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 1.17 2003/05/26 19:26:53 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                     var_Set( p_playlist, "intf-popupmenu", val );
 180                     vlc_object_release( p_playlist );
 181                 }
 182             }
 183             break;
 184
 185         case WM_KEYDOWN:
 186             /* the key events are first processed here. The next
 187              * message processed by this main message loop will be the
 188              * char translation of the key event */
 189             msg_Dbg( p_event, "WM_KEYDOWN" );
 190             switch( msg.wParam )
 191             {
 192             case VK_ESCAPE:
 193                 if( p_event->p_vout->b_fullscreen )
 194                 {
 195                     p_event->p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
 196                 }
 197                 else
 198                 {
 199                     /* exit application */
 200                     p_event->p_vout->p_vlc->b_die = VLC_TRUE;
 201                 }
 202                 break;
 203
 204             case VK_MENU:
 205                 {
 206                     playlist_t *p_playlist =
 207                         vlc_object_find( p_event, VLC_OBJECT_PLAYLIST,
 208                                          FIND_ANYWHERE );
 209                     if( p_playlist != NULL )
 210                     {
 211                         vlc_value_t val;
 212                         var_Set( p_playlist, "intf-popupmenu", val );
 213                         vlc_object_release( p_playlist );
 214                     }
 215                 }
 216                 break;
 217
 218             case VK_LEFT:
 219                 input_Seek( p_event->p_vout, -5,
 220                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 221                 break;
 222             case VK_RIGHT:
 223                 input_Seek( p_event->p_vout, 5,
 224                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 225                 break;
 226             case VK_UP:
 227                 input_Seek( p_event->p_vout, 60,
 228                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 229                 break;
 230             case VK_DOWN:
 231                 input_Seek( p_event->p_vout, -60,
 232                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 233                 break;
 234             case VK_HOME:
 235                 input_Seek( p_event->p_vout, 0,
 236                             INPUT_SEEK_BYTES | INPUT_SEEK_SET );
 237                 break;
 238             case VK_END:
 239                 input_Seek( p_event->p_vout, 0,
 240                             INPUT_SEEK_BYTES | INPUT_SEEK_END );
 241                 break;
 242             case VK_PRIOR:
 243                 input_Seek( p_event->p_vout, 900,
 244                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 245                 break;
 246             case VK_NEXT:
 247                 input_Seek( p_event->p_vout, -900,
 248                             INPUT_SEEK_SECONDS | INPUT_SEEK_CUR );
 249                 break;
 250             case VK_SPACE:
 251                 input_SetStatus( p_event->p_vout, INPUT_STATUS_PAUSE );
 252                 break;
 253             }
 254             TranslateMessage(&msg);
 255             break;
 256
 257         case WM_CHAR:
 258             switch( msg.wParam )
 259             {
 260             case 'q':
 261             case 'Q':
 262                 /* exit application */
 263                 p_event->p_vlc->b_die = VLC_TRUE;
 264                 break;
 265
 266             case 'f':                            /* switch to fullscreen */
 267             case 'F':
 268                 p_event->p_vout->p_sys->i_changes |= VOUT_FULLSCREEN_CHANGE;
 269                 break;
 270
 271             default:
 272                 break;
 273             }
 274
 275         default:
 276             /* Messages we don't handle directly are dispatched to the
 277              * window procedure */
 278             TranslateMessage(&msg);
 279             DispatchMessage(&msg);
 280             break;
 281
 282         } /* End Switch */
 283
 284     } /* End Main loop */
 285
 286     if( msg.message == WM_QUIT )
 287     {
 288         msg_Warn( p_event, "WM_QUIT... should not happen!!" );
 289         p_event->p_vout->p_sys->hwnd = NULL; /* Window already destroyed */
 290     }
 291
 292     msg_Dbg( p_event, "DirectXEventThread terminating" );
 293
 294     /* clear the changes formerly signaled */
 295     p_event->p_vout->p_sys->i_changes = 0;
 296
 297     DirectXCloseWindow( p_event->p_vout );
 298 }
 299
 300
 301 /* following functions are local */
 302
 303 /*****************************************************************************
 304  * DirectXCreateWindow: create a window for the video.
 305  *****************************************************************************
 306  * Before creating a direct draw surface, we need to create a window in which
 307  * the video will be displayed. This window will also allow us to capture the
 308  * events.
 309  *****************************************************************************/
 310 static int DirectXCreateWindow( vout_thread_t *p_vout )
 311 {
 312     HINSTANCE  hInstance;
 313     COLORREF   colorkey;
 314     HDC        hdc;
 315     HMENU      hMenu;
 316     RECT       rect_window;
 317
 318     vlc_value_t val;
 319
 320     msg_Dbg( p_vout, "DirectXCreateWindow" );
 321
 322     /* Get this module's instance */
 323     hInstance = GetModuleHandle(NULL);
 324
 325     /* Create a BRUSH that will be used by Windows to paint the window
 326      * background.
 327      * This window background is important for us as it will be used by the
 328      * graphics card to display the overlay.
 329      * This is why we carefully choose the color for this background, the goal
 330      * being to choose a color which isn't complete black but nearly. We
 331      * obviously don't want to use black as a colorkey for the overlay because
 332      * black is one of the most used color and thus would give us undesirable
 333      * effects */
 334     /* the first step is to find the colorkey we want to use. The difficulty
 335      * comes from the potential dithering (depends on the display depth)
 336      * because we need to know the real RGB value of the chosen colorkey */
 337     hdc = GetDC( NULL );
 338     for( colorkey = 0x0a; colorkey < 0xff /* all shades of red */; colorkey++ )
 339     {
 340         if( colorkey == GetNearestColor( hdc, colorkey ) )
 341         {
 342             break;
 343         }
 344     }
 345     msg_Dbg( p_vout, "background color: %i", colorkey );
 346
 347     /* Create the actual brush */
 348     p_vout->p_sys->hbrush = CreateSolidBrush(colorkey);
 349     p_vout->p_sys->i_rgb_colorkey = (int)colorkey;
 350
 351     /* Get the current size of the display and its colour depth */
 352     p_vout->p_sys->rect_display.right = GetDeviceCaps( hdc, HORZRES );
 353     p_vout->p_sys->rect_display.bottom = GetDeviceCaps( hdc, VERTRES );
 354     p_vout->p_sys->i_display_depth = GetDeviceCaps( hdc, BITSPIXEL );
 355     msg_Dbg( p_vout, "screen dimensions %ix%i colour depth %i",
 356                       p_vout->p_sys->rect_display.right,
 357                       p_vout->p_sys->rect_display.bottom,
 358                       p_vout->p_sys->i_display_depth );
 359
 360     ReleaseDC( NULL, hdc );
 361
 362     /* If an external window was specified, we'll draw in it. */
 363     var_Get( p_vout->p_vlc, "drawable", &val );
 364     p_vout->p_sys->hparent = p_vout->p_sys->hwnd =
 365              val.i_int ?  (void*)(ptrdiff_t) val.i_int : NULL;
 366
 367     if( p_vout->p_sys->hparent )
 368     {
 369         msg_Dbg( p_vout, "using external window %p\n", p_vout->p_sys->hwnd );
 370
 371         /* Set stuff in the window that we can not put directly in
 372          * a class (see below). */
 373         SetClassLong( p_vout->p_sys->hwnd,
 374                       GCL_STYLE, CS_DBLCLKS );
 375         SetClassLong( p_vout->p_sys->hwnd,
 376                       GCL_HBRBACKGROUND, (LONG)p_vout->p_sys->hbrush );
 377         SetClassLong( p_vout->p_sys->hwnd,
 378                       GCL_HCURSOR, (LONG)LoadCursor(NULL, IDC_ARROW) );
 379         /* Store a p_vout pointer into the window local storage (for later
 380          * use in DirectXEventProc). */
 381         SetWindowLong( p_vout->p_sys->hwnd, GWL_USERDATA, (LONG)p_vout );
 382
 383         p_vout->p_sys->pf_wndproc =
 384                (WNDPROC)SetWindowLong( p_vout->p_sys->hwnd,
 385                                        GWL_WNDPROC, (LONG)DirectXEventProc );
 386
 387         /* Blam! Erase everything that might have been there. */
 388         RedrawWindow( p_vout->p_sys->hwnd, NULL, NULL,
 389                       RDW_INVALIDATE | RDW_ERASE );
 390     }
 391     else
 392     {
 393         WNDCLASSEX wc;                            /* window class components */
 394         HICON      vlc_icon = NULL;
 395         char       vlc_path[MAX_PATH+1];
 396
 397         /* Get the Icon from the main app */
 398         vlc_icon = NULL;
 399         if( GetModuleFileName( NULL, vlc_path, MAX_PATH ) )
 400         {
 401             vlc_icon = ExtractIcon( hInstance, vlc_path, 0 );
 402         }
 403
 404         /* Fill in the window class structure */
 405         wc.cbSize        = sizeof(WNDCLASSEX);
 406         wc.style         = CS_DBLCLKS;                   /* style: dbl click */
 407         wc.lpfnWndProc   = (WNDPROC)DirectXEventProc;       /* event handler */
 408         wc.cbClsExtra    = 0;                         /* no extra class data */
 409         wc.cbWndExtra    = 0;                        /* no extra window data */
 410         wc.hInstance     = hInstance;                            /* instance */
 411         wc.hIcon         = vlc_icon;                /* load the vlc big icon */
 412         wc.hCursor       = LoadCursor(NULL, IDC_ARROW);    /* default cursor */
 413         wc.hbrBackground = p_vout->p_sys->hbrush;        /* background color */
 414         wc.lpszMenuName  = NULL;                                  /* no menu */
 415         wc.lpszClassName = "VLC DirectX";             /* use a special class */
 416         wc.hIconSm       = vlc_icon;              /* load the vlc small icon */
 417
 418         /* Register the window class */
 419         if( !RegisterClassEx(&wc) )
 420         {
 421             WNDCLASS wndclass;
 422
 423             /* Free window background brush */
 424             if( p_vout->p_sys->hbrush )
 425             {
 426                 DeleteObject( p_vout->p_sys->hbrush );
 427                 p_vout->p_sys->hbrush = NULL;
 428             }
 429
 430             if( vlc_icon )
 431             {
 432                 DestroyIcon( vlc_icon );
 433             }
 434
 435             /* Check why it failed. If it's because one already exists
 436              * then fine, otherwise return with an error. */
 437             if( !GetClassInfo( hInstance, "VLC DirectX", &wndclass ) )
 438             {
 439                 msg_Err( p_vout, "DirectXCreateWindow RegisterClass FAILED" );
 440                 return VLC_EGENERIC;
 441             }
 442         }
 443
 444         /* When you create a window you give the dimensions you wish it to
 445          * have. Unfortunatly these dimensions will include the borders and
 446          * titlebar. We use the following function to find out the size of
 447          * the window corresponding to the useable surface we want */
 448         rect_window.top    = 10;
 449         rect_window.left   = 10;
 450         rect_window.right  = rect_window.left + p_vout->p_sys->i_window_width;
 451         rect_window.bottom = rect_window.top + p_vout->p_sys->i_window_height;
 452         AdjustWindowRect( &rect_window, WS_OVERLAPPEDWINDOW|WS_SIZEBOX, 0 );
 453
 454         /* Create the window */
 455         p_vout->p_sys->hwnd =
 456             CreateWindow( "VLC DirectX",             /* name of window class */
 457                     VOUT_TITLE " (DirectX Output)", /* window title bar text */
 458                     WS_OVERLAPPEDWINDOW | WS_SIZEBOX,        /* window style */
 459                     CW_USEDEFAULT,                   /* default X coordinate */
 460                     0,                               /* default Y coordinate */
 461                     rect_window.right - rect_window.left,    /* window width */
 462                     rect_window.bottom - rect_window.top,   /* window height */
 463                     NULL,                                /* no parent window */
 464                     NULL,                          /* no menu in this window */
 465                     hInstance,            /* handle of this program instance */
 466                     (LPVOID)p_vout );            /* send p_vout to WM_CREATE */
 467
 468         if( !p_vout->p_sys->hwnd )
 469         {
 470             msg_Warn( p_vout, "DirectXCreateWindow create window FAILED" );
 471             return VLC_EGENERIC;
 472         }
 473     }
 474
 475     /* Append a "Always On Top" entry in the system menu */
 476     hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 477     AppendMenu( hMenu, MF_SEPARATOR, 0, "" );
 478     AppendMenu( hMenu, MF_STRING | MF_UNCHECKED,
 479                        IDM_TOGGLE_ON_TOP, "Always on &Top" );
 480
 481     /* Now display the window */
 482     ShowWindow( p_vout->p_sys->hwnd, SW_SHOW );
 483
 484     return VLC_SUCCESS;
 485 }
 486
 487 /*****************************************************************************
 488  * DirectXCloseWindow: close the window created by DirectXCreateWindow
 489  *****************************************************************************
 490  * This function returns all resources allocated by DirectXCreateWindow.
 491  *****************************************************************************/
 492 static void DirectXCloseWindow( vout_thread_t *p_vout )
 493 {
 494     msg_Dbg( p_vout, "DirectXCloseWindow" );
 495
 496     if( p_vout->p_sys->hwnd && !p_vout->p_sys->hparent )
 497     {
 498         DestroyWindow( p_vout->p_sys->hwnd );
 499     }
 500
 501     p_vout->p_sys->hwnd = NULL;
 502
 503     /* We don't unregister the Window Class because it could lead to race
 504      * conditions and it will be done anyway by the system when the app will
 505      * exit */
 506 }
 507
 508 /*****************************************************************************
 509  * DirectXUpdateRects: update clipping rectangles
 510  *****************************************************************************
 511  * This function is called when the window position or size are changed, and
 512  * its job is to update the source and destination RECTs used to display the
 513  * picture.
 514  *****************************************************************************/
 515 void DirectXUpdateRects( vout_thread_t *p_vout, vlc_bool_t b_force )
 516 {
 517 #define rect_src p_vout->p_sys->rect_src
 518 #define rect_src_clipped p_vout->p_sys->rect_src_clipped
 519 #define rect_dest p_vout->p_sys->rect_dest
 520 #define rect_dest_clipped p_vout->p_sys->rect_dest_clipped
 521
 522     int i_width, i_height, i_x, i_y;
 523
 524     RECT  rect;
 525     POINT point;
 526
 527     /* Retrieve the window size */
 528     GetClientRect( p_vout->p_sys->hwnd, &rect );
 529
 530     /* Retrieve the window position */
 531     point.x = point.y = 0;
 532     ClientToScreen( p_vout->p_sys->hwnd, &point );
 533
 534     /* If nothing changed, we can return */
 535     if( !b_force
 536          && p_vout->p_sys->i_window_width == rect.right
 537          && p_vout->p_sys->i_window_height == rect.bottom
 538          && p_vout->p_sys->i_window_x == point.x
 539          && p_vout->p_sys->i_window_y == point.y )
 540     {
 541         return;
 542     }
 543
 544     /* Update the window position and size */
 545     p_vout->p_sys->i_window_x = point.x;
 546     p_vout->p_sys->i_window_y = point.y;
 547     p_vout->p_sys->i_window_width = rect.right;
 548     p_vout->p_sys->i_window_height = rect.bottom;
 549
 550     vout_PlacePicture( p_vout, rect.right, rect.bottom,
 551                        &i_x, &i_y, &i_width, &i_height );
 552
 553     /* Destination image position and dimensions */
 554     rect_dest.left = point.x + i_x;
 555     rect_dest.right = rect_dest.left + i_width;
 556     rect_dest.top = point.y + i_y;
 557     rect_dest.bottom = rect_dest.top + i_height;
 558
 559
 560     /* UpdateOverlay directdraw function doesn't automatically clip to the
 561      * display size so we need to do it otherwise it will fail */
 562
 563     /* Clip the destination window */
 564     IntersectRect( &rect_dest_clipped,
 565                    &rect_dest,
 566                    &p_vout->p_sys->rect_display );
 567
 568 #if 0
 569     msg_Dbg( p_vout, "DirectXUpdateRects image_dst_clipped coords:"
 570                      " %i,%i,%i,%i",
 571                      rect_dest_clipped.left, rect_dest_clipped.top,
 572                      rect_dest_clipped.right, rect_dest_clipped.bottom );
 573 #endif
 574
 575     /* the 2 following lines are to fix a bug when clicking on the desktop */
 576     if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
 577         (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
 578     {
 579         SetRectEmpty( &rect_src_clipped );
 580         return;
 581     }
 582
 583     /* src image dimensions */
 584     rect_src.left = 0;
 585     rect_src.top = 0;
 586     rect_src.right = p_vout->render.i_width;
 587     rect_src.bottom = p_vout->render.i_height;
 588
 589     /* Clip the source image */
 590     rect_src_clipped.left = (rect_dest_clipped.left - rect_dest.left) *
 591       p_vout->render.i_width / (rect_dest.right - rect_dest.left);
 592     rect_src_clipped.right = p_vout->render.i_width -
 593       (rect_dest.right - rect_dest_clipped.right) * p_vout->render.i_width /
 594       (rect_dest.right - rect_dest.left);
 595     rect_src_clipped.top = (rect_dest_clipped.top - rect_dest.top) *
 596       p_vout->render.i_height / (rect_dest.bottom - rect_dest.top);
 597     rect_src_clipped.bottom = p_vout->render.i_height -
 598       (rect_dest.bottom - rect_dest_clipped.bottom) * p_vout->render.i_height /
 599       (rect_dest.bottom - rect_dest.top);
 600
 601 #if 0
 602     msg_Dbg( p_vout, "DirectXUpdateRects image_src_clipped"
 603                      " coords: %i,%i,%i,%i",
 604                      rect_src_clipped.left, rect_src_clipped.top,
 605                      rect_src_clipped.right, rect_src_clipped.bottom );
 606 #endif
 607
 608     /* Signal the size change */
 609     if( !p_vout->p_sys->p_event->b_die )
 610     {
 611         if( p_vout->p_sys->b_using_overlay )
 612         {
 613             DirectXUpdateOverlay( p_vout );
 614         }
 615         else
 616         {
 617             p_vout->p_sys->i_changes |= VOUT_SIZE_CHANGE;
 618         }
 619     }
 620
 621 #undef rect_src
 622 #undef rect_src_clipped
 623 #undef rect_dest
 624 #undef rect_dest_clipped
 625 }
 626
 627 /*****************************************************************************
 628  * DirectXEventProc: This is the window event processing function.
 629  *****************************************************************************
 630  * On Windows, when you create a window you have to attach an event processing
 631  * function to it. The aim of this function is to manage "Queued Messages" and
 632  * "Nonqueued Messages".
 633  * Queued Messages are those picked up and retransmitted by vout_Manage
 634  * (using the GetMessage and DispatchMessage functions).
 635  * Nonqueued Messages are those that Windows will send directly to this
 636  * procedure (like WM_DESTROY, WM_WINDOWPOSCHANGED...)
 637  *****************************************************************************/
 638 static long FAR PASCAL DirectXEventProc( HWND hwnd, UINT message,
 639                                          WPARAM wParam, LPARAM lParam )
 640 {
 641     vout_thread_t *p_vout;
 642
 643     if( message == WM_CREATE )
 644     {
 645         /* Store p_vout for future use */
 646         p_vout = (vout_thread_t *)((CREATESTRUCT *)lParam)->lpCreateParams;
 647         SetWindowLong( hwnd, GWL_USERDATA, (LONG)p_vout );
 648     }
 649     else
 650     {
 651         p_vout = (vout_thread_t *)GetWindowLong( hwnd, GWL_USERDATA );
 652     }
 653
 654     switch( message )
 655     {
 656
 657     case WM_WINDOWPOSCHANGED:
 658         DirectXUpdateRects( p_vout, VLC_TRUE );
 659         return 0;
 660
 661     /* the user wants to close the window */
 662     case WM_CLOSE:
 663         msg_Dbg( p_vout, "WinProc WM_CLOSE" );
 664         /* exit application */
 665         p_vout->p_vlc->b_die = VLC_TRUE;
 666         return 0;
 667
 668     /* the window has been closed so shut down everything now */
 669     case WM_DESTROY:
 670         msg_Dbg( p_vout, "WinProc WM_DESTROY" );
 671         /* just destroy the window */
 672         PostQuitMessage( 0 );
 673         return 0;
 674
 675     case WM_SYSCOMMAND:
 676         switch (wParam)
 677         {
 678             case SC_SCREENSAVE:                     /* catch the screensaver */
 679             case SC_MONITORPOWER:              /* catch the monitor turn-off */
 680                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND" );
 681                 return 0;                  /* this stops them from happening */
 682             case IDM_TOGGLE_ON_TOP:            /* toggle the "on top" status */
 683             {
 684                 vlc_value_t val;
 685                 msg_Dbg( p_vout, "WinProc WM_SYSCOMMAND: IDM_TOGGLE_ON_TOP");
 686
 687                 /* Get the current value... */
 688                 if( var_Get( p_vout, "directx-on-top", &val ) < 0 )
 689                     return 0;
 690                 /* ...and change it */
 691                 val.b_bool = !val.b_bool;
 692                 var_Set( p_vout, "directx-on-top", val );
 693                 return 0;
 694                 break;
 695             }
 696         }
 697         break;
 698
 699     case WM_ERASEBKGND:
 700         if( !p_vout->p_sys->b_using_overlay )
 701         {
 702             /* We want to eliminate unnecessary background redraws which create
 703              * an annoying flickering */
 704             int i_width, i_height, i_x, i_y;
 705             RECT rect_temp;
 706             GetClipBox( (HDC)wParam, &rect_temp );
 707 #if 0
 708             msg_Dbg( p_vout, "WinProc WM_ERASEBKGND %i,%i,%i,%i",
 709                           rect_temp.left, rect_temp.top,
 710                           rect_temp.right, rect_temp.bottom );
 711 #endif
 712             vout_PlacePicture( p_vout, p_vout->p_sys->i_window_width,
 713                                p_vout->p_sys->i_window_height,
 714                                &i_x, &i_y, &i_width, &i_height );
 715             ExcludeClipRect( (HDC)wParam, i_x, i_y,
 716                              i_x + i_width, i_y + i_height );
 717         }
 718         break;
 719
 720     default:
 721         //msg_Dbg( p_vout, "WinProc WM Default %i", message );
 722         break;
 723     }
 724
 725     return DefWindowProc(hwnd, message, wParam, lParam);
 726 }
 727