25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
706 lines
22 KiB
C++
706 lines
22 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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namespace
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{
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template <typename Type>
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Rectangle<Type> coordsToRectangle (Type x, Type y, Type w, Type h) noexcept
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{
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#if JUCE_DEBUG
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const int maxVal = 0x3fffffff;
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jassert ((int) x >= -maxVal && (int) x <= maxVal
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&& (int) y >= -maxVal && (int) y <= maxVal
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&& (int) w >= 0 && (int) w <= maxVal
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&& (int) h >= 0 && (int) h <= maxVal);
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#endif
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return { x, y, w, h };
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}
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}
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//==============================================================================
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LowLevelGraphicsContext::LowLevelGraphicsContext() {}
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LowLevelGraphicsContext::~LowLevelGraphicsContext() {}
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//==============================================================================
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Graphics::Graphics (const Image& imageToDrawOnto)
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: contextHolder (imageToDrawOnto.createLowLevelContext()),
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context (*contextHolder)
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{
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jassert (imageToDrawOnto.isValid()); // Can't draw into a null image!
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}
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Graphics::Graphics (LowLevelGraphicsContext& internalContext) noexcept
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: context (internalContext)
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{
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}
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Graphics::~Graphics()
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{
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}
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//==============================================================================
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void Graphics::resetToDefaultState()
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{
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saveStateIfPending();
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context.setFill (FillType());
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context.setFont (Font());
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context.setInterpolationQuality (Graphics::mediumResamplingQuality);
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}
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bool Graphics::isVectorDevice() const
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{
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return context.isVectorDevice();
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}
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bool Graphics::reduceClipRegion (Rectangle<int> area)
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{
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saveStateIfPending();
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return context.clipToRectangle (area);
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}
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bool Graphics::reduceClipRegion (int x, int y, int w, int h)
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{
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return reduceClipRegion (coordsToRectangle (x, y, w, h));
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}
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bool Graphics::reduceClipRegion (const RectangleList<int>& clipRegion)
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{
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saveStateIfPending();
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return context.clipToRectangleList (clipRegion);
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}
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bool Graphics::reduceClipRegion (const Path& path, const AffineTransform& transform)
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{
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saveStateIfPending();
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context.clipToPath (path, transform);
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return ! context.isClipEmpty();
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}
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bool Graphics::reduceClipRegion (const Image& image, const AffineTransform& transform)
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{
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saveStateIfPending();
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context.clipToImageAlpha (image, transform);
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return ! context.isClipEmpty();
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}
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void Graphics::excludeClipRegion (Rectangle<int> rectangleToExclude)
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{
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saveStateIfPending();
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context.excludeClipRectangle (rectangleToExclude);
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}
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bool Graphics::isClipEmpty() const
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{
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return context.isClipEmpty();
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}
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Rectangle<int> Graphics::getClipBounds() const
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{
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return context.getClipBounds();
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}
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void Graphics::saveState()
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{
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saveStateIfPending();
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saveStatePending = true;
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}
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void Graphics::restoreState()
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{
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if (saveStatePending)
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saveStatePending = false;
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else
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context.restoreState();
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}
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void Graphics::saveStateIfPending()
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{
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if (saveStatePending)
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{
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saveStatePending = false;
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context.saveState();
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}
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}
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void Graphics::setOrigin (Point<int> newOrigin)
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{
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saveStateIfPending();
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context.setOrigin (newOrigin);
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}
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void Graphics::setOrigin (int x, int y)
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{
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setOrigin ({ x, y });
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}
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void Graphics::addTransform (const AffineTransform& transform)
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{
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saveStateIfPending();
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context.addTransform (transform);
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}
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bool Graphics::clipRegionIntersects (Rectangle<int> area) const
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{
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return context.clipRegionIntersects (area);
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}
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void Graphics::beginTransparencyLayer (float layerOpacity)
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{
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saveStateIfPending();
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context.beginTransparencyLayer (layerOpacity);
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}
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void Graphics::endTransparencyLayer()
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{
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context.endTransparencyLayer();
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}
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//==============================================================================
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void Graphics::setColour (Colour newColour)
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{
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saveStateIfPending();
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context.setFill (newColour);
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}
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void Graphics::setOpacity (float newOpacity)
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{
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saveStateIfPending();
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context.setOpacity (newOpacity);
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}
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void Graphics::setGradientFill (const ColourGradient& gradient)
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{
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setFillType (gradient);
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}
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void Graphics::setGradientFill (ColourGradient&& gradient)
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{
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setFillType (std::move (gradient));
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}
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void Graphics::setTiledImageFill (const Image& imageToUse, const int anchorX, const int anchorY, const float opacity)
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{
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saveStateIfPending();
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context.setFill (FillType (imageToUse, AffineTransform::translation ((float) anchorX, (float) anchorY)));
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context.setOpacity (opacity);
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}
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void Graphics::setFillType (const FillType& newFill)
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{
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saveStateIfPending();
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context.setFill (newFill);
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}
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//==============================================================================
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void Graphics::setFont (const Font& newFont)
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{
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saveStateIfPending();
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context.setFont (newFont);
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}
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void Graphics::setFont (const float newFontHeight)
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{
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setFont (context.getFont().withHeight (newFontHeight));
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}
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Font Graphics::getCurrentFont() const
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{
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return context.getFont();
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}
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//==============================================================================
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void Graphics::drawSingleLineText (const String& text, const int startX, const int baselineY,
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Justification justification) const
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{
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if (text.isNotEmpty())
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{
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// Don't pass any vertical placement flags to this method - they'll be ignored.
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jassert (justification.getOnlyVerticalFlags() == 0);
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auto flags = justification.getOnlyHorizontalFlags();
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if (flags == Justification::right && startX < context.getClipBounds().getX())
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return;
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if (flags == Justification::left && startX > context.getClipBounds().getRight())
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return;
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GlyphArrangement arr;
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arr.addLineOfText (context.getFont(), text, (float) startX, (float) baselineY);
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if (flags != Justification::left)
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{
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auto w = arr.getBoundingBox (0, -1, true).getWidth();
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if ((flags & (Justification::horizontallyCentred | Justification::horizontallyJustified)) != 0)
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w /= 2.0f;
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arr.draw (*this, AffineTransform::translation (-w, 0));
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}
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else
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{
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arr.draw (*this);
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}
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}
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}
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void Graphics::drawMultiLineText (const String& text, const int startX,
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const int baselineY, const int maximumLineWidth,
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Justification justification, const float leading) const
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{
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if (text.isNotEmpty()
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&& startX < context.getClipBounds().getRight())
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{
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GlyphArrangement arr;
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arr.addJustifiedText (context.getFont(), text,
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(float) startX, (float) baselineY, (float) maximumLineWidth,
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justification, leading);
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arr.draw (*this);
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}
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}
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void Graphics::drawText (const String& text, Rectangle<float> area,
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Justification justificationType, bool useEllipsesIfTooBig) const
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{
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if (text.isNotEmpty() && context.clipRegionIntersects (area.getSmallestIntegerContainer()))
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{
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GlyphArrangement arr;
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arr.addCurtailedLineOfText (context.getFont(), text, 0.0f, 0.0f,
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area.getWidth(), useEllipsesIfTooBig);
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arr.justifyGlyphs (0, arr.getNumGlyphs(),
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area.getX(), area.getY(), area.getWidth(), area.getHeight(),
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justificationType);
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arr.draw (*this);
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}
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}
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void Graphics::drawText (const String& text, Rectangle<int> area,
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Justification justificationType, bool useEllipsesIfTooBig) const
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{
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drawText (text, area.toFloat(), justificationType, useEllipsesIfTooBig);
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}
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void Graphics::drawText (const String& text, int x, int y, int width, int height,
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Justification justificationType, const bool useEllipsesIfTooBig) const
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{
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drawText (text, coordsToRectangle (x, y, width, height), justificationType, useEllipsesIfTooBig);
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}
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void Graphics::drawFittedText (const String& text, Rectangle<int> area,
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Justification justification,
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const int maximumNumberOfLines,
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const float minimumHorizontalScale) const
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{
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if (text.isNotEmpty() && (! area.isEmpty()) && context.clipRegionIntersects (area))
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{
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GlyphArrangement arr;
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arr.addFittedText (context.getFont(), text,
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(float) area.getX(), (float) area.getY(),
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(float) area.getWidth(), (float) area.getHeight(),
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justification,
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maximumNumberOfLines,
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minimumHorizontalScale);
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arr.draw (*this);
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}
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}
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void Graphics::drawFittedText (const String& text, int x, int y, int width, int height,
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Justification justification,
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const int maximumNumberOfLines,
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const float minimumHorizontalScale) const
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{
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drawFittedText (text, coordsToRectangle (x, y, width, height),
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justification, maximumNumberOfLines, minimumHorizontalScale);
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}
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//==============================================================================
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void Graphics::fillRect (Rectangle<int> r) const
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{
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context.fillRect (r, false);
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}
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void Graphics::fillRect (Rectangle<float> r) const
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{
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context.fillRect (r);
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}
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void Graphics::fillRect (int x, int y, int width, int height) const
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{
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context.fillRect (coordsToRectangle (x, y, width, height), false);
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}
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void Graphics::fillRect (float x, float y, float width, float height) const
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{
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fillRect (coordsToRectangle (x, y, width, height));
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}
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void Graphics::fillRectList (const RectangleList<float>& rectangles) const
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{
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context.fillRectList (rectangles);
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}
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void Graphics::fillRectList (const RectangleList<int>& rects) const
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{
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for (auto& r : rects)
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context.fillRect (r, false);
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}
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void Graphics::fillAll() const
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{
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fillRect (context.getClipBounds());
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}
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void Graphics::fillAll (Colour colourToUse) const
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{
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if (! colourToUse.isTransparent())
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{
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auto clip = context.getClipBounds();
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context.saveState();
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context.setFill (colourToUse);
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context.fillRect (clip, false);
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context.restoreState();
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}
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}
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//==============================================================================
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void Graphics::fillPath (const Path& path) const
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{
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if (! (context.isClipEmpty() || path.isEmpty()))
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context.fillPath (path, AffineTransform());
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}
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void Graphics::fillPath (const Path& path, const AffineTransform& transform) const
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{
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if (! (context.isClipEmpty() || path.isEmpty()))
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context.fillPath (path, transform);
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}
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void Graphics::strokePath (const Path& path,
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const PathStrokeType& strokeType,
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const AffineTransform& transform) const
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{
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Path stroke;
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strokeType.createStrokedPath (stroke, path, transform, context.getPhysicalPixelScaleFactor());
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fillPath (stroke);
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}
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//==============================================================================
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void Graphics::drawRect (float x, float y, float width, float height, float lineThickness) const
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{
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drawRect (coordsToRectangle (x, y, width, height), lineThickness);
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}
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void Graphics::drawRect (int x, int y, int width, int height, int lineThickness) const
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{
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drawRect (coordsToRectangle (x, y, width, height), lineThickness);
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}
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void Graphics::drawRect (Rectangle<int> r, int lineThickness) const
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{
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drawRect (r.toFloat(), (float) lineThickness);
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}
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void Graphics::drawRect (Rectangle<float> r, const float lineThickness) const
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{
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jassert (r.getWidth() >= 0.0f && r.getHeight() >= 0.0f);
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RectangleList<float> rects;
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rects.addWithoutMerging (r.removeFromTop (lineThickness));
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rects.addWithoutMerging (r.removeFromBottom (lineThickness));
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rects.addWithoutMerging (r.removeFromLeft (lineThickness));
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rects.addWithoutMerging (r.removeFromRight (lineThickness));
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context.fillRectList (rects);
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}
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//==============================================================================
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void Graphics::fillEllipse (Rectangle<float> area) const
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{
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Path p;
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p.addEllipse (area);
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fillPath (p);
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}
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void Graphics::fillEllipse (float x, float y, float w, float h) const
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{
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fillEllipse (coordsToRectangle (x, y, w, h));
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}
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void Graphics::drawEllipse (float x, float y, float width, float height, float lineThickness) const
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{
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drawEllipse (coordsToRectangle (x, y, width, height), lineThickness);
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}
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void Graphics::drawEllipse (Rectangle<float> area, float lineThickness) const
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{
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Path p;
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if (area.getWidth() == area.getHeight())
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{
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// For a circle, we can avoid having to generate a stroke
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p.addEllipse (area.expanded (lineThickness * 0.5f));
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p.addEllipse (area.reduced (lineThickness * 0.5f));
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p.setUsingNonZeroWinding (false);
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fillPath (p);
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}
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else
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{
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p.addEllipse (area);
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strokePath (p, PathStrokeType (lineThickness));
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}
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}
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void Graphics::fillRoundedRectangle (float x, float y, float width, float height, float cornerSize) const
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{
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fillRoundedRectangle (coordsToRectangle (x, y, width, height), cornerSize);
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}
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void Graphics::fillRoundedRectangle (Rectangle<float> r, const float cornerSize) const
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{
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Path p;
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p.addRoundedRectangle (r, cornerSize);
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fillPath (p);
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}
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void Graphics::drawRoundedRectangle (float x, float y, float width, float height,
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float cornerSize, float lineThickness) const
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{
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drawRoundedRectangle (coordsToRectangle (x, y, width, height), cornerSize, lineThickness);
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}
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void Graphics::drawRoundedRectangle (Rectangle<float> r, float cornerSize, float lineThickness) const
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{
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Path p;
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p.addRoundedRectangle (r, cornerSize);
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strokePath (p, PathStrokeType (lineThickness));
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}
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void Graphics::drawArrow (Line<float> line, float lineThickness, float arrowheadWidth, float arrowheadLength) const
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{
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Path p;
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p.addArrow (line, lineThickness, arrowheadWidth, arrowheadLength);
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fillPath (p);
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}
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void Graphics::fillCheckerBoard (Rectangle<float> area, float checkWidth, float checkHeight,
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Colour colour1, Colour colour2) const
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{
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jassert (checkWidth > 0 && checkHeight > 0); // can't be zero or less!
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if (checkWidth > 0 && checkHeight > 0)
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{
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context.saveState();
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if (colour1 == colour2)
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{
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context.setFill (colour1);
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context.fillRect (area);
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}
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else
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{
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auto clipped = context.getClipBounds().getIntersection (area.getSmallestIntegerContainer());
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if (! clipped.isEmpty())
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{
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const int checkNumX = (int) (((float) clipped.getX() - area.getX()) / checkWidth);
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const int checkNumY = (int) (((float) clipped.getY() - area.getY()) / checkHeight);
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const float startX = area.getX() + (float) checkNumX * checkWidth;
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const float startY = area.getY() + (float) checkNumY * checkHeight;
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const float right = (float) clipped.getRight();
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const float bottom = (float) clipped.getBottom();
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for (int i = 0; i < 2; ++i)
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{
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int cy = i;
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RectangleList<float> checks;
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for (float y = startY; y < bottom; y += checkHeight)
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for (float x = startX + (cy++ & 1) * checkWidth; x < right; x += checkWidth * 2.0f)
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checks.addWithoutMerging ({ x, y, checkWidth, checkHeight });
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checks.clipTo (area);
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context.setFill (i == ((checkNumX ^ checkNumY) & 1) ? colour1 : colour2);
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context.fillRectList (checks);
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}
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}
|
|
}
|
|
|
|
context.restoreState();
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Graphics::drawVerticalLine (const int x, float top, float bottom) const
|
|
{
|
|
if (top < bottom)
|
|
context.fillRect (Rectangle<float> ((float) x, top, 1.0f, bottom - top));
|
|
}
|
|
|
|
void Graphics::drawHorizontalLine (const int y, float left, float right) const
|
|
{
|
|
if (left < right)
|
|
context.fillRect (Rectangle<float> (left, (float) y, right - left, 1.0f));
|
|
}
|
|
|
|
void Graphics::drawLine (Line<float> line) const
|
|
{
|
|
context.drawLine (line);
|
|
}
|
|
|
|
void Graphics::drawLine (float x1, float y1, float x2, float y2) const
|
|
{
|
|
context.drawLine (Line<float> (x1, y1, x2, y2));
|
|
}
|
|
|
|
void Graphics::drawLine (float x1, float y1, float x2, float y2, float lineThickness) const
|
|
{
|
|
drawLine (Line<float> (x1, y1, x2, y2), lineThickness);
|
|
}
|
|
|
|
void Graphics::drawLine (Line<float> line, const float lineThickness) const
|
|
{
|
|
Path p;
|
|
p.addLineSegment (line, lineThickness);
|
|
fillPath (p);
|
|
}
|
|
|
|
void Graphics::drawDashedLine (Line<float> line, const float* dashLengths,
|
|
int numDashLengths, float lineThickness, int n) const
|
|
{
|
|
jassert (n >= 0 && n < numDashLengths); // your start index must be valid!
|
|
|
|
const Point<double> delta ((line.getEnd() - line.getStart()).toDouble());
|
|
const double totalLen = delta.getDistanceFromOrigin();
|
|
|
|
if (totalLen >= 0.1)
|
|
{
|
|
const double onePixAlpha = 1.0 / totalLen;
|
|
|
|
for (double alpha = 0.0; alpha < 1.0;)
|
|
{
|
|
jassert (dashLengths[n] > 0); // can't have zero-length dashes!
|
|
|
|
const double lastAlpha = alpha;
|
|
alpha += dashLengths [n] * onePixAlpha;
|
|
n = (n + 1) % numDashLengths;
|
|
|
|
if ((n & 1) != 0)
|
|
{
|
|
const Line<float> segment (line.getStart() + (delta * lastAlpha).toFloat(),
|
|
line.getStart() + (delta * jmin (1.0, alpha)).toFloat());
|
|
|
|
if (lineThickness != 1.0f)
|
|
drawLine (segment, lineThickness);
|
|
else
|
|
context.drawLine (segment);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
void Graphics::setImageResamplingQuality (const Graphics::ResamplingQuality newQuality)
|
|
{
|
|
saveStateIfPending();
|
|
context.setInterpolationQuality (newQuality);
|
|
}
|
|
|
|
//==============================================================================
|
|
void Graphics::drawImageAt (const Image& imageToDraw, int x, int y, bool fillAlphaChannel) const
|
|
{
|
|
drawImageTransformed (imageToDraw,
|
|
AffineTransform::translation ((float) x, (float) y),
|
|
fillAlphaChannel);
|
|
}
|
|
|
|
void Graphics::drawImage (const Image& imageToDraw, Rectangle<float> targetArea,
|
|
RectanglePlacement placementWithinTarget, bool fillAlphaChannelWithCurrentBrush) const
|
|
{
|
|
if (imageToDraw.isValid())
|
|
drawImageTransformed (imageToDraw,
|
|
placementWithinTarget.getTransformToFit (imageToDraw.getBounds().toFloat(), targetArea),
|
|
fillAlphaChannelWithCurrentBrush);
|
|
}
|
|
|
|
void Graphics::drawImageWithin (const Image& imageToDraw, int dx, int dy, int dw, int dh,
|
|
RectanglePlacement placementWithinTarget, bool fillAlphaChannelWithCurrentBrush) const
|
|
{
|
|
drawImage (imageToDraw, coordsToRectangle (dx, dy, dw, dh).toFloat(),
|
|
placementWithinTarget, fillAlphaChannelWithCurrentBrush);
|
|
}
|
|
|
|
void Graphics::drawImage (const Image& imageToDraw,
|
|
int dx, int dy, int dw, int dh,
|
|
int sx, int sy, int sw, int sh,
|
|
const bool fillAlphaChannelWithCurrentBrush) const
|
|
{
|
|
if (imageToDraw.isValid() && context.clipRegionIntersects (coordsToRectangle (dx, dy, dw, dh)))
|
|
drawImageTransformed (imageToDraw.getClippedImage (coordsToRectangle (sx, sy, sw, sh)),
|
|
AffineTransform::scale ((float) dw / (float) sw, (float) dh / (float) sh)
|
|
.translated ((float) dx, (float) dy),
|
|
fillAlphaChannelWithCurrentBrush);
|
|
}
|
|
|
|
void Graphics::drawImageTransformed (const Image& imageToDraw,
|
|
const AffineTransform& transform,
|
|
const bool fillAlphaChannelWithCurrentBrush) const
|
|
{
|
|
if (imageToDraw.isValid() && ! context.isClipEmpty())
|
|
{
|
|
if (fillAlphaChannelWithCurrentBrush)
|
|
{
|
|
context.saveState();
|
|
context.clipToImageAlpha (imageToDraw, transform);
|
|
fillAll();
|
|
context.restoreState();
|
|
}
|
|
else
|
|
{
|
|
context.drawImage (imageToDraw, transform);
|
|
}
|
|
}
|
|
}
|
|
|
|
//==============================================================================
|
|
Graphics::ScopedSaveState::ScopedSaveState (Graphics& g) : context (g)
|
|
{
|
|
context.saveState();
|
|
}
|
|
|
|
Graphics::ScopedSaveState::~ScopedSaveState()
|
|
{
|
|
context.restoreState();
|
|
}
|
|
|
|
} // namespace juce
|