/* ============================================================================== This file is part of the JUCE library. Copyright (c) 2013 - Raw Material Software Ltd. Permission is granted to use this software under the terms of either: a) the GPL v2 (or any later version) b) the Affero GPL v3 Details of these licenses can be found at: www.gnu.org/licenses JUCE 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. ------------------------------------------------------------------------------ To release a closed-source product which uses JUCE, commercial licenses are available: visit www.juce.com for more information. ============================================================================== */ #if (! defined (JUCE_CORETEXT_AVAILABLE)) \ && (JUCE_IOS || (JUCE_MAC && MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4)) #define JUCE_CORETEXT_AVAILABLE 1 #endif const float referenceFontSize = 1024.0f; #if JUCE_CORETEXT_AVAILABLE #if JUCE_MAC && MAC_OS_X_VERSION_MAX_ALLOWED == MAC_OS_X_VERSION_10_5 extern "C" { void CTRunGetAdvances (CTRunRef, CFRange, CGSize buffer[]); const CGSize* CTRunGetAdvancesPtr (CTRunRef); } #endif static CTFontRef getCTFontFromTypeface (const Font& f); namespace CoreTextTypeLayout { static String findBestAvailableStyle (const Font& font, CGAffineTransform& requiredTransform) { const StringArray availableStyles (Font::findAllTypefaceStyles (font.getTypefaceName())); const String style (font.getTypefaceStyle()); if (! availableStyles.contains (style)) { if (font.isItalic()) // Fake-up an italic font if there isn't a real one. requiredTransform = CGAffineTransformMake (1.0f, 0, 0.25f, 1.0f, 0, 0); return availableStyles[0]; } return style; } // Workaround for Apple bug in CTFontCreateWithFontDescriptor in Garageband/Logic on 10.6 #if JUCE_MAC && ((! defined (MAC_OS_X_VERSION_10_7)) || MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7) static CTFontRef getFontWithTrait (CTFontRef ctFontRef, CTFontSymbolicTraits trait) { if (CTFontRef newFont = CTFontCreateCopyWithSymbolicTraits (ctFontRef, 0.0f, nullptr, trait, trait)) { CFRelease (ctFontRef); return newFont; } return ctFontRef; } static CTFontRef useStyleFallbackIfNecessary (CTFontRef ctFontRef, CFStringRef cfFontFamily, const float fontSizePoints, const Font& font) { CFStringRef cfActualFontFamily = (CFStringRef) CTFontCopyAttribute (ctFontRef, kCTFontFamilyNameAttribute); if (CFStringCompare (cfFontFamily, cfActualFontFamily, 0) != kCFCompareEqualTo) { CFRelease (ctFontRef); ctFontRef = CTFontCreateWithName (cfFontFamily, fontSizePoints, nullptr); if (font.isItalic()) ctFontRef = getFontWithTrait (ctFontRef, kCTFontItalicTrait); if (font.isBold()) ctFontRef = getFontWithTrait (ctFontRef, kCTFontBoldTrait); } CFRelease (cfActualFontFamily); return ctFontRef; } #endif static float getFontTotalHeight (CTFontRef font) { return std::abs ((float) CTFontGetAscent (font)) + std::abs ((float) CTFontGetDescent (font)); } static float getHeightToPointsFactor (CTFontRef font) { return referenceFontSize / getFontTotalHeight (font); } static CTFontRef getFontWithPointSize (CTFontRef font, float size) { CTFontRef newFont = CTFontCreateCopyWithAttributes (font, size, nullptr, nullptr); CFRelease (font); return newFont; } static CTFontRef createCTFont (const Font& font, const float fontSizePoints, CGAffineTransform& transformRequired) { CFStringRef cfFontFamily = FontStyleHelpers::getConcreteFamilyName (font).toCFString(); CFStringRef cfFontStyle = findBestAvailableStyle (font, transformRequired).toCFString(); CFStringRef keys[] = { kCTFontFamilyNameAttribute, kCTFontStyleNameAttribute }; CFTypeRef values[] = { cfFontFamily, cfFontStyle }; CFDictionaryRef fontDescAttributes = CFDictionaryCreate (nullptr, (const void**) &keys, (const void**) &values, numElementsInArray (keys), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFRelease (cfFontStyle); CTFontDescriptorRef ctFontDescRef = CTFontDescriptorCreateWithAttributes (fontDescAttributes); CFRelease (fontDescAttributes); CTFontRef ctFontRef = CTFontCreateWithFontDescriptor (ctFontDescRef, fontSizePoints, nullptr); CFRelease (ctFontDescRef); #if JUCE_MAC && ((! defined (MAC_OS_X_VERSION_10_7)) || MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7) ctFontRef = useStyleFallbackIfNecessary (ctFontRef, cfFontFamily, fontSizePoints, font); #endif CFRelease (cfFontFamily); return ctFontRef; } //============================================================================== struct Advances { Advances (CTRunRef run, const CFIndex numGlyphs) : advances (CTRunGetAdvancesPtr (run)) { if (advances == nullptr) { local.malloc ((size_t) numGlyphs); CTRunGetAdvances (run, CFRangeMake (0, 0), local); advances = local; } } const CGSize* advances; HeapBlock local; }; struct Glyphs { Glyphs (CTRunRef run, const size_t numGlyphs) : glyphs (CTRunGetGlyphsPtr (run)) { if (glyphs == nullptr) { local.malloc (numGlyphs); CTRunGetGlyphs (run, CFRangeMake (0, 0), local); glyphs = local; } } const CGGlyph* glyphs; HeapBlock local; }; struct Positions { Positions (CTRunRef run, const size_t numGlyphs) : points (CTRunGetPositionsPtr (run)) { if (points == nullptr) { local.malloc (numGlyphs); CTRunGetPositions (run, CFRangeMake (0, 0), local); points = local; } } const CGPoint* points; HeapBlock local; }; static CTFontRef getOrCreateFont (const Font& f) { if (CTFontRef ctf = getCTFontFromTypeface (f)) { CFRetain (ctf); return ctf; } CGAffineTransform transform; return createCTFont (f, referenceFontSize, transform); } //============================================================================== static CFAttributedStringRef createCFAttributedString (const AttributedString& text) { #if JUCE_IOS CGColorSpaceRef rgbColourSpace = CGColorSpaceCreateDeviceRGB(); #endif CFStringRef cfText = text.getText().toCFString(); CFMutableAttributedStringRef attribString = CFAttributedStringCreateMutable (kCFAllocatorDefault, 0); CFAttributedStringReplaceString (attribString, CFRangeMake(0, 0), cfText); CFRelease (cfText); const int numCharacterAttributes = text.getNumAttributes(); for (int i = 0; i < numCharacterAttributes; ++i) { const AttributedString::Attribute* const attr = text.getAttribute (i); if (attr->range.getStart() > CFAttributedStringGetLength (attribString)) continue; Range range (attr->range); range.setEnd (jmin (range.getEnd(), (int) CFAttributedStringGetLength (attribString))); if (const Font* const f = attr->getFont()) { if (CTFontRef ctFontRef = getOrCreateFont (*f)) { ctFontRef = getFontWithPointSize (ctFontRef, f->getHeight() * getHeightToPointsFactor (ctFontRef)); CFAttributedStringSetAttribute (attribString, CFRangeMake (range.getStart(), range.getLength()), kCTFontAttributeName, ctFontRef); CFRelease (ctFontRef); } } if (const Colour* const col = attr->getColour()) { #if JUCE_IOS const CGFloat components[] = { col->getFloatRed(), col->getFloatGreen(), col->getFloatBlue(), col->getFloatAlpha() }; CGColorRef colour = CGColorCreate (rgbColourSpace, components); #else CGColorRef colour = CGColorCreateGenericRGB (col->getFloatRed(), col->getFloatGreen(), col->getFloatBlue(), col->getFloatAlpha()); #endif CFAttributedStringSetAttribute (attribString, CFRangeMake (range.getStart(), range.getLength()), kCTForegroundColorAttributeName, colour); CGColorRelease (colour); } } // Paragraph Attributes CTTextAlignment ctTextAlignment = kCTLeftTextAlignment; CTLineBreakMode ctLineBreakMode = kCTLineBreakByWordWrapping; const CGFloat ctLineSpacing = text.getLineSpacing(); switch (text.getJustification().getOnlyHorizontalFlags()) { case Justification::left: break; case Justification::right: ctTextAlignment = kCTRightTextAlignment; break; case Justification::horizontallyCentred: ctTextAlignment = kCTCenterTextAlignment; break; case Justification::horizontallyJustified: ctTextAlignment = kCTJustifiedTextAlignment; break; default: jassertfalse; break; // Illegal justification flags } switch (text.getWordWrap()) { case AttributedString::byWord: break; case AttributedString::none: ctLineBreakMode = kCTLineBreakByClipping; break; case AttributedString::byChar: ctLineBreakMode = kCTLineBreakByCharWrapping; break; default: break; } CTParagraphStyleSetting settings[] = { { kCTParagraphStyleSpecifierAlignment, sizeof (CTTextAlignment), &ctTextAlignment }, { kCTParagraphStyleSpecifierLineBreakMode, sizeof (CTLineBreakMode), &ctLineBreakMode }, #if defined (MAC_OS_X_VERSION_10_7) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7 { kCTParagraphStyleSpecifierLineSpacingAdjustment, sizeof (CGFloat), &ctLineSpacing } #else { kCTParagraphStyleSpecifierLineSpacing, sizeof (CGFloat), &ctLineSpacing } #endif }; CTParagraphStyleRef ctParagraphStyleRef = CTParagraphStyleCreate (settings, (size_t) numElementsInArray (settings)); CFAttributedStringSetAttribute (attribString, CFRangeMake (0, CFAttributedStringGetLength (attribString)), kCTParagraphStyleAttributeName, ctParagraphStyleRef); CFRelease (ctParagraphStyleRef); #if JUCE_IOS CGColorSpaceRelease (rgbColourSpace); #endif return attribString; } static void drawToCGContext (const AttributedString& text, const Rectangle& area, const CGContextRef& context, const float flipHeight) { CFAttributedStringRef attribString = CoreTextTypeLayout::createCFAttributedString (text); CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString (attribString); CFRelease (attribString); CGMutablePathRef path = CGPathCreateMutable(); CGRect bounds = CGRectMake ((CGFloat) area.getX(), flipHeight - (CGFloat) area.getBottom(), (CGFloat) area.getWidth(), (CGFloat) area.getHeight()); CGPathAddRect (path, nullptr, bounds); CTFrameRef frame = CTFramesetterCreateFrame (framesetter, CFRangeMake (0, 0), path, nullptr); CFRelease (framesetter); CGPathRelease (path); CTFrameDraw (frame, context); CFRelease (frame); } static void createLayout (TextLayout& glyphLayout, const AttributedString& text) { CFAttributedStringRef attribString = CoreTextTypeLayout::createCFAttributedString (text); CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString (attribString); CFRelease (attribString); CGMutablePathRef path = CGPathCreateMutable(); const CGRect bounds = CGRectMake (0, 0, glyphLayout.getWidth(), 1.0e6f); CGPathAddRect (path, nullptr, bounds); CTFrameRef frame = CTFramesetterCreateFrame (framesetter, CFRangeMake(0, 0), path, nullptr); CFRelease (framesetter); CGPathRelease (path); CFArrayRef lines = CTFrameGetLines (frame); const CFIndex numLines = CFArrayGetCount (lines); glyphLayout.ensureStorageAllocated ((int) numLines); for (CFIndex i = 0; i < numLines; ++i) { CTLineRef line = (CTLineRef) CFArrayGetValueAtIndex (lines, i); CFArrayRef runs = CTLineGetGlyphRuns (line); const CFIndex numRuns = CFArrayGetCount (runs); const CFRange cfrlineStringRange = CTLineGetStringRange (line); const CFIndex lineStringEnd = cfrlineStringRange.location + cfrlineStringRange.length - 1; const Range lineStringRange ((int) cfrlineStringRange.location, (int) lineStringEnd); CGPoint cgpLineOrigin; CTFrameGetLineOrigins (frame, CFRangeMake(i, 1), &cgpLineOrigin); Point lineOrigin ((float) cgpLineOrigin.x, bounds.size.height - (float) cgpLineOrigin.y); CGFloat ascent, descent, leading; CTLineGetTypographicBounds (line, &ascent, &descent, &leading); TextLayout::Line* const glyphLine = new TextLayout::Line (lineStringRange, lineOrigin, (float) ascent, (float) descent, (float) leading, (int) numRuns); glyphLayout.addLine (glyphLine); for (CFIndex j = 0; j < numRuns; ++j) { CTRunRef run = (CTRunRef) CFArrayGetValueAtIndex (runs, j); const CFIndex numGlyphs = CTRunGetGlyphCount (run); const CFRange runStringRange = CTRunGetStringRange (run); TextLayout::Run* const glyphRun = new TextLayout::Run (Range ((int) runStringRange.location, (int) (runStringRange.location + runStringRange.length - 1)), (int) numGlyphs); glyphLine->runs.add (glyphRun); CFDictionaryRef runAttributes = CTRunGetAttributes (run); CTFontRef ctRunFont; if (CFDictionaryGetValueIfPresent (runAttributes, kCTFontAttributeName, (const void **) &ctRunFont)) { CFStringRef cfsFontName = CTFontCopyPostScriptName (ctRunFont); CTFontRef ctFontRef = CTFontCreateWithName (cfsFontName, referenceFontSize, nullptr); CFRelease (cfsFontName); const float fontHeightToPointsFactor = getHeightToPointsFactor (ctFontRef); CFRelease (ctFontRef); CFStringRef cfsFontFamily = (CFStringRef) CTFontCopyAttribute (ctRunFont, kCTFontFamilyNameAttribute); CFStringRef cfsFontStyle = (CFStringRef) CTFontCopyAttribute (ctRunFont, kCTFontStyleNameAttribute); glyphRun->font = Font (String::fromCFString (cfsFontFamily), String::fromCFString (cfsFontStyle), CTFontGetSize (ctRunFont) / fontHeightToPointsFactor); CFRelease (cfsFontStyle); CFRelease (cfsFontFamily); } CGColorRef cgRunColor; if (CFDictionaryGetValueIfPresent (runAttributes, kCTForegroundColorAttributeName, (const void**) &cgRunColor) && CGColorGetNumberOfComponents (cgRunColor) == 4) { const CGFloat* const components = CGColorGetComponents (cgRunColor); glyphRun->colour = Colour::fromFloatRGBA (components[0], components[1], components[2], components[3]); } const CoreTextTypeLayout::Glyphs glyphs (run, (size_t) numGlyphs); const CoreTextTypeLayout::Advances advances (run, numGlyphs); const CoreTextTypeLayout::Positions positions (run, (size_t) numGlyphs); for (CFIndex k = 0; k < numGlyphs; ++k) glyphRun->glyphs.add (TextLayout::Glyph (glyphs.glyphs[k], Point (positions.points[k].x, positions.points[k].y), advances.advances[k].width)); } } CFRelease (frame); } } //============================================================================== class OSXTypeface : public Typeface { public: OSXTypeface (const Font& font) : Typeface (font.getTypefaceName(), font.getTypefaceStyle()), fontRef (nullptr), ctFontRef (nullptr), fontHeightToPointsFactor (1.0f), renderingTransform (CGAffineTransformIdentity), attributedStringAtts (nullptr), ascent (0.0f), unitsToHeightScaleFactor (0.0f) { ctFontRef = CoreTextTypeLayout::createCTFont (font, referenceFontSize, renderingTransform); if (ctFontRef != nullptr) { const float ctAscent = std::abs ((float) CTFontGetAscent (ctFontRef)); const float ctDescent = std::abs ((float) CTFontGetDescent (ctFontRef)); const float ctTotalHeight = ctAscent + ctDescent; ascent = ctAscent / ctTotalHeight; unitsToHeightScaleFactor = 1.0f / ctTotalHeight; pathTransform = AffineTransform::identity.scale (unitsToHeightScaleFactor); fontRef = CTFontCopyGraphicsFont (ctFontRef, nullptr); fontHeightToPointsFactor = referenceFontSize / ctTotalHeight; const short zero = 0; CFNumberRef numberRef = CFNumberCreate (0, kCFNumberShortType, &zero); CFStringRef keys[] = { kCTFontAttributeName, kCTLigatureAttributeName }; CFTypeRef values[] = { ctFontRef, numberRef }; attributedStringAtts = CFDictionaryCreate (nullptr, (const void**) &keys, (const void**) &values, numElementsInArray (keys), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFRelease (numberRef); } } ~OSXTypeface() { if (attributedStringAtts != nullptr) CFRelease (attributedStringAtts); if (fontRef != nullptr) CGFontRelease (fontRef); if (ctFontRef != nullptr) CFRelease (ctFontRef); } float getAscent() const { return ascent; } float getDescent() const { return 1.0f - ascent; } float getHeightToPointsFactor() const { return fontHeightToPointsFactor; } float getStringWidth (const String& text) { float x = 0; if (ctFontRef != nullptr && text.isNotEmpty()) { CFStringRef cfText = text.toCFString(); CFAttributedStringRef attribString = CFAttributedStringCreate (kCFAllocatorDefault, cfText, attributedStringAtts); CFRelease (cfText); CTLineRef line = CTLineCreateWithAttributedString (attribString); CFArrayRef runArray = CTLineGetGlyphRuns (line); for (CFIndex i = 0; i < CFArrayGetCount (runArray); ++i) { CTRunRef run = (CTRunRef) CFArrayGetValueAtIndex (runArray, i); CFIndex length = CTRunGetGlyphCount (run); const CoreTextTypeLayout::Advances advances (run, length); for (int j = 0; j < length; ++j) x += (float) advances.advances[j].width; } CFRelease (line); CFRelease (attribString); x *= unitsToHeightScaleFactor; } return x; } void getGlyphPositions (const String& text, Array & resultGlyphs, Array & xOffsets) { xOffsets.add (0); if (ctFontRef != nullptr && text.isNotEmpty()) { float x = 0; CFStringRef cfText = text.toCFString(); CFAttributedStringRef attribString = CFAttributedStringCreate (kCFAllocatorDefault, cfText, attributedStringAtts); CFRelease (cfText); CTLineRef line = CTLineCreateWithAttributedString (attribString); CFArrayRef runArray = CTLineGetGlyphRuns (line); for (CFIndex i = 0; i < CFArrayGetCount (runArray); ++i) { CTRunRef run = (CTRunRef) CFArrayGetValueAtIndex (runArray, i); CFIndex length = CTRunGetGlyphCount (run); const CoreTextTypeLayout::Advances advances (run, length); const CoreTextTypeLayout::Glyphs glyphs (run, (size_t) length); for (int j = 0; j < length; ++j) { x += (float) advances.advances[j].width; xOffsets.add (x * unitsToHeightScaleFactor); resultGlyphs.add (glyphs.glyphs[j]); } } CFRelease (line); CFRelease (attribString); } } EdgeTable* getEdgeTableForGlyph (int glyphNumber, const AffineTransform& transform) { Path path; if (getOutlineForGlyph (glyphNumber, path) && ! path.isEmpty()) return new EdgeTable (path.getBoundsTransformed (transform).getSmallestIntegerContainer().expanded (1, 0), path, transform); return nullptr; } bool getOutlineForGlyph (int glyphNumber, Path& path) { jassert (path.isEmpty()); // we might need to apply a transform to the path, so this must be empty CGPathRef pathRef = CTFontCreatePathForGlyph (ctFontRef, (CGGlyph) glyphNumber, &renderingTransform); if (pathRef == 0) return false; CGPathApply (pathRef, &path, pathApplier); CFRelease (pathRef); if (! pathTransform.isIdentity()) path.applyTransform (pathTransform); return true; } //============================================================================== CGFontRef fontRef; CTFontRef ctFontRef; float fontHeightToPointsFactor; CGAffineTransform renderingTransform; private: CFDictionaryRef attributedStringAtts; float ascent, unitsToHeightScaleFactor; AffineTransform pathTransform; static void pathApplier (void* info, const CGPathElement* const element) { Path& path = *static_cast (info); const CGPoint* const p = element->points; switch (element->type) { case kCGPathElementMoveToPoint: path.startNewSubPath ((float) p[0].x, (float) -p[0].y); break; case kCGPathElementAddLineToPoint: path.lineTo ((float) p[0].x, (float) -p[0].y); break; case kCGPathElementAddQuadCurveToPoint: path.quadraticTo ((float) p[0].x, (float) -p[0].y, (float) p[1].x, (float) -p[1].y); break; case kCGPathElementAddCurveToPoint: path.cubicTo ((float) p[0].x, (float) -p[0].y, (float) p[1].x, (float) -p[1].y, (float) p[2].x, (float) -p[2].y); break; case kCGPathElementCloseSubpath: path.closeSubPath(); break; default: jassertfalse; break; } } JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OSXTypeface) }; CTFontRef getCTFontFromTypeface (const Font& f) { if (OSXTypeface* tf = dynamic_cast (f.getTypeface())) return tf->ctFontRef; return 0; } StringArray Font::findAllTypefaceNames() { StringArray names; #if MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_5 && ! JUCE_IOS // CTFontManager only exists on OS X 10.6 and later, it does not exist on iOS CFArrayRef fontFamilyArray = CTFontManagerCopyAvailableFontFamilyNames(); for (CFIndex i = 0; i < CFArrayGetCount (fontFamilyArray); ++i) { const String family (String::fromCFString ((CFStringRef) CFArrayGetValueAtIndex (fontFamilyArray, i))); if (! family.startsWithChar ('.')) // ignore fonts that start with a '.' names.addIfNotAlreadyThere (family); } CFRelease (fontFamilyArray); #else CTFontCollectionRef fontCollectionRef = CTFontCollectionCreateFromAvailableFonts (nullptr); CFArrayRef fontDescriptorArray = CTFontCollectionCreateMatchingFontDescriptors (fontCollectionRef); CFRelease (fontCollectionRef); for (CFIndex i = 0; i < CFArrayGetCount (fontDescriptorArray); ++i) { CTFontDescriptorRef ctFontDescriptorRef = (CTFontDescriptorRef) CFArrayGetValueAtIndex (fontDescriptorArray, i); CFStringRef cfsFontFamily = (CFStringRef) CTFontDescriptorCopyAttribute (ctFontDescriptorRef, kCTFontFamilyNameAttribute); names.addIfNotAlreadyThere (String::fromCFString (cfsFontFamily)); CFRelease (cfsFontFamily); } CFRelease (fontDescriptorArray); #endif names.sort (true); return names; } StringArray Font::findAllTypefaceStyles (const String& family) { if (FontStyleHelpers::isPlaceholderFamilyName (family)) return findAllTypefaceStyles (FontStyleHelpers::getConcreteFamilyNameFromPlaceholder (family)); StringArray results; CFStringRef cfsFontFamily = family.toCFString(); CFStringRef keys[] = { kCTFontFamilyNameAttribute }; CFTypeRef values[] = { cfsFontFamily }; CFDictionaryRef fontDescAttributes = CFDictionaryCreate (nullptr, (const void**) &keys, (const void**) &values, numElementsInArray (keys), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); CFRelease (cfsFontFamily); CTFontDescriptorRef ctFontDescRef = CTFontDescriptorCreateWithAttributes (fontDescAttributes); CFRelease (fontDescAttributes); CFArrayRef fontFamilyArray = CFArrayCreate(kCFAllocatorDefault, (const void**) &ctFontDescRef, 1, &kCFTypeArrayCallBacks); CFRelease (ctFontDescRef); CTFontCollectionRef fontCollectionRef = CTFontCollectionCreateWithFontDescriptors (fontFamilyArray, nullptr); CFRelease (fontFamilyArray); CFArrayRef fontDescriptorArray = CTFontCollectionCreateMatchingFontDescriptors (fontCollectionRef); CFRelease (fontCollectionRef); if (fontDescriptorArray != nullptr) { for (CFIndex i = 0; i < CFArrayGetCount (fontDescriptorArray); ++i) { CTFontDescriptorRef ctFontDescriptorRef = (CTFontDescriptorRef) CFArrayGetValueAtIndex (fontDescriptorArray, i); CFStringRef cfsFontStyle = (CFStringRef) CTFontDescriptorCopyAttribute (ctFontDescriptorRef, kCTFontStyleNameAttribute); results.add (String::fromCFString (cfsFontStyle)); CFRelease (cfsFontStyle); } CFRelease (fontDescriptorArray); } return results; } #else //============================================================================== // The stuff that follows is a mash-up that supports pre-OSX 10.5 APIs. // (Hopefully all of this can be ditched at some point in the future). //============================================================================== #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5 #define SUPPORT_10_4_FONTS 1 #define NEW_CGFONT_FUNCTIONS_UNAVAILABLE (CGFontCreateWithFontName == 0) #if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5 #define SUPPORT_ONLY_10_4_FONTS 1 #endif } // (juce namespace) @interface NSFont (PrivateHack) - (NSGlyph) _defaultGlyphForChar: (unichar) theChar; @end namespace juce { #endif //============================================================================== class OSXTypeface : public Typeface { public: OSXTypeface (const Font& font) : Typeface (font.getTypefaceName(), font.getTypefaceStyle()) { JUCE_AUTORELEASEPOOL { renderingTransform = CGAffineTransformIdentity; NSDictionary* nsDict = [NSDictionary dictionaryWithObjectsAndKeys: juceStringToNS (name), NSFontFamilyAttribute, juceStringToNS (style), NSFontFaceAttribute, nil]; NSFontDescriptor* nsFontDesc = [NSFontDescriptor fontDescriptorWithFontAttributes: nsDict]; nsFont = [NSFont fontWithDescriptor: nsFontDesc size: referenceFontSize]; [nsFont retain]; #if SUPPORT_ONLY_10_4_FONTS initWithATSFont(); #else #if SUPPORT_10_4_FONTS if (NEW_CGFONT_FUNCTIONS_UNAVAILABLE) { initWithATSFont(); } else #endif { fontRef = CGFontCreateWithFontName ((CFStringRef) [nsFont fontName]); const float absAscent = std::abs ((float) CGFontGetAscent (fontRef)); const float totalHeight = absAscent + std::abs ((float) CGFontGetDescent (fontRef)); ascent = absAscent / totalHeight; unitsToHeightScaleFactor = 1.0f / totalHeight; const float nsFontAscent = std::abs ([nsFont ascender]); const float nsFontDescent = std::abs ([nsFont descender]); fontHeightToPointsFactor = referenceFontSize / (nsFontAscent + nsFontDescent); } #endif pathTransform = AffineTransform::identity.scale (unitsToHeightScaleFactor); } } ~OSXTypeface() { #if ! JUCE_IOS [nsFont release]; #endif if (fontRef != 0) CGFontRelease (fontRef); } #if SUPPORT_10_4_FONTS void initWithATSFont() { ATSFontRef atsFont = ATSFontFindFromName ((CFStringRef) [nsFont fontName], kATSOptionFlagsDefault); if (atsFont == 0) atsFont = ATSFontFindFromPostScriptName ((CFStringRef) [nsFont fontName], kATSOptionFlagsDefault); fontRef = CGFontCreateWithPlatformFont (&atsFont); const float absAscent = std::abs ([nsFont ascender]); const float absDescent = std::abs ([nsFont descender]); const float totalHeight = absAscent + absDescent; unitsToHeightScaleFactor = 1.0f / totalHeight; fontHeightToPointsFactor = referenceFontSize / totalHeight; ascent = absAscent / totalHeight; } #endif float getAscent() const { return ascent; } float getDescent() const { return 1.0f - ascent; } float getHeightToPointsFactor() const { return fontHeightToPointsFactor; } float getStringWidth (const String& text) { if (fontRef == 0 || text.isEmpty()) return 0; const int length = text.length(); HeapBlock glyphs; createGlyphsForString (text.getCharPointer(), length, glyphs); float x = 0; #if SUPPORT_ONLY_10_4_FONTS HeapBlock advances (length); [nsFont getAdvancements: advances forGlyphs: reinterpret_cast (glyphs.getData()) count: length]; for (int i = 0; i < length; ++i) x += advances[i].width; #else #if SUPPORT_10_4_FONTS if (NEW_CGFONT_FUNCTIONS_UNAVAILABLE) { HeapBlock advances (length); [nsFont getAdvancements: advances forGlyphs: reinterpret_cast (glyphs.getData()) count: length]; for (int i = 0; i < length; ++i) x += advances[i].width; } else #endif { HeapBlock advances (length); if (CGFontGetGlyphAdvances (fontRef, glyphs, length, advances)) for (int i = 0; i < length; ++i) x += advances[i]; } #endif return x * unitsToHeightScaleFactor; } void getGlyphPositions (const String& text, Array & resultGlyphs, Array & xOffsets) { xOffsets.add (0); if (fontRef == 0 || text.isEmpty()) return; const int length = text.length(); HeapBlock glyphs; createGlyphsForString (text.getCharPointer(), length, glyphs); #if SUPPORT_ONLY_10_4_FONTS HeapBlock advances (length); [nsFont getAdvancements: advances forGlyphs: reinterpret_cast (glyphs.getData()) count: length]; int x = 0; for (int i = 0; i < length; ++i) { x += advances[i].width; xOffsets.add (x * unitsToHeightScaleFactor); resultGlyphs.add (reinterpret_cast (glyphs.getData())[i]); } #else #if SUPPORT_10_4_FONTS if (NEW_CGFONT_FUNCTIONS_UNAVAILABLE) { HeapBlock advances (length); NSGlyph* const nsGlyphs = reinterpret_cast (glyphs.getData()); [nsFont getAdvancements: advances forGlyphs: nsGlyphs count: length]; float x = 0; for (int i = 0; i < length; ++i) { x += advances[i].width; xOffsets.add (x * unitsToHeightScaleFactor); resultGlyphs.add (nsGlyphs[i]); } } else #endif { HeapBlock advances (length); if (CGFontGetGlyphAdvances (fontRef, glyphs, length, advances)) { int x = 0; for (int i = 0; i < length; ++i) { x += advances [i]; xOffsets.add (x * unitsToHeightScaleFactor); resultGlyphs.add (glyphs[i]); } } } #endif } EdgeTable* getEdgeTableForGlyph (int glyphNumber, const AffineTransform& transform) { Path path; if (getOutlineForGlyph (glyphNumber, path) && ! path.isEmpty()) return new EdgeTable (path.getBoundsTransformed (transform).getSmallestIntegerContainer().expanded (1, 0), path, transform); return nullptr; } bool getOutlineForGlyph (int glyphNumber, Path& path) { #if JUCE_IOS return false; #else if (nsFont == nil) return false; // we might need to apply a transform to the path, so it mustn't have anything else in it jassert (path.isEmpty()); JUCE_AUTORELEASEPOOL { NSBezierPath* bez = [NSBezierPath bezierPath]; [bez moveToPoint: NSMakePoint (0, 0)]; [bez appendBezierPathWithGlyph: (NSGlyph) glyphNumber inFont: nsFont]; for (int i = 0; i < [bez elementCount]; ++i) { NSPoint p[3]; switch ([bez elementAtIndex: i associatedPoints: p]) { case NSMoveToBezierPathElement: path.startNewSubPath ((float) p[0].x, (float) -p[0].y); break; case NSLineToBezierPathElement: path.lineTo ((float) p[0].x, (float) -p[0].y); break; case NSCurveToBezierPathElement: path.cubicTo ((float) p[0].x, (float) -p[0].y, (float) p[1].x, (float) -p[1].y, (float) p[2].x, (float) -p[2].y); break; case NSClosePathBezierPathElement: path.closeSubPath(); break; default: jassertfalse; break; } } path.applyTransform (pathTransform); } return true; #endif } //============================================================================== CGFontRef fontRef; float fontHeightToPointsFactor; CGAffineTransform renderingTransform; private: float ascent, unitsToHeightScaleFactor; #if ! JUCE_IOS NSFont* nsFont; AffineTransform pathTransform; #endif void createGlyphsForString (String::CharPointerType text, const int length, HeapBlock & glyphs) { #if SUPPORT_10_4_FONTS #if ! SUPPORT_ONLY_10_4_FONTS if (NEW_CGFONT_FUNCTIONS_UNAVAILABLE) #endif { glyphs.malloc (sizeof (NSGlyph) * length, 1); NSGlyph* const nsGlyphs = reinterpret_cast (glyphs.getData()); for (int i = 0; i < length; ++i) nsGlyphs[i] = (NSGlyph) [nsFont _defaultGlyphForChar: text.getAndAdvance()]; return; } #endif #if ! SUPPORT_ONLY_10_4_FONTS if (charToGlyphMapper == nullptr) charToGlyphMapper = new CharToGlyphMapper (fontRef); glyphs.malloc (length); for (int i = 0; i < length; ++i) glyphs[i] = (CGGlyph) charToGlyphMapper->getGlyphForCharacter (text.getAndAdvance()); #endif } #if ! SUPPORT_ONLY_10_4_FONTS // Reads a CGFontRef's character map table to convert unicode into glyph numbers class CharToGlyphMapper { public: CharToGlyphMapper (CGFontRef cgFontRef) : segCount (0), endCode (0), startCode (0), idDelta (0), idRangeOffset (0), glyphIndexes (0) { CFDataRef cmapTable = CGFontCopyTableForTag (cgFontRef, 'cmap'); if (cmapTable != 0) { const int numSubtables = getValue16 (cmapTable, 2); for (int i = 0; i < numSubtables; ++i) { if (getValue16 (cmapTable, i * 8 + 4) == 0) // check for platform ID of 0 { const int offset = getValue32 (cmapTable, i * 8 + 8); if (getValue16 (cmapTable, offset) == 4) // check that it's format 4.. { const int length = getValue16 (cmapTable, offset + 2); const int segCountX2 = getValue16 (cmapTable, offset + 6); segCount = segCountX2 / 2; const int endCodeOffset = offset + 14; const int startCodeOffset = endCodeOffset + 2 + segCountX2; const int idDeltaOffset = startCodeOffset + segCountX2; const int idRangeOffsetOffset = idDeltaOffset + segCountX2; const int glyphIndexesOffset = idRangeOffsetOffset + segCountX2; endCode = CFDataCreate (kCFAllocatorDefault, CFDataGetBytePtr (cmapTable) + endCodeOffset, segCountX2); startCode = CFDataCreate (kCFAllocatorDefault, CFDataGetBytePtr (cmapTable) + startCodeOffset, segCountX2); idDelta = CFDataCreate (kCFAllocatorDefault, CFDataGetBytePtr (cmapTable) + idDeltaOffset, segCountX2); idRangeOffset = CFDataCreate (kCFAllocatorDefault, CFDataGetBytePtr (cmapTable) + idRangeOffsetOffset, segCountX2); glyphIndexes = CFDataCreate (kCFAllocatorDefault, CFDataGetBytePtr (cmapTable) + glyphIndexesOffset, offset + length - glyphIndexesOffset); } break; } } CFRelease (cmapTable); } } ~CharToGlyphMapper() { if (endCode != 0) { CFRelease (endCode); CFRelease (startCode); CFRelease (idDelta); CFRelease (idRangeOffset); CFRelease (glyphIndexes); } } int getGlyphForCharacter (const juce_wchar c) const { for (int i = 0; i < segCount; ++i) { if (getValue16 (endCode, i * 2) >= c) { const int start = getValue16 (startCode, i * 2); if (start > c) break; const int delta = getValue16 (idDelta, i * 2); const int rangeOffset = getValue16 (idRangeOffset, i * 2); if (rangeOffset == 0) return delta + c; else return getValue16 (glyphIndexes, 2 * ((rangeOffset / 2) + (c - start) - (segCount - i))); } } // If we failed to find it "properly", this dodgy fall-back seems to do the trick for most fonts! return jmax (-1, (int) c - 29); } private: int segCount; CFDataRef endCode, startCode, idDelta, idRangeOffset, glyphIndexes; static uint16 getValue16 (CFDataRef data, const int index) { return CFSwapInt16BigToHost (*(UInt16*) (CFDataGetBytePtr (data) + index)); } static uint32 getValue32 (CFDataRef data, const int index) { return CFSwapInt32BigToHost (*(UInt32*) (CFDataGetBytePtr (data) + index)); } }; ScopedPointer charToGlyphMapper; #endif JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (OSXTypeface) }; StringArray Font::findAllTypefaceNames() { StringArray names; JUCE_AUTORELEASEPOOL { #if JUCE_IOS for (NSString* name in [UIFont familyNames]) #else for (NSString* name in [[NSFontManager sharedFontManager] availableFontFamilies]) #endif names.add (nsStringToJuce (name)); names.sort (true); } return names; } StringArray Font::findAllTypefaceStyles (const String& family) { if (FontStyleHelpers::isPlaceholderFamilyName (family)) return findAllTypefaceStyles (FontStyleHelpers::getConcreteFamilyNameFromPlaceholder (family)); StringArray results; JUCE_AUTORELEASEPOOL { for (NSArray* style in [[NSFontManager sharedFontManager] availableMembersOfFontFamily: juceStringToNS (family)]) results.add (nsStringToJuce ((NSString*) [style objectAtIndex: 1])); } return results; } #endif //============================================================================== Typeface::Ptr Typeface::createSystemTypefaceFor (const Font& font) { return new OSXTypeface (font); } void Typeface::scanFolderForFonts (const File&) { jassertfalse; // not implemented on this platform } struct DefaultFontNames { DefaultFontNames() #if JUCE_IOS : defaultSans ("Helvetica"), defaultSerif ("Times New Roman"), defaultFixed ("Courier New"), #else : defaultSans ("Lucida Grande"), defaultSerif ("Times New Roman"), defaultFixed ("Menlo"), #endif defaultFallback ("Arial Unicode MS") { } String defaultSans, defaultSerif, defaultFixed, defaultFallback; }; Typeface::Ptr Font::getDefaultTypefaceForFont (const Font& font) { static DefaultFontNames defaultNames; Font newFont (font); const String& faceName = font.getTypefaceName(); if (faceName == getDefaultSansSerifFontName()) newFont.setTypefaceName (defaultNames.defaultSans); else if (faceName == getDefaultSerifFontName()) newFont.setTypefaceName (defaultNames.defaultSerif); else if (faceName == getDefaultMonospacedFontName()) newFont.setTypefaceName (defaultNames.defaultFixed); if (font.getTypefaceStyle() == getDefaultStyle()) newFont.setTypefaceStyle ("Regular"); return Typeface::createSystemTypefaceFor (newFont); } bool TextLayout::createNativeLayout (const AttributedString& text) { #if JUCE_CORETEXT_AVAILABLE CoreTextTypeLayout::createLayout (*this, text); return true; #else (void) text; return false; #endif }