107 lines
4.4 KiB
Java
107 lines
4.4 KiB
Java
/*
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* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 6679308
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* @summary test drawing to Alpha surfaces
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*/
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import java.awt.*;
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import java.awt.image.*;
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public class AlphaSurfaceText {
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int wid=400, hgt=200;
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public AlphaSurfaceText(int biType, Color c) {
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BufferedImage opaquebi0 =
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new BufferedImage(wid, hgt, BufferedImage.TYPE_INT_RGB);
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drawText(opaquebi0, c);
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BufferedImage alphabi = new BufferedImage(wid, hgt, biType);
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drawText(alphabi, c);
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BufferedImage opaquebi1 =
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new BufferedImage(wid, hgt, BufferedImage.TYPE_INT_RGB);
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Graphics2D g2d = opaquebi1.createGraphics();
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g2d.drawImage(alphabi, 0, 0, null);
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compare(opaquebi0, opaquebi1, biType, c);
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}
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private void drawText(BufferedImage bi, Color c) {
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Graphics2D g = bi.createGraphics();
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g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
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RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
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g.setColor(c);
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g.setFont(new Font("sansserif", Font.PLAIN, 70));
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g.drawString("Hello!", 20, 100);
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g.setFont(new Font("sansserif", Font.PLAIN, 12));
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g.drawString("Hello!", 20, 130);
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g.setFont(new Font("sansserif", Font.PLAIN, 10));
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g.drawString("Hello!", 20, 150);
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}
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// Need to allow for minimal rounding error, so allow each component
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// to differ by 1.
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void compare(BufferedImage bi0, BufferedImage bi1, int biType, Color c) {
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for (int x=0; x<wid; x++) {
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for (int y=0; y<hgt; y++) {
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int rgb0 = bi0.getRGB(x, y);
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int rgb1 = bi1.getRGB(x, y);
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if (rgb0 == rgb1) continue;
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int r0 = (rgb0 & 0xff0000) >> 16;
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int r1 = (rgb1 & 0xff0000) >> 16;
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int rdiff = r0-r1; if (rdiff<0) rdiff = -rdiff;
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int g0 = (rgb0 & 0x00ff00) >> 8;
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int g1 = (rgb1 & 0x00ff00) >> 8;
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int gdiff = g0-g1; if (gdiff<0) gdiff = -gdiff;
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int b0 = (rgb0 & 0x0000ff);
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int b1 = (rgb1 & 0x0000ff);
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int bdiff = b0-b1; if (bdiff<0) bdiff = -bdiff;
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if (rdiff > 1 || gdiff > 1 || bdiff > 1) {
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throw new RuntimeException(
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"Images differ for type "+biType + " col="+c +
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" at x=" + x + " y="+ y + " " +
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Integer.toHexString(rgb0) + " vs " +
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Integer.toHexString(rgb1));
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}
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}
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}
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}
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public static void main(String[] args) {
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new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.white);
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new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.red);
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new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.blue);
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new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.white);
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new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.red);
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new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.blue);
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new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.white);
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new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.red);
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new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.blue);
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new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.white);
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new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.red);
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new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.blue);
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}
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}
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