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https://github.com/juce-framework/JUCE.git
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2706 lines
104 KiB
C++
2706 lines
104 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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struct GraphicsFontHelpers
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{
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static auto compareFont (const Font& a, const Font& b) { return Font::compare (a, b); }
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};
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}
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namespace juce::RenderingHelpers
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{
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JUCE_BEGIN_IGNORE_WARNINGS_MSVC (4127)
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//==============================================================================
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/** Holds either a simple integer translation, or an affine transform.
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@tags{Graphics}
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*/
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class TranslationOrTransform
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{
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public:
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TranslationOrTransform() = default;
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TranslationOrTransform (Point<int> origin) noexcept : offset (origin) {}
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TranslationOrTransform (const TranslationOrTransform& other) = default;
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AffineTransform getTransform() const noexcept
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{
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return isOnlyTranslated ? AffineTransform::translation (offset)
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: complexTransform;
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}
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AffineTransform getTransformWith (const AffineTransform& userTransform) const noexcept
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{
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return isOnlyTranslated ? userTransform.translated (offset)
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: userTransform.followedBy (complexTransform);
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}
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bool isIdentity() const noexcept
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{
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return isOnlyTranslated && offset.isOrigin();
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}
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void setOrigin (Point<int> delta) noexcept
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{
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if (isOnlyTranslated)
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offset += delta;
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else
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complexTransform = AffineTransform::translation (delta)
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.followedBy (complexTransform);
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}
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void addTransform (const AffineTransform& t) noexcept
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{
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if (isOnlyTranslated && t.isOnlyTranslation())
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{
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auto tx = (int) (t.getTranslationX() * 256.0f);
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auto ty = (int) (t.getTranslationY() * 256.0f);
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if (((tx | ty) & 0xf8) == 0)
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{
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offset += Point<int> (tx >> 8, ty >> 8);
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return;
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}
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}
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complexTransform = getTransformWith (t);
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isOnlyTranslated = false;
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isRotated = (! approximatelyEqual (complexTransform.mat01, 0.0f)
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|| ! approximatelyEqual (complexTransform.mat10, 0.0f)
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|| complexTransform.mat00 < 0
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|| complexTransform.mat11 < 0);
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}
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float getPhysicalPixelScaleFactor() const noexcept
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{
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return isOnlyTranslated ? 1.0f : std::sqrt (std::abs (complexTransform.getDeterminant()));
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}
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void moveOriginInDeviceSpace (Point<int> delta) noexcept
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{
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if (isOnlyTranslated)
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offset += delta;
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else
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complexTransform = complexTransform.translated (delta);
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}
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Rectangle<int> translated (Rectangle<int> r) const noexcept
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{
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jassert (isOnlyTranslated);
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return r + offset;
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}
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Rectangle<float> translated (Rectangle<float> r) const noexcept
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{
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jassert (isOnlyTranslated);
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return r + offset.toFloat();
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}
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auto boundsAfterTransform (Rectangle<float> r) const noexcept
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{
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jassert (! isOnlyTranslated);
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return r.transformedBy (complexTransform);
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}
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template <typename RectangleOrPoint>
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auto transformed (RectangleOrPoint r) const noexcept
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{
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jassert (! isOnlyTranslated);
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return r.transformedBy (complexTransform);
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}
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auto boundsAfterTransform (const RectangleList<float>& r) const noexcept
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{
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jassert (! isOnlyTranslated);
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return boundsAfterTransform (r.getBounds());
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}
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auto boundsAfterTransform (Line<float> r) const noexcept
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{
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jassert (! isOnlyTranslated);
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return Line { transformed (r.getStart()), transformed (r.getEnd()) };
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}
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template <typename Type>
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Rectangle<float> deviceSpaceToUserSpace (Rectangle<Type> r) const noexcept
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{
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return isOnlyTranslated ? r.toFloat() - offset.toFloat()
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: r.toFloat().transformedBy (complexTransform.inverted());
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}
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AffineTransform complexTransform;
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Point<int> offset;
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bool isOnlyTranslated = true, isRotated = false;
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};
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//==============================================================================
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/** Holds a cache of recently-used glyph objects of some type.
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@tags{Graphics}
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*/
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class GlyphCache : private DeletedAtShutdown
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{
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public:
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GlyphCache() = default;
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~GlyphCache() override
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{
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getSingletonPointer() = nullptr;
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}
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static GlyphCache& getInstance()
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{
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auto& g = getSingletonPointer();
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if (g == nullptr)
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g = new GlyphCache();
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return *g;
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}
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//==============================================================================
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void reset()
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{
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cache.clear();
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}
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const auto& get (const Font& font, const int glyphNumber)
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{
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return cache.get (Key { font, glyphNumber }, [] (const auto& key)
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{
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auto fontHeight = detail::FontRendering::getEffectiveHeight (key.font);
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auto typeface = key.font.getTypefacePtr();
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return typeface->getLayersForGlyph (key.font.getMetricsKind(),
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key.glyph,
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AffineTransform::scale (fontHeight * key.font.getHorizontalScale(),
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fontHeight));
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});
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}
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private:
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struct Key
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{
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Font font;
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int glyph;
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bool operator< (const Key& other) const
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{
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if (glyph < other.glyph)
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return true;
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if (other.glyph < glyph)
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return false;
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return GraphicsFontHelpers::compareFont (font, other.font);
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}
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};
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LruCache<Key, std::vector<GlyphLayer>> cache;
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static GlyphCache*& getSingletonPointer() noexcept
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{
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static GlyphCache* g = nullptr;
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return g;
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}
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (GlyphCache)
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};
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//==============================================================================
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/** Calculates the alpha values and positions for rendering the edges of a
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non-pixel-aligned rectangle.
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@tags{Graphics}
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*/
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struct FloatRectangleRasterisingInfo
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{
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FloatRectangleRasterisingInfo (Rectangle<float> area)
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: left (roundToInt (256.0f * area.getX())),
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top (roundToInt (256.0f * area.getY())),
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right (roundToInt (256.0f * area.getRight())),
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bottom (roundToInt (256.0f * area.getBottom()))
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{
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if ((top >> 8) == (bottom >> 8))
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{
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topAlpha = bottom - top;
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bottomAlpha = 0;
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totalTop = top >> 8;
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totalBottom = bottom = top = totalTop + 1;
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}
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else
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{
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if ((top & 255) == 0)
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{
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topAlpha = 0;
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top = totalTop = (top >> 8);
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}
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else
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{
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topAlpha = 255 - (top & 255);
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totalTop = (top >> 8);
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top = totalTop + 1;
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}
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bottomAlpha = bottom & 255;
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bottom >>= 8;
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totalBottom = bottom + (bottomAlpha != 0 ? 1 : 0);
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}
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if ((left >> 8) == (right >> 8))
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{
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leftAlpha = right - left;
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rightAlpha = 0;
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totalLeft = (left >> 8);
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totalRight = right = left = totalLeft + 1;
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}
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else
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{
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if ((left & 255) == 0)
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{
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leftAlpha = 0;
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left = totalLeft = (left >> 8);
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}
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else
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{
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leftAlpha = 255 - (left & 255);
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totalLeft = (left >> 8);
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left = totalLeft + 1;
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}
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rightAlpha = right & 255;
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right >>= 8;
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totalRight = right + (rightAlpha != 0 ? 1 : 0);
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}
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}
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template <class Callback>
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void iterate (Callback& callback) const
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{
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if (topAlpha != 0) callback (totalLeft, totalTop, totalRight - totalLeft, 1, topAlpha);
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if (bottomAlpha != 0) callback (totalLeft, bottom, totalRight - totalLeft, 1, bottomAlpha);
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if (leftAlpha != 0) callback (totalLeft, totalTop, 1, totalBottom - totalTop, leftAlpha);
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if (rightAlpha != 0) callback (right, totalTop, 1, totalBottom - totalTop, rightAlpha);
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callback (left, top, right - left, bottom - top, 255);
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}
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inline bool isOnePixelWide() const noexcept { return right - left == 1 && leftAlpha + rightAlpha == 0; }
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inline int getTopLeftCornerAlpha() const noexcept { return (topAlpha * leftAlpha) >> 8; }
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inline int getTopRightCornerAlpha() const noexcept { return (topAlpha * rightAlpha) >> 8; }
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inline int getBottomLeftCornerAlpha() const noexcept { return (bottomAlpha * leftAlpha) >> 8; }
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inline int getBottomRightCornerAlpha() const noexcept { return (bottomAlpha * rightAlpha) >> 8; }
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//==============================================================================
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int left, top, right, bottom; // bounds of the solid central area, excluding anti-aliased edges
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int totalTop, totalLeft, totalBottom, totalRight; // bounds of the total area, including edges
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int topAlpha, leftAlpha, bottomAlpha, rightAlpha; // alpha of each anti-aliased edge
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};
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// Line::findNearestPointTo will always return a point between the line's start and end, whereas
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// this version assumes that the line is infinite.
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static Point<float> closestPointOnInfiniteLine (const Line<float>& line, const Point<float>& point)
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{
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const Line perpendicularThroughPoint { point, point + line.getPointAlongLine (0.0f, 1.0f) - line.getStart() };
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return line.getIntersection (perpendicularThroughPoint);
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}
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//==============================================================================
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/** Contains classes for calculating the colour of pixels within various types of gradient. */
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namespace GradientPixelIterators
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{
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/** Iterates the colour of pixels in a linear gradient */
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struct Linear
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{
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Linear (const ColourGradient& gradient, const AffineTransform& transform,
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const PixelARGB* colours, int numColours)
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: lookupTable (colours),
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numEntries (numColours)
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{
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jassert (numColours >= 0);
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auto p1 = gradient.point1;
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auto p2 = gradient.point2;
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if (! transform.isIdentity())
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{
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auto p3 = Line<float> (p2, p1).getPointAlongLine (0.0f, 100.0f);
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p1.applyTransform (transform);
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p2.applyTransform (transform);
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p3.applyTransform (transform);
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p2 = closestPointOnInfiniteLine ({ p2, p3 }, p1);
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}
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vertical = std::abs (p1.x - p2.x) < 0.001f;
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horizontal = std::abs (p1.y - p2.y) < 0.001f;
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if (vertical)
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{
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scale = roundToInt ((double) ((int64_t) numEntries << (int) numScaleBits) / (double) (p2.y - p1.y));
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start = roundToInt (p1.y * (float) scale);
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}
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else if (horizontal)
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{
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scale = roundToInt ((double) ((int64_t) numEntries << (int) numScaleBits) / (double) (p2.x - p1.x));
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start = roundToInt (p1.x * (float) scale);
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}
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else
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{
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grad = (p2.y - p1.y) / (double) (p1.x - p2.x);
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yTerm = p1.y - (p1.x / grad);
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scale = roundToInt ((double) ((int64_t) numEntries << (int) numScaleBits) / (yTerm * grad - (p2.y * grad - p2.x)));
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grad *= scale;
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}
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}
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forcedinline void setY (int y) noexcept
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{
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if (vertical)
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linePix = lookupTable[jlimit (0, numEntries, (y * scale - start) >> (int) numScaleBits)];
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else if (! horizontal)
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start = roundToInt ((y - yTerm) * grad);
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}
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inline PixelARGB getPixel (int x) const noexcept
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{
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return vertical ? linePix
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: lookupTable[jlimit (0, numEntries, (x * scale - start) >> (int) numScaleBits)];
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}
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const PixelARGB* const lookupTable;
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const int numEntries;
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PixelARGB linePix;
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int start, scale;
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double grad, yTerm;
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bool vertical, horizontal;
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enum { numScaleBits = 12 };
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JUCE_DECLARE_NON_COPYABLE (Linear)
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};
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//==============================================================================
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/** Iterates the colour of pixels in a circular radial gradient */
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struct Radial
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{
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Radial (const ColourGradient& gradient, const AffineTransform&,
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const PixelARGB* colours, int numColours)
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: lookupTable (colours),
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numEntries (numColours),
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gx1 (gradient.point1.x),
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gy1 (gradient.point1.y)
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{
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jassert (numColours >= 0);
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auto diff = gradient.point1 - gradient.point2;
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maxDist = diff.x * diff.x + diff.y * diff.y;
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invScale = numEntries / std::sqrt (maxDist);
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jassert (roundToInt (std::sqrt (maxDist) * invScale) <= numEntries);
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}
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forcedinline void setY (int y) noexcept
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{
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dy = y - gy1;
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dy *= dy;
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}
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inline PixelARGB getPixel (int px) const noexcept
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{
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auto x = px - gx1;
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x *= x;
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x += dy;
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return lookupTable[x >= maxDist ? numEntries : roundToInt (std::sqrt (x) * invScale)];
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}
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const PixelARGB* const lookupTable;
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const int numEntries;
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const double gx1, gy1;
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double maxDist, invScale, dy;
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JUCE_DECLARE_NON_COPYABLE (Radial)
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};
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//==============================================================================
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/** Iterates the colour of pixels in a skewed radial gradient */
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struct TransformedRadial : public Radial
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{
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TransformedRadial (const ColourGradient& gradient, const AffineTransform& transform,
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const PixelARGB* colours, int numColours)
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: Radial (gradient, transform, colours, numColours),
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inverseTransform (transform.inverted())
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{
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tM10 = inverseTransform.mat10;
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tM00 = inverseTransform.mat00;
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}
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forcedinline void setY (int y) noexcept
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{
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auto floatY = (float) y;
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lineYM01 = inverseTransform.mat01 * floatY + inverseTransform.mat02 - gx1;
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lineYM11 = inverseTransform.mat11 * floatY + inverseTransform.mat12 - gy1;
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}
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inline PixelARGB getPixel (int px) const noexcept
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{
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double x = px;
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auto y = tM10 * x + lineYM11;
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x = tM00 * x + lineYM01;
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x *= x;
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x += y * y;
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if (x >= maxDist)
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return lookupTable[numEntries];
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return lookupTable[jmin (numEntries, roundToInt (std::sqrt (x) * invScale))];
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}
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private:
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double tM10, tM00, lineYM01, lineYM11;
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const AffineTransform inverseTransform;
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JUCE_DECLARE_NON_COPYABLE (TransformedRadial)
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};
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}
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#define JUCE_PERFORM_PIXEL_OP_LOOP(op) \
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{ \
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const int destStride = destData.pixelStride; \
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do { dest->op; dest = addBytesToPointer (dest, destStride); } while (--width > 0); \
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}
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//==============================================================================
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/** Contains classes for filling edge tables with various fill types. */
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namespace EdgeTableFillers
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{
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/** Fills an edge-table with a solid colour. */
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template <class PixelType, bool replaceExisting = false>
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struct SolidColour
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{
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SolidColour (const Image::BitmapData& image, PixelARGB colour)
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: destData (image), sourceColour (colour)
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{
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if (sizeof (PixelType) == 3 && (size_t) destData.pixelStride == sizeof (PixelType))
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areRGBComponentsEqual = sourceColour.getRed() == sourceColour.getGreen()
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&& sourceColour.getGreen() == sourceColour.getBlue();
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else
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areRGBComponentsEqual = false;
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}
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forcedinline void setEdgeTableYPos (int y) noexcept
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{
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linePixels = (PixelType*) destData.getLinePointer (y);
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}
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forcedinline void handleEdgeTablePixel (int x, int alphaLevel) const noexcept
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{
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if (replaceExisting)
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getPixel (x)->set (sourceColour);
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else
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getPixel (x)->blend (sourceColour, (uint32) alphaLevel);
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}
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forcedinline void handleEdgeTablePixelFull (int x) const noexcept
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{
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if (replaceExisting)
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getPixel (x)->set (sourceColour);
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else
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getPixel (x)->blend (sourceColour);
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}
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forcedinline void handleEdgeTableLine (int x, int width, int alphaLevel) const noexcept
|
|
{
|
|
auto p = sourceColour;
|
|
p.multiplyAlpha (alphaLevel);
|
|
|
|
auto* dest = getPixel (x);
|
|
|
|
if (replaceExisting || p.getAlpha() >= 0xff)
|
|
replaceLine (dest, p, width);
|
|
else
|
|
blendLine (dest, p, width);
|
|
}
|
|
|
|
forcedinline void handleEdgeTableLineFull (int x, int width) const noexcept
|
|
{
|
|
auto* dest = getPixel (x);
|
|
|
|
if (replaceExisting || sourceColour.getAlpha() >= 0xff)
|
|
replaceLine (dest, sourceColour, width);
|
|
else
|
|
blendLine (dest, sourceColour, width);
|
|
}
|
|
|
|
void handleEdgeTableRectangle (int x, int y, int width, int height, int alphaLevel) noexcept
|
|
{
|
|
auto p = sourceColour;
|
|
p.multiplyAlpha (alphaLevel);
|
|
|
|
setEdgeTableYPos (y);
|
|
auto* dest = getPixel (x);
|
|
|
|
if (replaceExisting || p.getAlpha() >= 0xff)
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
replaceLine (dest, p, width);
|
|
dest = addBytesToPointer (dest, destData.lineStride);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
blendLine (dest, p, width);
|
|
dest = addBytesToPointer (dest, destData.lineStride);
|
|
}
|
|
}
|
|
}
|
|
|
|
void handleEdgeTableRectangleFull (int x, int y, int width, int height) noexcept
|
|
{
|
|
handleEdgeTableRectangle (x, y, width, height, 255);
|
|
}
|
|
|
|
private:
|
|
const Image::BitmapData& destData;
|
|
PixelType* linePixels;
|
|
PixelARGB sourceColour;
|
|
bool areRGBComponentsEqual;
|
|
|
|
forcedinline PixelType* getPixel (int x) const noexcept
|
|
{
|
|
return addBytesToPointer (linePixels, x * destData.pixelStride);
|
|
}
|
|
|
|
inline void blendLine (PixelType* dest, PixelARGB colour, int width) const noexcept
|
|
{
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (colour))
|
|
}
|
|
|
|
forcedinline void replaceLine (PixelRGB* dest, PixelARGB colour, int width) const noexcept
|
|
{
|
|
if ((size_t) destData.pixelStride == sizeof (*dest) && areRGBComponentsEqual)
|
|
memset ((void*) dest, colour.getRed(), (size_t) width * 3); // if all the component values are the same, we can cheat..
|
|
else
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (set (colour));
|
|
}
|
|
|
|
forcedinline void replaceLine (PixelAlpha* dest, const PixelARGB colour, int width) const noexcept
|
|
{
|
|
if ((size_t) destData.pixelStride == sizeof (*dest))
|
|
memset ((void*) dest, colour.getAlpha(), (size_t) width);
|
|
else
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (setAlpha (colour.getAlpha()))
|
|
}
|
|
|
|
forcedinline void replaceLine (PixelARGB* dest, const PixelARGB colour, int width) const noexcept
|
|
{
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (set (colour))
|
|
}
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (SolidColour)
|
|
};
|
|
|
|
//==============================================================================
|
|
/** Fills an edge-table with a gradient. */
|
|
template <class PixelType, class GradientType>
|
|
struct Gradient : public GradientType
|
|
{
|
|
Gradient (const Image::BitmapData& dest, const ColourGradient& gradient, const AffineTransform& transform,
|
|
const PixelARGB* colours, int numColours)
|
|
: GradientType (gradient, transform, colours, numColours - 1),
|
|
destData (dest)
|
|
{
|
|
}
|
|
|
|
forcedinline void setEdgeTableYPos (int y) noexcept
|
|
{
|
|
linePixels = (PixelType*) destData.getLinePointer (y);
|
|
GradientType::setY (y);
|
|
}
|
|
|
|
forcedinline void handleEdgeTablePixel (int x, int alphaLevel) const noexcept
|
|
{
|
|
getPixel (x)->blend (GradientType::getPixel (x), (uint32) alphaLevel);
|
|
}
|
|
|
|
forcedinline void handleEdgeTablePixelFull (int x) const noexcept
|
|
{
|
|
getPixel (x)->blend (GradientType::getPixel (x));
|
|
}
|
|
|
|
void handleEdgeTableLine (int x, int width, int alphaLevel) const noexcept
|
|
{
|
|
auto* dest = getPixel (x);
|
|
|
|
if (alphaLevel < 0xff)
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (GradientType::getPixel (x++), (uint32) alphaLevel))
|
|
else
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (GradientType::getPixel (x++)))
|
|
}
|
|
|
|
void handleEdgeTableLineFull (int x, int width) const noexcept
|
|
{
|
|
auto* dest = getPixel (x);
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (GradientType::getPixel (x++)))
|
|
}
|
|
|
|
void handleEdgeTableRectangle (int x, int y, int width, int height, int alphaLevel) noexcept
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
setEdgeTableYPos (y++);
|
|
handleEdgeTableLine (x, width, alphaLevel);
|
|
}
|
|
}
|
|
|
|
void handleEdgeTableRectangleFull (int x, int y, int width, int height) noexcept
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
setEdgeTableYPos (y++);
|
|
handleEdgeTableLineFull (x, width);
|
|
}
|
|
}
|
|
|
|
private:
|
|
const Image::BitmapData& destData;
|
|
PixelType* linePixels;
|
|
|
|
forcedinline PixelType* getPixel (int x) const noexcept
|
|
{
|
|
return addBytesToPointer (linePixels, x * destData.pixelStride);
|
|
}
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (Gradient)
|
|
};
|
|
|
|
//==============================================================================
|
|
/** Fills an edge-table with a non-transformed image. */
|
|
template <class DestPixelType, class SrcPixelType, bool repeatPattern>
|
|
struct ImageFill
|
|
{
|
|
ImageFill (const Image::BitmapData& dest, const Image::BitmapData& src, int alpha, int x, int y)
|
|
: destData (dest),
|
|
srcData (src),
|
|
extraAlpha (alpha + 1),
|
|
xOffset (repeatPattern ? negativeAwareModulo (x, src.width) - src.width : x),
|
|
yOffset (repeatPattern ? negativeAwareModulo (y, src.height) - src.height : y)
|
|
{
|
|
}
|
|
|
|
forcedinline void setEdgeTableYPos (int y) noexcept
|
|
{
|
|
linePixels = (DestPixelType*) destData.getLinePointer (y);
|
|
y -= yOffset;
|
|
|
|
if (repeatPattern)
|
|
{
|
|
jassert (y >= 0);
|
|
y %= srcData.height;
|
|
}
|
|
|
|
sourceLineStart = (SrcPixelType*) srcData.getLinePointer (y);
|
|
}
|
|
|
|
forcedinline void handleEdgeTablePixel (int x, int alphaLevel) const noexcept
|
|
{
|
|
alphaLevel = (alphaLevel * extraAlpha) >> 8;
|
|
|
|
getDestPixel (x)->blend (*getSrcPixel (repeatPattern ? ((x - xOffset) % srcData.width) : (x - xOffset)), (uint32) alphaLevel);
|
|
}
|
|
|
|
forcedinline void handleEdgeTablePixelFull (int x) const noexcept
|
|
{
|
|
getDestPixel (x)->blend (*getSrcPixel (repeatPattern ? ((x - xOffset) % srcData.width) : (x - xOffset)), (uint32) extraAlpha);
|
|
}
|
|
|
|
void handleEdgeTableLine (int x, int width, int alphaLevel) const noexcept
|
|
{
|
|
auto* dest = getDestPixel (x);
|
|
alphaLevel = (alphaLevel * extraAlpha) >> 8;
|
|
x -= xOffset;
|
|
|
|
if (repeatPattern)
|
|
{
|
|
if (alphaLevel < 0xfe)
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*getSrcPixel (x++ % srcData.width), (uint32) alphaLevel))
|
|
else
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*getSrcPixel (x++ % srcData.width)))
|
|
}
|
|
else
|
|
{
|
|
jassert (x >= 0 && x + width <= srcData.width);
|
|
|
|
if (alphaLevel < 0xfe)
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*getSrcPixel (x++), (uint32) alphaLevel))
|
|
else
|
|
copyRow (dest, getSrcPixel (x), width);
|
|
}
|
|
}
|
|
|
|
void handleEdgeTableLineFull (int x, int width) const noexcept
|
|
{
|
|
auto* dest = getDestPixel (x);
|
|
x -= xOffset;
|
|
|
|
if (repeatPattern)
|
|
{
|
|
if (extraAlpha < 0xfe)
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*getSrcPixel (x++ % srcData.width), (uint32) extraAlpha))
|
|
else
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*getSrcPixel (x++ % srcData.width)))
|
|
}
|
|
else
|
|
{
|
|
jassert (x >= 0 && x + width <= srcData.width);
|
|
|
|
if (extraAlpha < 0xfe)
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*getSrcPixel (x++), (uint32) extraAlpha))
|
|
else
|
|
copyRow (dest, getSrcPixel (x), width);
|
|
}
|
|
}
|
|
|
|
void handleEdgeTableRectangle (int x, int y, int width, int height, int alphaLevel) noexcept
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
setEdgeTableYPos (y++);
|
|
handleEdgeTableLine (x, width, alphaLevel);
|
|
}
|
|
}
|
|
|
|
void handleEdgeTableRectangleFull (int x, int y, int width, int height) noexcept
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
setEdgeTableYPos (y++);
|
|
handleEdgeTableLineFull (x, width);
|
|
}
|
|
}
|
|
|
|
void clipEdgeTableLine (EdgeTable& et, int x, int y, int width)
|
|
{
|
|
jassert (x - xOffset >= 0 && x + width - xOffset <= srcData.width);
|
|
auto* s = (SrcPixelType*) srcData.getLinePointer (y - yOffset);
|
|
auto* mask = (uint8*) (s + x - xOffset);
|
|
|
|
if (sizeof (SrcPixelType) == sizeof (PixelARGB))
|
|
mask += PixelARGB::indexA;
|
|
|
|
et.clipLineToMask (x, y, mask, sizeof (SrcPixelType), width);
|
|
}
|
|
|
|
private:
|
|
const Image::BitmapData& destData;
|
|
const Image::BitmapData& srcData;
|
|
const int extraAlpha, xOffset, yOffset;
|
|
DestPixelType* linePixels;
|
|
SrcPixelType* sourceLineStart;
|
|
|
|
forcedinline DestPixelType* getDestPixel (int x) const noexcept
|
|
{
|
|
return addBytesToPointer (linePixels, x * destData.pixelStride);
|
|
}
|
|
|
|
forcedinline SrcPixelType const* getSrcPixel (int x) const noexcept
|
|
{
|
|
return addBytesToPointer (sourceLineStart, x * srcData.pixelStride);
|
|
}
|
|
|
|
forcedinline void copyRow (DestPixelType* dest, SrcPixelType const* src, int width) const noexcept
|
|
{
|
|
auto destStride = destData.pixelStride;
|
|
auto srcStride = srcData.pixelStride;
|
|
|
|
if (destStride == srcStride
|
|
&& srcData.pixelFormat == Image::RGB
|
|
&& destData.pixelFormat == Image::RGB)
|
|
{
|
|
memcpy ((void*) dest, src, (size_t) (width * srcStride));
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
dest->blend (*src);
|
|
dest = addBytesToPointer (dest, destStride);
|
|
src = addBytesToPointer (src, srcStride);
|
|
} while (--width > 0);
|
|
}
|
|
}
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (ImageFill)
|
|
};
|
|
|
|
//==============================================================================
|
|
/** Fills an edge-table with a transformed image. */
|
|
template <class DestPixelType, class SrcPixelType, bool repeatPattern>
|
|
struct TransformedImageFill
|
|
{
|
|
TransformedImageFill (const Image::BitmapData& dest, const Image::BitmapData& src,
|
|
const AffineTransform& transform, int alpha, Graphics::ResamplingQuality q)
|
|
: interpolator (transform,
|
|
q != Graphics::lowResamplingQuality ? 0.5f : 0.0f,
|
|
q != Graphics::lowResamplingQuality ? -128 : 0),
|
|
destData (dest),
|
|
srcData (src),
|
|
extraAlpha (alpha + 1),
|
|
quality (q),
|
|
maxX (src.width - 1),
|
|
maxY (src.height - 1)
|
|
{
|
|
scratchBuffer.malloc (scratchSize);
|
|
}
|
|
|
|
forcedinline void setEdgeTableYPos (int newY) noexcept
|
|
{
|
|
currentY = newY;
|
|
linePixels = (DestPixelType*) destData.getLinePointer (newY);
|
|
}
|
|
|
|
forcedinline void handleEdgeTablePixel (int x, int alphaLevel) noexcept
|
|
{
|
|
SrcPixelType p;
|
|
generate (&p, x, 1);
|
|
|
|
getDestPixel (x)->blend (p, (uint32) (alphaLevel * extraAlpha) >> 8);
|
|
}
|
|
|
|
forcedinline void handleEdgeTablePixelFull (int x) noexcept
|
|
{
|
|
SrcPixelType p;
|
|
generate (&p, x, 1);
|
|
|
|
getDestPixel (x)->blend (p, (uint32) extraAlpha);
|
|
}
|
|
|
|
void handleEdgeTableLine (int x, int width, int alphaLevel) noexcept
|
|
{
|
|
if (width > (int) scratchSize)
|
|
{
|
|
scratchSize = (size_t) width;
|
|
scratchBuffer.malloc (scratchSize);
|
|
}
|
|
|
|
SrcPixelType* span = scratchBuffer;
|
|
generate (span, x, width);
|
|
|
|
auto* dest = getDestPixel (x);
|
|
alphaLevel *= extraAlpha;
|
|
alphaLevel >>= 8;
|
|
|
|
if (alphaLevel < 0xfe)
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*span++, (uint32) alphaLevel))
|
|
else
|
|
JUCE_PERFORM_PIXEL_OP_LOOP (blend (*span++))
|
|
}
|
|
|
|
forcedinline void handleEdgeTableLineFull (int x, int width) noexcept
|
|
{
|
|
handleEdgeTableLine (x, width, 255);
|
|
}
|
|
|
|
void handleEdgeTableRectangle (int x, int y, int width, int height, int alphaLevel) noexcept
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
setEdgeTableYPos (y++);
|
|
handleEdgeTableLine (x, width, alphaLevel);
|
|
}
|
|
}
|
|
|
|
void handleEdgeTableRectangleFull (int x, int y, int width, int height) noexcept
|
|
{
|
|
while (--height >= 0)
|
|
{
|
|
setEdgeTableYPos (y++);
|
|
handleEdgeTableLineFull (x, width);
|
|
}
|
|
}
|
|
|
|
void clipEdgeTableLine (EdgeTable& et, int x, int y, int width)
|
|
{
|
|
if (width > (int) scratchSize)
|
|
{
|
|
scratchSize = (size_t) width;
|
|
scratchBuffer.malloc (scratchSize);
|
|
}
|
|
|
|
currentY = y;
|
|
generate (scratchBuffer.get(), x, width);
|
|
|
|
et.clipLineToMask (x, y,
|
|
reinterpret_cast<uint8*> (scratchBuffer.get()) + SrcPixelType::indexA,
|
|
sizeof (SrcPixelType), width);
|
|
}
|
|
|
|
private:
|
|
forcedinline DestPixelType* getDestPixel (int x) const noexcept
|
|
{
|
|
return addBytesToPointer (linePixels, x * destData.pixelStride);
|
|
}
|
|
|
|
//==============================================================================
|
|
template <class PixelType>
|
|
void generate (PixelType* dest, int x, int numPixels) noexcept
|
|
{
|
|
this->interpolator.setStartOfLine ((float) x, (float) currentY, numPixels);
|
|
|
|
do
|
|
{
|
|
int hiResX, hiResY;
|
|
this->interpolator.next (hiResX, hiResY);
|
|
|
|
int loResX = hiResX >> 8;
|
|
int loResY = hiResY >> 8;
|
|
|
|
if (repeatPattern)
|
|
{
|
|
loResX = negativeAwareModulo (loResX, srcData.width);
|
|
loResY = negativeAwareModulo (loResY, srcData.height);
|
|
}
|
|
|
|
if (quality != Graphics::lowResamplingQuality)
|
|
{
|
|
if (isPositiveAndBelow (loResX, maxX))
|
|
{
|
|
if (isPositiveAndBelow (loResY, maxY))
|
|
{
|
|
// In the centre of the image..
|
|
render4PixelAverage (dest, this->srcData.getPixelPointer (loResX, loResY),
|
|
hiResX & 255, hiResY & 255);
|
|
++dest;
|
|
continue;
|
|
}
|
|
|
|
if (! repeatPattern)
|
|
{
|
|
// At a top or bottom edge..
|
|
if (loResY < 0)
|
|
render2PixelAverageX (dest, this->srcData.getPixelPointer (loResX, 0), hiResX & 255);
|
|
else
|
|
render2PixelAverageX (dest, this->srcData.getPixelPointer (loResX, maxY), hiResX & 255);
|
|
|
|
++dest;
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (isPositiveAndBelow (loResY, maxY) && ! repeatPattern)
|
|
{
|
|
// At a left or right hand edge..
|
|
if (loResX < 0)
|
|
render2PixelAverageY (dest, this->srcData.getPixelPointer (0, loResY), hiResY & 255);
|
|
else
|
|
render2PixelAverageY (dest, this->srcData.getPixelPointer (maxX, loResY), hiResY & 255);
|
|
|
|
++dest;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (! repeatPattern)
|
|
{
|
|
if (loResX < 0) loResX = 0;
|
|
if (loResY < 0) loResY = 0;
|
|
if (loResX > maxX) loResX = maxX;
|
|
if (loResY > maxY) loResY = maxY;
|
|
}
|
|
|
|
dest->set (*(const PixelType*) this->srcData.getPixelPointer (loResX, loResY));
|
|
++dest;
|
|
|
|
} while (--numPixels > 0);
|
|
}
|
|
|
|
//==============================================================================
|
|
void render4PixelAverage (PixelARGB* dest, const uint8* src, int subPixelX, int subPixelY) noexcept
|
|
{
|
|
uint32 c[4] = { 256 * 128, 256 * 128, 256 * 128, 256 * 128 };
|
|
|
|
auto weight = (uint32) ((256 - subPixelX) * (256 - subPixelY));
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
src += this->srcData.pixelStride;
|
|
|
|
weight = (uint32) (subPixelX * (256 - subPixelY));
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
src += this->srcData.lineStride;
|
|
|
|
weight = (uint32) (subPixelX * subPixelY);
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
src -= this->srcData.pixelStride;
|
|
|
|
weight = (uint32) ((256 - subPixelX) * subPixelY);
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
dest->setARGB ((uint8) (c[PixelARGB::indexA] >> 16),
|
|
(uint8) (c[PixelARGB::indexR] >> 16),
|
|
(uint8) (c[PixelARGB::indexG] >> 16),
|
|
(uint8) (c[PixelARGB::indexB] >> 16));
|
|
}
|
|
|
|
void render2PixelAverageX (PixelARGB* dest, const uint8* src, uint32 subPixelX) noexcept
|
|
{
|
|
uint32 c[4] = { 128, 128, 128, 128 };
|
|
|
|
uint32 weight = 256 - subPixelX;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
src += this->srcData.pixelStride;
|
|
|
|
weight = subPixelX;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
dest->setARGB ((uint8) (c[PixelARGB::indexA] >> 8),
|
|
(uint8) (c[PixelARGB::indexR] >> 8),
|
|
(uint8) (c[PixelARGB::indexG] >> 8),
|
|
(uint8) (c[PixelARGB::indexB] >> 8));
|
|
}
|
|
|
|
void render2PixelAverageY (PixelARGB* dest, const uint8* src, uint32 subPixelY) noexcept
|
|
{
|
|
uint32 c[4] = { 128, 128, 128, 128 };
|
|
|
|
uint32 weight = 256 - subPixelY;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
src += this->srcData.lineStride;
|
|
|
|
weight = subPixelY;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
c[3] += weight * src[3];
|
|
|
|
dest->setARGB ((uint8) (c[PixelARGB::indexA] >> 8),
|
|
(uint8) (c[PixelARGB::indexR] >> 8),
|
|
(uint8) (c[PixelARGB::indexG] >> 8),
|
|
(uint8) (c[PixelARGB::indexB] >> 8));
|
|
}
|
|
|
|
//==============================================================================
|
|
void render4PixelAverage (PixelRGB* dest, const uint8* src, uint32 subPixelX, uint32 subPixelY) noexcept
|
|
{
|
|
uint32 c[3] = { 256 * 128, 256 * 128, 256 * 128 };
|
|
|
|
uint32 weight = (256 - subPixelX) * (256 - subPixelY);
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
|
|
src += this->srcData.pixelStride;
|
|
|
|
weight = subPixelX * (256 - subPixelY);
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
|
|
src += this->srcData.lineStride;
|
|
|
|
weight = subPixelX * subPixelY;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
|
|
src -= this->srcData.pixelStride;
|
|
|
|
weight = (256 - subPixelX) * subPixelY;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
|
|
dest->setARGB ((uint8) 255,
|
|
(uint8) (c[PixelRGB::indexR] >> 16),
|
|
(uint8) (c[PixelRGB::indexG] >> 16),
|
|
(uint8) (c[PixelRGB::indexB] >> 16));
|
|
}
|
|
|
|
void render2PixelAverageX (PixelRGB* dest, const uint8* src, uint32 subPixelX) noexcept
|
|
{
|
|
uint32 c[3] = { 128, 128, 128 };
|
|
|
|
const uint32 weight = 256 - subPixelX;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
|
|
src += this->srcData.pixelStride;
|
|
|
|
c[0] += subPixelX * src[0];
|
|
c[1] += subPixelX * src[1];
|
|
c[2] += subPixelX * src[2];
|
|
|
|
dest->setARGB ((uint8) 255,
|
|
(uint8) (c[PixelRGB::indexR] >> 8),
|
|
(uint8) (c[PixelRGB::indexG] >> 8),
|
|
(uint8) (c[PixelRGB::indexB] >> 8));
|
|
}
|
|
|
|
void render2PixelAverageY (PixelRGB* dest, const uint8* src, uint32 subPixelY) noexcept
|
|
{
|
|
uint32 c[3] = { 128, 128, 128 };
|
|
|
|
const uint32 weight = 256 - subPixelY;
|
|
c[0] += weight * src[0];
|
|
c[1] += weight * src[1];
|
|
c[2] += weight * src[2];
|
|
|
|
src += this->srcData.lineStride;
|
|
|
|
c[0] += subPixelY * src[0];
|
|
c[1] += subPixelY * src[1];
|
|
c[2] += subPixelY * src[2];
|
|
|
|
dest->setARGB ((uint8) 255,
|
|
(uint8) (c[PixelRGB::indexR] >> 8),
|
|
(uint8) (c[PixelRGB::indexG] >> 8),
|
|
(uint8) (c[PixelRGB::indexB] >> 8));
|
|
}
|
|
|
|
//==============================================================================
|
|
void render4PixelAverage (PixelAlpha* dest, const uint8* src, uint32 subPixelX, uint32 subPixelY) noexcept
|
|
{
|
|
uint32 c = 256 * 128;
|
|
c += src[0] * ((256 - subPixelX) * (256 - subPixelY));
|
|
src += this->srcData.pixelStride;
|
|
c += src[0] * (subPixelX * (256 - subPixelY));
|
|
src += this->srcData.lineStride;
|
|
c += src[0] * (subPixelX * subPixelY);
|
|
src -= this->srcData.pixelStride;
|
|
|
|
c += src[0] * ((256 - subPixelX) * subPixelY);
|
|
|
|
*((uint8*) dest) = (uint8) (c >> 16);
|
|
}
|
|
|
|
void render2PixelAverageX (PixelAlpha* dest, const uint8* src, uint32 subPixelX) noexcept
|
|
{
|
|
uint32 c = 128;
|
|
c += src[0] * (256 - subPixelX);
|
|
src += this->srcData.pixelStride;
|
|
c += src[0] * subPixelX;
|
|
*((uint8*) dest) = (uint8) (c >> 8);
|
|
}
|
|
|
|
void render2PixelAverageY (PixelAlpha* dest, const uint8* src, uint32 subPixelY) noexcept
|
|
{
|
|
uint32 c = 128;
|
|
c += src[0] * (256 - subPixelY);
|
|
src += this->srcData.lineStride;
|
|
c += src[0] * subPixelY;
|
|
*((uint8*) dest) = (uint8) (c >> 8);
|
|
}
|
|
|
|
//==============================================================================
|
|
struct TransformedImageSpanInterpolator
|
|
{
|
|
TransformedImageSpanInterpolator (const AffineTransform& transform, float offsetFloat, int offsetInt) noexcept
|
|
: inverseTransform (transform.inverted()),
|
|
pixelOffset (offsetFloat), pixelOffsetInt (offsetInt)
|
|
{}
|
|
|
|
void setStartOfLine (float sx, float sy, int numPixels) noexcept
|
|
{
|
|
jassert (numPixels > 0);
|
|
|
|
sx += pixelOffset;
|
|
sy += pixelOffset;
|
|
auto x1 = sx, y1 = sy;
|
|
sx += (float) numPixels;
|
|
inverseTransform.transformPoints (x1, y1, sx, sy);
|
|
|
|
xBresenham.set ((int) (x1 * 256.0f), (int) (sx * 256.0f), numPixels, pixelOffsetInt);
|
|
yBresenham.set ((int) (y1 * 256.0f), (int) (sy * 256.0f), numPixels, pixelOffsetInt);
|
|
}
|
|
|
|
void next (int& px, int& py) noexcept
|
|
{
|
|
px = xBresenham.n; xBresenham.stepToNext();
|
|
py = yBresenham.n; yBresenham.stepToNext();
|
|
}
|
|
|
|
private:
|
|
struct BresenhamInterpolator
|
|
{
|
|
BresenhamInterpolator() = default;
|
|
|
|
void set (int n1, int n2, int steps, int offsetInt) noexcept
|
|
{
|
|
numSteps = steps;
|
|
step = (n2 - n1) / numSteps;
|
|
remainder = modulo = (n2 - n1) % numSteps;
|
|
n = n1 + offsetInt;
|
|
|
|
if (modulo <= 0)
|
|
{
|
|
modulo += numSteps;
|
|
remainder += numSteps;
|
|
--step;
|
|
}
|
|
|
|
modulo -= numSteps;
|
|
}
|
|
|
|
forcedinline void stepToNext() noexcept
|
|
{
|
|
modulo += remainder;
|
|
n += step;
|
|
|
|
if (modulo > 0)
|
|
{
|
|
modulo -= numSteps;
|
|
++n;
|
|
}
|
|
}
|
|
|
|
int n;
|
|
|
|
private:
|
|
int numSteps, step, modulo, remainder;
|
|
};
|
|
|
|
const AffineTransform inverseTransform;
|
|
BresenhamInterpolator xBresenham, yBresenham;
|
|
const float pixelOffset;
|
|
const int pixelOffsetInt;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (TransformedImageSpanInterpolator)
|
|
};
|
|
|
|
//==============================================================================
|
|
TransformedImageSpanInterpolator interpolator;
|
|
const Image::BitmapData& destData;
|
|
const Image::BitmapData& srcData;
|
|
const int extraAlpha;
|
|
const Graphics::ResamplingQuality quality;
|
|
const int maxX, maxY;
|
|
int currentY;
|
|
DestPixelType* linePixels;
|
|
HeapBlock<SrcPixelType> scratchBuffer;
|
|
size_t scratchSize = 2048;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (TransformedImageFill)
|
|
};
|
|
|
|
|
|
//==============================================================================
|
|
template <class Iterator>
|
|
void renderImageTransformed (Iterator& iter, const Image::BitmapData& destData, const Image::BitmapData& srcData,
|
|
int alpha, const AffineTransform& transform, Graphics::ResamplingQuality quality, bool tiledFill)
|
|
{
|
|
switch (destData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
switch (srcData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
if (tiledFill) { TransformedImageFill<PixelARGB, PixelARGB, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelARGB, PixelARGB, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
case Image::RGB:
|
|
if (tiledFill) { TransformedImageFill<PixelARGB, PixelRGB, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelARGB, PixelRGB, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
if (tiledFill) { TransformedImageFill<PixelARGB, PixelAlpha, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelARGB, PixelAlpha, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case Image::RGB:
|
|
{
|
|
switch (srcData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
if (tiledFill) { TransformedImageFill<PixelRGB, PixelARGB, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelRGB, PixelARGB, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
case Image::RGB:
|
|
if (tiledFill) { TransformedImageFill<PixelRGB, PixelRGB, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelRGB, PixelRGB, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
if (tiledFill) { TransformedImageFill<PixelRGB, PixelAlpha, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelRGB, PixelAlpha, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
switch (srcData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
if (tiledFill) { TransformedImageFill<PixelAlpha, PixelARGB, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelAlpha, PixelARGB, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
case Image::RGB:
|
|
if (tiledFill) { TransformedImageFill<PixelAlpha, PixelRGB, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelAlpha, PixelRGB, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
if (tiledFill) { TransformedImageFill<PixelAlpha, PixelAlpha, true> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
else { TransformedImageFill<PixelAlpha, PixelAlpha, false> r (destData, srcData, transform, alpha, quality); iter.iterate (r); }
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
template <class Iterator>
|
|
void renderImageUntransformed (Iterator& iter, const Image::BitmapData& destData, const Image::BitmapData& srcData, int alpha, int x, int y, bool tiledFill)
|
|
{
|
|
switch (destData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
switch (srcData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
if (tiledFill) { ImageFill<PixelARGB, PixelARGB, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelARGB, PixelARGB, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
case Image::RGB:
|
|
if (tiledFill) { ImageFill<PixelARGB, PixelRGB, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelARGB, PixelRGB, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
if (tiledFill) { ImageFill<PixelARGB, PixelAlpha, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelARGB, PixelAlpha, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case Image::RGB:
|
|
switch (srcData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
if (tiledFill) { ImageFill<PixelRGB, PixelARGB, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelRGB, PixelARGB, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
case Image::RGB:
|
|
if (tiledFill) { ImageFill<PixelRGB, PixelRGB, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelRGB, PixelRGB, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
if (tiledFill) { ImageFill<PixelRGB, PixelAlpha, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelRGB, PixelAlpha, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
switch (srcData.pixelFormat)
|
|
{
|
|
case Image::ARGB:
|
|
if (tiledFill) { ImageFill<PixelAlpha, PixelARGB, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelAlpha, PixelARGB, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
case Image::RGB:
|
|
if (tiledFill) { ImageFill<PixelAlpha, PixelRGB, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelAlpha, PixelRGB, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default:
|
|
if (tiledFill) { ImageFill<PixelAlpha, PixelAlpha, true> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
else { ImageFill<PixelAlpha, PixelAlpha, false> r (destData, srcData, alpha, x, y); iter.iterate (r); }
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
template <class Iterator, class DestPixelType>
|
|
void renderSolidFill (Iterator& iter, const Image::BitmapData& destData, PixelARGB fillColour, bool replaceContents, DestPixelType*)
|
|
{
|
|
if (replaceContents)
|
|
{
|
|
EdgeTableFillers::SolidColour<DestPixelType, true> r (destData, fillColour);
|
|
iter.iterate (r);
|
|
}
|
|
else
|
|
{
|
|
EdgeTableFillers::SolidColour<DestPixelType, false> r (destData, fillColour);
|
|
iter.iterate (r);
|
|
}
|
|
}
|
|
|
|
template <class Iterator, class DestPixelType>
|
|
void renderGradient (Iterator& iter, const Image::BitmapData& destData, const ColourGradient& g, const AffineTransform& transform,
|
|
const PixelARGB* lookupTable, int numLookupEntries, bool isIdentity, DestPixelType*)
|
|
{
|
|
if (g.isRadial)
|
|
{
|
|
if (isIdentity)
|
|
{
|
|
EdgeTableFillers::Gradient<DestPixelType, GradientPixelIterators::Radial> renderer (destData, g, transform, lookupTable, numLookupEntries);
|
|
iter.iterate (renderer);
|
|
}
|
|
else
|
|
{
|
|
EdgeTableFillers::Gradient<DestPixelType, GradientPixelIterators::TransformedRadial> renderer (destData, g, transform, lookupTable, numLookupEntries);
|
|
iter.iterate (renderer);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
EdgeTableFillers::Gradient<DestPixelType, GradientPixelIterators::Linear> renderer (destData, g, transform, lookupTable, numLookupEntries);
|
|
iter.iterate (renderer);
|
|
}
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
namespace ClipRegions
|
|
{
|
|
template <typename SavedStateType>
|
|
struct Base : public SingleThreadedReferenceCountedObject
|
|
{
|
|
Base() = default;
|
|
~Base() override = default;
|
|
|
|
using Ptr = ReferenceCountedObjectPtr<Base>;
|
|
|
|
virtual Ptr clone() const = 0;
|
|
virtual Ptr applyClipTo (const Ptr& target) const = 0;
|
|
|
|
virtual Ptr clipToRectangle (Rectangle<int>) = 0;
|
|
virtual Ptr clipToRectangleList (const RectangleList<int>&) = 0;
|
|
virtual Ptr excludeClipRectangle (Rectangle<int>) = 0;
|
|
virtual Ptr clipToPath (const Path&, const AffineTransform&) = 0;
|
|
virtual Ptr clipToEdgeTable (const EdgeTable&) = 0;
|
|
virtual Ptr clipToImageAlpha (const Image&, const AffineTransform&, Graphics::ResamplingQuality) = 0;
|
|
virtual void translate (Point<int> delta) = 0;
|
|
|
|
virtual bool clipRegionIntersects (Rectangle<int>) const = 0;
|
|
virtual Rectangle<int> getClipBounds() const = 0;
|
|
|
|
virtual void fillRectWithColour (SavedStateType&, Rectangle<int>, PixelARGB colour, bool replaceContents) const = 0;
|
|
virtual void fillRectWithColour (SavedStateType&, Rectangle<float>, PixelARGB colour) const = 0;
|
|
virtual void fillAllWithColour (SavedStateType&, PixelARGB colour, bool replaceContents) const = 0;
|
|
virtual void fillAllWithGradient (SavedStateType&, ColourGradient&, const AffineTransform&, bool isIdentity) const = 0;
|
|
virtual void renderImageTransformed (SavedStateType&, const Image&, int alpha, const AffineTransform&, Graphics::ResamplingQuality, bool tiledFill) const = 0;
|
|
virtual void renderImageUntransformed (SavedStateType&, const Image&, int alpha, int x, int y, bool tiledFill) const = 0;
|
|
};
|
|
|
|
//==============================================================================
|
|
template <typename SavedStateType>
|
|
struct EdgeTableRegion : public Base<SavedStateType>
|
|
{
|
|
EdgeTableRegion (const EdgeTable& e) : edgeTable (e) {}
|
|
EdgeTableRegion (Rectangle<int> r) : edgeTable (r) {}
|
|
EdgeTableRegion (Rectangle<float> r) : edgeTable (r) {}
|
|
EdgeTableRegion (const RectangleList<int>& r) : edgeTable (r) {}
|
|
EdgeTableRegion (const RectangleList<float>& r) : edgeTable (r) {}
|
|
EdgeTableRegion (Rectangle<int> bounds, const Path& p, const AffineTransform& t) : edgeTable (bounds, p, t) {}
|
|
|
|
EdgeTableRegion (const EdgeTableRegion& other) : edgeTable (other.edgeTable) {}
|
|
EdgeTableRegion& operator= (const EdgeTableRegion&) = delete;
|
|
|
|
using Ptr = typename Base<SavedStateType>::Ptr;
|
|
|
|
Ptr clone() const override { return *new EdgeTableRegion (*this); }
|
|
Ptr applyClipTo (const Ptr& target) const override { return target->clipToEdgeTable (edgeTable); }
|
|
|
|
Ptr clipToRectangle (Rectangle<int> r) override
|
|
{
|
|
edgeTable.clipToRectangle (r);
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr clipToRectangleList (const RectangleList<int>& r) override
|
|
{
|
|
RectangleList<int> inverse (edgeTable.getMaximumBounds());
|
|
|
|
if (inverse.subtract (r))
|
|
for (auto& i : inverse)
|
|
edgeTable.excludeRectangle (i);
|
|
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr excludeClipRectangle (Rectangle<int> r) override
|
|
{
|
|
edgeTable.excludeRectangle (r);
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr clipToPath (const Path& p, const AffineTransform& transform) override
|
|
{
|
|
EdgeTable et (edgeTable.getMaximumBounds(), p, transform);
|
|
edgeTable.clipToEdgeTable (et);
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr clipToEdgeTable (const EdgeTable& et) override
|
|
{
|
|
edgeTable.clipToEdgeTable (et);
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr clipToImageAlpha (const Image& image, const AffineTransform& transform, Graphics::ResamplingQuality quality) override
|
|
{
|
|
const Image::BitmapData srcData (image, Image::BitmapData::readOnly);
|
|
|
|
if (transform.isOnlyTranslation())
|
|
{
|
|
// If our translation doesn't involve any distortion, just use a simple blit..
|
|
auto tx = (int) (transform.getTranslationX() * 256.0f);
|
|
auto ty = (int) (transform.getTranslationY() * 256.0f);
|
|
|
|
if (quality == Graphics::lowResamplingQuality || ((tx | ty) & 224) == 0)
|
|
{
|
|
auto imageX = ((tx + 128) >> 8);
|
|
auto imageY = ((ty + 128) >> 8);
|
|
|
|
if (image.getFormat() == Image::ARGB)
|
|
straightClipImage (srcData, imageX, imageY, (PixelARGB*) nullptr);
|
|
else
|
|
straightClipImage (srcData, imageX, imageY, (PixelAlpha*) nullptr);
|
|
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
}
|
|
|
|
if (transform.isSingularity())
|
|
return Ptr();
|
|
|
|
{
|
|
Path p;
|
|
p.addRectangle (0, 0, (float) srcData.width, (float) srcData.height);
|
|
EdgeTable et2 (edgeTable.getMaximumBounds(), p, transform);
|
|
edgeTable.clipToEdgeTable (et2);
|
|
}
|
|
|
|
if (! edgeTable.isEmpty())
|
|
{
|
|
if (image.getFormat() == Image::ARGB)
|
|
transformedClipImage (srcData, transform, quality, (PixelARGB*) nullptr);
|
|
else
|
|
transformedClipImage (srcData, transform, quality, (PixelAlpha*) nullptr);
|
|
}
|
|
|
|
return edgeTable.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
void translate (Point<int> delta) override
|
|
{
|
|
edgeTable.translate ((float) delta.x, delta.y);
|
|
}
|
|
|
|
bool clipRegionIntersects (Rectangle<int> r) const override
|
|
{
|
|
return edgeTable.getMaximumBounds().intersects (r);
|
|
}
|
|
|
|
Rectangle<int> getClipBounds() const override
|
|
{
|
|
return edgeTable.getMaximumBounds();
|
|
}
|
|
|
|
void fillRectWithColour (SavedStateType& state, Rectangle<int> area, PixelARGB colour, bool replaceContents) const override
|
|
{
|
|
fillRectWithColourImpl (state, area, colour, replaceContents);
|
|
}
|
|
|
|
void fillRectWithColour (SavedStateType& state, Rectangle<float> area, PixelARGB colour) const override
|
|
{
|
|
fillRectWithColourImpl (state, area, colour, false);
|
|
}
|
|
|
|
void fillAllWithColour (SavedStateType& state, PixelARGB colour, bool replaceContents) const override
|
|
{
|
|
state.fillWithSolidColour (edgeTable, colour, replaceContents);
|
|
}
|
|
|
|
void fillAllWithGradient (SavedStateType& state, ColourGradient& gradient, const AffineTransform& transform, bool isIdentity) const override
|
|
{
|
|
state.fillWithGradient (edgeTable, gradient, transform, isIdentity);
|
|
}
|
|
|
|
void renderImageTransformed (SavedStateType& state, const Image& src, int alpha, const AffineTransform& transform, Graphics::ResamplingQuality quality, bool tiledFill) const override
|
|
{
|
|
state.renderImageTransformed (edgeTable, src, alpha, transform, quality, tiledFill);
|
|
}
|
|
|
|
void renderImageUntransformed (SavedStateType& state, const Image& src, int alpha, int x, int y, bool tiledFill) const override
|
|
{
|
|
state.renderImageUntransformed (edgeTable, src, alpha, x, y, tiledFill);
|
|
}
|
|
|
|
EdgeTable edgeTable;
|
|
|
|
private:
|
|
template <typename Value>
|
|
void fillRectWithColourImpl (SavedStateType& state, Rectangle<Value> area, PixelARGB colour, bool replace) const
|
|
{
|
|
auto totalClip = edgeTable.getMaximumBounds().template toType<Value>();
|
|
auto clipped = totalClip.getIntersection (area);
|
|
|
|
if (clipped.isEmpty())
|
|
return;
|
|
|
|
EdgeTableRegion et (clipped);
|
|
et.edgeTable.clipToEdgeTable (edgeTable);
|
|
state.fillWithSolidColour (et.edgeTable, colour, replace);
|
|
}
|
|
|
|
template <class SrcPixelType>
|
|
void transformedClipImage (const Image::BitmapData& srcData, const AffineTransform& transform, Graphics::ResamplingQuality quality, const SrcPixelType*)
|
|
{
|
|
EdgeTableFillers::TransformedImageFill<SrcPixelType, SrcPixelType, false> renderer (srcData, srcData, transform, 255, quality);
|
|
|
|
for (int y = 0; y < edgeTable.getMaximumBounds().getHeight(); ++y)
|
|
renderer.clipEdgeTableLine (edgeTable, edgeTable.getMaximumBounds().getX(), y + edgeTable.getMaximumBounds().getY(),
|
|
edgeTable.getMaximumBounds().getWidth());
|
|
}
|
|
|
|
template <class SrcPixelType>
|
|
void straightClipImage (const Image::BitmapData& srcData, int imageX, int imageY, const SrcPixelType*)
|
|
{
|
|
Rectangle<int> r (imageX, imageY, srcData.width, srcData.height);
|
|
edgeTable.clipToRectangle (r);
|
|
|
|
EdgeTableFillers::ImageFill<SrcPixelType, SrcPixelType, false> renderer (srcData, srcData, 255, imageX, imageY);
|
|
|
|
for (int y = 0; y < r.getHeight(); ++y)
|
|
renderer.clipEdgeTableLine (edgeTable, r.getX(), y + r.getY(), r.getWidth());
|
|
}
|
|
};
|
|
|
|
//==============================================================================
|
|
template <typename SavedStateType>
|
|
class RectangleListRegion : public Base<SavedStateType>
|
|
{
|
|
public:
|
|
RectangleListRegion (Rectangle<int> r) : clip (r) {}
|
|
RectangleListRegion (const RectangleList<int>& r) : clip (r) {}
|
|
RectangleListRegion (const RectangleListRegion& other) : clip (other.clip) {}
|
|
|
|
using Ptr = typename Base<SavedStateType>::Ptr;
|
|
|
|
Ptr clone() const override { return *new RectangleListRegion (*this); }
|
|
Ptr applyClipTo (const Ptr& target) const override { return target->clipToRectangleList (clip); }
|
|
|
|
Ptr clipToRectangle (Rectangle<int> r) override
|
|
{
|
|
clip.clipTo (r);
|
|
return clip.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr clipToRectangleList (const RectangleList<int>& r) override
|
|
{
|
|
clip.clipTo (r);
|
|
return clip.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr excludeClipRectangle (Rectangle<int> r) override
|
|
{
|
|
clip.subtract (r);
|
|
return clip.isEmpty() ? Ptr() : Ptr (*this);
|
|
}
|
|
|
|
Ptr clipToPath (const Path& p, const AffineTransform& transform) override { return toEdgeTable()->clipToPath (p, transform); }
|
|
Ptr clipToEdgeTable (const EdgeTable& et) override { return toEdgeTable()->clipToEdgeTable (et); }
|
|
|
|
Ptr clipToImageAlpha (const Image& image, const AffineTransform& transform, Graphics::ResamplingQuality quality) override
|
|
{
|
|
return toEdgeTable()->clipToImageAlpha (image, transform, quality);
|
|
}
|
|
|
|
void translate (Point<int> delta) override { clip.offsetAll (delta); }
|
|
bool clipRegionIntersects (Rectangle<int> r) const override { return clip.intersects (r); }
|
|
Rectangle<int> getClipBounds() const override { return clip.getBounds(); }
|
|
|
|
void fillRectWithColour (SavedStateType& state, Rectangle<int> area, PixelARGB colour, bool replaceContents) const override
|
|
{
|
|
SubRectangleIterator iter (clip, area);
|
|
state.fillWithSolidColour (iter, colour, replaceContents);
|
|
}
|
|
|
|
void fillRectWithColour (SavedStateType& state, Rectangle<float> area, PixelARGB colour) const override
|
|
{
|
|
SubRectangleIteratorFloat iter (clip, area);
|
|
state.fillWithSolidColour (iter, colour, false);
|
|
}
|
|
|
|
void fillAllWithColour (SavedStateType& state, PixelARGB colour, bool replaceContents) const override
|
|
{
|
|
state.fillWithSolidColour (*this, colour, replaceContents);
|
|
}
|
|
|
|
void fillAllWithGradient (SavedStateType& state, ColourGradient& gradient, const AffineTransform& transform, bool isIdentity) const override
|
|
{
|
|
state.fillWithGradient (*this, gradient, transform, isIdentity);
|
|
}
|
|
|
|
void renderImageTransformed (SavedStateType& state, const Image& src, int alpha, const AffineTransform& transform, Graphics::ResamplingQuality quality, bool tiledFill) const override
|
|
{
|
|
state.renderImageTransformed (*this, src, alpha, transform, quality, tiledFill);
|
|
}
|
|
|
|
void renderImageUntransformed (SavedStateType& state, const Image& src, int alpha, int x, int y, bool tiledFill) const override
|
|
{
|
|
state.renderImageUntransformed (*this, src, alpha, x, y, tiledFill);
|
|
}
|
|
|
|
RectangleList<int> clip;
|
|
|
|
//==============================================================================
|
|
template <class Renderer>
|
|
void iterate (Renderer& r) const noexcept
|
|
{
|
|
for (auto& i : clip)
|
|
{
|
|
auto x = i.getX();
|
|
auto w = i.getWidth();
|
|
jassert (w > 0);
|
|
auto bottom = i.getBottom();
|
|
|
|
for (int y = i.getY(); y < bottom; ++y)
|
|
{
|
|
r.setEdgeTableYPos (y);
|
|
r.handleEdgeTableLineFull (x, w);
|
|
}
|
|
}
|
|
}
|
|
|
|
private:
|
|
//==============================================================================
|
|
class SubRectangleIterator
|
|
{
|
|
public:
|
|
SubRectangleIterator (const RectangleList<int>& clipList, Rectangle<int> clipBounds)
|
|
: clip (clipList), area (clipBounds)
|
|
{}
|
|
|
|
template <class Renderer>
|
|
void iterate (Renderer& r) const noexcept
|
|
{
|
|
for (auto& i : clip)
|
|
{
|
|
auto rect = i.getIntersection (area);
|
|
|
|
if (! rect.isEmpty())
|
|
r.handleEdgeTableRectangleFull (rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight());
|
|
}
|
|
}
|
|
|
|
private:
|
|
const RectangleList<int>& clip;
|
|
const Rectangle<int> area;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (SubRectangleIterator)
|
|
};
|
|
|
|
//==============================================================================
|
|
class SubRectangleIteratorFloat
|
|
{
|
|
public:
|
|
SubRectangleIteratorFloat (const RectangleList<int>& clipList, Rectangle<float> clipBounds) noexcept
|
|
: clip (clipList), area (clipBounds)
|
|
{
|
|
}
|
|
|
|
template <class Renderer>
|
|
void iterate (Renderer& r) const noexcept
|
|
{
|
|
const RenderingHelpers::FloatRectangleRasterisingInfo f (area);
|
|
|
|
for (auto& i : clip)
|
|
{
|
|
auto clipLeft = i.getX();
|
|
auto clipRight = i.getRight();
|
|
auto clipTop = i.getY();
|
|
auto clipBottom = i.getBottom();
|
|
|
|
if (f.totalBottom > clipTop && f.totalTop < clipBottom
|
|
&& f.totalRight > clipLeft && f.totalLeft < clipRight)
|
|
{
|
|
if (f.isOnePixelWide())
|
|
{
|
|
if (f.topAlpha != 0 && f.totalTop >= clipTop)
|
|
{
|
|
r.setEdgeTableYPos (f.totalTop);
|
|
r.handleEdgeTablePixel (f.left, f.topAlpha);
|
|
}
|
|
|
|
auto y1 = jmax (clipTop, f.top);
|
|
auto y2 = jmin (f.bottom, clipBottom);
|
|
auto h = y2 - y1;
|
|
|
|
if (h > 0)
|
|
r.handleEdgeTableRectangleFull (f.left, y1, 1, h);
|
|
|
|
if (f.bottomAlpha != 0 && f.bottom < clipBottom)
|
|
{
|
|
r.setEdgeTableYPos (f.bottom);
|
|
r.handleEdgeTablePixel (f.left, f.bottomAlpha);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
auto clippedLeft = jmax (f.left, clipLeft);
|
|
auto clippedWidth = jmin (f.right, clipRight) - clippedLeft;
|
|
bool doLeftAlpha = f.leftAlpha != 0 && f.totalLeft >= clipLeft;
|
|
bool doRightAlpha = f.rightAlpha != 0 && f.right < clipRight;
|
|
|
|
if (f.topAlpha != 0 && f.totalTop >= clipTop)
|
|
{
|
|
r.setEdgeTableYPos (f.totalTop);
|
|
|
|
if (doLeftAlpha) r.handleEdgeTablePixel (f.totalLeft, f.getTopLeftCornerAlpha());
|
|
if (clippedWidth > 0) r.handleEdgeTableLine (clippedLeft, clippedWidth, f.topAlpha);
|
|
if (doRightAlpha) r.handleEdgeTablePixel (f.right, f.getTopRightCornerAlpha());
|
|
}
|
|
|
|
auto y1 = jmax (clipTop, f.top);
|
|
auto y2 = jmin (f.bottom, clipBottom);
|
|
auto h = y2 - y1;
|
|
|
|
if (h > 0)
|
|
{
|
|
if (h == 1)
|
|
{
|
|
r.setEdgeTableYPos (y1);
|
|
|
|
if (doLeftAlpha) r.handleEdgeTablePixel (f.totalLeft, f.leftAlpha);
|
|
if (clippedWidth > 0) r.handleEdgeTableLineFull (clippedLeft, clippedWidth);
|
|
if (doRightAlpha) r.handleEdgeTablePixel (f.right, f.rightAlpha);
|
|
}
|
|
else
|
|
{
|
|
if (doLeftAlpha) r.handleEdgeTableRectangle (f.totalLeft, y1, 1, h, f.leftAlpha);
|
|
if (clippedWidth > 0) r.handleEdgeTableRectangleFull (clippedLeft, y1, clippedWidth, h);
|
|
if (doRightAlpha) r.handleEdgeTableRectangle (f.right, y1, 1, h, f.rightAlpha);
|
|
}
|
|
}
|
|
|
|
if (f.bottomAlpha != 0 && f.bottom < clipBottom)
|
|
{
|
|
r.setEdgeTableYPos (f.bottom);
|
|
|
|
if (doLeftAlpha) r.handleEdgeTablePixel (f.totalLeft, f.getBottomLeftCornerAlpha());
|
|
if (clippedWidth > 0) r.handleEdgeTableLine (clippedLeft, clippedWidth, f.bottomAlpha);
|
|
if (doRightAlpha) r.handleEdgeTablePixel (f.right, f.getBottomRightCornerAlpha());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private:
|
|
const RectangleList<int>& clip;
|
|
Rectangle<float> area;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (SubRectangleIteratorFloat)
|
|
};
|
|
|
|
Ptr toEdgeTable() const { return *new EdgeTableRegion<SavedStateType> (clip); }
|
|
|
|
RectangleListRegion& operator= (const RectangleListRegion&) = delete;
|
|
};
|
|
}
|
|
|
|
//==============================================================================
|
|
template <class SavedStateType>
|
|
class SavedStateBase
|
|
{
|
|
public:
|
|
using BaseRegionType = typename ClipRegions::Base<SavedStateType>;
|
|
using EdgeTableRegionType = typename ClipRegions::EdgeTableRegion<SavedStateType>;
|
|
using RectangleListRegionType = typename ClipRegions::RectangleListRegion<SavedStateType>;
|
|
|
|
SavedStateBase (Rectangle<int> initialClip)
|
|
: clip (new RectangleListRegionType (initialClip)),
|
|
interpolationQuality (Graphics::mediumResamplingQuality), transparencyLayerAlpha (1.0f)
|
|
{
|
|
}
|
|
|
|
SavedStateBase (const RectangleList<int>& clipList, Point<int> origin)
|
|
: clip (new RectangleListRegionType (clipList)), transform (origin),
|
|
interpolationQuality (Graphics::mediumResamplingQuality), transparencyLayerAlpha (1.0f)
|
|
{
|
|
}
|
|
|
|
SavedStateBase (const SavedStateBase& other)
|
|
: clip (other.clip), transform (other.transform), fillType (other.fillType),
|
|
interpolationQuality (other.interpolationQuality),
|
|
transparencyLayerAlpha (other.transparencyLayerAlpha)
|
|
{
|
|
}
|
|
|
|
SavedStateType& getThis() noexcept { return *static_cast<SavedStateType*> (this); }
|
|
|
|
bool clipToRectangle (Rectangle<int> r)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
if (transform.isOnlyTranslated)
|
|
{
|
|
cloneClipIfMultiplyReferenced();
|
|
clip = clip->clipToRectangle (transform.translated (r));
|
|
}
|
|
else if (! transform.isRotated)
|
|
{
|
|
cloneClipIfMultiplyReferenced();
|
|
clip = clip->clipToRectangle (transform.transformed (r));
|
|
}
|
|
else
|
|
{
|
|
Path p;
|
|
p.addRectangle (r);
|
|
clipToPath (p, {});
|
|
}
|
|
}
|
|
|
|
return clip != nullptr;
|
|
}
|
|
|
|
bool clipToRectangleList (const RectangleList<int>& r)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
if (transform.isOnlyTranslated)
|
|
{
|
|
cloneClipIfMultiplyReferenced();
|
|
|
|
if (transform.isIdentity())
|
|
{
|
|
clip = clip->clipToRectangleList (r);
|
|
}
|
|
else
|
|
{
|
|
RectangleList<int> offsetList (r);
|
|
offsetList.offsetAll (transform.offset);
|
|
clip = clip->clipToRectangleList (offsetList);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
clipToPath (r.toPath(), {});
|
|
}
|
|
}
|
|
|
|
return clip != nullptr;
|
|
}
|
|
|
|
bool excludeClipRectangle (Rectangle<int> r)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
cloneClipIfMultiplyReferenced();
|
|
|
|
if (transform.isOnlyTranslated)
|
|
{
|
|
clip = clip->excludeClipRectangle (transform.translated (r.toFloat()).getLargestIntegerWithin());
|
|
}
|
|
else if (! transform.isRotated)
|
|
{
|
|
clip = clip->excludeClipRectangle (transform.boundsAfterTransform (r.toFloat()).getLargestIntegerWithin());
|
|
}
|
|
else
|
|
{
|
|
Path p;
|
|
p.addRectangle (r.toFloat());
|
|
p.applyTransform (transform.complexTransform);
|
|
p.addRectangle (clip->getClipBounds().toFloat());
|
|
p.setUsingNonZeroWinding (false);
|
|
clip = clip->clipToPath (p, {});
|
|
}
|
|
}
|
|
|
|
return clip != nullptr;
|
|
}
|
|
|
|
void clipToPath (const Path& p, const AffineTransform& t)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
cloneClipIfMultiplyReferenced();
|
|
clip = clip->clipToPath (p, transform.getTransformWith (t));
|
|
}
|
|
}
|
|
|
|
void clipToImageAlpha (const Image& sourceImage, const AffineTransform& t)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
if (sourceImage.hasAlphaChannel())
|
|
{
|
|
cloneClipIfMultiplyReferenced();
|
|
clip = clip->clipToImageAlpha (sourceImage, transform.getTransformWith (t), interpolationQuality);
|
|
}
|
|
else
|
|
{
|
|
Path p;
|
|
p.addRectangle (sourceImage.getBounds());
|
|
clipToPath (p, t);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool clipRegionIntersects (Rectangle<int> r) const
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
if (transform.isOnlyTranslated)
|
|
return clip->clipRegionIntersects (transform.translated (r));
|
|
|
|
return getClipBounds().intersects (r);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
Rectangle<int> getClipBounds() const
|
|
{
|
|
return clip != nullptr ? transform.deviceSpaceToUserSpace (clip->getClipBounds()).getSmallestIntegerContainer()
|
|
: Rectangle<int>();
|
|
}
|
|
|
|
void setFillType (const FillType& newFill)
|
|
{
|
|
fillType = newFill;
|
|
}
|
|
|
|
void fillTargetRect (Rectangle<int> r, bool replaceContents)
|
|
{
|
|
if (fillType.isColour())
|
|
{
|
|
clip->fillRectWithColour (getThis(), r, fillType.colour.getPixelARGB(), replaceContents);
|
|
}
|
|
else
|
|
{
|
|
auto clipped = clip->getClipBounds().getIntersection (r);
|
|
|
|
if (! clipped.isEmpty())
|
|
fillShape (*new RectangleListRegionType (clipped), false);
|
|
}
|
|
}
|
|
|
|
void fillTargetRect (Rectangle<float> r)
|
|
{
|
|
if (fillType.isColour())
|
|
{
|
|
clip->fillRectWithColour (getThis(), r, fillType.colour.getPixelARGB());
|
|
}
|
|
else
|
|
{
|
|
auto clipped = clip->getClipBounds().toFloat().getIntersection (r);
|
|
|
|
if (! clipped.isEmpty())
|
|
fillShape (*new EdgeTableRegionType (clipped), false);
|
|
}
|
|
}
|
|
|
|
template <typename CoordType>
|
|
void fillRectAsPath (Rectangle<CoordType> r)
|
|
{
|
|
Path p;
|
|
p.addRectangle (r);
|
|
fillPath (p, {});
|
|
}
|
|
|
|
void fillRect (Rectangle<int> r, bool replaceContents)
|
|
{
|
|
if (r.isEmpty())
|
|
return;
|
|
|
|
if (clip != nullptr)
|
|
{
|
|
if (transform.isOnlyTranslated)
|
|
{
|
|
fillTargetRect (transform.translated (r), replaceContents);
|
|
}
|
|
else if (! transform.isRotated)
|
|
{
|
|
if (replaceContents)
|
|
fillTargetRect (transform.boundsAfterTransform (r.toFloat()).toNearestInt(), true);
|
|
else
|
|
fillTargetRect (transform.boundsAfterTransform (r.toFloat()));
|
|
}
|
|
else
|
|
{
|
|
jassert (! replaceContents); // not implemented
|
|
fillRectAsPath (r);
|
|
}
|
|
}
|
|
}
|
|
|
|
void fillRect (Rectangle<float> r)
|
|
{
|
|
if (r.isEmpty())
|
|
return;
|
|
|
|
if (clip != nullptr)
|
|
{
|
|
if (transform.isOnlyTranslated)
|
|
fillTargetRect (transform.translated (r));
|
|
else if (! transform.isRotated)
|
|
fillTargetRect (transform.boundsAfterTransform (r));
|
|
else
|
|
fillRectAsPath (r);
|
|
}
|
|
}
|
|
|
|
void fillRectList (const RectangleList<float>& list)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
if (list.getNumRectangles() == 1)
|
|
return fillRect (*list.begin());
|
|
|
|
if (transform.isIdentity())
|
|
{
|
|
fillShape (*new EdgeTableRegionType (list), false);
|
|
}
|
|
else if (! transform.isRotated)
|
|
{
|
|
RectangleList<float> transformed (list);
|
|
|
|
if (transform.isOnlyTranslated)
|
|
transformed.offsetAll (transform.offset.toFloat());
|
|
else
|
|
transformed.transformAll (transform.getTransform());
|
|
|
|
fillShape (*new EdgeTableRegionType (transformed), false);
|
|
}
|
|
else
|
|
{
|
|
fillPath (list.toPath(), {});
|
|
}
|
|
}
|
|
}
|
|
|
|
void fillPath (const Path& path, const AffineTransform& t)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
auto trans = transform.getTransformWith (t);
|
|
auto clipRect = clip->getClipBounds();
|
|
|
|
if (path.getBoundsTransformed (trans).getSmallestIntegerContainer().intersects (clipRect))
|
|
fillShape (*new EdgeTableRegionType (clipRect, path, trans), false);
|
|
}
|
|
}
|
|
|
|
void fillEdgeTable (const EdgeTable& edgeTable, float x, int y)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
auto* edgeTableClip = new EdgeTableRegionType (edgeTable);
|
|
edgeTableClip->edgeTable.translate (x, y);
|
|
|
|
fillShape (*edgeTableClip, false);
|
|
}
|
|
}
|
|
|
|
void drawLine (Line<float> line)
|
|
{
|
|
Path p;
|
|
p.addLineSegment (line, 1.0f);
|
|
fillPath (p, {});
|
|
}
|
|
|
|
void drawImage (const Image& sourceImage, const AffineTransform& trans)
|
|
{
|
|
if (clip != nullptr && ! fillType.colour.isTransparent())
|
|
renderImage (sourceImage, trans, {});
|
|
}
|
|
|
|
static bool isOnlyTranslationAllowingError (const AffineTransform& t, float tolerance) noexcept
|
|
{
|
|
return std::abs (t.mat01) < tolerance
|
|
&& std::abs (t.mat10) < tolerance
|
|
&& std::abs (t.mat00 - 1.0f) < tolerance
|
|
&& std::abs (t.mat11 - 1.0f) < tolerance;
|
|
}
|
|
|
|
void renderImage (const Image& sourceImage, const AffineTransform& trans, const BaseRegionType* tiledFillClipRegion)
|
|
{
|
|
auto t = transform.getTransformWith (trans);
|
|
auto alpha = fillType.colour.getAlpha();
|
|
|
|
if (isOnlyTranslationAllowingError (t, 0.002f))
|
|
{
|
|
// If our translation doesn't involve any distortion, just use a simple blit..
|
|
auto tx = (int) (t.getTranslationX() * 256.0f);
|
|
auto ty = (int) (t.getTranslationY() * 256.0f);
|
|
|
|
if (interpolationQuality == Graphics::lowResamplingQuality || ((tx | ty) & 224) == 0)
|
|
{
|
|
tx = ((tx + 128) >> 8);
|
|
ty = ((ty + 128) >> 8);
|
|
|
|
if (tiledFillClipRegion != nullptr)
|
|
{
|
|
tiledFillClipRegion->renderImageUntransformed (getThis(), sourceImage, alpha, tx, ty, true);
|
|
}
|
|
else
|
|
{
|
|
Rectangle<int> area (tx, ty, sourceImage.getWidth(), sourceImage.getHeight());
|
|
area = area.getIntersection (getThis().getMaximumBounds());
|
|
|
|
if (! area.isEmpty())
|
|
if (auto c = clip->applyClipTo (*new EdgeTableRegionType (area)))
|
|
c->renderImageUntransformed (getThis(), sourceImage, alpha, tx, ty, false);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (! t.isSingularity())
|
|
{
|
|
if (tiledFillClipRegion != nullptr)
|
|
{
|
|
tiledFillClipRegion->renderImageTransformed (getThis(), sourceImage, alpha,
|
|
t, interpolationQuality, true);
|
|
}
|
|
else
|
|
{
|
|
Path p;
|
|
p.addRectangle (sourceImage.getBounds());
|
|
|
|
if (auto c = clip->clone()->clipToPath (p, t))
|
|
c->renderImageTransformed (getThis(), sourceImage, alpha,
|
|
t, interpolationQuality, false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void fillShape (typename BaseRegionType::Ptr shapeToFill, bool replaceContents)
|
|
{
|
|
jassert (clip != nullptr);
|
|
shapeToFill = clip->applyClipTo (shapeToFill);
|
|
|
|
if (shapeToFill != nullptr)
|
|
{
|
|
if (fillType.isGradient())
|
|
{
|
|
jassert (! replaceContents); // that option is just for solid colours
|
|
|
|
auto g2 = *(fillType.gradient);
|
|
g2.multiplyOpacity (fillType.getOpacity());
|
|
auto t = transform.getTransformWith (fillType.transform).translated (-0.5f, -0.5f);
|
|
|
|
bool isIdentity = t.isOnlyTranslation();
|
|
|
|
if (isIdentity)
|
|
{
|
|
// If our translation doesn't involve any distortion, we can speed it up..
|
|
g2.point1.applyTransform (t);
|
|
g2.point2.applyTransform (t);
|
|
t = {};
|
|
}
|
|
|
|
shapeToFill->fillAllWithGradient (getThis(), g2, t, isIdentity);
|
|
}
|
|
else if (fillType.isTiledImage())
|
|
{
|
|
renderImage (fillType.image, fillType.transform, shapeToFill.get());
|
|
}
|
|
else
|
|
{
|
|
shapeToFill->fillAllWithColour (getThis(), fillType.colour.getPixelARGB(), replaceContents);
|
|
}
|
|
}
|
|
}
|
|
|
|
void cloneClipIfMultiplyReferenced()
|
|
{
|
|
if (clip->getReferenceCount() > 1)
|
|
clip = clip->clone();
|
|
}
|
|
|
|
typename BaseRegionType::Ptr clip;
|
|
RenderingHelpers::TranslationOrTransform transform;
|
|
FillType fillType;
|
|
Graphics::ResamplingQuality interpolationQuality;
|
|
float transparencyLayerAlpha;
|
|
};
|
|
|
|
//==============================================================================
|
|
class SoftwareRendererSavedState : public SavedStateBase<SoftwareRendererSavedState>
|
|
{
|
|
using BaseClass = SavedStateBase<SoftwareRendererSavedState>;
|
|
|
|
public:
|
|
SoftwareRendererSavedState (const Image& im, Rectangle<int> clipBounds)
|
|
: BaseClass (clipBounds), image (im)
|
|
{
|
|
}
|
|
|
|
SoftwareRendererSavedState (const Image& im, const RectangleList<int>& clipList, Point<int> origin)
|
|
: BaseClass (clipList, origin), image (im)
|
|
{
|
|
}
|
|
|
|
SoftwareRendererSavedState (const SoftwareRendererSavedState& other) = default;
|
|
|
|
std::unique_ptr<SoftwareRendererSavedState> beginTransparencyLayer (float opacity)
|
|
{
|
|
auto s = std::make_unique<SoftwareRendererSavedState> (*this);
|
|
|
|
if (clip != nullptr)
|
|
{
|
|
auto layerBounds = clip->getClipBounds();
|
|
|
|
const auto imageType = image.getPixelData()->createLowLevelContext()
|
|
->getPreferredImageTypeForTemporaryImages();
|
|
|
|
s->image = Image (Image::ARGB,
|
|
layerBounds.getWidth(),
|
|
layerBounds.getHeight(),
|
|
true,
|
|
*imageType);
|
|
|
|
s->transparencyLayerAlpha = opacity;
|
|
s->transform.moveOriginInDeviceSpace (-layerBounds.getPosition());
|
|
s->cloneClipIfMultiplyReferenced();
|
|
s->clip->translate (-layerBounds.getPosition());
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
void endTransparencyLayer (SoftwareRendererSavedState& finishedLayerState)
|
|
{
|
|
if (clip != nullptr)
|
|
{
|
|
auto layerBounds = clip->getClipBounds();
|
|
|
|
auto g = image.createLowLevelContext();
|
|
g->setOpacity (finishedLayerState.transparencyLayerAlpha);
|
|
g->drawImage (finishedLayerState.image, AffineTransform::translation (layerBounds.getPosition()));
|
|
}
|
|
}
|
|
|
|
static void clearGlyphCache()
|
|
{
|
|
GlyphCache::getInstance().reset();
|
|
}
|
|
|
|
//==============================================================================
|
|
Rectangle<int> getMaximumBounds() const { return image.getBounds(); }
|
|
|
|
//==============================================================================
|
|
template <typename IteratorType>
|
|
void renderImageTransformed (IteratorType& iter, const Image& src, int alpha, const AffineTransform& trans, Graphics::ResamplingQuality quality, bool tiledFill) const
|
|
{
|
|
Image::BitmapData destData (image, Image::BitmapData::readWrite);
|
|
const Image::BitmapData srcData (src, Image::BitmapData::readOnly);
|
|
EdgeTableFillers::renderImageTransformed (iter, destData, srcData, alpha, trans, quality, tiledFill);
|
|
}
|
|
|
|
template <typename IteratorType>
|
|
void renderImageUntransformed (IteratorType& iter, const Image& src, int alpha, int x, int y, bool tiledFill) const
|
|
{
|
|
Image::BitmapData destData (image, Image::BitmapData::readWrite);
|
|
const Image::BitmapData srcData (src, Image::BitmapData::readOnly);
|
|
EdgeTableFillers::renderImageUntransformed (iter, destData, srcData, alpha, x, y, tiledFill);
|
|
}
|
|
|
|
template <typename IteratorType>
|
|
void fillWithSolidColour (IteratorType& iter, PixelARGB colour, bool replaceContents) const
|
|
{
|
|
Image::BitmapData destData (image, Image::BitmapData::readWrite);
|
|
|
|
switch (destData.pixelFormat)
|
|
{
|
|
case Image::ARGB: EdgeTableFillers::renderSolidFill (iter, destData, colour, replaceContents, (PixelARGB*) nullptr); break;
|
|
case Image::RGB: EdgeTableFillers::renderSolidFill (iter, destData, colour, replaceContents, (PixelRGB*) nullptr); break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default: EdgeTableFillers::renderSolidFill (iter, destData, colour, replaceContents, (PixelAlpha*) nullptr); break;
|
|
}
|
|
}
|
|
|
|
template <typename IteratorType>
|
|
void fillWithGradient (IteratorType& iter, ColourGradient& gradient, const AffineTransform& trans, bool isIdentity) const
|
|
{
|
|
HeapBlock<PixelARGB> lookupTable;
|
|
auto numLookupEntries = gradient.createLookupTable (trans, lookupTable);
|
|
jassert (numLookupEntries > 0);
|
|
|
|
Image::BitmapData destData (image, Image::BitmapData::readWrite);
|
|
|
|
switch (destData.pixelFormat)
|
|
{
|
|
case Image::ARGB: EdgeTableFillers::renderGradient (iter, destData, gradient, trans, lookupTable, numLookupEntries, isIdentity, (PixelARGB*) nullptr); break;
|
|
case Image::RGB: EdgeTableFillers::renderGradient (iter, destData, gradient, trans, lookupTable, numLookupEntries, isIdentity, (PixelRGB*) nullptr); break;
|
|
case Image::SingleChannel:
|
|
case Image::UnknownFormat:
|
|
default: EdgeTableFillers::renderGradient (iter, destData, gradient, trans, lookupTable, numLookupEntries, isIdentity, (PixelAlpha*) nullptr); break;
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
Image image;
|
|
Font font { FontOptions{} };
|
|
|
|
private:
|
|
SoftwareRendererSavedState& operator= (const SoftwareRendererSavedState&) = delete;
|
|
};
|
|
|
|
//==============================================================================
|
|
template <class StateObjectType>
|
|
class SavedStateStack
|
|
{
|
|
public:
|
|
SavedStateStack (StateObjectType* initialState) noexcept
|
|
: currentState (initialState)
|
|
{}
|
|
|
|
SavedStateStack() = default;
|
|
|
|
void initialise (StateObjectType* state)
|
|
{
|
|
currentState.reset (state);
|
|
}
|
|
|
|
inline StateObjectType* operator->() const noexcept { return currentState.get(); }
|
|
inline StateObjectType& operator*() const noexcept { return *currentState; }
|
|
|
|
void save()
|
|
{
|
|
stack.add (new StateObjectType (*currentState));
|
|
}
|
|
|
|
void restore()
|
|
{
|
|
if (auto* top = stack.getLast())
|
|
{
|
|
currentState.reset (top);
|
|
stack.removeLast (1, false);
|
|
}
|
|
else
|
|
{
|
|
jassertfalse; // trying to pop with an empty stack!
|
|
}
|
|
}
|
|
|
|
void beginTransparencyLayer (float opacity)
|
|
{
|
|
save();
|
|
currentState = currentState->beginTransparencyLayer (opacity);
|
|
}
|
|
|
|
void endTransparencyLayer()
|
|
{
|
|
auto finishedTransparencyLayer = std::move (currentState);
|
|
restore();
|
|
currentState->endTransparencyLayer (*finishedTransparencyLayer);
|
|
}
|
|
|
|
private:
|
|
std::unique_ptr<StateObjectType> currentState;
|
|
OwnedArray<StateObjectType> stack;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SavedStateStack)
|
|
};
|
|
|
|
//==============================================================================
|
|
template <class SavedStateType>
|
|
class StackBasedLowLevelGraphicsContext : public LowLevelGraphicsContext
|
|
{
|
|
public:
|
|
explicit StackBasedLowLevelGraphicsContext (uint64_t frameIn)
|
|
: frame (frameIn)
|
|
{
|
|
}
|
|
|
|
bool isVectorDevice() const override { return false; }
|
|
Rectangle<int> getClipBounds() const override { return stack->getClipBounds(); }
|
|
bool isClipEmpty() const override { return stack->clip == nullptr; }
|
|
|
|
void setOrigin (Point<int> o) override { stack->transform.setOrigin (o); }
|
|
void addTransform (const AffineTransform& t) override { stack->transform.addTransform (t); }
|
|
float getPhysicalPixelScaleFactor() const override { return stack->transform.getPhysicalPixelScaleFactor(); }
|
|
bool clipRegionIntersects (const Rectangle<int>& r) override { return stack->clipRegionIntersects (r); }
|
|
bool clipToRectangle (const Rectangle<int>& r) override { return stack->clipToRectangle (r); }
|
|
bool clipToRectangleList (const RectangleList<int>& r) override { return stack->clipToRectangleList (r); }
|
|
void excludeClipRectangle (const Rectangle<int>& r) override { stack->excludeClipRectangle (r); }
|
|
void clipToPath (const Path& path, const AffineTransform& t) override { stack->clipToPath (path, t); }
|
|
void clipToImageAlpha (const Image& im, const AffineTransform& t) override { stack->clipToImageAlpha (im, t); }
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void saveState() override { stack.save(); }
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void restoreState() override { stack.restore(); }
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void beginTransparencyLayer (float opacity) override { stack.beginTransparencyLayer (opacity); }
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void endTransparencyLayer() override { stack.endTransparencyLayer(); }
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void setFill (const FillType& fillType) override { stack->setFillType (fillType); }
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void setOpacity (float newOpacity) override { stack->fillType.setOpacity (newOpacity); }
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void setInterpolationQuality (Graphics::ResamplingQuality quality) override { stack->interpolationQuality = quality; }
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void fillRect (const Rectangle<int>& r, bool replace) override { stack->fillRect (r, replace); }
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void fillRect (const Rectangle<float>& r) override { stack->fillRect (r); }
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void fillRectList (const RectangleList<float>& list) override { stack->fillRectList (list); }
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void fillPath (const Path& path, const AffineTransform& t) override { stack->fillPath (path, t); }
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void drawImage (const Image& im, const AffineTransform& t) override { stack->drawImage (im, t); }
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void drawLine (const Line<float>& line) override { stack->drawLine (line); }
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void setFont (const Font& newFont) override { stack->font = newFont; }
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const Font& getFont() override { return stack->font; }
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uint64_t getFrameId() const override { return frame; }
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void drawGlyphs (Span<const uint16_t> glyphs,
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Span<const Point<float>> positions,
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const AffineTransform& t) override
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{
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jassert (glyphs.size() == positions.size());
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for (const auto [index, glyph] : enumerate (glyphs))
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drawGlyph (glyph, AffineTransform::translation (positions[(size_t) index]).followedBy (t));
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}
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protected:
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void drawGlyph (uint16_t i, const AffineTransform& t)
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{
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if (stack->clip == nullptr)
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return;
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const auto [layers, drawPosition] = [&]
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{
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if (t.isOnlyTranslation() && ! stack->transform.isRotated)
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{
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auto& cache = RenderingHelpers::GlyphCache::getInstance();
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const Point pos (t.getTranslationX(), t.getTranslationY());
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|
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if (this->stack->transform.isOnlyTranslated)
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{
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const auto drawPos = pos + stack->transform.offset.toFloat();
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return std::tuple (cache.get (stack->font, i), drawPos);
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}
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auto f = stack->font;
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f.setHeight (f.getHeight() * stack->transform.complexTransform.mat11);
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auto xScale = stack->transform.complexTransform.mat00 / stack->transform.complexTransform.mat11;
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if (std::abs (xScale - 1.0f) > 0.01f)
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f.setHorizontalScale (xScale);
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const auto drawPos = stack->transform.transformed (pos);
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return std::tuple (cache.get (f, i), drawPos);
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}
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|
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const auto fontHeight = detail::FontRendering::getEffectiveHeight (stack->font);
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const auto fontTransform = AffineTransform::scale (fontHeight * stack->font.getHorizontalScale(),
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|
fontHeight).followedBy (t);
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const auto fullTransform = stack->transform.getTransformWith (fontTransform);
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return std::tuple (stack->font.getTypefacePtr()->getLayersForGlyph (stack->font.getMetricsKind(), i, fullTransform), Point<float>{});
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|
}();
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|
|
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const auto initialFill = stack->fillType;
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|
const ScopeGuard scope { [&] { this->stack->setFillType (initialFill); } };
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|
|
|
for (const auto& layer : layers)
|
|
{
|
|
if (auto* colourLayer = std::get_if<ColourLayer> (&layer.layer))
|
|
{
|
|
if (auto fill = colourLayer->colour)
|
|
stack->setFillType (*fill);
|
|
|
|
stack->fillEdgeTable (colourLayer->clip, drawPosition.x, roundToInt (drawPosition.y));
|
|
}
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else if (auto* imageLayer = std::get_if<ImageLayer> (&layer.layer))
|
|
{
|
|
// The position arguments to fillEdgeTable are in physical screen-space,
|
|
// and do not take the current context transform into account.
|
|
// However, drawImage *does* apply the context transform internally.
|
|
// We apply the inverse context transform here so that after the
|
|
// real context transform is applied, the image will be painted at the
|
|
// physical position specified by drawPosition.
|
|
const auto imageTransform = imageLayer->transform.translated (drawPosition)
|
|
.followedBy (stack->transform.getTransform().inverted());
|
|
stack->drawImage (imageLayer->image, imageTransform);
|
|
}
|
|
}
|
|
}
|
|
|
|
explicit StackBasedLowLevelGraphicsContext (SavedStateType* initialState) : stack (initialState) {}
|
|
StackBasedLowLevelGraphicsContext() = default;
|
|
|
|
RenderingHelpers::SavedStateStack<SavedStateType> stack;
|
|
uint64_t frame = 0;
|
|
};
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|
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|
JUCE_END_IGNORE_WARNINGS_MSVC
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|
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} // namespace juce::RenderingHelpers
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