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LibWeb/CSS: Implement 'background-blend-mode'

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This implements the 'background-blend-mode' CSS property.
This commit is contained in:
Glenn Skrzypczak 2025-03-20 15:36:36 +01:00 • committed by Sam Atkins
parent 1898643ba4
commit a73cd88f0c
Notes: github-actions[bot] 2025-03-28 09:42:07 +00:00
27 changed files with 303 additions and 199 deletions
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12
Libraries/LibWeb/Painting/StackingContext.cpp
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@ -14,6 +14,7 @@
#include <LibWeb/Layout/Box.h>
#include <LibWeb/Layout/ReplacedBox.h>
#include <LibWeb/Layout/Viewport.h>
#include <LibWeb/Painting/Blending.h>
#include <LibWeb/Painting/DisplayListRecorder.h>
#include <LibWeb/Painting/PaintableBox.h>
#include <LibWeb/Painting/SVGSVGPaintable.h>
@ -316,16 +317,7 @@ void StackingContext::paint(PaintContext& context) const
auto transform_matrix = paintable_box().transform();
auto transform_origin = paintable_box().transform_origin().to_type<float>();
Gfx::CompositingAndBlendingOperator compositing_and_blending_operator;
switch (paintable_box().computed_values().mix_blend_mode()) {
#undef __ENUMERATE
#define __ENUMERATE(mix_blend_mode) \
case CSS::MixBlendMode::mix_blend_mode: \
compositing_and_blending_operator = Gfx::CompositingAndBlendingOperator::mix_blend_mode; \
break;
ENUMERATE_MIX_BLEND_MODES(__ENUMERATE)
#undef __ENUMERATE
}
Gfx::CompositingAndBlendingOperator compositing_and_blending_operator = mix_blend_mode_to_compositing_and_blending_operator(paintable_box().computed_values().mix_blend_mode());
DisplayListRecorder::PushStackingContextParams push_stacking_context_params {
.opacity = opacity,