25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
823 lines
24 KiB
C++
823 lines
24 KiB
C++
/*
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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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namespace FontValues
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{
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static float limitFontHeight (const float height) noexcept
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{
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return jlimit (0.1f, 10000.0f, height);
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}
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const float defaultFontHeight = 14.0f;
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float minimumHorizontalScale = 0.7f;
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String fallbackFont;
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String fallbackFontStyle;
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}
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using GetTypefaceForFont = Typeface::Ptr (*)(const Font&);
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GetTypefaceForFont juce_getTypefaceForFont = nullptr;
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float Font::getDefaultMinimumHorizontalScaleFactor() noexcept { return FontValues::minimumHorizontalScale; }
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void Font::setDefaultMinimumHorizontalScaleFactor (float newValue) noexcept { FontValues::minimumHorizontalScale = newValue; }
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//==============================================================================
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class TypefaceCache : private DeletedAtShutdown
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{
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public:
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TypefaceCache()
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{
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setSize (10);
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}
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~TypefaceCache()
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{
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clearSingletonInstance();
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}
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JUCE_DECLARE_SINGLETON (TypefaceCache, false)
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void setSize (const int numToCache)
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{
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const ScopedWriteLock sl (lock);
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faces.clear();
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faces.insertMultiple (-1, CachedFace(), numToCache);
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}
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void clear()
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{
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const ScopedWriteLock sl (lock);
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setSize (faces.size());
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defaultFace = nullptr;
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}
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Typeface::Ptr findTypefaceFor (const Font& font)
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{
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const auto faceName = font.getTypefaceName();
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const auto faceStyle = font.getTypefaceStyle();
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jassert (faceName.isNotEmpty());
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{
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const ScopedReadLock slr (lock);
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for (int i = faces.size(); --i >= 0;)
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{
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CachedFace& face = faces.getReference(i);
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if (face.typefaceName == faceName
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&& face.typefaceStyle == faceStyle
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&& face.typeface != nullptr
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&& face.typeface->isSuitableForFont (font))
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{
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face.lastUsageCount = ++counter;
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return face.typeface;
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}
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}
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}
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const ScopedWriteLock slw (lock);
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int replaceIndex = 0;
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auto bestLastUsageCount = std::numeric_limits<size_t>::max();
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for (int i = faces.size(); --i >= 0;)
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{
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auto lu = faces.getReference(i).lastUsageCount;
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if (bestLastUsageCount > lu)
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{
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bestLastUsageCount = lu;
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replaceIndex = i;
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}
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}
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auto& face = faces.getReference (replaceIndex);
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face.typefaceName = faceName;
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face.typefaceStyle = faceStyle;
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face.lastUsageCount = ++counter;
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if (juce_getTypefaceForFont == nullptr)
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face.typeface = Font::getDefaultTypefaceForFont (font);
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else
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face.typeface = juce_getTypefaceForFont (font);
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jassert (face.typeface != nullptr); // the look and feel must return a typeface!
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if (defaultFace == nullptr && font == Font())
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defaultFace = face.typeface;
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return face.typeface;
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}
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Typeface::Ptr getDefaultFace() const noexcept
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{
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const ScopedReadLock slr (lock);
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return defaultFace;
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}
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private:
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struct CachedFace
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{
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CachedFace() noexcept {}
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// Although it seems a bit wacky to store the name here, it's because it may be a
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// placeholder rather than a real one, e.g. "<Sans-Serif>" vs the actual typeface name.
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// Since the typeface itself doesn't know that it may have this alias, the name under
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// which it was fetched needs to be stored separately.
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String typefaceName, typefaceStyle;
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size_t lastUsageCount = 0;
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Typeface::Ptr typeface;
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};
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Typeface::Ptr defaultFace;
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ReadWriteLock lock;
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Array<CachedFace> faces;
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size_t counter = 0;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (TypefaceCache)
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};
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JUCE_IMPLEMENT_SINGLETON (TypefaceCache)
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void Typeface::setTypefaceCacheSize (int numFontsToCache)
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{
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TypefaceCache::getInstance()->setSize (numFontsToCache);
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}
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void (*clearOpenGLGlyphCache)() = nullptr;
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void Typeface::clearTypefaceCache()
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{
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TypefaceCache::getInstance()->clear();
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RenderingHelpers::SoftwareRendererSavedState::clearGlyphCache();
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if (clearOpenGLGlyphCache != nullptr)
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clearOpenGLGlyphCache();
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}
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//==============================================================================
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class Font::SharedFontInternal : public ReferenceCountedObject
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{
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public:
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SharedFontInternal() noexcept
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: typeface (TypefaceCache::getInstance()->getDefaultFace()),
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typefaceName (Font::getDefaultSansSerifFontName()),
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typefaceStyle (Font::getDefaultStyle()),
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height (FontValues::defaultFontHeight)
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{
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}
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SharedFontInternal (int styleFlags, float fontHeight) noexcept
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: typefaceName (Font::getDefaultSansSerifFontName()),
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typefaceStyle (FontStyleHelpers::getStyleName (styleFlags)),
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height (fontHeight),
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underline ((styleFlags & underlined) != 0)
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{
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if (styleFlags == plain)
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typeface = TypefaceCache::getInstance()->getDefaultFace();
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}
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SharedFontInternal (const String& name, int styleFlags, float fontHeight) noexcept
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: typefaceName (name),
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typefaceStyle (FontStyleHelpers::getStyleName (styleFlags)),
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height (fontHeight),
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underline ((styleFlags & underlined) != 0)
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{
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if (styleFlags == plain && typefaceName.isEmpty())
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typeface = TypefaceCache::getInstance()->getDefaultFace();
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}
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SharedFontInternal (const String& name, const String& style, float fontHeight) noexcept
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: typefaceName (name), typefaceStyle (style), height (fontHeight)
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{
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if (typefaceName.isEmpty())
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typefaceName = Font::getDefaultSansSerifFontName();
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}
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explicit SharedFontInternal (const Typeface::Ptr& face) noexcept
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: typeface (face),
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typefaceName (face->getName()),
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typefaceStyle (face->getStyle()),
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height (FontValues::defaultFontHeight)
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{
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jassert (typefaceName.isNotEmpty());
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}
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SharedFontInternal (const SharedFontInternal& other) noexcept
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: ReferenceCountedObject(),
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typeface (other.typeface),
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typefaceName (other.typefaceName),
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typefaceStyle (other.typefaceStyle),
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height (other.height),
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horizontalScale (other.horizontalScale),
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kerning (other.kerning),
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ascent (other.ascent),
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underline (other.underline)
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{
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}
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bool operator== (const SharedFontInternal& other) const noexcept
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{
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return height == other.height
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&& underline == other.underline
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&& horizontalScale == other.horizontalScale
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&& kerning == other.kerning
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&& typefaceName == other.typefaceName
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&& typefaceStyle == other.typefaceStyle;
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}
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/* The typeface and ascent data members may be read/set from multiple threads
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simultaneously, e.g. in the case that two Font instances reference the same
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SharedFontInternal and call getTypefacePtr() simultaneously.
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We lock in functions that modify the typeface or ascent in order to
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ensure thread safety.
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*/
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Typeface::Ptr getTypefacePtr (const Font& f)
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{
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const ScopedLock lock (mutex);
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if (typeface == nullptr)
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{
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typeface = TypefaceCache::getInstance()->findTypefaceFor (f);
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jassert (typeface != nullptr);
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}
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return typeface;
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}
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void checkTypefaceSuitability (const Font& f)
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{
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const ScopedLock lock (mutex);
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if (typeface != nullptr && ! typeface->isSuitableForFont (f))
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typeface = nullptr;
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}
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float getAscent (const Font& f)
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{
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const ScopedLock lock (mutex);
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if (ascent == 0.0f)
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ascent = getTypefacePtr (f)->getAscent();
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return height * ascent;
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}
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/* We do not need to lock in these functions, as it's guaranteed
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that these data members can only change if there is a single Font
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instance referencing the shared state.
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*/
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String getTypefaceName() const { return typefaceName; }
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String getTypefaceStyle() const { return typefaceStyle; }
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float getHeight() const { return height; }
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float getHorizontalScale() const { return horizontalScale; }
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float getKerning() const { return kerning; }
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bool getUnderline() const { return underline; }
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/* This shared state may be shared between two or more Font instances that are being
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read/modified from multiple threads.
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Before modifying a shared instance you *must* call dupeInternalIfShared to
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ensure that only one Font instance is pointing to the SharedFontInternal instance
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during the modification.
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*/
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void setTypeface (Typeface::Ptr x)
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{
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jassert (getReferenceCount() == 1);
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typeface = std::move (x);
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}
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void setTypefaceName (String x)
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{
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jassert (getReferenceCount() == 1);
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typefaceName = std::move (x);
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}
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void setTypefaceStyle (String x)
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{
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jassert (getReferenceCount() == 1);
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typefaceStyle = std::move (x);
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}
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void setHeight (float x)
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{
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jassert (getReferenceCount() == 1);
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height = x;
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}
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void setHorizontalScale (float x)
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{
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jassert (getReferenceCount() == 1);
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horizontalScale = x;
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}
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void setKerning (float x)
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{
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jassert (getReferenceCount() == 1);
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kerning = x;
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}
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void setAscent (float x)
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{
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jassert (getReferenceCount() == 1);
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ascent = x;
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}
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void setUnderline (bool x)
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{
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jassert (getReferenceCount() == 1);
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underline = x;
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}
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private:
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Typeface::Ptr typeface;
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String typefaceName, typefaceStyle;
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float height = 0.0f, horizontalScale = 1.0f, kerning = 0.0f, ascent = 0.0f;
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bool underline = false;
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CriticalSection mutex;
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};
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//==============================================================================
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Font::Font() : font (new SharedFontInternal()) {}
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Font::Font (const Typeface::Ptr& typeface) : font (new SharedFontInternal (typeface)) {}
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Font::Font (const Font& other) noexcept : font (other.font) {}
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Font::Font (float fontHeight, int styleFlags)
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: font (new SharedFontInternal (styleFlags, FontValues::limitFontHeight (fontHeight)))
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{
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}
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Font::Font (const String& typefaceName, float fontHeight, int styleFlags)
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: font (new SharedFontInternal (typefaceName, styleFlags, FontValues::limitFontHeight (fontHeight)))
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{
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}
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Font::Font (const String& typefaceName, const String& typefaceStyle, float fontHeight)
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: font (new SharedFontInternal (typefaceName, typefaceStyle, FontValues::limitFontHeight (fontHeight)))
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{
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}
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Font& Font::operator= (const Font& other) noexcept
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{
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font = other.font;
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return *this;
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}
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Font::Font (Font&& other) noexcept
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: font (std::move (other.font))
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{
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}
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Font& Font::operator= (Font&& other) noexcept
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{
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font = std::move (other.font);
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return *this;
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}
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Font::~Font() noexcept = default;
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bool Font::operator== (const Font& other) const noexcept
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{
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return font == other.font
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|| *font == *other.font;
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}
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bool Font::operator!= (const Font& other) const noexcept
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{
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return ! operator== (other);
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}
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void Font::dupeInternalIfShared()
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{
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if (font->getReferenceCount() > 1)
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font = *new SharedFontInternal (*font);
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}
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void Font::checkTypefaceSuitability()
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{
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font->checkTypefaceSuitability (*this);
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}
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//==============================================================================
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struct FontPlaceholderNames
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{
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String sans { "<Sans-Serif>" },
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serif { "<Serif>" },
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mono { "<Monospaced>" },
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regular { "<Regular>" };
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};
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static const FontPlaceholderNames& getFontPlaceholderNames()
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{
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static FontPlaceholderNames names;
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return names;
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}
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#if JUCE_MSVC
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// This is a workaround for the lack of thread-safety in MSVC's handling of function-local
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// statics - if multiple threads all try to create the first Font object at the same time,
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// it can cause a race-condition in creating these placeholder strings.
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struct FontNamePreloader { FontNamePreloader() { getFontPlaceholderNames(); } };
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static FontNamePreloader fnp;
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#endif
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const String& Font::getDefaultSansSerifFontName() { return getFontPlaceholderNames().sans; }
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const String& Font::getDefaultSerifFontName() { return getFontPlaceholderNames().serif; }
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const String& Font::getDefaultMonospacedFontName() { return getFontPlaceholderNames().mono; }
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const String& Font::getDefaultStyle() { return getFontPlaceholderNames().regular; }
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String Font::getTypefaceName() const noexcept { return font->getTypefaceName(); }
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String Font::getTypefaceStyle() const noexcept { return font->getTypefaceStyle(); }
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void Font::setTypefaceName (const String& faceName)
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{
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if (faceName != font->getTypefaceName())
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{
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jassert (faceName.isNotEmpty());
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dupeInternalIfShared();
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font->setTypefaceName (faceName);
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font->setTypeface (nullptr);
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font->setAscent (0);
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}
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}
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void Font::setTypefaceStyle (const String& typefaceStyle)
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{
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if (typefaceStyle != font->getTypefaceStyle())
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{
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dupeInternalIfShared();
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font->setTypefaceStyle (typefaceStyle);
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font->setTypeface (nullptr);
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font->setAscent (0);
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}
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}
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Font Font::withTypefaceStyle (const String& newStyle) const
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{
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Font f (*this);
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f.setTypefaceStyle (newStyle);
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return f;
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}
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StringArray Font::getAvailableStyles() const
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{
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return findAllTypefaceStyles (getTypefacePtr()->getName());
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}
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Typeface::Ptr Font::getTypefacePtr() const
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{
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return font->getTypefacePtr (*this);
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}
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Typeface* Font::getTypeface() const
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{
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return getTypefacePtr().get();
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}
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//==============================================================================
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const String& Font::getFallbackFontName()
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{
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return FontValues::fallbackFont;
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}
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void Font::setFallbackFontName (const String& name)
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{
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FontValues::fallbackFont = name;
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#if JUCE_MAC || JUCE_IOS
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jassertfalse; // Note that use of a fallback font isn't currently implemented in OSX..
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#endif
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}
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const String& Font::getFallbackFontStyle()
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{
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return FontValues::fallbackFontStyle;
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}
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void Font::setFallbackFontStyle (const String& style)
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{
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FontValues::fallbackFontStyle = style;
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#if JUCE_MAC || JUCE_IOS
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jassertfalse; // Note that use of a fallback font isn't currently implemented in OSX..
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#endif
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}
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//==============================================================================
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Font Font::withHeight (const float newHeight) const
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{
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Font f (*this);
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f.setHeight (newHeight);
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return f;
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}
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float Font::getHeightToPointsFactor() const
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{
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return getTypefacePtr()->getHeightToPointsFactor();
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}
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Font Font::withPointHeight (float heightInPoints) const
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{
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Font f (*this);
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f.setHeight (heightInPoints / getHeightToPointsFactor());
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return f;
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}
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void Font::setHeight (float newHeight)
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{
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newHeight = FontValues::limitFontHeight (newHeight);
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if (font->getHeight() != newHeight)
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{
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dupeInternalIfShared();
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font->setHeight (newHeight);
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checkTypefaceSuitability();
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}
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}
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void Font::setHeightWithoutChangingWidth (float newHeight)
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{
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newHeight = FontValues::limitFontHeight (newHeight);
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if (font->getHeight() != newHeight)
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{
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dupeInternalIfShared();
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font->setHorizontalScale (font->getHorizontalScale() * (font->getHeight() / newHeight));
|
|
font->setHeight (newHeight);
|
|
checkTypefaceSuitability();
|
|
}
|
|
}
|
|
|
|
int Font::getStyleFlags() const noexcept
|
|
{
|
|
int styleFlags = font->getUnderline() ? underlined : plain;
|
|
|
|
if (isBold()) styleFlags |= bold;
|
|
if (isItalic()) styleFlags |= italic;
|
|
|
|
return styleFlags;
|
|
}
|
|
|
|
Font Font::withStyle (const int newFlags) const
|
|
{
|
|
Font f (*this);
|
|
f.setStyleFlags (newFlags);
|
|
return f;
|
|
}
|
|
|
|
void Font::setStyleFlags (const int newFlags)
|
|
{
|
|
if (getStyleFlags() != newFlags)
|
|
{
|
|
dupeInternalIfShared();
|
|
font->setTypeface (nullptr);
|
|
font->setTypefaceStyle (FontStyleHelpers::getStyleName (newFlags));
|
|
font->setUnderline ((newFlags & underlined) != 0);
|
|
font->setAscent (0);
|
|
}
|
|
}
|
|
|
|
void Font::setSizeAndStyle (float newHeight,
|
|
const int newStyleFlags,
|
|
const float newHorizontalScale,
|
|
const float newKerningAmount)
|
|
{
|
|
newHeight = FontValues::limitFontHeight (newHeight);
|
|
|
|
if (font->getHeight() != newHeight
|
|
|| font->getHorizontalScale() != newHorizontalScale
|
|
|| font->getKerning() != newKerningAmount)
|
|
{
|
|
dupeInternalIfShared();
|
|
font->setHeight (newHeight);
|
|
font->setHorizontalScale (newHorizontalScale);
|
|
font->setKerning (newKerningAmount);
|
|
checkTypefaceSuitability();
|
|
}
|
|
|
|
setStyleFlags (newStyleFlags);
|
|
}
|
|
|
|
void Font::setSizeAndStyle (float newHeight,
|
|
const String& newStyle,
|
|
const float newHorizontalScale,
|
|
const float newKerningAmount)
|
|
{
|
|
newHeight = FontValues::limitFontHeight (newHeight);
|
|
|
|
if (font->getHeight() != newHeight
|
|
|| font->getHorizontalScale() != newHorizontalScale
|
|
|| font->getKerning() != newKerningAmount)
|
|
{
|
|
dupeInternalIfShared();
|
|
font->setHeight (newHeight);
|
|
font->setHorizontalScale (newHorizontalScale);
|
|
font->setKerning (newKerningAmount);
|
|
checkTypefaceSuitability();
|
|
}
|
|
|
|
setTypefaceStyle (newStyle);
|
|
}
|
|
|
|
Font Font::withHorizontalScale (const float newHorizontalScale) const
|
|
{
|
|
Font f (*this);
|
|
f.setHorizontalScale (newHorizontalScale);
|
|
return f;
|
|
}
|
|
|
|
void Font::setHorizontalScale (const float scaleFactor)
|
|
{
|
|
dupeInternalIfShared();
|
|
font->setHorizontalScale (scaleFactor);
|
|
checkTypefaceSuitability();
|
|
}
|
|
|
|
float Font::getHorizontalScale() const noexcept
|
|
{
|
|
return font->getHorizontalScale();
|
|
}
|
|
|
|
float Font::getExtraKerningFactor() const noexcept
|
|
{
|
|
return font->getKerning();
|
|
}
|
|
|
|
Font Font::withExtraKerningFactor (const float extraKerning) const
|
|
{
|
|
Font f (*this);
|
|
f.setExtraKerningFactor (extraKerning);
|
|
return f;
|
|
}
|
|
|
|
void Font::setExtraKerningFactor (const float extraKerning)
|
|
{
|
|
dupeInternalIfShared();
|
|
font->setKerning (extraKerning);
|
|
checkTypefaceSuitability();
|
|
}
|
|
|
|
Font Font::boldened() const { return withStyle (getStyleFlags() | bold); }
|
|
Font Font::italicised() const { return withStyle (getStyleFlags() | italic); }
|
|
|
|
bool Font::isBold() const noexcept { return FontStyleHelpers::isBold (font->getTypefaceStyle()); }
|
|
bool Font::isItalic() const noexcept { return FontStyleHelpers::isItalic (font->getTypefaceStyle()); }
|
|
bool Font::isUnderlined() const noexcept { return font->getUnderline(); }
|
|
|
|
void Font::setBold (const bool shouldBeBold)
|
|
{
|
|
auto flags = getStyleFlags();
|
|
setStyleFlags (shouldBeBold ? (flags | bold)
|
|
: (flags & ~bold));
|
|
}
|
|
|
|
void Font::setItalic (const bool shouldBeItalic)
|
|
{
|
|
auto flags = getStyleFlags();
|
|
setStyleFlags (shouldBeItalic ? (flags | italic)
|
|
: (flags & ~italic));
|
|
}
|
|
|
|
void Font::setUnderline (const bool shouldBeUnderlined)
|
|
{
|
|
dupeInternalIfShared();
|
|
font->setUnderline (shouldBeUnderlined);
|
|
checkTypefaceSuitability();
|
|
}
|
|
|
|
float Font::getAscent() const
|
|
{
|
|
return font->getAscent (*this);
|
|
}
|
|
|
|
float Font::getHeight() const noexcept { return font->getHeight(); }
|
|
float Font::getDescent() const { return font->getHeight() - getAscent(); }
|
|
|
|
float Font::getHeightInPoints() const { return getHeight() * getHeightToPointsFactor(); }
|
|
float Font::getAscentInPoints() const { return getAscent() * getHeightToPointsFactor(); }
|
|
float Font::getDescentInPoints() const { return getDescent() * getHeightToPointsFactor(); }
|
|
|
|
int Font::getStringWidth (const String& text) const
|
|
{
|
|
return (int) std::ceil (getStringWidthFloat (text));
|
|
}
|
|
|
|
float Font::getStringWidthFloat (const String& text) const
|
|
{
|
|
auto w = getTypefacePtr()->getStringWidth (text);
|
|
|
|
if (font->getKerning() != 0.0f)
|
|
w += font->getKerning() * (float) text.length();
|
|
|
|
return w * font->getHeight() * font->getHorizontalScale();
|
|
}
|
|
|
|
void Font::getGlyphPositions (const String& text, Array<int>& glyphs, Array<float>& xOffsets) const
|
|
{
|
|
getTypefacePtr()->getGlyphPositions (text, glyphs, xOffsets);
|
|
|
|
if (auto num = xOffsets.size())
|
|
{
|
|
auto scale = font->getHeight() * font->getHorizontalScale();
|
|
auto* x = xOffsets.getRawDataPointer();
|
|
|
|
if (font->getKerning() != 0.0f)
|
|
{
|
|
for (int i = 0; i < num; ++i)
|
|
x[i] = (x[i] + (float) i * font->getKerning()) * scale;
|
|
}
|
|
else
|
|
{
|
|
for (int i = 0; i < num; ++i)
|
|
x[i] *= scale;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Font::findFonts (Array<Font>& destArray)
|
|
{
|
|
for (auto& name : findAllTypefaceNames())
|
|
{
|
|
auto styles = findAllTypefaceStyles (name);
|
|
|
|
String style ("Regular");
|
|
|
|
if (! styles.contains (style, true))
|
|
style = styles[0];
|
|
|
|
destArray.add (Font (name, style, FontValues::defaultFontHeight));
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
String Font::toString() const
|
|
{
|
|
String s;
|
|
|
|
if (getTypefaceName() != getDefaultSansSerifFontName())
|
|
s << getTypefaceName() << "; ";
|
|
|
|
s << String (getHeight(), 1);
|
|
|
|
if (getTypefaceStyle() != getDefaultStyle())
|
|
s << ' ' << getTypefaceStyle();
|
|
|
|
return s;
|
|
}
|
|
|
|
Font Font::fromString (const String& fontDescription)
|
|
{
|
|
const int separator = fontDescription.indexOfChar (';');
|
|
String name;
|
|
|
|
if (separator > 0)
|
|
name = fontDescription.substring (0, separator).trim();
|
|
|
|
if (name.isEmpty())
|
|
name = getDefaultSansSerifFontName();
|
|
|
|
String sizeAndStyle (fontDescription.substring (separator + 1).trimStart());
|
|
|
|
float height = sizeAndStyle.getFloatValue();
|
|
if (height <= 0)
|
|
height = 10.0f;
|
|
|
|
const String style (sizeAndStyle.fromFirstOccurrenceOf (" ", false, false));
|
|
|
|
return Font (name, style, height);
|
|
}
|
|
|
|
} // namespace juce
|