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LibGfx: Implement Rect::to_rounded<U>()

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This replaces the usage of `rounded_int_rect`, whose name did not
accurately reflect the rounding operation happening. For example, the
position of the rect was not rounded but floored, and the size was
pulled through `roundf` before casting to `int` which could result in
inadvertent flooring if the resulting floating point could not exactly
represent the rounded value.
This commit is contained in:
Jelle Raaijmakers 2022-03-23 09:19:13 +01:00 • committed by Andreas Kling
parent bec474d99b
commit ab19b092ed
5 changed files with 16 additions and 9 deletions
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2
Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
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@ -180,7 +180,7 @@ DOM::ExceptionOr<void> CanvasRenderingContext2D::draw_image(CanvasImageSource co
if (!painter)
return {};
auto transformed_destination_rect = m_drawing_state.transform.map(destination_rect);
painter->draw_scaled_bitmap(rounded_int_rect(transformed_destination_rect), *bitmap, source_rect, 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
painter->draw_scaled_bitmap(transformed_destination_rect.to_rounded<int>(), *bitmap, source_rect, 1.0f, Gfx::Painter::ScalingMode::BilinearBlend);
// 7. If image is not origin-clean, then set the CanvasRenderingContext2D's origin-clean flag to false.
if (image_is_not_origin_clean(image))