renderthemewin.cpp

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            break;
        case CSSValueWebkitSmallControl:
        case CSSValueWebkitMiniControl: // Just map to small.
        case CSSValueWebkitControl: // Just map to small.
            if (!controlFont.isAbsoluteSize()) {
                HGDIOBJ hGDI = ::GetStockObject(DEFAULT_GUI_FONT);
                if (hGDI) {
                    LOGFONT logFont;
                    if (::GetObject(hGDI, sizeof(logFont), &logFont) > 0)
                        fillFontDescription(controlFont, logFont, defaultControlFontPixelSize);
                }
            }
            fontDescription = controlFont;
            break;
        default: { // Everything else uses the stock GUI font.
            if (!systemFont.isAbsoluteSize()) {
                HGDIOBJ hGDI = ::GetStockObject(DEFAULT_GUI_FONT);
                if (hGDI) {
                    LOGFONT logFont;
                    if (::GetObject(hGDI, sizeof(logFont), &logFont) > 0)
                        fillFontDescription(systemFont, logFont);
                }
            }
            fontDescription = systemFont;
        }
    }
}

bool RenderThemeWin::supportsFocus(ControlPart appearance) const
{
    switch (appearance) {
        case PushButtonPart:
        case ButtonPart:
        case DefaultButtonPart:
            return true;
        default:
            return false;
    }
}

bool RenderThemeWin::supportsFocusRing(const RenderStyle* style) const
{
    return supportsFocus(style->appearance());
}

unsigned RenderThemeWin::determineClassicState(RenderObject* o)
{
    unsigned state = 0;
    switch (o->style()->appearance()) {
        case PushButtonPart:
        case ButtonPart:
        case DefaultButtonPart:
            state = DFCS_BUTTONPUSH;
            if (!isEnabled(o))
                state |= DFCS_INACTIVE;
            else if (isPressed(o))
                state |= DFCS_PUSHED;
            break;
        case RadioPart:
        case CheckboxPart:
            state = (o->style()->appearance() == RadioPart) ? DFCS_BUTTONRADIO : DFCS_BUTTONCHECK;
            if (isChecked(o))
                state |= DFCS_CHECKED;
            if (!isEnabled(o))
                state |= DFCS_INACTIVE;
            else if (isPressed(o))
                state |= DFCS_PUSHED;
            break;
        case MenulistPart:
            state = DFCS_SCROLLCOMBOBOX;
            if (!isEnabled(o))
                state |= DFCS_INACTIVE;
            else if (isPressed(o))
                state |= DFCS_PUSHED;
        default:
            break;
    }
    return state;
}

unsigned RenderThemeWin::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 = TFS_READONLY; // Readonly is supported on textfields.
    else if (isPressed(o)) // Active overrides hover and focused.
        result = TS_ACTIVE;
    else if (supportsFocus(appearance) && isFocused(o))
        result = TS_FOCUSED;
    else if (isHovered(o))
        result = TS_HOVER;
    if (isChecked(o))
        result += 4; // 4 unchecked states, 4 checked states.
    return result;
}

unsigned RenderThemeWin::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 RenderThemeWin::determineButtonState(RenderObject* o)
{
    unsigned result = PBS_NORMAL;
    if (!isEnabled(o))
        result = PBS_DISABLED;
    else if (isPressed(o))
        result = PBS_PRESSED;
    else if (supportsFocus(o->style()->appearance()) && isFocused(o))
        result = PBS_DEFAULTED;
    else if (isHovered(o))
        result = PBS_HOT;
    else if (isDefault(o))
        result = PBS_DEFAULTED;
    return result;
}

ThemeData RenderThemeWin::getClassicThemeData(RenderObject* o)
{
    ThemeData result;
    switch (o->style()->appearance()) {
        case PushButtonPart:
        case ButtonPart:
        case DefaultButtonPart:
        case CheckboxPart:
        case RadioPart:
            result.m_part = DFC_BUTTON;
            result.m_state = determineClassicState(o);
            break;
        case MenulistPart:
            result.m_part = DFC_SCROLL;
            result.m_state = determineClassicState(o);
            break;
        case SearchFieldPart:
        case TextFieldPart:
        case TextAreaPart:
            result.m_part = TFP_TEXTFIELD;
            result.m_state = determineState(o);
            break;
        case SliderHorizontalPart:
            result.m_part = TKP_TRACK;
            result.m_state = TS_NORMAL;
            break;
        case SliderVerticalPart:
            result.m_part = TKP_TRACKVERT;
            result.m_state = TS_NORMAL;
            break;
        case SliderThumbHorizontalPart:
            result.m_part = TKP_THUMBBOTTOM;
            result.m_state = determineSliderThumbState(o);
            break;
        case SliderThumbVerticalPart:
            result.m_part = TKP_THUMBRIGHT;
            result.m_state = determineSliderThumbState(o);
            break;
        default:
            break;
    }
    return result;
}

ThemeData RenderThemeWin::getThemeData(RenderObject* o)
{
    if (!haveTheme)
        return getClassicThemeData(o);

    ThemeData result;
    switch (o->style()->appearance()) {
        case PushButtonPart:
        case ButtonPart:
        case DefaultButtonPart:
            result.m_part = BP_BUTTON;
            result.m_state = determineButtonState(o);
            break;
        case CheckboxPart:
            result.m_part = BP_CHECKBOX;
            result.m_state = determineState(o);
            break;
        case MenulistPart:
        case MenulistButtonPart:
            result.m_part = CP_DROPDOWNBUTTON;
            result.m_state = determineState(o);
            break;
        case RadioPart:
            result.m_part = BP_RADIO;
            result.m_state = determineState(o);
            break;
        case SearchFieldPart:
        case TextFieldPart:
        case TextAreaPart:
            result.m_part = TFP_TEXTFIELD;
            result.m_state = determineState(o);
            break;
        case SliderHorizontalPart:
            result.m_part = TKP_TRACK;
            result.m_state = TS_NORMAL;
            break;
        case SliderVerticalPart:
            result.m_part = TKP_TRACKVERT;
            result.m_state = TS_NORMAL;
            break;
        case SliderThumbHorizontalPart:
            result.m_part = TKP_THUMBBOTTOM;
            result.m_state = determineSliderThumbState(o);
            break;
        case SliderThumbVerticalPart:
            result.m_part = TKP_THUMBRIGHT;
            result.m_state = determineSliderThumbState(o);
            break;
    }

    return result;
}

static void drawControl(GraphicsContext* context, RenderObject* o, HANDLE theme, const ThemeData& themeData, const IntRect& r)
{
    bool alphaBlend = false;
    if (theme)
        alphaBlend = IsThemeBackgroundPartiallyTransparent(theme, themeData.m_part, themeData.m_state);
    HDC hdc = context->getWindowsContext(r, alphaBlend);
    RECT widgetRect = r;
    if (theme)
        DrawThemeBackground(theme, hdc, themeData.m_part, themeData.m_state, &widgetRect, NULL);
    else {
        if (themeData.m_part == TFP_TEXTFIELD) {
            ::DrawEdge(hdc, &widgetRect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
            if (themeData.m_state == TS_DISABLED || themeData.m_state ==  TFS_READONLY)
                ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_BTNFACE+1));
            else
                ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_WINDOW+1));
        } else if (themeData.m_part == TKP_TRACK || themeData.m_part == TKP_TRACKVERT) {
            ::DrawEdge(hdc, &widgetRect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
            ::FillRect(hdc, &widgetRect, (HBRUSH)GetStockObject(GRAY_BRUSH));
        } else if ((o->style()->appearance() == SliderThumbHorizontalPart ||
                    o->style()->appearance() == SliderThumbVerticalPart) && 
                   (themeData.m_part == TKP_THUMBBOTTOM || themeData.m_part == TKP_THUMBTOP || 
                    themeData.m_part == TKP_THUMBLEFT || themeData.m_part == TKP_THUMBRIGHT)) {
            ::DrawEdge(hdc, &widgetRect, EDGE_RAISED, BF_RECT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
            if (themeData.m_state == TUS_DISABLED) {
                static WORD patternBits[8] = {0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55};
                HBITMAP patternBmp = ::CreateBitmap(8, 8, 1, 1, patternBits);
                if (patternBmp) {
                    HBRUSH brush = (HBRUSH) ::CreatePatternBrush(patternBmp);
                    COLORREF oldForeColor = ::SetTextColor(hdc, ::GetSysColor(COLOR_3DFACE));
                    COLORREF oldBackColor = ::SetBkColor(hdc, ::GetSysColor(COLOR_3DHILIGHT));
                    POINT p;
                    ::GetViewportOrgEx(hdc, &p);
                    ::SetBrushOrgEx(hdc, p.x + widgetRect.left, p.y + widgetRect.top, NULL);
                    HBRUSH oldBrush = (HBRUSH) ::SelectObject(hdc, brush);
                    ::FillRect(hdc, &widgetRect, brush);
                    ::SetTextColor(hdc, oldForeColor);
                    ::SetBkColor(hdc, oldBackColor);
                    ::SelectObject(hdc, oldBrush);
                    ::DeleteObject(brush); 
                } else
                    ::FillRect(hdc, &widgetRect, (HBRUSH)COLOR_3DHILIGHT);
                ::DeleteObject(patternBmp);
            }
        } else {
            // Push buttons, buttons, checkboxes and radios, and the dropdown arrow in menulists.
            if (o->style()->appearance() == DefaultButtonPart) {
                HBRUSH brush = ::GetSysColorBrush(COLOR_3DDKSHADOW);
                ::FrameRect(hdc, &widgetRect, brush);
                ::InflateRect(&widgetRect, -1, -1);
                ::DrawEdge(hdc, &widgetRect, BDR_RAISEDOUTER, BF_RECT | BF_MIDDLE);
            }
            ::DrawFrameControl(hdc, &widgetRect, themeData.m_part, themeData.m_state);
        }
    }
    context->releaseWindowsContext(hdc, r, alphaBlend);
}

bool RenderThemeWin::paintButton(RenderObject* o, const RenderObject::PaintInfo& i, const IntRect& r)
{  
    drawControl(i.context,  o, buttonTheme(), getThemeData(o), r);
    return false;
}

void RenderThemeWin::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.
    if (style->width().isIntrinsicOrAuto())
        style->setWidth(Length(13, Fixed));
    if (style->height().isAuto())