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

   1 package org.libreoffice.canvas;
   2
   3 import android.graphics.Canvas;
   4 import android.graphics.Color;
   5 import android.graphics.Paint;
   6 import android.graphics.RectF;
   7
   8 /**
   9  * Handles the cursor drawing on the canvas.
  10  */
  11 public class Cursor extends CommonCanvasElement {
  12     private static final float CURSOR_WIDTH = 2f;
  13     private final Paint mCursorPaint = new Paint();
  14     public RectF mPosition = new RectF();
  15     public RectF mScaledPosition = new RectF();
  16
  17     /**
  18      * Construct the cursor and set the default values.
  19      */
  20     public Cursor() {
  21         mCursorPaint.setColor(Color.BLACK);
  22         mCursorPaint.setAlpha(0xFF);
  23     }
  24
  25     /**
  26      * Hit test for cursor, always false.
  27      */
  28     @Override
  29     public boolean onHitTest(float x, float y) {
  30         return false;
  31     }
  32
  33     /**
  34      * Draw the cursor.
  35      */
  36     @Override
  37     public void onDraw(Canvas canvas) {
  38         canvas.drawRect(mScaledPosition, mCursorPaint);
  39     }
  40
  41     /**
  42      * Reposition the cursor on screen.
  43      */
  44     public void reposition(RectF rect) {
  45         mScaledPosition = rect;
  46         mScaledPosition.right = mScaledPosition.left + CURSOR_WIDTH;
  47     }
  48
  49     /**
  50      * Cycle the alpha color of the cursor, makes the
  51      */
  52     public void cycleAlpha() {
  53         mCursorPaint.setAlpha(mCursorPaint.getAlpha() == 0 ? 0xFF : 0);
  54     }
  55 }