| /* |
| * Copyright (c) 1999, 2015, 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 sun.awt; |
| |
| import java.awt.*; |
| |
| import sun.util.logging.PlatformLogger; |
| |
| public abstract class SunGraphicsCallback { |
| public static final int HEAVYWEIGHTS = 0x1; |
| public static final int LIGHTWEIGHTS = 0x2; |
| public static final int TWO_PASSES = 0x4; |
| |
| private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.SunGraphicsCallback"); |
| |
| public abstract void run(Component comp, Graphics cg); |
| |
| protected void constrainGraphics(Graphics g, Rectangle bounds) { |
| if (g instanceof ConstrainableGraphics) { |
| ((ConstrainableGraphics)g).constrain(bounds.x, bounds.y, bounds.width, bounds.height); |
| } else { |
| g.translate(bounds.x, bounds.y); |
| } |
| g.clipRect(0, 0, bounds.width, bounds.height); |
| } |
| |
| public final void runOneComponent(Component comp, Rectangle bounds, |
| Graphics g, Shape clip, |
| int weightFlags) { |
| if (comp == null || !comp.isDisplayable() || !comp.isVisible()) { |
| return; |
| } |
| boolean lightweight = comp.isLightweight(); |
| if ((lightweight && (weightFlags & LIGHTWEIGHTS) == 0) || |
| (!lightweight && (weightFlags & HEAVYWEIGHTS) == 0)) { |
| return; |
| } |
| |
| if (bounds == null) { |
| bounds = comp.getBounds(); |
| } |
| |
| if (clip == null || clip.intersects(bounds)) { |
| Graphics cg = g.create(); |
| try { |
| constrainGraphics(cg, bounds); |
| cg.setFont(comp.getFont()); |
| cg.setColor(comp.getForeground()); |
| if (cg instanceof Graphics2D) { |
| ((Graphics2D)cg).setBackground(comp.getBackground()); |
| } else if (cg instanceof Graphics2Delegate) { |
| ((Graphics2Delegate)cg).setBackground( |
| comp.getBackground()); |
| } |
| run(comp, cg); |
| } finally { |
| cg.dispose(); |
| } |
| } |
| } |
| |
| public final void runComponents(Component[] comps, Graphics g, |
| int weightFlags) { |
| int ncomponents = comps.length; |
| Shape clip = g.getClip(); |
| |
| if (log.isLoggable(PlatformLogger.Level.FINER) && (clip != null)) { |
| Rectangle newrect = clip.getBounds(); |
| log.finer("x = " + newrect.x + ", y = " + newrect.y + |
| ", width = " + newrect.width + |
| ", height = " + newrect.height); |
| } |
| |
| // A seriously sad hack-- |
| // Lightweight components always paint behind peered components, |
| // even if they are at the top of the Z order. We emulate this |
| // behavior by making two printing passes: the first for lightweights; |
| // the second for heavyweights. |
| // |
| // ToDo(dpm): Either build a list of heavyweights during the |
| // lightweight pass, or redesign the components array to keep |
| // lightweights and heavyweights separate. |
| if ((weightFlags & TWO_PASSES) != 0) { |
| for (int i = ncomponents - 1; i >= 0; i--) { |
| runOneComponent(comps[i], null, g, clip, LIGHTWEIGHTS); |
| } |
| for (int i = ncomponents - 1; i >= 0; i--) { |
| runOneComponent(comps[i], null, g, clip, HEAVYWEIGHTS); |
| } |
| } else { |
| for (int i = ncomponents - 1; i >= 0; i--) { |
| runOneComponent(comps[i], null, g, clip, weightFlags); |
| } |
| } |
| } |
| |
| public static final class PaintHeavyweightComponentsCallback |
| extends SunGraphicsCallback |
| { |
| private static PaintHeavyweightComponentsCallback instance = |
| new PaintHeavyweightComponentsCallback(); |
| |
| private PaintHeavyweightComponentsCallback() {} |
| public void run(Component comp, Graphics cg) { |
| if (!comp.isLightweight()) { |
| comp.paintAll(cg); |
| } else if (comp instanceof Container) { |
| runComponents(((Container)comp).getComponents(), cg, |
| LIGHTWEIGHTS | HEAVYWEIGHTS); |
| } |
| } |
| public static PaintHeavyweightComponentsCallback getInstance() { |
| return instance; |
| } |
| } |
| public static final class PrintHeavyweightComponentsCallback |
| extends SunGraphicsCallback |
| { |
| private static PrintHeavyweightComponentsCallback instance = |
| new PrintHeavyweightComponentsCallback(); |
| |
| private PrintHeavyweightComponentsCallback() {} |
| public void run(Component comp, Graphics cg) { |
| if (!comp.isLightweight()) { |
| comp.printAll(cg); |
| } else if (comp instanceof Container) { |
| runComponents(((Container)comp).getComponents(), cg, |
| LIGHTWEIGHTS | HEAVYWEIGHTS); |
| } |
| } |
| public static PrintHeavyweightComponentsCallback getInstance() { |
| return instance; |
| } |
| } |
| } |