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LibWeb: Extract border-radius normalization code from Box
This is going to be needed by InlineNodes too! `BorderPainting.{h,cpp}` might not be the best place for it, but it works for now.
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4 changed files with 39 additions and 29 deletions
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@ -299,28 +299,13 @@ void Box::paint_box_shadow(PaintContext& context)
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context.painter().blit(rect.location() + blur_rect_position, *new_bitmap, rect);
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}
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Box::BorderRadiusData Box::normalized_border_radius_data()
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Painting::BorderRadiusData Box::normalized_border_radius_data()
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{
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// FIXME: some values should be relative to the height() if specified, but which? For now, all relative values are relative to the width.
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auto bottom_left_radius = computed_values().border_bottom_left_radius().resolved_or_zero(*this, width()).to_px(*this);
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auto bottom_right_radius = computed_values().border_bottom_right_radius().resolved_or_zero(*this, width()).to_px(*this);
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auto top_left_radius = computed_values().border_top_left_radius().resolved_or_zero(*this, width()).to_px(*this);
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auto top_right_radius = computed_values().border_top_right_radius().resolved_or_zero(*this, width()).to_px(*this);
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// Scale overlapping curves according to https://www.w3.org/TR/css-backgrounds-3/#corner-overlap
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auto bordered_rect = this->bordered_rect();
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auto f = 1.0f;
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f = min(f, bordered_rect.width() / (float)(top_left_radius + top_right_radius));
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f = min(f, bordered_rect.height() / (float)(top_right_radius + bottom_right_radius));
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f = min(f, bordered_rect.width() / (float)(bottom_left_radius + bottom_right_radius));
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f = min(f, bordered_rect.height() / (float)(top_left_radius + bottom_left_radius));
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top_left_radius = (int)(top_left_radius * f);
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top_right_radius = (int)(top_right_radius * f);
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bottom_right_radius = (int)(bottom_right_radius * f);
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bottom_left_radius = (int)(bottom_left_radius * f);
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return { top_left_radius, top_right_radius, bottom_right_radius, bottom_left_radius };
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return Painting::normalized_border_radius_data(*this, bordered_rect(),
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computed_values().border_top_left_radius(),
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computed_values().border_top_right_radius(),
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computed_values().border_bottom_right_radius(),
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computed_values().border_bottom_left_radius());
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}
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// https://www.w3.org/TR/css-display-3/#out-of-flow
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