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 1.12 2003/03/04 22:48:55 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 "netutils.h"
  39
  40 #include <windows.h>
  41 #include <windowsx.h>
  42 #include <shellapi.h>
  43
  44 #include <ddraw.h>
  45
  46 #include "vout.h"
  47
  48 /*****************************************************************************
  49  * Local prototypes.
  50  *****************************************************************************/
  51 static int  DirectXCreateWindow( vout_thread_t *p_vout );
  52 static void DirectXCloseWindow ( vout_thread_t *p_vout );
  53 static long FAR PASCAL DirectXEventProc ( HWND hwnd, UINT message,
  54                                           WPARAM wParam, LPARAM lParam );
  55
  56 /*****************************************************************************
  57  * DirectXEventThread: Create video window & handle its messages
  58  *****************************************************************************
  59  * This function creates a video window and then enters an infinite loop
  60  * that handles the messages sent to that window.
  61  * The main goal of this thread is to isolate the Win32 PeekMessage function
  62  * because this one can block for a long time.
  63  *****************************************************************************/
  64 void DirectXEventThread( event_thread_t *p_event )
  65 {
  66     MSG msg;
  67     POINT old_mouse_pos;
  68     vlc_value_t val;
  69     int i_width, i_height, i_x, i_y;
  70
  71     /* Initialisation */
  72
  73     /* Create a window for the video */
  74     /* Creating a window under Windows also initializes the thread's event
  75      * message queue */
  76     if( DirectXCreateWindow( p_event->p_vout ) )
  77     {
  78         msg_Err( p_event, "out of memory" );
  79         p_event->b_dead = VLC_TRUE;
  80     }
  81
  82     /* signal the creation of the window */
  83     vlc_thread_ready( p_event );
  84
  85     /* Main loop */
  86     /* GetMessage will sleep if there's no message in the queue */
  87     while( !p_event->b_die
  88            && GetMessage( &msg, p_event->p_vout->p_sys->hwnd, 0, 0 ) )
  89     {
  90         /* Check if we are asked to exit */
  91         if( p_event->b_die )
  92             break;
  93
  94         switch( msg.message )
  95         {
  96
  97         case WM_NCMOUSEMOVE:
  98         case WM_MOUSEMOVE:
  99             vout_PlacePicture( p_event->p_vout,
 100                                p_event->p_vout->p_sys->i_window_width,
 101                                p_event->p_vout->p_sys->i_window_height,
 102                                &i_x, &i_y, &i_width, &i_height );
 103
 104             val.i_int = ( GET_X_LPARAM(msg.lParam) - i_x )
 105                          * p_event->p_vout->render.i_width / i_width;
 106             var_Set( p_event->p_vout, "mouse-x", val );
 107             val.i_int = ( GET_Y_LPARAM(msg.lParam) - i_y )
 108                          * p_event->p_vout->render.i_height / i_height;
 109             var_Set( p_event->p_vout, "mouse-y", val );
 110
 111             val.b_bool = VLC_TRUE;
 112             var_Set( p_event->p_vout, "mouse-moved", val );
 113
 114             if( (abs(GET_X_LPARAM(msg.lParam) - old_mouse_pos.x) > 2 ||
 115                 (abs(GET_Y_LPARAM(msg.lParam) - old_mouse_pos.y)) > 2 ) )
 116             {
 117                 GetCursorPos( &old_mouse_pos );
 118                 p_event->p_vout->p_sys->i_lastmoved = mdate();
 119
 120                 if( p_event->p_vout->p_sys->b_cursor_hidden )
 121                 {
 122                     p_event->p_vout->p_sys->b_cursor_hidden = 0;
 123                     ShowCursor( TRUE );
 124                 }
 125             }
 126             break;
 127
 128         case WM_VLC_HIDE_MOUSE:
 129             GetCursorPos( &old_mouse_pos );
 130             ShowCursor( FALSE );
 131             break;
 132
 133         case WM_LBUTTONDOWN:
 134             var_Get( p_event->p_vout, "mouse-button-down", &val );
 135             val.i_int |= 1;
 136             var_Set( p_event->p_vout, "mouse-button-down", val );
 137             break;
 138
 139         case WM_LBUTTONUP:
 140             var_Get( p_event->p_vout, "mouse-button-down", &val );
 141             val.i_int &= ~1;
 142             var_Set( p_event->p_vout, "mouse-button-down", val );
 143
 144             val.b_bool = VLC_TRUE;
 145             var_Set( p_event->p_vout, "mouse-clicked", val );
 146             break;
 147
 148         case WM_LBUTTONDBLCLK:
 149             p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 150             break;
 151
 152         case WM_MBUTTONDOWN:
 153             var_Get( p_event->p_vout, "mouse-button-down", &val );
 154             val.i_int |= 2;
 155             var_Set( p_event->p_vout, "mouse-button-down", val );
 156             break;
 157
 158         case WM_MBUTTONUP:
 159             var_Get( p_event->p_vout, "mouse-button-down", &val );
 160             val.i_int &= ~2;
 161             var_Set( p_event->p_vout, "mouse-button-down", val );
 162             break;
 163
 164         case WM_RBUTTONDOWN:
 165             var_Get( p_event->p_vout, "mouse-button-down", &val );
 166             val.i_int |= 4;
 167             var_Set( p_event->p_vout, "mouse-button-down", val );
 168             break;
 169
 170         case WM_RBUTTONUP:
 171             var_Get( p_event->p_vout, "mouse-button-down", &val );
 172             val.i_int &= ~4;
 173             var_Set( p_event->p_vout, "mouse-button-down", val );
 174             {
 175                 intf_thread_t *p_intf;
 176                 p_intf = vlc_object_find( p_event, VLC_OBJECT_INTF,
 177                                                    FIND_ANYWHERE );
 178                 if( p_intf )
 179                 {
 180                     p_intf->b_menu_change = 1;
 181                     vlc_object_release( p_intf );
 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                 /* exit application */
 195                 p_event->p_vlc->b_die = VLC_TRUE;
 196                 break;
 197
 198             case VK_SPACE:
 199             {
 200                 vlc_object_t *p_input = vlc_object_find( p_event->p_vout,
 201                     VLC_OBJECT_INPUT, FIND_ANYWHERE );
 202                 if( p_input )
 203                 {
 204                     input_SetStatus( (input_thread_t *)p_input,
 205                                      INPUT_STATUS_PAUSE );
 206                     vlc_object_release( p_input );
 207                 }
 208                 break;
 209             }
 210
 211             case VK_F1: network_ChannelJoin( p_event, 1 ); break;
 212             case VK_F2: network_ChannelJoin( p_event, 2 ); break;
 213             case VK_F3: network_ChannelJoin( p_event, 3 ); break;
 214             case VK_F4: network_ChannelJoin( p_event, 4 ); break;
 215             case VK_F5: network_ChannelJoin( p_event, 5 ); break;
 216             case VK_F6: network_ChannelJoin( p_event, 6 ); break;
 217             case VK_F7: network_ChannelJoin( p_event, 7 ); break;
 218             case VK_F8: network_ChannelJoin( p_event, 8 ); break;
 219             case VK_F9: network_ChannelJoin( p_event, 9 ); break;
 220             case VK_F10: network_ChannelJoin( p_event, 10 ); break;
 221             case VK_F11: network_ChannelJoin( p_event, 11 ); break;
 222             case VK_F12: network_ChannelJoin( p_event, 12 ); break;
 223             }
 224             TranslateMessage(&msg);
 225             break;
 226
 227         case WM_CHAR:
 228             switch( msg.wParam )
 229             {
 230             case 'q':
 231             case 'Q':
 232                 /* exit application */
 233                 p_event->p_vlc->b_die = VLC_TRUE;
 234                 break;
 235
 236             case 'f':                            /* switch to fullscreen */
 237             case 'F':
 238                 p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 239                 break;
 240
 241             case 'c':                                /* toggle grayscale */
 242             case 'C':
 243                 p_event->p_vout->b_grayscale = ! p_event->p_vout->b_grayscale;
 244                 p_event->p_vout->p_sys->i_changes |= VOUT_GRAYSCALE_CHANGE;
 245                 break;
 246
 247             case 'i':                                     /* toggle info */
 248             case 'I':
 249                 p_event->p_vout->b_info = ! p_event->p_vout->b_info;
 250                 p_event->p_vout->p_sys->i_changes |= VOUT_INFO_CHANGE;
 251                 break;
 252
 253             case 's':                                  /* toggle scaling */
 254             case 'S':
 255                 p_event->p_vout->b_scale = ! p_event->p_vout->b_scale;
 256                 p_event->p_vout->p_sys->i_changes |= VOUT_SCALE_CHANGE;
 257                 break;
 258
 259             case ' ':                                /* toggle interface */
 260                 p_event->p_vout->b_interface = ! p_event->p_vout->b_interface;
 261                 p_event->p_vout->p_sys->i_changes |= VOUT_INTF_CHANGE;
 262                 break;
 263
 264             default:
 265                 break;
 266             }
 267
 268         default:
 269             /* Messages we don't handle directly are dispatched to the
 270              * window procedure */
 271             TranslateMessage(&msg);
 272             DispatchMessage(&msg);
 273             break;
 274
 275         } /* End Switch */
 276
 277     } /* End Main loop */
 278
 279     if( msg.message == WM_QUIT )
 280     {
 281         msg_Warn( p_event, "WM_QUIT... should not happen!!" );
 282         p_event->p_vout->p_sys->hwnd = NULL; /* Window already destroyed */
 283     }
 284
 285     msg_Dbg( p_event, "DirectXEventThread terminating" );
 286
 287     /* clear the changes formerly signaled */
 288     p_event->p_vout->p_sys->i_changes = 0;
 289
 290     DirectXCloseWindow( p_event->p_vout );
 291 }
 292
 293
 294 /* following functions are local */
 295
 296 /*****************************************************************************
 297  * DirectXCreateWindow: create a window for the video.
 298  *****************************************************************************
 299  * Before creating a direct draw surface, we need to create a window in which
 300  * the video will be displayed. This window will also allow us to capture the
 301  * events.
 302  *****************************************************************************/
 303 static int DirectXCreateWindow( vout_thread_t *p_vout )
 304 {
 305     HINSTANCE  hInstance;
 306     COLORREF   colorkey;
 307     HDC        hdc;
 308     HMENU      hMenu;
 309     RECT       rect_window;
 310
 311     vlc_value_t val;
 312
 313     msg_Dbg( p_vout, "DirectXCreateWindow" );
 314
 315     /* Get this module's instance */
 316     hInstance = GetModuleHandle(NULL);
 317
 318     /* Create a BRUSH that will be used by Windows to paint the window
 319      * background.
 320      * This window background is important for us as it will be used by the
 321      * graphics card to display the overlay.
 322      * This is why we carefully choose the color for this background, the goal
 323      * being to choose a color which isn't complete black but nearly. We
 324      * obviously don't want to use black as a colorkey for the overlay because
 325      * black is one of the most used color and thus would give us undesirable
 326      * effects */
 327     /* the first step is to find the colorkey we want to use. The difficulty
 328      * comes from the potential dithering (depends on the display depth)
 329      * because we need to know the real RGB value of the chosen colorkey */
 330     hdc = GetDC( NULL );
 331     for( colorkey = 0x0a; colorkey < 0xff /* all shades of red */; colorkey++ )
 332     {
 333         if( colorkey == GetNearestColor( hdc, colorkey ) )
 334         {
 335             break;
 336         }
 337     }
 338     msg_Dbg( p_vout, "background color: %i", colorkey );
 339
 340     /* Create the actual brush */
 341     p_vout->p_sys->hbrush = CreateSolidBrush(colorkey);
 342     p_vout->p_sys->i_rgb_colorkey = (int)colorkey;
 343
 344     /* Get the current size of the display and its colour depth */
 345     p_vout->p_sys->rect_display.right = GetDeviceCaps( hdc, HORZRES );
 346     p_vout->p_sys->rect_display.bottom = GetDeviceCaps( hdc, VERTRES );
 347     p_vout->p_sys->i_display_depth = GetDeviceCaps( hdc, BITSPIXEL );
 348     msg_Dbg( p_vout, "screen dimensions %ix%i colour depth %i",
 349                       p_vout->p_sys->rect_display.right,
 350                       p_vout->p_sys->rect_display.bottom,
 351                       p_vout->p_sys->i_display_depth );
 352
 353     ReleaseDC( NULL, hdc );
 354
 355     /* If an external window was specified, we'll draw in it. */
 356     var_Get( p_vout->p_vlc, "drawable", &val );
 357     p_vout->p_sys->hparent = p_vout->p_sys->hwnd =
 358              val.i_int ?  (void*)(ptrdiff_t) val.i_int : NULL;
 359
 360     if( p_vout->p_sys->hparent )
 361     {
 362         msg_Dbg( p_vout, "using external window %p\n", p_vout->p_sys->hwnd );
 363
 364         /* Set stuff in the window that we can not put directly in
 365          * a class (see below). */
 366         SetClassLong( p_vout->p_sys->hwnd,
 367                       GCL_STYLE, CS_DBLCLKS );
 368         SetClassLong( p_vout->p_sys->hwnd,
 369                       GCL_HBRBACKGROUND, (LONG)p_vout->p_sys->hbrush );
 370         SetClassLong( p_vout->p_sys->hwnd,
 371                       GCL_HCURSOR, (LONG)LoadCursor(NULL, IDC_ARROW) );
 372         /* Store a p_vout pointer into the window local storage (for later
 373          * use in DirectXEventProc). */
 374         SetWindowLong( p_vout->p_sys->hwnd, GWL_USERDATA, (LONG)p_vout );
 375
 376         p_vout->p_sys->pf_wndproc =
 377                (WNDPROC)SetWindowLong( p_vout->p_sys->hwnd,
 378                                        GWL_WNDPROC, (LONG)DirectXEventProc );
 379
 380         /* Blam! Erase everything that might have been there. */
 381         RedrawWindow( p_vout->p_sys->hwnd, NULL, NULL,
 382                       RDW_INVALIDATE | RDW_ERASE );
 383     }
 384     else
 385     {
 386         WNDCLASSEX wc;                            /* window class components */
 387         HICON      vlc_icon = NULL;
 388         char       vlc_path[MAX_PATH+1];
 389
 390         /* Get the Icon from the main app */
 391         vlc_icon = NULL;
 392         if( GetModuleFileName( NULL, vlc_path, MAX_PATH ) )
 393         {
 394             vlc_icon = ExtractIcon( hInstance, vlc_path, 0 );
 395         }
 396
 397         /* Fill in the window class structure */
 398         wc.cbSize        = sizeof(WNDCLASSEX);
 399         wc.style         = CS_DBLCLKS;                   /* style: dbl click */
 400         wc.lpfnWndProc   = (WNDPROC)DirectXEventProc;       /* event handler */
 401         wc.cbClsExtra    = 0;                         /* no extra class data */
 402         wc.cbWndExtra    = 0;                        /* no extra window data */
 403         wc.hInstance     = hInstance;                            /* instance */
 404         wc.hIcon         = vlc_icon;                /* load the vlc big icon */
 405         wc.hCursor       = LoadCursor(NULL, IDC_ARROW);    /* default cursor */
 406         wc.hbrBackground = p_vout->p_sys->hbrush;        /* background color */
 407         wc.lpszMenuName  = NULL;                                  /* no menu */
 408         wc.lpszClassName = "VLC DirectX";             /* use a special class */
 409         wc.hIconSm       = vlc_icon;              /* load the vlc small icon */
 410
 411         /* Register the window class */
 412         if( !RegisterClassEx(&wc) )
 413         {
 414             WNDCLASS wndclass;
 415
 416             /* Free window background brush */
 417             if( p_vout->p_sys->hbrush )
 418             {
 419                 DeleteObject( p_vout->p_sys->hbrush );
 420                 p_vout->p_sys->hbrush = NULL;
 421             }
 422
 423             if( vlc_icon )
 424             {
 425                 DestroyIcon( vlc_icon );
 426             }
 427
 428             /* Check why it failed. If it's because one already exists
 429              * then fine, otherwise return with an error. */
 430             if( !GetClassInfo( hInstance, "VLC DirectX", &wndclass ) )
 431             {
 432                 msg_Err( p_vout, "DirectXCreateWindow RegisterClass FAILED" );
 433                 return VLC_EGENERIC;
 434             }
 435         }
 436
 437         /* When you create a window you give the dimensions you wish it to
 438          * have. Unfortunatly these dimensions will include the borders and
 439          * titlebar. We use the following function to find out the size of
 440          * the window corresponding to the useable surface we want */
 441         rect_window.top    = 10;
 442         rect_window.left   = 10;
 443         rect_window.right  = rect_window.left + p_vout->p_sys->i_window_width;
 444         rect_window.bottom = rect_window.top + p_vout->p_sys->i_window_height;
 445         AdjustWindowRect( &rect_window, WS_OVERLAPPEDWINDOW|WS_SIZEBOX, 0 );
 446
 447         /* Create the window */
 448         p_vout->p_sys->hwnd =
 449             CreateWindow( "VLC DirectX",             /* name of window class */
 450                     VOUT_TITLE " (DirectX Output)", /* window title bar text */
 451                     WS_OVERLAPPEDWINDOW | WS_SIZEBOX,        /* window style */
 452                     CW_USEDEFAULT,                   /* default X coordinate */
 453                     0,                               /* default Y coordinate */
 454                     rect_window.right - rect_window.left,    /* window width */
 455                     rect_window.bottom - rect_window.top,   /* window height */
 456                     NULL,                                /* no parent window */
 457                     NULL,                          /* no menu in this window */
 458                     hInstance,            /* handle of this program instance */
 459                     (LPVOID)p_vout );            /* send p_vout to WM_CREATE */
 460
 461         if( !p_vout->p_sys->hwnd )
 462         {
 463             msg_Warn( p_vout, "DirectXCreateWindow create window FAILED" );
 464             return VLC_EGENERIC;
 465         }
 466     }
 467
 468     /* Append a "Always On Top" entry in the system menu */
 469     hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 470     AppendMenu( hMenu, MF_SEPARATOR, 0, "" );
 471     AppendMenu( hMenu, MF_STRING | MF_UNCHECKED,
 472                        IDM_TOGGLE_ON_TOP, "Always on &Top" );
 473
 474     /* Now display the window */
 475     ShowWindow( p_vout->p_sys->hwnd, SW_SHOW );
 476
 477     return VLC_SUCCESS;
 478 }
 479
 480 /*****************************************************************************
 481  * DirectXCloseWindow: close the window created by DirectXCreateWindow
 482  *****************************************************************************
 483  * This function returns all resources allocated by DirectXCreateWindow.
 484  *****************************************************************************/
 485 static void DirectXCloseWindow( vout_thread_t *p_vout )
 486 {
 487     msg_Dbg( p_vout, "DirectXCloseWindow" );
 488
 489     if( p_vout->p_sys->hwnd && !p_vout->p_sys->hparent )
 490     {
 491         DestroyWindow( p_vout->p_sys->hwnd );
 492     }
 493
 494     p_vout->p_sys->hwnd = NULL;
 495
 496     /* We don't unregister the Window Class because it could lead to race
 497      * conditions and it will be done anyway by the system when the app will
 498      * exit */
 499 }
 500
 501 /*****************************************************************************
 502  * DirectXUpdateRects: update clipping rectangles
 503  *****************************************************************************
 504  * This function is called when the window position or size are changed, and
 505  * its job is to update the source and destination RECTs used to display the
 506  * picture.
 507  *****************************************************************************/
 508 void DirectXUpdateRects( vout_thread_t *p_vout, vlc_bool_t b_force )
 509 {
 510 #define rect_src p_vout->p_sys->rect_src
 511 #define rect_src_clipped p_vout->p_sys->rect_src_clipped
 512 #define rect_dest p_vout->p_sys->rect_dest
 513 #define rect_dest_clipped p_vout->p_sys->rect_dest_clipped
 514
 515     int i_width, i_height, i_x, i_y;
 516
 517     RECT  rect;
 518     POINT point;
 519
 520     /* Retrieve the window size */
 521     GetClientRect( p_vout->p_sys->hwnd, &rect );
 522
 523     /* Retrieve the window position */
 524     point.x = point.y = 0;
 525     ClientToScreen( p_vout->p_sys->hwnd, &point );
 526
 527     /* If nothing changed, we can return */
 528     if( !b_force
 529          && p_vout->p_sys->i_window_width == rect.right
 530          && p_vout->p_sys->i_window_height == rect.bottom
 531          && p_vout->p_sys->i_window_x == point.x
 532          && p_vout->p_sys->i_window_y == point.y )
 533     {
 534         return;
 535     }
 536
 537     /* Update the window position and size */
 538     p_vout->p_sys->i_window_x = point.x;
 539     p_vout->p_sys->i_window_y = point.y;
 540     p_vout->p_sys->i_window_width = rect.right;
 541     p_vout->p_sys->i_window_height = rect.bottom;
 542
 543     vout_PlacePicture( p_vout, rect.right, rect.bottom,
 544                        &i_x, &i_y, &i_width, &i_height );
 545
 546     /* Destination image position and dimensions */
 547     rect_dest.left = point.x + i_x;
 548     rect_dest.right = rect_dest.left + i_width;
 549     rect_dest.top = point.y + i_y;
 550     rect_dest.bottom = rect_dest.top + i_height;
 551
 552
 553     /* UpdateOverlay directdraw function doesn't automatically clip to the
 554      * display size so we need to do it otherwise it will fail */
 555
 556     /* Clip the destination window */
 557     IntersectRect( &rect_dest_clipped,
 558                    &rect_dest,
 559                    &p_vout->p_sys->rect_display );
 560
 561 #if 0
 562     msg_Dbg( p_vout, "DirectXUpdateRects image_dst_clipped coords:"
 563                      " %i,%i,%i,%i",
 564                      rect_dest_clipped.left, rect_dest_clipped.top,
 565                      rect_dest_clipped.right, rect_dest_clipped.bottom );
 566 #endif
 567
 568     /* the 2 following lines are to fix a bug when clicking on the desktop */
 569     if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
 570         (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
 571     {
 572         SetRectEmpty( &rect_src_clipped );
 573         return;
 574     }
 575
 576     /* src image dimensions */
 577     rect_src.left = 0;
 578     rect_src.top = 0;
 579     rect_src.right = p_vout->render.i_width;
 580     rect_src.bottom = p_vout->render.i_height;
 581
 582     /* Clip the source image */
 583     rect_src_clipped.left = (rect_dest_clipped.left - rect_dest.left) *
 584       p_vout->render.i_width / (rect_dest.right - rect_dest.left);
 585     rect_src_clipped.right = p_vout->render.i_width -
 586       (rect_dest.right - rect_dest_clipped.right) * p_vout->render.i_width /
 587       (rect_dest.right - rect_dest.left);
 588     rect_src_clipped.top = (rect_dest_clipped.top - rect_dest.top) *
 589       p_vout->render.i_height / (rect_dest.bottom - rect_dest.top);
 590     rect_src_clipped.bottom = p_vout->render.i_height -
 591       (rect_dest.bottom - rect_dest_clipped.bottom) * p_vout->render.i_height /
 592       (rect_dest.bottom - rect_dest.top);
 593
 594 #if 0
 595     msg_Dbg( p_vout, "DirectXUpdateRects image_src_clipped"
 596                      " coords: %i,%i,%i,%i",
 597                      rect_src_clipped.left, rect_src_clipped.top,
 598                      rect_src_clipped.right, rect_src_clipped.bottom );
 599 #endif
 600
 601     /* Signal the size change */
 602     if( !p_vout->p_sys->p_event->b_die )
 603     {
 604         if( p_vout->p_sys->b_using_overlay )
 605         {
 606             DirectXUpdateOverlay( p_vout );
 607         }
 608         else
 609         {
 610             p_vout->p_sys->i_changes |= VOUT_SIZE_CHANGE;
 611         }
 612     }
 613
 614 #undef rect_src
 615 #undef rect_src_clipped
 616 #undef rect_dest
 617 #undef rect_dest_clipped
 618 }
 619
 620 /*****************************************************************************
 621  * DirectXEventProc: This is the window event processing function.
 622  *****************************************************************************
 623  * On Windows, when you create a window you have to attach an event processing
 624  * function to it. The aim of this function is to manage "Queued Messages" and
 625  * "Nonqueued Messages".
 626  * Queued Messages are those picked up and retransmitted by vout_Manage
 627  * (using the GetMessage and DispatchMessage functions).
 628  * Nonqueued Messages are those that Windows will send directly to this
 629  * procedure (like WM_DESTROY, WM_WINDOWPOSCHANGED...)
 630  *****************************************************************************/
 631 static long FAR PASCAL DirectXEventProc( HWND hwnd, UINT message,
 632                                          WPARAM wParam, LPARAM lParam )
 633 {
 634     vout_thread_t *p_vout;
 635
 636     if( message == WM_CREATE )
 637     {
 638         /* Store p_vout for future use */
 639         p_vout = (vout_thread_t *)((CREATESTRUCT *)lParam)->lpCreateParams;
 640         SetWindowLong( hwnd, GWL_USERDATA, (LONG)p_vout );
 641     }
 642     else
 643     {
 644         p_vout = (vout_thread_t *)GetWindowLong( hwnd, GWL_USERDATA );
 645     }
 646
 647     switch( message )
 648     {
 649
 650     case WM_WINDOWPOSCHANGED:
 651         DirectXUpdateRects( p_vout, VLC_TRUE );
 652         return 0;
 653
 654     /* the user wants to close the window */
 655     case WM_CLOSE:
 656         msg_Dbg( p_vout, "WinProc WM_CLOSE" );
 657         /* exit application */
 658         p_vout->p_vlc->b_die = VLC_TRUE;
 659         return 0;
 660
 661     /* the window has been closed so shut down everything now */
 662     case WM_DESTROY:
 663         msg_Dbg( p_vout, "WinProc WM_DESTROY" );
 664         /* just destroy the window */
 665         PostQuitMessage( 0 );
 666         return 0;
 667
 668     case WM_SYSCOMMAND:
 669         switch (wParam)
 670         {
 671             case SC_SCREENSAVE:                     /* catch the screensaver */
 672             case SC_MONITORPOWER:              /* catch the monitor turn-off */
 673                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND" );
 674                 return 0;                  /* this stops them from happening */
 675             case IDM_TOGGLE_ON_TOP:            /* toggle the "on top" status */
 676             {
 677                 vlc_value_t val;
 678                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND: IDM_TOGGLE_ON_TOP");
 679
 680                 /* Get the current value... */
 681                 if( var_Get( p_vout, "directx-on-top", &val ) < 0 )
 682                     return 0;
 683                 /* ...and change it */
 684                 val.b_bool = !val.b_bool;
 685                 var_Set( p_vout, "directx-on-top", val );
 686                 return 0;
 687                 break;
 688             }
 689         }
 690         break;
 691
 692     case WM_ERASEBKGND:
 693         if( !p_vout->p_sys->b_using_overlay )
 694         {
 695             /* We want to eliminate unnecessary background redraws which create
 696              * an annoying flickering */
 697             int i_width, i_height, i_x, i_y;
 698             RECT rect_temp;
 699             GetClipBox( (HDC)wParam, &rect_temp );
 700 #if 0
 701             msg_Dbg( p_vout, "WinProc WM_ERASEBKGND %i,%i,%i,%i",
 702                           rect_temp.left, rect_temp.top,
 703                           rect_temp.right, rect_temp.bottom );
 704 #endif
 705             vout_PlacePicture( p_vout, p_vout->p_sys->i_window_width,
 706                                p_vout->p_sys->i_window_height,
 707                                &i_x, &i_y, &i_width, &i_height );
 708             ExcludeClipRect( (HDC)wParam, i_x, i_y,
 709                              i_x + i_width, i_y + i_height );
 710         }
 711         break;
 712
 713     default:
 714         //msg_Dbg( p_vout, "WinProc WM Default %i", message );
 715         break;
 716     }
 717
 718     return DefWindowProc(hwnd, message, wParam, lParam);
 719 }
 720