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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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7
Userland/Libraries/LibWeb/CSS/MediaQuery.cpp
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@ -167,11 +167,10 @@ bool MediaFeature::compare(HTML::Window const& window, MediaFeatureValue left, C
auto const& initial_font = window.associated_document().style_computer().initial_font();
Gfx::FontPixelMetrics const& initial_font_metrics = initial_font.pixel_metrics();
float initial_font_size = initial_font.presentation_size();
float initial_line_height = initial_font_metrics.line_spacing();
Length::FontMetrics font_metrics { static_cast<CSSPixels>(initial_font.presentation_size()), initial_font_metrics, initial_font_metrics.line_spacing() };
left_px = left.length().to_px(viewport_rect, initial_font_metrics, initial_font_size, initial_font_size, initial_line_height, initial_line_height);
right_px = right.length().to_px(viewport_rect, initial_font_metrics, initial_font_size, initial_font_size, initial_line_height, initial_line_height);
left_px = left.length().to_px(viewport_rect, font_metrics, font_metrics);
right_px = right.length().to_px(viewport_rect, font_metrics, font_metrics);
}
switch (comparison) {