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- /*
- ==============================================================================
-
- This file is part of the JUCE library.
- Copyright (c) 2017 - ROLI Ltd.
-
- 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 5 End-User License
- Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
- 27th April 2017).
-
- End User License Agreement: www.juce.com/juce-5-licence
- Privacy Policy: www.juce.com/juce-5-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.
-
- ==============================================================================
- */
-
- #pragma once
-
-
- //==============================================================================
- /**
- 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; }
- };
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