diff options
Diffstat (limited to 'src/ports/SkFontHost_fontconfig.cpp')
| -rw-r--r-- | src/ports/SkFontHost_fontconfig.cpp | 261 |
1 files changed, 8 insertions, 253 deletions
diff --git a/src/ports/SkFontHost_fontconfig.cpp b/src/ports/SkFontHost_fontconfig.cpp index f55d9bff63..208efa2c2b 100644 --- a/src/ports/SkFontHost_fontconfig.cpp +++ b/src/ports/SkFontHost_fontconfig.cpp @@ -47,6 +47,14 @@ static SkFontConfigInterface* RefFCI() { } } +// export this to SkFontMgr_fontconfig.cpp until this file just goes away. +SkFontConfigInterface* SkFontHost_fontconfig_ref_global(); +SkFontConfigInterface* SkFontHost_fontconfig_ref_global() { + return RefFCI(); +} + +/////////////////////////////////////////////////////////////////////////////// + class FontConfigTypeface : public SkTypeface_FreeType { SkFontConfigInterface::FontIdentity fIdentity; SkString fFamilyName; @@ -225,256 +233,3 @@ void FontConfigTypeface::onGetFontDescriptor(SkFontDescriptor* desc, /////////////////////////////////////////////////////////////////////////////// -// look for the last substring after a '/' and return that, or return null. -static const char* find_just_name(const char* str) { - const char* last = strrchr(str, '/'); - return last ? last + 1 : NULL; -} - -static bool is_lower(char c) { - return c >= 'a' && c <= 'z'; -} - -#include "SkFontMgr.h" -#include <fontconfig/fontconfig.h> -#include <unistd.h> - -static int get_int(FcPattern* pattern, const char field[]) { - int value; - if (FcPatternGetInteger(pattern, field, 0, &value) != FcResultMatch) { - value = SK_MinS32; - } - return value; -} - -static const char* get_name(FcPattern* pattern, const char field[]) { - const char* name; - if (FcPatternGetString(pattern, field, 0, (FcChar8**)&name) != FcResultMatch) { - name = ""; - } - return name; -} - -static bool valid_pattern(FcPattern* pattern) { - FcBool is_scalable; - if (FcPatternGetBool(pattern, FC_SCALABLE, 0, &is_scalable) != FcResultMatch || !is_scalable) { - return false; - } - - // fontconfig can also return fonts which are unreadable - const char* c_filename = get_name(pattern, FC_FILE); - if (0 == *c_filename) { - return false; - } - if (access(c_filename, R_OK) != 0) { - return false; - } - return true; -} - -static bool match_name(FcPattern* pattern, const char family_name[]) { - return !strcasecmp(family_name, get_name(pattern, FC_FAMILY)); -} - -static FcPattern** MatchFont(FcFontSet* font_set, - const char post_config_family[], - int* count) { - // Older versions of fontconfig have a bug where they cannot select - // only scalable fonts so we have to manually filter the results. - - FcPattern** iter = font_set->fonts; - FcPattern** stop = iter + font_set->nfont; - // find the first good match - for (; iter < stop; ++iter) { - if (valid_pattern(*iter)) { - break; - } - } - - if (iter == stop || !match_name(*iter, post_config_family)) { - return NULL; - } - - FcPattern** firstIter = iter++; - for (; iter < stop; ++iter) { - if (!valid_pattern(*iter) || !match_name(*iter, post_config_family)) { - break; - } - } - - *count = iter - firstIter; - return firstIter; -} - -class SkFontStyleSet_FC : public SkFontStyleSet { -public: - SkFontStyleSet_FC(FcPattern** matches, int count); - virtual ~SkFontStyleSet_FC(); - - virtual int count() SK_OVERRIDE { return fRecCount; } - virtual void getStyle(int index, SkFontStyle*, SkString* style) SK_OVERRIDE; - virtual SkTypeface* createTypeface(int index) SK_OVERRIDE; - virtual SkTypeface* matchStyle(const SkFontStyle& pattern) SK_OVERRIDE; - -private: - struct Rec { - SkString fStyleName; - SkString fFileName; - SkFontStyle fStyle; - }; - Rec* fRecs; - int fRecCount; -}; - -static int map_range(int value, - int old_min, int old_max, int new_min, int new_max) { - SkASSERT(old_min < old_max); - SkASSERT(new_min < new_max); - return new_min + SkMulDiv(value - old_min, - new_max - new_min, old_max - old_min); -} - -static SkFontStyle make_fontconfig_style(FcPattern* match) { - int weight = get_int(match, FC_WEIGHT); - int width = get_int(match, FC_WIDTH); - int slant = get_int(match, FC_SLANT); -// SkDebugf("old weight %d new weight %d\n", weight, map_range(weight, 0, 80, 0, 400)); - - // fontconfig weight seems to be 0..200 or so, so we remap it here - weight = map_range(weight, 0, 80, 0, 400); - width = map_range(width, 0, 200, 0, 9); - return SkFontStyle(weight, width, slant > 0 ? SkFontStyle::kItalic_Slant - : SkFontStyle::kUpright_Slant); -} - -SkFontStyleSet_FC::SkFontStyleSet_FC(FcPattern** matches, int count) { - fRecCount = count; - fRecs = SkNEW_ARRAY(Rec, count); - for (int i = 0; i < count; ++i) { - fRecs[i].fStyleName.set(get_name(matches[i], FC_STYLE)); - fRecs[i].fFileName.set(get_name(matches[i], FC_FILE)); - fRecs[i].fStyle = make_fontconfig_style(matches[i]); - } -} - -SkFontStyleSet_FC::~SkFontStyleSet_FC() { - SkDELETE_ARRAY(fRecs); -} - -void SkFontStyleSet_FC::getStyle(int index, SkFontStyle* style, - SkString* styleName) { - SkASSERT((unsigned)index < (unsigned)fRecCount); - if (style) { - *style = fRecs[index].fStyle; - } - if (styleName) { - *styleName = fRecs[index].fStyleName; - } -} - -SkTypeface* SkFontStyleSet_FC::createTypeface(int index) { - return NULL; -} - -SkTypeface* SkFontStyleSet_FC::matchStyle(const SkFontStyle& pattern) { - return NULL; -} - -class SkFontMgr_fontconfig : public SkFontMgr { - SkAutoTUnref<SkFontConfigInterface> fFCI; - SkDataTable* fFamilyNames; - - void init() { - if (!fFamilyNames) { - fFamilyNames = fFCI->getFamilyNames(); - } - } - -public: - SkFontMgr_fontconfig(SkFontConfigInterface* fci) - : fFCI(fci) - , fFamilyNames(NULL) {} - - virtual ~SkFontMgr_fontconfig() { - SkSafeUnref(fFamilyNames); - } - -protected: - virtual int onCountFamilies() { - this->init(); - return fFamilyNames->count(); - } - - virtual void onGetFamilyName(int index, SkString* familyName) { - this->init(); - familyName->set(fFamilyNames->atStr(index)); - } - - virtual SkFontStyleSet* onCreateStyleSet(int index) { - this->init(); - return this->onMatchFamily(fFamilyNames->atStr(index)); - } - - virtual SkFontStyleSet* onMatchFamily(const char familyName[]) { - this->init(); - - FcPattern* pattern = FcPatternCreate(); - - FcPatternAddString(pattern, FC_FAMILY, (FcChar8*)familyName); -#if 0 - FcPatternAddBool(pattern, FC_SCALABLE, FcTrue); -#endif - FcConfigSubstitute(NULL, pattern, FcMatchPattern); - FcDefaultSubstitute(pattern); - - const char* post_config_family = get_name(pattern, FC_FAMILY); - - FcResult result; - FcFontSet* font_set = FcFontSort(0, pattern, 0, 0, &result); - if (!font_set) { - FcPatternDestroy(pattern); - return NULL; - } - - int count; - FcPattern** match = MatchFont(font_set, post_config_family, &count); - if (!match) { - FcPatternDestroy(pattern); - FcFontSetDestroy(font_set); - return NULL; - } - - FcPatternDestroy(pattern); - - SkTDArray<FcPattern*> trimmedMatches; - for (int i = 0; i < count; ++i) { - const char* justName = find_just_name(get_name(match[i], FC_FILE)); - if (!is_lower(*justName)) { - *trimmedMatches.append() = match[i]; - } - } - - SkFontStyleSet_FC* sset = SkNEW_ARGS(SkFontStyleSet_FC, - (trimmedMatches.begin(), - trimmedMatches.count())); - return sset; - } - - virtual SkTypeface* onMatchFamilyStyle(const char familyName[], - const SkFontStyle&) { return NULL; } - virtual SkTypeface* onMatchFaceStyle(const SkTypeface*, - const SkFontStyle&) { return NULL; } - - virtual SkTypeface* onCreateFromData(SkData*, int ttcIndex) { return NULL; } - virtual SkTypeface* onCreateFromStream(SkStream*, int ttcIndex) { - return NULL; - } - virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) { - return NULL; - } -}; - -SkFontMgr* SkFontMgr::Factory() { - SkFontConfigInterface* fci = RefFCI(); - return fci ? SkNEW_ARGS(SkFontMgr_fontconfig, (fci)) : NULL; -} |