rendertheme.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

}

Color RenderTheme::inactiveListBoxSelectionForegroundColor() const
{
    if (!m_inactiveListBoxSelectionForegroundColor.isValid() && supportsListBoxSelectionForegroundColors())
        m_inactiveListBoxSelectionForegroundColor = platformInactiveListBoxSelectionForegroundColor();
    return m_inactiveListBoxSelectionForegroundColor;
}

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_theme->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;
}

bool RenderTheme::isControlStyled(const RenderStyle* style, const BorderData& border, const FillLayer& background,
                                  const Color& backgroundColor) const
{
    switch (style->appearance()) {
        case PushButtonPart:
        case SquareButtonPart:
        case DefaultButtonPart:
        case ButtonPart:
        case ListboxPart:
        case MenulistPart:
        // FIXME: Uncomment this when making search fields style-able.
        // case SearchFieldPart:
        case TextFieldPart:
        case TextAreaPart:
            // Test the style to see if the UA border and background match.
            return (style->border() != border ||
                    *style->backgroundLayers() != background ||
                    style->backgroundColor() != backgroundColor);
        default:
            return false;
    }
}

void RenderTheme::adjustRepaintRect(const RenderObject* o, IntRect& r)
{
#if USE(NEW_THEME)
    m_theme->inflateControlPaintRect(o->style()->appearance(), controlStatesForRenderer(o), r, o->style()->effectiveZoom());
#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(RenderObject* o, ControlState state) const
{
    // Default implementation assumes the controls dont 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 (isPressed(o))
        result |= PressedState;
    if (isFocused(o) && o->style()->outlineStyleIsAuto())
        result |= FocusState;
    if (isEnabled(o))
        result |= EnabledState;
    if (isChecked(o))
        result |= CheckedState;
    if (isReadOnlyControl(o))
        result |= ReadOnlyState;
    if (isDefault(o))
        result |= DefaultState;
    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;

    Frame* frame = node->document()->frame();
    if (!frame)
        return false;

    Page* page = frame->page();
    if (!page)
        return false;

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

bool RenderTheme::isChecked(const RenderObject* o) const
{
    if (!o->node() || !o->node()->isElementNode())
        return false;

    InputElement* inputElement = toInputElement(static_cast<Element*>(o->node()));
    if (!inputElement)
        return false;

    return inputElement->isChecked();
}

bool RenderTheme::isIndeterminate(const RenderObject* o) const
{
    if (!o->node() || !o->node()->isElementNode())
        return false;

    InputElement* inputElement = toInputElement(static_cast<Element*>(o->node()));
    if (!inputElement)
        return false;

    return inputElement->isIndeterminate();
}

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

    FormControlElement* formControlElement = toFormControlElement(static_cast<Element*>(o->node()));
    if (!formControlElement)
        return true;

    return formControlElement->isEnabled();
}

bool RenderTheme::isFocused(const RenderObject* o) const
{
    Node* node = o->node();
    if (!node)
        return false;
    Document* document = node->document();
    Frame* frame = document->frame();
    return node == document->focusedNode() && frame && frame->selection()->isFocusedAndActive();
}

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

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

    FormControlElement* formControlElement = toFormControlElement(static_cast<Element*>(o->node()));
    if (!formControlElement)
        return false;

    return formControlElement->isReadOnlyControl();
}

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

bool RenderTheme::isDefault(const RenderObject* o) const
{
    if (!o->document())
        return false;

    Settings* settings = o->document()->settings();
    if (!settings || !settings->inApplicationChromeMode())
        return false;
    
    return o->style()->appearance() == DefaultButtonPart;
}

#if !USE(NEW_THEME)

void RenderTheme::adjustCheckboxStyle(CSSStyleSelector*, 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();

    style->setBoxShadow(0);
}

void RenderTheme::adjustRadioStyle(CSSStyleSelector*, 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();

    style->setBoxShadow(0);
}

void RenderTheme::adjustButtonStyle(CSSStyleSelector*, RenderStyle* style, 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);
}

#endif

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

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

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

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

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

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

void RenderTheme::adjustSliderThumbSize(RenderObject*) const
{
}

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

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

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

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

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

void RenderTheme::platformColorsDidChange()
{
    m_activeSelectionForegroundColor = Color();
    m_inactiveSelectionForegroundColor = Color();
    m_activeSelectionBackgroundColor = Color();
    m_inactiveSelectionBackgroundColor = Color();

    m_activeListBoxSelectionForegroundColor = Color();
    m_inactiveListBoxSelectionForegroundColor = Color();
    m_activeListBoxSelectionBackgroundColor = Color();
    m_inactiveListBoxSelectionForegroundColor = Color();
}

Color RenderTheme::systemColor(int 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;
    }
    return Color();
}

Color RenderTheme::platformTextSearchHighlightColor() const
{
    return Color(255, 255, 0);
}

} // namespace WebCore