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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
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/SVGSVGPaintable.cpp
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@ -5,6 +5,7 @@
*/
#include <LibWeb/Layout/ImageBox.h>
#include <LibWeb/Painting/Blending.h>
#include <LibWeb/Painting/DisplayListRecorder.h>
#include <LibWeb/Painting/SVGSVGPaintable.h>
#include <LibWeb/Painting/StackingContext.h>
@ -60,16 +61,7 @@ void SVGSVGPaintable::paint_svg_box(PaintContext& context, PaintableBox const& s
auto const& filter = computed_values.filter();
auto masking_area = svg_box.get_masking_area();
Gfx::CompositingAndBlendingOperator compositing_and_blending_operator;
switch (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(computed_values.mix_blend_mode());
auto needs_to_save_state = computed_values.isolation() == CSS::Isolation::Isolate || compositing_and_blending_operator != Gfx::CompositingAndBlendingOperator::Normal || svg_box.has_css_transform() || svg_box.get_masking_area().has_value();