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LibPDF: Implement /Mask support with stream object argument

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Nico Weber 2023-12-22 18:34:17 -05:00 committed by Andreas Kling
parent a3507ef65b
commit b63eb4a4dd
Notes: sideshowbarker 2024-07-17 01:11:48 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/b63eb4a4dd
Pull-request: https://github.com/SerenityOS/serenity/pull/22398
1 changed files with 2 additions and 1 deletions
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3
Userland/Libraries/LibPDF/Renderer.cpp
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@ -1221,7 +1221,8 @@ PDFErrorOr<void> Renderer::show_image(NonnullRefPtr<StreamObject> image)
} else if (image_dict->contains(CommonNames::Mask)) {
auto mask_object = TRY(image_dict->get_object(m_document, CommonNames::Mask));
if (mask_object->is<StreamObject>()) {
return Error::rendering_unsupported_error("/Mask stream objects not yet implemented");
auto mask_bitmap = TRY(load_image(mask_object->cast<StreamObject>()));
TRY(apply_alpha_channel(image_bitmap.bitmap, mask_bitmap.bitmap));
} else if (mask_object->is<ArrayObject>()) {
return Error::rendering_unsupported_error("/Mask array objects not yet implemented");
}