devliving.online.cvscanner.camera

Class GraphicOverlay.Graphic

java.lang.Object

devliving.online.cvscanner.camera.GraphicOverlay.Graphic

Direct Known Subclasses:

DocumentGraphic, FrameGraphic

Enclosing class:

GraphicOverlay<T extends GraphicOverlay.Graphic>

public abstract static class GraphicOverlay.Graphic
extends java.lang.Object

Base class for a custom graphics object to be rendered within the graphic overlay. Subclass this and implement the draw(Canvas) method to define the graphics element. Add instances to the overlay using GraphicOverlay.add(Graphic).

Field Summary

Fields

Modifier and Type	Field and Description
protected GraphicOverlay	mOverlay

Constructor Summary

Constructors

Constructor and Description
Graphic(GraphicOverlay overlay)

Method Summary

Modifier and Type	Method and Description
abstract void	draw(android.graphics.Canvas canvas) Draw the graphic on the supplied canvas.
void	postInvalidate()
float	scaleX(float horizontal) Adjusts a horizontal value of the supplied value from the preview scale to the view scale.
float	scaleY(float vertical) Adjusts a vertical value of the supplied value from the preview scale to the view scale.
float	translateX(float x) Adjusts the x coordinate from the preview's coordinate system to the view coordinate system.
float	translateY(float y) Adjusts the y coordinate from the preview's coordinate system to the view coordinate system.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mOverlay

protected GraphicOverlay mOverlay

Constructor Detail

Graphic

public Graphic(GraphicOverlay overlay)

Method Detail

draw

public abstract void draw(android.graphics.Canvas canvas)

Draw the graphic on the supplied canvas. Drawing should use the following methods to convert to view coordinates for the graphics that are drawn:

1. scaleX(float) and scaleY(float) adjust the size of the supplied value from the preview scale to the view scale.
2. translateX(float) and translateY(float) adjust the coordinate from the preview's coordinate system to the view coordinate system.

Parameters:

canvas - drawing canvas

scaleX

public float scaleX(float horizontal)

Adjusts a horizontal value of the supplied value from the preview scale to the view scale.

scaleY

public float scaleY(float vertical)

Adjusts a vertical value of the supplied value from the preview scale to the view scale.

translateX

public float translateX(float x)

Adjusts the x coordinate from the preview's coordinate system to the view coordinate system.

translateY

public float translateY(float y)

Adjusts the y coordinate from the preview's coordinate system to the view coordinate system.

postInvalidate

public void postInvalidate()