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LibWeb: Respect CSS image-rendering mode when painting canvas elements

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If the content wants to be pixelated, we should honor that and paint
with nearest-neighbor scaling. The fact that it's faster is a nice bonus
as well. :^)
This commit is contained in:
Andreas Kling 2022-03-06 01:40:43 +01:00
parent 9fc419395e
commit 7d5d5b387e
Notes: sideshowbarker 2024-07-17 17:53:33 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/7d5d5b387e
1 changed files with 4 additions and 2 deletions
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6
Userland/Libraries/LibWeb/Layout/CanvasBox.cpp
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@ -36,8 +36,10 @@ void CanvasBox::paint(PaintContext& context, PaintPhase phase)
if (!context.viewport_rect().intersects(enclosing_int_rect(absolute_rect())))
return;
if (dom_node().bitmap())
context.painter().draw_scaled_bitmap(rounded_int_rect(absolute_rect()), *dom_node().bitmap(), dom_node().bitmap()->rect(), 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
if (dom_node().bitmap()) {
auto scaling_mode = computed_values().image_rendering() == CSS::ImageRendering::Pixelated ? Gfx::Painter::ScalingMode::NearestNeighbor : Gfx::Painter::ScalingMode::BilinearBlend;
context.painter().draw_scaled_bitmap(rounded_int_rect(absolute_rect()), *dom_node().bitmap(), dom_node().bitmap()->rect(), 1.0f, scaling_mode);
}
}
}