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Location: cpp/openttd-patchpack/source/src/fontcache.cpp - annotation
r26913:e7b3d514fe34
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Revert 92c7551: Line drawing algorithm fix broke other cases (#10497)
This reverts commit 92c755161d6a467d33477bd0041fc720d7d9ba41.
This reverts commit 92c755161d6a467d33477bd0041fc720d7d9ba41.
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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 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] = { new SpriteFontCache(FS_NORMAL), new SpriteFontCache(FS_SMALL), new SpriteFontCache(FS_LARGE), new SpriteFontCache(FS_MONO) };
/* 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)
{
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 char *language_isocode, int winlangid, MissingGlyphSearcher *callback) { return false; }
#endif /* !defined(_WIN32) && !defined(__APPLE__) && !defined(WITH_FONTCONFIG) && !defined(WITH_COCOA) */
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