juce_LowLevelGraphicsContext.h

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
//==============================================================================
class JUCE_API  LowLevelGraphicsContext
{
protected:
    //==============================================================================
    LowLevelGraphicsContext() = default;
 
public:
    virtual ~LowLevelGraphicsContext() = default;
 
    virtual bool isVectorDevice() const = 0;
 
    //==============================================================================
    virtual void setOrigin (Point<int>) = 0;
    virtual void addTransform (const AffineTransform&) = 0;
    virtual float getPhysicalPixelScaleFactor() = 0;
 
    virtual bool clipToRectangle (const Rectangle<int>&) = 0;
    virtual bool clipToRectangleList (const RectangleList<int>&) = 0;
    virtual void excludeClipRectangle (const Rectangle<int>&) = 0;
    virtual void clipToPath (const Path&, const AffineTransform&) = 0;
    virtual void clipToImageAlpha (const Image&, const AffineTransform&) = 0;
 
    virtual bool clipRegionIntersects (const Rectangle<int>&) = 0;
    virtual Rectangle<int> getClipBounds() const = 0;
    virtual bool isClipEmpty() const = 0;
 
    virtual void saveState() = 0;
    virtual void restoreState() = 0;
 
    virtual void beginTransparencyLayer (float opacity) = 0;
    virtual void endTransparencyLayer() = 0;
 
    //==============================================================================
    virtual void setFill (const FillType&) = 0;
    virtual void setOpacity (float) = 0;
    virtual void setInterpolationQuality (Graphics::ResamplingQuality) = 0;
 
    //==============================================================================
    virtual void fillAll() { fillRect (getClipBounds(), false); }
    virtual void fillRect (const Rectangle<int>&, bool replaceExistingContents) = 0;
    virtual void fillRect (const Rectangle<float>&) = 0;
    virtual void fillRectList (const RectangleList<float>&) = 0;
    virtual void fillPath (const Path&, const AffineTransform&) = 0;
    virtual void drawImage (const Image&, const AffineTransform&) = 0;
    virtual void drawLine (const Line<float>&) = 0;
 
    virtual void setFont (const Font&) = 0;
    virtual const Font& getFont() = 0;
    virtual void drawGlyph (int glyphNumber, const AffineTransform&) = 0;
    virtual bool drawTextLayout (const AttributedString&, const Rectangle<float>&)  { return false; }
};
 
} // namespace juce