git.sesse.net Git - vlc/blob - modules/video_output/directx/events.c

   1 /*****************************************************************************
   2  * events.c: Windows DirectX video output events handler
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: events.c,v 1.21 2003/07/29 21:46:44 gbazin Exp $
   6  *
   7  * Authors: Gildas Bazin <gbazin@netcourrier.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24
  25 /*****************************************************************************
  26  * Preamble: This file contains the functions related to the creation of
  27  *             a window and the handling of its messages (events).
  28  *****************************************************************************/
  29 #include <errno.h>                                                 /* ENOMEM */
  30 #include <stdlib.h>                                                /* free() */
  31 #include <string.h>                                            /* strerror() */
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc/intf.h>
  35 #include <vlc/input.h>
  36 #include <vlc/vout.h>
  37
  38 #include <windows.h>
  39 #include <windowsx.h>
  40 #include <shellapi.h>
  41
  42 #include <ddraw.h>
  43
  44 #include "vout.h"
  45
  46 /*****************************************************************************
  47  * Local prototypes.
  48  *****************************************************************************/
  49 static int  DirectXCreateWindow( vout_thread_t *p_vout );
  50 static void DirectXCloseWindow ( vout_thread_t *p_vout );
  51 static long FAR PASCAL DirectXEventProc ( HWND hwnd, UINT message,
  52                                           WPARAM wParam, LPARAM lParam );
  53
  54 /*****************************************************************************
  55  * DirectXEventThread: Create video window & handle its messages
  56  *****************************************************************************
  57  * This function creates a video window and then enters an infinite loop
  58  * that handles the messages sent to that window.
  59  * The main goal of this thread is to isolate the Win32 PeekMessage function
  60  * because this one can block for a long time.
  61  *****************************************************************************/
  62 void DirectXEventThread( event_thread_t *p_event )
  63 {
  64     MSG msg;
  65     POINT old_mouse_pos = {0,0};
  66     vlc_value_t val;
  67     int i_width, i_height, i_x, i_y;
  68
  69     /* Initialisation */
  70
  71     /* Create a window for the video */
  72     /* Creating a window under Windows also initializes the thread's event
  73      * message queue */
  74     if( DirectXCreateWindow( p_event->p_vout ) )
  75     {
  76         msg_Err( p_event, "out of memory" );
  77         p_event->b_dead = VLC_TRUE;
  78     }
  79
  80     /* signal the creation of the window */
  81     vlc_thread_ready( p_event );
  82
  83     /* Main loop */
  84     /* GetMessage will sleep if there's no message in the queue */
  85     while( !p_event->b_die
  86            && GetMessage( &msg, p_event->p_vout->p_sys->hwnd, 0, 0 ) )
  87     {
  88         /* Check if we are asked to exit */
  89         if( p_event->b_die )
  90             break;
  91
  92         switch( msg.message )
  93         {
  94
  95         case WM_NCMOUSEMOVE:
  96         case WM_MOUSEMOVE:
  97             vout_PlacePicture( p_event->p_vout,
  98                                p_event->p_vout->p_sys->i_window_width,
  99                                p_event->p_vout->p_sys->i_window_height,
 100                                &i_x, &i_y, &i_width, &i_height );
 101
 102             val.i_int = ( GET_X_LPARAM(msg.lParam) - i_x )
 103                          * p_event->p_vout->render.i_width / i_width;
 104             var_Set( p_event->p_vout, "mouse-x", val );
 105             val.i_int = ( GET_Y_LPARAM(msg.lParam) - i_y )
 106                          * p_event->p_vout->render.i_height / i_height;
 107             var_Set( p_event->p_vout, "mouse-y", val );
 108
 109             val.b_bool = VLC_TRUE;
 110             var_Set( p_event->p_vout, "mouse-moved", val );
 111
 112             if( (abs(GET_X_LPARAM(msg.lParam) - old_mouse_pos.x) > 2 ||
 113                 (abs(GET_Y_LPARAM(msg.lParam) - old_mouse_pos.y)) > 2 ) )
 114             {
 115                 GetCursorPos( &old_mouse_pos );
 116                 p_event->p_vout->p_sys->i_lastmoved = mdate();
 117
 118                 if( p_event->p_vout->p_sys->b_cursor_hidden )
 119                 {
 120                     p_event->p_vout->p_sys->b_cursor_hidden = 0;
 121                     ShowCursor( TRUE );
 122                 }
 123             }
 124             break;
 125
 126         case WM_VLC_HIDE_MOUSE:
 127             GetCursorPos( &old_mouse_pos );
 128             ShowCursor( FALSE );
 129             break;
 130
 131         case WM_LBUTTONDOWN:
 132             var_Get( p_event->p_vout, "mouse-button-down", &val );
 133             val.i_int |= 1;
 134             var_Set( p_event->p_vout, "mouse-button-down", val );
 135             break;
 136
 137         case WM_LBUTTONUP:
 138             var_Get( p_event->p_vout, "mouse-button-down", &val );
 139             val.i_int &= ~1;
 140             var_Set( p_event->p_vout, "mouse-button-down", val );
 141
 142             val.b_bool = VLC_TRUE;
 143             var_Set( p_event->p_vout, "mouse-clicked", val );
 144             break;
 145
 146         case WM_LBUTTONDBLCLK:
 147             p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 148             break;
 149
 150         case WM_MBUTTONDOWN:
 151             var_Get( p_event->p_vout, "mouse-button-down", &val );
 152             val.i_int |= 2;
 153             var_Set( p_event->p_vout, "mouse-button-down", val );
 154             break;
 155
 156         case WM_MBUTTONUP:
 157             var_Get( p_event->p_vout, "mouse-button-down", &val );
 158             val.i_int &= ~2;
 159             var_Set( p_event->p_vout, "mouse-button-down", val );
 160             break;
 161
 162         case WM_RBUTTONDOWN:
 163             var_Get( p_event->p_vout, "mouse-button-down", &val );
 164             val.i_int |= 4;
 165             var_Set( p_event->p_vout, "mouse-button-down", val );
 166             break;
 167
 168         case WM_RBUTTONUP:
 169             var_Get( p_event->p_vout, "mouse-button-down", &val );
 170             val.i_int &= ~4;
 171             var_Set( p_event->p_vout, "mouse-button-down", val );
 172             {
 173                 playlist_t *p_playlist =
 174                     vlc_object_find( p_event, VLC_OBJECT_PLAYLIST,
 175                                      FIND_ANYWHERE );
 176                 if( p_playlist != NULL )
 177                 {
 178                     vlc_value_t val;
 179                     val.b_bool = VLC_TRUE; /* make compiler happy */
 180                     var_Set( p_playlist, "intf-popupmenu", val );
 181                     vlc_object_release( p_playlist );
 182                 }
 183             }
 184             break;
 185
 186         case WM_KEYDOWN:
 187             /* the key events are first processed here. The next
 188              * message processed by this main message loop will be the
 189              * char translation of the key event */
 190             msg_Dbg( p_event, "WM_KEYDOWN" );
 191             switch( msg.wParam )
 192             {
 193             case VK_ESCAPE:
 194                 if( p_event->p_vout->b_fullscreen )
 195                 {
 196                     p_event->p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 197                 }
 198                 else
 199                 {
 200                     /* close video window */
 201                     PostMessage( msg.hwnd, WM_CLOSE, 0, 0 );
 202                 }
 203                 break;
 204
 205             case VK_MENU:
 206                 {
 207                     playlist_t *p_playlist =
 208                         vlc_object_find( p_event, VLC_OBJECT_PLAYLIST,
 209                                          FIND_ANYWHERE );
 210                     if( p_playlist != NULL )
 211                     {
 212                         vlc_value_t val;
 213                         var_Set( p_playlist, "intf-popupmenu", val );
 214                         vlc_object_release( p_playlist );
 215                     }
 216                 }
 217                 break;
 218
 219             case VK_LEFT:
 220                 /* input_Seek( p_event->p_vout, -5,
 221                    INPUT_SEEK_SECONDS | INPUT_SEEK_CUR ); */
 222                 val.psz_string = "LEFT";
 223                 var_Set( p_event->p_vout, "key-pressed", val );
 224                 break;
 225             case VK_RIGHT:
 226                 /* input_Seek( p_event->p_vout, 5,
 227                    INPUT_SEEK_SECONDS | INPUT_SEEK_CUR ); */
 228                 val.psz_string = "RIGHT";
 229                 var_Set( p_event->p_vout, "key-pressed", val );
 230                 break;
 231             case VK_UP:
 232                 /* input_Seek( p_event->p_vout, 60,
 233                    INPUT_SEEK_SECONDS | INPUT_SEEK_CUR ); */
 234                 val.psz_string = "UP";
 235                 var_Set( p_event->p_vout, "key-pressed", val );
 236                 break;
 237             case VK_DOWN:
 238                 /* input_Seek( p_event->p_vout, -60,
 239                    INPUT_SEEK_SECONDS | INPUT_SEEK_CUR ); */
 240                 val.psz_string = "DOWN";
 241                 var_Set( p_event->p_vout, "key-pressed", val );
 242                 break;
 243             case VK_RETURN:
 244                 val.psz_string = "ENTER";
 245                 var_Set( p_event->p_vout, "key-pressed", val );
 246                 break;
 247             case VK_HOME:
 248                 input_Seek( p_event->p_vout, 0,
 249                             INPUT_SEEK_BYTES | INPUT_SEEK_SET );
 250                 break;
 251             case VK_END:
 252                 input_Seek( p_event->p_vout, 0,
 253                             INPUT_SEEK_BYTES | INPUT_SEEK_END );
 254                 break;
 255             case VK_PRIOR:
 256                 input_Seek( p_event->p_vout, 10,
 257                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 258                 break;
 259             case VK_NEXT:
 260                 input_Seek( p_event->p_vout, -10,
 261                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 262                 break;
 263             case VK_SPACE:
 264                 input_SetStatus( p_event->p_vout, INPUT_STATUS_PAUSE );
 265                 break;
 266             }
 267             TranslateMessage(&msg);
 268             break;
 269
 270         case WM_CHAR:
 271             switch( msg.wParam )
 272             {
 273             case 'q':
 274             case 'Q':
 275                 /* exit application */
 276                 p_event->p_vlc->b_die = VLC_TRUE;
 277                 break;
 278
 279             case 'f':                            /* switch to fullscreen */
 280             case 'F':
 281                 p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 282                 break;
 283
 284             default:
 285                 break;
 286             }
 287
 288         default:
 289             /* Messages we don't handle directly are dispatched to the
 290              * window procedure */
 291             TranslateMessage(&msg);
 292             DispatchMessage(&msg);
 293             break;
 294
 295         } /* End Switch */
 296
 297     } /* End Main loop */
 298
 299     if( msg.message == WM_QUIT )
 300     {
 301         msg_Warn( p_event, "WM_QUIT... should not happen!!" );
 302         p_event->p_vout->p_sys->hwnd = NULL; /* Window already destroyed */
 303     }
 304
 305     msg_Dbg( p_event, "DirectXEventThread terminating" );
 306
 307     /* clear the changes formerly signaled */
 308     p_event->p_vout->p_sys->i_changes = 0;
 309
 310     DirectXCloseWindow( p_event->p_vout );
 311 }
 312
 313
 314 /* following functions are local */
 315
 316 /*****************************************************************************
 317  * DirectXCreateWindow: create a window for the video.
 318  *****************************************************************************
 319  * Before creating a direct draw surface, we need to create a window in which
 320  * the video will be displayed. This window will also allow us to capture the
 321  * events.
 322  *****************************************************************************/
 323 static int DirectXCreateWindow( vout_thread_t *p_vout )
 324 {
 325     HINSTANCE  hInstance;
 326     COLORREF   colorkey;
 327     HDC        hdc;
 328     HMENU      hMenu;
 329     RECT       rect_window;
 330
 331     vlc_value_t val;
 332
 333     msg_Dbg( p_vout, "DirectXCreateWindow" );
 334
 335     /* Get this module's instance */
 336     hInstance = GetModuleHandle(NULL);
 337
 338     /* Create a BRUSH that will be used by Windows to paint the window
 339      * background.
 340      * This window background is important for us as it will be used by the
 341      * graphics card to display the overlay.
 342      * This is why we carefully choose the color for this background, the goal
 343      * being to choose a color which isn't complete black but nearly. We
 344      * obviously don't want to use black as a colorkey for the overlay because
 345      * black is one of the most used color and thus would give us undesirable
 346      * effects */
 347     /* the first step is to find the colorkey we want to use. The difficulty
 348      * comes from the potential dithering (depends on the display depth)
 349      * because we need to know the real RGB value of the chosen colorkey */
 350     hdc = GetDC( NULL );
 351     for( colorkey = 0x0a; colorkey < 0xff /* all shades of red */; colorkey++ )
 352     {
 353         if( colorkey == GetNearestColor( hdc, colorkey ) )
 354         {
 355             break;
 356         }
 357     }
 358     msg_Dbg( p_vout, "background color: %i", colorkey );
 359
 360     /* Create the actual brush */
 361     p_vout->p_sys->hbrush = CreateSolidBrush(colorkey);
 362     p_vout->p_sys->i_rgb_colorkey = (int)colorkey;
 363
 364     /* Get the current size of the display and its colour depth */
 365     p_vout->p_sys->rect_display.right = GetDeviceCaps( hdc, HORZRES );
 366     p_vout->p_sys->rect_display.bottom = GetDeviceCaps( hdc, VERTRES );
 367     p_vout->p_sys->i_display_depth = GetDeviceCaps( hdc, BITSPIXEL );
 368     msg_Dbg( p_vout, "screen dimensions %ix%i colour depth %i",
 369                       p_vout->p_sys->rect_display.right,
 370                       p_vout->p_sys->rect_display.bottom,
 371                       p_vout->p_sys->i_display_depth );
 372
 373     ReleaseDC( NULL, hdc );
 374
 375     /* If an external window was specified, we'll draw in it. */
 376     var_Get( p_vout->p_vlc, "drawable", &val );
 377     p_vout->p_sys->hparent = p_vout->p_sys->hwnd =
 378              val.i_int ?  (void*)(ptrdiff_t) val.i_int : NULL;
 379
 380     if( p_vout->p_sys->hparent )
 381     {
 382         msg_Dbg( p_vout, "using external window %p\n", p_vout->p_sys->hwnd );
 383
 384         /* Set stuff in the window that we can not put directly in
 385          * a class (see below). */
 386         SetClassLong( p_vout->p_sys->hwnd,
 387                       GCL_STYLE, CS_DBLCLKS );
 388         SetClassLong( p_vout->p_sys->hwnd,
 389                       GCL_HBRBACKGROUND, (LONG)p_vout->p_sys->hbrush );
 390         SetClassLong( p_vout->p_sys->hwnd,
 391                       GCL_HCURSOR, (LONG)LoadCursor(NULL, IDC_ARROW) );
 392         /* Store a p_vout pointer into the window local storage (for later
 393          * use in DirectXEventProc). */
 394         SetWindowLong( p_vout->p_sys->hwnd, GWL_USERDATA, (LONG)p_vout );
 395
 396         p_vout->p_sys->pf_wndproc =
 397                (WNDPROC)SetWindowLong( p_vout->p_sys->hwnd,
 398                                        GWL_WNDPROC, (LONG)DirectXEventProc );
 399
 400         /* Blam! Erase everything that might have been there. */
 401         RedrawWindow( p_vout->p_sys->hwnd, NULL, NULL,
 402                       RDW_INVALIDATE | RDW_ERASE );
 403     }
 404     else
 405     {
 406         WNDCLASSEX wc;                            /* window class components */
 407         HICON      vlc_icon = NULL;
 408         char       vlc_path[MAX_PATH+1];
 409
 410         /* Get the Icon from the main app */
 411         vlc_icon = NULL;
 412         if( GetModuleFileName( NULL, vlc_path, MAX_PATH ) )
 413         {
 414             vlc_icon = ExtractIcon( hInstance, vlc_path, 0 );
 415         }
 416
 417         /* Fill in the window class structure */
 418         wc.cbSize        = sizeof(WNDCLASSEX);
 419         wc.style         = CS_DBLCLKS;                   /* style: dbl click */
 420         wc.lpfnWndProc   = (WNDPROC)DirectXEventProc;       /* event handler */
 421         wc.cbClsExtra    = 0;                         /* no extra class data */
 422         wc.cbWndExtra    = 0;                        /* no extra window data */
 423         wc.hInstance     = hInstance;                            /* instance */
 424         wc.hIcon         = vlc_icon;                /* load the vlc big icon */
 425         wc.hCursor       = LoadCursor(NULL, IDC_ARROW);    /* default cursor */
 426         wc.hbrBackground = p_vout->p_sys->hbrush;        /* background color */
 427         wc.lpszMenuName  = NULL;                                  /* no menu */
 428         wc.lpszClassName = "VLC DirectX";             /* use a special class */
 429         wc.hIconSm       = vlc_icon;              /* load the vlc small icon */
 430
 431         /* Register the window class */
 432         if( !RegisterClassEx(&wc) )
 433         {
 434             WNDCLASS wndclass;
 435
 436             /* Free window background brush */
 437             if( p_vout->p_sys->hbrush )
 438             {
 439                 DeleteObject( p_vout->p_sys->hbrush );
 440                 p_vout->p_sys->hbrush = NULL;
 441             }
 442
 443             if( vlc_icon )
 444             {
 445                 DestroyIcon( vlc_icon );
 446             }
 447
 448             /* Check why it failed. If it's because one already exists
 449              * then fine, otherwise return with an error. */
 450             if( !GetClassInfo( hInstance, "VLC DirectX", &wndclass ) )
 451             {
 452                 msg_Err( p_vout, "DirectXCreateWindow RegisterClass FAILED" );
 453                 return VLC_EGENERIC;
 454             }
 455         }
 456
 457         /* When you create a window you give the dimensions you wish it to
 458          * have. Unfortunatly these dimensions will include the borders and
 459          * titlebar. We use the following function to find out the size of
 460          * the window corresponding to the useable surface we want */
 461         rect_window.top    = 10;
 462         rect_window.left   = 10;
 463         rect_window.right  = rect_window.left + p_vout->p_sys->i_window_width;
 464         rect_window.bottom = rect_window.top + p_vout->p_sys->i_window_height;
 465         AdjustWindowRect( &rect_window, WS_OVERLAPPEDWINDOW|WS_SIZEBOX, 0 );
 466
 467         /* Create the window */
 468         p_vout->p_sys->hwnd =
 469             CreateWindow( "VLC DirectX",             /* name of window class */
 470                     VOUT_TITLE " (DirectX Output)", /* window title bar text */
 471                     WS_OVERLAPPEDWINDOW | WS_SIZEBOX,        /* window style */
 472                     CW_USEDEFAULT,                   /* default X coordinate */
 473                     0,                               /* default Y coordinate */
 474                     rect_window.right - rect_window.left,    /* window width */
 475                     rect_window.bottom - rect_window.top,   /* window height */
 476                     NULL,                                /* no parent window */
 477                     NULL,                          /* no menu in this window */
 478                     hInstance,            /* handle of this program instance */
 479                     (LPVOID)p_vout );            /* send p_vout to WM_CREATE */
 480
 481         if( !p_vout->p_sys->hwnd )
 482         {
 483             msg_Warn( p_vout, "DirectXCreateWindow create window FAILED" );
 484             return VLC_EGENERIC;
 485         }
 486     }
 487
 488     /* Append a "Always On Top" entry in the system menu */
 489     hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 490     AppendMenu( hMenu, MF_SEPARATOR, 0, "" );
 491     AppendMenu( hMenu, MF_STRING | MF_UNCHECKED,
 492                        IDM_TOGGLE_ON_TOP, "Always on &Top" );
 493
 494     /* Now display the window */
 495     ShowWindow( p_vout->p_sys->hwnd, SW_SHOW );
 496
 497     return VLC_SUCCESS;
 498 }
 499
 500 /*****************************************************************************
 501  * DirectXCloseWindow: close the window created by DirectXCreateWindow
 502  *****************************************************************************
 503  * This function returns all resources allocated by DirectXCreateWindow.
 504  *****************************************************************************/
 505 static void DirectXCloseWindow( vout_thread_t *p_vout )
 506 {
 507     msg_Dbg( p_vout, "DirectXCloseWindow" );
 508
 509     if( p_vout->p_sys->hwnd && !p_vout->p_sys->hparent )
 510     {
 511         DestroyWindow( p_vout->p_sys->hwnd );
 512     }
 513
 514     p_vout->p_sys->hwnd = NULL;
 515
 516     /* We don't unregister the Window Class because it could lead to race
 517      * conditions and it will be done anyway by the system when the app will
 518      * exit */
 519 }
 520
 521 /*****************************************************************************
 522  * DirectXUpdateRects: update clipping rectangles
 523  *****************************************************************************
 524  * This function is called when the window position or size are changed, and
 525  * its job is to update the source and destination RECTs used to display the
 526  * picture.
 527  *****************************************************************************/
 528 void DirectXUpdateRects( vout_thread_t *p_vout, vlc_bool_t b_force )
 529 {
 530 #define rect_src p_vout->p_sys->rect_src
 531 #define rect_src_clipped p_vout->p_sys->rect_src_clipped
 532 #define rect_dest p_vout->p_sys->rect_dest
 533 #define rect_dest_clipped p_vout->p_sys->rect_dest_clipped
 534
 535     int i_width, i_height, i_x, i_y;
 536
 537     RECT  rect;
 538     POINT point;
 539
 540     /* Retrieve the window size */
 541     GetClientRect( p_vout->p_sys->hwnd, &rect );
 542
 543     /* Retrieve the window position */
 544     point.x = point.y = 0;
 545     ClientToScreen( p_vout->p_sys->hwnd, &point );
 546
 547     /* If nothing changed, we can return */
 548     if( !b_force
 549          && p_vout->p_sys->i_window_width == rect.right
 550          && p_vout->p_sys->i_window_height == rect.bottom
 551          && p_vout->p_sys->i_window_x == point.x
 552          && p_vout->p_sys->i_window_y == point.y )
 553     {
 554         return;
 555     }
 556
 557     /* Update the window position and size */
 558     p_vout->p_sys->i_window_x = point.x;
 559     p_vout->p_sys->i_window_y = point.y;
 560     p_vout->p_sys->i_window_width = rect.right;
 561     p_vout->p_sys->i_window_height = rect.bottom;
 562
 563     vout_PlacePicture( p_vout, rect.right, rect.bottom,
 564                        &i_x, &i_y, &i_width, &i_height );
 565
 566     /* Destination image position and dimensions */
 567     rect_dest.left = point.x + i_x;
 568     rect_dest.right = rect_dest.left + i_width;
 569     rect_dest.top = point.y + i_y;
 570     rect_dest.bottom = rect_dest.top + i_height;
 571
 572
 573     /* UpdateOverlay directdraw function doesn't automatically clip to the
 574      * display size so we need to do it otherwise it will fail */
 575
 576     /* Clip the destination window */
 577     IntersectRect( &rect_dest_clipped,
 578                    &rect_dest,
 579                    &p_vout->p_sys->rect_display );
 580
 581 #if 0
 582     msg_Dbg( p_vout, "DirectXUpdateRects image_dst_clipped coords:"
 583                      " %i,%i,%i,%i",
 584                      rect_dest_clipped.left, rect_dest_clipped.top,
 585                      rect_dest_clipped.right, rect_dest_clipped.bottom );
 586 #endif
 587
 588     /* the 2 following lines are to fix a bug when clicking on the desktop */
 589     if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
 590         (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
 591     {
 592         SetRectEmpty( &rect_src_clipped );
 593         return;
 594     }
 595
 596     /* src image dimensions */
 597     rect_src.left = 0;
 598     rect_src.top = 0;
 599     rect_src.right = p_vout->render.i_width;
 600     rect_src.bottom = p_vout->render.i_height;
 601
 602     /* Clip the source image */
 603     rect_src_clipped.left = (rect_dest_clipped.left - rect_dest.left) *
 604       p_vout->render.i_width / (rect_dest.right - rect_dest.left);
 605     rect_src_clipped.right = p_vout->render.i_width -
 606       (rect_dest.right - rect_dest_clipped.right) * p_vout->render.i_width /
 607       (rect_dest.right - rect_dest.left);
 608     rect_src_clipped.top = (rect_dest_clipped.top - rect_dest.top) *
 609       p_vout->render.i_height / (rect_dest.bottom - rect_dest.top);
 610     rect_src_clipped.bottom = p_vout->render.i_height -
 611       (rect_dest.bottom - rect_dest_clipped.bottom) * p_vout->render.i_height /
 612       (rect_dest.bottom - rect_dest.top);
 613
 614 #if 0
 615     msg_Dbg( p_vout, "DirectXUpdateRects image_src_clipped"
 616                      " coords: %i,%i,%i,%i",
 617                      rect_src_clipped.left, rect_src_clipped.top,
 618                      rect_src_clipped.right, rect_src_clipped.bottom );
 619 #endif
 620
 621     /* Signal the size change */
 622     if( !p_vout->p_sys->p_event->b_die )
 623     {
 624         if( p_vout->p_sys->b_using_overlay )
 625         {
 626             DirectXUpdateOverlay( p_vout );
 627         }
 628         else
 629         {
 630             p_vout->p_sys->i_changes |= VOUT_SIZE_CHANGE;
 631         }
 632     }
 633
 634 #undef rect_src
 635 #undef rect_src_clipped
 636 #undef rect_dest
 637 #undef rect_dest_clipped
 638 }
 639
 640 /*****************************************************************************
 641  * DirectXEventProc: This is the window event processing function.
 642  *****************************************************************************
 643  * On Windows, when you create a window you have to attach an event processing
 644  * function to it. The aim of this function is to manage "Queued Messages" and
 645  * "Nonqueued Messages".
 646  * Queued Messages are those picked up and retransmitted by vout_Manage
 647  * (using the GetMessage and DispatchMessage functions).
 648  * Nonqueued Messages are those that Windows will send directly to this
 649  * procedure (like WM_DESTROY, WM_WINDOWPOSCHANGED...)
 650  *****************************************************************************/
 651 static long FAR PASCAL DirectXEventProc( HWND hwnd, UINT message,
 652                                          WPARAM wParam, LPARAM lParam )
 653 {
 654     vout_thread_t *p_vout;
 655
 656     if( message == WM_CREATE )
 657     {
 658         /* Store p_vout for future use */
 659         p_vout = (vout_thread_t *)((CREATESTRUCT *)lParam)->lpCreateParams;
 660         SetWindowLong( hwnd, GWL_USERDATA, (LONG)p_vout );
 661     }
 662     else
 663     {
 664         p_vout = (vout_thread_t *)GetWindowLong( hwnd, GWL_USERDATA );
 665     }
 666
 667     switch( message )
 668     {
 669
 670     case WM_WINDOWPOSCHANGED:
 671         DirectXUpdateRects( p_vout, VLC_TRUE );
 672         return 0;
 673
 674     /* the user wants to close the window */
 675     case WM_CLOSE:
 676     {
 677         playlist_t * p_playlist =
 678             (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 679                                            FIND_ANYWHERE );
 680         if( p_playlist == NULL )
 681         {
 682             return 0;
 683         }
 684
 685         playlist_Stop( p_playlist );
 686         vlc_object_release( p_playlist );
 687         return 0;
 688     }
 689
 690     /* the window has been closed so shut down everything now */
 691     case WM_DESTROY:
 692         msg_Dbg( p_vout, "WinProc WM_DESTROY" );
 693         /* just destroy the window */
 694         PostQuitMessage( 0 );
 695         return 0;
 696
 697     case WM_SYSCOMMAND:
 698         switch (wParam)
 699         {
 700             case SC_SCREENSAVE:                     /* catch the screensaver */
 701             case SC_MONITORPOWER:              /* catch the monitor turn-off */
 702                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND" );
 703                 return 0;                  /* this stops them from happening */
 704             case IDM_TOGGLE_ON_TOP:            /* toggle the "on top" status */
 705             {
 706                 vlc_value_t val;
 707                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND: IDM_TOGGLE_ON_TOP");
 708
 709                 /* Get the current value... */
 710                 if( var_Get( p_vout, "directx-on-top", &val ) < 0 )
 711                     return 0;
 712                 /* ...and change it */
 713                 val.b_bool = !val.b_bool;
 714                 var_Set( p_vout, "directx-on-top", val );
 715                 return 0;
 716                 break;
 717             }
 718         }
 719         break;
 720
 721     case WM_ERASEBKGND:
 722         if( !p_vout->p_sys->b_using_overlay )
 723         {
 724             /* We want to eliminate unnecessary background redraws which create
 725              * an annoying flickering */
 726             int i_width, i_height, i_x, i_y;
 727             RECT rect_temp;
 728             GetClipBox( (HDC)wParam, &rect_temp );
 729 #if 0
 730             msg_Dbg( p_vout, "WinProc WM_ERASEBKGND %i,%i,%i,%i",
 731                           rect_temp.left, rect_temp.top,
 732                           rect_temp.right, rect_temp.bottom );
 733 #endif
 734             vout_PlacePicture( p_vout, p_vout->p_sys->i_window_width,
 735                                p_vout->p_sys->i_window_height,
 736                                &i_x, &i_y, &i_width, &i_height );
 737             ExcludeClipRect( (HDC)wParam, i_x, i_y,
 738                              i_x + i_width, i_y + i_height );
 739         }
 740         break;
 741
 742     default:
 743         //msg_Dbg( p_vout, "WinProc WM Default %i", message );
 744         break;
 745     }
 746
 747     return DefWindowProc(hwnd, message, wParam, lParam);
 748 }