GUI/Gadget.cs
author moel.mich
Tue, 14 Sep 2010 19:23:11 +0000
changeset 185 edb59f3745e8
parent 181 9901dbb25f18
child 202 551243a66b32
permissions -rw-r--r--
Fixed an UnauthorizedAccessException when modifying the auto-startup registry entry.
     1 /*
     2   
     3   Version: MPL 1.1/GPL 2.0/LGPL 2.1
     4 
     5   The contents of this file are subject to the Mozilla Public License Version
     6   1.1 (the "License"); you may not use this file except in compliance with
     7   the License. You may obtain a copy of the License at
     8  
     9   http://www.mozilla.org/MPL/
    10 
    11   Software distributed under the License is distributed on an "AS IS" basis,
    12   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
    13   for the specific language governing rights and limitations under the License.
    14 
    15   The Original Code is the Open Hardware Monitor code.
    16 
    17   The Initial Developer of the Original Code is 
    18   Michael Möller <m.moeller@gmx.ch>.
    19   Portions created by the Initial Developer are Copyright (C) 2010
    20   the Initial Developer. All Rights Reserved.
    21 
    22   Contributor(s):
    23 
    24   Alternatively, the contents of this file may be used under the terms of
    25   either the GNU General Public License Version 2 or later (the "GPL"), or
    26   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
    27   in which case the provisions of the GPL or the LGPL are applicable instead
    28   of those above. If you wish to allow use of your version of this file only
    29   under the terms of either the GPL or the LGPL, and not to allow others to
    30   use your version of this file under the terms of the MPL, indicate your
    31   decision by deleting the provisions above and replace them with the notice
    32   and other provisions required by the GPL or the LGPL. If you do not delete
    33   the provisions above, a recipient may use your version of this file under
    34   the terms of any one of the MPL, the GPL or the LGPL.
    35  
    36 */
    37 
    38 using System;
    39 using System.Drawing;
    40 using System.Drawing.Drawing2D;
    41 using System.Drawing.Imaging;
    42 using System.Drawing.Text;
    43 using System.Windows.Forms;
    44 
    45 namespace OpenHardwareMonitor.GUI {
    46   public abstract class Gadget : IDisposable {
    47 
    48     private GadgetWindow window;
    49     private Bitmap buffer;
    50     private Graphics graphics;
    51 
    52     public Gadget() {
    53       this.window = new GadgetWindow();
    54       CreateBuffer();
    55     }
    56 
    57     public virtual void Dispose() {
    58       DisposeBuffer();
    59     }
    60 
    61     public Point Location {
    62       get {
    63         return window.Location;
    64       }
    65       set {
    66         window.Location = value;
    67       }
    68     }
    69 
    70     public event EventHandler LocationChanged {
    71       add {
    72         window.LocationChanged += value;
    73       }
    74       remove {
    75         window.LocationChanged -= value;
    76       }
    77     }
    78 
    79     public virtual Size Size {
    80       get {
    81         return window.Size; 
    82       }
    83       set {        
    84         this.window.Size = value;
    85       }
    86     }
    87 
    88     public event EventHandler SizeChanged {
    89       add {
    90         window.SizeChanged += value;
    91       }
    92       remove {
    93         window.SizeChanged -= value;
    94       }
    95     }
    96 
    97     public byte Opacity {
    98       get {
    99         return window.Opacity;
   100       }
   101       set {
   102         window.Opacity = value;
   103       }
   104     }
   105 
   106     public bool LockPositionAndSize {
   107       get {
   108         return window.LockPositionAndSize;
   109       }
   110       set {
   111         window.LockPositionAndSize = value;
   112       }
   113     }
   114 
   115     public bool AlwaysOnTop {
   116       get {
   117         return window.AlwaysOnTop;
   118       }
   119       set {
   120         window.AlwaysOnTop = value;
   121       }
   122     }
   123 
   124     public ContextMenu ContextMenu {
   125       get {
   126         return window.ContextMenu;
   127       }
   128       set {
   129         window.ContextMenu = value;
   130       }
   131     }
   132 
   133     public event HitTestEventHandler HitTest {
   134       add {
   135         window.HitTest += value;
   136       }
   137       remove {
   138         window.HitTest -= value;
   139       }
   140     } 
   141 
   142     private void CreateBuffer() {
   143       this.buffer = new Bitmap(window.Size.Width, window.Size.Height, 
   144         PixelFormat.Format32bppArgb);
   145       this.graphics = Graphics.FromImage(this.buffer);
   146       if (Environment.OSVersion.Version.Major > 5) {
   147         this.graphics.TextRenderingHint = TextRenderingHint.SystemDefault;
   148         this.graphics.SmoothingMode = SmoothingMode.HighQuality;
   149       }
   150     }
   151 
   152     private void DisposeBuffer() {
   153       if (buffer != null) {
   154         this.buffer.Dispose();
   155         this.buffer = null;
   156       }
   157       if (graphics != null) {
   158         this.graphics.Dispose();
   159         this.graphics = null;
   160       }
   161     }
   162 
   163     public bool Visible {
   164       get {
   165         return window.Visible;
   166       }
   167       set {
   168         if (value != window.Visible) {
   169           if (value)
   170             Redraw();
   171           window.Visible = value;
   172         }
   173       }
   174     }
   175 
   176     public void Redraw() {
   177       if (window.Size != buffer.Size) {
   178         DisposeBuffer();
   179         CreateBuffer();
   180       }
   181 
   182       OnPaint(new PaintEventArgs(graphics, 
   183         new Rectangle(Point.Empty, window.Size)));
   184       window.Update(buffer);
   185     }
   186 
   187     protected abstract void OnPaint(PaintEventArgs e);
   188   
   189   }
   190 }