renderthememac.mm

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}

bool RenderThemeMac::paintTextArea(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
    LocalCurrentGraphicsContext localContext(paintInfo.context);
    wkDrawBezeledTextArea(r, isEnabled(o) && !isReadOnlyControl(o));
    return false;
}

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

const int* RenderThemeMac::popupButtonMargins() const
{
    static const int margins[3][4] =
    {
        { 0, 3, 1, 3 },
        { 0, 3, 2, 3 },
        { 0, 1, 0, 1 }
    };
    return margins[[popupButton() controlSize]];
}

const IntSize* RenderThemeMac::popupButtonSizes() const
{
    static const IntSize sizes[3] = { IntSize(0, 21), IntSize(0, 18), IntSize(0, 15) };
    return sizes;
}

const int* RenderThemeMac::popupButtonPadding(NSControlSize size) const
{
    static const int padding[3][4] =
    {
        { 2, 26, 3, 8 },
        { 2, 23, 3, 8 },
        { 2, 22, 3, 10 }
    };
    return padding[size];
}

bool RenderThemeMac::paintMenuList(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
    setPopupButtonCellState(o, r);

    NSPopUpButtonCell* popupButton = this->popupButton();

    float zoomLevel = o->style()->effectiveZoom();
    IntSize size = popupButtonSizes()[[popupButton controlSize]];
    size.setHeight(size.height() * zoomLevel);
    size.setWidth(r.width());

    // Now inflate it to account for the shadow.
    IntRect inflatedRect = r;
    if (r.width() >= minimumMenuListSize(o->style()))
        inflatedRect = inflateRect(inflatedRect, size, popupButtonMargins(), zoomLevel);

    paintInfo.context->save();
    
#ifndef BUILDING_ON_TIGER
    // On Leopard, the cell will draw outside of the given rect, so we have to clip to the rect
    paintInfo.context->clip(inflatedRect);
#endif

    if (zoomLevel != 1.0f) {
        inflatedRect.setWidth(inflatedRect.width() / zoomLevel);
        inflatedRect.setHeight(inflatedRect.height() / zoomLevel);
        paintInfo.context->translate(inflatedRect.x(), inflatedRect.y());
        paintInfo.context->scale(FloatSize(zoomLevel, zoomLevel));
        paintInfo.context->translate(-inflatedRect.x(), -inflatedRect.y());
    }

    [popupButton drawWithFrame:inflatedRect inView:o->view()->frameView()->documentView()];
    [popupButton setControlView:nil];

    paintInfo.context->restore();

    return false;
}

const float baseFontSize = 11.0f;
const float baseArrowHeight = 4.0f;
const float baseArrowWidth = 5.0f;
const float baseSpaceBetweenArrows = 2.0f;
const int arrowPaddingLeft = 6;
const int arrowPaddingRight = 6;
const int paddingBeforeSeparator = 4;
const int baseBorderRadius = 5;
const int styledPopupPaddingLeft = 8;
const int styledPopupPaddingTop = 1;
const int styledPopupPaddingBottom = 2;

static void TopGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
{
    static float dark[4] = { 1.0f, 1.0f, 1.0f, 0.4f };
    static float light[4] = { 1.0f, 1.0f, 1.0f, 0.15f };
    float a = inData[0];
    int i = 0;
    for (i = 0; i < 4; i++)
        outData[i] = (1.0f - a) * dark[i] + a * light[i];
}

static void BottomGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
{
    static float dark[4] = { 1.0f, 1.0f, 1.0f, 0.0f };
    static float light[4] = { 1.0f, 1.0f, 1.0f, 0.3f };
    float a = inData[0];
    int i = 0;
    for (i = 0; i < 4; i++)
        outData[i] = (1.0f - a) * dark[i] + a * light[i];
}

static void MainGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
{
    static float dark[4] = { 0.0f, 0.0f, 0.0f, 0.15f };
    static float light[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
    float a = inData[0];
    int i = 0;
    for (i = 0; i < 4; i++)
        outData[i] = (1.0f - a) * dark[i] + a * light[i];
}

static void TrackGradientInterpolate(void*, const CGFloat* inData, CGFloat* outData)
{
    static float dark[4] = { 0.0f, 0.0f, 0.0f, 0.678f };
    static float light[4] = { 0.0f, 0.0f, 0.0f, 0.13f };
    float a = inData[0];
    int i = 0;
    for (i = 0; i < 4; i++)
        outData[i] = (1.0f - a) * dark[i] + a * light[i];
}

void RenderThemeMac::paintMenuListButtonGradients(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
    CGContextRef context = paintInfo.context->platformContext();

    paintInfo.context->save();

    int radius = o->style()->borderTopLeftRadius().width();

    RetainPtr<CGColorSpaceRef> cspace(AdoptCF, CGColorSpaceCreateDeviceRGB());

    FloatRect topGradient(r.x(), r.y(), r.width(), r.height() / 2.0f);
    struct CGFunctionCallbacks topCallbacks = { 0, TopGradientInterpolate, NULL };
    RetainPtr<CGFunctionRef> topFunction(AdoptCF, CGFunctionCreate(NULL, 1, NULL, 4, NULL, &topCallbacks));
    RetainPtr<CGShadingRef> topShading(AdoptCF, CGShadingCreateAxial(cspace.get(), CGPointMake(topGradient.x(), topGradient.y()), CGPointMake(topGradient.x(), topGradient.bottom()), topFunction.get(), false, false));

    FloatRect bottomGradient(r.x() + radius, r.y() + r.height() / 2.0f, r.width() - 2.0f * radius, r.height() / 2.0f);
    struct CGFunctionCallbacks bottomCallbacks = { 0, BottomGradientInterpolate, NULL };
    RetainPtr<CGFunctionRef> bottomFunction(AdoptCF, CGFunctionCreate(NULL, 1, NULL, 4, NULL, &bottomCallbacks));
    RetainPtr<CGShadingRef> bottomShading(AdoptCF, CGShadingCreateAxial(cspace.get(), CGPointMake(bottomGradient.x(),  bottomGradient.y()), CGPointMake(bottomGradient.x(), bottomGradient.bottom()), bottomFunction.get(), false, false));

    struct CGFunctionCallbacks mainCallbacks = { 0, MainGradientInterpolate, NULL };
    RetainPtr<CGFunctionRef> mainFunction(AdoptCF, CGFunctionCreate(NULL, 1, NULL, 4, NULL, &mainCallbacks));
    RetainPtr<CGShadingRef> mainShading(AdoptCF, CGShadingCreateAxial(cspace.get(), CGPointMake(r.x(),  r.y()), CGPointMake(r.x(), r.bottom()), mainFunction.get(), false, false));

    RetainPtr<CGShadingRef> leftShading(AdoptCF, CGShadingCreateAxial(cspace.get(), CGPointMake(r.x(),  r.y()), CGPointMake(r.x() + radius, r.y()), mainFunction.get(), false, false));

    RetainPtr<CGShadingRef> rightShading(AdoptCF, CGShadingCreateAxial(cspace.get(), CGPointMake(r.right(),  r.y()), CGPointMake(r.right() - radius, r.y()), mainFunction.get(), false, false));
    paintInfo.context->save();
    CGContextClipToRect(context, r);
    paintInfo.context->addRoundedRectClip(r,
        o->style()->borderTopLeftRadius(), o->style()->borderTopRightRadius(),
        o->style()->borderBottomLeftRadius(), o->style()->borderBottomRightRadius());
    CGContextDrawShading(context, mainShading.get());
    paintInfo.context->restore();

    paintInfo.context->save();
    CGContextClipToRect(context, topGradient);
    paintInfo.context->addRoundedRectClip(enclosingIntRect(topGradient),
        o->style()->borderTopLeftRadius(), o->style()->borderTopRightRadius(),
        IntSize(), IntSize());
    CGContextDrawShading(context, topShading.get());
    paintInfo.context->restore();

    paintInfo.context->save();
    CGContextClipToRect(context, bottomGradient);
    paintInfo.context->addRoundedRectClip(enclosingIntRect(bottomGradient),
        IntSize(), IntSize(),
        o->style()->borderBottomLeftRadius(), o->style()->borderBottomRightRadius());
    CGContextDrawShading(context, bottomShading.get());
    paintInfo.context->restore();

    paintInfo.context->save();
    CGContextClipToRect(context, r);
    paintInfo.context->addRoundedRectClip(r,
        o->style()->borderTopLeftRadius(), o->style()->borderTopRightRadius(),
        o->style()->borderBottomLeftRadius(), o->style()->borderBottomRightRadius());
    CGContextDrawShading(context, leftShading.get());
    CGContextDrawShading(context, rightShading.get());
    paintInfo.context->restore();

    paintInfo.context->restore();
}

bool RenderThemeMac::paintMenuListButton(RenderObject* o, const RenderObject::PaintInfo& paintInfo, const IntRect& r)
{
    paintInfo.context->save();

    IntRect bounds = IntRect(r.x() + o->style()->borderLeftWidth(),
                             r.y() + o->style()->borderTopWidth(),
                             r.width() - o->style()->borderLeftWidth() - o->style()->borderRightWidth(),
                             r.height() - o->style()->borderTopWidth() - o->style()->borderBottomWidth());
    // Draw the gradients to give the styled popup menu a button appearance
    paintMenuListButtonGradients(o, paintInfo, bounds);

    // Since we actually know the size of the control here, we restrict the font scale to make sure the arrows will fit vertically in the bounds
    float fontScale = min(o->style()->fontSize() / baseFontSize, bounds.height() / (baseArrowHeight * 2 + baseSpaceBetweenArrows));
    float centerY = bounds.y() + bounds.height() / 2.0f;
    float arrowHeight = baseArrowHeight * fontScale;
    float arrowWidth = baseArrowWidth * fontScale;
    float leftEdge = bounds.right() - arrowPaddingRight * o->style()->effectiveZoom() - arrowWidth;
    float spaceBetweenArrows = baseSpaceBetweenArrows * fontScale;

    if (bounds.width() < arrowWidth + arrowPaddingLeft * o->style()->effectiveZoom())
        return false;
    
    paintInfo.context->setFillColor(o->style()->color());
    paintInfo.context->setStrokeStyle(NoStroke);

    FloatPoint arrow1[3];
    arrow1[0] = FloatPoint(leftEdge, centerY - spaceBetweenArrows / 2.0f);
    arrow1[1] = FloatPoint(leftEdge + arrowWidth, centerY - spaceBetweenArrows / 2.0f);
    arrow1[2] = FloatPoint(leftEdge + arrowWidth / 2.0f, centerY - spaceBetweenArrows / 2.0f - arrowHeight);

    // Draw the top arrow
    paintInfo.context->drawConvexPolygon(3, arrow1, true);

    FloatPoint arrow2[3];
    arrow2[0] = FloatPoint(leftEdge, centerY + spaceBetweenArrows / 2.0f);
    arrow2[1] = FloatPoint(leftEdge + arrowWidth, centerY + spaceBetweenArrows / 2.0f);
    arrow2[2] = FloatPoint(leftEdge + arrowWidth / 2.0f, centerY + spaceBetweenArrows / 2.0f + arrowHeight);

    // Draw the bottom arrow
    paintInfo.context->drawConvexPolygon(3, arrow2, true);

    Color leftSeparatorColor(0, 0, 0, 40);
    Color rightSeparatorColor(255, 255, 255, 40);

    // FIXME: Should the separator thickness and space be scaled up by fontScale?
    int separatorSpace = 2; // Deliberately ignores zoom since it looks nicer if it stays thin.
    int leftEdgeOfSeparator = static_cast<int>(leftEdge - arrowPaddingLeft * o->style()->effectiveZoom()); // FIXME: Round?

    // Draw the separator to the left of the arrows
    paintInfo.context->setStrokeThickness(1.0f); // Deliberately ignores zoom since it looks nicer if it stays thin.
    paintInfo.context->setStrokeStyle(SolidStroke);
    paintInfo.context->setStrokeColor(leftSeparatorColor);
    paintInfo.context->drawLine(IntPoint(leftEdgeOfSeparator, bounds.y()),
                                IntPoint(leftEdgeOfSeparator, bounds.bottom()));

    paintInfo.context->setStrokeColor(rightSeparatorColor);
    paintInfo.context->drawLine(IntPoint(leftEdgeOfSeparator + separatorSpace, bounds.y()),
                                IntPoint(leftEdgeOfSeparator + separatorSpace, bounds.bottom()));

    paintInfo.context->restore();
    return false;
}

static const IntSize* menuListButtonSizes()
{
    static const IntSize sizes[3] = { IntSize(0, 21), IntSize(0, 18), IntSize(0, 15) };
    return sizes;
}

void RenderThemeMac::adjustMenuListStyle(CSSStyleSelector* selector, RenderStyle* style, Element* e) const
{
    NSControlSize controlSize = controlSizeForFont(style);

    style->resetBorder();
    style->resetPadding();
    
    // Height is locked to auto.
    style->setHeight(Length(Auto));

    // White-space is locked to pre
    style->setWhiteSpace(PRE);

    // Set the foreground color to black or gray when we have the aqua look.
    // Cast to RGB32 is to work around a compiler bug.
    bool isEnabled = true;
    if (FormControlElement* formControlElement = toFormControlElement(e))
        isEnabled = formControlElement->isEnabled();

    style->setColor(isEnabled ? static_cast<RGBA32>(Color::black) : Color::darkGray);

    // Set the button's vertical size.
    setSizeFromFont(style, menuListButtonSizes());

    // Our font is locked to the appropriate system font size for the control.  To clarify, we first use the CSS-specified font to figure out
    // a reasonable control size, but once that control size is determined, we throw that font away and use the appropriate
    // system font for the control size instead.
    setFontFromControlSize(selector, style, controlSize);

    style->setBoxShadow(0);
}

int RenderThemeMac::popupInternalPaddingLeft(RenderStyle* style) const
{
    if (style->appearance() == MenulistPart)
        return popupButtonPadding(controlSizeForFont(style))[leftPadding] * style->effectiveZoom();
    if (style->appearance() == MenulistButtonPart)
        return styledPopupPaddingLeft * style->effectiveZoom();
    return 0;
}

int RenderThemeMac::popupInternalPaddingRight(RenderStyle* style) const
{
    if (style->appearance() == MenulistPart)
        return popupButtonPadding(controlSizeForFont(style))[rightPadding] * style->effectiveZoom();
    if (style->appearance() == MenulistButtonPart) {
        float fontScale = style->fontSize() / baseFontSize;
        float arrowWidth = baseArrowWidth * fontScale;
        return static_cast<int>(ceilf(arrowWidth + (arrowPaddingLeft + arrowPaddingRight + paddingBeforeSeparator) * style->effectiveZoom()));
    }
    return 0;
}

int RenderThemeMac::popupInternalPaddingTop(RenderStyle* style) const
{
    if (style->appearance() == MenulistPart)
        return popupButtonPadding(controlSizeForFont(style))[topPadding] * style->effectiveZoom();
    if (style->appearance() == MenulistButtonPart)
        return styledPopupPaddingTop * style->effectiveZoom();
    return 0;
}

int RenderThemeMac::popupInternalPaddingBottom(RenderStyle* style) const
{
    if (style->appearance() == MenulistPart)
        return popupButtonPadding(controlSizeForFont(style))[bottomPadding] * style->effectiveZoom();
    if (style->appearance() == MenulistButtonPart)
        return styledPopupPaddingBottom * style->effectiveZoom();
    return 0;
}

void RenderThemeMac::adjustMenuListButtonStyle(CSSStyleSelector*, RenderStyle* style, Element*) const
{