android/source/src/java/org/libreoffice/canvas/CommonCanvasElement.java

   1 package org.libreoffice.canvas;
   2
   3 import android.graphics.Canvas;
   4
   5 /**
   6  * Common implementation to canvas elements.
   7  */
   8 public abstract class CommonCanvasElement implements CanvasElement, CanvasElementImplRequirement {
   9
  10     private boolean mVisible = false;
  11
  12     /**
  13      * Is element visible?
  14      */
  15     @Override
  16     public boolean isVisible() {
  17         return mVisible;
  18     }
  19
  20     /**
  21      * Set element visibility.
  22      */
  23     @Override
  24     public void setVisible(boolean visible) {
  25         mVisible = visible;
  26     }
  27
  28     /**
  29      * Trigger drawing the element on the canvas.
  30      */
  31     @Override
  32     public void draw(Canvas canvas) {
  33         if (isVisible()) {
  34             onDraw(canvas);
  35         }
  36     }
  37
  38     /**
  39      * Hit test. Return true if the element was hit. Directly return false if
  40      * the element is invisible.
  41      */
  42     @Override
  43     public boolean contains(float x, float y) {
  44         return isVisible() && onHitTest(x, y);
  45     }
  46 }