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Location: cpp/openttd-patchpack/source/src/fontcache.cpp - annotation
r27835:eabfaa878ced
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Add: calendar date for Survey results
This means no heuristics is possible on around which date people
play the game.
This means no heuristics is possible on around which date people
play the game.
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* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file fontcache.cpp Cache for characters from fonts. */
#include "stdafx.h"
#include "fontcache.h"
#include "fontdetection.h"
#include "blitter/factory.hpp"
#include "gfx_layout.h"
#include "fontcache/spritefontcache.h"
#include "openttd.h"
#include "settings_func.h"
#include "strings_func.h"
#include "viewport_func.h"
#include "window_func.h"
#include "safeguards.h"
/** Default heights for the different sizes of fonts. */
static const int _default_font_height[FS_END] = {10, 6, 18, 10};
static const int _default_font_ascender[FS_END] = { 8, 5, 15, 8};
FontCacheSettings _fcsettings;
/**
* Create a new font cache.
* @param fs The size of the font.
*/
FontCache::FontCache(FontSize fs) : parent(FontCache::Get(fs)), fs(fs), height(_default_font_height[fs]),
ascender(_default_font_ascender[fs]), descender(_default_font_ascender[fs] - _default_font_height[fs]),
units_per_em(1)
{
assert(this->parent == nullptr || this->fs == this->parent->fs);
FontCache::caches[this->fs] = this;
Layouter::ResetFontCache(this->fs);
}
/** Clean everything up. */
FontCache::~FontCache()
{
assert(this->fs == this->parent->fs);
FontCache::caches[this->fs] = this->parent;
Layouter::ResetFontCache(this->fs);
}
int FontCache::GetDefaultFontHeight(FontSize fs)
{
return _default_font_height[fs];
}
/**
* Get the font name of a given font size.
* @param fs The font size to look up.
* @return The font name.
*/
std::string FontCache::GetName(FontSize fs)
{
FontCache *fc = FontCache::Get(fs);
if (fc != nullptr) {
return fc->GetFontName();
} else {
return "[NULL]";
}
}
/**
* Get height of a character for a given font size.
* @param size Font size to get height of
* @return Height of characters in the given font (pixels)
*/
int GetCharacterHeight(FontSize size)
{
return FontCache::Get(size)->GetHeight();
}
/* static */ FontCache *FontCache::caches[FS_END];
/* static */ void FontCache::InitializeFontCaches()
{
for (FontSize fs = FS_BEGIN; fs != FS_END; fs++) {
if (FontCache::caches[fs] == nullptr) new SpriteFontCache(fs); /* FontCache inserts itself into to the cache. */
}
}
/* Check if a glyph should be rendered with anti-aliasing. */
bool GetFontAAState(FontSize size, bool check_blitter)
{
/* AA is only supported for 32 bpp */
if (check_blitter && BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 32) return false;
return GetFontCacheSubSetting(size)->aa;
}
void SetFont(FontSize fontsize, const std::string& font, uint size, bool aa)
{
FontCacheSubSetting *setting = GetFontCacheSubSetting(fontsize);
bool changed = false;
if (setting->font != font) {
setting->font = font;
changed = true;
}
if (setting->size != size) {
setting->size = size;
changed = true;
}
if (setting->aa != aa) {
setting->aa = aa;
changed = true;
}
if (!changed) return;
if (fontsize != FS_MONO) {
/* Try to reload only the modified font. */
FontCacheSettings backup = _fcsettings;
for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
if (fs == fontsize) continue;
FontCache *fc = FontCache::Get(fs);
GetFontCacheSubSetting(fs)->font = fc->HasParent() ? fc->GetFontName() : "";
}
CheckForMissingGlyphs();
_fcsettings = backup;
} else {
InitFontCache(true);
}
LoadStringWidthTable();
UpdateAllVirtCoords();
ReInitAllWindows(true);
if (_save_config) SaveToConfig();
}
#ifdef WITH_FREETYPE
extern void LoadFreeTypeFont(FontSize fs);
extern void UninitFreeType();
#elif defined(_WIN32)
extern void LoadWin32Font(FontSize fs);
#elif defined(WITH_COCOA)
extern void LoadCoreTextFont(FontSize fs);
#endif
/**
* (Re)initialize the font cache related things, i.e. load the non-sprite fonts.
* @param monospace Whether to initialise the monospace or regular fonts.
*/
void InitFontCache(bool monospace)
{
FontCache::InitializeFontCaches();
for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
if (monospace != (fs == FS_MONO)) continue;
FontCache *fc = FontCache::Get(fs);
if (fc->HasParent()) delete fc;
#ifdef WITH_FREETYPE
LoadFreeTypeFont(fs);
#elif defined(_WIN32)
LoadWin32Font(fs);
#elif defined(WITH_COCOA)
LoadCoreTextFont(fs);
#endif
}
}
/**
* Free everything allocated w.r.t. fonts.
*/
void UninitFontCache()
{
for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
FontCache *fc = FontCache::Get(fs);
if (fc->HasParent()) delete fc;
}
#ifdef WITH_FREETYPE
UninitFreeType();
#endif /* WITH_FREETYPE */
}
/**
* Should any of the active fonts be anti-aliased?
* @return True if any of the loaded fonts want anti-aliased drawing.
*/
bool HasAntialiasedFonts()
{
for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
if (!FontCache::Get(fs)->IsBuiltInFont() && GetFontAAState(fs, false)) return true;
}
return false;
}
#if !defined(_WIN32) && !defined(__APPLE__) && !defined(WITH_FONTCONFIG) && !defined(WITH_COCOA)
bool SetFallbackFont(FontCacheSettings *settings, const std::string &language_isocode, int winlangid, MissingGlyphSearcher *callback) { return false; }
#endif /* !defined(_WIN32) && !defined(__APPLE__) && !defined(WITH_FONTCONFIG) && !defined(WITH_COCOA) */
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