Method drawPage

src/core/map_printer.cpp:947–959

void MapPrinter::drawPage(QPainter* device_painter, const QRectF& page_extent, QImage* page_buffer) const
{
	// Determine transformation and clipping for page extent and region
	const qreal units_per_mm = options.resolution / 25.4;
	// Translate for top left page margin
	auto transform = QTransform::fromScale(units_per_mm, units_per_mm);
	transform.translate(page_format.page_rect.left(), page_format.page_rect.top());
	// Convert native map scale to print scale
	transform.scale(scale_adjustment, scale_adjustment);
	// Translate and clip for margins and print area
	transform.translate(-page_extent.left(), -page_extent.top());
	drawPage(device_painter, page_extent, transform, page_buffer);
}

void MapPrinter::drawPage(QPainter* device_painter, const QRectF& page_extent, const QTransform& page_extent_transform, QImage* page_buffer) const
{