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LibWeb: Give SVG geometry elements a position

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This makes the selected-in-the-inspector outline appear in the right
place. We take the stroke-width into account when producing the
bounding box, which makes the fit nice and snug. :^)
This commit is contained in:
Sam Atkins 2022-02-16 15:17:50 +00:00 committed by Andreas Kling
parent ae93aeb414
commit aba8774c9c
Notes: sideshowbarker 2024-07-17 20:33:50 +09:00 
Author: https://github.com/AtkinsSJ
Commit: https://github.com/SerenityOS/serenity/commit/aba8774c9c
Pull-request: https://github.com/SerenityOS/serenity/pull/12578
4 changed files with 16 additions and 4 deletions
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9
Userland/Libraries/LibWeb/Layout/SVGFormattingContext.cpp
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@ -32,7 +32,14 @@ void SVGFormattingContext::run(Box& box, LayoutMode)
if (is<SVGGeometryBox>(descendant)) {
auto& geometry_box = static_cast<SVGGeometryBox&>(descendant);
auto& path = geometry_box.dom_node().get_path();
geometry_box.set_content_size(path.bounding_box().size());
auto bounding_box = path.bounding_box();
// Stroke increases the path's size by stroke_width/2 per side.
auto stroke_width = geometry_box.dom_node().stroke_width().value_or(0);
bounding_box.inflate(stroke_width, stroke_width);
geometry_box.set_offset(bounding_box.top_left());
geometry_box.set_content_size(bounding_box.size());
total_bounding_box = total_bounding_box.united(path.bounding_box());
}

2
Userland/Libraries/LibWeb/Layout/SVGGeometryBox.cpp
View File

@ -32,7 +32,7 @@ void SVGGeometryBox::paint(PaintContext& context, PaintPhase phase)
Gfx::AntiAliasingPainter painter { context.painter() };
auto& svg_context = context.svg_context();
auto offset = absolute_position();
auto offset = svg_context.svg_element_position();
painter.translate(offset);
if (auto fill_color = geometry_element.fill_color().value_or(svg_context.fill_color()); fill_color.alpha() > 0) {

2
Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
View File

@ -19,7 +19,7 @@ void SVGSVGBox::before_children_paint(PaintContext& context, PaintPhase phase)
return;
if (!context.has_svg_context())
context.set_svg_context(SVGContext());
context.set_svg_context(SVGContext(absolute_rect()));
SVGGraphicsBox::before_children_paint(context, phase);
}

7
Userland/Libraries/LibWeb/SVG/SVGContext.h
View File

@ -8,12 +8,14 @@
#include <AK/Vector.h>
#include <LibGfx/Color.h>
#include <LibGfx/Rect.h>
namespace Web {
class SVGContext {
public:
SVGContext()
SVGContext(Gfx::FloatRect svg_element_bounds)
: m_svg_element_bounds(svg_element_bounds)
{
m_states.append(State());
}
@ -26,6 +28,8 @@ public:
void set_stroke_color(Gfx::Color color) { state().stroke_color = color; }
void set_stroke_width(float width) { state().stroke_width = width; }
Gfx::FloatPoint svg_element_position() const { return m_svg_element_bounds.top_left(); }
void save() { m_states.append(m_states.last()); }
void restore() { m_states.take_last(); }
@ -39,6 +43,7 @@ private:
const State& state() const { return m_states.last(); }
State& state() { return m_states.last(); }
Gfx::FloatRect m_svg_element_bounds;
Vector<State> m_states;
};