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LibWeb: Add LayoutStyle, a place to store style info for layout & paint

StyleProperties is really only the specified "input" to what eventually
becomes the used/computed style we use for layout and painting.

Unlike StyleProperties, LayoutStyle will have strongly typed values for
everything it contains (i.e no CSS::ValueID or strings, etc.)

This first patch moves z-index into LayoutStyle.
This commit is contained in:
Andreas Kling 2020-06-24 14:17:05 +02:00
parent 5e83a97fa2
commit 6f28f08096
5 changed files with 76 additions and 4 deletions

View file

@ -34,6 +34,7 @@
#include <LibWeb/Forward.h>
#include <LibWeb/Layout/BoxModelMetrics.h>
#include <LibWeb/Layout/LayoutPosition.h>
#include <LibWeb/Layout/LayoutStyle.h>
#include <LibWeb/Painting/PaintContext.h>
#include <LibWeb/TreeNode.h>
@ -190,6 +191,7 @@ public:
virtual LayoutNode& inline_wrapper() { return *this; }
const StyleProperties& specified_style() const;
const ImmutableLayoutStyle& style() const;
CSS::Position position() const;
CSS::TextAlign text_align() const;
@ -259,6 +261,8 @@ public:
const StyleProperties& specified_style() const { return m_specified_style; }
void set_specified_style(const StyleProperties& style) { m_specified_style = style; }
const ImmutableLayoutStyle& style() const { return static_cast<const ImmutableLayoutStyle&>(m_style); }
CSS::Position position() const { return m_position; }
CSS::TextAlign text_align() const { return m_text_align; }
@ -266,6 +270,10 @@ protected:
explicit LayoutNodeWithStyle(const Node*, NonnullRefPtr<StyleProperties>);
private:
void apply_style(const StyleProperties&);
LayoutStyle m_style;
NonnullRefPtr<StyleProperties> m_specified_style;
CSS::Position m_position;
CSS::TextAlign m_text_align;
@ -293,6 +301,13 @@ inline const StyleProperties& LayoutNode::specified_style() const
return parent()->specified_style();
}
inline const ImmutableLayoutStyle& LayoutNode::style() const
{
if (m_has_style)
return static_cast<const LayoutNodeWithStyle*>(this)->style();
return parent()->style();
}
inline CSS::Position LayoutNode::position() const
{
if (m_has_style)