--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/sun/awt/SunGraphicsCallback.java Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 1999, 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 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);
+ }
+
+ @SuppressWarnings("deprecation")
+ public final void runOneComponent(Component comp, Rectangle bounds,
+ Graphics g, Shape clip,
+ int weightFlags) {
+ if (comp == null || comp.getPeer() == null || !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;
+ }
+ }
+}