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

   1 package org.libreoffice.canvas;
   2
   3 import android.content.Context;
   4 import android.graphics.Bitmap;
   5 import android.graphics.Canvas;
   6 import android.graphics.RectF;
   7 import android.graphics.drawable.Drawable;
   8 import androidx.core.content.ContextCompat;
   9
  10 /**
  11  * Bitmap handle canvas element is used to show a handle on the screen.
  12  * The handle visual comes from the bitmap, which must be provided in time
  13  * of construction.
  14  */
  15 public abstract class BitmapHandle extends CommonCanvasElement {
  16     public final RectF mDocumentPosition;
  17     private final Bitmap mBitmap;
  18     final RectF mScreenPosition;
  19
  20     BitmapHandle(Bitmap bitmap) {
  21         mBitmap = bitmap;
  22         mScreenPosition = new RectF(0, 0, mBitmap.getWidth(), mBitmap.getHeight());
  23         mDocumentPosition = new RectF();
  24     }
  25
  26     /**
  27      * Return a bitmap for a drawable id.
  28      */
  29     static Bitmap getBitmapForDrawable(Context context, int drawableId) {
  30         Drawable drawable = ContextCompat.getDrawable(context, drawableId);
  31
  32         return ImageUtils.getBitmapForDrawable(drawable);
  33     }
  34
  35     /**
  36      * Draw the bitmap handle to the canvas.
  37      * @param canvas - the canvas
  38      */
  39     @Override
  40     public void onDraw(Canvas canvas) {
  41         canvas.drawBitmap(mBitmap, mScreenPosition.left, mScreenPosition.top, null);
  42     }
  43
  44     /**
  45      * Test if the bitmap has been hit.
  46      * @param x - x coordinate
  47      * @param y - y coordinate
  48      * @return true if the bitmap has been hit
  49      */
  50     @Override
  51     public boolean onHitTest(float x, float y) {
  52         return mScreenPosition.contains(x, y);
  53     }
  54
  55     /**
  56      * Change the position of the handle.
  57      * @param x - x coordinate
  58      * @param y - y coordinate
  59      */
  60     public void reposition(float x, float y) {
  61         mScreenPosition.offsetTo(x, y);
  62     }
  63 }