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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/FlyString.h>
#include <AK/NonnullRefPtrVector.h>
#include <AK/QuickSort.h>
#include <LibCore/DirIterator.h>
#include <LibGfx/Font.h>
#include <LibGfx/FontDatabase.h>
#include <LibGfx/TrueTypeFont/Font.h>
#include <LibGfx/Typeface.h>
#include <stdlib.h>
namespace Gfx {
FontDatabase& FontDatabase::the()
{
static FontDatabase s_the;
return s_the;
}
static RefPtr<Font> s_default_font;
static String s_default_font_query;
static RefPtr<Font> s_fixed_width_font;
static String s_fixed_width_font_query;
static String s_default_fonts_lookup_path = "/res/fonts";
void FontDatabase::set_default_font_query(String query)
{
if (s_default_font_query == query)
return;
s_default_font_query = move(query);
s_default_font = nullptr;
}
String FontDatabase::default_font_query()
{
return s_default_font_query;
}
void FontDatabase::set_default_fonts_lookup_path(String path)
{
if (s_default_fonts_lookup_path == path)
return;
s_default_fonts_lookup_path = move(path);
}
String FontDatabase::default_fonts_lookup_path()
{
return s_default_fonts_lookup_path;
}
Font& FontDatabase::default_font()
{
if (!s_default_font) {
VERIFY(!s_default_font_query.is_empty());
s_default_font = FontDatabase::the().get_by_name(s_default_font_query);
VERIFY(s_default_font);
}
return *s_default_font;
}
void FontDatabase::set_fixed_width_font_query(String query)
{
if (s_fixed_width_font_query == query)
return;
s_fixed_width_font_query = move(query);
s_fixed_width_font = nullptr;
}
String FontDatabase::fixed_width_font_query()
{
return s_fixed_width_font_query;
}
Font& FontDatabase::default_fixed_width_font()
{
if (!s_fixed_width_font) {
VERIFY(!s_fixed_width_font_query.is_empty());
s_fixed_width_font = FontDatabase::the().get_by_name(s_fixed_width_font_query);
VERIFY(s_fixed_width_font);
}
return *s_fixed_width_font;
}
struct FontDatabase::Private {
HashMap<String, NonnullRefPtr<Gfx::Font>> full_name_to_font_map;
Vector<RefPtr<Typeface>> typefaces;
};
FontDatabase::FontDatabase()
: m_private(make<Private>())
{
Core::DirIterator dir_iterator(s_default_fonts_lookup_path, Core::DirIterator::SkipDots);
if (dir_iterator.has_error()) {
warnln("DirIterator: {}", dir_iterator.error_string());
exit(1);
}
while (dir_iterator.has_next()) {
auto path = dir_iterator.next_full_path();
if (path.ends_with(".font"sv)) {
if (auto font = Gfx::BitmapFont::load_from_file(path)) {
m_private->full_name_to_font_map.set(font->qualified_name(), *font);
auto typeface = get_or_create_typeface(font->family(), font->variant());
typeface->add_bitmap_font(font);
}
} else if (path.ends_with(".ttf"sv)) {
// FIXME: What about .otf and .woff
if (auto font_or_error = TTF::Font::try_load_from_file(path); !font_or_error.is_error()) {
auto font = font_or_error.release_value();
auto typeface = get_or_create_typeface(font->family(), font->variant());
typeface->set_ttf_font(move(font));
}
}
}
}
void FontDatabase::for_each_font(Function<void(const Gfx::Font&)> callback)
{
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 Gfx::Font&)> callback)
{
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(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(StringView name)
{
auto it = m_private->full_name_to_font_map.find(name);
if (it == m_private->full_name_to_font_map.end()) {
auto parts = name.split_view(" "sv);
if (parts.size() >= 4) {
auto slope = parts.take_last().to_int().value_or(0);
auto weight = parts.take_last().to_int().value_or(0);
auto size = parts.take_last().to_int().value_or(0);
auto family = String::join(' ', parts);
return get(family, size, weight, slope);
}
dbgln("Font lookup failed: '{}'", name);
return nullptr;
}
return it->value;
}
RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, unsigned 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 nullptr;
}
RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, FlyString const& variant, unsigned 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 nullptr;
}
RefPtr<Typeface> FontDatabase::get_or_create_typeface(const String& family, const String& variant)
{
for (auto typeface : m_private->typefaces) {
if (typeface->family() == family && typeface->variant() == variant)
return typeface;
}
auto typeface = adopt_ref(*new Typeface(family, variant));
m_private->typefaces.append(typeface);
return typeface;
}
void FontDatabase::for_each_typeface(Function<void(const Typeface&)> callback)
{
for (auto typeface : m_private->typefaces) {
callback(*typeface);
}
}
}
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