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Java example source code file (InsetClipping.java)
The InsetClipping.java Java example source code/* * Copyright (c) 2003, 2010, 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 4873505 6588884 * @author cheth * @summary verifies that drawImage behaves the bounds of a complex * clip shape. This was a problem with our GDI renderer on Windows, where * we would ignore the window insets. * @run main InsetClipping */ /** * This test works by setting up a clip area that equals the visible area * of the Frame. When we perform any rendering operation to that window, * we should not see the results of the operation because they should be * clipped out. We create an Image with one color (red) and use a * different background fill color (blue). We fill the area with the * background color, then set the clip, then draw the image; if we detect * the image color at pixel (0, 0) then we did not clip correctly and the * test fails. */ import java.awt.*; import java.awt.geom.*; import java.awt.image.*; public class InsetClipping extends Frame { BufferedImage image; Area area; static boolean painted = false; static Color imageColor = Color.red; static Color fillColor = Color.blue; public InsetClipping() { image = new BufferedImage( 300, 300,BufferedImage.TYPE_INT_RGB); Graphics g2 = image.createGraphics(); g2.setColor(imageColor); g2.fillRect(0,0, 300,300); } public void paint(Graphics g) { Insets insets = getInsets(); area = new Area( new Rectangle(0,0, getWidth(), getHeight())); area.subtract(new Area(new Rectangle(insets.left, insets.top, getWidth() - insets.right, getHeight() - insets.bottom))); g.setColor(fillColor); g.fillRect(0, 0, getWidth(), getHeight()); g.setClip(area); g.drawImage(image, 0, 0, null); painted = true; } public static void main(String args[]) { InsetClipping clipTest = new InsetClipping(); clipTest.setSize(300, 300); clipTest.setVisible(true); while (!painted) { try { Thread.sleep(100); } catch (Exception e) {} } try { Thread.sleep(2000); } catch (InterruptedException ex) {} try { Robot robot = new Robot(); Point clientLoc = clipTest.getLocationOnScreen(); Insets insets = clipTest.getInsets(); clientLoc.x += insets.left; clientLoc.y += insets.top; BufferedImage clientPixels = robot.createScreenCapture(new Rectangle(clientLoc.x, clientLoc.y, clientLoc.x + 2, clientLoc.y + 2)); try { Thread.sleep(2000); } catch (Exception e) {} int pixelVal = clientPixels.getRGB(0, 0); clipTest.dispose(); if ((new Color(pixelVal)).equals(fillColor)) { System.out.println("Passed"); } else { throw new Error("Failed: incorrect color in pixel (0, 0)"); } } catch (Exception e) { System.out.println("Problems creating Robot"); } } } Other Java examples (source code examples)Here is a short list of links related to this Java InsetClipping.java source code file: |
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