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LibWeb: Wrap font metrics into a struct

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Rather than passing an increasingly-unwieldy number of font parameters
individually to every function that resolves lengths, let's wrap them
up.

This is frustratingly close to being `Gfx::FontPixelMetrics`, but bitmap
fonts cause issues: We choose the closest font to what the CSS
requests, but that might have a wildly different size than what the
page expects, so we have to fudge the numbers.

No behaviour changes.
This commit is contained in:
Sam Atkins 2023-04-28 16:29:12 +01:00 • committed by Andreas Kling
parent 4a191875a9
commit 0679b4e0b9
14 changed files with 107 additions and 62 deletions
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6
Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusStyleValue.cpp
View file

@ -18,16 +18,16 @@ ErrorOr<String> BorderRadiusStyleValue::to_string() const
return String::formatted("{} / {}", TRY(m_properties.horizontal_radius.to_string()), TRY(m_properties.vertical_radius.to_string()));
}
ValueComparingNonnullRefPtr<StyleValue const> BorderRadiusStyleValue::absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const
ValueComparingNonnullRefPtr<StyleValue const> BorderRadiusStyleValue::absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const
{
if (m_properties.horizontal_radius.is_percentage() && m_properties.vertical_radius.is_percentage())
return *this;
auto absolutized_horizontal_radius = m_properties.horizontal_radius;
auto absolutized_vertical_radius = m_properties.vertical_radius;
if (!m_properties.horizontal_radius.is_percentage())
absolutized_horizontal_radius = m_properties.horizontal_radius.length().absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
absolutized_horizontal_radius = m_properties.horizontal_radius.length().absolutized(viewport_rect, font_metrics, root_font_metrics);
if (!m_properties.vertical_radius.is_percentage())
absolutized_vertical_radius = m_properties.vertical_radius.length().absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
absolutized_vertical_radius = m_properties.vertical_radius.length().absolutized(viewport_rect, font_metrics, root_font_metrics);
return BorderRadiusStyleValue::create(absolutized_horizontal_radius, absolutized_vertical_radius);
}

2
Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusStyleValue.h
View file

@ -38,7 +38,7 @@ private:
{
}
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const override;
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const override;
struct Properties {
bool is_elliptical;

4
Userland/Libraries/LibWeb/CSS/StyleValues/LengthStyleValue.cpp
View file

@ -27,9 +27,9 @@ ValueComparingNonnullRefPtr<LengthStyleValue> LengthStyleValue::create(Length co
return adopt_ref(*new LengthStyleValue(length));
}
ValueComparingNonnullRefPtr<StyleValue const> LengthStyleValue::absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const
ValueComparingNonnullRefPtr<StyleValue const> LengthStyleValue::absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const
{
if (auto length = m_length.absolutize(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height); length.has_value())
if (auto length = m_length.absolutize(viewport_rect, font_metrics, root_font_metrics); length.has_value())
return LengthStyleValue::create(length.release_value());
return *this;
}

2
Userland/Libraries/LibWeb/CSS/StyleValues/LengthStyleValue.h
View file

@ -23,7 +23,7 @@ public:
virtual bool has_length() const override { return true; }
virtual ErrorOr<String> to_string() const override { return m_length.to_string(); }
virtual Length to_length() const override { return m_length; }
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const override;
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const override;
bool properties_equal(LengthStyleValue const& other) const { return m_length == other.m_length; }

10
Userland/Libraries/LibWeb/CSS/StyleValues/ShadowStyleValue.cpp
View file

@ -20,12 +20,12 @@ ErrorOr<String> ShadowStyleValue::to_string() const
return builder.to_string();
}
ValueComparingNonnullRefPtr<StyleValue const> ShadowStyleValue::absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const
ValueComparingNonnullRefPtr<StyleValue const> ShadowStyleValue::absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const
{
auto absolutized_offset_x = m_properties.offset_x.absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
auto absolutized_offset_y = m_properties.offset_y.absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
auto absolutized_blur_radius = m_properties.blur_radius.absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
auto absolutized_spread_distance = m_properties.spread_distance.absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
auto absolutized_offset_x = m_properties.offset_x.absolutized(viewport_rect, font_metrics, root_font_metrics);
auto absolutized_offset_y = m_properties.offset_y.absolutized(viewport_rect, font_metrics, root_font_metrics);
auto absolutized_blur_radius = m_properties.blur_radius.absolutized(viewport_rect, font_metrics, root_font_metrics);
auto absolutized_spread_distance = m_properties.spread_distance.absolutized(viewport_rect, font_metrics, root_font_metrics);
return ShadowStyleValue::create(m_properties.color, absolutized_offset_x, absolutized_offset_y, absolutized_blur_radius, absolutized_spread_distance, m_properties.placement);
}

2
Userland/Libraries/LibWeb/CSS/StyleValues/ShadowStyleValue.h
View file

@ -46,7 +46,7 @@ private:
{
}
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const override;
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const override;
struct Properties {
Color color;