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LibPDF/PDFViewer: Support rotated pages

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Matthew Olsson 2021-05-10 11:52:48 -07:00 • committed by Andreas Kling
parent fbe712e265
commit d5f94aaa7b
3 changed files with 22 additions and 3 deletions
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11
Userland/Applications/PDFViewer/PDFViewer.cpp
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@ -87,5 +87,16 @@ RefPtr<Gfx::Bitmap> PDFViewer::render_page(const PDF::Page& page)
auto bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { width, height });
PDF::Renderer::render(*m_document, page, bitmap);
if (page.rotate != 0) {
int rotation_count = (page.rotate / 90) % 4;
if (rotation_count == 3) {
bitmap = bitmap->rotated(Gfx::RotationDirection::CounterClockwise);
} else {
for (int i = 0; i < rotation_count; i++)
bitmap = bitmap->rotated(Gfx::RotationDirection::Clockwise);
}
}
return bitmap;
}