IntSize ScrollableArea::scrollbarIntrusion() const
{
return {
verticalScrollbar() ? verticalScrollbar()->occupiedWidth() : 0,
horizontalScrollbar() ? horizontalScrollbar()->occupiedHeight() : 0
};
}
ScrollPosition ScrollableArea::scrollPosition() const
{
// FIXME: This relationship seems to be inverted. Scrollbars should be 'view', not 'model', and should get their values from us.
int x = horizontalScrollbar() ? horizontalScrollbar()->value() : 0;
int y = verticalScrollbar() ? verticalScrollbar()->value() : 0;
return IntPoint(x, y);
}
void ScrollableArea::setScrollbarOverlayStyle(ScrollbarOverlayStyle overlayStyle)
{
m_scrollbarOverlayStyle = overlayStyle;
if (horizontalScrollbar()) {
ScrollbarTheme::theme()->updateScrollbarOverlayStyle(horizontalScrollbar());
horizontalScrollbar()->invalidate();
}
if (verticalScrollbar()) {
ScrollbarTheme::theme()->updateScrollbarOverlayStyle(verticalScrollbar());
verticalScrollbar()->invalidate();
}
}
/*
* The following is assumed:
* (hadj && vadj) || (!hadj && !vadj)
*/
void ScrollView::setGtkAdjustments(GtkAdjustment* hadj, GtkAdjustment* vadj, bool resetValues)
{
ASSERT(!hadj == !vadj);
m_horizontalAdjustment = hadj;
m_verticalAdjustment = vadj;
// Reset the adjustments to a sane default
if (m_horizontalAdjustment) {
ScrollbarGtk* hScrollbar = reinterpret_cast<ScrollbarGtk*>(horizontalScrollbar());
if (hScrollbar)
hScrollbar->attachAdjustment(m_horizontalAdjustment);
ScrollbarGtk* vScrollbar = reinterpret_cast<ScrollbarGtk*>(verticalScrollbar());
if (vScrollbar)
vScrollbar->attachAdjustment(m_verticalAdjustment);
// We used to reset everything to 0 here, but when page cache
// is enabled we reuse FrameViews that are cached. Since their
// size is not going to change when being restored, (which is
// what would cause the upper limit in the adjusments to be
// set in the normal case), we make sure they are up-to-date
// here. This is needed for the parent scrolling widget to be
// able to report correct values.
m_horizontalAdjustment->lower = 0;
m_horizontalAdjustment->upper = resetValues ? 0 : frameRect().width();
m_horizontalAdjustment->value = resetValues ? 0 : scrollOffset().width();
gtk_adjustment_changed(m_horizontalAdjustment);
gtk_adjustment_value_changed(m_horizontalAdjustment);
m_verticalAdjustment->lower = 0;
m_verticalAdjustment->upper = resetValues ? 0 : frameRect().height();
m_verticalAdjustment->value = resetValues ? 0 : scrollOffset().height();
gtk_adjustment_changed(m_verticalAdjustment);
gtk_adjustment_value_changed(m_verticalAdjustment);
} else {
ScrollbarGtk* hScrollbar = reinterpret_cast<ScrollbarGtk*>(horizontalScrollbar());
if (hScrollbar)
hScrollbar->detachAdjustment();
ScrollbarGtk* vScrollbar = reinterpret_cast<ScrollbarGtk*>(verticalScrollbar());
if (vScrollbar)
vScrollbar->detachAdjustment();
}
/* reconsider having a scrollbar */
setHasVerticalScrollbar(false);
setHasHorizontalScrollbar(false);
}
IntRect ScrollView::visibleContentRect(bool includeScrollbars) const
{
// If we are an interior frame scrollbar or are in some sort of transition
// state, just calculate our size based on what the GTK+ theme says the
// scrollbar width should be.
if (parent() || !hostWindow() || !hostWindow()->platformPageClient()) {
return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()),
IntSize(max(0, m_boundsSize.width() - (verticalScrollbar() && !includeScrollbars ? verticalScrollbar()->width() : 0)),
max(0, m_boundsSize.height() - (horizontalScrollbar() && !includeScrollbars ? horizontalScrollbar()->height() : 0))));
}
// We don't have a parent, so we are the main frame and thus have
// a parent widget which we can use to measure the visible region.
GtkWidget* measuredWidget = hostWindow()->platformPageClient();
GtkWidget* parentWidget = gtk_widget_get_parent(measuredWidget);
// We may not be in a widget that displays scrollbars, but we may
// have other kinds of decoration that make us smaller.
if (parentWidget && includeScrollbars)
measuredWidget = parentWidget;
GtkAllocation allocation;
gtk_widget_get_allocation(measuredWidget, &allocation);
return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()),
IntSize(allocation.width, allocation.height));
}
/*
Test that vertical and horizontal mac-style scrollbars paint their
entire area.
*/
void tst_MacGui::scrollbarPainting()
{
ColorWidget colorWidget;
colorWidget.resize(400, 400);
QSize scrollBarSize;
QScrollBar verticalScrollbar(&colorWidget);
verticalScrollbar.move(10, 10);
scrollBarSize = verticalScrollbar.sizeHint();
scrollBarSize.setHeight(200);
verticalScrollbar.resize(scrollBarSize);
QScrollBar horizontalScrollbar(&colorWidget);
horizontalScrollbar.move(30, 10);
horizontalScrollbar.setOrientation(Qt::Horizontal);
scrollBarSize = horizontalScrollbar.sizeHint();
scrollBarSize.setWidth(200);
horizontalScrollbar.resize(scrollBarSize);
colorWidget.show();
colorWidget.raise();
QTest::qWait(100);
QImage image = grabWindowContents(&colorWidget).toImage();
QVERIFY(isContent(image, verticalScrollbar.geometry(), GuiTester::Horizontal));
#ifdef Q_OS_MAC
// this test seems to be unstable on OS X 10.6 (Snow Leopard)
if (!isContent(image, horizontalScrollbar.geometry(), GuiTester::Vertical)) {
QEXPECT_FAIL("", "QTBUG-20984", Abort);
}
#endif
QVERIFY(isContent(image, horizontalScrollbar.geometry(), GuiTester::Vertical));
}
/*
Test that vertical and horizontal mac-style scrollbars paint their
entire area.
*/
void tst_MacGui::scrollbarPainting()
{
ColorWidget colorWidget;
colorWidget.resize(400, 400);
QSize scrollBarSize;
QScrollBar verticalScrollbar(&colorWidget);
verticalScrollbar.move(10, 10);
scrollBarSize = verticalScrollbar.sizeHint();
scrollBarSize.setHeight(200);
verticalScrollbar.resize(scrollBarSize);
QScrollBar horizontalScrollbar(&colorWidget);
horizontalScrollbar.move(30, 10);
horizontalScrollbar.setOrientation(Qt::Horizontal);
scrollBarSize = horizontalScrollbar.sizeHint();
scrollBarSize.setWidth(200);
horizontalScrollbar.resize(scrollBarSize);
colorWidget.show();
colorWidget.raise();
QTest::qWait(100);
QPixmap pixmap = grabWindowContents(&colorWidget);
QVERIFY(isContent(pixmap.toImage(), verticalScrollbar.geometry(), GuiTester::Horizontal));
QVERIFY(isContent(pixmap.toImage(), horizontalScrollbar.geometry(), GuiTester::Vertical));
}
bool ScrollableArea::hasOverlayScrollbars() const
{
Scrollbar* vScrollbar = verticalScrollbar();
if (vScrollbar && vScrollbar->isOverlayScrollbar())
return true;
Scrollbar* hScrollbar = horizontalScrollbar();
return hScrollbar && hScrollbar->isOverlayScrollbar();
}
void ScrollableArea::setScrollbarOverlayStyle(ScrollbarOverlayStyle overlayStyle)
{
m_scrollbarOverlayStyle = overlayStyle;
if (horizontalScrollbar()) {
ScrollbarTheme::theme()->updateScrollbarOverlayStyle(*horizontalScrollbar());
horizontalScrollbar()->invalidate();
if (ScrollAnimator* scrollAnimator = existingScrollAnimator())
scrollAnimator->invalidateScrollbarPartLayers(horizontalScrollbar());
}
if (verticalScrollbar()) {
ScrollbarTheme::theme()->updateScrollbarOverlayStyle(*verticalScrollbar());
verticalScrollbar()->invalidate();
if (ScrollAnimator* scrollAnimator = existingScrollAnimator())
scrollAnimator->invalidateScrollbarPartLayers(verticalScrollbar());
}
}
void ScrollView::setHorizontalAdjustment(GtkAdjustment* hadj, bool resetValues)
{
ASSERT(!parent() || !hadj);
if (parent())
return;
m_horizontalAdjustment = hadj;
if (!m_horizontalAdjustment) {
MainFrameScrollbarGtk* hScrollbar = reinterpret_cast<MainFrameScrollbarGtk*>(horizontalScrollbar());
if (hScrollbar)
hScrollbar->detachAdjustment();
return;
}
// We may be lacking scrollbars when returning to a cached
// page, this kicks the page to recreate the scrollbars.
setHasHorizontalScrollbar(true);
MainFrameScrollbarGtk* hScrollbar = reinterpret_cast<MainFrameScrollbarGtk*>(horizontalScrollbar());
hScrollbar->attachAdjustment(m_horizontalAdjustment.get());
// We used to reset everything to 0 here, but when page cache
// is enabled we reuse FrameViews that are cached. Since their
// size is not going to change when being restored, (which is
// what would cause the upper limit in the adjusments to be
// set in the normal case), we make sure they are up-to-date
// here. This is needed for the parent scrolling widget to be
// able to report correct values.
int horizontalPageStep = max(max<int>(frameRect().width() * Scrollbar::minFractionToStepWhenPaging(), frameRect().width() - Scrollbar::maxOverlapBetweenPages()), 1);
gtk_adjustment_configure(m_horizontalAdjustment.get(),
resetValues ? 0 : scrollOffset().width(), 0,
resetValues ? 0 : contentsSize().width(),
resetValues ? 0 : Scrollbar::pixelsPerLineStep(),
resetValues ? 0 : horizontalPageStep,
resetValues ? 0 : frameRect().width());
}
IntSize ScrollableArea::excludeScrollbars(const IntSize& size) const
{
int verticalScrollbarWidth = 0;
int horizontalScrollbarHeight = 0;
if (Scrollbar* verticalBar = verticalScrollbar())
verticalScrollbarWidth = !verticalBar->isOverlayScrollbar() ? verticalBar->width() : 0;
if (Scrollbar* horizontalBar = horizontalScrollbar())
horizontalScrollbarHeight = !horizontalBar->isOverlayScrollbar() ? horizontalBar->height() : 0;
return IntSize(std::max(0, size.width() - verticalScrollbarWidth),
std::max(0, size.height() - horizontalScrollbarHeight));
}
void ScrollableArea::invalidateScrollbar(Scrollbar* scrollbar, const IntRect& rect)
{
#if USE(ACCELERATED_COMPOSITING)
if (scrollbar == horizontalScrollbar()) {
if (GraphicsLayer* graphicsLayer = layerForHorizontalScrollbar()) {
graphicsLayer->setNeedsDisplay();
return;
}
} else if (scrollbar == verticalScrollbar()) {
if (GraphicsLayer* graphicsLayer = layerForVerticalScrollbar()) {
graphicsLayer->setNeedsDisplay();
return;
}
}
#endif
invalidateScrollbarRect(scrollbar, rect);
}
IntRect ScrollableArea::visibleContentRectInternal(VisibleContentRectIncludesScrollbars scrollbarInclusion, VisibleContentRectBehavior) const
{
int verticalScrollbarWidth = 0;
int horizontalScrollbarHeight = 0;
if (scrollbarInclusion == IncludeScrollbars) {
if (Scrollbar* verticalBar = verticalScrollbar())
verticalScrollbarWidth = verticalBar->occupiedWidth();
if (Scrollbar* horizontalBar = horizontalScrollbar())
horizontalScrollbarHeight = horizontalBar->occupiedHeight();
}
return IntRect(scrollPosition().x(),
scrollPosition().y(),
std::max(0, visibleWidth() + verticalScrollbarWidth),
std::max(0, visibleHeight() + horizontalScrollbarHeight));
}
void PaintInvalidationCapableScrollableArea::invalidatePaintOfScrollControlsIfNeeded(const PaintInvalidationState& paintInvalidationState, const LayoutBoxModelObject& paintInvalidationContainer)
{
LayoutBox& box = boxForScrollControlPaintInvalidation();
invalidatePaintOfScrollbarIfNeeded(horizontalScrollbar(), layerForHorizontalScrollbar(), m_horizontalScrollbarPreviouslyWasOverlay, m_horizontalScrollbarPreviousPaintInvalidationRect, horizontalScrollbarNeedsPaintInvalidation(), box, paintInvalidationState, paintInvalidationContainer);
invalidatePaintOfScrollbarIfNeeded(verticalScrollbar(), layerForVerticalScrollbar(), m_verticalScrollbarPreviouslyWasOverlay, m_verticalScrollbarPreviousPaintInvalidationRect, verticalScrollbarNeedsPaintInvalidation(), box, paintInvalidationState, paintInvalidationContainer);
LayoutRect scrollCornerPaintInvalidationRect = scrollControlPaintInvalidationRect(scrollCornerAndResizerRect(), box, paintInvalidationState, paintInvalidationContainer);
if (invalidatePaintOfScrollControlIfNeeded(scrollCornerPaintInvalidationRect, m_scrollCornerAndResizerPreviousPaintInvalidationRect, scrollCornerNeedsPaintInvalidation(), box, paintInvalidationContainer)) {
m_scrollCornerAndResizerPreviousPaintInvalidationRect = scrollCornerPaintInvalidationRect;
if (LayoutScrollbarPart* scrollCorner = this->scrollCorner())
scrollCorner->invalidateDisplayItemClientsIncludingNonCompositingDescendants(&paintInvalidationContainer, PaintInvalidationScroll);
if (LayoutScrollbarPart* resizer = this->resizer())
resizer->invalidateDisplayItemClientsIncludingNonCompositingDescendants(&paintInvalidationContainer, PaintInvalidationScroll);
}
clearNeedsPaintInvalidationForScrollControls();
}
void ScrollableArea::invalidateScrollbar(Scrollbar* scrollbar, const IntRect& rect)
{
if (scrollbar == horizontalScrollbar()) {
if (GraphicsLayer* graphicsLayer = layerForHorizontalScrollbar()) {
graphicsLayer->setNeedsDisplay();
graphicsLayer->setContentsNeedsDisplay();
return;
}
} else if (scrollbar == verticalScrollbar()) {
if (GraphicsLayer* graphicsLayer = layerForVerticalScrollbar()) {
graphicsLayer->setNeedsDisplay();
graphicsLayer->setContentsNeedsDisplay();
return;
}
}
invalidateScrollbarRect(scrollbar, rect);
}
IntRect ScrollableArea::visibleContentRect(bool includeScrollbars) const
{
int verticalScrollbarWidth = 0;
int horizontalScrollbarHeight = 0;
if (includeScrollbars) {
if (Scrollbar* verticalBar = verticalScrollbar())
verticalScrollbarWidth = !verticalBar->isOverlayScrollbar() ? verticalBar->width() : 0;
if (Scrollbar* horizontalBar = horizontalScrollbar())
horizontalScrollbarHeight = !horizontalBar->isOverlayScrollbar() ? horizontalBar->height() : 0;
}
return IntRect(scrollPosition().x(),
scrollPosition().y(),
std::max(0, visibleWidth() + verticalScrollbarWidth),
std::max(0, visibleHeight() + horizontalScrollbarHeight));
}
IntRect RenderLayerScrollableArea::scrollCornerRect() const
{
// We have a scrollbar corner when a scrollbar is visible and not filling the entire length of the box.
// This happens when both scrollbars are present.
const Scrollbar* horizontalBar = horizontalScrollbar();
const Scrollbar* verticalBar = verticalScrollbar();
if (!horizontalBar || !verticalBar)
return IntRect();
const RenderStyle* style = box().style();
int horizontalThickness = verticalBar->width();
int verticalThickness = horizontalBar->height();
const IntRect& bounds = box().pixelSnappedBorderBoxRect();
return IntRect(cornerStart(style, bounds.x(), bounds.maxX(), horizontalThickness),
bounds.maxY() - verticalThickness - style->borderBottomWidth(),
horizontalThickness, verticalThickness);
}
IntRect ScrollView::visibleContentRect(bool includeScrollbars) const
{
if (!m_horizontalAdjustment)
return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()),
IntSize(max(0, width() - (verticalScrollbar() && !includeScrollbars ? verticalScrollbar()->width() : 0)),
max(0, height() - (horizontalScrollbar() && !includeScrollbars ? horizontalScrollbar()->height() : 0))));
// Main frame.
GtkWidget* measuredWidget = hostWindow()->platformPageClient();
GtkWidget* parent = gtk_widget_get_parent(measuredWidget);
// We may not be in a widget that displays scrollbars, but we may
// have other kinds of decoration that make us smaller.
if (parent && includeScrollbars)
measuredWidget = parent;
return IntRect(IntPoint(m_scrollOffset.width(), m_scrollOffset.height()),
IntSize(measuredWidget->allocation.width,
measuredWidget->allocation.height));
}
bool ScrollableArea::scroll(ScrollDirection direction, ScrollGranularity granularity, float multiplier)
{
ScrollbarOrientation orientation;
Scrollbar* scrollbar;
if (direction == ScrollUp || direction == ScrollDown) {
orientation = VerticalScrollbar;
scrollbar = verticalScrollbar();
} else {
orientation = HorizontalScrollbar;
scrollbar = horizontalScrollbar();
}
if (!scrollbar)
return false;
float step = 0;
switch (granularity) {
case ScrollByLine:
step = scrollbar->lineStep();
break;
case ScrollByPage:
step = scrollbar->pageStep();
break;
case ScrollByDocument:
step = scrollbar->totalSize();
break;
case ScrollByPixel:
case ScrollByPrecisePixel:
step = scrollbar->pixelStep();
break;
case ScrollByPixelVelocity:
break;
}
if (granularity != ScrollByPixelVelocity && (direction == ScrollUp || direction == ScrollLeft))
multiplier = -multiplier;
return scrollAnimator()->scroll(orientation, granularity, step, multiplier);
}
void ScrollableArea::invalidateScrollbar(Scrollbar* scrollbar, const IntRect& rect)
{
if (scrollbar == horizontalScrollbar()) {
if (GraphicsLayer* graphicsLayer = layerForHorizontalScrollbar()) {
graphicsLayer->setNeedsDisplay();
graphicsLayer->setContentsNeedsDisplay();
return;
}
invalidateScrollbarRect(scrollbar, rect);
return;
}
if (scrollbar == verticalScrollbar()) {
if (GraphicsLayer* graphicsLayer = layerForVerticalScrollbar()) {
graphicsLayer->setNeedsDisplay();
graphicsLayer->setContentsNeedsDisplay();
return;
}
invalidateScrollbarRect(scrollbar, rect);
return;
}
// Otherwise the scrollbar is just created and has not been set as either
// horizontalScrollbar() or verticalScrollbar().
}
int ScrollableArea::verticalScrollbarIntrusion() const
{
return horizontalScrollbar() ? horizontalScrollbar()->occupiedHeight() : 0;
}
void RenderLayerScrollableArea::updateAfterLayout()
{
m_scrollDimensionsDirty = true;
IntSize originalScrollOffset = adjustedScrollOffset();
computeScrollDimensions();
// Layout may cause us to be at an invalid scroll position. In this case we need
// to pull our scroll offsets back to the max (or push them up to the min).
IntSize clampedScrollOffset = clampScrollOffset(adjustedScrollOffset());
if (clampedScrollOffset != adjustedScrollOffset())
scrollToOffset(clampedScrollOffset);
if (originalScrollOffset != adjustedScrollOffset())
scrollToOffsetWithoutAnimation(-scrollOrigin() + adjustedScrollOffset());
bool hasHorizontalOverflow = this->hasHorizontalOverflow();
bool hasVerticalOverflow = this->hasVerticalOverflow();
{
// Hits in compositing/overflow/automatically-opt-into-composited-scrolling-after-style-change.html.
DisableCompositingQueryAsserts disabler;
// overflow:scroll should just enable/disable.
if (box().style()->overflowX() == OSCROLL)
horizontalScrollbar()->setEnabled(hasHorizontalOverflow);
if (box().style()->overflowY() == OSCROLL)
verticalScrollbar()->setEnabled(hasVerticalOverflow);
}
// overflow:auto may need to lay out again if scrollbars got added/removed.
bool autoHorizontalScrollBarChanged = box().hasAutoHorizontalScrollbar() && (hasHorizontalScrollbar() != hasHorizontalOverflow);
bool autoVerticalScrollBarChanged = box().hasAutoVerticalScrollbar() && (hasVerticalScrollbar() != hasVerticalOverflow);
if (autoHorizontalScrollBarChanged || autoVerticalScrollBarChanged) {
if (box().hasAutoHorizontalScrollbar())
setHasHorizontalScrollbar(hasHorizontalOverflow);
if (box().hasAutoVerticalScrollbar())
setHasVerticalScrollbar(hasVerticalOverflow);
layer()->updateSelfPaintingLayer();
if (box().style()->overflowX() == OAUTO || box().style()->overflowY() == OAUTO) {
if (!m_inOverflowRelayout) {
// Our proprietary overflow: overlay value doesn't trigger a layout.
m_inOverflowRelayout = true;
SubtreeLayoutScope layoutScope(box());
layoutScope.setNeedsLayout(&box());
if (box().isRenderBlock()) {
RenderBlock& block = toRenderBlock(box());
block.scrollbarsChanged(autoHorizontalScrollBarChanged, autoVerticalScrollBarChanged);
block.layoutBlock(true);
} else {
box().layout();
}
m_inOverflowRelayout = false;
}
}
}
{
// Hits in compositing/overflow/automatically-opt-into-composited-scrolling-after-style-change.html.
DisableCompositingQueryAsserts disabler;
// Set up the range (and page step/line step).
if (Scrollbar* horizontalScrollbar = this->horizontalScrollbar()) {
int clientWidth = box().pixelSnappedClientWidth();
horizontalScrollbar->setProportion(clientWidth, overflowRect().width());
}
if (Scrollbar* verticalScrollbar = this->verticalScrollbar()) {
int clientHeight = box().pixelSnappedClientHeight();
verticalScrollbar->setProportion(clientHeight, overflowRect().height());
}
}
bool hasOverflow = hasScrollableHorizontalOverflow() || hasScrollableVerticalOverflow();
updateScrollableAreaSet(hasOverflow);
if (hasOverflow) {
DisableCompositingQueryAsserts disabler;
positionOverflowControls(IntSize());
}
}
IntPoint ScrollableArea::scrollPosition() const
{
int x = horizontalScrollbar() ? horizontalScrollbar()->value() : 0;
int y = verticalScrollbar() ? verticalScrollbar()->value() : 0;
return IntPoint(x, y);
}
bool ScrollableArea::hasOverlayScrollbars() const
{
return (verticalScrollbar() && verticalScrollbar()->isOverlayScrollbar())
|| (horizontalScrollbar() && horizontalScrollbar()->isOverlayScrollbar());
}
bool ScrollbarGroup::userInputScrollable(ScrollbarOrientation orientation) const
{
return orientation == HorizontalScrollbar ? horizontalScrollbar() : verticalScrollbar();
}
