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

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  */
   8 package org.libreoffice.canvas;
   9
  10 import android.graphics.Canvas;
  11 import android.graphics.Color;
  12 import android.graphics.Paint;
  13 import android.graphics.Rect;
  14 import android.text.TextPaint;
  15
  16 /*
  17  * A canvas element on DocumentOverlayView. Shows a rectangle with current page
  18  * number and total page number inside of it.
  19  */
  20 public class PageNumberRect extends CommonCanvasElement {
  21     private String mPageNumberString;
  22     private TextPaint mPageNumberRectPaint = new TextPaint();
  23     private Paint mBgPaint = new Paint();
  24     private Rect mTextBounds = new Rect();
  25     private float mBgMargin = 5f;
  26
  27     public PageNumberRect() {
  28         mBgPaint.setColor(Color.BLACK);
  29         mBgPaint.setAlpha(100);
  30         mPageNumberRectPaint.setColor(Color.WHITE);
  31     }
  32
  33     /**
  34      * Implement hit test here
  35      *
  36      * @param x - x coordinate of the
  37      * @param y - y coordinate of the
  38      */
  39     @Override
  40     public boolean onHitTest(float x, float y) {
  41         return false;
  42     }
  43
  44     /**
  45      * Called inside draw if the element is visible. Override this method to
  46      * draw the element on the canvas.
  47      *
  48      * @param canvas - the canvas
  49      */
  50     @Override
  51     public void onDraw(Canvas canvas) {
  52         canvas.drawRect(canvas.getWidth()*0.1f - mBgMargin,
  53                 canvas.getHeight()*0.1f - mTextBounds.height() - mBgMargin,
  54                 mTextBounds.width() + canvas.getWidth()*0.1f + mBgMargin,
  55                 canvas.getHeight()*0.1f + mBgMargin,
  56                 mBgPaint);
  57         canvas.drawText(mPageNumberString, canvas.getWidth()*0.1f, canvas.getHeight()*0.1f, mPageNumberRectPaint);
  58     }
  59
  60     public void setPageNumberString (String pageNumberString) {
  61         mPageNumberString = pageNumberString;
  62         mPageNumberRectPaint.getTextBounds(mPageNumberString, 0, mPageNumberString.length(), mTextBounds);
  63     }
  64 }