JUCE  v6.1.6 (6.0.8-1114)
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Public Member Functions | Protected Member Functions | List of all members
juce::LowLevelGraphicsContext Class Referenceabstract

Interface class for graphics context objects, used internally by the Graphics class. More...

#include <juce_LowLevelGraphicsContext.h>

Inheritance diagram for juce::LowLevelGraphicsContext:
Inheritance graph
[legend]

Public Member Functions

virtual ~LowLevelGraphicsContext ()=default
 
virtual void addTransform (const AffineTransform &)=0
 
virtual void beginTransparencyLayer (float opacity)=0
 
virtual bool clipRegionIntersects (const Rectangle< int > &)=0
 
virtual void clipToImageAlpha (const Image &, const AffineTransform &)=0
 
virtual void clipToPath (const Path &, const AffineTransform &)=0
 
virtual bool clipToRectangle (const Rectangle< int > &)=0
 
virtual bool clipToRectangleList (const RectangleList< int > &)=0
 
virtual void drawGlyph (int glyphNumber, const AffineTransform &)=0
 
virtual void drawImage (const Image &, const AffineTransform &)=0
 
virtual void drawLine (const Line< float > &)=0
 
virtual bool drawTextLayout (const AttributedString &, const Rectangle< float > &)
 
virtual void endTransparencyLayer ()=0
 
virtual void excludeClipRectangle (const Rectangle< int > &)=0
 
virtual void fillPath (const Path &, const AffineTransform &)=0
 
virtual void fillRect (const Rectangle< float > &)=0
 
virtual void fillRect (const Rectangle< int > &, bool replaceExistingContents)=0
 
virtual void fillRectList (const RectangleList< float > &)=0
 
virtual Rectangle< int > getClipBounds () const =0
 
virtual const Font & getFont ()=0
 
virtual float getPhysicalPixelScaleFactor ()=0
 
virtual bool isClipEmpty () const =0
 
virtual bool isVectorDevice () const =0
 Returns true if this device is vector-based, e.g. More...
 
virtual void restoreState ()=0
 
virtual void saveState ()=0
 
virtual void setFill (const FillType &)=0
 
virtual void setFont (const Font &)=0
 
virtual void setInterpolationQuality (Graphics::ResamplingQuality)=0
 
virtual void setOpacity (float)=0
 
virtual void setOrigin (Point< int >)=0
 Moves the origin to a new position. More...
 

Protected Member Functions

 LowLevelGraphicsContext ()=default
 

Detailed Description

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.

@tags{Graphics}

Constructor & Destructor Documentation

◆ LowLevelGraphicsContext()

juce::LowLevelGraphicsContext::LowLevelGraphicsContext ( )
protecteddefault

◆ ~LowLevelGraphicsContext()

virtual juce::LowLevelGraphicsContext::~LowLevelGraphicsContext ( )
virtualdefault

Member Function Documentation

◆ addTransform()

virtual void juce::LowLevelGraphicsContext::addTransform ( const AffineTransform &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ beginTransparencyLayer()

virtual void juce::LowLevelGraphicsContext::beginTransparencyLayer ( float  opacity)
pure virtual

Implemented in juce::LowLevelGraphicsPostScriptRenderer, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, and juce::Direct2DLowLevelGraphicsContext.

◆ clipRegionIntersects()

virtual bool juce::LowLevelGraphicsContext::clipRegionIntersects ( const Rectangle< int > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ clipToImageAlpha()

virtual void juce::LowLevelGraphicsContext::clipToImageAlpha ( const Image &  ,
const AffineTransform &   
)
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ clipToPath()

virtual void juce::LowLevelGraphicsContext::clipToPath ( const Path &  ,
const AffineTransform &   
)
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ clipToRectangle()

virtual bool juce::LowLevelGraphicsContext::clipToRectangle ( const Rectangle< int > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ clipToRectangleList()

virtual bool juce::LowLevelGraphicsContext::clipToRectangleList ( const RectangleList< int > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ drawGlyph()

virtual void juce::LowLevelGraphicsContext::drawGlyph ( int  glyphNumber,
const AffineTransform &   
)
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ drawImage()

virtual void juce::LowLevelGraphicsContext::drawImage ( const Image &  ,
const AffineTransform &   
)
pure virtual

Implemented in juce::CoreGraphicsContext, juce::Direct2DLowLevelGraphicsContext, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, and juce::LowLevelGraphicsPostScriptRenderer.

◆ drawLine()

virtual void juce::LowLevelGraphicsContext::drawLine ( const Line< float > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ drawTextLayout()

virtual bool juce::LowLevelGraphicsContext::drawTextLayout ( const AttributedString &  ,
const Rectangle< float > &   
)
inlinevirtual

Reimplemented in juce::CoreGraphicsContext, and juce::Direct2DLowLevelGraphicsContext.

◆ endTransparencyLayer()

virtual void juce::LowLevelGraphicsContext::endTransparencyLayer ( )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ excludeClipRectangle()

virtual void juce::LowLevelGraphicsContext::excludeClipRectangle ( const Rectangle< int > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ fillPath()

virtual void juce::LowLevelGraphicsContext::fillPath ( const Path &  ,
const AffineTransform &   
)
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ fillRect() [1/2]

virtual void juce::LowLevelGraphicsContext::fillRect ( const Rectangle< float > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ fillRect() [2/2]

virtual void juce::LowLevelGraphicsContext::fillRect ( const Rectangle< int > &  ,
bool  replaceExistingContents 
)
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ fillRectList()

virtual void juce::LowLevelGraphicsContext::fillRectList ( const RectangleList< float > &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ getClipBounds()

virtual Rectangle<int> juce::LowLevelGraphicsContext::getClipBounds ( ) const
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ getFont()

virtual const Font& juce::LowLevelGraphicsContext::getFont ( )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ getPhysicalPixelScaleFactor()

virtual float juce::LowLevelGraphicsContext::getPhysicalPixelScaleFactor ( )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ isClipEmpty()

virtual bool juce::LowLevelGraphicsContext::isClipEmpty ( ) const
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ isVectorDevice()

virtual bool juce::LowLevelGraphicsContext::isVectorDevice ( ) const
pure virtual

Returns true if this device is vector-based, e.g.

a printer.

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ restoreState()

virtual void juce::LowLevelGraphicsContext::restoreState ( )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ saveState()

virtual void juce::LowLevelGraphicsContext::saveState ( )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ setFill()

virtual void juce::LowLevelGraphicsContext::setFill ( const FillType &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ setFont()

virtual void juce::LowLevelGraphicsContext::setFont ( const Font &  )
pure virtual

Implemented in juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >, juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, and juce::Direct2DLowLevelGraphicsContext.

◆ setInterpolationQuality()

virtual void juce::LowLevelGraphicsContext::setInterpolationQuality ( Graphics::ResamplingQuality  )
pure virtual

Implemented in juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, juce::Direct2DLowLevelGraphicsContext, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, and juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >.

◆ setOpacity()

virtual void juce::LowLevelGraphicsContext::setOpacity ( float  )
pure virtual

Implemented in juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, juce::Direct2DLowLevelGraphicsContext, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, and juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >.

◆ setOrigin()

virtual void juce::LowLevelGraphicsContext::setOrigin ( Point< int >  )
pure virtual

Moves the origin to a new position.

The coordinates are relative to the current origin, and indicate the new position of (0, 0).

Implemented in juce::CoreGraphicsContext, juce::LowLevelGraphicsPostScriptRenderer, juce::Direct2DLowLevelGraphicsContext, juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< SavedStateType >, and juce::RenderingHelpers::StackBasedLowLevelGraphicsContext< RenderingHelpers::SoftwareRendererSavedState >.

The documentation for this class was generated from the following file: