mcs/class/Managed.Windows.Forms/System.Windows.Forms/Hwnd.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 // NOT COMPLETE
  28
  29 using System;
  30 using System.Collections;
  31 using System.Drawing;
  32 using System.Runtime.InteropServices;
  33
  34 namespace System.Windows.Forms {
  35         internal class Hwnd : IDisposable {
  36                 #region Local Variables
  37                 private static Hashtable        windows = new Hashtable(100, 0.5f);
  38                 private const int       menu_height = 14;                       // FIXME - Read this value from somewhere
  39                 private const int       caption_height = 0;                     // FIXME - Read this value from somewhere
  40                 private const int       tool_caption_height = 0;                // FIXME - Read this value from somewhere
  41
  42                 //private GCHandle      gc_handle;
  43                 private IntPtr          handle;
  44                 internal IntPtr         client_window;
  45                 internal IntPtr         whole_window;
  46                 internal IntPtr         menu_handle;
  47                 internal TitleStyle     title_style;
  48                 internal BorderStyle    border_style;
  49                 internal Border3DStyle  edge_style;
  50                 internal int            x;
  51                 internal int            y;
  52                 internal int            width;
  53                 internal int            height;
  54                 internal Hwnd           parent;
  55                 internal bool           visible;
  56                 internal Rectangle      invalid;
  57                 internal bool           expose_pending;
  58                 internal bool           nc_expose_pending;
  59                 internal Graphics       client_dc;
  60                 #endregion      // Local Variables
  61
  62                 #region Constructors and destructors
  63                 public Hwnd() {
  64                         //gc_handle = GCHandle.Alloc(this);
  65
  66                         x = 0;
  67                         y = 0;
  68                         width = 0;
  69                         height = 0;
  70                         visible = false;
  71                         menu_handle = IntPtr.Zero;
  72                         border_style = BorderStyle.None;
  73                         client_window = IntPtr.Zero;
  74                         whole_window = IntPtr.Zero;
  75                         handle = IntPtr.Zero;
  76                         parent = null;
  77                         invalid = Rectangle.Empty;
  78                         expose_pending = false;
  79                         nc_expose_pending = false;
  80                         edge_style = Border3DStyle.Raised;
  81                 }
  82
  83                 public void Dispose() {
  84                         //gc_handle.Free();
  85                 }
  86                 #endregion
  87
  88                 #region Static Methods
  89                 public void SetObjectWindow(Hwnd obj, IntPtr window) {
  90                         windows[window] = obj;
  91                 }
  92
  93                 public static Hwnd ObjectFromWindow(IntPtr window) {
  94                         return (Hwnd)windows[window];
  95                 }
  96
  97                 public static Hwnd ObjectFromHandle(IntPtr handle) {
  98                         //return (Hwnd)(((GCHandle)handle).Target);
  99                         return (Hwnd)windows[handle];
 100                 }
 101
 102                 public static IntPtr HandleFromObject(Hwnd obj) {
 103                         //return (IntPtr)obj.gc_handle;
 104                         return obj.handle;
 105                 }
 106
 107                 public static Hwnd GetObjectFromWindow(IntPtr window) {
 108                         return (Hwnd)windows[window];
 109                 }
 110
 111                 public static IntPtr GetHandleFromWindow(IntPtr window) {
 112                         Hwnd    hwnd;
 113
 114                         hwnd = (Hwnd)windows[window];
 115                         if (hwnd != null) {
 116                                 //return (IntPtr)hwnd.gc_handle;
 117                                 return hwnd.handle;
 118                         } else {
 119                                 return IntPtr.Zero;
 120                         }
 121                 }
 122
 123                 public static Rectangle GetWindowRectangle(BorderStyle border_style, IntPtr menu_handle, TitleStyle title_style, Rectangle client_rect) {
 124                         Rectangle       rect;
 125
 126                         rect = new Rectangle(client_rect.Location, client_rect.Size);
 127
 128                         if (menu_handle != IntPtr.Zero) {
 129                                 rect.Y -= menu_height;
 130                                 rect.Height += menu_height;
 131                         }
 132
 133                         if (border_style == BorderStyle.Fixed3D) {
 134                                 rect.X -= 2;
 135                                 rect.Y -= 2;
 136                                 rect.Width += 4;
 137                                 rect.Height += 4;
 138                         } else if (border_style == BorderStyle.FixedSingle) {
 139                                 rect.X -= 1;
 140                                 rect.Y -= 1;
 141                                 rect.Width += 2;
 142                                 rect.Height += 2;
 143                         }
 144
 145                         if (title_style == TitleStyle.Normal) {
 146                                 rect.Y -= caption_height;
 147                                 rect.Height += caption_height;
 148                         } else if (title_style == TitleStyle.Tool) {
 149                                 rect.Y -= tool_caption_height;
 150                                 rect.Height += tool_caption_height;
 151                         }
 152
 153                         return rect;
 154                 }
 155
 156                 public static Rectangle GetClientRectangle(BorderStyle border_style, IntPtr menu_handle, TitleStyle title_style, int width, int height) {
 157                         Rectangle rect;
 158
 159                         rect = new Rectangle(0, 0, width, height);
 160
 161                         if (menu_handle != IntPtr.Zero) {
 162                                 rect.Y += menu_height;
 163                                 rect.Height -= menu_height;
 164                         }
 165
 166                         if (border_style == BorderStyle.Fixed3D) {
 167                                 rect.X += 2;
 168                                 rect.Y += 2;
 169                                 rect.Width -= 4;
 170                                 rect.Height -= 4;
 171                         } else if (border_style == BorderStyle.FixedSingle) {
 172                                 rect.X += 1;
 173                                 rect.Y += 1;
 174                                 rect.Width -= 2;
 175                                 rect.Height -= 2;
 176                         }
 177
 178                         if (title_style == TitleStyle.Normal)  {
 179                                 rect.Y += caption_height;
 180                                 rect.Height -= caption_height;
 181                         } else if (title_style == TitleStyle.Normal)  {
 182                                 rect.Y += tool_caption_height;
 183                                 rect.Height -= tool_caption_height;
 184                         }
 185
 186                         return rect;
 187                 }
 188                 #endregion      // Static Methods
 189
 190                 #region Instance Properties
 191                 public BorderStyle BorderStyle {
 192                         get {
 193                                 return border_style;
 194                         }
 195
 196                         set {
 197                                 border_style = value;
 198                         }
 199                 }
 200
 201                 public Graphics ClientDC {
 202                         get {
 203                                 return client_dc;
 204                         }
 205
 206                         set {
 207                                 client_dc = value;
 208                         }
 209                 }
 210
 211                 public Rectangle ClientRect {
 212                         get {
 213                                 Rectangle rect;
 214
 215                                 rect = new Rectangle(0, 0, width, height);
 216
 217                                 if (menu_handle != IntPtr.Zero) {
 218                                         rect.Y += menu_height;
 219                                         rect.Height -= menu_height;
 220                                 }
 221
 222                                 if (border_style == BorderStyle.Fixed3D) {
 223                                         rect.X += 2;
 224                                         rect.Y += 2;
 225                                         rect.Width -= 4;
 226                                         rect.Height -= 4;
 227                                 } else if (border_style == BorderStyle.FixedSingle) {
 228                                         rect.X += 1;
 229                                         rect.Y += 1;
 230                                         rect.Width -= 2;
 231                                         rect.Height -= 2;
 232                                 }
 233
 234                                 if (this.title_style == TitleStyle.Normal)  {
 235                                         rect.Y += caption_height;
 236                                         rect.Height -= caption_height;
 237                                 } else if (this.title_style == TitleStyle.Normal)  {
 238                                         rect.Y += tool_caption_height;
 239                                         rect.Height -= tool_caption_height;
 240                                 }
 241
 242                                 return rect;
 243                         }
 244                 }
 245
 246                 public IntPtr ClientWindow {
 247                         get {
 248                                 return client_window;
 249                         }
 250
 251                         set {
 252                                 client_window = value;
 253                                 handle = value;
 254
 255                                 if (windows[client_window] == null) {
 256                                         windows[client_window] = this;
 257                                 }
 258                         }
 259                 }
 260
 261                 public Border3DStyle EdgeStyle {
 262                         get {
 263                                 return edge_style;
 264                         }
 265
 266                         set {
 267                                 edge_style = value;
 268                         }
 269                 }
 270
 271                 public bool ExposePending {
 272                         get {
 273                                 return expose_pending;
 274                         }
 275
 276                         set {
 277                                 expose_pending = value;
 278                         }
 279                 }
 280
 281                 public IntPtr Handle {
 282                         get {
 283                                 if (handle == IntPtr.Zero) {
 284                                         throw new ArgumentNullException("Handle", "Handle is not yet assigned, need a ClientWindow");
 285                                 }
 286                                 //return (IntPtr)gc_handle;
 287                                 return handle;
 288                         }
 289                 }
 290
 291                 public int Height {
 292                         get {
 293                                 return height;
 294                         }
 295
 296                         set {
 297                                 height = value;
 298                         }
 299                 }
 300
 301                 public IntPtr MenuHandle {
 302                         get {
 303                                 return menu_handle;
 304                         }
 305
 306                         set {
 307                                 menu_handle = value;
 308                         }
 309                 }
 310
 311                 public Rectangle Invalid {
 312                         get {
 313                                 return invalid;
 314                         }
 315
 316                         set {
 317                                 invalid = value;
 318                         }
 319                 }
 320
 321                 public bool NCExposePending {
 322                         get {
 323                                 return nc_expose_pending;
 324                         }
 325
 326                         set {
 327                                 nc_expose_pending = value;
 328                         }
 329                 }
 330
 331                 public Hwnd Parent {
 332                         get {
 333                                 return parent;
 334                         }
 335
 336                         set {
 337                                 parent = value;
 338                         }
 339                 }
 340
 341                 public TitleStyle TitleStyle {
 342                         get {
 343                                 return title_style;
 344                         }
 345
 346                         set {
 347                                 title_style = value;
 348                         }
 349                 }
 350
 351                 public IntPtr WholeWindow {
 352                         get {
 353                                 return whole_window;
 354                         }
 355
 356                         set {
 357                                 whole_window = value;
 358
 359                                 if (windows[whole_window] == null) {
 360                                         windows[whole_window] = this;
 361                                 }
 362                         }
 363                 }
 364
 365                 public int Width {
 366                         get {
 367                                 return width;
 368                         }
 369
 370                         set {
 371                                 width = value;
 372                         }
 373                 }
 374
 375                 public bool Visible {
 376                         get {
 377                                 return visible;
 378                         }
 379
 380                         set {
 381                                 visible = value;
 382                         }
 383                 }
 384
 385                 public int X {
 386                         get {
 387                                 return x;
 388                         }
 389
 390                         set {
 391                                 x = value;
 392                         }
 393                 }
 394
 395                 public int Y {
 396                         get {
 397                                 return y;
 398                         }
 399
 400                         set {
 401                                 y = value;
 402                         }
 403                 }
 404                 #endregion      // Instance properties
 405
 406                 #region Methods
 407                 public void AddInvalidArea(int x, int y, int width, int height) {
 408                         if (invalid == Rectangle.Empty) {
 409                                 invalid = new Rectangle (x, y, width, height);
 410                                 return;
 411                         }
 412                         invalid = Rectangle.Union (invalid, new Rectangle (x, y, width, height));
 413                 }
 414
 415                 public void AddInvalidArea(Rectangle rect) {
 416                         if (invalid == Rectangle.Empty) {
 417                                 invalid = rect;
 418                                 return;
 419                         }
 420                         invalid = Rectangle.Union (invalid, rect);
 421                 }
 422
 423                 public void ClearInvalidArea() {
 424                         invalid = Rectangle.Empty;
 425                         expose_pending = false;
 426                 }
 427                 #endregion      // Methods
 428         }
 429 }