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LibGfx+LibGUI+Clients: Make fonts findable by their qualified name

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The qualified name of a font is "<Family> <Size> <Weight>". You can
get the QN of a Font via the Font::qualified_name() API, and you can
get any system font by QN from the GUI::FontDatabase. :^)
This commit is contained in:
Andreas Kling 2020-10-25 19:28:06 +01:00
parent 260b52215c
commit 9d347352a1
8 changed files with 57 additions and 61 deletions
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55
Libraries/LibGUI/FontDatabase.cpp
View file

@ -24,6 +24,7 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/NonnullRefPtrVector.h>
#include <AK/QuickSort.h>
#include <LibCore/DirIterator.h>
#include <LibGUI/FontDatabase.h>
@ -43,7 +44,12 @@ FontDatabase& FontDatabase::the()
return *s_the;
}
struct FontDatabase::Private {
HashMap<String, RefPtr<Gfx::Font>> full_name_to_font_map;
};
FontDatabase::FontDatabase()
: m_private(make<Private>())
{
Core::DirIterator di("/res/fonts", Core::DirIterator::SkipDots);
if (di.has_error()) {
@ -57,11 +63,7 @@ FontDatabase::FontDatabase()
auto path = String::format("/res/fonts/%s", name.characters());
if (auto font = Gfx::Font::load_from_file(path)) {
Metadata metadata;
metadata.path = path;
metadata.glyph_height = font->glyph_height();
metadata.is_fixed_width = font->is_fixed_width();
m_name_to_metadata.set(font->name(), move(metadata));
m_private->full_name_to_font_map.set(font->qualified_name(), font);
}
}
}
@ -70,36 +72,39 @@ FontDatabase::~FontDatabase()
{
}
void FontDatabase::for_each_font(Function<void(const StringView&)> callback)
void FontDatabase::for_each_font(Function<void(const Gfx::Font&)> callback)
{
Vector<String> names;
names.ensure_capacity(m_name_to_metadata.size());
for (auto& it : m_name_to_metadata)
names.append(it.key);
quick_sort(names);
for (auto& name : names)
callback(name);
Vector<RefPtr<Gfx::Font>> fonts;
fonts.ensure_capacity(m_private->full_name_to_font_map.size());
for (auto& it : m_private->full_name_to_font_map)
fonts.append(it.value);
quick_sort(fonts, [](auto& a, auto& b) { return a->qualified_name() < b->qualified_name(); });
for (auto& font : fonts)
callback(*font);
}
void FontDatabase::for_each_fixed_width_font(Function<void(const StringView&)> callback)
void FontDatabase::for_each_fixed_width_font(Function<void(const Gfx::Font&)> callback)
{
Vector<String> names;
names.ensure_capacity(m_name_to_metadata.size());
for (auto& it : m_name_to_metadata) {
if (it.value.is_fixed_width)
names.append(it.key);
Vector<RefPtr<Gfx::Font>> fonts;
fonts.ensure_capacity(m_private->full_name_to_font_map.size());
for (auto& it : m_private->full_name_to_font_map) {
if (it.value->is_fixed_width())
fonts.append(it.value);
}
quick_sort(names);
for (auto& name : names)
callback(name);
quick_sort(fonts, [](auto& a, auto& b) { return a->qualified_name() < b->qualified_name(); });
for (auto& font : fonts)
callback(*font);
}
RefPtr<Gfx::Font> FontDatabase::get_by_name(const StringView& name)
{
auto it = m_name_to_metadata.find(name);
if (it == m_name_to_metadata.end())
auto it = m_private->full_name_to_font_map.find(name);
if (it == m_private->full_name_to_font_map.end()) {
dbgln("Font lookup failed: '{}'", name);
return nullptr;
return Gfx::Font::load_from_file((*it).value.path);
}
dbgln("Font lookup succeeded: '{}'", name);
return it->value;
}
}