Package com.metsci.glimpse.core.context

Class GlimpseContextImpl

java.lang.Object

com.metsci.glimpse.core.context.GlimpseContextImpl

All Implemented Interfaces:

GlimpseContext

Direct Known Subclasses:

WrappedGlimpseContext

public class GlimpseContextImpl
extends Object
implements GlimpseContext

Constructor Summary

Constructors

Constructor	Description
GlimpseContextImpl(com.jogamp.opengl.GLContext context, float[] scale, int dpi)
GlimpseContextImpl(GlimpseCanvas canvas)

Method Summary

Modifier and Type	Method	Description
int	getDPI()
com.jogamp.opengl.GL	getGL()
com.jogamp.opengl.GLContext	getGLContext()
float[]	getSurfaceScale()	Returns the scale factors needed to convert the _native_ pixel coordinates to the _window_ pixel coordinates.
GlimpseTargetStack	getTargetStack()	The GlimpseTargetStack stack contains the chain of nested GlimpseTargets starting at the top level GlimpseTarget (index 0) and ending at the GlimpseTarget currently being painted to.
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

GlimpseContextImpl

public GlimpseContextImpl(com.jogamp.opengl.GLContext context,
                          float[] scale,
                          int dpi)

GlimpseContextImpl

public GlimpseContextImpl(GlimpseCanvas canvas)

Method Detail

getGLContext

public com.jogamp.opengl.GLContext getGLContext()

Specified by:

getGLContext in interface GlimpseContext

Returns:

a reference to the OpenGL rendering context wrapped by this GlimpseContext

getGL

public com.jogamp.opengl.GL getGL()

Specified by:

getGL in interface GlimpseContext

Returns:

a convenience method shorthand for the common: getGLContext( ).getGL( )

getTargetStack

public GlimpseTargetStack getTargetStack()

Description copied from interface: GlimpseContext

The GlimpseTargetStack stack contains the chain of nested GlimpseTargets starting at the top level GlimpseTarget (index 0) and ending at the GlimpseTarget currently being painted to.

The top level GlimpseTarget is always an instance of GlimpseCanvas. The other levels are instances of GlimpseLayout.

Specified by:

getTargetStack in interface GlimpseContext

getDPI

public int getDPI()

Specified by:

getDPI in interface GlimpseContext

Returns:

the ratio of pixels per inch for the current context

toString

public String toString()

Overrides:

toString in class Object

getSurfaceScale

public float[] getSurfaceScale()

Description copied from interface: GlimpseContext

Returns the scale factors needed to convert the _native_ pixel coordinates to the _window_ pixel coordinates. This only really matters on displays like like Macbook Retina.

Specified by:

getSurfaceScale in interface GlimpseContext

Returns:

the scale factors as {scaleX, scaleY}