mcs/class/System.Windows.Forms/System.Windows.Forms/Screen.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //
  25 //
  26
  27 using System;
  28 using System.Drawing;
  29
  30 namespace System.Windows.Forms {
  31         public class Screen {
  32                 #region Local Variables
  33                 private static Screen[] all_screens;
  34                 private bool            primary;
  35                 private Rectangle       bounds;
  36                 private Rectangle       workarea;
  37                 private string          name;
  38                 private int             bits_per_pixel;
  39                 #endregion      // Local Variables
  40
  41                 #region Constructors
  42                 static Screen ()
  43                 {
  44                         try {
  45                                 all_screens = XplatUI.AllScreens;
  46                         }
  47                         catch (Exception e) {
  48                                 Console.WriteLine ("{0} trying to get all screens: {1}", e.GetType (), e.Message);
  49                         }
  50
  51                         if (all_screens == null || all_screens.Length == 0) {
  52                                 // just use a default one
  53                                 all_screens = new[] { new Screen(true, "Mono MWF Primary Display",
  54                                         XplatUI.VirtualScreen, XplatUI.WorkingArea) };
  55                         }
  56                 }
  57
  58                 internal Screen() {
  59                         this.primary = true;
  60                         this.bounds = XplatUI.WorkingArea;
  61                 }
  62
  63                 internal Screen(bool primary, string name, Rectangle bounds, Rectangle workarea) {
  64                         this.primary = primary;
  65                         this.name = name;
  66                         this.bounds = bounds;
  67                         this.workarea = workarea;
  68                         this.bits_per_pixel = 32;
  69                 }
  70                 #endregion      // Constructors
  71
  72                 #region Public Static Properties
  73                 public static Screen[] AllScreens {
  74                         get {
  75                                 return all_screens;
  76                         }
  77                 }
  78
  79                 public static Screen PrimaryScreen {
  80                         get {
  81                                 return all_screens[0];
  82                         }
  83                 }
  84                 #endregion      // Public Static Properties
  85
  86                 #region Public Instance Properties
  87                 [MonoTODO ("Stub, always returns 32")]
  88                 public int BitsPerPixel {
  89                         get { return bits_per_pixel; }
  90                 }
  91
  92                 public Rectangle Bounds {
  93                         get {
  94                                 return this.bounds;
  95                         }
  96                 }
  97
  98                 public string DeviceName {
  99                         get {
 100                                 return this.name;
 101                         }
 102                 }
 103
 104                 public bool Primary {
 105                         get {
 106                                 return this.primary;
 107                         }
 108                 }
 109
 110                 public Rectangle WorkingArea {
 111                         get {
 112                                 return this.workarea;
 113                         }
 114                 }
 115                 #endregion      // Public Instance Properties
 116
 117                 #region Public Static Methods
 118                 public static Screen FromControl(Control control) {
 119                         var point = control.Parent != null ? control.Parent.PointToScreen(control.Location) : control.Location;
 120                         return Screen.FromPoint(point);
 121                 }
 122
 123                 public static Screen FromHandle(IntPtr hwnd) {
 124                         Control control;
 125
 126                         control = Control.FromHandle(hwnd);
 127                         if (control != null) {
 128                                 var point = control.Parent != null ? control.Parent.PointToScreen(control.Location) : control.Location;
 129                                 return Screen.FromPoint(point);
 130                         }
 131                         return Screen.PrimaryScreen;
 132                 }
 133
 134                 public static Screen FromPoint(Point point) {
 135                         for (int i = 0; i < all_screens.Length; i++) {
 136                                 if (all_screens[i].Bounds.Contains(point)) {
 137                                         return all_screens[i];
 138                                 }
 139                         }
 140                         return Screen.PrimaryScreen;
 141                 }
 142
 143                 public static Screen FromRectangle(Rectangle rect) {
 144                         Screen bestScrn = null;
 145                         int closest = Int32.MaxValue;
 146                         foreach (Screen scrn in Screen.AllScreens) {
 147                                 Rectangle rcBounds = scrn.Bounds;
 148                                 int distance = 0;
 149                                 if (rect.Left > rcBounds.Right)
 150                                         distance += rect.Left - rcBounds.Right;
 151                                 else if (rcBounds.Left > rect.Left)
 152                                         distance += rcBounds.Left - rect.Left;
 153                                 if (rcBounds.Left > rect.Right)
 154                                         distance += rcBounds.Left - rect.Right;
 155                                 else if (rect.Right > rcBounds.Right)
 156                                         distance += rect.Right - rcBounds.Right;
 157                                 if (rect.Top > rcBounds.Bottom)
 158                                         distance += rect.Top - rcBounds.Bottom;
 159                                 else if (rcBounds.Top > rect.Top)
 160                                         distance += rcBounds.Top - rect.Top;
 161                                 if (rcBounds.Top > rect.Bottom)
 162                                         distance += rcBounds.Top - rect.Bottom;
 163                                 else if (rect.Bottom > rcBounds.Bottom)
 164                                         distance += rect.Bottom - rcBounds.Bottom;
 165                                 if (distance < closest) {
 166                                         bestScrn = scrn;
 167                                         closest = distance;
 168                                 }
 169                         }
 170                         return bestScrn;
 171                 }
 172
 173                 public static Rectangle GetBounds(Control ctl) {
 174                         return Screen.FromControl(ctl).Bounds;
 175                 }
 176
 177                 public static Rectangle GetBounds(Point pt) {
 178                         return Screen.FromPoint(pt).Bounds;
 179                 }
 180
 181                 public static Rectangle GetBounds(Rectangle rect) {
 182                         return Screen.FromRectangle(rect).Bounds;
 183                 }
 184
 185                 public static Rectangle GetWorkingArea(Control ctl) {
 186                         return Screen.FromControl(ctl).WorkingArea;
 187                 }
 188
 189                 public static Rectangle GetWorkingArea(Point pt) {
 190                         return Screen.FromPoint(pt).WorkingArea;
 191                 }
 192
 193                 public static Rectangle GetWorkingArea(Rectangle rect) {
 194                         return Screen.FromRectangle(rect).WorkingArea;
 195                 }
 196                 #endregion      // Public Static Methods
 197
 198                 #region Public Instance Methods
 199                 public override bool Equals(object obj) {
 200                         if (obj is Screen) {
 201                                 Screen s = (Screen)obj;
 202
 203                                 if (name.Equals(s.name) && (primary == s.primary) && (bounds.Equals(s.Bounds)) && (workarea.Equals(s.workarea))) {
 204                                         return true;
 205                                 }
 206                         }
 207                         return false;
 208                 }
 209
 210                 public override int GetHashCode() {
 211                         return base.GetHashCode ();
 212                 }
 213
 214                 public override string ToString() {
 215                         return "Screen[Bounds={" + this.Bounds + "} WorkingArea={" + this.WorkingArea + "} Primary={" + this.Primary + "} DeviceName=" + this.DeviceName;
 216                 }
 217
 218
 219                 #endregion      // Public Instance Methods
 220         }
 221 }