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LibAccelGfx+LibWeb: Add text shadow support in GPU painter

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Aliaksandr Kalenik 2023-12-03 18:05:21 +01:00 • committed by Andreas Kling
parent b5f9c1d003
commit 5c0cd0f484
6 changed files with 133 additions and 4 deletions
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23
Userland/Libraries/LibWeb/Painting/PaintingCommandExecutorGPU.cpp
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@ -165,9 +165,28 @@ CommandResult PaintingCommandExecutorGPU::paint_inner_box_shadow(PaintOuterBoxSh
return CommandResult::Continue;
}
CommandResult PaintingCommandExecutorGPU::paint_text_shadow(int, Gfx::IntRect const&, Gfx::IntRect const&, Span<Gfx::DrawGlyphOrEmoji const>, Color const&, int, Gfx::IntPoint const&)
CommandResult PaintingCommandExecutorGPU::paint_text_shadow(int blur_radius, Gfx::IntRect const& shadow_bounding_rect, Gfx::IntRect const& text_rect, Span<Gfx::DrawGlyphOrEmoji const> glyph_run, Color const& color, int fragment_baseline, Gfx::IntPoint const& draw_location)
{
// FIXME
auto text_shadow_canvas = AccelGfx::Canvas::create(shadow_bounding_rect.size());
auto text_shadow_painter = AccelGfx::Painter::create();
text_shadow_painter->set_target_canvas(text_shadow_canvas);
text_shadow_painter->clear(color.with_alpha(0));
Gfx::FloatRect const shadow_location { draw_location, shadow_bounding_rect.size() };
Gfx::IntPoint const baseline_start(text_rect.x(), text_rect.y() + fragment_baseline);
text_shadow_painter->translate(baseline_start.to_type<float>());
text_shadow_painter->draw_glyph_run(glyph_run, color);
if (blur_radius == 0) {
painter().blit_canvas(shadow_location, *text_shadow_canvas);
return CommandResult::Continue;
}
auto horizontal_blur_canvas = AccelGfx::Canvas::create(shadow_bounding_rect.size());
auto horizontal_blur_painter = AccelGfx::Painter::create();
horizontal_blur_painter->set_target_canvas(horizontal_blur_canvas);
horizontal_blur_painter->clear(color.with_alpha(0));
horizontal_blur_painter->blit_blurred_canvas(shadow_bounding_rect.to_type<float>(), *text_shadow_canvas, blur_radius, AccelGfx::Painter::BlurDirection::Horizontal);
painter().blit_blurred_canvas(shadow_location, *horizontal_blur_canvas, blur_radius, AccelGfx::Painter::BlurDirection::Vertical);
return CommandResult::Continue;
}