/platform/Platform.h"
#include "public/platform/WebFallbackThemeEngine.h"
#include "public/platform/WebRect.h"
#include "wtf/text/StringBuilder.h"

#if ENABLE(INPUT_SPEECH)
#include "core/rendering/RenderInputSpeech.h"
#endif

// The methods in this file are shared by all themes on every platform.

namespace WebCore {

using namespace HTMLNames;

static blink::WebFallbackThemeEngine::State getWebFallbackThemeState(const RenderTheme* theme, const RenderObject* o)
{
    if (!theme->isEnabled(o))
        return blink::WebFallbackThemeEngine::StateDisabled;
    if (theme->isPressed(o))
        return blink::WebFallbackThemeEngine::StatePressed;
    if (theme->isHovered(o))
        return blink::WebFallbackThemeEngine::StateHover;

    return blink::WebFallbackThemeEngine::StateNormal;
}

RenderTheme::RenderTheme()
    : m_hasCustomFocusRingColor(false)
#if USE(NEW_THEME)
    , m_platformTheme(platformTheme())
#endif
{
}

void RenderTheme::adjustStyle(RenderStyle* style, Element* e, const CachedUAStyle& uaStyle)
{
    // Force inline and table display styles to be inline-block (except for table- which is block)
    ControlPart part = style->appearance();
    if (style->display() == INLINE || style->display() == INLINE_TABLE || style->display() == TABLE_ROW_GROUP
        || style->display() == TABLE_HEADER_GROUP || style->display() == TABLE_FOOTER_GROUP
        || style->display() == TABLE_ROW || style->display() == TABLE_COLUMN_GROUP || style->display() == TABLE_COLUMN
        || style->display() == TABLE_CELL || style->display() == TABLE_CAPTION)
        style->setDisplay(INLINE_BLOCK);
    else if (style->display() == LIST_ITEM || style->display() == TABLE)
        style->setDisplay(BLOCK);

    if (uaStyle.hasAppearance && isControlStyled(style, uaStyle)) {
        if (part == MenulistPart) {
            style->setAppearance(MenulistButtonPart);
            part = MenulistButtonPart;
        } else
            style->setAppearance(NoControlPart);
    }

    if (!style->hasAppearance())
        return;

    if (shouldUseFallbackTheme(style)) {
        adjustStyleUsingFallbackTheme(style, e);
        return;
    }

#if USE(NEW_THEME)
    switch (part) {
    case CheckboxPart:
    case InnerSpinButtonPart:
    case RadioPart:
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart: {
        // Border
        LengthBox borderBox(style->borderTopWidth(), style->borderRightWidth(), style->borderBottomWidth(), style->borderLeftWidth());
        borderBox = m_platformTheme->controlBorder(part, style->font().fontDescription(), 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 = m_platformTheme->controlPadding(part, style->font().fontDescription(), style->paddingBox(), style->effectiveZoom());
        if (paddingBox != style->paddingBox())
            style->setPaddingBox(paddingBox);

        // Whitespace
        if (m_platformTheme->controlRequiresPreWhiteSpace(part))
            style->setWhiteSpace(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 = m_platformTheme->controlSize(part, style->font().fontDescription(), LengthSize(style->width(), style->height()), style->effectiveZoom());
        if (controlSize.width() != style->width())
            style->setWidth(controlSize.width());
        if (controlSize.height() != style->height())
            style->setHeight(controlSize.height());

        // Min-Width / Min-Height
        LengthSize minControlSize = m_platformTheme->minimumControlSize(part, style->font().fontDescription(), style->effectiveZoom());
        if (minControlSize.width() != style->minWidth())
            style->setMinWidth(minControlSize.width());
        if (minControlSize.height() != style->minHeight())
            style->setMinHeight(minControlSize.height());

        // Font
        FontDescription controlFont = m_platformTheme->controlFont(part, style->font().fontDescription(), style->effectiveZoom());
        if (controlFont != style->font().fontDescription()) {
            // Reset our line-height
            style->setLineHeight(RenderStyle::initialLineHeight());

            // Now update our font.
            if (style->setFontDescription(controlFont))
                style->font().update(nullptr);
        }
    }
    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, e);
    case RadioPart:
        return adjustRadioStyle(style, e);
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart:
        return adjustButtonStyle(style, e);
    case InnerSpinButtonPart:
        return adjustInnerSpinButtonStyle(style, e);
#endif
    case MenulistPart:
        return adjustMenuListStyle(style, e);
    case MenulistButtonPart:
        return adjustMenuListButtonStyle(style, e);
    case SliderThumbHorizontalPart:
    case SliderThumbVerticalPart:
        return adjustSliderThumbStyle(style, e);
    case SearchFieldPart:
        return adjustSearchFieldStyle(style, e);
    case SearchFieldCancelButtonPart:
        return adjustSearchFieldCancelButtonStyle(style, e);
    case SearchFieldDecorationPart:
        return adjustSearchFieldDecorationStyle(style, e);
    case SearchFieldResultsDecorationPart:
        return adjustSearchFieldResultsDecorationStyle(style, e);
#if ENABLE(INPUT_SPEECH)
    case InputSpeechButtonPart:
        return adjustInputFieldSpeechButtonStyle(style, e);
#endif
    default:
        break;
    }
}

bool RenderTheme::paint(RenderObject* o, const PaintInfo& paintInfo, const IntRect& r)
{
    // 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->updatingControlTints()) {
        if (controlSupportsTints(o))
            o->repaint();
        return false;
    }
    if (paintInfo.context->paintingDisabled())
        return false;

    ControlPart part = o->style()->appearance();

    if (shouldUseFallbackTheme(o->style()))
        return paintUsingFallbackTheme(o, paintInfo, r);

#if USE(NEW_THEME)
    switch (part) {
    case CheckboxPart:
    case RadioPart:
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart:
    case InnerSpinButtonPart:
        m_platformTheme->paint(part, controlStatesForRenderer(o), const_cast<GraphicsContext*>(paintInfo.context), r, o->style()->effectiveZoom(), o->view()->frameView());
        return false;
    default:
        break;
    }
#endif

    // Call the appropriate paint method based off the appearance value.
    switch (part) {
#if !USE(NEW_THEME)
    case CheckboxPart:
        return paintCheckbox(o, paintInfo, r);
    case RadioPart:
        return paintRadio(o, paintInfo, r);
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart:
        return paintButton(o, paintInfo, r);
    case InnerSpinButtonPart:
        return paintInnerSpinButton(o, paintInfo, r);
#endif
    case MenulistPart:
        return paintMenuList(o, paintInfo, r);
    case MeterPart:
    case RelevancyLevelIndicatorPart:
    case ContinuousCapacityLevelIndicatorPart:
    case DiscreteCapacityLevelIndicatorPart:
    case RatingLevelIndicatorPart:
        return paintMeter(o, paintInfo, r);
    case ProgressBarPart:
        return paintProgressBar(o, paintInfo, r);
    case SliderHorizontalPart:
    case SliderVerticalPart:
        return paintSliderTrack(o, paintInfo, r);
    case SliderThumbHorizontalPart:
    case SliderThumbVerticalPart:
        return paintSliderThumb(o, paintInfo, r);
    case MediaEnterFullscreenButtonPart:
    case MediaExitFullscreenButtonPart:
        return paintMediaFullscreenButton(o, paintInfo, r);
    case MediaPlayButtonPart:
        return paintMediaPlayButton(o, paintInfo, r);
    case MediaOverlayPlayButtonPart:
        return paintMediaOverlayPlayButton(o, paintInfo, r);
    case MediaMuteButtonPart:
        return paintMediaMuteButton(o, paintInfo, r);
    case MediaToggleClosedCaptionsButtonPart:
        return paintMediaToggleClosedCaptionsButton(o, paintInfo, r);
    case MediaSliderPart:
        return paintMediaSliderTrack(o, paintInfo, r);
    case MediaSliderThumbPart:
        return paintMediaSliderThumb(o, paintInfo, r);
    case MediaVolumeSliderContainerPart:
        return paintMediaVolumeSliderContainer(o, paintInfo, r);
    case MediaVolumeSliderPart:
        return paintMediaVolumeSliderTrack(o, paintInfo, r);
    case MediaVolumeSliderThumbPart:
        return paintMediaVolumeSliderThumb(o, paintInfo, r);
    case MediaFullScreenVolumeSliderPart:
        return paintMediaFullScreenVolumeSliderTrack(o, paintInfo, r);
    case MediaFullScreenVolumeSliderThumbPart:
        return paintMediaFullScreenVolumeSliderThumb(o, paintInfo, r);
    case MediaTimeRemainingPart:
        return paintMediaTimeRemaining(o, paintInfo, r);
    case MediaCurrentTimePart:
        return paintMediaCurrentTime(o, paintInfo, r);
    case MediaControlsBackgroundPart:
        return paintMediaControlsBackground(o, paintInfo, r);
    case MenulistButtonPart:
    case TextFieldPart:
    case TextAreaPart:
    case ListboxPart:
        return true;
    case SearchFieldPart:
        return paintSearchField(o, paintInfo, r);
    case SearchFieldCancelButtonPart:
        return paintSearchFieldCancelButton(o, paintInfo, r);
    case SearchFieldDecorationPart:
        return paintSearchFieldDecoration(o, paintInfo, r);
    case SearchFieldResultsDecorationPart:
        return paintSearchFieldResultsDecoration(o, paintInfo, r);
#if ENABLE(INPUT_SPEECH)
    case InputSpeechButtonPart:
        return paintInputFieldSpeechButton(o, paintInfo, r);
#endif
    default:
        break;
    }

    return true; // We don't support the appearance, so let the normal background/border paint.
}

bool RenderTheme::paintBorderOnly(RenderObject* o, const PaintInfo& paintInfo, const IntRect& r)
{
    if (paintInfo.context->paintingDisabled())
        return false;

    // Call the appropriate paint method based off the appearance value.
    switch (o->style()->appearance()) {
    case TextFieldPart:
        return paintTextField(o, paintInfo, r);
    case ListboxPart:
    case TextAreaPart:
        return paintTextArea(o, paintInfo, r);
    case MenulistButtonPart:
    case SearchFieldPart:
        return true;
    case CheckboxPart:
    case RadioPart:
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart:
    case MenulistPart:
    case MeterPart:
    case RelevancyLevelIndicatorPart:
    case ContinuousCapacityLevelIndicatorPart:
    case DiscreteCapacityLevelIndicatorPart:
    case RatingLevelIndicatorPart:
    case ProgressBarPart:
    case SliderHorizontalPart:
    case SliderVerticalPart:
    case SliderThumbHorizontalPart:
    case SliderThumbVerticalPart:
    case SearchFieldCancelButtonPart:
    case SearchFieldDecorationPart:
    case SearchFieldResultsDecorationPart:
#if ENABLE(INPUT_SPEECH)
    case InputSpeechButtonPart:
#endif
    default:
        break;
    }

    return false;
}

bool RenderTheme::paintDecorations(RenderObject* o, const PaintInfo& paintInfo, const IntRect& r)
{
    if (paintInfo.context->paintingDisabled())
        return false;

    // Call the appropriate paint method based off the appearance value.
    switch (o->style()->appearance()) {
    case MenulistButtonPart:
        return paintMenuListButton(o, paintInfo, r);
    case TextFieldPart:
    case TextAreaPart:
    case ListboxPart:
    case CheckboxPart:
    case RadioPart:
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart:
    case MenulistPart:
    case MeterPart:
    case RelevancyLevelIndicatorPart:
    case ContinuousCapacityLevelIndicatorPart:
    case DiscreteCapacityLevelIndicatorPart:
    case RatingLevelIndicatorPart:
    case ProgressBarPart:
    case SliderHorizontalPart:
    case SliderVerticalPart:
    case SliderThumbHorizontalPart:
    case SliderThumbVerticalPart:
    case SearchFieldPart:
    case SearchFieldCancelButtonPart:
    case SearchFieldDecorationPart:
    case SearchFieldResultsDecorationPart:
#if ENABLE(INPUT_SPEECH)
    case InputSpeechButtonPart:
#endif
    default:
        break;
    }

    return false;
}

String RenderTheme::extraDefaultStyleSheet()
{
    StringBuilder runtimeCSS;
    if (RuntimeEnabledFeatures::dialogElementEnabled()) {
        runtimeCSS.appendLiteral("dialog:not([open]) { display: none; }");
        runtimeCSS.appendLiteral("dialog { position: absolute; left: 0; right: 0; width: -webkit-fit-content; height: -webkit-fit-content; margin: auto; border: solid; padding: 1em; background: white; color: black;}");
        runtimeCSS.appendLiteral("dialog::backdrop { position: fixed; top: 0; right: 0; bottom: 0; left: 0; background: rgba(0,0,0,0.1); }");
    }

    return runtimeCSS.toString();
}

String RenderTheme::formatMediaControlsTime(float time) const
{
    if (!std::isfinite(time))
        time = 0;
    int seconds = (int)fabsf(time);
    int hours = seconds / (60 * 60);
    int minutes = (seconds / 60) % 60;
    seconds %= 60;
    if (hours) {
        if (hours > 9)
            return String::format("%s%02d:%02d:%02d", (time < 0 ? "-" : ""), hours, minutes, seconds);

        return String::format("%s%01d:%02d:%02d", (time < 0 ? "-" : ""), hours, minutes, seconds);
    }

    return String::format("%s%02d:%02d", (time < 0 ? "-" : ""), minutes, seconds);
}

String RenderTheme::formatMediaControlsCurrentTime(float currentTime, float /*duration*/) const
{
    return formatMediaControlsTime(currentTime);
}

Color RenderTheme::activeSelectionBackgroundColor() const
{
    return platformActiveSelectionBackgroundColor().blendWithWhite();
}

Color RenderTheme::inactiveSelectionBackgroundColor() const
{
    return platformInactiveSelectionBackgroundColor().blendWithWhite();
}

Color RenderTheme::activeSelectionForegroundColor() const
{
    return platformActiveSelectionForegroundColor();
}

Color RenderTheme::inactiveSelectionForegroundColor() const
{
    return platformInactiveSelectionForegroundColor();
}

Color RenderTheme::activeListBoxSelectionBackgroundColor() const
{
    return platformActiveListBoxSelectionBackgroundColor();
}

Color RenderTheme::inactiveListBoxSelectionBackgroundColor() const
{
    return platformInactiveListBoxSelectionBackgroundColor();
}

Color RenderTheme::activeListBoxSelectionForegroundColor() const
{
    return platformActiveListBoxSelectionForegroundColor();
}

Color RenderTheme::inactiveListBoxSelectionForegroundColor() const
{
    return platformInactiveListBoxSelectionForegroundColor();
}

Color RenderTheme::platformActiveSelectionBackgroundColor() const
{
    // Use a blue color by default if the platform theme doesn't define anything.
    return Color(0, 0, 255);
}

Color RenderTheme::platformActiveSelectionForegroundColor() const
{
    // Use a white color by default if the platform theme doesn't define anything.
    return Color::white;
}

Color RenderTheme::platformInactiveSelectionBackgroundColor() 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() const
{
    // Use a black color by default.
    return Color::black;
}

Color RenderTheme::platformActiveListBoxSelectionBackgroundColor() const
{
    return platformActiveSelectionBackgroundColor();
}

Color RenderTheme::platformActiveListBoxSelectionForegroundColor() const
{
    return platformActiveSelectionForegroundColor();
}

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

Color RenderTheme::platformInactiveListBoxSelectionForegroundColor() const
{
    return platformInactiveSelectionForegroundColor();
}

int RenderTheme::baselinePosition(const RenderObject* o) const
{
    if (!o->isBox())
        return 0;

    const RenderBox* box = toRenderBox(o);

#if USE(NEW_THEME)
    return box->height() + box->marginTop() + m_platformTheme->baselinePositionAdjustment(o->style()->appearance()) * o->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;
}

static bool isBackgroundOrBorderStyled(const RenderStyle& style, const CachedUAStyle& uaStyle)
{
    // Code below excludes the background-repeat from comparison by resetting it
    FillLayer backgroundCopy = uaStyle.backgroundLayers;
    FillLayer backgroundLayersCopy = *style.backgroundLayers();
    backgroundCopy.setRepeatX(NoRepeatFill);
    backgroundCopy.setRepeatY(NoRepeatFill);
    backgroundLayersCopy.setRepeatX(NoRepeatFill);
    backgroundLayersCopy.setRepeatY(NoRepeatFill);
    // Test the style to see if the UA border and background match.
    return style.border() != uaStyle.border
        || backgroundLayersCopy != backgroundCopy
        || style.visitedDependentColor(CSSPropertyBackgroundColor) != uaStyle.backgroundColor;
}

bool RenderTheme::isControlStyled(const RenderStyle* style, const CachedUAStyle& uaStyle) const
{
    switch (style->appearance()) {
    case PushButtonPart:
    case SquareButtonPart:
    case ButtonPart:
    case ProgressBarPart:
    case MeterPart:
    case RelevancyLevelIndicatorPart:
    case ContinuousCapacityLevelIndicatorPart:
    case DiscreteCapacityLevelIndicatorPart:
    case RatingLevelIndicatorPart:
        return isBackgroundOrBorderStyled(*style, uaStyle);

    case ListboxPart:
    case MenulistPart:
    case SearchFieldPart:
    case TextAreaPart:
    case TextFieldPart:
        return isBackgroundOrBorderStyled(*style, uaStyle) || style->boxShadow();

    case SliderHorizontalPart:
    case SliderVerticalPart:
        return style->boxShadow();

    default:
        return false;
    }
}

void RenderTheme::adjustRepaintRect(const RenderObject* o, IntRect& r)
{
#if USE(NEW_THEME)
    m_platformTheme->inflateControlPaintRect(o->style()->appearance(), controlStatesForRenderer(o), r, o->style()->effectiveZoom());
#endif
}

bool RenderTheme::shouldDrawDefaultFocusRing(RenderObject* renderer) const
{
    if (supportsFocusRing(renderer->style()))
        return false;
    if (!renderer->style()->hasAppearance())
        return true;
    Node* node = renderer->node();
    if (!node)
        return true;
    // We can't use RenderTheme::isFocused because outline:auto might be
    // specified to non-:focus rulesets.
    if (node->focused() && !node->shouldHaveFocusAppearance())
        return false;
    return true;
}

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(RenderObject* o, ControlState state) const
{
    // Default implementation assumes the controls don't respond to changes in :hover state
    if (state == HoverState && !supportsHover(o->style()))
        return false;

    // Assume pressed state is only responded to if the control is enabled.
    if (state == PressedState && !isEnabled(o))
        return false;

    // Repaint the control.
    o->repaint();
    return true;
}

ControlStates RenderTheme::controlStatesForRenderer(const RenderObject* o) const
{
    ControlStates result = 0;
    if (isHovered(o)) {
        result |= HoverState;
        if (isSpinUpButtonPartHovered(o))
            result |= SpinUpState;
    }
    if (isPressed(o)) {
        result |= PressedState;
        if (isSpinUpButtonPartPressed(o))
            result |= SpinUpState;
    }
    if (isFocused(o) && o->style()->outlineStyleIsAuto())
        result |= FocusState;
    if (isEnabled(o))
        result |= EnabledState;
    if (isChecked(o))
        result |= CheckedState;
    if (isReadOnlyControl(o))
        result |= ReadOnlyState;
    if (!isActive(o))
        result |= WindowInactiveState;
    if (isIndeterminate(o))
        result |= IndeterminateState;
    return result;
}

bool RenderTheme::isActive(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node)
        return false;

    Page* page = node->document().page();
    if (!page)
        return false;

    return page->focusController().isActive();
}

bool RenderTheme::isChecked(const RenderObject* o) const
{
    if (!isHTMLInputElement(o->node()))
        return false;
    return toHTMLInputElement(o->node())->shouldAppearChecked();
}

bool RenderTheme::isIndeterminate(const RenderObject* o) const
{
    if (!isHTMLInputElement(o->node()))
        return false;
    return toHTMLInputElement(o->node())->shouldAppearIndeterminate();
}

bool RenderTheme::isEnabled(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node || !node->isElementNode())
        return true;
    return !toElement(node)->isDisabledFormControl();
}

bool RenderTheme::isFocused(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node)
        return false;

    node = node->focusDelegate();
    Document& document = node->document();
    LocalFrame* frame = document.frame();
    return node == document.focusedElement() && node->shouldHaveFocusAppearance() && frame && frame->selection().isFocusedAndActive();
}

bool RenderTheme::isPressed(const RenderObject* o) const
{
    if (!o->node())
        return false;
    return o->node()->active();
}

bool RenderTheme::isSpinUpButtonPartPressed(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node || !node->active() || !node->isElementNode()
        || !toElement(node)->isSpinButtonElement())
        return false;
    SpinButtonElement* element = toSpinButtonElement(node);
    return element->upDownState() == SpinButtonElement::Up;
}

bool RenderTheme::isReadOnlyControl(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node || !node->isElementNode())
        return false;
    return toElement(node)->matchesReadOnlyPseudoClass();
}

bool RenderTheme::isHovered(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node)
        return false;
    if (!node->isElementNode() || !toElement(node)->isSpinButtonElement())
        return node->hovered();
    SpinButtonElement* element = toSpinButtonElement(node);
    return element->hovered() && element->upDownState() != SpinButtonElement::Indeterminate;
}

bool RenderTheme::isSpinUpButtonPartHovered(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node || !node->isElementNode() || !toElement(node)->isSpinButtonElement())
        return false;
    SpinButtonElement* element = toSpinButtonElement(node);
    return element->upDownState() == SpinButtonElement::Up;
}

#if !USE(NEW_THEME)

void RenderTheme::adjustCheckboxStyle(RenderStyle* style, 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();
}

void RenderTheme::adjustRadioStyle(RenderStyle* style, 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();
}

void RenderTheme::adjustButtonStyle(RenderStyle* style, Element*) const
{
}

void RenderTheme::adjustInnerSpinButtonStyle(RenderStyle*, Element*) const
{
}
#endif

void RenderTheme::adjustMenuListStyle(RenderStyle*, Element*) const
{
}

#if ENABLE(INPUT_SPEECH)
void RenderTheme::adjustInputFieldSpeechButtonStyle(RenderStyle* style, Element* element) const
{
    RenderInputSpeech::adjustInputFieldSpeechButtonStyle(style, element);
}

bool RenderTheme::paintInputFieldSpeechButton(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
{
    return RenderInputSpeech::paintInputFieldSpeechButton(object, paintInfo, rect);
}
#endif

IntSize RenderTheme::meterSizeForBounds(const RenderMeter*, const IntRect& bounds) const
{
    return bounds.size();
}

bool RenderTheme::supportsMeter(ControlPart) const
{
    return false;
}

bool RenderTheme::paintMeter(RenderObject*, const PaintInfo&, const IntRect&)
{
    return true;
}

void RenderTheme::paintSliderTicks(RenderObject* o, const PaintInfo& paintInfo, const IntRect& rect)
{
    Node* node = o->node();
    if (!isHTMLInputElement(node))
        return;

    HTMLInputElement* input = toHTMLInputElement(node);
    if (!input->isRangeControl())
        return;

    HTMLDataListElement* dataList = input->dataList();
    if (!dataList)
        return;

    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;
    RenderObject* thumbRenderer = input->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb())->renderer();
    if (thumbRenderer) {
        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->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderTrack())->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();
    }
    RefPtr<HTMLCollection> options = dataList->options();
    GraphicsContextStateSaver stateSaver(*paintInfo.context);
    paintInfo.context->setFillColor(o->resolveColor(CSSPropertyColor));
    for (unsigned i = 0; Element* element = options->item(i); i++) {
        ASSERT(isHTMLOptionElement(*element));
        HTMLOptionElement& optionElement = toHTMLOptionElement(*element);
        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);
    }
}

double RenderTheme::animationRepeatIntervalForProgressBar(RenderProgress*) const
{
    return 0;
}

double RenderTheme::animationDurationForProgressBar(RenderProgress*) const
{
    return 0;
}

bool RenderTheme::shouldHaveSpinButton(HTMLInputElement* inputElement) const
{
    return inputElement->isSteppable() && !inputElement->isRangeControl();
}

void RenderTheme::adjustMenuListButtonStyle(RenderStyle*, Element*) const
{
}

void RenderTheme::adjustSliderThumbStyle(RenderStyle* style, Element* element) const
{
    adjustSliderThumbSize(style, element);
}

void RenderTheme::adjustSliderThumbSize(RenderStyle*, Element*) const
{
}

void RenderTheme::adjustSearchFieldStyle(RenderStyle*, Element*) const
{
}

void RenderTheme::adjustSearchFieldCancelButtonStyle(RenderStyle*, Element*) const
{
}

void RenderTheme::adjustSearchFieldDecorationStyle(RenderStyle*, Element*) const
{
}

void RenderTheme::adjustSearchFieldResultsDecorationStyle(RenderStyle*, Element*) const
{
}

void RenderTheme::platformColorsDidChange()
{
    Page::scheduleForcedStyleRecalcForAllPages();
}

Color RenderTheme::systemColor(CSSValueID cssValueId) const
{
    switch (cssValueId) {
    case CSSValueActiveborder:
        return 0xFFFFFFFF;
    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;
    case CSSValueInternalActiveListBoxSelection:
        return activeListBoxSelectionBackgroundColor();
        break;
    case CSSValueInternalActiveListBoxSelectionText:
        return activeListBoxSelectionForegroundColor();
        break;
    case CSSValueInternalInactiveListBoxSelection:
        return inactiveListBoxSelectionBackgroundColor();
        break;
    case CSSValueInternalInactiveListBoxSelectionText:
        return inactiveListBoxSelectionForegroundColor();
        break;
    default:
        break;
    }
    ASSERT_NOT_REACHED();
    return Color();
}

Color RenderTheme::platformActiveTextSearchHighlightColor() const
{
    return Color(255, 150, 50); // Orange.
}

Color RenderTheme::platformInactiveTextSearchHighlightColor() const
{
    return Color(255, 255, 0); // Yellow.
}

Color RenderTheme::tapHighlightColor()
{
    return theme().platformTapHighlightColor();
}

void RenderTheme::setCustomFocusRingColor(const Color& c)
{
    m_customFocusRingColor = c;
    m_hasCustomFocusRingColor = true;
}

Color RenderTheme::focusRingColor() const
{
    return m_hasCustomFocusRingColor ? m_customFocusRingColor : theme().platformFocusRingColor();
}

String RenderTheme::fileListNameForWidth(Locale& locale, const FileList* fileList, const Font& font, int width) const
{
    if (width <= 0)
        return String();

    String string;
    if (fileList->isEmpty()) {
        string = locale.queryString(blink::WebLocalizedString::FileButtonNoFileSelectedLabel);
    } else if (fileList->length() == 1) {
        string = fileList->item(0)->name();
    } else {
        // FIXME: Localization of fileList->length().
        return StringTruncator::rightTruncate(locale.queryString(blink::WebLocalizedString::MultipleFileUploadText, String::number(fileList->length())), width, font, StringTruncator::EnableRoundingHacks);
    }

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

bool RenderTheme::shouldOpenPickerWithF4Key() const
{
    return false;
}

#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
bool RenderTheme::supportsCalendarPicker(const AtomicString& type) const
{
    return type == InputTypeNames::date
        || type == InputTypeNames::datetime
        || type == InputTypeNames::datetime_local
        || type == InputTypeNames::month
        || type == InputTypeNames::week;
}
#endif

bool RenderTheme::shouldUseFallbackTheme(RenderStyle*) const
{
    return false;
}

void RenderTheme::adjustStyleUsingFallbackTheme(RenderStyle* style, Element* e)
{
    ControlPart part = style->appearance();
    switch (part) {
    case CheckboxPart:
        return adjustCheckboxStyleUsingFallbackTheme(style, e);
    case RadioPart:
        return adjustRadioStyleUsingFallbackTheme(style, e);
    default:
        break;
    }
}

bool RenderTheme::paintUsingFallbackTheme(RenderObject* o, const PaintInfo& i, const IntRect& r)
{
    ControlPart part = o->style()->appearance();
    switch (part) {
    case CheckboxPart:
        return paintCheckboxUsingFallbackTheme(o, i, r);
    case RadioPart:
        return paintRadioUsingFallbackTheme(o, i, r);
    default:
        break;
    }
    return true;
}

// static
void RenderTheme::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));
}

bool RenderTheme::paintCheckboxUsingFallbackTheme(RenderObject* o, const PaintInfo& i, const IntRect& r)
{
    blink::WebFallbackThemeEngine::ExtraParams extraParams;
    blink::WebCanvas* canvas = i.context->canvas();
    extraParams.button.checked = isChecked(o);
    extraParams.button.indeterminate = isIndeterminate(o);

    float zoomLevel = o->style()->effectiveZoom();
    GraphicsContextStateSaver stateSaver(*i.context);
    IntRect unzoomedRect = r;
    if (zoomLevel != 1) {
        unzoomedRect.setWidth(unzoomedRect.width() / zoomLevel);
        unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
        i.context->translate(unzoomedRect.x(), unzoomedRect.y());
        i.context->scale(FloatSize(zoomLevel, zoomLevel));
        i.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
    }

    blink::Platform::current()->fallbackThemeEngine()->paint(canvas, blink::WebFallbackThemeEngine::PartCheckbox, getWebFallbackThemeState(this, o), blink::WebRect(unzoomedRect), &extraParams);
    return false;
}

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

    IntSize size = blink::Platform::current()->fallbackThemeEngine()->getSize(blink::WebFallbackThemeEngine::PartCheckbox);
    float zoomLevel = style->effectiveZoom();
    size.setWidth(size.width() * zoomLevel);
    size.setHeight(size.height() * zoomLevel);
    setSizeIfAuto(style, size);

    // 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();
}

bool RenderTheme::paintRadioUsingFallbackTheme(RenderObject* o, const PaintInfo& i, const IntRect& r)
{
    blink::WebFallbackThemeEngine::ExtraParams extraParams;
    blink::WebCanvas* canvas = i.context->canvas();
    extraParams.button.checked = isChecked(o);
    extraParams.button.indeterminate = isIndeterminate(o);

    float zoomLevel = o->style()->effectiveZoom();
    GraphicsContextStateSaver stateSaver(*i.context);
    IntRect unzoomedRect = r;
    if (zoomLevel != 1) {
        unzoomedRect.setWidth(unzoomedRect.width() / zoomLevel);
        unzoomedRect.setHeight(unzoomedRect.height() / zoomLevel);
        i.context->translate(unzoomedRect.x(), unzoomedRect.y());
        i.context->scale(FloatSize(zoomLevel, zoomLevel));
        i.context->translate(-unzoomedRect.x(), -unzoomedRect.y());
    }

    blink::Platform::current()->fallbackThemeEngine()->paint(canvas, blink::WebFallbackThemeEngine::PartRadio, getWebFallbackThemeState(this, o), blink::WebRect(unzoomedRect), &extraParams);
    return false;
}

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

    IntSize size = blink::Platform::current()->fallbackThemeEngine()->getSize(blink::WebFallbackThemeEngine::PartRadio);
    float zoomLevel = style->effectiveZoom();
    size.setWidth(size.width() * zoomLevel);
    size.setHeight(size.height() * zoomLevel);
    setSizeIfAuto(style, size);

    // 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();
}

} // namespace WebCore
/* [<][>][^][v][top][bottom][index][help] */
root/Source/core/rendering/RenderTheme.cpp

DEFINITIONS
