IntPoint ScrollableArea::constrainScrollPositionForOverhang(const IntRect& visibleContentRect, const IntSize& totalContentsSize, const IntPoint& scrollPosition, const IntPoint& scrollOrigin, int headerHeight, int footerHeight)
{
// The viewport rect that we're scrolling shouldn't be larger than our document.
IntSize idealScrollRectSize(std::min(visibleContentRect.width(), totalContentsSize.width()), std::min(visibleContentRect.height(), totalContentsSize.height()));
IntRect scrollRect(scrollPosition + scrollOrigin - IntSize(0, headerHeight), idealScrollRectSize);
IntRect documentRect(IntPoint(), IntSize(totalContentsSize.width(), totalContentsSize.height() - headerHeight - footerHeight));
// Use intersection to constrain our ideal scroll rect by the document rect.
scrollRect.intersect(documentRect);
if (scrollRect.size() != idealScrollRectSize) {
// If the rect was clipped, restore its size, effectively pushing it "down" from the top left.
scrollRect.setSize(idealScrollRectSize);
// If we still clip, push our rect "up" from the bottom right.
scrollRect.intersect(documentRect);
if (scrollRect.width() < idealScrollRectSize.width())
scrollRect.move(-(idealScrollRectSize.width() - scrollRect.width()), 0);
if (scrollRect.height() < idealScrollRectSize.height())
scrollRect.move(0, -(idealScrollRectSize.height() - scrollRect.height()));
}
return scrollRect.location() - toIntSize(scrollOrigin);
}
void QLabelPrivate::ensureTextLayouted() const
{
if (!textLayoutDirty)
return;
ensureTextPopulated();
if (control) {
QTextDocument *doc = control->document();
QTextOption opt = doc->defaultTextOption();
opt.setAlignment(QFlag(this->align));
if (this->align & Qt::TextWordWrap)
opt.setWrapMode(QTextOption::WordWrap);
else
opt.setWrapMode(QTextOption::ManualWrap);
doc->setDefaultTextOption(opt);
QTextFrameFormat fmt = doc->rootFrame()->frameFormat();
fmt.setMargin(0);
doc->rootFrame()->setFrameFormat(fmt);
doc->setTextWidth(documentRect().width());
}
textLayoutDirty = false;
}
// Return the layout rect - this is the rect that is given to the layout painting code
// This may be different from the document rect since vertical alignment is not
// done by the text layout code
QRectF QLabelPrivate::layoutRect() const
{
QRectF cr = documentRect();
if (!control)
return cr;
ensureTextLayouted();
// Caculate y position manually
qreal rh = control->document()->documentLayout()->documentSize().height();
qreal yo = 0;
if (align & Qt::AlignVCenter)
yo = qMax((cr.height()-rh)/2, qreal(0));
else if (align & Qt::AlignBottom)
yo = qMax(cr.height()-rh, qreal(0));
return QRectF(cr.x(), yo + cr.y(), cr.width(), cr.height());
}
void KPrViewModePreviewShapeAnimations::activate(KoPAViewMode *previousViewMode)
{
m_savedViewMode = previousViewMode; // store the previous view mode
m_animationCache = new KPrAnimationCache();
m_canvas->shapeManager()->setPaintingStrategy(new KPrShapeManagerAnimationStrategy(m_canvas->shapeManager(),
m_animationCache,
new KPrPageSelectStrategyActive(m_canvas)));
// the update of the canvas is needed so that the old page gets drawn fully before the effect starts
const KoPageLayout &layout = activePageLayout();
QSizeF pageSize(layout.width, layout.height);
//calculate size of union page + viewport
QSizeF documentMinSize(view()->zoomController()->documentSize());
// create a rect out of it with origin in tp left of page
QRectF documentRect(QPointF((documentMinSize.width() - layout.width) * -0.5,
(documentMinSize.height() - layout.height) * -0.5),
documentMinSize);
QPointF offset = -documentRect.topLeft();
m_canvas->setDocumentOrigin(offset);
m_view->zoomController()->setPageSize(pageSize);
m_canvas->resourceManager()->setResource(KoCanvasResourceManager::PageSize, pageSize);
m_canvas->repaint();
m_timeLine.setDuration(m_shapeAnimation->duration());
m_timeLine.setCurrentTime(0);
m_animationCache->clear();
m_animationCache->setPageSize(view()->zoomController()->pageSize());
qreal zoom;
view()->zoomHandler()->zoom(&zoom, &zoom);
m_animationCache->setZoom(zoom);
m_shapeAnimation->init(m_animationCache, 0);
m_animationCache->startStep(0);
m_timeLine.start();
connect(&m_timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(animate()));
}
