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LibWeb: Make CSS background image painting respect destination origin and transparency

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It was previously using draw_tiled_bitmap, which always aligns the
tiles with the global origin and does not respect the alpha of the
source. Switch to a new Painter::blit_tiled helper which uses
Painter::blit under the hood, which has more correct behavior.
This commit is contained in:
Mihai Parparita 2021-03-05 16:42:50 -08:00 • committed by Andreas Kling
parent e97865e982
commit c2f3d3afe1
3 changed files with 28 additions and 4 deletions
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Userland/Libraries/LibGfx/Painter.h
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@ -77,6 +77,7 @@ public:
void draw_tiled_bitmap(const IntRect& dst_rect, const Gfx::Bitmap&);
void blit_offset(const IntPoint&, const Gfx::Bitmap&, const IntRect& src_rect, const IntPoint&);
void blit_disabled(const IntPoint&, const Gfx::Bitmap&, const IntRect&, const Palette&);
void blit_tiled(const IntRect&, const Gfx::Bitmap&, const IntRect& src_rect);
void draw_text(const IntRect&, const StringView&, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
void draw_text(const IntRect&, const StringView&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
void draw_text(const IntRect&, const Utf32View&, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);