/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package complex.bean;
import java.io.File;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.awt.image.PixelGrabber;
import javax.imageio.ImageIO;
class ScreenComparer
{
private Rectangle m_rect;
private BufferedImage m_img1;
private BufferedImage m_img2;
private BufferedImage m_imgDiff;
private int m_diffColor;
public ScreenComparer(
int x,
int y,
int width,
int height)
{
this(
new Rectangle(x, y, width, height));
}
private ScreenComparer(Rectangle location)
{
m_rect = location;
int red = 0xff;
int alpha = 0xff;
m_diffColor = (alpha << 24);
m_diffColor = m_diffColor | (red << 16);
}
public ScreenComparer()
{
this(
new Rectangle(0, 0, 0, 0));
}
public void reset()
{
m_rect =
null;
m_img1 =
null;
m_img2 =
null;
m_imgDiff =
null;
}
public void grabOne()
throws Exception
{
grabOne(m_rect);
}
public void grabOne(Rectangle r)
throws Exception
{
java.awt.Robot robot =
new java.awt.Robot();
m_img1 = robot.createScreenCapture(r);
}
public void grabTwo()
throws Exception
{
grabTwo(m_rect);
}
public void grabTwo(Rectangle r)
throws Exception
{
java.awt.Robot robot =
new java.awt.Robot();
m_img2 = robot.createScreenCapture(r);
}
public boolean compare()
throws Exception
{
if (m_img1 ==
null || m_img2 ==
null)
{
throw new Exception(
"Only one image captured!");
}
boolean ret =
true;
int w1 = m_img1.getWidth();
int h1 = m_img1.getHeight();
int w2 = m_img2.getWidth();
int h2 = m_img2.getHeight();
if (w1 != w2 || h1 != h2)
{
System.out.println(
"### 1\n");
//Different size. Create an image that holds both images.
int w = w1 > w2 ? w1 : w2;
int h = h1 > h2 ? h1 : h2;
m_imgDiff =
new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
for (
int y = 0; y < h; y ++)
{
for (
int x = 0; x < w; x++)
{
boolean bOutOfRange =
false;
int pixel1 = 0;
int pixel2 = 0;
//get the pixel for m_img1
if (x < w1 && y < h1)
{
pixel1 = m_img1.getRGB(x, y);
}
else
{
bOutOfRange =
true;
}
if (x < w2 && y < h2)
{
pixel2 = m_img2.getRGB(x, y);
}
else
{
bOutOfRange =
true;
}
if (bOutOfRange || pixel1 != pixel2)
{
m_imgDiff.setRGB(x, y, m_diffColor);
}
else
{
m_imgDiff.setRGB(x, y, pixel1);
}
}
}
return false;
}
//Images have same dimension
int[] pixels1 =
new int[w1 * h1];
PixelGrabber pg =
new PixelGrabber(
m_img1.getSource(), 0, 0, w1, h1, pixels1, 0, w1);
pg.grabPixels();
int[] pixels2 =
new int[w2 * h2];
PixelGrabber pg2 =
new PixelGrabber(
m_img2.getSource(), 0, 0, w2, h2, pixels2, 0, w2);
pg2.grabPixels();
m_imgDiff =
new BufferedImage(w1, h1, BufferedImage.TYPE_INT_ARGB);
//First check if the images differ.
int lenAr = pixels1.length;
int index = 0;
for (index = 0; index < lenAr; index++)
{
if (pixels1[index] != pixels2[index])
{
break;
}
}
//If the images are different, then create the diff image
if (index < lenAr)
{
for (
int y = 0; y < h1; y++)
{
for (
int x = 0; x < w1; x++)
{
int offset = y * w1 + x;
if (pixels1[offset] != pixels2[offset])
{
ret = ret &&
false;
m_imgDiff.setRGB(x, y, m_diffColor);
}
else
{
m_imgDiff.setRGB(x, y, pixels1[offset]);
}
}
}
}
return ret;
}
/** Writes Images to a location. The
* directory is determined by the java property OOoBean.Images
*
*/
public void writeImages()
throws Exception
{
String imgLocation = System.getProperty(
"OOoBean.Images",
"");
File file_tmp = File.createTempFile(
"OOoBean",
"",
new File(imgLocation));
File file1 =
new File(file_tmp.getPath()+
".png");
file_tmp.
delete();
if (m_img1 !=
null)
{
ImageIO.write(m_img1,
"png", file1);
System.out.println(
"\nCompared images:");
System.out.println(
"1. " + file1.getPath());
}
file1=
null;
file_tmp=
null;
file_tmp = File.createTempFile(
"OOoBean",
"",
new File(imgLocation));
file1 =
new File(file_tmp.getPath()+
".png");
file_tmp.
delete();
if (m_img2 !=
null)
{
ImageIO.write(m_img2,
"png", file1);
System.out.println(
"2. " + file1.getPath());
}
file1=
null;
file_tmp=
null;
file_tmp = File.createTempFile(
"OOoBean",
"_diff",
new File(imgLocation));
file1 =
new File(file_tmp.getPath()+
".png");
file_tmp.
delete();
if (m_imgDiff !=
null)
{
ImageIO.write(m_imgDiff,
"png", file1);
System.out.println(
"Diff image: " + file1.getPath() +
"\n");
}
}
}