1 /*
   2  * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package sun.awt.X11;
  26 
  27 import java.awt.Component;
  28 import java.awt.Rectangle;
  29 import java.awt.Insets;
  30 
  31 import java.awt.event.ComponentEvent;
  32 
  33 import sun.util.logging.PlatformLogger;
  34 
  35 import sun.awt.AWTAccessor;
  36 
  37 /**
  38  * This class implements window which serves as content window for decorated frames.
  39  * Its purpose to provide correct events dispatching for the complex
  40  * constructs such as decorated frames.
  41  *
  42  * It should always be located at (- left inset, - top inset) in the associated
  43  * decorated window.  So coordinates in it would be the same as java coordinates.
  44  */
  45 public final class XContentWindow extends XWindow {
  46     private static PlatformLogger insLog = PlatformLogger.getLogger("sun.awt.X11.insets.XContentWindow");
  47 
  48     static XContentWindow createContent(XDecoratedPeer parentFrame) {
  49         final WindowDimensions dims = parentFrame.getDimensions();
  50         Rectangle rec = dims.getBounds();
  51         // Fix for  - set the location of the content window to the (-left inset, -top inset)
  52         Insets ins = dims.getInsets();
  53         if (ins != null) {
  54             rec.x = -ins.left;
  55             rec.y = -ins.top;
  56         } else {
  57             rec.x = 0;
  58             rec.y = 0;
  59         }
  60         final XContentWindow cw = new XContentWindow(parentFrame, rec);
  61         cw.xSetVisible(true);
  62         return cw;
  63     }
  64 
  65     private final XDecoratedPeer parentFrame;
  66 
  67     // A list of expose events that come when the parentFrame is iconified
  68     private final java.util.List<SavedExposeEvent> iconifiedExposeEvents =
  69             new java.util.ArrayList<SavedExposeEvent>();
  70 
  71     private XContentWindow(XDecoratedPeer parentFrame, Rectangle bounds) {
  72         super((Component)parentFrame.getTarget(), parentFrame.getShell(), bounds);
  73         this.parentFrame = parentFrame;
  74     }
  75 
  76     void preInit(XCreateWindowParams params) {
  77         super.preInit(params);
  78         params.putIfNull(BIT_GRAVITY, Integer.valueOf(XConstants.NorthWestGravity));
  79         Long eventMask = (Long)params.get(EVENT_MASK);
  80         if (eventMask != null) {
  81             eventMask = eventMask & ~(XConstants.StructureNotifyMask);
  82             params.put(EVENT_MASK, eventMask);
  83         }
  84     }
  85 
  86     protected String getWMName() {
  87         return "Content window";
  88     }
  89     protected boolean isEventDisabled(XEvent e) {
  90         switch (e.get_type()) {
  91           // Override parentFrame to receive MouseEnter/Exit
  92           case XConstants.EnterNotify:
  93           case XConstants.LeaveNotify:
  94               return false;
  95           // We handle ConfigureNotify specifically in XDecoratedPeer
  96           case XConstants.ConfigureNotify:
  97               return true;
  98           // We don't want SHOWN/HIDDEN on content window since it will duplicate XDecoratedPeer
  99           case XConstants.MapNotify:
 100           case XConstants.UnmapNotify:
 101               return true;
 102           default:
 103               return super.isEventDisabled(e) || parentFrame.isEventDisabled(e);
 104         }
 105     }
 106 
 107     // Coordinates are that of the shell
 108     void setContentBounds(WindowDimensions dims) {
 109         XToolkit.awtLock();
 110         try {
 111             // Bounds of content window are of the same size as bounds of Java window and with
 112             // location as -(insets)
 113             Rectangle newBounds = dims.getBounds();
 114             Insets in = dims.getInsets();
 115             if (in != null) {
 116                 newBounds.setLocation(-in.left, -in.top);
 117             }
 118             if (insLog.isLoggable(PlatformLogger.FINE)) insLog.fine("Setting content bounds {0}, old bounds {1}",
 119                                                                     newBounds, getBounds());
 120             // Fix for 5023533:
 121             // Change in the size of the content window means, well, change of the size
 122             // Change in the location of the content window means change in insets
 123             boolean needHandleResize = !(newBounds.equals(getBounds()));
 124             reshape(newBounds);
 125             if (needHandleResize) {
 126                 insLog.fine("Sending RESIZED");
 127                 handleResize(newBounds);
 128             }
 129         } finally {
 130             XToolkit.awtUnlock();
 131         }
 132         validateSurface();
 133     }
 134 
 135     // NOTE: This method may be called by privileged threads.
 136     //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
 137     public void handleResize(Rectangle bounds) {
 138         AWTAccessor.getComponentAccessor().setSize((Component)target, bounds.width, bounds.height);
 139         postEvent(new ComponentEvent(target, ComponentEvent.COMPONENT_RESIZED));
 140     }
 141 
 142 
 143     public void handleExposeEvent(Component target, int x, int y, int w, int h) {
 144         // TODO: ?
 145         // get rid of 'istanceof' by subclassing:
 146         // XContentWindow -> XFrameContentWindow
 147 
 148         // Expose event(s) that result from deiconification
 149         // come before a deicinofication notification.
 150         // We reorder these events by saving all expose events
 151         // that come when the frame is iconified. Then we
 152         // actually handle saved expose events on deiconification.
 153 
 154         if (parentFrame instanceof XFramePeer &&
 155                 (((XFramePeer)parentFrame).getState() & java.awt.Frame.ICONIFIED) != 0) {
 156             // Save expose events if the frame is iconified
 157             // in order to handle them on deiconification.
 158             iconifiedExposeEvents.add(new SavedExposeEvent(target, x, y, w, h));
 159         } else {
 160             // Normal case: [it is not a frame or] the frame is not iconified.
 161             super.handleExposeEvent(target, x, y, w, h);
 162         }

















 163     }
 164 
 165     void purgeIconifiedExposeEvents() {
 166         for (SavedExposeEvent evt : iconifiedExposeEvents) {
 167             super.handleExposeEvent(evt.target, evt.x, evt.y, evt.w, evt.h);
 168         }
 169         iconifiedExposeEvents.clear();
 170     }
 171 
 172     private static class SavedExposeEvent {
 173         Component target;
 174         int x, y, w, h;
 175         SavedExposeEvent(Component target, int x, int y, int w, int h) {
 176             this.target = target;
 177             this.x = x;
 178             this.y = y;
 179             this.w = w;
 180             this.h = h;
 181         }
 182     }
 183 
 184     public String toString() {
 185         return getClass().getName() + "[" + getBounds() + "]";
 186     }
 187 }
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