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SDL_dibvideo.c
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SDL_dibvideo.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2012 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 1
#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_gapidibvideo.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);
static void DIB_GetWinPos(_THIS, int* px, int *py);
static void DIB_SetWinPos(_THIS, int x, int y);
static int DIB_IsWinVisible(_THIS, int recenter);
static int DIB_GetMonitorDPI(_THIS, int* xDpi, int *yDpi);
static int DIB_GetMonitorRect(_THIS, SDL_Rect* rect);
/* 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 ) {
if ( device->hidden->dibInfo ) {
SDL_free( device->hidden->dibInfo );
}
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));
if(device->hidden){
SDL_memset(device->hidden, 0, (sizeof *device->hidden));
device->hidden->dibInfo = (DibInfo *)SDL_malloc((sizeof(DibInfo)));
if(device->hidden->dibInfo == NULL)
{
SDL_free(device->hidden);
device->hidden = NULL;
}
}
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->dibInfo, 0, (sizeof *device->hidden->dibInfo));
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;
device->GetWindowPos = DIB_GetWinPos;
device->SetWindowPos = DIB_SetWinPos;
device->IsWindowVisible = DIB_IsWinVisible;
device->GetMonitorDPI = DIB_GetMonitorDPI;
device->GetMonitorRect = DIB_GetMonitorRect;
/* 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 */
SDL_desktop_mode.dmSize = sizeof(SDL_desktop_mode);
SDL_desktop_mode.dmDriverExtra = 0;
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);
static void DIB_ResizeWindow(_THIS, int width, int height, int prev_width, int prev_height, Uint32 flags)
{
RECT bounds;
int x, y;
#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 ( width != prev_width || height != prev_height ) {
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+width;
bounds.bottom = SDL_windowY+height;
#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;
}
if ( GetParent(SDL_Window) == NULL ) {
SetForegroundWindow(SDL_Window);
}
}
}
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;
Uint32 Rmask, Gmask, Bmask;
prev_w = current->w;
prev_h = current->h;
prev_flags = current->flags;
/*
* Special case for OpenGL windows...since the app needs to call
* SDL_SetVideoMode() in response to resize events to continue to
* function, but WGL handles the GL context details behind the scenes,
* there's no sense in tearing the context down just to rebuild it
* to what it already was...tearing it down sacrifices your GL state
* and uploaded textures. So if we're requesting the same video mode
* attributes just resize the window and return immediately.
*/
if ( SDL_Window &&
((current->flags & ~SDL_ANYFORMAT) == (flags & ~SDL_ANYFORMAT)) &&
(current->format->BitsPerPixel == bpp) &&
(flags & SDL_OPENGL) &&
!(flags & SDL_FULLSCREEN) ) { /* probably not safe for fs */
current->w = width;
current->h = height;
SDL_resizing = 1;
DIB_ResizeWindow(this, width, height, prev_w, prev_h, flags);
SDL_resizing = 0;
return current;
}
/* 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 */
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 && !defined(_WIN32_WCE)
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;
}
}
DIB_ResizeWindow(this, width, height, prev_w, prev_h, flags);
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);