diff options
Diffstat (limited to 'libcore/fontmanager.c')
| -rw-r--r-- | libcore/fontmanager.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/libcore/fontmanager.c b/libcore/fontmanager.c new file mode 100644 index 0000000..1dcba44 --- /dev/null +++ b/libcore/fontmanager.c @@ -0,0 +1,174 @@ +#include "fontmanager.h" +#include "../config.h" +#include <ft2build.h> +#include FT_FREETYPE_H + +using namespace std; + +cMutex cFontManager::mutex; + +cFontManager::cFontManager() { +} + +cFontManager::~cFontManager() { + DeleteFonts(); +} + +void cFontManager::CacheFonts(cTemplate *tpl) { + cMutexLock MutexLock(&mutex); + + vector< pair<string, int> > usedFonts = tpl->GetUsedFonts(); + + cStringList availableFonts; + cFont::GetAvailableFontNames(&availableFonts); + + for (vector< pair<string, int> >::iterator ft = usedFonts.begin(); ft != usedFonts.end(); ft++) { + string fontName = ft->first; + int fontSize = ft->second; + if (fontSize < 1) { + continue; + } + + int fontAvailable = availableFonts.Find(fontName.c_str()); + if (fontAvailable == -1) { + esyslog("skindesigner: font %s not available, skipping", fontName.c_str()); + continue; + } + + InsertFont(fontName, fontSize); + } +} + +void cFontManager::Debug(void) { + dsyslog("skindesigner: fontmanager fonts available:"); + for (map < string, map< int, cFont* > >::iterator fts = fonts.begin(); fts != fonts.end(); fts++) { + dsyslog("skindesigner: FontName %s", fts->first.c_str()); + for (map<int, cFont*>::iterator ftSizes = (fts->second).begin(); ftSizes != (fts->second).end(); ftSizes++) { + int confHeight = ftSizes->first; + int realHeight = (ftSizes->second)->Height(); + dsyslog("skindesigner: fontSize %d, fontHeight %d, ratio %f", confHeight, realHeight, (double)confHeight / (double)realHeight); + } + } +} + +void cFontManager::ListAvailableFonts(void) { + cStringList availableFonts; + cFont::GetAvailableFontNames(&availableFonts); + int numFonts = availableFonts.Size(); + esyslog("skindesigner: %d Fonts available:", numFonts); + for (int i=0; i<numFonts; i++) { + esyslog("skindesigner: font %d: %s", i, availableFonts[i]); + } +} + +void cFontManager::DeleteFonts() { + cMutexLock MutexLock(&mutex); + for(map<string, map<int,cFont*> >::iterator it = fonts.begin(); it != fonts.end(); it++) { + for(map<int,cFont*>::iterator it2 = (it->second).begin(); it2 != (it->second).end(); it2++) { + delete it2->second; + } + } + fonts.clear(); +} + +int cFontManager::Width(string fontName, int fontSize, const char *text) { + cMutexLock MutexLock(&mutex); + if (!text) + return 0; + cFont *font = GetFont(fontName, fontSize); + //if not already cached, load it new + if (!font) + InsertFont(fontName, fontSize); + font = GetFont(fontName, fontSize); + if (!font) + return 0; + int width = font->Width(text); + return width; +} + +int cFontManager::Height(string fontName, int fontSize) { + cMutexLock MutexLock(&mutex); + cFont *font = GetFont(fontName, fontSize); + //if not already cached, load it new + if (!font) + InsertFont(fontName, fontSize); + font = GetFont(fontName, fontSize); + if (!font) + return 0; + return font->Height(); +} + +cFont *cFontManager::Font(string fontName, int fontSize) { + cMutexLock MutexLock(&mutex); + cFont *font = GetFont(fontName, fontSize); + //if not already cached, load it new + if (!font) + InsertFont(fontName, fontSize); + font = GetFont(fontName, fontSize); + return font; +} + +/******************************************************************************** +* Private Functions +********************************************************************************/ + +cFont *cFontManager::CreateFont(string name, int size) { + cMutexLock MutexLock(&mutex); + cFont *fontTmp = cFont::CreateFont(name.c_str(), size); + if (!fontTmp) + fontTmp = cFont::CreateFont(Setup.FontOsd, size); + int realHeight = fontTmp->Height(); + delete fontTmp; + cFont *font = cFont::CreateFont(name.c_str(), (double)size / (double)realHeight * (double)size); + if (!font) + font = cFont::CreateFont(Setup.FontOsd, (double)size / (double)realHeight * (double)size); + return font; +} + +void cFontManager::InsertFont(string name, int size) { + cFont *newFont = CreateFont(name, size); + if (!newFont) + return; + map < string, map< int, cFont* > >::iterator hit = fonts.find(name); + if (hit != fonts.end()) { + (hit->second).insert(pair<int, cFont*>(size, newFont)); + } else { + map<int, cFont*> fontsizes; + fontsizes.insert(pair<int, cFont*>(size, newFont)); + fonts.insert(pair<string, map<int, cFont*> >(name, fontsizes)); + } +} + +cFont *cFontManager::GetFont(string name, int size) { + map< string, map<int,cFont*> >::iterator hitName = fonts.find(name); + if (hitName == fonts.end()) + return NULL; + map<int,cFont*>::iterator hitSize = (hitName->second).find(size); + if (hitSize == (hitName->second).end()) + return NULL; + return hitSize->second; +} + +int cFontManager::GetFontHeight(const char *name, int height, int charWidth) { + FT_Library library; + FT_Face face; + cString fontFileName = cFont::GetFontFileName(name); + + int descender = 0; + int y_ppem = 0; + int error = FT_Init_FreeType(&library); + if (error) return 0; + error = FT_New_Face(library, fontFileName, 0, &face); + if (error) return 0; + error = FT_Set_Char_Size(face, charWidth * 64, height * 64, 0, 0); + if (error) return 0; + + descender = face->size->metrics.descender/64; + y_ppem = face->size->metrics.y_ppem; + int realHeight = y_ppem + descender; + + FT_Done_Face(face); + FT_Done_FreeType(library); + + return realHeight; +} |