1 /*
   2  * Copyright (c) 1996, 2017, 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 
  26 package sun.awt.windows;
  27 
  28 import java.awt.Color;
  29 import java.awt.Component;
  30 import java.awt.Container;
  31 import java.awt.Graphics;
  32 import java.awt.Insets;
  33 import java.awt.SystemColor;
  34 import java.awt.peer.PanelPeer;
  35 
  36 import sun.awt.SunGraphicsCallback;
  37 
  38 class WPanelPeer extends WCanvasPeer implements PanelPeer {
  39 
  40     // ComponentPeer overrides
  41 
  42     @Override
  43     public void paint(Graphics g) {
  44         super.paint(g);
  45         SunGraphicsCallback.PaintHeavyweightComponentsCallback.getInstance().
  46             runComponents(((Container)target).getComponents(), g,
  47                           SunGraphicsCallback.LIGHTWEIGHTS |
  48                           SunGraphicsCallback.HEAVYWEIGHTS);
  49     }
  50     @Override
  51     public void print(Graphics g) {
  52         super.print(g);
  53         SunGraphicsCallback.PrintHeavyweightComponentsCallback.getInstance().
  54             runComponents(((Container)target).getComponents(), g,
  55                           SunGraphicsCallback.LIGHTWEIGHTS |
  56                           SunGraphicsCallback.HEAVYWEIGHTS);
  57     }
  58 
  59     // ContainerPeer (via PanelPeer) implementation
  60 
  61     @Override
  62     public Insets getInsets() {
  63         return insets_;
  64     }
  65 
  66     // Toolkit & peer internals
  67 
  68     Insets insets_;
  69 
  70     static {
  71         initIDs();
  72     }
  73 
  74     /**
  75      * Initialize JNI field IDs
  76      */
  77     private static native void initIDs();
  78 
  79     WPanelPeer(Component target) {
  80         super(target);
  81     }
  82 
  83     @Override
  84     void initialize() {
  85         super.initialize();
  86         insets_ = new Insets(0,0,0,0);
  87 
  88         Color c = ((Component)target).getBackground();
  89         if (c == null) {
  90             c = SystemColor.window;
  91             ((Component)target).setBackground(c);
  92             setBackground(c);
  93         }
  94         c = ((Component)target).getForeground();
  95         if (c == null) {
  96             c = SystemColor.windowText;
  97             ((Component)target).setForeground(c);
  98             setForeground(c);
  99         }
 100     }
 101 
 102     /**
 103      * DEPRECATED:  Replaced by getInsets().
 104      */
 105     public Insets insets() {
 106         return getInsets();
 107     }
 108 }