com.alexvasilkov.gestures.utils

Class ClipHelper

java.lang.Object

com.alexvasilkov.gestures.utils.ClipHelper

All Implemented Interfaces:

ClipView

public class ClipHelper
extends java.lang.Object
implements ClipView

Helper class to implement view clipping (with ClipView interface). Usage: call clipView(RectF, float) method when needed and override View.draw(Canvas) method:

   public void draw(Canvas canvas) {
       clipHelper.onPreDraw(canvas);
       super.draw(canvas);
       clipHelper.onPostDraw(canvas);
   }
 

Constructor Summary

Constructors

Constructor and Description
ClipHelper(android.view.View view)

Method Summary

Modifier and Type	Method and Description
void	clipView(android.graphics.RectF rect, float rotation) Clips view so only rect part (modified by view's state) will be drawn.
void	onPostDraw(android.graphics.Canvas canvas)
void	onPreDraw(android.graphics.Canvas canvas)

Methods inherited from class java.lang.Object

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

Constructor Detail

ClipHelper

public ClipHelper(android.view.View view)

Method Detail

clipView

public void clipView(android.graphics.RectF rect,
                     float rotation)

Clips view so only rect part (modified by view's state) will be drawn.

Pass null to turn clipping off.

Specified by:

clipView in interface ClipView

onPreDraw

public void onPreDraw(android.graphics.Canvas canvas)

onPostDraw

public void onPostDraw(android.graphics.Canvas canvas)