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LibGfx: Make FontDatabase lookups take font (point) sizes as float

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This will allow web content to ask for fractional sizes, which becomes
important when converting between px/pt.
This commit is contained in:
Andreas Kling 2022-03-26 23:54:07 +01:00
parent eeeaf410fb
commit ee883372f6
Notes: sideshowbarker 2024-07-17 16:42:19 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/ee883372f6
4 changed files with 13 additions and 12 deletions
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8
Userland/Libraries/LibGfx/FontDatabase.cpp
View file

@ -161,20 +161,20 @@ RefPtr<Gfx::Font> FontDatabase::get_by_name(StringView name)
return it->value;
}
RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, unsigned size, unsigned weight, unsigned slope, Font::AllowInexactSizeMatch allow_inexact_size_match)
RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, float point_size, unsigned weight, unsigned slope, Font::AllowInexactSizeMatch allow_inexact_size_match)
{
for (auto typeface : m_private->typefaces) {
if (typeface->family() == family && typeface->weight() == weight && typeface->slope() == slope)
return typeface->get_font(size, allow_inexact_size_match);
return typeface->get_font(point_size, allow_inexact_size_match);
}
return nullptr;
}
RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, FlyString const& variant, unsigned size, Font::AllowInexactSizeMatch allow_inexact_size_match)
RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, FlyString const& variant, float point_size, Font::AllowInexactSizeMatch allow_inexact_size_match)
{
for (auto typeface : m_private->typefaces) {
if (typeface->family() == family && typeface->variant() == variant)
return typeface->get_font(size, allow_inexact_size_match);
return typeface->get_font(point_size, allow_inexact_size_match);
}
return nullptr;
}

4
Userland/Libraries/LibGfx/FontDatabase.h
View file

@ -44,8 +44,8 @@ public:
static void set_fixed_width_font_query(String);
static void set_default_fonts_lookup_path(String);
RefPtr<Gfx::Font> get(FlyString const& family, unsigned size, unsigned weight, unsigned slope, Font::AllowInexactSizeMatch = Font::AllowInexactSizeMatch::No);
RefPtr<Gfx::Font> get(FlyString const& family, FlyString const& variant, unsigned size, Font::AllowInexactSizeMatch = Font::AllowInexactSizeMatch::No);
RefPtr<Gfx::Font> get(FlyString const& family, float point_size, unsigned weight, unsigned slope, Font::AllowInexactSizeMatch = Font::AllowInexactSizeMatch::No);
RefPtr<Gfx::Font> get(FlyString const& family, FlyString const& variant, float point_size, Font::AllowInexactSizeMatch = Font::AllowInexactSizeMatch::No);
RefPtr<Gfx::Font> get_by_name(StringView);
void for_each_font(Function<void(const Gfx::Font&)>);
void for_each_fixed_width_font(Function<void(const Gfx::Font&)>);

11
Userland/Libraries/LibGfx/Typeface.cpp
View file

@ -48,11 +48,15 @@ void Typeface::set_ttf_font(RefPtr<TTF::Font> font)
m_ttf_font = move(font);
}
RefPtr<Font> Typeface::get_font(unsigned size, Font::AllowInexactSizeMatch allow_inexact_size_match) const
RefPtr<Font> Typeface::get_font(float point_size, Font::AllowInexactSizeMatch allow_inexact_size_match) const
{
VERIFY(size < NumericLimits<int>::max());
VERIFY(point_size > 0);
if (m_ttf_font)
return adopt_ref(*new TTF::ScaledFont(*m_ttf_font, point_size, point_size));
RefPtr<BitmapFont> best_match;
int size = roundf(point_size);
int best_delta = NumericLimits<int>::max();
for (auto font : m_bitmap_fonts) {
@ -70,9 +74,6 @@ RefPtr<Font> Typeface::get_font(unsigned size, Font::AllowInexactSizeMatch allow
if (allow_inexact_size_match == Font::AllowInexactSizeMatch::Yes && best_match)
return best_match;
if (m_ttf_font)
return adopt_ref(*new TTF::ScaledFont(*m_ttf_font, size, size));
return {};
}

2
Userland/Libraries/LibGfx/Typeface.h
View file

@ -36,7 +36,7 @@ public:
void add_bitmap_font(RefPtr<BitmapFont>);
void set_ttf_font(RefPtr<TTF::Font>);
RefPtr<Font> get_font(unsigned size, Font::AllowInexactSizeMatch = Font::AllowInexactSizeMatch::No) const;
RefPtr<Font> get_font(float point_size, Font::AllowInexactSizeMatch = Font::AllowInexactSizeMatch::No) const;
private:
FlyString m_family;