1 /*
   2  * Copyright (c) 1996, 2016, 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.windows;
  26 
  27 import java.awt.*;
  28 import java.awt.peer.*;
  29 
  30 import sun.awt.SunGraphicsCallback;
  31 
  32 class WPanelPeer extends WCanvasPeer implements PanelPeer {
  33 
  34     // Default background.  Gets set on target if
  35     // target has none explicitly specified.
  36     static final Color defaultBackground = SystemColor.control;
  37 
  38     // Default foreground.  Gets set on target if
  39     // target has none explicitly specified.
  40     static final Color defaultForeground = SystemColor.windowText;
  41 
  42     // ComponentPeer overrides
  43 
  44     @Override
  45     public void paint(Graphics g) {
  46         super.paint(g);
  47         SunGraphicsCallback.PaintHeavyweightComponentsCallback.getInstance().
  48             runComponents(((Container)target).getComponents(), g,
  49                           SunGraphicsCallback.LIGHTWEIGHTS |
  50                           SunGraphicsCallback.HEAVYWEIGHTS);
  51     }
  52     @Override
  53     public void print(Graphics g) {
  54         super.print(g);
  55         SunGraphicsCallback.PrintHeavyweightComponentsCallback.getInstance().
  56             runComponents(((Container)target).getComponents(), g,
  57                           SunGraphicsCallback.LIGHTWEIGHTS |
  58                           SunGraphicsCallback.HEAVYWEIGHTS);
  59     }
  60 
  61     // ContainerPeer (via PanelPeer) implementation
  62 
  63     @Override
  64     public Insets getInsets() {
  65         return insets_;
  66     }
  67 
  68     // Toolkit & peer internals
  69 
  70     Insets insets_;
  71 
  72     static {
  73         initIDs();
  74     }
  75 
  76     /**
  77      * Initialize JNI field IDs
  78      */
  79     private static native void initIDs();
  80 
  81     WPanelPeer(Component target) {
  82         super(target);
  83     }
  84 
  85     @Override
  86     void initialize() {
  87         super.initialize();
  88         insets_ = new Insets(0,0,0,0);
  89 
  90         if (!((Component) target).isBackgroundSet()) {
  91             ((Component) target).setBackground(defaultBackground);
  92             setBackground(defaultBackground);
  93         }
  94         if (!((Component) target).isForegroundSet()) {
  95             ((Component) target).setForeground(defaultForeground);
  96             setForeground(defaultForeground);
  97         }
  98 
  99     }
 100 
 101     /**
 102      * DEPRECATED:  Replaced by getInsets().
 103      */
 104     public Insets insets() {
 105         return getInsets();
 106     }
 107 }