int PrintContext::pageNumberForElement(Element* element, const FloatSize& pageSizeInPixels)
{
// Make sure the element is not freed during the layout.
RefPtrWillBeRawPtr<Element> protect(element);
element->document().updateLayout();
RenderBoxModelObject* box = enclosingBoxModelObject(element->renderer());
if (!box)
return -1;
LocalFrame* frame = element->document().frame();
FloatRect pageRect(FloatPoint(0, 0), pageSizeInPixels);
PrintContext printContext(frame);
printContext.begin(pageRect.width(), pageRect.height());
FloatSize scaledPageSize = pageSizeInPixels;
scaledPageSize.scale(frame->view()->contentsSize().width() / pageRect.width());
printContext.computePageRectsWithPageSize(scaledPageSize, false);
int top = box->pixelSnappedOffsetTop();
int left = box->pixelSnappedOffsetLeft();
size_t pageNumber = 0;
for (; pageNumber < printContext.pageCount(); pageNumber++) {
const IntRect& page = printContext.pageRect(pageNumber);
if (page.x() <= left && left < page.maxX() && page.y() <= top && top < page.maxY())
return pageNumber;
}
return -1;
}
int PrintContext::pageNumberForElement(Element* element,
const FloatSize& pageSizeInPixels) {
element->document().updateStyleAndLayout();
LocalFrame* frame = element->document().frame();
FloatRect pageRect(FloatPoint(0, 0), pageSizeInPixels);
PrintContext printContext(frame);
printContext.begin(pageRect.width(), pageRect.height());
LayoutBoxModelObject* box = enclosingBoxModelObject(element->layoutObject());
if (!box)
return -1;
FloatSize scaledPageSize = pageSizeInPixels;
scaledPageSize.scale(frame->view()->contentsSize().width() /
pageRect.width());
printContext.computePageRectsWithPageSize(scaledPageSize);
int top = box->pixelSnappedOffsetTop(box->offsetParent());
int left = box->pixelSnappedOffsetLeft(box->offsetParent());
size_t pageNumber = 0;
for (; pageNumber < printContext.pageCount(); pageNumber++) {
const IntRect& page = printContext.pageRect(pageNumber);
if (page.x() <= left && left < page.maxX() && page.y() <= top &&
top < page.maxY())
return pageNumber;
}
return -1;
}