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SDL-mirror/src/video/windib/SDL_dibvideo.c
Sam Lantinga 0f030a1802 SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. 
--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401938
2006-07-10 21:04:37 +00:00

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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
#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_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_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) { /* 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 HPALETTE
DIB_CreatePalette(int bpp)
{
/* RJR: March 28, 2000
moved palette creation here from "DIB_VideoInit" */
HPALETTE handle = NULL;
if (bpp <= 8) {
LOGPALETTE *palette;
HDC hdc;
int ncolors;
int i;
ncolors = 1;
for (i = 0; i < bpp; ++i) {
ncolors *= 2;
}
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);
handle = CreatePalette(palette);
SDL_free(palette);
}
return handle;
}
int
DIB_VideoInit(_THIS, SDL_PixelFormat * vformat)
{
#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" */
screen_pal = DIB_CreatePalette(vformat->BitsPerPixel);
}
/* Fill in some window manager capabilities */
this->info.wm_available = 1;
#ifdef _WIN32_WCE
this->hidden->origRotation = -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;
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;
/* Clean up any GL context that may be hanging around */
if (current->flags & SDL_INTERNALOPENGL) {
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_flags = video->flags;
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 (screen_pal != NULL) {
/* RJR: March 28, 2000
delete identity palette if switching from a palettized mode */
DeleteObject(screen_pal);
screen_pal = NULL;
}
if (bpp <= 8) {
/* RJR: March 28, 2000
create identity palette switching to a palettized mode */
screen_pal = DIB_CreatePalette(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_INTERNALOPENGL)) {
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 (bpp <= 8) {
/* 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 (!SDL_windowX && !SDL_windowY) {
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;
AdjustWindowRectEx(&bounds, GetWindowLong(SDL_Window, GWL_STYLE),
(GetMenu(SDL_Window) != NULL), 0);
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_INTERNALOPENGL) {
if (WIN_GL_SetupWindow(this) < 0) {
return (NULL);
}
video->flags |= SDL_INTERNALOPENGL;
}
/* 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);
}
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;
/* Update the display palette */
hdc = GetDC(SDL_Window);
if (screen_pal) {
PALETTEENTRY *entries;
entries = SDL_stack_alloc(PALETTEENTRY, ncolors);
for (i = 0; i < ncolors; ++i) {
entries[i].peRed = colors[i].r;
entries[i].peGreen = colors[i].g;
entries[i].peBlue = colors[i].b;
entries[i].peFlags = PC_NOCOLLAPSE;
}
SetPaletteEntries(screen_pal, firstcolor, ncolors, entries);
SelectPalette(hdc, screen_pal, FALSE);
RealizePalette(hdc);
SDL_stack_free(entries);
}
#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);
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) {
#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_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_FocusPalette(_THIS, int foreground)
{
if (screen_pal != NULL) {
HDC hdc;
hdc = GetDC(SDL_Window);
SelectPalette(hdc, screen_pal, FALSE);
if (RealizePalette(hdc))
InvalidateRect(SDL_Window, NULL, FALSE);
ReleaseDC(SDL_Window, hdc);
}
}
static void
DIB_RealizePalette(_THIS)
{
DIB_FocusPalette(this, 1);
}
static void
DIB_PaletteChanged(_THIS, HWND window)
{
if (window != SDL_Window) {
DIB_FocusPalette(this, 0);
}
}
/* 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
/* vi: set ts=4 sw=4 expandtab: */
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