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LibPDF: Introduce rendering preferences and show clipping paths

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A new struct allows users to specify specific rendering preferences that
the Renderer class might use to paint some Document elements onto the
target bitmap. The first toggle allows rendering (or not) the clipping
paths on a page, which is useful for debugging.
This commit is contained in:
Rodrigo Tobar 2022-11-23 21:11:29 +08:00 • committed by Andreas Kling
parent a1e36e8f78
commit e92ec26771
2 changed files with 14 additions and 5 deletions
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10
Userland/Libraries/LibPDF/Renderer.cpp
View file

@ -21,9 +21,9 @@
namespace PDF {
PDFErrorOr<void> Renderer::render(Document& document, Page const& page, RefPtr<Gfx::Bitmap> bitmap)
PDFErrorOr<void> Renderer::render(Document& document, Page const& page, RefPtr<Gfx::Bitmap> bitmap, RenderingPreferences rendering_preferences)
{
return Renderer(document, page, bitmap).render();
return Renderer(document, page, bitmap, rendering_preferences).render();
}
static void rect_path(Gfx::Path& path, float x, float y, float width, float height)
@ -48,12 +48,13 @@ static Gfx::Path rect_path(Gfx::Rect<T> rect)
return rect_path(rect.x(), rect.y(), rect.width(), rect.height());
}
Renderer::Renderer(RefPtr<Document> document, Page const& page, RefPtr<Gfx::Bitmap> bitmap)
Renderer::Renderer(RefPtr<Document> document, Page const& page, RefPtr<Gfx::Bitmap> bitmap, RenderingPreferences rendering_preferences)
: m_document(document)
, m_bitmap(bitmap)
, m_page(page)
, m_painter(*bitmap)
, m_anti_aliasing_painter(m_painter)
, m_rendering_preferences(rendering_preferences)
{
auto media_box = m_page.media_box;
@ -247,6 +248,9 @@ void Renderer::begin_path_paint()
{
auto bounding_box = map(state().clipping_paths.current.bounding_box());
m_painter.clear_clip_rect();
if (m_rendering_preferences.show_clipping_paths) {
m_painter.stroke_path(rect_path(bounding_box), Color::Black, 1);
}
m_painter.add_clip_rect(bounding_box.to_type<int>());
}