void PrintContext::computePageRects(const FloatRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, float& outPageHeight, bool allowHorizontalTiling)
{
m_pageRects.clear();
outPageHeight = 0;
if (!m_frame->document() || !m_frame->view() || !m_frame->document()->renderer())
return;
if (userScaleFactor <= 0) {
LOG_ERROR("userScaleFactor has bad value %.2f", userScaleFactor);
return;
}
RenderView* view = toRenderView(m_frame->document()->renderer());
bool isHorizontal = view->style()->isHorizontalWritingMode();
float pageWidth;
float pageHeight;
if (isHorizontal) {
pageWidth = view->docWidth();
///NOTE: if we do not reuse the previously set logical page height,
/// we can end up with off-by-one erros in the page height,
/// leading to rendering issues (e.g. rows overlap pagebreaks)
if (view->pageLogicalHeight() == 0) {
float ratio = printRect.height() / printRect.width();
pageHeight = floorf(pageWidth * ratio);
} else {
pageHeight = view->pageLogicalHeight();
}
} else {
float ratio = printRect.width() / printRect.height();
pageHeight = view->docHeight();
pageWidth = floorf(pageHeight * ratio);
}
outPageHeight = pageHeight; // this is the height of the page adjusted by margins
pageHeight -= headerHeight + footerHeight;
if (pageHeight <= 0) {
LOG_ERROR("pageHeight has bad value %.2f", pageHeight);
return;
}
computePageRectsWithPageSizeInternal(FloatSize(pageWidth / userScaleFactor, pageHeight / userScaleFactor), allowHorizontalTiling);
}
void PrintContext::computePageRects(const FloatRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, float& outPageHeight, bool allowHorizontalTiling)
{
m_pageRects.clear();
outPageHeight = 0;
if (!m_frame->document() || !m_frame->view() || !m_frame->document()->renderer())
return;
if (userScaleFactor <= 0) {
LOG_ERROR("userScaleFactor has bad value %.2f", userScaleFactor);
return;
}
RenderView* view = toRenderView(m_frame->document()->renderer());
bool isHorizontal = view->style()->isHorizontalWritingMode();
float pageWidth;
float pageHeight;
if (isHorizontal) {
float ratio = printRect.height() / printRect.width();
pageWidth = view->docWidth();
pageHeight = floorf(pageWidth * ratio);
} else {
float ratio = printRect.width() / printRect.height();
pageHeight = view->docHeight();
pageWidth = floorf(pageHeight * ratio);
}
outPageHeight = pageHeight; // this is the height of the page adjusted by margins
pageHeight -= headerHeight + footerHeight;
if (pageHeight <= 0) {
LOG_ERROR("pageHeight has bad value %.2f", pageHeight);
return;
}
computePageRectsWithPageSizeInternal(FloatSize(pageWidth / userScaleFactor, pageHeight / userScaleFactor), allowHorizontalTiling);
}