Mercurial > sdl-ios-xcode
view src/video/windib/SDL_dibvideo.c @ 4139:568c9b3c0167 SDL-1.2
* Added configure option --enable-screensaver, to allow enabling the screensaver by default.
* Use XResetScreenSaver() instead of disabling screensaver entirely.
Full discussion summary from Erik on the SDL mailing list:
Current behaviour
=================
SDL changes the user's display power management settings without
permission from the user and without telling the user.
The interface that it uses to do so is DPMSDisable/DPMSEnable, which
should only ever be used by configuration utilities like KControl, never
by normal application programs, let alone by the libraries that they
use. Using an interface that is not at all intended for what SDL tries
to achieve means that it will not work as it should. Firstly, the power
management is completely disabled during the whole lifetime of the SDL
program, not only when it should be. Secondly, it makes SDL
non-reentrant, meaning that things will break when multiple SDL programs
are clients of the same X server simultaneously. Thirdly, no cleanup
mechanism ensures that the setting is restored if the client does not do
that (for example if it crashes).
In addition to that, this interface is broken on xorg,
[http://bugs.freedesktop.org/show_bug.cgi?id=13962], so what SDL tries
to do does not work at all on that implementation of the X Window
System. (The reason that the DPMSEnable works in KControl is that it
calls DPMSSetTimeout immediately after,
[http://websvn.kde.org/tags/KDE/3.5.9/kdebase/kcontrol/energy/energy.cpp?annotate=774532#l343]).
The problems that the current behaviour causes
==============================================
1. Information leak. When the user is away, someone might see what the
user has on the display when the user counts on the screensaver
preventing this. This does not even require physical access to the
workstation, it is enough to see it from a distance.
2. Draining battery. An SDL program that runs on a laptop will quickly
drain the battery while the user is away. The system will soon shut down
and require recharging before being usable again, while it should in
fact have consumed very little energy if the user's settings would have
been obeyed.
3. Wasting energy. Even if battery issues are not considered, energy as
such is wasted.
4. Display wear. The display may be worn out.
The problems that the current behaviour tries to solve
======================================================
1. Preventing screensaver while playing movies.
Many SDL applications are media players. They have reasons to prevent
screensavers from being activated while a movie is being played. When a
user clicks on the play button it can be interpreted as saying "play
this movie, but do not turn off the display while playing it, because I
will watch it even though I do not interact with the system".
2. Preventing screensaver when some input bypasses X.
Sometimes SDL uses input from another source than the X server, so
that the X server is bypassed. This obviously breaks the screensaver
handling. SDL tries to work around that.
3. Preventing screensaver when all input bypasses X.
There is something called Direct Graphics Access mode, where a
program takes control of both the display and the input devices from the
X server. This obviously means that the X server can not handle the
screensaver alone, since screensaver handling depends on input handling.
SDL does not do what it should to help the X server to handle the
screensaver. Nor does SDL take care of screeensaver handling itself. SDL
simply disables the screensaver completely.
How the problems should be solved
=================================
The correct way for an application program to prevent the screensaver
under X is to call XResetScreenSaver. This was recently discovered and
implemented by the mplayer developers,
[http://svn.mplayerhq.hu/mplayer?view=rev&revision=25637]. SDL needs to
wrap this in an API call (SDL_ResetScreenSaver) and implement it for the
other video targets (if they do not have a corresponding call, SDL
should do what it takes on that particular target, for example sending
fake key events).
1. When a movie is played, the player should reset the screensaver when
the animation is advanced to a new frame. The same applies to anything
similar, like slideshows.
2. When the X server is handling input, it must handle all input
(keyboards, mice, gamepads, ...). This is necessary, not only to be able
to handle the screensaver, but also so that it can send the events to
the correct (the currently active) client. If there is an input device
that the X server can not handle for some reason (such as lack of Plug
and Play capability), the program that handles the device as a
workaround must simulate what would happen if the X server would have
handled the device, by calling XResetScreenSaver when input is received
from the device.
3. When the X server is not handling the input, it depends on the
program that does to call XResetScreenSaver whenever an input event
occurs. Alternatively the program must handle the screensaver countdown
internally and call XActivateScreenSaver.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 29 Feb 2008 13:55:44 +0000 |
parents | 8797fa6e2fb2 |
children | 73e7e7f5b5a1 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #define WIN32_LEAN_AND_MEAN #include <windows.h> /* Not yet in the mingw32 cross-compile headers */ #ifndef CDS_FULLSCREEN #define CDS_FULLSCREEN 4 #endif #include "SDL_syswm.h" #include "../SDL_sysvideo.h" #include "../SDL_pixels_c.h" #include "../../events/SDL_sysevents.h" #include "../../events/SDL_events_c.h" #include "SDL_dibvideo.h" #include "../wincommon/SDL_syswm_c.h" #include "../wincommon/SDL_sysmouse_c.h" #include "SDL_dibevents_c.h" #include "../wincommon/SDL_wingl_c.h" #ifdef _WIN32_WCE #ifndef DM_DISPLAYORIENTATION #define DM_DISPLAYORIENTATION 0x00800000L #endif #ifndef DM_DISPLAYQUERYORIENTATION #define DM_DISPLAYQUERYORIENTATION 0x01000000L #endif #ifndef DMDO_0 #define DMDO_0 0 #endif #ifndef DMDO_90 #define DMDO_90 1 #endif #ifndef DMDO_180 #define DMDO_180 2 #endif #ifndef DMDO_270 #define DMDO_270 4 #endif #define NO_GETDIBITS #define NO_GAMMA_SUPPORT #if _WIN32_WCE < 420 #define NO_CHANGEDISPLAYSETTINGS #else #define ChangeDisplaySettings(lpDevMode, dwFlags) ChangeDisplaySettingsEx(NULL, (lpDevMode), 0, (dwFlags), 0) #endif #endif #ifndef WS_MAXIMIZE #define WS_MAXIMIZE 0 #endif #ifndef WS_THICKFRAME #define WS_THICKFRAME 0 #endif #ifndef SWP_NOCOPYBITS #define SWP_NOCOPYBITS 0 #endif #ifndef PC_NOCOLLAPSE #define PC_NOCOLLAPSE 0 #endif #ifdef _WIN32_WCE // defined and used in SDL_sysevents.c extern HINSTANCE aygshell; #endif /* Initialization/Query functions */ static int DIB_VideoInit(_THIS, SDL_PixelFormat *vformat); static SDL_Rect **DIB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); SDL_Surface *DIB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); static int DIB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); static void DIB_CheckGamma(_THIS); void DIB_SwapGamma(_THIS); void DIB_QuitGamma(_THIS); int DIB_SetGammaRamp(_THIS, Uint16 *ramp); int DIB_GetGammaRamp(_THIS, Uint16 *ramp); static void DIB_VideoQuit(_THIS); /* Hardware surface functions */ static int DIB_AllocHWSurface(_THIS, SDL_Surface *surface); static int DIB_LockHWSurface(_THIS, SDL_Surface *surface); static void DIB_UnlockHWSurface(_THIS, SDL_Surface *surface); static void DIB_FreeHWSurface(_THIS, SDL_Surface *surface); /* Windows message handling functions */ static void DIB_GrabStaticColors(HWND window); static void DIB_ReleaseStaticColors(HWND window); static void DIB_Activate(_THIS, BOOL active, BOOL minimized); static void DIB_RealizePalette(_THIS); static void DIB_PaletteChanged(_THIS, HWND window); static void DIB_WinPAINT(_THIS, HDC hdc); /* helper fn */ static int DIB_SussScreenDepth(); /* DIB driver bootstrap functions */ static int DIB_Available(void) { return(1); } static void DIB_DeleteDevice(SDL_VideoDevice *device) { if ( device ) { if ( device->hidden ) { SDL_free(device->hidden); } if ( device->gl_data ) { SDL_free(device->gl_data); } SDL_free(device); } } static SDL_VideoDevice *DIB_CreateDevice(int devindex) { SDL_VideoDevice *device; /* Initialize all variables that we clean on shutdown */ device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); if ( device ) { SDL_memset(device, 0, (sizeof *device)); device->hidden = (struct SDL_PrivateVideoData *) SDL_malloc((sizeof *device->hidden)); device->gl_data = (struct SDL_PrivateGLData *) SDL_malloc((sizeof *device->gl_data)); } if ( (device == NULL) || (device->hidden == NULL) || (device->gl_data == NULL) ) { SDL_OutOfMemory(); DIB_DeleteDevice(device); return(NULL); } SDL_memset(device->hidden, 0, (sizeof *device->hidden)); SDL_memset(device->gl_data, 0, (sizeof *device->gl_data)); /* Set the function pointers */ device->VideoInit = DIB_VideoInit; device->ListModes = DIB_ListModes; device->SetVideoMode = DIB_SetVideoMode; device->UpdateMouse = WIN_UpdateMouse; device->SetColors = DIB_SetColors; device->UpdateRects = NULL; device->VideoQuit = DIB_VideoQuit; device->AllocHWSurface = DIB_AllocHWSurface; device->CheckHWBlit = NULL; device->FillHWRect = NULL; device->SetHWColorKey = NULL; device->SetHWAlpha = NULL; device->LockHWSurface = DIB_LockHWSurface; device->UnlockHWSurface = DIB_UnlockHWSurface; device->FlipHWSurface = NULL; device->FreeHWSurface = DIB_FreeHWSurface; device->SetGammaRamp = DIB_SetGammaRamp; device->GetGammaRamp = DIB_GetGammaRamp; #if SDL_VIDEO_OPENGL device->GL_LoadLibrary = WIN_GL_LoadLibrary; device->GL_GetProcAddress = WIN_GL_GetProcAddress; device->GL_GetAttribute = WIN_GL_GetAttribute; device->GL_MakeCurrent = WIN_GL_MakeCurrent; device->GL_SwapBuffers = WIN_GL_SwapBuffers; #endif device->SetCaption = WIN_SetWMCaption; device->SetIcon = WIN_SetWMIcon; device->IconifyWindow = WIN_IconifyWindow; device->GrabInput = WIN_GrabInput; device->GetWMInfo = WIN_GetWMInfo; device->FreeWMCursor = WIN_FreeWMCursor; device->CreateWMCursor = WIN_CreateWMCursor; device->ShowWMCursor = WIN_ShowWMCursor; device->WarpWMCursor = WIN_WarpWMCursor; device->CheckMouseMode = WIN_CheckMouseMode; device->InitOSKeymap = DIB_InitOSKeymap; device->PumpEvents = DIB_PumpEvents; /* Set up the windows message handling functions */ WIN_Activate = DIB_Activate; WIN_RealizePalette = DIB_RealizePalette; WIN_PaletteChanged = DIB_PaletteChanged; WIN_WinPAINT = DIB_WinPAINT; HandleMessage = DIB_HandleMessage; device->free = DIB_DeleteDevice; /* We're finally ready */ return device; } VideoBootStrap WINDIB_bootstrap = { "windib", "Win95/98/NT/2000/CE GDI", DIB_Available, DIB_CreateDevice }; static int cmpmodes(const void *va, const void *vb) { SDL_Rect *a = *(SDL_Rect **)va; SDL_Rect *b = *(SDL_Rect **)vb; if ( a->w == b->w ) return b->h - a->h; else return b->w - a->w; } static int DIB_AddMode(_THIS, int bpp, int w, int h) { SDL_Rect *mode; int i, index; int next_mode; /* Check to see if we already have this mode */ if ( bpp < 8 || bpp > 32 ) { /* Not supported */ return(0); } index = ((bpp+7)/8)-1; for ( i=0; i<SDL_nummodes[index]; ++i ) { mode = SDL_modelist[index][i]; if ( (mode->w == w) && (mode->h == h) ) { return(0); } } /* Set up the new video mode rectangle */ mode = (SDL_Rect *)SDL_malloc(sizeof *mode); if ( mode == NULL ) { SDL_OutOfMemory(); return(-1); } mode->x = 0; mode->y = 0; mode->w = w; mode->h = h; /* Allocate the new list of modes, and fill in the new mode */ next_mode = SDL_nummodes[index]; SDL_modelist[index] = (SDL_Rect **) SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); if ( SDL_modelist[index] == NULL ) { SDL_OutOfMemory(); SDL_nummodes[index] = 0; SDL_free(mode); return(-1); } SDL_modelist[index][next_mode] = mode; SDL_modelist[index][next_mode+1] = NULL; SDL_nummodes[index]++; return(0); } static void DIB_CreatePalette(_THIS, int bpp) { /* RJR: March 28, 2000 moved palette creation here from "DIB_VideoInit" */ LOGPALETTE *palette; HDC hdc; int ncolors; ncolors = (1 << bpp); palette = (LOGPALETTE *)SDL_malloc(sizeof(*palette)+ ncolors*sizeof(PALETTEENTRY)); palette->palVersion = 0x300; palette->palNumEntries = ncolors; hdc = GetDC(SDL_Window); GetSystemPaletteEntries(hdc, 0, ncolors, palette->palPalEntry); ReleaseDC(SDL_Window, hdc); screen_pal = CreatePalette(palette); screen_logpal = palette; } int DIB_VideoInit(_THIS, SDL_PixelFormat *vformat) { const char *env = NULL; #ifndef NO_CHANGEDISPLAYSETTINGS int i; DEVMODE settings; #endif /* Create the window */ if ( DIB_CreateWindow(this) < 0 ) { return(-1); } #if !SDL_AUDIO_DISABLED DX5_SoundFocus(SDL_Window); #endif /* Determine the screen depth */ vformat->BitsPerPixel = DIB_SussScreenDepth(); switch (vformat->BitsPerPixel) { case 15: vformat->Rmask = 0x00007c00; vformat->Gmask = 0x000003e0; vformat->Bmask = 0x0000001f; vformat->BitsPerPixel = 16; break; case 16: vformat->Rmask = 0x0000f800; vformat->Gmask = 0x000007e0; vformat->Bmask = 0x0000001f; break; case 24: case 32: /* GDI defined as 8-8-8 */ vformat->Rmask = 0x00ff0000; vformat->Gmask = 0x0000ff00; vformat->Bmask = 0x000000ff; break; default: break; } /* See if gamma is supported on this screen */ DIB_CheckGamma(this); #ifndef NO_CHANGEDISPLAYSETTINGS settings.dmSize = sizeof(DEVMODE); settings.dmDriverExtra = 0; #ifdef _WIN32_WCE settings.dmFields = DM_DISPLAYQUERYORIENTATION; this->hidden->supportRotation = ChangeDisplaySettingsEx(NULL, &settings, NULL, CDS_TEST, NULL) == DISP_CHANGE_SUCCESSFUL; #endif /* Query for the desktop resolution */ EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &SDL_desktop_mode); this->info.current_w = SDL_desktop_mode.dmPelsWidth; this->info.current_h = SDL_desktop_mode.dmPelsHeight; /* Query for the list of available video modes */ for ( i=0; EnumDisplaySettings(NULL, i, &settings); ++i ) { DIB_AddMode(this, settings.dmBitsPerPel, settings.dmPelsWidth, settings.dmPelsHeight); #ifdef _WIN32_WCE if( this->hidden->supportRotation ) DIB_AddMode(this, settings.dmBitsPerPel, settings.dmPelsHeight, settings.dmPelsWidth); #endif } /* Sort the mode lists */ for ( i=0; i<NUM_MODELISTS; ++i ) { if ( SDL_nummodes[i] > 0 ) { SDL_qsort(SDL_modelist[i], SDL_nummodes[i], sizeof *SDL_modelist[i], cmpmodes); } } #else // WinCE and fullscreen mode: // We use only vformat->BitsPerPixel that allow SDL to // emulate other bpp (8, 32) and use triple buffer, // because SDL surface conversion is much faster than the WinCE one. // Although it should be tested on devices with graphics accelerator. DIB_AddMode(this, vformat->BitsPerPixel, GetDeviceCaps(GetDC(NULL), HORZRES), GetDeviceCaps(GetDC(NULL), VERTRES)); #endif /* !NO_CHANGEDISPLAYSETTINGS */ /* Grab an identity palette if we are in a palettized mode */ if ( vformat->BitsPerPixel <= 8 ) { /* RJR: March 28, 2000 moved palette creation to "DIB_CreatePalette" */ DIB_CreatePalette(this, vformat->BitsPerPixel); } /* Fill in some window manager capabilities */ this->info.wm_available = 1; #ifdef _WIN32_WCE this->hidden->origRotation = -1; #endif /* Allow environment override of screensaver disable. */ env = SDL_getenv("SDL_VIDEO_ALLOW_SCREENSAVER"); if ( env ) { allow_screensaver = SDL_atoi(env); } else { #ifdef SDL_VIDEO_DISABLE_SCREENSAVER allow_screensaver = 0; #else allow_screensaver = 1; #endif } /* We're done! */ return(0); } /* We support any format at any dimension */ SDL_Rect **DIB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) { if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); } else { return((SDL_Rect **)-1); } } /* Helper fn to work out which screen depth windows is currently using. 15 bit mode is considered 555 format, 16 bit is 565. returns 0 for unknown mode. (Derived from code in sept 1999 Windows Developer Journal http://www.wdj.com/code/archive.html) */ static int DIB_SussScreenDepth() { #ifdef NO_GETDIBITS int depth; HDC hdc; hdc = GetDC(SDL_Window); depth = GetDeviceCaps(hdc, PLANES) * GetDeviceCaps(hdc, BITSPIXEL); ReleaseDC(SDL_Window, hdc); return(depth); #else int depth; int dib_size; LPBITMAPINFOHEADER dib_hdr; HDC hdc; HBITMAP hbm; /* Allocate enough space for a DIB header plus palette (for * 8-bit modes) or bitfields (for 16- and 32-bit modes) */ dib_size = sizeof(BITMAPINFOHEADER) + 256 * sizeof (RGBQUAD); dib_hdr = (LPBITMAPINFOHEADER) SDL_malloc(dib_size); SDL_memset(dib_hdr, 0, dib_size); dib_hdr->biSize = sizeof(BITMAPINFOHEADER); /* Get a device-dependent bitmap that's compatible with the screen. */ hdc = GetDC(NULL); hbm = CreateCompatibleBitmap( hdc, 1, 1 ); /* Convert the DDB to a DIB. We need to call GetDIBits twice: * the first call just fills in the BITMAPINFOHEADER; the * second fills in the bitfields or palette. */ GetDIBits(hdc, hbm, 0, 1, NULL, (LPBITMAPINFO) dib_hdr, DIB_RGB_COLORS); GetDIBits(hdc, hbm, 0, 1, NULL, (LPBITMAPINFO) dib_hdr, DIB_RGB_COLORS); DeleteObject(hbm); ReleaseDC(NULL, hdc); depth = 0; switch( dib_hdr->biBitCount ) { case 8: depth = 8; break; case 24: depth = 24; break; case 32: depth = 32; break; case 16: if( dib_hdr->biCompression == BI_BITFIELDS ) { /* check the red mask */ switch( ((DWORD*)((char*)dib_hdr + dib_hdr->biSize))[0] ) { case 0xf800: depth = 16; break; /* 565 */ case 0x7c00: depth = 15; break; /* 555 */ } } } SDL_free(dib_hdr); return depth; #endif /* NO_GETDIBITS */ } /* Various screen update functions available */ static void DIB_NormalUpdate(_THIS, int numrects, SDL_Rect *rects); SDL_Surface *DIB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags) { SDL_Surface *video; int prev_w, prev_h; Uint32 prev_flags; DWORD style; const DWORD directstyle = (WS_POPUP); const DWORD windowstyle = (WS_OVERLAPPED|WS_CAPTION|WS_SYSMENU|WS_MINIMIZEBOX); const DWORD resizestyle = (WS_THICKFRAME|WS_MAXIMIZEBOX); int binfo_size; BITMAPINFO *binfo; HDC hdc; RECT bounds; int x, y; Uint32 Rmask, Gmask, Bmask; prev_flags = current->flags; /* Clean up any GL context that may be hanging around */ if ( current->flags & SDL_OPENGL ) { WIN_GL_ShutDown(this); } SDL_resizing = 1; /* Recalculate the bitmasks if necessary */ if ( bpp == current->format->BitsPerPixel ) { video = current; } else { switch (bpp) { case 15: case 16: if ( DIB_SussScreenDepth() == 15 ) { /* 5-5-5 */ Rmask = 0x00007c00; Gmask = 0x000003e0; Bmask = 0x0000001f; } else { /* 5-6-5 */ Rmask = 0x0000f800; Gmask = 0x000007e0; Bmask = 0x0000001f; } break; case 24: case 32: /* GDI defined as 8-8-8 */ Rmask = 0x00ff0000; Gmask = 0x0000ff00; Bmask = 0x000000ff; break; default: Rmask = 0x00000000; Gmask = 0x00000000; Bmask = 0x00000000; break; } video = SDL_CreateRGBSurface(SDL_SWSURFACE, 0, 0, bpp, Rmask, Gmask, Bmask, 0); if ( video == NULL ) { SDL_OutOfMemory(); return(NULL); } } /* Fill in part of the video surface */ prev_w = video->w; prev_h = video->h; video->flags = 0; /* Clear flags */ video->w = width; video->h = height; video->pitch = SDL_CalculatePitch(video); /* Small fix for WinCE/Win32 - when activating window SDL_VideoSurface is equal to zero, so activating code is not called properly for fullscreen windows because macros WINDIB_FULLSCREEN uses SDL_VideoSurface */ SDL_VideoSurface = video; #if defined(_WIN32_WCE) if ( flags & SDL_FULLSCREEN ) video->flags |= SDL_FULLSCREEN; #endif #ifndef NO_CHANGEDISPLAYSETTINGS /* Set fullscreen mode if appropriate */ if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { DEVMODE settings; BOOL changed; SDL_memset(&settings, 0, sizeof(DEVMODE)); settings.dmSize = sizeof(DEVMODE); #ifdef _WIN32_WCE // try to rotate screen to fit requested resolution if( this->hidden->supportRotation ) { DWORD rotation; // ask current mode settings.dmFields = DM_DISPLAYORIENTATION; ChangeDisplaySettingsEx(NULL, &settings, NULL, CDS_TEST, NULL); rotation = settings.dmDisplayOrientation; if( (width > GetDeviceCaps(GetDC(NULL), HORZRES)) && (height < GetDeviceCaps(GetDC(NULL), VERTRES))) { switch( rotation ) { case DMDO_0: settings.dmDisplayOrientation = DMDO_90; break; case DMDO_270: settings.dmDisplayOrientation = DMDO_180; break; } if( settings.dmDisplayOrientation != rotation ) { // go to landscape this->hidden->origRotation = rotation; ChangeDisplaySettingsEx(NULL,&settings,NULL,CDS_RESET,NULL); } } if( (width < GetDeviceCaps(GetDC(NULL), HORZRES)) && (height > GetDeviceCaps(GetDC(NULL), VERTRES))) { switch( rotation ) { case DMDO_90: settings.dmDisplayOrientation = DMDO_0; break; case DMDO_180: settings.dmDisplayOrientation = DMDO_270; break; } if( settings.dmDisplayOrientation != rotation ) { // go to portrait this->hidden->origRotation = rotation; ChangeDisplaySettingsEx(NULL,&settings,NULL,CDS_RESET,NULL); } } } #endif #ifndef _WIN32_WCE settings.dmBitsPerPel = video->format->BitsPerPixel; settings.dmPelsWidth = width; settings.dmPelsHeight = height; settings.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL; if ( width <= (int)SDL_desktop_mode.dmPelsWidth && height <= (int)SDL_desktop_mode.dmPelsHeight ) { settings.dmDisplayFrequency = SDL_desktop_mode.dmDisplayFrequency; settings.dmFields |= DM_DISPLAYFREQUENCY; } changed = (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL); if ( ! changed && (settings.dmFields & DM_DISPLAYFREQUENCY) ) { settings.dmFields &= ~DM_DISPLAYFREQUENCY; changed = (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) == DISP_CHANGE_SUCCESSFUL); } #else changed = 1; #endif if ( changed ) { video->flags |= SDL_FULLSCREEN; SDL_fullscreen_mode = settings; } } #endif /* !NO_CHANGEDISPLAYSETTINGS */ /* Reset the palette and create a new one if necessary */ if ( grab_palette ) { DIB_ReleaseStaticColors(SDL_Window); grab_palette = FALSE; } if ( screen_pal != NULL ) { /* RJR: March 28, 2000 delete identity palette if switching from a palettized mode */ DeleteObject(screen_pal); screen_pal = NULL; } if ( screen_logpal != NULL ) { SDL_free(screen_logpal); screen_logpal = NULL; } if ( bpp <= 8 ) { /* RJR: March 28, 2000 create identity palette switching to a palettized mode */ DIB_CreatePalette(this, bpp); } style = GetWindowLong(SDL_Window, GWL_STYLE); style &= ~(resizestyle|WS_MAXIMIZE); if ( (video->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { style &= ~windowstyle; style |= directstyle; } else { #ifndef NO_CHANGEDISPLAYSETTINGS if ( (prev_flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) { ChangeDisplaySettings(NULL, 0); } #endif if ( flags & SDL_NOFRAME ) { style &= ~windowstyle; style |= directstyle; video->flags |= SDL_NOFRAME; } else { style &= ~directstyle; style |= windowstyle; if ( flags & SDL_RESIZABLE ) { style |= resizestyle; video->flags |= SDL_RESIZABLE; } } #if WS_MAXIMIZE if (IsZoomed(SDL_Window)) style |= WS_MAXIMIZE; #endif } /* DJM: Don't piss of anyone who has setup his own window */ if ( !SDL_windowid ) SetWindowLong(SDL_Window, GWL_STYLE, style); /* Delete the old bitmap if necessary */ if ( screen_bmp != NULL ) { DeleteObject(screen_bmp); } if ( ! (flags & SDL_OPENGL) ) { BOOL is16bitmode = (video->format->BytesPerPixel == 2); /* Suss out the bitmap info header */ binfo_size = sizeof(*binfo); if( is16bitmode ) { /* 16bit modes, palette area used for rgb bitmasks */ binfo_size += 3*sizeof(DWORD); } else if ( video->format->palette ) { binfo_size += video->format->palette->ncolors * sizeof(RGBQUAD); } binfo = (BITMAPINFO *)SDL_malloc(binfo_size); if ( ! binfo ) { if ( video != current ) { SDL_FreeSurface(video); } SDL_OutOfMemory(); return(NULL); } binfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); binfo->bmiHeader.biWidth = video->w; binfo->bmiHeader.biHeight = -video->h; /* -ve for topdown bitmap */ binfo->bmiHeader.biPlanes = 1; binfo->bmiHeader.biSizeImage = video->h * video->pitch; binfo->bmiHeader.biXPelsPerMeter = 0; binfo->bmiHeader.biYPelsPerMeter = 0; binfo->bmiHeader.biClrUsed = 0; binfo->bmiHeader.biClrImportant = 0; binfo->bmiHeader.biBitCount = video->format->BitsPerPixel; if ( is16bitmode ) { /* BI_BITFIELDS tells CreateDIBSection about the rgb masks in the palette */ binfo->bmiHeader.biCompression = BI_BITFIELDS; ((Uint32*)binfo->bmiColors)[0] = video->format->Rmask; ((Uint32*)binfo->bmiColors)[1] = video->format->Gmask; ((Uint32*)binfo->bmiColors)[2] = video->format->Bmask; } else { binfo->bmiHeader.biCompression = BI_RGB; /* BI_BITFIELDS for 565 vs 555 */ if ( video->format->palette ) { SDL_memset(binfo->bmiColors, 0, video->format->palette->ncolors*sizeof(RGBQUAD)); } } /* Create the offscreen bitmap buffer */ hdc = GetDC(SDL_Window); screen_bmp = CreateDIBSection(hdc, binfo, DIB_RGB_COLORS, (void **)(&video->pixels), NULL, 0); ReleaseDC(SDL_Window, hdc); SDL_free(binfo); if ( screen_bmp == NULL ) { if ( video != current ) { SDL_FreeSurface(video); } SDL_SetError("Couldn't create DIB section"); return(NULL); } this->UpdateRects = DIB_NormalUpdate; /* Set video surface flags */ if ( screen_pal && (flags & (SDL_FULLSCREEN|SDL_HWPALETTE)) ) { grab_palette = TRUE; } if ( screen_pal ) { /* BitBlt() maps colors for us */ video->flags |= SDL_HWPALETTE; } } #ifndef _WIN32_WCE /* Resize the window */ if ( !SDL_windowid && !IsZoomed(SDL_Window) ) { #else if ( !SDL_windowid ) { #endif HWND top; UINT swp_flags; const char *window = NULL; const char *center = NULL; if ( video->w != prev_w || video->h != prev_h ) { window = SDL_getenv("SDL_VIDEO_WINDOW_POS"); center = SDL_getenv("SDL_VIDEO_CENTERED"); if ( window ) { if ( SDL_sscanf(window, "%d,%d", &x, &y) == 2 ) { SDL_windowX = x; SDL_windowY = y; } if ( SDL_strcmp(window, "center") == 0 ) { center = window; } } } swp_flags = (SWP_NOCOPYBITS | SWP_SHOWWINDOW); bounds.left = SDL_windowX; bounds.top = SDL_windowY; bounds.right = SDL_windowX+video->w; bounds.bottom = SDL_windowY+video->h; #ifndef _WIN32_WCE AdjustWindowRectEx(&bounds, GetWindowLong(SDL_Window, GWL_STYLE), (GetMenu(SDL_Window) != NULL), 0); #else // The bMenu parameter must be FALSE; menu bars are not supported AdjustWindowRectEx(&bounds, GetWindowLong(SDL_Window, GWL_STYLE), 0, 0); #endif width = bounds.right-bounds.left; height = bounds.bottom-bounds.top; if ( (flags & SDL_FULLSCREEN) ) { x = (GetSystemMetrics(SM_CXSCREEN)-width)/2; y = (GetSystemMetrics(SM_CYSCREEN)-height)/2; } else if ( center ) { x = (GetSystemMetrics(SM_CXSCREEN)-width)/2; y = (GetSystemMetrics(SM_CYSCREEN)-height)/2; } else if ( SDL_windowX || SDL_windowY || window ) { x = bounds.left; y = bounds.top; } else { x = y = -1; swp_flags |= SWP_NOMOVE; } if ( flags & SDL_FULLSCREEN ) { top = HWND_TOPMOST; } else { top = HWND_NOTOPMOST; } SetWindowPos(SDL_Window, top, x, y, width, height, swp_flags); if ( !(flags & SDL_FULLSCREEN) ) { SDL_windowX = SDL_bounds.left; SDL_windowY = SDL_bounds.top; } SetForegroundWindow(SDL_Window); } SDL_resizing = 0; /* Set up for OpenGL */ if ( flags & SDL_OPENGL ) { if ( WIN_GL_SetupWindow(this) < 0 ) { return(NULL); } video->flags |= SDL_OPENGL; } /* JC 14 Mar 2006 Flush the message loop or this can cause big problems later Especially if the user decides to use dialog boxes or assert()! */ WIN_FlushMessageQueue(); /* We're live! */ return(video); } /* We don't actually allow hardware surfaces in the DIB driver */ static int DIB_AllocHWSurface(_THIS, SDL_Surface *surface) { return(-1); } static void DIB_FreeHWSurface(_THIS, SDL_Surface *surface) { return; } static int DIB_LockHWSurface(_THIS, SDL_Surface *surface) { return(0); } static void DIB_UnlockHWSurface(_THIS, SDL_Surface *surface) { return; } static void DIB_NormalUpdate(_THIS, int numrects, SDL_Rect *rects) { HDC hdc, mdc; int i; hdc = GetDC(SDL_Window); if ( screen_pal ) { SelectPalette(hdc, screen_pal, FALSE); } mdc = CreateCompatibleDC(hdc); SelectObject(mdc, screen_bmp); for ( i=0; i<numrects; ++i ) { BitBlt(hdc, rects[i].x, rects[i].y, rects[i].w, rects[i].h, mdc, rects[i].x, rects[i].y, SRCCOPY); } DeleteDC(mdc); ReleaseDC(SDL_Window, hdc); } static int FindPaletteIndex(LOGPALETTE *pal, BYTE r, BYTE g, BYTE b) { PALETTEENTRY *entry; int i; int nentries = pal->palNumEntries; for ( i = 0; i < nentries; ++i ) { entry = &pal->palPalEntry[i]; if ( entry->peRed == r && entry->peGreen == g && entry->peBlue == b ) { return i; } } return -1; } static BOOL CheckPaletteEntry(LOGPALETTE *pal, int index, BYTE r, BYTE g, BYTE b) { PALETTEENTRY *entry; BOOL moved = 0; entry = &pal->palPalEntry[index]; if ( entry->peRed != r || entry->peGreen != g || entry->peBlue != b ) { int found = FindPaletteIndex(pal, r, g, b); if ( found >= 0 ) { pal->palPalEntry[found] = *entry; } entry->peRed = r; entry->peGreen = g; entry->peBlue = b; moved = 1; } entry->peFlags = 0; return moved; } int DIB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) { #if !defined(_WIN32_WCE) || (_WIN32_WCE >= 400) HDC hdc, mdc; RGBQUAD *pal; #else HDC hdc; #endif int i; int moved_entries = 0; /* Update the display palette */ hdc = GetDC(SDL_Window); if ( screen_pal ) { PALETTEENTRY *entry; for ( i=0; i<ncolors; ++i ) { entry = &screen_logpal->palPalEntry[firstcolor+i]; entry->peRed = colors[i].r; entry->peGreen = colors[i].g; entry->peBlue = colors[i].b; entry->peFlags = PC_NOCOLLAPSE; } #ifdef SYSPAL_NOSTATIC /* Check to make sure black and white are in position */ if ( GetSystemPaletteUse(hdc) != SYSPAL_NOSTATIC256 ) { moved_entries += CheckPaletteEntry(screen_logpal, 0, 0x00, 0x00, 0x00); moved_entries += CheckPaletteEntry(screen_logpal, screen_logpal->palNumEntries-1, 0xff, 0xff, 0xff); } /* FIXME: If we don't have full access to the palette, what we really want to do is find the 236 most diverse colors in the desired palette, set those entries (10-245) and then map everything into the new system palette. */ #endif #ifndef _WIN32_WCE /* Copy the entries into the system palette */ UnrealizeObject(screen_pal); #endif SetPaletteEntries(screen_pal, 0, screen_logpal->palNumEntries, screen_logpal->palPalEntry); SelectPalette(hdc, screen_pal, FALSE); RealizePalette(hdc); } #if !defined(_WIN32_WCE) || (_WIN32_WCE >= 400) /* Copy palette colors into DIB palette */ pal = SDL_stack_alloc(RGBQUAD, ncolors); for ( i=0; i<ncolors; ++i ) { pal[i].rgbRed = colors[i].r; pal[i].rgbGreen = colors[i].g; pal[i].rgbBlue = colors[i].b; pal[i].rgbReserved = 0; } /* Set the DIB palette and update the display */ mdc = CreateCompatibleDC(hdc); SelectObject(mdc, screen_bmp); SetDIBColorTable(mdc, firstcolor, ncolors, pal); if ( moved_entries || !grab_palette ) { BitBlt(hdc, 0, 0, this->screen->w, this->screen->h, mdc, 0, 0, SRCCOPY); } DeleteDC(mdc); SDL_stack_free(pal); #endif ReleaseDC(SDL_Window, hdc); return(1); } static void DIB_CheckGamma(_THIS) { #ifndef NO_GAMMA_SUPPORT HDC hdc; WORD ramp[3*256]; /* If we fail to get gamma, disable gamma control */ hdc = GetDC(SDL_Window); if ( ! GetDeviceGammaRamp(hdc, ramp) ) { this->GetGammaRamp = NULL; this->SetGammaRamp = NULL; } ReleaseDC(SDL_Window, hdc); #endif /* !NO_GAMMA_SUPPORT */ } void DIB_SwapGamma(_THIS) { #ifndef NO_GAMMA_SUPPORT HDC hdc; if ( gamma_saved ) { hdc = GetDC(SDL_Window); if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) { /* About to leave active state, restore gamma */ SetDeviceGammaRamp(hdc, gamma_saved); } else { /* About to enter active state, set game gamma */ GetDeviceGammaRamp(hdc, gamma_saved); SetDeviceGammaRamp(hdc, this->gamma); } ReleaseDC(SDL_Window, hdc); } #endif /* !NO_GAMMA_SUPPORT */ } void DIB_QuitGamma(_THIS) { #ifndef NO_GAMMA_SUPPORT if ( gamma_saved ) { /* Restore the original gamma if necessary */ if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) { HDC hdc; hdc = GetDC(SDL_Window); SetDeviceGammaRamp(hdc, gamma_saved); ReleaseDC(SDL_Window, hdc); } /* Free the saved gamma memory */ SDL_free(gamma_saved); gamma_saved = 0; } #endif /* !NO_GAMMA_SUPPORT */ } int DIB_SetGammaRamp(_THIS, Uint16 *ramp) { #ifdef NO_GAMMA_SUPPORT SDL_SetError("SDL compiled without gamma ramp support"); return -1; #else HDC hdc; BOOL succeeded; /* Set the ramp for the display */ if ( ! gamma_saved ) { gamma_saved = (WORD *)SDL_malloc(3*256*sizeof(*gamma_saved)); if ( ! gamma_saved ) { SDL_OutOfMemory(); return -1; } hdc = GetDC(SDL_Window); GetDeviceGammaRamp(hdc, gamma_saved); ReleaseDC(SDL_Window, hdc); } if ( SDL_GetAppState() & SDL_APPINPUTFOCUS ) { hdc = GetDC(SDL_Window); succeeded = SetDeviceGammaRamp(hdc, ramp); ReleaseDC(SDL_Window, hdc); } else { succeeded = TRUE; } return succeeded ? 0 : -1; #endif /* !NO_GAMMA_SUPPORT */ } int DIB_GetGammaRamp(_THIS, Uint16 *ramp) { #ifdef NO_GAMMA_SUPPORT SDL_SetError("SDL compiled without gamma ramp support"); return -1; #else HDC hdc; BOOL succeeded; /* Get the ramp from the display */ hdc = GetDC(SDL_Window); succeeded = GetDeviceGammaRamp(hdc, ramp); ReleaseDC(SDL_Window, hdc); return succeeded ? 0 : -1; #endif /* !NO_GAMMA_SUPPORT */ } void DIB_VideoQuit(_THIS) { int i, j; /* Destroy the window and everything associated with it */ if ( SDL_Window ) { /* Delete the screen bitmap (also frees screen->pixels) */ if ( this->screen ) { if ( grab_palette ) { DIB_ReleaseStaticColors(SDL_Window); } #ifndef NO_CHANGEDISPLAYSETTINGS if ( this->screen->flags & SDL_FULLSCREEN ) { ChangeDisplaySettings(NULL, 0); ShowWindow(SDL_Window, SW_HIDE); } #endif if ( this->screen->flags & SDL_OPENGL ) { WIN_GL_ShutDown(this); } this->screen->pixels = NULL; } if ( screen_pal != NULL ) { DeleteObject(screen_pal); screen_pal = NULL; } if ( screen_logpal != NULL ) { SDL_free(screen_logpal); screen_logpal = NULL; } if ( screen_bmp ) { DeleteObject(screen_bmp); screen_bmp = NULL; } if ( screen_icn ) { DestroyIcon(screen_icn); screen_icn = NULL; } DIB_QuitGamma(this); DIB_DestroyWindow(this); SDL_Window = NULL; #if defined(_WIN32_WCE) // Unload wince aygshell library to prevent leak if( aygshell ) { FreeLibrary(aygshell); aygshell = NULL; } #endif } for ( i=0; i < SDL_arraysize(SDL_modelist); ++i ) { if ( !SDL_modelist[i] ) { continue; } for ( j=0; SDL_modelist[i][j]; ++j ) { SDL_free(SDL_modelist[i][j]); } SDL_free(SDL_modelist[i]); SDL_modelist[i] = NULL; SDL_nummodes[i] = 0; } } /* Exported for the windows message loop only */ static void DIB_GrabStaticColors(HWND window) { #ifdef SYSPAL_NOSTATIC HDC hdc; hdc = GetDC(window); SetSystemPaletteUse(hdc, SYSPAL_NOSTATIC256); if ( GetSystemPaletteUse(hdc) != SYSPAL_NOSTATIC256 ) { SetSystemPaletteUse(hdc, SYSPAL_NOSTATIC); } ReleaseDC(window, hdc); #endif } static void DIB_ReleaseStaticColors(HWND window) { #ifdef SYSPAL_NOSTATIC HDC hdc; hdc = GetDC(window); SetSystemPaletteUse(hdc, SYSPAL_STATIC); ReleaseDC(window, hdc); #endif } static void DIB_Activate(_THIS, BOOL active, BOOL minimized) { if ( grab_palette ) { if ( !active ) { DIB_ReleaseStaticColors(SDL_Window); DIB_RealizePalette(this); } else if ( !minimized ) { DIB_GrabStaticColors(SDL_Window); DIB_RealizePalette(this); } } } static void DIB_RealizePalette(_THIS) { if ( screen_pal != NULL ) { HDC hdc; hdc = GetDC(SDL_Window); #ifndef _WIN32_WCE UnrealizeObject(screen_pal); #endif SelectPalette(hdc, screen_pal, FALSE); if ( RealizePalette(hdc) ) { InvalidateRect(SDL_Window, NULL, FALSE); } ReleaseDC(SDL_Window, hdc); } } static void DIB_PaletteChanged(_THIS, HWND window) { if ( window != SDL_Window ) { DIB_RealizePalette(this); } } /* Exported for the windows message loop only */ static void DIB_WinPAINT(_THIS, HDC hdc) { HDC mdc; if ( screen_pal ) { SelectPalette(hdc, screen_pal, FALSE); } mdc = CreateCompatibleDC(hdc); SelectObject(mdc, screen_bmp); BitBlt(hdc, 0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h, mdc, 0, 0, SRCCOPY); DeleteDC(mdc); } /* Stub in case DirectX isn't available */ #if !SDL_AUDIO_DRIVER_DSOUND void DX5_SoundFocus(HWND hwnd) { return; } #endif