540 lines
16 KiB
C++
540 lines
16 KiB
C++
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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// this will throw an assertion if you try to draw something that's not
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// possible in postscript
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#define WARN_ABOUT_NON_POSTSCRIPT_OPERATIONS 0
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//==============================================================================
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#if JUCE_DEBUG && WARN_ABOUT_NON_POSTSCRIPT_OPERATIONS
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#define notPossibleInPostscriptAssert jassertfalse
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#else
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#define notPossibleInPostscriptAssert
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#endif
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//==============================================================================
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LowLevelGraphicsPostScriptRenderer::LowLevelGraphicsPostScriptRenderer (OutputStream& resultingPostScript,
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const String& documentTitle,
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const int totalWidth_,
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const int totalHeight_)
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: out (resultingPostScript),
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totalWidth (totalWidth_),
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totalHeight (totalHeight_),
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needToClip (true)
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{
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stateStack.add (new SavedState());
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stateStack.getLast()->clip = Rectangle<int> (totalWidth_, totalHeight_);
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const float scale = jmin ((520.0f / (float) totalWidth_), (750.0f / (float) totalHeight));
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out << "%!PS-Adobe-3.0 EPSF-3.0"
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"\n%%BoundingBox: 0 0 600 824"
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"\n%%Pages: 0"
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"\n%%Creator: Raw Material Software Limited - JUCE"
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"\n%%Title: " << documentTitle <<
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"\n%%CreationDate: none"
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"\n%%LanguageLevel: 2"
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"\n%%EndComments"
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"\n%%BeginProlog"
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"\n%%BeginResource: JRes"
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"\n/bd {bind def} bind def"
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"\n/c {setrgbcolor} bd"
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"\n/m {moveto} bd"
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"\n/l {lineto} bd"
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"\n/rl {rlineto} bd"
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"\n/ct {curveto} bd"
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"\n/cp {closepath} bd"
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"\n/pr {3 index 3 index moveto 1 index 0 rlineto 0 1 index rlineto pop neg 0 rlineto pop pop closepath} bd"
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"\n/doclip {initclip newpath} bd"
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"\n/endclip {clip newpath} bd"
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"\n%%EndResource"
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"\n%%EndProlog"
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"\n%%BeginSetup"
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"\n%%EndSetup"
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"\n%%Page: 1 1"
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"\n%%BeginPageSetup"
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"\n%%EndPageSetup\n\n"
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<< "40 800 translate\n"
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<< scale << ' ' << scale << " scale\n\n";
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}
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LowLevelGraphicsPostScriptRenderer::~LowLevelGraphicsPostScriptRenderer()
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{
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}
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//==============================================================================
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bool LowLevelGraphicsPostScriptRenderer::isVectorDevice() const
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{
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return true;
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}
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void LowLevelGraphicsPostScriptRenderer::setOrigin (Point<int> o)
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{
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if (! o.isOrigin())
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{
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stateStack.getLast()->xOffset += o.x;
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stateStack.getLast()->yOffset += o.y;
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needToClip = true;
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}
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}
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void LowLevelGraphicsPostScriptRenderer::addTransform (const AffineTransform& /*transform*/)
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{
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//xxx
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jassertfalse;
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}
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float LowLevelGraphicsPostScriptRenderer::getPhysicalPixelScaleFactor() { return 1.0f; }
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bool LowLevelGraphicsPostScriptRenderer::clipToRectangle (const Rectangle<int>& r)
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{
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needToClip = true;
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return stateStack.getLast()->clip.clipTo (r.translated (stateStack.getLast()->xOffset, stateStack.getLast()->yOffset));
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}
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bool LowLevelGraphicsPostScriptRenderer::clipToRectangleList (const RectangleList<int>& clipRegion)
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{
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needToClip = true;
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return stateStack.getLast()->clip.clipTo (clipRegion);
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}
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void LowLevelGraphicsPostScriptRenderer::excludeClipRectangle (const Rectangle<int>& r)
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{
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needToClip = true;
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stateStack.getLast()->clip.subtract (r.translated (stateStack.getLast()->xOffset, stateStack.getLast()->yOffset));
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}
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void LowLevelGraphicsPostScriptRenderer::clipToPath (const Path& path, const AffineTransform& transform)
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{
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writeClip();
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Path p (path);
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p.applyTransform (transform.translated ((float) stateStack.getLast()->xOffset, (float) stateStack.getLast()->yOffset));
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writePath (p);
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out << "clip\n";
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}
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void LowLevelGraphicsPostScriptRenderer::clipToImageAlpha (const Image& /*sourceImage*/, const AffineTransform& /*transform*/)
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{
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needToClip = true;
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jassertfalse; // xxx
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}
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bool LowLevelGraphicsPostScriptRenderer::clipRegionIntersects (const Rectangle<int>& r)
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{
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return stateStack.getLast()->clip.intersectsRectangle (r.translated (stateStack.getLast()->xOffset, stateStack.getLast()->yOffset));
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}
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Rectangle<int> LowLevelGraphicsPostScriptRenderer::getClipBounds() const
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{
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return stateStack.getLast()->clip.getBounds().translated (-stateStack.getLast()->xOffset,
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-stateStack.getLast()->yOffset);
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}
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bool LowLevelGraphicsPostScriptRenderer::isClipEmpty() const
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{
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return stateStack.getLast()->clip.isEmpty();
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}
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//==============================================================================
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LowLevelGraphicsPostScriptRenderer::SavedState::SavedState()
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: xOffset (0),
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yOffset (0)
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{
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}
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LowLevelGraphicsPostScriptRenderer::SavedState::~SavedState()
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{
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}
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void LowLevelGraphicsPostScriptRenderer::saveState()
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{
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stateStack.add (new SavedState (*stateStack.getLast()));
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}
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void LowLevelGraphicsPostScriptRenderer::restoreState()
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{
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jassert (stateStack.size() > 0);
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if (stateStack.size() > 0)
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stateStack.removeLast();
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}
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void LowLevelGraphicsPostScriptRenderer::beginTransparencyLayer (float)
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{
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}
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void LowLevelGraphicsPostScriptRenderer::endTransparencyLayer()
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{
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}
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//==============================================================================
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void LowLevelGraphicsPostScriptRenderer::writeClip()
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{
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if (needToClip)
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{
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needToClip = false;
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out << "doclip ";
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int itemsOnLine = 0;
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for (auto& i : stateStack.getLast()->clip)
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{
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if (++itemsOnLine == 6)
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{
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itemsOnLine = 0;
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out << '\n';
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}
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out << i.getX() << ' ' << -i.getY() << ' '
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<< i.getWidth() << ' ' << -i.getHeight() << " pr ";
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}
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out << "endclip\n";
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}
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}
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void LowLevelGraphicsPostScriptRenderer::writeColour (Colour colour)
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{
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Colour c (Colours::white.overlaidWith (colour));
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if (lastColour != c)
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{
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lastColour = c;
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out << String (c.getFloatRed(), 3) << ' '
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<< String (c.getFloatGreen(), 3) << ' '
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<< String (c.getFloatBlue(), 3) << " c\n";
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}
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}
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void LowLevelGraphicsPostScriptRenderer::writeXY (const float x, const float y) const
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{
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out << String (x, 2) << ' '
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<< String (-y, 2) << ' ';
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}
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void LowLevelGraphicsPostScriptRenderer::writePath (const Path& path) const
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{
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out << "newpath ";
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float lastX = 0.0f;
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float lastY = 0.0f;
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int itemsOnLine = 0;
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Path::Iterator i (path);
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while (i.next())
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{
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if (++itemsOnLine == 4)
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{
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itemsOnLine = 0;
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out << '\n';
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}
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switch (i.elementType)
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{
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case Path::Iterator::startNewSubPath:
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writeXY (i.x1, i.y1);
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lastX = i.x1;
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lastY = i.y1;
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out << "m ";
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break;
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case Path::Iterator::lineTo:
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writeXY (i.x1, i.y1);
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lastX = i.x1;
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lastY = i.y1;
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out << "l ";
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break;
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case Path::Iterator::quadraticTo:
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{
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const float cp1x = lastX + (i.x1 - lastX) * 2.0f / 3.0f;
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const float cp1y = lastY + (i.y1 - lastY) * 2.0f / 3.0f;
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const float cp2x = cp1x + (i.x2 - lastX) / 3.0f;
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const float cp2y = cp1y + (i.y2 - lastY) / 3.0f;
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writeXY (cp1x, cp1y);
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writeXY (cp2x, cp2y);
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writeXY (i.x2, i.y2);
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out << "ct ";
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lastX = i.x2;
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lastY = i.y2;
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}
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break;
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case Path::Iterator::cubicTo:
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writeXY (i.x1, i.y1);
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writeXY (i.x2, i.y2);
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writeXY (i.x3, i.y3);
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out << "ct ";
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lastX = i.x3;
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lastY = i.y3;
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break;
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case Path::Iterator::closePath:
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out << "cp ";
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break;
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default:
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jassertfalse;
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break;
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}
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}
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out << '\n';
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}
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void LowLevelGraphicsPostScriptRenderer::writeTransform (const AffineTransform& trans) const
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{
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out << "[ "
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<< trans.mat00 << ' '
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<< trans.mat10 << ' '
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<< trans.mat01 << ' '
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<< trans.mat11 << ' '
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<< trans.mat02 << ' '
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<< trans.mat12 << " ] concat ";
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}
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//==============================================================================
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void LowLevelGraphicsPostScriptRenderer::setFill (const FillType& fillType)
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{
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stateStack.getLast()->fillType = fillType;
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}
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void LowLevelGraphicsPostScriptRenderer::setOpacity (float /*opacity*/)
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{
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}
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void LowLevelGraphicsPostScriptRenderer::setInterpolationQuality (Graphics::ResamplingQuality /*quality*/)
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{
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}
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//==============================================================================
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void LowLevelGraphicsPostScriptRenderer::fillRect (const Rectangle<int>& r, const bool /*replaceExistingContents*/)
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{
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fillRect (r.toFloat());
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}
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void LowLevelGraphicsPostScriptRenderer::fillRect (const Rectangle<float>& r)
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{
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if (stateStack.getLast()->fillType.isColour())
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{
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writeClip();
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writeColour (stateStack.getLast()->fillType.colour);
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auto r2 = r.translated ((float) stateStack.getLast()->xOffset,
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(float) stateStack.getLast()->yOffset);
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out << r2.getX() << ' ' << -r2.getBottom() << ' ' << r2.getWidth() << ' ' << r2.getHeight() << " rectfill\n";
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}
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else
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{
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Path p;
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p.addRectangle (r);
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fillPath (p, AffineTransform());
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}
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}
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void LowLevelGraphicsPostScriptRenderer::fillRectList (const RectangleList<float>& list)
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{
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fillPath (list.toPath(), AffineTransform());
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}
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//==============================================================================
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void LowLevelGraphicsPostScriptRenderer::fillPath (const Path& path, const AffineTransform& t)
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{
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if (stateStack.getLast()->fillType.isColour())
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{
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writeClip();
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Path p (path);
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p.applyTransform (t.translated ((float) stateStack.getLast()->xOffset,
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(float) stateStack.getLast()->yOffset));
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writePath (p);
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writeColour (stateStack.getLast()->fillType.colour);
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out << "fill\n";
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}
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else if (stateStack.getLast()->fillType.isGradient())
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{
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// this doesn't work correctly yet - it could be improved to handle solid gradients, but
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// postscript can't do semi-transparent ones.
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notPossibleInPostscriptAssert; // you can disable this warning by setting the WARN_ABOUT_NON_POSTSCRIPT_OPERATIONS flag at the top of this file
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writeClip();
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out << "gsave ";
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|
{
|
||
|
|
Path p (path);
|
||
|
|
p.applyTransform (t.translated ((float) stateStack.getLast()->xOffset, (float) stateStack.getLast()->yOffset));
|
||
|
|
writePath (p);
|
||
|
|
out << "clip\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
auto bounds = stateStack.getLast()->clip.getBounds();
|
||
|
|
|
||
|
|
// ideally this would draw lots of lines or ellipses to approximate the gradient, but for the
|
||
|
|
// time-being, this just fills it with the average colour..
|
||
|
|
writeColour (stateStack.getLast()->fillType.gradient->getColourAtPosition (0.5f));
|
||
|
|
out << bounds.getX() << ' ' << -bounds.getBottom() << ' ' << bounds.getWidth() << ' ' << bounds.getHeight() << " rectfill\n";
|
||
|
|
|
||
|
|
out << "grestore\n";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void LowLevelGraphicsPostScriptRenderer::writeImage (const Image& im,
|
||
|
|
const int sx, const int sy,
|
||
|
|
const int maxW, const int maxH) const
|
||
|
|
{
|
||
|
|
out << "{<\n";
|
||
|
|
|
||
|
|
const int w = jmin (maxW, im.getWidth());
|
||
|
|
const int h = jmin (maxH, im.getHeight());
|
||
|
|
|
||
|
|
int charsOnLine = 0;
|
||
|
|
const Image::BitmapData srcData (im, 0, 0, w, h);
|
||
|
|
Colour pixel;
|
||
|
|
|
||
|
|
for (int y = h; --y >= 0;)
|
||
|
|
{
|
||
|
|
for (int x = 0; x < w; ++x)
|
||
|
|
{
|
||
|
|
const uint8* pixelData = srcData.getPixelPointer (x, y);
|
||
|
|
|
||
|
|
if (x >= sx && y >= sy)
|
||
|
|
{
|
||
|
|
if (im.isARGB())
|
||
|
|
{
|
||
|
|
PixelARGB p (*(const PixelARGB*) pixelData);
|
||
|
|
p.unpremultiply();
|
||
|
|
pixel = Colours::white.overlaidWith (Colour (p));
|
||
|
|
}
|
||
|
|
else if (im.isRGB())
|
||
|
|
{
|
||
|
|
pixel = Colour (*((const PixelRGB*) pixelData));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
pixel = Colour ((uint8) 0, (uint8) 0, (uint8) 0, *pixelData);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
pixel = Colours::transparentWhite;
|
||
|
|
}
|
||
|
|
|
||
|
|
const uint8 pixelValues[3] = { pixel.getRed(), pixel.getGreen(), pixel.getBlue() };
|
||
|
|
|
||
|
|
out << String::toHexString (pixelValues, 3, 0);
|
||
|
|
charsOnLine += 3;
|
||
|
|
|
||
|
|
if (charsOnLine > 100)
|
||
|
|
{
|
||
|
|
out << '\n';
|
||
|
|
charsOnLine = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
out << "\n>}\n";
|
||
|
|
}
|
||
|
|
|
||
|
|
void LowLevelGraphicsPostScriptRenderer::drawImage (const Image& sourceImage, const AffineTransform& transform)
|
||
|
|
{
|
||
|
|
const int w = sourceImage.getWidth();
|
||
|
|
const int h = sourceImage.getHeight();
|
||
|
|
|
||
|
|
writeClip();
|
||
|
|
|
||
|
|
out << "gsave ";
|
||
|
|
writeTransform (transform.translated ((float) stateStack.getLast()->xOffset, (float) stateStack.getLast()->yOffset)
|
||
|
|
.scaled (1.0f, -1.0f));
|
||
|
|
|
||
|
|
RectangleList<int> imageClip;
|
||
|
|
sourceImage.createSolidAreaMask (imageClip, 0.5f);
|
||
|
|
|
||
|
|
out << "newpath ";
|
||
|
|
int itemsOnLine = 0;
|
||
|
|
|
||
|
|
for (auto& i : imageClip)
|
||
|
|
{
|
||
|
|
if (++itemsOnLine == 6)
|
||
|
|
{
|
||
|
|
out << '\n';
|
||
|
|
itemsOnLine = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
out << i.getX() << ' ' << i.getY() << ' ' << i.getWidth() << ' ' << i.getHeight() << " pr ";
|
||
|
|
}
|
||
|
|
|
||
|
|
out << " clip newpath\n";
|
||
|
|
|
||
|
|
out << w << ' ' << h << " scale\n";
|
||
|
|
out << w << ' ' << h << " 8 [" << w << " 0 0 -" << h << ' ' << (int) 0 << ' ' << h << " ]\n";
|
||
|
|
|
||
|
|
writeImage (sourceImage, 0, 0, w, h);
|
||
|
|
|
||
|
|
out << "false 3 colorimage grestore\n";
|
||
|
|
needToClip = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void LowLevelGraphicsPostScriptRenderer::drawLine (const Line <float>& line)
|
||
|
|
{
|
||
|
|
Path p;
|
||
|
|
p.addLineSegment (line, 1.0f);
|
||
|
|
fillPath (p, AffineTransform());
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void LowLevelGraphicsPostScriptRenderer::setFont (const Font& newFont)
|
||
|
|
{
|
||
|
|
stateStack.getLast()->font = newFont;
|
||
|
|
}
|
||
|
|
|
||
|
|
const Font& LowLevelGraphicsPostScriptRenderer::getFont()
|
||
|
|
{
|
||
|
|
return stateStack.getLast()->font;
|
||
|
|
}
|
||
|
|
|
||
|
|
void LowLevelGraphicsPostScriptRenderer::drawGlyph (int glyphNumber, const AffineTransform& transform)
|
||
|
|
{
|
||
|
|
Path p;
|
||
|
|
Font& font = stateStack.getLast()->font;
|
||
|
|
font.getTypefacePtr()->getOutlineForGlyph (glyphNumber, p);
|
||
|
|
fillPath (p, AffineTransform::scale (font.getHeight() * font.getHorizontalScale(), font.getHeight()).followedBy (transform));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace juce
|