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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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