902 lines
37 KiB
Plaintext
902 lines
37 KiB
Plaintext
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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static constexpr float referenceFontSize = 1024.0f;
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static CTFontRef getCTFontFromTypeface (const Font&);
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namespace CoreTextTypeLayout
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{
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static String findBestAvailableStyle (const Font& font, CGAffineTransform& requiredTransform)
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{
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auto availableStyles = Font::findAllTypefaceStyles (font.getTypefaceName());
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auto style = font.getTypefaceStyle();
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if (! availableStyles.contains (style))
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{
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if (font.isItalic()) // Fake-up an italic font if there isn't a real one.
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requiredTransform = CGAffineTransformMake (1.0f, 0, 0.1f, 1.0f, 0, 0);
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return availableStyles[0];
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}
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return style;
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}
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static float getFontTotalHeight (CTFontRef font)
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{
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return std::abs ((float) CTFontGetAscent (font))
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+ std::abs ((float) CTFontGetDescent (font));
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}
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static float getHeightToPointsFactor (CTFontRef font)
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{
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return referenceFontSize / getFontTotalHeight (font);
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}
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static CFUniquePtr<CTFontRef> getFontWithPointSize (CTFontRef font, float pointSize)
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{
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return CFUniquePtr<CTFontRef> (CTFontCreateCopyWithAttributes (font, pointSize, nullptr, nullptr));
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}
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static CFUniquePtr<CTFontRef> createCTFont (const Font& font, const float fontSizePoints, CGAffineTransform& transformRequired)
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{
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CFUniquePtr<CFStringRef> cfFontFamily (FontStyleHelpers::getConcreteFamilyName (font).toCFString());
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CFUniquePtr<CFStringRef> cfFontStyle (findBestAvailableStyle (font, transformRequired).toCFString());
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CFStringRef keys[] = { kCTFontFamilyNameAttribute, kCTFontStyleNameAttribute };
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CFTypeRef values[] = { cfFontFamily.get(), cfFontStyle.get() };
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CFUniquePtr<CFDictionaryRef> fontDescAttributes (CFDictionaryCreate (nullptr,
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(const void**) &keys,
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(const void**) &values,
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numElementsInArray (keys),
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks));
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CFUniquePtr<CTFontDescriptorRef> ctFontDescRef (CTFontDescriptorCreateWithAttributes (fontDescAttributes.get()));
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return CFUniquePtr<CTFontRef> (CTFontCreateWithFontDescriptor (ctFontDescRef.get(), fontSizePoints, nullptr));
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}
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//==============================================================================
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struct Advances
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{
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Advances (CTRunRef run, CFIndex numGlyphs) : advances (CTRunGetAdvancesPtr (run))
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{
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if (advances == nullptr)
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{
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local.malloc (numGlyphs);
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CTRunGetAdvances (run, CFRangeMake (0, 0), local);
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advances = local;
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}
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}
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const CGSize* advances;
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HeapBlock<CGSize> local;
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};
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struct Glyphs
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{
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Glyphs (CTRunRef run, size_t numGlyphs) : glyphs (CTRunGetGlyphsPtr (run))
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{
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if (glyphs == nullptr)
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{
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local.malloc (numGlyphs);
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CTRunGetGlyphs (run, CFRangeMake (0, 0), local);
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glyphs = local;
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}
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}
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const CGGlyph* glyphs;
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HeapBlock<CGGlyph> local;
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};
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struct Positions
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{
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Positions (CTRunRef run, size_t numGlyphs) : points (CTRunGetPositionsPtr (run))
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{
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if (points == nullptr)
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{
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local.malloc (numGlyphs);
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CTRunGetPositions (run, CFRangeMake (0, 0), local);
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points = local;
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}
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}
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const CGPoint* points;
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HeapBlock<CGPoint> local;
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};
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struct LineInfo
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{
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LineInfo (CTFrameRef frame, CTLineRef line, CFIndex lineIndex)
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{
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CTFrameGetLineOrigins (frame, CFRangeMake (lineIndex, 1), &origin);
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CTLineGetTypographicBounds (line, &ascent, &descent, &leading);
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}
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CGPoint origin;
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CGFloat ascent, descent, leading;
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};
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static CFUniquePtr<CTFontRef> getOrCreateFont (const Font& f)
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{
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if (auto ctf = getCTFontFromTypeface (f))
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{
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CFRetain (ctf);
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return CFUniquePtr<CTFontRef> (ctf);
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}
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CGAffineTransform transform;
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return createCTFont (f, referenceFontSize, transform);
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}
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//==============================================================================
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static CTTextAlignment getTextAlignment (const AttributedString& text)
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{
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const auto flags = text.getJustification().getOnlyHorizontalFlags();
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if (@available (macOS 10.8, *))
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{
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switch (flags)
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{
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case Justification::right: return kCTTextAlignmentRight;
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case Justification::horizontallyCentred: return kCTTextAlignmentCenter;
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case Justification::horizontallyJustified: return kCTTextAlignmentJustified;
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default: return kCTTextAlignmentLeft;
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}
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}
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JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wdeprecated-declarations")
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switch (flags)
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{
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case Justification::right: return kCTRightTextAlignment;
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case Justification::horizontallyCentred: return kCTCenterTextAlignment;
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case Justification::horizontallyJustified: return kCTJustifiedTextAlignment;
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default: return kCTLeftTextAlignment;
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}
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JUCE_END_IGNORE_WARNINGS_GCC_LIKE
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}
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static CTLineBreakMode getLineBreakMode (const AttributedString& text)
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{
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switch (text.getWordWrap())
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{
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case AttributedString::none: return kCTLineBreakByClipping;
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case AttributedString::byChar: return kCTLineBreakByCharWrapping;
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case AttributedString::byWord:
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default: return kCTLineBreakByWordWrapping;
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}
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}
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static CTWritingDirection getWritingDirection (const AttributedString& text)
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{
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switch (text.getReadingDirection())
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{
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case AttributedString::rightToLeft: return kCTWritingDirectionRightToLeft;
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case AttributedString::leftToRight: return kCTWritingDirectionLeftToRight;
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case AttributedString::natural:
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default: return kCTWritingDirectionNatural;
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}
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}
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//==============================================================================
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struct AttributedStringAndFontMap
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{
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CFUniquePtr<CFAttributedStringRef> string;
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std::map<CTFontRef, Font> fontMap;
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};
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static AttributedStringAndFontMap createCFAttributedString (const AttributedString& text)
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{
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std::map<CTFontRef, Font> fontMap;
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const detail::ColorSpacePtr rgbColourSpace { CGColorSpaceCreateWithName (kCGColorSpaceSRGB) };
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auto attribString = CFAttributedStringCreateMutable (kCFAllocatorDefault, 0);
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CFUniquePtr<CFStringRef> cfText (text.getText().toCFString());
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CFAttributedStringReplaceString (attribString, CFRangeMake (0, 0), cfText.get());
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auto numCharacterAttributes = text.getNumAttributes();
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auto attribStringLen = CFAttributedStringGetLength (attribString);
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for (int i = 0; i < numCharacterAttributes; ++i)
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{
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auto& attr = text.getAttribute (i);
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auto rangeStart = attr.range.getStart();
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if (rangeStart >= attribStringLen)
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continue;
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auto range = CFRangeMake (rangeStart, jmin (attr.range.getEnd(), (int) attribStringLen) - rangeStart);
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if (auto ctFontRef = getOrCreateFont (attr.font))
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{
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ctFontRef = getFontWithPointSize (ctFontRef.get(), attr.font.getHeight() * getHeightToPointsFactor (ctFontRef.get()));
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fontMap.emplace (ctFontRef.get(), attr.font);
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CFAttributedStringSetAttribute (attribString, range, kCTFontAttributeName, ctFontRef.get());
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if (attr.font.isUnderlined())
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{
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auto underline = kCTUnderlineStyleSingle;
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CFUniquePtr<CFNumberRef> numberRef (CFNumberCreate (nullptr, kCFNumberIntType, &underline));
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CFAttributedStringSetAttribute (attribString, range, kCTUnderlineStyleAttributeName, numberRef.get());
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}
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auto extraKerning = attr.font.getExtraKerningFactor();
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if (extraKerning != 0)
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{
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extraKerning *= attr.font.getHeight();
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CFUniquePtr<CFNumberRef> numberRef (CFNumberCreate (nullptr, kCFNumberFloatType, &extraKerning));
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CFAttributedStringSetAttribute (attribString, range, kCTKernAttributeName, numberRef.get());
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}
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}
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{
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auto col = attr.colour;
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const CGFloat components[] = { col.getFloatRed(),
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col.getFloatGreen(),
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col.getFloatBlue(),
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col.getFloatAlpha() };
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auto colour = CGColorCreate (rgbColourSpace.get(), components);
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CFAttributedStringSetAttribute (attribString, range, kCTForegroundColorAttributeName, colour);
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CGColorRelease (colour);
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}
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}
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// Paragraph Attributes
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auto ctTextAlignment = getTextAlignment (text);
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auto ctLineBreakMode = getLineBreakMode (text);
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auto ctWritingDirection = getWritingDirection (text);
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CGFloat ctLineSpacing = text.getLineSpacing();
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CTParagraphStyleSetting settings[] =
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{
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{ kCTParagraphStyleSpecifierAlignment, sizeof (CTTextAlignment), &ctTextAlignment },
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{ kCTParagraphStyleSpecifierLineBreakMode, sizeof (CTLineBreakMode), &ctLineBreakMode },
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{ kCTParagraphStyleSpecifierBaseWritingDirection, sizeof (CTWritingDirection), &ctWritingDirection},
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{ kCTParagraphStyleSpecifierLineSpacingAdjustment, sizeof (CGFloat), &ctLineSpacing }
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};
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CFUniquePtr<CTParagraphStyleRef> ctParagraphStyleRef (CTParagraphStyleCreate (settings, (size_t) numElementsInArray (settings)));
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CFAttributedStringSetAttribute (attribString, CFRangeMake (0, CFAttributedStringGetLength (attribString)),
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kCTParagraphStyleAttributeName, ctParagraphStyleRef.get());
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return { CFUniquePtr<CFAttributedStringRef> (attribString), std::move (fontMap) };
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}
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struct FramesetterAndFontMap
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{
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CFUniquePtr<CTFramesetterRef> framesetter;
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std::map<CTFontRef, Font> fontMap;
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};
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static FramesetterAndFontMap createCTFramesetter (const AttributedString& text)
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{
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auto attribStringAndMap = createCFAttributedString (text);
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return { CFUniquePtr<CTFramesetterRef> (CTFramesetterCreateWithAttributedString (attribStringAndMap.string.get())),
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std::move (attribStringAndMap.fontMap) };
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}
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static CFUniquePtr<CTFrameRef> createCTFrame (CTFramesetterRef framesetter, CGRect bounds)
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{
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auto path = CGPathCreateMutable();
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CGPathAddRect (path, nullptr, bounds);
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CFUniquePtr<CTFrameRef> frame (CTFramesetterCreateFrame (framesetter, CFRangeMake (0, 0), path, nullptr));
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CGPathRelease (path);
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return frame;
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}
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struct FrameAndFontMap
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{
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CFUniquePtr<CTFrameRef> frame;
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std::map<CTFontRef, Font> fontMap;
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};
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static FrameAndFontMap createCTFrame (const AttributedString& text, CGRect bounds)
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{
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auto framesetterAndMap = createCTFramesetter (text);
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return { createCTFrame (framesetterAndMap.framesetter.get(), bounds),
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std::move (framesetterAndMap.fontMap) };
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}
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static Range<float> getLineVerticalRange (CTFrameRef frame, CFArrayRef lines, int lineIndex)
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{
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LineInfo info (frame, (CTLineRef) CFArrayGetValueAtIndex (lines, lineIndex), lineIndex);
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return { (float) (info.origin.y - info.descent),
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(float) (info.origin.y + info.ascent) };
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}
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static float findCTFrameHeight (CTFrameRef frame)
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{
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auto lines = CTFrameGetLines (frame);
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auto numLines = CFArrayGetCount (lines);
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if (numLines == 0)
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return 0;
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auto range = getLineVerticalRange (frame, lines, 0);
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if (numLines > 1)
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range = range.getUnionWith (getLineVerticalRange (frame, lines, (int) numLines - 1));
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return range.getLength();
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}
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static bool areAllFontsDefaultWidth (const AttributedString& text)
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{
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auto numCharacterAttributes = text.getNumAttributes();
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for (int i = 0; i < numCharacterAttributes; ++i)
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if (text.getAttribute (i).font.getHorizontalScale() != 1.0f)
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return false;
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return true;
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}
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static bool drawToCGContext (const AttributedString& text, const Rectangle<float>& area,
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const CGContextRef& context, float flipHeight)
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{
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if (! areAllFontsDefaultWidth (text))
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return false;
|
||
|
|
|
||
|
|
auto framesetter = createCTFramesetter (text).framesetter;
|
||
|
|
|
||
|
|
// Ugly hack to fix a bug in OS X Sierra where the CTFrame needs to be slightly
|
||
|
|
// larger than the font height - otherwise the CTFrame will be invalid
|
||
|
|
|
||
|
|
CFRange fitrange;
|
||
|
|
auto suggestedSingleLineFrameSize =
|
||
|
|
CTFramesetterSuggestFrameSizeWithConstraints (framesetter.get(), CFRangeMake (0, 0), nullptr,
|
||
|
|
CGSizeMake (CGFLOAT_MAX, CGFLOAT_MAX), &fitrange);
|
||
|
|
auto minCTFrameHeight = (float) suggestedSingleLineFrameSize.height;
|
||
|
|
|
||
|
|
auto verticalJustification = text.getJustification().getOnlyVerticalFlags();
|
||
|
|
|
||
|
|
auto ctFrameArea = [area, minCTFrameHeight, verticalJustification]
|
||
|
|
{
|
||
|
|
if (minCTFrameHeight < area.getHeight())
|
||
|
|
return area;
|
||
|
|
|
||
|
|
if (verticalJustification == Justification::verticallyCentred)
|
||
|
|
return area.withSizeKeepingCentre (area.getWidth(), minCTFrameHeight);
|
||
|
|
|
||
|
|
auto frameArea = area.withHeight (minCTFrameHeight);
|
||
|
|
|
||
|
|
if (verticalJustification == Justification::bottom)
|
||
|
|
return frameArea.withBottomY (area.getBottom());
|
||
|
|
|
||
|
|
return frameArea;
|
||
|
|
}();
|
||
|
|
|
||
|
|
auto frame = createCTFrame (framesetter.get(), CGRectMake ((CGFloat) ctFrameArea.getX(), flipHeight - (CGFloat) ctFrameArea.getBottom(),
|
||
|
|
(CGFloat) ctFrameArea.getWidth(), (CGFloat) ctFrameArea.getHeight()));
|
||
|
|
|
||
|
|
auto textMatrix = CGContextGetTextMatrix (context);
|
||
|
|
CGContextSaveGState (context);
|
||
|
|
|
||
|
|
if (verticalJustification == Justification::verticallyCentred
|
||
|
|
|| verticalJustification == Justification::bottom)
|
||
|
|
{
|
||
|
|
auto adjust = ctFrameArea.getHeight() - findCTFrameHeight (frame.get());
|
||
|
|
|
||
|
|
if (verticalJustification == Justification::verticallyCentred)
|
||
|
|
adjust *= 0.5f;
|
||
|
|
|
||
|
|
CGContextTranslateCTM (context, 0, -adjust);
|
||
|
|
}
|
||
|
|
|
||
|
|
CTFrameDraw (frame.get(), context);
|
||
|
|
|
||
|
|
CGContextRestoreGState (context);
|
||
|
|
CGContextSetTextMatrix (context, textMatrix);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void createLayout (TextLayout& glyphLayout, const AttributedString& text)
|
||
|
|
{
|
||
|
|
auto boundsHeight = glyphLayout.getHeight();
|
||
|
|
auto frameAndMap = createCTFrame (text, CGRectMake (0, 0, glyphLayout.getWidth(), boundsHeight));
|
||
|
|
auto lines = CTFrameGetLines (frameAndMap.frame.get());
|
||
|
|
auto numLines = CFArrayGetCount (lines);
|
||
|
|
|
||
|
|
glyphLayout.ensureStorageAllocated ((int) numLines);
|
||
|
|
|
||
|
|
for (CFIndex i = 0; i < numLines; ++i)
|
||
|
|
{
|
||
|
|
auto line = (CTLineRef) CFArrayGetValueAtIndex (lines, i);
|
||
|
|
auto runs = CTLineGetGlyphRuns (line);
|
||
|
|
auto numRuns = CFArrayGetCount (runs);
|
||
|
|
|
||
|
|
auto cfrlineStringRange = CTLineGetStringRange (line);
|
||
|
|
auto lineStringEnd = cfrlineStringRange.location + cfrlineStringRange.length;
|
||
|
|
Range<int> lineStringRange ((int) cfrlineStringRange.location, (int) lineStringEnd);
|
||
|
|
|
||
|
|
LineInfo lineInfo (frameAndMap.frame.get(), line, i);
|
||
|
|
|
||
|
|
auto glyphLine = std::make_unique<TextLayout::Line> (lineStringRange,
|
||
|
|
Point<float> ((float) lineInfo.origin.x,
|
||
|
|
(float) (boundsHeight - lineInfo.origin.y)),
|
||
|
|
(float) lineInfo.ascent,
|
||
|
|
(float) lineInfo.descent,
|
||
|
|
(float) lineInfo.leading,
|
||
|
|
(int) numRuns);
|
||
|
|
|
||
|
|
for (CFIndex j = 0; j < numRuns; ++j)
|
||
|
|
{
|
||
|
|
auto run = (CTRunRef) CFArrayGetValueAtIndex (runs, j);
|
||
|
|
auto numGlyphs = CTRunGetGlyphCount (run);
|
||
|
|
auto runStringRange = CTRunGetStringRange (run);
|
||
|
|
|
||
|
|
auto glyphRun = new TextLayout::Run (Range<int> ((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))
|
||
|
|
{
|
||
|
|
glyphRun->font = [&]
|
||
|
|
{
|
||
|
|
auto it = frameAndMap.fontMap.find (ctRunFont);
|
||
|
|
|
||
|
|
if (it != frameAndMap.fontMap.end())
|
||
|
|
return it->second;
|
||
|
|
|
||
|
|
CFUniquePtr<CFStringRef> cfsFontName (CTFontCopyPostScriptName (ctRunFont));
|
||
|
|
CFUniquePtr<CTFontRef> ctFontRef (CTFontCreateWithName (cfsFontName.get(), referenceFontSize, nullptr));
|
||
|
|
|
||
|
|
auto fontHeightToPointsFactor = getHeightToPointsFactor (ctFontRef.get());
|
||
|
|
|
||
|
|
CFUniquePtr<CFStringRef> cfsFontFamily ((CFStringRef) CTFontCopyAttribute (ctRunFont, kCTFontFamilyNameAttribute));
|
||
|
|
CFUniquePtr<CFStringRef> cfsFontStyle ((CFStringRef) CTFontCopyAttribute (ctRunFont, kCTFontStyleNameAttribute));
|
||
|
|
|
||
|
|
Font result (String::fromCFString (cfsFontFamily.get()),
|
||
|
|
String::fromCFString (cfsFontStyle.get()),
|
||
|
|
(float) (CTFontGetSize (ctRunFont) / fontHeightToPointsFactor));
|
||
|
|
|
||
|
|
auto isUnderlined = [&]
|
||
|
|
{
|
||
|
|
CFNumberRef underlineStyle;
|
||
|
|
|
||
|
|
if (CFDictionaryGetValueIfPresent (runAttributes, kCTUnderlineStyleAttributeName, (const void**) &underlineStyle))
|
||
|
|
{
|
||
|
|
if (CFGetTypeID (underlineStyle) == CFNumberGetTypeID())
|
||
|
|
{
|
||
|
|
int value = 0;
|
||
|
|
CFNumberGetValue (underlineStyle, kCFNumberLongType, (void*) &value);
|
||
|
|
|
||
|
|
return value != 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}();
|
||
|
|
|
||
|
|
result.setUnderline (isUnderlined);
|
||
|
|
return result;
|
||
|
|
}();
|
||
|
|
}
|
||
|
|
|
||
|
|
CGColorRef cgRunColor;
|
||
|
|
|
||
|
|
if (CFDictionaryGetValueIfPresent (runAttributes, kCTForegroundColorAttributeName, (const void**) &cgRunColor)
|
||
|
|
&& CGColorGetNumberOfComponents (cgRunColor) == 4)
|
||
|
|
{
|
||
|
|
auto* components = CGColorGetComponents (cgRunColor);
|
||
|
|
|
||
|
|
glyphRun->colour = Colour::fromFloatRGBA ((float) components[0],
|
||
|
|
(float) components[1],
|
||
|
|
(float) components[2],
|
||
|
|
(float) components[3]);
|
||
|
|
}
|
||
|
|
|
||
|
|
const Glyphs glyphs (run, (size_t) numGlyphs);
|
||
|
|
const Advances advances (run, numGlyphs);
|
||
|
|
const Positions positions (run, (size_t) numGlyphs);
|
||
|
|
|
||
|
|
for (CFIndex k = 0; k < numGlyphs; ++k)
|
||
|
|
glyphRun->glyphs.add (TextLayout::Glyph (glyphs.glyphs[k],
|
||
|
|
convertToPointFloat (positions.points[k]),
|
||
|
|
(float) advances.advances[k].width));
|
||
|
|
}
|
||
|
|
|
||
|
|
glyphLayout.addLine (std::move (glyphLine));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
class OSXTypeface : public Typeface
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
OSXTypeface (const Font& font)
|
||
|
|
: Typeface (font.getTypefaceName(), font.getTypefaceStyle()), canBeUsedForLayout (true)
|
||
|
|
{
|
||
|
|
ctFontRef = CoreTextTypeLayout::createCTFont (font, referenceFontSize, renderingTransform);
|
||
|
|
|
||
|
|
if (ctFontRef != nullptr)
|
||
|
|
{
|
||
|
|
fontRef = CTFontCopyGraphicsFont (ctFontRef.get(), nullptr);
|
||
|
|
initialiseMetrics();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
OSXTypeface (const void* data, size_t dataSize)
|
||
|
|
: Typeface ({}, {}), canBeUsedForLayout (false), dataCopy (data, dataSize)
|
||
|
|
{
|
||
|
|
// We can't use CFDataCreate here as this triggers a false positive in ASAN
|
||
|
|
// so copy the data manually and use CFDataCreateWithBytesNoCopy
|
||
|
|
CFUniquePtr<CFDataRef> cfData (CFDataCreateWithBytesNoCopy (kCFAllocatorDefault, (const UInt8*) dataCopy.getData(),
|
||
|
|
(CFIndex) dataCopy.getSize(), kCFAllocatorNull));
|
||
|
|
auto provider = CGDataProviderCreateWithCFData (cfData.get());
|
||
|
|
|
||
|
|
#if JUCE_IOS
|
||
|
|
// Workaround for a an obscure iOS bug which can cause the app to dead-lock
|
||
|
|
// when loading custom type faces. See: http://www.openradar.me/18778790 and
|
||
|
|
// http://stackoverflow.com/questions/40242370/app-hangs-in-simulator
|
||
|
|
[UIFont systemFontOfSize: 12];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
fontRef = CGFontCreateWithDataProvider (provider);
|
||
|
|
CGDataProviderRelease (provider);
|
||
|
|
|
||
|
|
if (fontRef != nullptr)
|
||
|
|
{
|
||
|
|
if (@available (macOS 10.11, *))
|
||
|
|
canBeUsedForLayout = CTFontManagerRegisterGraphicsFont (fontRef, nullptr);
|
||
|
|
|
||
|
|
ctFontRef.reset (CTFontCreateWithGraphicsFont (fontRef, referenceFontSize, nullptr, nullptr));
|
||
|
|
|
||
|
|
if (ctFontRef != nullptr)
|
||
|
|
{
|
||
|
|
if (auto fontName = CFUniquePtr<CFStringRef> (CTFontCopyName (ctFontRef.get(), kCTFontFamilyNameKey)))
|
||
|
|
name = String::fromCFString (fontName.get());
|
||
|
|
|
||
|
|
if (auto fontStyle = CFUniquePtr<CFStringRef> (CTFontCopyName (ctFontRef.get(), kCTFontStyleNameKey)))
|
||
|
|
style = String::fromCFString (fontStyle.get());
|
||
|
|
|
||
|
|
initialiseMetrics();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void initialiseMetrics()
|
||
|
|
{
|
||
|
|
auto ctAscent = std::abs ((float) CTFontGetAscent (ctFontRef.get()));
|
||
|
|
auto ctDescent = std::abs ((float) CTFontGetDescent (ctFontRef.get()));
|
||
|
|
auto ctTotalHeight = ctAscent + ctDescent;
|
||
|
|
|
||
|
|
ascent = ctAscent / ctTotalHeight;
|
||
|
|
unitsToHeightScaleFactor = 1.0f / ctTotalHeight;
|
||
|
|
pathTransform = AffineTransform::scale (unitsToHeightScaleFactor);
|
||
|
|
|
||
|
|
fontHeightToPointsFactor = referenceFontSize / ctTotalHeight;
|
||
|
|
|
||
|
|
const short zero = 0;
|
||
|
|
CFUniquePtr<CFNumberRef> numberRef (CFNumberCreate (nullptr, kCFNumberShortType, &zero));
|
||
|
|
|
||
|
|
CFStringRef keys[] = { kCTFontAttributeName, kCTLigatureAttributeName };
|
||
|
|
CFTypeRef values[] = { ctFontRef.get(), numberRef.get() };
|
||
|
|
attributedStringAtts.reset (CFDictionaryCreate (nullptr, (const void**) &keys,
|
||
|
|
(const void**) &values, numElementsInArray (keys),
|
||
|
|
&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
|
||
|
|
}
|
||
|
|
|
||
|
|
~OSXTypeface() override
|
||
|
|
{
|
||
|
|
if (fontRef != nullptr)
|
||
|
|
{
|
||
|
|
if (@available (macOS 10.8, *))
|
||
|
|
if (dataCopy.getSize() != 0)
|
||
|
|
CTFontManagerUnregisterGraphicsFont (fontRef, nullptr);
|
||
|
|
|
||
|
|
CGFontRelease (fontRef);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
float getAscent() const override { return ascent; }
|
||
|
|
float getDescent() const override { return 1.0f - ascent; }
|
||
|
|
float getHeightToPointsFactor() const override { return fontHeightToPointsFactor; }
|
||
|
|
|
||
|
|
float getStringWidth (const String& text) override
|
||
|
|
{
|
||
|
|
float x = 0;
|
||
|
|
|
||
|
|
if (ctFontRef != nullptr && text.isNotEmpty())
|
||
|
|
{
|
||
|
|
CFUniquePtr<CFStringRef> cfText (text.toCFString());
|
||
|
|
CFUniquePtr<CFAttributedStringRef> attribString (CFAttributedStringCreate (kCFAllocatorDefault, cfText.get(), attributedStringAtts.get()));
|
||
|
|
|
||
|
|
CFUniquePtr<CTLineRef> line (CTLineCreateWithAttributedString (attribString.get()));
|
||
|
|
auto runArray = CTLineGetGlyphRuns (line.get());
|
||
|
|
|
||
|
|
for (CFIndex i = 0; i < CFArrayGetCount (runArray); ++i)
|
||
|
|
{
|
||
|
|
auto run = (CTRunRef) CFArrayGetValueAtIndex (runArray, i);
|
||
|
|
auto length = CTRunGetGlyphCount (run);
|
||
|
|
|
||
|
|
const CoreTextTypeLayout::Advances advances (run, length);
|
||
|
|
|
||
|
|
for (int j = 0; j < length; ++j)
|
||
|
|
x += (float) advances.advances[j].width;
|
||
|
|
}
|
||
|
|
|
||
|
|
x *= unitsToHeightScaleFactor;
|
||
|
|
}
|
||
|
|
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
void getGlyphPositions (const String& text, Array<int>& resultGlyphs, Array<float>& xOffsets) override
|
||
|
|
{
|
||
|
|
xOffsets.add (0);
|
||
|
|
|
||
|
|
if (ctFontRef != nullptr && text.isNotEmpty())
|
||
|
|
{
|
||
|
|
float x = 0;
|
||
|
|
|
||
|
|
CFUniquePtr<CFStringRef> cfText (text.toCFString());
|
||
|
|
CFUniquePtr<CFAttributedStringRef> attribString (CFAttributedStringCreate (kCFAllocatorDefault, cfText.get(), attributedStringAtts.get()));
|
||
|
|
|
||
|
|
CFUniquePtr<CTLineRef> line (CTLineCreateWithAttributedString (attribString.get()));
|
||
|
|
auto runArray = CTLineGetGlyphRuns (line.get());
|
||
|
|
|
||
|
|
for (CFIndex i = 0; i < CFArrayGetCount (runArray); ++i)
|
||
|
|
{
|
||
|
|
auto run = (CTRunRef) CFArrayGetValueAtIndex (runArray, i);
|
||
|
|
auto 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]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool getOutlineForGlyph (int glyphNumber, Path& path) override
|
||
|
|
{
|
||
|
|
jassert (path.isEmpty()); // we might need to apply a transform to the path, so this must be empty
|
||
|
|
|
||
|
|
if (auto pathRef = CFUniquePtr<CGPathRef> (CTFontCreatePathForGlyph (ctFontRef.get(), (CGGlyph) glyphNumber, &renderingTransform)))
|
||
|
|
{
|
||
|
|
CGPathApply (pathRef.get(), &path, pathApplier);
|
||
|
|
|
||
|
|
if (! pathTransform.isIdentity())
|
||
|
|
path.applyTransform (pathTransform);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
CGFontRef fontRef = {};
|
||
|
|
CFUniquePtr<CTFontRef> ctFontRef;
|
||
|
|
|
||
|
|
float fontHeightToPointsFactor = 1.0f;
|
||
|
|
CGAffineTransform renderingTransform = CGAffineTransformIdentity;
|
||
|
|
|
||
|
|
bool canBeUsedForLayout;
|
||
|
|
|
||
|
|
private:
|
||
|
|
MemoryBlock dataCopy;
|
||
|
|
CFUniquePtr<CFDictionaryRef> attributedStringAtts;
|
||
|
|
float ascent = 0, unitsToHeightScaleFactor = 0;
|
||
|
|
AffineTransform pathTransform;
|
||
|
|
|
||
|
|
static void pathApplier (void* info, const CGPathElement* element)
|
||
|
|
{
|
||
|
|
auto& path = *static_cast<Path*> (info);
|
||
|
|
auto* 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)
|
||
|
|
{
|
||
|
|
const auto typeface = f.getTypefacePtr();
|
||
|
|
|
||
|
|
if (auto* tf = dynamic_cast<OSXTypeface*> (typeface.get()))
|
||
|
|
return tf->ctFontRef.get();
|
||
|
|
|
||
|
|
return {};
|
||
|
|
}
|
||
|
|
|
||
|
|
StringArray Font::findAllTypefaceNames()
|
||
|
|
{
|
||
|
|
StringArray names;
|
||
|
|
|
||
|
|
#if JUCE_MAC
|
||
|
|
// CTFontManager only exists on OS X 10.6 and later, it does not exist on iOS
|
||
|
|
CFUniquePtr<CFArrayRef> fontFamilyArray (CTFontManagerCopyAvailableFontFamilyNames());
|
||
|
|
|
||
|
|
for (CFIndex i = 0; i < CFArrayGetCount (fontFamilyArray.get()); ++i)
|
||
|
|
{
|
||
|
|
auto family = String::fromCFString ((CFStringRef) CFArrayGetValueAtIndex (fontFamilyArray.get(), i));
|
||
|
|
|
||
|
|
if (! family.startsWithChar ('.')) // ignore fonts that start with a '.'
|
||
|
|
names.addIfNotAlreadyThere (family);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
CFUniquePtr<CTFontCollectionRef> fontCollectionRef (CTFontCollectionCreateFromAvailableFonts (nullptr));
|
||
|
|
CFUniquePtr<CFArrayRef> fontDescriptorArray (CTFontCollectionCreateMatchingFontDescriptors (fontCollectionRef.get()));
|
||
|
|
|
||
|
|
for (CFIndex i = 0; i < CFArrayGetCount (fontDescriptorArray.get()); ++i)
|
||
|
|
{
|
||
|
|
auto ctFontDescriptorRef = (CTFontDescriptorRef) CFArrayGetValueAtIndex (fontDescriptorArray.get(), i);
|
||
|
|
CFUniquePtr<CFStringRef> cfsFontFamily ((CFStringRef) CTFontDescriptorCopyAttribute (ctFontDescriptorRef, kCTFontFamilyNameAttribute));
|
||
|
|
|
||
|
|
names.addIfNotAlreadyThere (String::fromCFString (cfsFontFamily.get()));
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
names.sort (true);
|
||
|
|
return names;
|
||
|
|
}
|
||
|
|
|
||
|
|
StringArray Font::findAllTypefaceStyles (const String& family)
|
||
|
|
{
|
||
|
|
if (FontStyleHelpers::isPlaceholderFamilyName (family))
|
||
|
|
return findAllTypefaceStyles (FontStyleHelpers::getConcreteFamilyNameFromPlaceholder (family));
|
||
|
|
|
||
|
|
StringArray results;
|
||
|
|
|
||
|
|
CFUniquePtr<CFStringRef> cfsFontFamily (family.toCFString());
|
||
|
|
CFStringRef keys[] = { kCTFontFamilyNameAttribute };
|
||
|
|
CFTypeRef values[] = { cfsFontFamily.get() };
|
||
|
|
|
||
|
|
CFUniquePtr<CFDictionaryRef> fontDescAttributes (CFDictionaryCreate (nullptr, (const void**) &keys, (const void**) &values, numElementsInArray (keys),
|
||
|
|
&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks));
|
||
|
|
|
||
|
|
CFUniquePtr<CTFontDescriptorRef> ctFontDescRef (CTFontDescriptorCreateWithAttributes (fontDescAttributes.get()));
|
||
|
|
CFUniquePtr<CFArrayRef> fontFamilyArray (CFArrayCreate (kCFAllocatorDefault, (const void**) &ctFontDescRef, 1, &kCFTypeArrayCallBacks));
|
||
|
|
|
||
|
|
CFUniquePtr<CTFontCollectionRef> fontCollectionRef (CTFontCollectionCreateWithFontDescriptors (fontFamilyArray.get(), nullptr));
|
||
|
|
|
||
|
|
if (auto fontDescriptorArray = CFUniquePtr<CFArrayRef> (CTFontCollectionCreateMatchingFontDescriptors (fontCollectionRef.get())))
|
||
|
|
{
|
||
|
|
for (CFIndex i = 0; i < CFArrayGetCount (fontDescriptorArray.get()); ++i)
|
||
|
|
{
|
||
|
|
auto ctFontDescriptorRef = (CTFontDescriptorRef) CFArrayGetValueAtIndex (fontDescriptorArray.get(), i);
|
||
|
|
CFUniquePtr<CFStringRef> cfsFontStyle ((CFStringRef) CTFontDescriptorCopyAttribute (ctFontDescriptorRef, kCTFontStyleNameAttribute));
|
||
|
|
results.add (String::fromCFString (cfsFontStyle.get()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return results;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
Typeface::Ptr Typeface::createSystemTypefaceFor (const Font& font) { return *new OSXTypeface (font); }
|
||
|
|
Typeface::Ptr Typeface::createSystemTypefaceFor (const void* data, size_t size) { return *new OSXTypeface (data, size); }
|
||
|
|
|
||
|
|
void Typeface::scanFolderForFonts (const File& folder)
|
||
|
|
{
|
||
|
|
for (auto& file : folder.findChildFiles (File::findFiles, false, "*.otf;*.ttf"))
|
||
|
|
if (auto urlref = CFUniquePtr<CFURLRef> (CFURLCreateWithFileSystemPath (kCFAllocatorDefault, file.getFullPathName().toCFString(), kCFURLPOSIXPathStyle, true)))
|
||
|
|
CTFontManagerRegisterFontsForURL (urlref.get(), kCTFontManagerScopeProcess, nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct DefaultFontNames
|
||
|
|
{
|
||
|
|
#if JUCE_IOS
|
||
|
|
String defaultSans { "Helvetica" },
|
||
|
|
defaultSerif { "Times New Roman" },
|
||
|
|
defaultFixed { "Courier New" };
|
||
|
|
#else
|
||
|
|
String defaultSans { "Lucida Grande" },
|
||
|
|
defaultSerif { "Times New Roman" },
|
||
|
|
defaultFixed { "Menlo" };
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
Typeface::Ptr Font::getDefaultTypefaceForFont (const Font& font)
|
||
|
|
{
|
||
|
|
static DefaultFontNames defaultNames;
|
||
|
|
|
||
|
|
auto newFont = font;
|
||
|
|
auto 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool canAllTypefacesBeUsedInLayout (const AttributedString& text)
|
||
|
|
{
|
||
|
|
auto numCharacterAttributes = text.getNumAttributes();
|
||
|
|
|
||
|
|
for (int i = 0; i < numCharacterAttributes; ++i)
|
||
|
|
{
|
||
|
|
auto typeface = text.getAttribute (i).font.getTypefacePtr();
|
||
|
|
|
||
|
|
if (auto tf = dynamic_cast<OSXTypeface*> (typeface.get()))
|
||
|
|
if (tf->canBeUsedForLayout)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool TextLayout::createNativeLayout (const AttributedString& text)
|
||
|
|
{
|
||
|
|
if (canAllTypefacesBeUsedInLayout (text) && CoreTextTypeLayout::areAllFontsDefaultWidth (text))
|
||
|
|
{
|
||
|
|
CoreTextTypeLayout::createLayout (*this, text);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace juce
|