void RenderScrollbar::paintPart(GraphicsContext* graphicsContext, ScrollbarPart partType, const IntRect& rect)
{
RenderScrollbarPart* partRenderer = m_parts.get(partType);
if (!partRenderer)
return;
partRenderer->paintIntoRect(graphicsContext, x(), y(), rect);
}
void RenderScrollbar::updateScrollbarParts(bool destroy)
{
updateScrollbarPart(ScrollbarBGPart, destroy);
updateScrollbarPart(BackButtonStartPart, destroy);
updateScrollbarPart(ForwardButtonStartPart, destroy);
updateScrollbarPart(BackTrackPart, destroy);
updateScrollbarPart(ThumbPart, destroy);
updateScrollbarPart(ForwardTrackPart, destroy);
updateScrollbarPart(BackButtonEndPart, destroy);
updateScrollbarPart(ForwardButtonEndPart, destroy);
updateScrollbarPart(TrackBGPart, destroy);
if (destroy)
return;
// See if the scrollbar's thickness changed. If so, we need to mark our owning object as needing a layout.
bool isHorizontal = orientation() == HorizontalScrollbar;
int oldThickness = isHorizontal ? height() : width();
int newThickness = 0;
RenderScrollbarPart* part = m_parts.get(ScrollbarBGPart);
if (part) {
part->layout();
newThickness = isHorizontal ? part->height() : part->width();
}
if (newThickness != oldThickness) {
setFrameRect(IntRect(x(), y(), isHorizontal ? width() : newThickness, isHorizontal ? newThickness : height()));
owningRenderer()->setChildNeedsLayout(true);
}
}
IntRect RenderScrollbar::buttonRect(ScrollbarPart partType)
{
RenderScrollbarPart* partRenderer = m_parts.get(partType);
if (!partRenderer)
return IntRect();
partRenderer->layout();
bool isHorizontal = orientation() == HorizontalScrollbar;
IntSize pixelSnappedIntSize = snappedIntRect(partRenderer->frameRect()).size();
if (partType == BackButtonStartPart)
return IntRect(location(), IntSize(isHorizontal ? pixelSnappedIntSize.width() : width(), isHorizontal ? height() : pixelSnappedIntSize.height()));
if (partType == ForwardButtonEndPart)
return IntRect(isHorizontal ? x() + width() - pixelSnappedIntSize.width() : x(), isHorizontal ? y() : y() + height() - pixelSnappedIntSize.height(),
isHorizontal ? pixelSnappedIntSize.width() : width(),
isHorizontal ? height() : pixelSnappedIntSize.height());
if (partType == ForwardButtonStartPart) {
IntRect previousButton = buttonRect(BackButtonStartPart);
return IntRect(isHorizontal ? x() + previousButton.width() : x(),
isHorizontal ? y() : y() + previousButton.height(),
isHorizontal ? pixelSnappedIntSize.width() : width(),
isHorizontal ? height() : pixelSnappedIntSize.height());
}
IntRect followingButton = buttonRect(ForwardButtonEndPart);
return IntRect(isHorizontal ? x() + width() - followingButton.width() - pixelSnappedIntSize.width() : x(),
isHorizontal ? y() : y() + height() - followingButton.height() - pixelSnappedIntSize.height(),
isHorizontal ? pixelSnappedIntSize.width() : width(),
isHorizontal ? height() : pixelSnappedIntSize.height());
}
int RenderScrollbar::minimumThumbLength()
{
RenderScrollbarPart* partRenderer = m_parts.get(ThumbPart);
if (!partRenderer)
return 0;
partRenderer->layout();
return orientation() == HorizontalScrollbar ? partRenderer->width() : partRenderer->height();
}
float RenderScrollbar::opacity()
{
RenderScrollbarPart* partRenderer = m_parts.get(ScrollbarBGPart);
if (!partRenderer)
return 1;
return partRenderer->style().opacity();
}
RenderScrollbar::RenderScrollbar(ScrollbarClient* client, ScrollbarOrientation orientation, RenderBox* renderer, Frame* owningFrame)
: Scrollbar(client, orientation, RegularScrollbar, RenderScrollbarTheme::renderScrollbarTheme())
, m_owner(renderer)
, m_owningFrame(owningFrame)
{
// FIXME: We need to do this because RenderScrollbar::styleChanged is called as soon as the scrollbar is created.
// Update the scrollbar size.
updateScrollbarPart(ScrollbarBGPart);
RenderScrollbarPart* part = m_parts.get(ScrollbarBGPart);
if (!part)
return;
part->layout();
setFrameRect(IntRect(0, 0, part->width(), part->height()));
}
void RenderScrollbar::updateScrollbarPart(ScrollbarPart partType, bool destroy)
{
if (partType == NoPart)
return;
RefPtr<RenderStyle> partStyle = !destroy ? getScrollbarPseudoStyle(partType, pseudoForScrollbarPart(partType)) : PassRefPtr<RenderStyle>(0);
bool needRenderer = !destroy && partStyle && partStyle->display() != NONE && partStyle->visibility() == VISIBLE;
if (needRenderer && partStyle->display() != BLOCK) {
// See if we are a button that should not be visible according to OS settings.
ScrollbarButtonsPlacement buttonsPlacement = theme()->buttonsPlacement();
switch (partType) {
case BackButtonStartPart:
needRenderer = (buttonsPlacement == ScrollbarButtonsSingle || buttonsPlacement == ScrollbarButtonsDoubleStart ||
buttonsPlacement == ScrollbarButtonsDoubleBoth);
break;
case ForwardButtonStartPart:
needRenderer = (buttonsPlacement == ScrollbarButtonsDoubleStart || buttonsPlacement == ScrollbarButtonsDoubleBoth);
break;
case BackButtonEndPart:
needRenderer = (buttonsPlacement == ScrollbarButtonsDoubleEnd || buttonsPlacement == ScrollbarButtonsDoubleBoth);
break;
case ForwardButtonEndPart:
needRenderer = (buttonsPlacement == ScrollbarButtonsSingle || buttonsPlacement == ScrollbarButtonsDoubleEnd ||
buttonsPlacement == ScrollbarButtonsDoubleBoth);
break;
default:
break;
}
}
RenderScrollbarPart* partRenderer = m_parts.get(partType);
if (!partRenderer && needRenderer) {
partRenderer = new (owningRenderer()->renderArena()) RenderScrollbarPart(owningRenderer()->document(), this, partType);
m_parts.set(partType, partRenderer);
} else if (partRenderer && !needRenderer) {
m_parts.remove(partType);
partRenderer->destroy();
partRenderer = 0;
}
if (partRenderer)
partRenderer->setStyle(partStyle.release());
}
void RenderScrollbar::readyWRATHWidgetPart(ContextOfWRATH *ctx,
PaintedWidgetsOfWRATHHandleT<Scrollbar> &hnd,
ScrollbarPart partType, const IntRect &rect)
{
RenderScrollbar_RenderPart *d;
d=RenderScrollbar_RenderPart::object(this, hnd);
ContextOfWRATH::AutoPushNode autoPushRoot(ctx, d->m_root_node);
d->m_part.visible(false);
RenderScrollbarPart* partRenderer = m_parts.get(partType);
if (!partRenderer)
return;
d->m_part.visible(true);
partRenderer->readyWRATHWidgetIntoRect(d->m_part, ctx, x(), y(), rect);
}
IntRect RenderScrollbar::trackPieceRectWithMargins(ScrollbarPart partType, const IntRect& oldRect)
{
RenderScrollbarPart* partRenderer = m_parts.get(partType);
if (!partRenderer)
return oldRect;
partRenderer->layout();
IntRect rect = oldRect;
if (orientation() == HorizontalScrollbar) {
rect.setX(rect.x() + partRenderer->marginLeft());
rect.setWidth(rect.width() - (partRenderer->marginLeft() + partRenderer->marginRight()));
} else {
rect.setY(rect.y() + partRenderer->marginTop());
rect.setHeight(rect.height() - (partRenderer->marginTop() + partRenderer->marginBottom()));
}
return rect;
}
IntRect RenderScrollbar::trackRect(int startLength, int endLength)
{
RenderScrollbarPart* part = m_parts.get(TrackBGPart);
if (part)
part->layout();
if (orientation() == HorizontalScrollbar) {
int marginLeft = part ? part->marginLeft() : 0;
int marginRight = part ? part->marginRight() : 0;
startLength += marginLeft;
endLength += marginRight;
int totalLength = startLength + endLength;
return IntRect(x() + startLength, y(), width() - totalLength, height());
}
int marginTop = part ? part->marginTop() : 0;
int marginBottom = part ? part->marginBottom() : 0;
startLength += marginTop;
endLength += marginBottom;
int totalLength = startLength + endLength;
return IntRect(x(), y() + startLength, width(), height() - totalLength);
}
IntRect RenderScrollbar::buttonRect(ScrollbarPart partType)
{
RenderScrollbarPart* partRenderer = m_parts.get(partType);
if (!partRenderer)
return IntRect();
partRenderer->layout();
bool isHorizontal = orientation() == HorizontalScrollbar;
if (partType == BackButtonStartPart)
return IntRect(x(), y(), isHorizontal ? partRenderer->width() : width(), isHorizontal ? height() : partRenderer->height());
if (partType == ForwardButtonEndPart)
return IntRect(isHorizontal ? x() + width() - partRenderer->width() : x(),
isHorizontal ? y() : y() + height() - partRenderer->height(),
isHorizontal ? partRenderer->width() : width(),
isHorizontal ? height() : partRenderer->height());
if (partType == ForwardButtonStartPart) {
IntRect previousButton = buttonRect(BackButtonStartPart);
return IntRect(isHorizontal ? x() + previousButton.width() : x(),
isHorizontal ? y() : y() + previousButton.height(),
isHorizontal ? partRenderer->width() : width(),
isHorizontal ? height() : partRenderer->height());
}
IntRect followingButton = buttonRect(ForwardButtonEndPart);
return IntRect(isHorizontal ? x() + width() - followingButton.width() - partRenderer->width() : x(),
isHorizontal ? y() : y() + height() - followingButton.height() - partRenderer->height(),
isHorizontal ? partRenderer->width() : width(),
isHorizontal ? height() : partRenderer->height());
}
RenderScrollbarPart* RenderScrollbarPart::createAnonymous(Document* document, RenderScrollbar* scrollbar, ScrollbarPart part)
{
RenderScrollbarPart* renderer = new (document->renderArena()) RenderScrollbarPart(scrollbar, part);
renderer->setDocumentForAnonymous(document);
return renderer;
}
