com.sun.javafx.robot.FXRobotImage Maven / Gradle / Ivy
/*
* Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.robot;
import java.nio.Buffer;
import java.nio.IntBuffer;
/**
* This class encapsulates a bucket of pixels stored in IntArgbPre format.
*
*/
public class FXRobotImage {
private final IntBuffer pixelBuffer;
private final int width;
private final int height;
private final int scanlineStride;
public static FXRobotImage create(Buffer pixelBuffer,
int width, int height, int scanlineStride)
{
return new FXRobotImage(pixelBuffer, width, height, scanlineStride);
}
private FXRobotImage(Buffer pixelBuffer,
int width, int height, int scanlineStride)
{
if (pixelBuffer == null) {
throw new IllegalArgumentException("Pixel buffer must be non-null");
}
if (width <= 0 || height <= 0) {
throw new IllegalArgumentException("Image dimensions must be > 0");
}
this.pixelBuffer = (IntBuffer)pixelBuffer;
this.width = width;
this.height = height;
this.scanlineStride = scanlineStride;
}
/**
* Returns {@link java.nio.Buffer} which holds the data.
*
* @return {@code Buffer} holding the data for this image
*/
public Buffer getPixelBuffer() {
return pixelBuffer;
}
/**
* Width of the image.
* @return width
*/
public int getWidth() {
return width;
}
/**
* Height of the image
* @return height
*/
public int getHeight() {
return height;
}
/**
* Returns scanline stride of this image in bytes
*
* @return scan line stride in bytes
*/
public int getScanlineStride() {
return scanlineStride;
}
/**
* Returns pixel stride of this image in bytes.
*
* @return pixel stride in bytes
*/
public int getPixelStride() {
return 4;
}
/**
* Returns pixel (in IntArgbPre) format (Argb premultiplied).
*
* @param x coordinate
* @param y coordinate
* @return pixel in IntArgbPre format
*/
public int getArgbPre(int x, int y) {
if (x < 0 || x >= width || y < 0 || y >= height) {
throw new IllegalArgumentException("x,y must be >0, = width || y < 0 || y >= height) {
throw new IllegalArgumentException("x,y must be >0, > 24) == -1) {
return argb;
}
int a = argb >>> 24;
int r = (argb >> 16) & 0xff;
int g = (argb >> 8) & 0xff;
int b = (argb ) & 0xff;
int a2 = a + (a >> 7);
r = (r * a2) >> 8;
g = (g * a2) >> 8;
b = (b * a2) >> 8;
return ((a << 24) | (r << 16) | (g << 8) | (b));
}
@Override
public String toString() {
return super.toString() +
" [format=INT_ARGB_PRE width=" + width + " height=" + height +
" scanlineStride=" + scanlineStride +" pixelStride=" + getPixelStride()+
" pixelBuffer=" + pixelBuffer + "]";
}
}