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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
#ifndef JUCE_LOWLEVELGRAPHICSCONTEXT_H_INCLUDED
#define JUCE_LOWLEVELGRAPHICSCONTEXT_H_INCLUDED
//==============================================================================
/**
Interface class for graphics context objects, used internally by the Graphics class.
Users are not supposed to create instances of this class directly - do your drawing
via the Graphics object instead.
It's a base class for different types of graphics context, that may perform software-based
or OS-accelerated rendering.
E.g. the LowLevelGraphicsSoftwareRenderer renders onto an image in memory, but other
subclasses could render directly to a windows HDC, a Quartz context, or an OpenGL
context.
*/
class JUCE_API LowLevelGraphicsContext
{
protected:
//==============================================================================
LowLevelGraphicsContext();
public:
virtual ~LowLevelGraphicsContext();
/** Returns true if this device is vector-based, e.g. a printer. */
virtual bool isVectorDevice() const = 0;
//==============================================================================
/** Moves the origin to a new position.
The coordinates are relative to the current origin, and indicate the new position
of (0, 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 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; }
};
#endif // JUCE_LOWLEVELGRAPHICSCONTEXT_H_INCLUDED
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