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 1.24 2003/10/17 16:40:09 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 static void DirectXPopupMenu( event_thread_t *p_event, vlc_bool_t b_open )
  55 {
  56     playlist_t *p_playlist =
  57         vlc_object_find( p_event, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
  58     if( p_playlist != NULL )
  59     {
  60         vlc_value_t val;
  61         val.b_bool = b_open;
  62         var_Set( p_playlist, "intf-popupmenu", val );
  63         vlc_object_release( p_playlist );
  64     }
  65 }
  66
  67 /*****************************************************************************
  68  * DirectXEventThread: Create video window & handle its messages
  69  *****************************************************************************
  70  * This function creates a video window and then enters an infinite loop
  71  * that handles the messages sent to that window.
  72  * The main goal of this thread is to isolate the Win32 PeekMessage function
  73  * because this one can block for a long time.
  74  *****************************************************************************/
  75 void DirectXEventThread( event_thread_t *p_event )
  76 {
  77     MSG msg;
  78     POINT old_mouse_pos = {0,0};
  79     vlc_value_t val;
  80     int i_width, i_height, i_x, i_y;
  81
  82     /* Initialisation */
  83
  84     /* Create a window for the video */
  85     /* Creating a window under Windows also initializes the thread's event
  86      * message queue */
  87     if( DirectXCreateWindow( p_event->p_vout ) )
  88     {
  89         msg_Err( p_event, "out of memory" );
  90         p_event->b_dead = VLC_TRUE;
  91     }
  92
  93     /* signal the creation of the window */
  94     vlc_thread_ready( p_event );
  95
  96     /* Main loop */
  97     /* GetMessage will sleep if there's no message in the queue */
  98     while( !p_event->b_die && ( p_event->p_vout->p_sys->hparent ||
  99            GetMessage( &msg, p_event->p_vout->p_sys->hwnd, 0, 0 ) ) )
 100     {
 101         /* Check if we are asked to exit */
 102         if( p_event->b_die )
 103             break;
 104
 105         if( p_event->p_vout->p_sys->hparent ) msleep( INTF_IDLE_SLEEP );
 106
 107         switch( msg.message )
 108         {
 109
 110         case WM_NCMOUSEMOVE:
 111         case WM_MOUSEMOVE:
 112             vout_PlacePicture( p_event->p_vout,
 113                                p_event->p_vout->p_sys->i_window_width,
 114                                p_event->p_vout->p_sys->i_window_height,
 115                                &i_x, &i_y, &i_width, &i_height );
 116
 117             val.i_int = ( GET_X_LPARAM(msg.lParam) - i_x )
 118                          * p_event->p_vout->render.i_width / i_width;
 119             var_Set( p_event->p_vout, "mouse-x", val );
 120             val.i_int = ( GET_Y_LPARAM(msg.lParam) - i_y )
 121                          * p_event->p_vout->render.i_height / i_height;
 122             var_Set( p_event->p_vout, "mouse-y", val );
 123
 124             val.b_bool = VLC_TRUE;
 125             var_Set( p_event->p_vout, "mouse-moved", val );
 126
 127             if( (abs(GET_X_LPARAM(msg.lParam) - old_mouse_pos.x) > 2 ||
 128                 (abs(GET_Y_LPARAM(msg.lParam) - old_mouse_pos.y)) > 2 ) )
 129             {
 130                 GetCursorPos( &old_mouse_pos );
 131                 p_event->p_vout->p_sys->i_lastmoved = mdate();
 132
 133                 if( p_event->p_vout->p_sys->b_cursor_hidden )
 134                 {
 135                     p_event->p_vout->p_sys->b_cursor_hidden = 0;
 136                     ShowCursor( TRUE );
 137                 }
 138             }
 139             break;
 140
 141         case WM_VLC_HIDE_MOUSE:
 142             GetCursorPos( &old_mouse_pos );
 143             ShowCursor( FALSE );
 144             break;
 145
 146         case WM_LBUTTONDOWN:
 147             var_Get( p_event->p_vout, "mouse-button-down", &val );
 148             val.i_int |= 1;
 149             var_Set( p_event->p_vout, "mouse-button-down", val );
 150             DirectXPopupMenu( p_event, VLC_FALSE );
 151             break;
 152
 153         case WM_LBUTTONUP:
 154             var_Get( p_event->p_vout, "mouse-button-down", &val );
 155             val.i_int &= ~1;
 156             var_Set( p_event->p_vout, "mouse-button-down", val );
 157
 158             val.b_bool = VLC_TRUE;
 159             var_Set( p_event->p_vout, "mouse-clicked", val );
 160             break;
 161
 162         case WM_LBUTTONDBLCLK:
 163             p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 164             break;
 165
 166         case WM_MBUTTONDOWN:
 167             var_Get( p_event->p_vout, "mouse-button-down", &val );
 168             val.i_int |= 2;
 169             var_Set( p_event->p_vout, "mouse-button-down", val );
 170             DirectXPopupMenu( p_event, VLC_FALSE );
 171             break;
 172
 173         case WM_MBUTTONUP:
 174             var_Get( p_event->p_vout, "mouse-button-down", &val );
 175             val.i_int &= ~2;
 176             var_Set( p_event->p_vout, "mouse-button-down", val );
 177             break;
 178
 179         case WM_RBUTTONDOWN:
 180             var_Get( p_event->p_vout, "mouse-button-down", &val );
 181             val.i_int |= 4;
 182             var_Set( p_event->p_vout, "mouse-button-down", val );
 183             DirectXPopupMenu( p_event, VLC_FALSE );
 184             break;
 185
 186         case WM_RBUTTONUP:
 187             var_Get( p_event->p_vout, "mouse-button-down", &val );
 188             val.i_int &= ~4;
 189             var_Set( p_event->p_vout, "mouse-button-down", val );
 190             DirectXPopupMenu( p_event, VLC_TRUE );
 191             break;
 192
 193         case WM_KEYDOWN:
 194             /* the key events are first processed here. The next
 195              * message processed by this main message loop will be the
 196              * char translation of the key event */
 197             msg_Dbg( p_event, "WM_KEYDOWN" );
 198             switch( msg.wParam )
 199             {
 200             case VK_ESCAPE:
 201                 if( p_event->p_vout->b_fullscreen )
 202                 {
 203                     p_event->p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 204                 }
 205                 else
 206                 {
 207                     /* close video window */
 208                     PostMessage( msg.hwnd, WM_CLOSE, 0, 0 );
 209                 }
 210                 break;
 211
 212             case VK_MENU:
 213                 {
 214                     playlist_t *p_playlist =
 215                         vlc_object_find( p_event, VLC_OBJECT_PLAYLIST,
 216                                          FIND_ANYWHERE );
 217                     if( p_playlist != NULL )
 218                     {
 219                         vlc_value_t val;
 220                         var_Set( p_playlist, "intf-popupmenu", val );
 221                         vlc_object_release( p_playlist );
 222                     }
 223                 }
 224                 break;
 225
 226             case VK_LEFT:
 227                 if( GetKeyState(VK_CONTROL) & 0x8000 )
 228                 {
 229                     input_Seek( p_event->p_vout, -60,
 230                                 INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 231                 }
 232                 else
 233                 {
 234                     val.psz_string = "LEFT";
 235                     var_Set( p_event->p_vout, "key-pressed", val );
 236                 }
 237                 break;
 238             case VK_RIGHT:
 239                 if( GetKeyState(VK_CONTROL) & 0x8000 )
 240                 {
 241                    input_Seek( p_event->p_vout, 60,
 242                                INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 243                 }
 244                 else
 245                 {
 246                     val.psz_string = "RIGHT";
 247                     var_Set( p_event->p_vout, "key-pressed", val );
 248                 }
 249                 break;
 250             case VK_UP:
 251                 val.psz_string = "UP";
 252                 var_Set( p_event->p_vout, "key-pressed", val );
 253                 break;
 254             case VK_DOWN:
 255                 val.psz_string = "DOWN";
 256                 var_Set( p_event->p_vout, "key-pressed", val );
 257                 break;
 258             case VK_RETURN:
 259                 val.psz_string = "ENTER";
 260                 var_Set( p_event->p_vout, "key-pressed", val );
 261                 break;
 262             case VK_HOME:
 263                 input_Seek( p_event->p_vout, 0,
 264                             INPUT_SEEK_BYTES | INPUT_SEEK_SET );
 265                 break;
 266             case VK_END:
 267                 input_Seek( p_event->p_vout, 0,
 268                             INPUT_SEEK_BYTES | INPUT_SEEK_END );
 269                 break;
 270             case VK_PRIOR:
 271                 input_Seek( p_event->p_vout, 10,
 272                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 273                 break;
 274             case VK_NEXT:
 275                 input_Seek( p_event->p_vout, -10,
 276                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 277                 break;
 278             case VK_SPACE:
 279                 input_SetStatus( p_event->p_vout, INPUT_STATUS_PAUSE );
 280                 break;
 281             }
 282             TranslateMessage(&msg);
 283             break;
 284
 285         case WM_CHAR:
 286             switch( msg.wParam )
 287             {
 288             case 'q':
 289             case 'Q':
 290                 /* exit application */
 291                 p_event->p_vlc->b_die = VLC_TRUE;
 292                 break;
 293
 294             case 'f':                            /* switch to fullscreen */
 295             case 'F':
 296                 p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 297                 break;
 298
 299             default:
 300                 break;
 301             }
 302
 303         default:
 304             /* Messages we don't handle directly are dispatched to the
 305              * window procedure */
 306             TranslateMessage(&msg);
 307             DispatchMessage(&msg);
 308             break;
 309
 310         } /* End Switch */
 311
 312     } /* End Main loop */
 313
 314     if( msg.message == WM_QUIT )
 315     {
 316         msg_Warn( p_event, "WM_QUIT... should not happen!!" );
 317         p_event->p_vout->p_sys->hwnd = NULL; /* Window already destroyed */
 318     }
 319
 320     msg_Dbg( p_event, "DirectXEventThread terminating" );
 321
 322     /* clear the changes formerly signaled */
 323     p_event->p_vout->p_sys->i_changes = 0;
 324
 325     DirectXCloseWindow( p_event->p_vout );
 326 }
 327
 328
 329 /* following functions are local */
 330
 331 /*****************************************************************************
 332  * DirectXCreateWindow: create a window for the video.
 333  *****************************************************************************
 334  * Before creating a direct draw surface, we need to create a window in which
 335  * the video will be displayed. This window will also allow us to capture the
 336  * events.
 337  *****************************************************************************/
 338 static int DirectXCreateWindow( vout_thread_t *p_vout )
 339 {
 340     HINSTANCE  hInstance;
 341     COLORREF   colorkey;
 342     HDC        hdc;
 343     HMENU      hMenu;
 344     RECT       rect_window;
 345
 346     vlc_value_t val;
 347
 348     msg_Dbg( p_vout, "DirectXCreateWindow" );
 349
 350     /* Get this module's instance */
 351     hInstance = GetModuleHandle(NULL);
 352
 353     /* Create a BRUSH that will be used by Windows to paint the window
 354      * background.
 355      * This window background is important for us as it will be used by the
 356      * graphics card to display the overlay.
 357      * This is why we carefully choose the color for this background, the goal
 358      * being to choose a color which isn't complete black but nearly. We
 359      * obviously don't want to use black as a colorkey for the overlay because
 360      * black is one of the most used color and thus would give us undesirable
 361      * effects */
 362     /* the first step is to find the colorkey we want to use. The difficulty
 363      * comes from the potential dithering (depends on the display depth)
 364      * because we need to know the real RGB value of the chosen colorkey */
 365     hdc = GetDC( NULL );
 366     for( colorkey = 0x0a; colorkey < 0xff /* all shades of red */; colorkey++ )
 367     {
 368         if( colorkey == GetNearestColor( hdc, colorkey ) )
 369         {
 370             break;
 371         }
 372     }
 373     msg_Dbg( p_vout, "background color: %i", colorkey );
 374
 375     /* Create the actual brush */
 376     p_vout->p_sys->hbrush = CreateSolidBrush(colorkey);
 377     p_vout->p_sys->i_rgb_colorkey = (int)colorkey;
 378
 379     /* Get the current size of the display and its colour depth */
 380     p_vout->p_sys->rect_display.right = GetDeviceCaps( hdc, HORZRES );
 381     p_vout->p_sys->rect_display.bottom = GetDeviceCaps( hdc, VERTRES );
 382     p_vout->p_sys->i_display_depth = GetDeviceCaps( hdc, BITSPIXEL );
 383     msg_Dbg( p_vout, "screen dimensions %ix%i colour depth %i",
 384                       p_vout->p_sys->rect_display.right,
 385                       p_vout->p_sys->rect_display.bottom,
 386                       p_vout->p_sys->i_display_depth );
 387
 388     ReleaseDC( NULL, hdc );
 389
 390     /* If an external window was specified, we'll draw in it. */
 391     var_Get( p_vout->p_vlc, "drawable", &val );
 392     p_vout->p_sys->hparent = p_vout->p_sys->hwnd =
 393              val.i_int ?  (void*)(ptrdiff_t) val.i_int : NULL;
 394
 395     if( p_vout->p_sys->hparent )
 396     {
 397         msg_Dbg( p_vout, "using external window %p\n", p_vout->p_sys->hwnd );
 398
 399         /* Set stuff in the window that we can not put directly in
 400          * a class (see below). */
 401         SetClassLong( p_vout->p_sys->hwnd,
 402                       GCL_STYLE, CS_DBLCLKS );
 403         SetClassLong( p_vout->p_sys->hwnd,
 404                       GCL_HBRBACKGROUND, (LONG)p_vout->p_sys->hbrush );
 405         SetClassLong( p_vout->p_sys->hwnd,
 406                       GCL_HCURSOR, (LONG)LoadCursor(NULL, IDC_ARROW) );
 407         /* Store a p_vout pointer into the window local storage (for later
 408          * use in DirectXEventProc). */
 409         SetWindowLong( p_vout->p_sys->hwnd, GWL_USERDATA, (LONG)p_vout );
 410
 411         p_vout->p_sys->pf_wndproc =
 412                (WNDPROC)SetWindowLong( p_vout->p_sys->hwnd,
 413                                        GWL_WNDPROC, (LONG)DirectXEventProc );
 414
 415         /* Blam! Erase everything that might have been there. */
 416         RedrawWindow( p_vout->p_sys->hwnd, NULL, NULL,
 417                       RDW_INVALIDATE | RDW_ERASE );
 418     }
 419     else
 420     {
 421         WNDCLASSEX wc;                            /* window class components */
 422         HICON      vlc_icon = NULL;
 423         char       vlc_path[MAX_PATH+1];
 424
 425         /* Get the Icon from the main app */
 426         vlc_icon = NULL;
 427         if( GetModuleFileName( NULL, vlc_path, MAX_PATH ) )
 428         {
 429             vlc_icon = ExtractIcon( hInstance, vlc_path, 0 );
 430         }
 431
 432         /* Fill in the window class structure */
 433         wc.cbSize        = sizeof(WNDCLASSEX);
 434         wc.style         = CS_DBLCLKS;                   /* style: dbl click */
 435         wc.lpfnWndProc   = (WNDPROC)DirectXEventProc;       /* event handler */
 436         wc.cbClsExtra    = 0;                         /* no extra class data */
 437         wc.cbWndExtra    = 0;                        /* no extra window data */
 438         wc.hInstance     = hInstance;                            /* instance */
 439         wc.hIcon         = vlc_icon;                /* load the vlc big icon */
 440         wc.hCursor       = LoadCursor(NULL, IDC_ARROW);    /* default cursor */
 441         wc.hbrBackground = p_vout->p_sys->hbrush;        /* background color */
 442         wc.lpszMenuName  = NULL;                                  /* no menu */
 443         wc.lpszClassName = "VLC DirectX";             /* use a special class */
 444         wc.hIconSm       = vlc_icon;              /* load the vlc small icon */
 445
 446         /* Register the window class */
 447         if( !RegisterClassEx(&wc) )
 448         {
 449             WNDCLASS wndclass;
 450
 451             /* Free window background brush */
 452             if( p_vout->p_sys->hbrush )
 453             {
 454                 DeleteObject( p_vout->p_sys->hbrush );
 455                 p_vout->p_sys->hbrush = NULL;
 456             }
 457
 458             if( vlc_icon )
 459             {
 460                 DestroyIcon( vlc_icon );
 461             }
 462
 463             /* Check why it failed. If it's because one already exists
 464              * then fine, otherwise return with an error. */
 465             if( !GetClassInfo( hInstance, "VLC DirectX", &wndclass ) )
 466             {
 467                 msg_Err( p_vout, "DirectXCreateWindow RegisterClass FAILED" );
 468                 return VLC_EGENERIC;
 469             }
 470         }
 471
 472         /* When you create a window you give the dimensions you wish it to
 473          * have. Unfortunatly these dimensions will include the borders and
 474          * titlebar. We use the following function to find out the size of
 475          * the window corresponding to the useable surface we want */
 476         rect_window.top    = 10;
 477         rect_window.left   = 10;
 478         rect_window.right  = rect_window.left + p_vout->p_sys->i_window_width;
 479         rect_window.bottom = rect_window.top + p_vout->p_sys->i_window_height;
 480         AdjustWindowRect( &rect_window, WS_OVERLAPPEDWINDOW|WS_SIZEBOX, 0 );
 481
 482         /* Create the window */
 483         p_vout->p_sys->hwnd =
 484             CreateWindow( "VLC DirectX",             /* name of window class */
 485                     VOUT_TITLE " (DirectX Output)", /* window title bar text */
 486                     WS_OVERLAPPEDWINDOW | WS_SIZEBOX,        /* window style */
 487                     CW_USEDEFAULT,                   /* default X coordinate */
 488                     0,                               /* default Y coordinate */
 489                     rect_window.right - rect_window.left,    /* window width */
 490                     rect_window.bottom - rect_window.top,   /* window height */
 491                     NULL,                                /* no parent window */
 492                     NULL,                          /* no menu in this window */
 493                     hInstance,            /* handle of this program instance */
 494                     (LPVOID)p_vout );            /* send p_vout to WM_CREATE */
 495
 496         if( !p_vout->p_sys->hwnd )
 497         {
 498             msg_Warn( p_vout, "DirectXCreateWindow create window FAILED" );
 499             return VLC_EGENERIC;
 500         }
 501     }
 502
 503     /* Append a "Always On Top" entry in the system menu */
 504     hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 505     AppendMenu( hMenu, MF_SEPARATOR, 0, "" );
 506     AppendMenu( hMenu, MF_STRING | MF_UNCHECKED,
 507                        IDM_TOGGLE_ON_TOP, "Always on &Top" );
 508
 509     /* Now display the window */
 510     ShowWindow( p_vout->p_sys->hwnd, SW_SHOW );
 511
 512     return VLC_SUCCESS;
 513 }
 514
 515 /*****************************************************************************
 516  * DirectXCloseWindow: close the window created by DirectXCreateWindow
 517  *****************************************************************************
 518  * This function returns all resources allocated by DirectXCreateWindow.
 519  *****************************************************************************/
 520 static void DirectXCloseWindow( vout_thread_t *p_vout )
 521 {
 522     msg_Dbg( p_vout, "DirectXCloseWindow" );
 523
 524     if( p_vout->p_sys->hwnd && !p_vout->p_sys->hparent )
 525     {
 526         DestroyWindow( p_vout->p_sys->hwnd );
 527     }
 528     else if( p_vout->p_sys->hparent )
 529     {
 530         /* We don't want our windowproc to be called anymore */
 531         SetWindowLong( p_vout->p_sys->hwnd,
 532                        GWL_WNDPROC, (LONG)p_vout->p_sys->pf_wndproc );
 533
 534         /* Blam! Erase everything that might have been there. */
 535         InvalidateRect( p_vout->p_sys->hwnd, NULL, TRUE );
 536     }
 537
 538     p_vout->p_sys->hwnd = NULL;
 539
 540     /* We don't unregister the Window Class because it could lead to race
 541      * conditions and it will be done anyway by the system when the app will
 542      * exit */
 543 }
 544
 545 /*****************************************************************************
 546  * DirectXUpdateRects: update clipping rectangles
 547  *****************************************************************************
 548  * This function is called when the window position or size are changed, and
 549  * its job is to update the source and destination RECTs used to display the
 550  * picture.
 551  *****************************************************************************/
 552 void DirectXUpdateRects( vout_thread_t *p_vout, vlc_bool_t b_force )
 553 {
 554 #define rect_src p_vout->p_sys->rect_src
 555 #define rect_src_clipped p_vout->p_sys->rect_src_clipped
 556 #define rect_dest p_vout->p_sys->rect_dest
 557 #define rect_dest_clipped p_vout->p_sys->rect_dest_clipped
 558
 559     int i_width, i_height, i_x, i_y;
 560
 561     RECT  rect;
 562     POINT point;
 563
 564     /* Retrieve the window size */
 565     GetClientRect( p_vout->p_sys->hwnd, &rect );
 566
 567     /* Retrieve the window position */
 568     point.x = point.y = 0;
 569     ClientToScreen( p_vout->p_sys->hwnd, &point );
 570
 571     /* If nothing changed, we can return */
 572     if( !b_force
 573          && p_vout->p_sys->i_window_width == rect.right
 574          && p_vout->p_sys->i_window_height == rect.bottom
 575          && p_vout->p_sys->i_window_x == point.x
 576          && p_vout->p_sys->i_window_y == point.y )
 577     {
 578         return;
 579     }
 580
 581     /* Update the window position and size */
 582     p_vout->p_sys->i_window_x = point.x;
 583     p_vout->p_sys->i_window_y = point.y;
 584     p_vout->p_sys->i_window_width = rect.right;
 585     p_vout->p_sys->i_window_height = rect.bottom;
 586
 587     vout_PlacePicture( p_vout, rect.right, rect.bottom,
 588                        &i_x, &i_y, &i_width, &i_height );
 589
 590     /* Destination image position and dimensions */
 591     rect_dest.left = point.x + i_x;
 592     rect_dest.right = rect_dest.left + i_width;
 593     rect_dest.top = point.y + i_y;
 594     rect_dest.bottom = rect_dest.top + i_height;
 595
 596
 597     /* UpdateOverlay directdraw function doesn't automatically clip to the
 598      * display size so we need to do it otherwise it will fail */
 599
 600     /* Clip the destination window */
 601     IntersectRect( &rect_dest_clipped,
 602                    &rect_dest,
 603                    &p_vout->p_sys->rect_display );
 604
 605 #if 0
 606     msg_Dbg( p_vout, "DirectXUpdateRects image_dst_clipped coords:"
 607                      " %i,%i,%i,%i",
 608                      rect_dest_clipped.left, rect_dest_clipped.top,
 609                      rect_dest_clipped.right, rect_dest_clipped.bottom );
 610 #endif
 611
 612     /* the 2 following lines are to fix a bug when clicking on the desktop */
 613     if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
 614         (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
 615     {
 616         SetRectEmpty( &rect_src_clipped );
 617         return;
 618     }
 619
 620     /* src image dimensions */
 621     rect_src.left = 0;
 622     rect_src.top = 0;
 623     rect_src.right = p_vout->render.i_width;
 624     rect_src.bottom = p_vout->render.i_height;
 625
 626     /* Clip the source image */
 627     rect_src_clipped.left = (rect_dest_clipped.left - rect_dest.left) *
 628       p_vout->render.i_width / (rect_dest.right - rect_dest.left);
 629     rect_src_clipped.right = p_vout->render.i_width -
 630       (rect_dest.right - rect_dest_clipped.right) * p_vout->render.i_width /
 631       (rect_dest.right - rect_dest.left);
 632     rect_src_clipped.top = (rect_dest_clipped.top - rect_dest.top) *
 633       p_vout->render.i_height / (rect_dest.bottom - rect_dest.top);
 634     rect_src_clipped.bottom = p_vout->render.i_height -
 635       (rect_dest.bottom - rect_dest_clipped.bottom) * p_vout->render.i_height /
 636       (rect_dest.bottom - rect_dest.top);
 637
 638 #if 0
 639     msg_Dbg( p_vout, "DirectXUpdateRects image_src_clipped"
 640                      " coords: %i,%i,%i,%i",
 641                      rect_src_clipped.left, rect_src_clipped.top,
 642                      rect_src_clipped.right, rect_src_clipped.bottom );
 643 #endif
 644
 645     /* Signal the size change */
 646     if( !p_vout->p_sys->p_event->b_die )
 647     {
 648         if( p_vout->p_sys->b_using_overlay )
 649         {
 650             DirectXUpdateOverlay( p_vout );
 651         }
 652         else
 653         {
 654             p_vout->p_sys->i_changes |= VOUT_SIZE_CHANGE;
 655         }
 656     }
 657
 658 #undef rect_src
 659 #undef rect_src_clipped
 660 #undef rect_dest
 661 #undef rect_dest_clipped
 662 }
 663
 664 /*****************************************************************************
 665  * DirectXEventProc: This is the window event processing function.
 666  *****************************************************************************
 667  * On Windows, when you create a window you have to attach an event processing
 668  * function to it. The aim of this function is to manage "Queued Messages" and
 669  * "Nonqueued Messages".
 670  * Queued Messages are those picked up and retransmitted by vout_Manage
 671  * (using the GetMessage and DispatchMessage functions).
 672  * Nonqueued Messages are those that Windows will send directly to this
 673  * procedure (like WM_DESTROY, WM_WINDOWPOSCHANGED...)
 674  *****************************************************************************/
 675 static long FAR PASCAL DirectXEventProc( HWND hwnd, UINT message,
 676                                          WPARAM wParam, LPARAM lParam )
 677 {
 678     vout_thread_t *p_vout;
 679
 680     if( message == WM_CREATE )
 681     {
 682         /* Store p_vout for future use */
 683         p_vout = (vout_thread_t *)((CREATESTRUCT *)lParam)->lpCreateParams;
 684         SetWindowLong( hwnd, GWL_USERDATA, (LONG)p_vout );
 685     }
 686     else
 687     {
 688         p_vout = (vout_thread_t *)GetWindowLong( hwnd, GWL_USERDATA );
 689     }
 690
 691     switch( message )
 692     {
 693
 694     case WM_WINDOWPOSCHANGED:
 695         DirectXUpdateRects( p_vout, VLC_TRUE );
 696         return 0;
 697
 698     /* the user wants to close the window */
 699     case WM_CLOSE:
 700     {
 701         playlist_t * p_playlist =
 702             (playlist_t *)vlc_object_find( p_vout, VLC_OBJECT_PLAYLIST,
 703                                            FIND_ANYWHERE );
 704         if( p_playlist == NULL )
 705         {
 706             return 0;
 707         }
 708
 709         playlist_Stop( p_playlist );
 710         vlc_object_release( p_playlist );
 711         return 0;
 712     }
 713
 714     /* the window has been closed so shut down everything now */
 715     case WM_DESTROY:
 716         msg_Dbg( p_vout, "WinProc WM_DESTROY" );
 717         /* just destroy the window */
 718         PostQuitMessage( 0 );
 719         return 0;
 720
 721     case WM_SYSCOMMAND:
 722         switch (wParam)
 723         {
 724             case SC_SCREENSAVE:                     /* catch the screensaver */
 725             case SC_MONITORPOWER:              /* catch the monitor turn-off */
 726                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND" );
 727                 return 0;                  /* this stops them from happening */
 728             case IDM_TOGGLE_ON_TOP:            /* toggle the "on top" status */
 729             {
 730                 vlc_value_t val;
 731                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND: IDM_TOGGLE_ON_TOP");
 732
 733                 /* Get the current value... */
 734                 if( var_Get( p_vout, "directx-on-top", &val ) < 0 )
 735                     return 0;
 736                 /* ...and change it */
 737                 val.b_bool = !val.b_bool;
 738                 var_Set( p_vout, "directx-on-top", val );
 739                 return 0;
 740                 break;
 741             }
 742         }
 743         break;
 744
 745     case WM_ERASEBKGND:
 746         if( !p_vout->p_sys->b_using_overlay )
 747         {
 748             /* We want to eliminate unnecessary background redraws which create
 749              * an annoying flickering */
 750             int i_width, i_height, i_x, i_y;
 751             RECT rect_temp;
 752             GetClipBox( (HDC)wParam, &rect_temp );
 753 #if 0
 754             msg_Dbg( p_vout, "WinProc WM_ERASEBKGND %i,%i,%i,%i",
 755                           rect_temp.left, rect_temp.top,
 756                           rect_temp.right, rect_temp.bottom );
 757 #endif
 758             vout_PlacePicture( p_vout, p_vout->p_sys->i_window_width,
 759                                p_vout->p_sys->i_window_height,
 760                                &i_x, &i_y, &i_width, &i_height );
 761             ExcludeClipRect( (HDC)wParam, i_x, i_y,
 762                              i_x + i_width, i_y + i_height );
 763         }
 764         break;
 765
 766     default:
 767         //msg_Dbg( p_vout, "WinProc WM Default %i", message );
 768         break;
 769     }
 770
 771     return DefWindowProc(hwnd, message, wParam, lParam);
 772 }