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LibWeb: Scale font size to device pixels

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Aliaksandr Kalenik 2023-02-09 12:05:19 +03:00 committed by Linus Groh
parent 1cc8895e4b
commit ac440e6c0e
1 changed files with 19 additions and 2 deletions
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21
Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
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@ -8,6 +8,7 @@
#include <AK/GenericShorthands.h>
#include <LibUnicode/CharacterTypes.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/FontCache.h>
#include <LibWeb/HTML/HTMLHtmlElement.h>
#include <LibWeb/Layout/BlockContainer.h>
#include <LibWeb/Layout/InitialContainingBlock.h>
@ -511,14 +512,30 @@ static void paint_text_fragment(PaintContext& context, Layout::TextNode const& t
DevicePixelPoint baseline_start { fragment_absolute_device_rect.x(), fragment_absolute_device_rect.y() + context.rounded_device_pixels(fragment.baseline()) };
Utf8View view { text.substring_view(fragment.start(), fragment.length()) };
painter.draw_text_run(baseline_start.to_type<int>(), view, fragment.layout_node().font(), text_node.computed_values().color());
auto& font = fragment.layout_node().font();
auto scaled_font = [&]() -> RefPtr<Gfx::Font> {
auto device_font_pt_size = context.enclosing_device_pixels(font.presentation_size());
FontSelector font_selector = { font.family(), static_cast<float>(device_font_pt_size.value()), font.weight(), font.width(), font.slope() };
if (auto cached_font = FontCache::the().get(font_selector)) {
return cached_font;
}
if (auto font_with_device_pt_size = font.with_size(static_cast<float>(device_font_pt_size.value()))) {
FontCache::the().set(font_selector, *font_with_device_pt_size);
return font_with_device_pt_size;
}
return {};
}();
painter.draw_text_run(baseline_start.to_type<int>(), view, scaled_font ? *scaled_font : font, text_node.computed_values().color());
auto selection_rect = context.enclosing_device_rect(fragment.selection_rect(text_node.font())).to_type<int>();
if (!selection_rect.is_empty()) {
painter.fill_rect(selection_rect, context.palette().selection());
Gfx::PainterStateSaver saver(painter);
painter.add_clip_rect(selection_rect);
painter.draw_text_run(baseline_start.to_type<int>(), view, fragment.layout_node().font(), context.palette().selection_text());
painter.draw_text_run(baseline_start.to_type<int>(), view, scaled_font ? *scaled_font : font, context.palette().selection_text());
}
paint_text_decoration(context, painter, text_node, fragment);