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/*
* Copyright (c) 2008, 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.
*
* 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.
*/
/**
* @test
* @bug 6679308
* @summary test drawing to Alpha surfaces
*/
import java.awt.*;
import java.awt.image.*;
public class AlphaSurfaceText {
int wid=400, hgt=200;
public AlphaSurfaceText(int biType, Color c) {
BufferedImage opaquebi0 =
new BufferedImage(wid, hgt, BufferedImage.TYPE_INT_RGB);
drawText(opaquebi0, c);
BufferedImage alphabi = new BufferedImage(wid, hgt, biType);
drawText(alphabi, c);
BufferedImage opaquebi1 =
new BufferedImage(wid, hgt, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = opaquebi1.createGraphics();
g2d.drawImage(alphabi, 0, 0, null);
compare(opaquebi0, opaquebi1, biType, c);
}
private void drawText(BufferedImage bi, Color c) {
Graphics2D g = bi.createGraphics();
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g.setColor(c);
g.setFont(new Font("sansserif", Font.PLAIN, 70));
g.drawString("Hello!", 20, 100);
g.setFont(new Font("sansserif", Font.PLAIN, 12));
g.drawString("Hello!", 20, 130);
g.setFont(new Font("sansserif", Font.PLAIN, 10));
g.drawString("Hello!", 20, 150);
}
// Need to allow for minimal rounding error, so allow each component
// to differ by 1.
void compare(BufferedImage bi0, BufferedImage bi1, int biType, Color c) {
for (int x=0; x<wid; x++) {
for (int y=0; y<hgt; y++) {
int rgb0 = bi0.getRGB(x, y);
int rgb1 = bi1.getRGB(x, y);
if (rgb0 == rgb1) continue;
int r0 = (rgb0 & 0xff0000) >> 16;
int r1 = (rgb1 & 0xff0000) >> 16;
int rdiff = r0-r1; if (rdiff<0) rdiff = -rdiff;
int g0 = (rgb0 & 0x00ff00) >> 8;
int g1 = (rgb1 & 0x00ff00) >> 8;
int gdiff = g0-g1; if (gdiff<0) gdiff = -gdiff;
int b0 = (rgb0 & 0x0000ff);
int b1 = (rgb1 & 0x0000ff);
int bdiff = b0-b1; if (bdiff<0) bdiff = -bdiff;
if (rdiff > 1 || gdiff > 1 || bdiff > 1) {
throw new RuntimeException(
"Images differ for type "+biType + " col="+c +
" at x=" + x + " y="+ y + " " +
Integer.toHexString(rgb0) + " vs " +
Integer.toHexString(rgb1));
}
}
}
}
public static void main(String[] args) {
new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.white);
new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.red);
new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.blue);
new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.white);
new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.red);
new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.blue);
new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.white);
new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.red);
new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.blue);
new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.white);
new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.red);
new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.blue);
}
}
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