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109 lines
4.6 KiB
C++
109 lines
4.6 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-11 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#ifndef __JUCE_LOWLEVELGRAPHICSCONTEXT_JUCEHEADER__
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#define __JUCE_LOWLEVELGRAPHICSCONTEXT_JUCEHEADER__
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#include "../images/juce_Image.h"
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#include "../geometry/juce_Path.h"
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#include "../geometry/juce_RectangleList.h"
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#include "../colour/juce_ColourGradient.h"
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#include "../colour/juce_FillType.h"
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//==============================================================================
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/**
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Interface class for graphics context objects, used internally by the Graphics class.
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Users are not supposed to create instances of this class directly - do your drawing
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via the Graphics object instead.
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It's a base class for different types of graphics context, that may perform software-based
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or OS-accelerated rendering.
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E.g. the LowLevelGraphicsSoftwareRenderer renders onto an image in memory, but other
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subclasses could render directly to a windows HDC, a Quartz context, or an OpenGL
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context.
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*/
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class JUCE_API LowLevelGraphicsContext
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{
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protected:
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//==============================================================================
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LowLevelGraphicsContext();
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public:
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virtual ~LowLevelGraphicsContext();
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/** Returns true if this device is vector-based, e.g. a printer. */
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virtual bool isVectorDevice() const = 0;
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//==============================================================================
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/** Moves the origin to a new position.
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The co-ords are relative to the current origin, and indicate the new position
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of (0, 0).
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*/
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virtual void setOrigin (int x, int y) = 0;
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virtual void addTransform (const AffineTransform& transform) = 0;
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virtual float getScaleFactor() = 0;
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virtual bool clipToRectangle (const Rectangle<int>& r) = 0;
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virtual bool clipToRectangleList (const RectangleList& clipRegion) = 0;
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virtual void excludeClipRectangle (const Rectangle<int>& r) = 0;
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virtual void clipToPath (const Path& path, const AffineTransform& transform) = 0;
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virtual void clipToImageAlpha (const Image& sourceImage, const AffineTransform& transform) = 0;
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virtual bool clipRegionIntersects (const Rectangle<int>& r) = 0;
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virtual Rectangle<int> getClipBounds() const = 0;
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virtual bool isClipEmpty() const = 0;
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virtual void saveState() = 0;
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virtual void restoreState() = 0;
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virtual void beginTransparencyLayer (float opacity) = 0;
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virtual void endTransparencyLayer() = 0;
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//==============================================================================
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virtual void setFill (const FillType& fillType) = 0;
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virtual void setOpacity (float newOpacity) = 0;
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virtual void setInterpolationQuality (Graphics::ResamplingQuality quality) = 0;
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//==============================================================================
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virtual void fillRect (const Rectangle<int>& r, bool replaceExistingContents) = 0;
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virtual void fillPath (const Path& path, const AffineTransform& transform) = 0;
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virtual void drawImage (const Image& sourceImage, const AffineTransform& transform, bool fillEntireClipAsTiles) = 0;
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virtual void drawLine (const Line <float>& line) = 0;
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virtual void drawVerticalLine (int x, float top, float bottom) = 0;
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virtual void drawHorizontalLine (int y, float left, float right) = 0;
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virtual void setFont (const Font& newFont) = 0;
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virtual Font getFont() = 0;
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virtual void drawGlyph (int glyphNumber, const AffineTransform& transform) = 0;
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};
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#endif // __JUCE_LOWLEVELGRAPHICSCONTEXT_JUCEHEADER__
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