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LibWeb: Attach BackgroundAttachment::Fixed to the window view port

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This fixes the placement of several background images on Acid2, most
notably the background of the eyes and the red rectangle near the bottom
of the head.
This commit is contained in:
Timothy Flynn 2022-03-25 13:39:52 -04:00 • committed by Andreas Kling
parent a5ea066693
commit e5db67d6dd
1 changed files with 13 additions and 3 deletions
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16
Userland/Libraries/LibWeb/Painting/BackgroundPainting.cpp
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@ -6,12 +6,14 @@
*/
#include <LibGfx/Painter.h>
#include <LibWeb/Layout/InitialContainingBlock.h>
#include <LibWeb/Layout/Node.h>
#include <LibWeb/Painting/BackgroundPainting.h>
#include <LibWeb/Painting/PaintContext.h>
namespace Web::Painting {
// https://www.w3.org/TR/css-backgrounds-3/#backgrounds
void paint_background(PaintContext& context, Layout::NodeWithStyleAndBoxModelMetrics const& layout_node, Gfx::IntRect const& border_rect, Color background_color, Vector<CSS::BackgroundLayerData> const* background_layers, BorderRadiusData const& border_radius)
{
auto& painter = context.painter();
@ -57,10 +59,18 @@ void paint_background(PaintContext& context, Layout::NodeWithStyleAndBoxModelMet
painter.save();
painter.add_clip_rect(clip_rect);
// FIXME: Attachment
Gfx::IntRect background_positioning_area;
// Origin
auto background_positioning_area = get_box(layer.origin);
// Attachment and Origin
switch (layer.attachment) {
case CSS::BackgroundAttachment::Fixed:
background_positioning_area = layout_node.root().browsing_context().viewport_rect();
break;
case CSS::BackgroundAttachment::Local:
case CSS::BackgroundAttachment::Scroll:
background_positioning_area = get_box(layer.origin);
break;
}
// Size
Gfx::IntRect image_rect;