diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/core/SkFontHost.cpp | 59 | ||||
| -rwxr-xr-x | src/ports/SkFontHost_mac.cpp | 78 |
2 files changed, 108 insertions, 29 deletions
diff --git a/src/core/SkFontHost.cpp b/src/core/SkFontHost.cpp index d784978eb1..a3df04d79b 100644 --- a/src/core/SkFontHost.cpp +++ b/src/core/SkFontHost.cpp @@ -50,8 +50,45 @@ void SkFontHost::SetSubpixelOrder(LCDOrder order) { /////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////// +#include "SkFontStyle.h" + +SkFontStyle::SkFontStyle() { + fUnion.fU32 = 0; + fUnion.fR.fWeight = kNormal_Weight; + fUnion.fR.fWidth = kNormal_Width; + fUnion.fR.fSlant = kUpright_Slant; +} + +SkFontStyle::SkFontStyle(int weight, int width, Slant slant) { + fUnion.fU32 = 0; + fUnion.fR.fWeight = SkPin32(weight, kThin_Weight, kBlack_Weight); + fUnion.fR.fWidth = SkPin32(width, kUltraCondensed_Width, kUltaExpanded_Width); + fUnion.fR.fSlant = SkPin32(slant, kUpright_Slant, kItalic_Slant); +} + #include "SkFontMgr.h" +class SkEmptyFontStyleSet : public SkFontStyleSet { +public: + virtual int count() SK_OVERRIDE { return 0; } + virtual void getStyle(int, SkFontStyle*, SkString*) SK_OVERRIDE { + SkASSERT(!"SkFontStyleSet::getStyle called on empty set"); + } + virtual SkTypeface* createTypeface(int index) SK_OVERRIDE { + SkASSERT(!"SkFontStyleSet::createTypeface called on empty set"); + return NULL; + } + virtual SkTypeface* matchStyle(const SkFontStyle&) SK_OVERRIDE { + return NULL; + } +}; + +SkFontStyleSet* SkFontStyleSet::CreateEmpty() { + return SkNEW(SkEmptyFontStyleSet); +} + +/////////////////////////////////////////////////////////////////////////////// + class SkEmptyFontMgr : public SkFontMgr { protected: virtual int onCountFamilies() SK_OVERRIDE { @@ -64,6 +101,10 @@ protected: SkASSERT(!"onCreateStyleSet called with bad index"); return NULL; } + virtual SkFontStyleSet* onMatchFamily(const char[]) SK_OVERRIDE { + return SkFontStyleSet::CreateEmpty(); + } + virtual SkTypeface* onMatchFamilyStyle(const char[], const SkFontStyle&) SK_OVERRIDE { return NULL; @@ -83,20 +124,6 @@ protected: } }; -SkFontStyle::SkFontStyle() { - fUnion.fU32 = 0; - fUnion.fR.fWeight = kNormal_Weight; - fUnion.fR.fWidth = kNormal_Width; - fUnion.fR.fSlant = kUpright_Slant; -} - -SkFontStyle::SkFontStyle(int weight, int width, Slant slant) { - fUnion.fU32 = 0; - fUnion.fR.fWeight = SkPin32(weight, kThin_Weight, kBlack_Weight); - fUnion.fR.fWidth = SkPin32(width, kUltraCondensed_Width, kUltaExpanded_Width); - fUnion.fR.fSlant = SkPin32(slant, kUpright_Slant, kItalic_Slant); -} - int SkFontMgr::countFamilies() { return this->onCountFamilies(); } @@ -109,6 +136,10 @@ SkFontStyleSet* SkFontMgr::createStyleSet(int index) { return this->onCreateStyleSet(index); } +SkFontStyleSet* SkFontMgr::matchFamily(const char familyName[]) { + return this->onMatchFamily(familyName); +} + SkTypeface* SkFontMgr::matchFamilyStyle(const char familyName[], const SkFontStyle& fs) { return this->onMatchFamilyStyle(familyName, fs); diff --git a/src/ports/SkFontHost_mac.cpp b/src/ports/SkFontHost_mac.cpp index 79e4bde01e..309dabc891 100755 --- a/src/ports/SkFontHost_mac.cpp +++ b/src/ports/SkFontHost_mac.cpp @@ -96,6 +96,10 @@ private: CFRef fCFRef; }; +static CFStringRef make_CFString(const char str[]) { + return CFStringCreateWithCString(NULL, str, kCFStringEncodingUTF8); +} + template<typename T> class AutoCGTable : SkNoncopyable { public: AutoCGTable(CGFontRef font) @@ -498,8 +502,7 @@ static SkTypeface* NewFromName(const char familyName[], SkTypeface::Style theSty } // Create the font info - AutoCFRelease<CFStringRef> cfFontName( - CFStringCreateWithCString(NULL, familyName, kCFStringEncodingUTF8)); + AutoCFRelease<CFStringRef> cfFontName(make_CFString(familyName)); AutoCFRelease<CFNumberRef> cfFontTraits( CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &ctFontTraits)); @@ -1913,6 +1916,18 @@ static int unit_width_to_fontstyle(float unit) { return sk_float_round2int(value); } +static inline int sqr(int value) { + SkASSERT(SkAbs32(value) < 0x7FFF); // check for overflow + return value * value; +} + +// We normalize each axis (weight, width, italic) to be base-900 +static int compute_metric(const SkFontStyle& a, const SkFontStyle& b) { + return sqr(a.weight() - b.weight()) + + sqr((a.width() - b.width()) * 100) + + sqr((a.isItalic() != b.isItalic()) * 900); +} + static SkFontStyle desc2fontstyle(CTFontDescriptorRef desc) { AutoCFRelease<CFDictionaryRef> dict( (CFDictionaryRef)CTFontDescriptorCopyAttribute(desc, @@ -2026,10 +2041,36 @@ public: return createFromDesc(fFamilyName, desc); } + virtual SkTypeface* matchStyle(const SkFontStyle& pattern) SK_OVERRIDE { + if (0 == fCount) { + return NULL; + } + return createFromDesc(fFamilyName, findMatchingDesc(pattern)); + } + private: CFArrayRef fArray; CFStringRef fFamilyName; int fCount; + + CTFontDescriptorRef findMatchingDesc(const SkFontStyle& pattern) const { + int bestMetric = SK_MaxS32; + CTFontDescriptorRef bestDesc = NULL; + + for (int i = 0; i < fCount; ++i) { + CTFontDescriptorRef desc = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fArray, i); + int metric = compute_metric(pattern, desc2fontstyle(desc)); + if (0 == metric) { + return desc; + } + if (metric < bestMetric) { + bestMetric = metric; + bestDesc = desc; + } + } + SkASSERT(bestDesc); + return bestDesc; + } }; class SkFontMgr_Mac : public SkFontMgr { @@ -2048,6 +2089,19 @@ class SkFontMgr_Mac : public SkFontMgr { } } + static SkFontStyleSet* CreateSet(CFStringRef cfFamilyName) { + AutoCFRelease<CFMutableDictionaryRef> cfAttr( + CFDictionaryCreateMutable(kCFAllocatorDefault, 0, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks)); + + CFDictionaryAddValue(cfAttr, kCTFontFamilyNameAttribute, cfFamilyName); + + AutoCFRelease<CTFontDescriptorRef> desc( + CTFontDescriptorCreateWithAttributes(cfAttr)); + return SkNEW_ARGS(SkFontStyleSet_Mac, (cfFamilyName, desc)); + } + public: SkFontMgr_Mac() : fCount(0), fNames(NULL) {} @@ -2075,20 +2129,14 @@ protected: if ((unsigned)index >= (unsigned)fCount) { return NULL; } - - AutoCFRelease<CFMutableDictionaryRef> cfAttr( - CFDictionaryCreateMutable(kCFAllocatorDefault, 0, - &kCFTypeDictionaryKeyCallBacks, - &kCFTypeDictionaryValueCallBacks)); - - CFDictionaryAddValue(cfAttr, kCTFontFamilyNameAttribute, - this->stringAt(index)); - - AutoCFRelease<CTFontDescriptorRef> desc( - CTFontDescriptorCreateWithAttributes(cfAttr)); - return SkNEW_ARGS(SkFontStyleSet_Mac, (this->stringAt(index), desc)); + return CreateSet(this->stringAt(index)); } - + + virtual SkFontStyleSet* onMatchFamily(const char familyName[]) SK_OVERRIDE { + AutoCFRelease<CFStringRef> cfName(make_CFString(familyName)); + return CreateSet(cfName); + } + virtual SkTypeface* onMatchFamilyStyle(const char familyName[], const SkFontStyle&) SK_OVERRIDE { return NULL; |