Backend

public interface Backend
extends org.graphstream.ui.view.camera.Backend

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`Shape`	`chooseEdgeArrowShape(Shape oldShape, org.graphstream.ui.graphicGraph.StyleGroup group)`
`Shape`	`chooseEdgeShape(Shape oldShape, org.graphstream.ui.graphicGraph.StyleGroup group)`
`GraphBackgroundRenderer`	`chooseGraphBackgroundRenderer()`
`Shape`	`chooseNodeShape(Shape oldShape, org.graphstream.ui.graphicGraph.StyleGroup group)`
`Shape`	`chooseSpriteShape(Shape oldShape, org.graphstream.ui.graphicGraph.StyleGroup group)`
`void`	`close()` Called after finished using this object.
`android.view.SurfaceView`	`drawingSurface()` The drawing surface.
`android.graphics.Matrix`	`getMatrix()` Access to currentTransform
`android.graphics.Matrix`	`getMatrixSurface()`
`android.graphics.Paint`	`getPaint()` The brush for Canvas
`android.graphics.Canvas`	`graphics2D()` The Java2D graphics.
`void`	`open(android.view.SurfaceView drawingSurface)` Called before any prior use of this back-end.
`void`	`prepareNewFrame(android.graphics.Canvas g2)` Setup the back-end for a new rendering session.
`void`	`setMatrix(android.graphics.Matrix m)`

Methods inherited from interface org.graphstream.ui.view.camera.Backend
beginTransform, endTransform, inverseTransform, inverseTransform, popTransform, pushTransform, rotate, scale, setAntialias, setIdentity, setQuality, transform, transform, translate

void open(android.view.SurfaceView drawingSurface)

Called before any prior use of this back-end.

prepareNewFrame
```
void prepareNewFrame(android.graphics.Canvas g2)
```
Setup the back-end for a new rendering session.

Shape chooseNodeShape(Shape oldShape,
                      org.graphstream.ui.graphicGraph.StyleGroup group)

Shape chooseEdgeShape(Shape oldShape,
                      org.graphstream.ui.graphicGraph.StyleGroup group)

Shape chooseEdgeArrowShape(Shape oldShape,
                           org.graphstream.ui.graphicGraph.StyleGroup group)

Shape chooseSpriteShape(Shape oldShape,
                        org.graphstream.ui.graphicGraph.StyleGroup group)

GraphBackgroundRenderer chooseGraphBackgroundRenderer()

drawingSurface
```
android.view.SurfaceView drawingSurface()
```
The drawing surface. The drawing surface may be different than the one passed as argument to open(), the back-end is free to create a new surface as it sees fit.

getMatrix
```
android.graphics.Matrix getMatrix()
```
Access to currentTransform

android.graphics.Matrix getMatrixSurface()

void setMatrix(android.graphics.Matrix m)

Interface Backend