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SDL_x11video.c
1571 lines (1411 loc) · 44.5 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2012 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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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
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* X11 based SDL video driver implementation.
Note: This implementation does not currently need X11 thread locking,
since the event thread uses a separate X connection and any
additional locking necessary is handled internally. However,
if full locking is neccessary, take a look at XInitThreads().
*/
#include <unistd.h>
#include <sys/ioctl.h>
#ifdef MTRR_SUPPORT
#include <asm/mtrr.h>
#include <sys/fcntl.h>
#endif
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#include "SDL_endian.h"
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#include "SDL_timer.h"
#include "SDL_thread.h"
#include "SDL_video.h"
#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_x11video.h"
#include "SDL_x11wm_c.h"
#include "SDL_x11mouse_c.h"
#include "SDL_x11events_c.h"
#include "SDL_x11modes_c.h"
#include "SDL_x11image_c.h"
#include "SDL_x11yuv_c.h"
#include "SDL_x11gl_c.h"
#include "SDL_x11gamma_c.h"
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#include "../blank_cursor.h"
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#ifdef X_HAVE_UTF8_STRING
#include <locale.h>
#endif
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/* Initialization/Query functions */
static int X11_VideoInit(_THIS, SDL_PixelFormat *vformat);
static SDL_Surface *X11_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
static int X11_ToggleFullScreen(_THIS, int on);
static void X11_UpdateMouse(_THIS);
static int X11_SetColors(_THIS, int firstcolor, int ncolors,
SDL_Color *colors);
static int X11_SetGammaRamp(_THIS, Uint16 *ramp);
static void X11_VideoQuit(_THIS);
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/* X11 driver bootstrap functions */
static int X11_Available(void)
{
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Display *display = NULL;
if ( SDL_X11_LoadSymbols() ) {
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display = XOpenDisplay(NULL);
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if ( display != NULL ) {
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XCloseDisplay(display);
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}
SDL_X11_UnloadSymbols();
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}
return(display != NULL);
}
static void X11_DeleteDevice(SDL_VideoDevice *device)
{
if ( device ) {
if ( device->hidden ) {
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SDL_free(device->hidden);
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}
if ( device->gl_data ) {
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SDL_free(device->gl_data);
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}
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SDL_free(device);
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SDL_X11_UnloadSymbols();
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}
}
static SDL_VideoDevice *X11_CreateDevice(int devindex)
{
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SDL_VideoDevice *device = NULL;
if ( SDL_X11_LoadSymbols() ) {
/* Initialize all variables that we clean on shutdown */
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device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
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if ( device ) {
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SDL_memset(device, 0, (sizeof *device));
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device->hidden = (struct SDL_PrivateVideoData *)
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SDL_malloc((sizeof *device->hidden));
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device->gl_data = (struct SDL_PrivateGLData *)
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SDL_malloc((sizeof *device->gl_data));
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}
if ( (device == NULL) || (device->hidden == NULL) ||
(device->gl_data == NULL) ) {
SDL_OutOfMemory();
X11_DeleteDevice(device); /* calls SDL_X11_UnloadSymbols(). */
return(0);
}
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SDL_memset(device->hidden, 0, (sizeof *device->hidden));
SDL_memset(device->gl_data, 0, (sizeof *device->gl_data));
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#if SDL_VIDEO_OPENGL_GLX
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device->gl_data->swap_interval = -1;
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#endif
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/* Set the driver flags */
device->handles_any_size = 1;
/* Set the function pointers */
device->VideoInit = X11_VideoInit;
device->ListModes = X11_ListModes;
device->SetVideoMode = X11_SetVideoMode;
device->ToggleFullScreen = X11_ToggleFullScreen;
device->UpdateMouse = X11_UpdateMouse;
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#if SDL_VIDEO_DRIVER_X11_XV
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device->CreateYUVOverlay = X11_CreateYUVOverlay;
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#endif
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device->SetColors = X11_SetColors;
device->UpdateRects = NULL;
device->VideoQuit = X11_VideoQuit;
device->AllocHWSurface = X11_AllocHWSurface;
device->CheckHWBlit = NULL;
device->FillHWRect = NULL;
device->SetHWColorKey = NULL;
device->SetHWAlpha = NULL;
device->LockHWSurface = X11_LockHWSurface;
device->UnlockHWSurface = X11_UnlockHWSurface;
device->FlipHWSurface = X11_FlipHWSurface;
device->FreeHWSurface = X11_FreeHWSurface;
device->SetGamma = X11_SetVidModeGamma;
device->GetGamma = X11_GetVidModeGamma;
device->SetGammaRamp = X11_SetGammaRamp;
device->GetGammaRamp = NULL;
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#if SDL_VIDEO_OPENGL_GLX
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device->GL_LoadLibrary = X11_GL_LoadLibrary;
device->GL_GetProcAddress = X11_GL_GetProcAddress;
device->GL_GetAttribute = X11_GL_GetAttribute;
device->GL_MakeCurrent = X11_GL_MakeCurrent;
device->GL_SwapBuffers = X11_GL_SwapBuffers;
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#endif
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device->SetCaption = X11_SetCaption;
device->SetIcon = X11_SetIcon;
device->IconifyWindow = X11_IconifyWindow;
device->GrabInput = X11_GrabInput;
device->GetWMInfo = X11_GetWMInfo;
device->FreeWMCursor = X11_FreeWMCursor;
device->CreateWMCursor = X11_CreateWMCursor;
device->ShowWMCursor = X11_ShowWMCursor;
device->WarpWMCursor = X11_WarpWMCursor;
device->CheckMouseMode = X11_CheckMouseMode;
device->InitOSKeymap = X11_InitOSKeymap;
device->PumpEvents = X11_PumpEvents;
device->free = X11_DeleteDevice;
}
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return device;
}
VideoBootStrap X11_bootstrap = {
"x11", "X Window System",
X11_Available, X11_CreateDevice
};
/* Normal X11 error handler routine */
static int (*X_handler)(Display *, XErrorEvent *) = NULL;
static int x_errhandler(Display *d, XErrorEvent *e)
{
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#if SDL_VIDEO_DRIVER_X11_VIDMODE
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extern int vm_error;
#endif
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#if SDL_VIDEO_DRIVER_X11_DGAMOUSE
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extern int dga_error;
#endif
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#if SDL_VIDEO_DRIVER_X11_VIDMODE
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/* VidMode errors are non-fatal. :) */
/* Are the errors offset by one from the error base?
e.g. the error base is 143, the code is 148, and the
actual error is XF86VidModeExtensionDisabled (4) ?
*/
if ( (vm_error >= 0) &&
(((e->error_code == BadRequest)&&(e->request_code == vm_error)) ||
((e->error_code > vm_error) &&
(e->error_code <= (vm_error+XF86VidModeNumberErrors)))) ) {
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#ifdef X11_DEBUG
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{ char errmsg[1024];
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XGetErrorText(d, e->error_code, errmsg, sizeof(errmsg));
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printf("VidMode error: %s\n", errmsg);
}
#endif
return(0);
}
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#endif /* SDL_VIDEO_DRIVER_X11_VIDMODE */
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#if SDL_VIDEO_DRIVER_X11_DGAMOUSE
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/* DGA errors can be non-fatal. :) */
if ( (dga_error >= 0) &&
((e->error_code > dga_error) &&
(e->error_code <= (dga_error+XF86DGANumberErrors))) ) {
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#ifdef X11_DEBUG
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{ char errmsg[1024];
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XGetErrorText(d, e->error_code, errmsg, sizeof(errmsg));
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printf("DGA error: %s\n", errmsg);
}
#endif
return(0);
}
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#endif /* SDL_VIDEO_DRIVER_X11_DGAMOUSE */
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return(X_handler(d,e));
}
/* X11 I/O error handler routine */
static int (*XIO_handler)(Display *) = NULL;
static int xio_errhandler(Display *d)
{
/* Ack! Lost X11 connection! */
/* We will crash if we try to clean up our display */
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if ( SDL_VideoSurface && current_video->hidden->Ximage ) {
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SDL_VideoSurface->pixels = NULL;
}
current_video->hidden->X11_Display = NULL;
/* Continue with the standard X11 error handler */
return(XIO_handler(d));
}
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static int (*Xext_handler)(Display *, _Xconst char *, _Xconst char *) = NULL;
static int xext_errhandler(Display *d, _Xconst char *ext, _Xconst char *reason)
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{
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#ifdef X11_DEBUG
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printf("Xext error inside SDL (may be harmless):\n");
printf(" Extension \"%s\" %s on display \"%s\".\n",
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ext, reason, XDisplayString(d));
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#endif
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if (SDL_strcmp(reason, "missing") == 0) {
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/*
* Since the query itself, elsewhere, can handle a missing extension
* and the default behaviour in Xlib is to write to stderr, which
* generates unnecessary bug reports, we just ignore these.
*/
return 0;
}
/* Everything else goes to the default handler... */
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return Xext_handler(d, ext, reason);
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}
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/* Find out what class name we should use */
static char *get_classname(char *classname, int maxlen)
{
char *spot;
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#if defined(__LINUX__) || defined(__FREEBSD__)
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char procfile[1024];
char linkfile[1024];
int linksize;
#endif
/* First allow environment variable override */
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spot = SDL_getenv("SDL_VIDEO_X11_WMCLASS");
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if ( spot ) {
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SDL_strlcpy(classname, spot, maxlen);
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return classname;
}
/* Next look at the application's executable name */
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#if defined(__LINUX__) || defined(__FREEBSD__)
#if defined(__LINUX__)
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SDL_snprintf(procfile, SDL_arraysize(procfile), "/proc/%d/exe", getpid());
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#elif defined(__FREEBSD__)
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SDL_snprintf(procfile, SDL_arraysize(procfile), "/proc/%d/file", getpid());
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#else
#error Where can we find the executable name?
#endif
linksize = readlink(procfile, linkfile, sizeof(linkfile)-1);
if ( linksize > 0 ) {
linkfile[linksize] = '\0';
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spot = SDL_strrchr(linkfile, '/');
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if ( spot ) {
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SDL_strlcpy(classname, spot+1, maxlen);
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} else {
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SDL_strlcpy(classname, linkfile, maxlen);
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}
return classname;
}
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#endif /* __LINUX__ */
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/* Finally use the default we've used forever */
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SDL_strlcpy(classname, "SDL_App", maxlen);
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return classname;
}
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/* Create auxiliary (toplevel) windows with the current visual */
static void create_aux_windows(_THIS)
{
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int x = 0, y = 0;
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char classname[1024];
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XSetWindowAttributes xattr;
XWMHints *hints;
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unsigned long app_event_mask;
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int def_vis = (SDL_Visual == DefaultVisual(SDL_Display, SDL_Screen));
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/* Look up some useful Atoms */
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WM_DELETE_WINDOW = XInternAtom(SDL_Display, "WM_DELETE_WINDOW", False);
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/* Don't create any extra windows if we are being managed */
if ( SDL_windowid ) {
FSwindow = 0;
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WMwindow = SDL_strtol(SDL_windowid, NULL, 0);
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return;
}
if(FSwindow)
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XDestroyWindow(SDL_Display, FSwindow);
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#if SDL_VIDEO_DRIVER_X11_XINERAMA
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if ( use_xinerama ) {
x = xinerama_info.x_org;
y = xinerama_info.y_org;
}
#endif
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xattr.override_redirect = True;
xattr.background_pixel = def_vis ? BlackPixel(SDL_Display, SDL_Screen) : 0;
xattr.border_pixel = 0;
xattr.colormap = SDL_XColorMap;
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FSwindow = XCreateWindow(SDL_Display, SDL_Root,
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x, y, 32, 32, 0,
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this->hidden->depth, InputOutput, SDL_Visual,
CWOverrideRedirect | CWBackPixel | CWBorderPixel
| CWColormap,
&xattr);
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XSelectInput(SDL_Display, FSwindow, StructureNotifyMask);
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/* Tell KDE to keep the fullscreen window on top */
{
XEvent ev;
long mask;
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SDL_memset(&ev, 0, sizeof(ev));
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ev.xclient.type = ClientMessage;
ev.xclient.window = SDL_Root;
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ev.xclient.message_type = XInternAtom(SDL_Display,
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"KWM_KEEP_ON_TOP", False);
ev.xclient.format = 32;
ev.xclient.data.l[0] = FSwindow;
ev.xclient.data.l[1] = CurrentTime;
mask = SubstructureRedirectMask;
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XSendEvent(SDL_Display, SDL_Root, False, mask, &ev);
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}
hints = NULL;
if(WMwindow) {
/* All window attributes must survive the recreation */
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hints = XGetWMHints(SDL_Display, WMwindow);
XDestroyWindow(SDL_Display, WMwindow);
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}
/* Create the window for windowed management */
/* (reusing the xattr structure above) */
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WMwindow = XCreateWindow(SDL_Display, SDL_Root,
x, y, 32, 32, 0,
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this->hidden->depth, InputOutput, SDL_Visual,
CWBackPixel | CWBorderPixel | CWColormap,
&xattr);
/* Set the input hints so we get keyboard input */
if(!hints) {
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hints = XAllocWMHints();
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hints->input = True;
hints->flags = InputHint;
}
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XSetWMHints(SDL_Display, WMwindow, hints);
XFree(hints);
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X11_SetCaptionNoLock(this, this->wm_title, this->wm_icon);
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app_event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
| PropertyChangeMask | StructureNotifyMask | KeymapStateMask;
XSelectInput(SDL_Display, WMwindow, app_event_mask);
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/* Set the class hints so we can get an icon (AfterStep) */
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get_classname(classname, sizeof(classname));
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{
XClassHint *classhints;
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classhints = XAllocClassHint();
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if(classhints != NULL) {
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classhints->res_name = classname;
classhints->res_class = classname;
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XSetClassHint(SDL_Display, WMwindow, classhints);
XFree(classhints);
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}
}
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{
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pid_t pid = getpid();
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char hostname[256];
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if (pid > 0 && gethostname(hostname, sizeof(hostname)) > -1) {
Atom _NET_WM_PID = XInternAtom(SDL_Display, "_NET_WM_PID", False);
Atom WM_CLIENT_MACHINE = XInternAtom(SDL_Display, "WM_CLIENT_MACHINE", False);
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hostname[sizeof(hostname)-1] = '\0';
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XChangeProperty(SDL_Display, WMwindow, _NET_WM_PID, XA_CARDINAL, 32,
PropModeReplace, (unsigned char *)&pid, 1);
XChangeProperty(SDL_Display, WMwindow, WM_CLIENT_MACHINE, XA_STRING, 8,
PropModeReplace, (unsigned char *)hostname, SDL_strlen(hostname));
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}
}
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/* Setup the communication with the IM server */
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/* create_aux_windows may be called several times against the same
Display. We should reuse the SDL_IM if one has been opened for
the Display, so we should not simply reset SDL_IM here. */
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#ifdef X_HAVE_UTF8_STRING
if (SDL_X11_HAVE_UTF8) {
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/* Discard obsolete resources if any. */
if (SDL_IM != NULL && SDL_Display != XDisplayOfIM(SDL_IM)) {
/* Just a double check. I don't think this
code is ever executed. */
SDL_SetError("display has changed while an IM is kept");
if (SDL_IC) {
XUnsetICFocus(SDL_IC);
XDestroyIC(SDL_IC);
SDL_IC = NULL;
}
XCloseIM(SDL_IM);
SDL_IM = NULL;
}
/* Open an input method. */
if (SDL_IM == NULL) {
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char *old_locale = NULL, *old_modifiers = NULL;
const char *p;
size_t n;
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/* I'm not comfortable to do locale setup
here. However, we need C library locale
(and xlib modifiers) to be set based on the
user's preference to use XIM, and many
existing game programs doesn't take care of
users' locale preferences, so someone other
than the game program should do it.
Moreover, ones say that some game programs
heavily rely on the C locale behaviour,
e.g., strcol()'s, and we can't change the C
library locale. Given the situation, I
couldn't find better place to do the
job... */
/* Save the current (application program's)
locale settings. */
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p = setlocale(LC_ALL, NULL);
if ( p ) {
n = SDL_strlen(p)+1;
old_locale = SDL_stack_alloc(char, n);
if ( old_locale ) {
SDL_strlcpy(old_locale, p, n);
}
}
p = XSetLocaleModifiers(NULL);
if ( p ) {
n = SDL_strlen(p)+1;
old_modifiers = SDL_stack_alloc(char, n);
if ( old_modifiers ) {
SDL_strlcpy(old_modifiers, p, n);
}
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}
/* Fetch the user's preferences and open the
input method with them. */
setlocale(LC_ALL, "");
XSetLocaleModifiers("");
SDL_IM = XOpenIM(SDL_Display, NULL, classname, classname);
/* Restore the application's locale settings
so that we don't break the application's
expected behaviour. */
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if ( old_locale ) {
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/* We need to restore the C library
locale first, since the
interpretation of the X modifier
may depend on it. */
setlocale(LC_ALL, old_locale);
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SDL_stack_free(old_locale);
}
if ( old_modifiers ) {
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XSetLocaleModifiers(old_modifiers);
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SDL_stack_free(old_modifiers);
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}
}
/* Create a new input context for the new window just created. */
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if (SDL_IM == NULL) {
SDL_SetError("no input method could be opened");
} else {
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if (SDL_IC != NULL) {
/* Discard the old IC before creating new one. */
XUnsetICFocus(SDL_IC);
XDestroyIC(SDL_IC);
}
/* Theoretically we should check the current IM supports
PreeditNothing+StatusNothing style (i.e., root window method)
before creating the IC. However, it is the bottom line method,
and we supports any other options. If the IM didn't support
root window method, the following call fails, and SDL falls
back to pre-XIM keyboard handling. */
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SDL_IC = pXCreateIC(SDL_IM,
XNClientWindow, WMwindow,
XNFocusWindow, WMwindow,
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XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
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XNResourceName, classname,
XNResourceClass, classname,
NULL);
if (SDL_IC == NULL) {
SDL_SetError("no input context could be created");
XCloseIM(SDL_IM);
SDL_IM = NULL;
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} else {
/* We need to receive X events that an IM wants and to pass
them to the IM through XFilterEvent. The set of events may
vary depending on the IM implementation and the options
specified through various routes. Although unlikely, the
xlib specification allows IM to change the event requirement
with its own circumstances, it is safe to call SelectInput
whenever we re-create an IC. */
unsigned long mask = 0;
char *ret = pXGetICValues(SDL_IC, XNFilterEvents, &mask, NULL);
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if (ret != NULL) {
XUnsetICFocus(SDL_IC);
XDestroyIC(SDL_IC);
SDL_IC = NULL;
SDL_SetError("no input context could be created");
XCloseIM(SDL_IM);
SDL_IM = NULL;
} else {
XSelectInput(SDL_Display, WMwindow, app_event_mask | mask);
XSetICFocus(SDL_IC);
}
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}
}
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}
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#endif
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/* Allow the window to be deleted by the window manager */
XSetWMProtocols(SDL_Display, WMwindow, &WM_DELETE_WINDOW, 1);
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}
static int X11_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
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const char *env;
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char *display;
int i;
/* Open the X11 display */
display = NULL; /* Get it from DISPLAY environment variable */
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if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) ||
(SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) {
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local_X11 = 1;
} else {
local_X11 = 0;
}
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SDL_Display = XOpenDisplay(display);
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#if defined(__osf__) && defined(SDL_VIDEO_DRIVER_X11_DYNAMIC)
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/* On Tru64 if linking without -lX11, it fails and you get following message.
* Xlib: connection to ":0.0" refused by server
* Xlib: XDM authorization key matches an existing client!
*
* It succeeds if retrying 1 second later
* or if running xhost +localhost on shell.
*
*/
if ( SDL_Display == NULL ) {
SDL_Delay(1000);
602
SDL_Display = XOpenDisplay(display);
603
604
}
#endif
605
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609
if ( SDL_Display == NULL ) {
SDL_SetError("Couldn't open X11 display");
return(-1);
}
#ifdef X11_DEBUG
610
XSynchronize(SDL_Display, True);
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613
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615
616
#endif
/* Create an alternate X display for graphics updates -- allows us
to do graphics updates in a separate thread from event handling.
Thread-safe X11 doesn't seem to exist.
*/
617
GFX_Display = XOpenDisplay(display);
618
if ( GFX_Display == NULL ) {
619
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XCloseDisplay(SDL_Display);
SDL_Display = NULL;
621
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623
624
625
SDL_SetError("Couldn't open X11 display");
return(-1);
}
/* Set the normal X error handler */
626
X_handler = XSetErrorHandler(x_errhandler);
627
628
/* Set the error handler if we lose the X display */
629
XIO_handler = XSetIOErrorHandler(xio_errhandler);
630
631
/* Set the X extension error handler */
632
Xext_handler = XSetExtensionErrorHandler(xext_errhandler);
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637
638
/* use default screen (from $DISPLAY) */
SDL_Screen = DefaultScreen(SDL_Display);
#ifndef NO_SHARED_MEMORY
/* Check for MIT shared memory extension */
639
use_mitshm = 0;
640
if ( local_X11 ) {
641
use_mitshm = XShmQueryExtension(SDL_Display);
642
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645
}
#endif /* NO_SHARED_MEMORY */
/* Get the available video modes */
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if(X11_GetVideoModes(this) < 0) {
XCloseDisplay(GFX_Display);
GFX_Display = NULL;
XCloseDisplay(SDL_Display);
SDL_Display = NULL;
651
return -1;
652
}
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655
656
657
/* Determine the current screen size */
this->info.current_w = DisplayWidth(SDL_Display, SDL_Screen);
this->info.current_h = DisplayHeight(SDL_Display, SDL_Screen);
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/* Determine the default screen depth:
Use the default visual (or at least one with the same depth) */
SDL_DisplayColormap = DefaultColormap(SDL_Display, SDL_Screen);
for(i = 0; i < this->hidden->nvisuals; i++)
if(this->hidden->visuals[i].depth == DefaultDepth(SDL_Display,
SDL_Screen))
break;
if(i == this->hidden->nvisuals) {
/* default visual was useless, take the deepest one instead */
i = 0;
}
SDL_Visual = this->hidden->visuals[i].visual;
if ( SDL_Visual == DefaultVisual(SDL_Display, SDL_Screen) ) {
SDL_XColorMap = SDL_DisplayColormap;
} else {
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SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
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SDL_Visual, AllocNone);
}
this->hidden->depth = this->hidden->visuals[i].depth;
vformat->BitsPerPixel = this->hidden->visuals[i].bpp;
if ( vformat->BitsPerPixel > 8 ) {
vformat->Rmask = SDL_Visual->red_mask;
vformat->Gmask = SDL_Visual->green_mask;
vformat->Bmask = SDL_Visual->blue_mask;
}
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if ( this->hidden->depth == 32 ) {
vformat->Amask = (0xFFFFFFFF & ~(vformat->Rmask|vformat->Gmask|vformat->Bmask));
}
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X11_SaveVidModeGamma(this);
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689
/* Allow environment override of screensaver disable. */
env = SDL_getenv("SDL_VIDEO_ALLOW_SCREENSAVER");
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if ( env ) {
allow_screensaver = SDL_atoi(env);
} else {
#ifdef SDL_VIDEO_DISABLE_SCREENSAVER
allow_screensaver = 0;
#else
allow_screensaver = 1;
#endif
}
700
/* See if we have been passed a window to use */
701
SDL_windowid = SDL_getenv("SDL_WINDOWID");
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/* Create the fullscreen and managed windows */
create_aux_windows(this);
/* Create the blank cursor */
SDL_BlankCursor = this->CreateWMCursor(this, blank_cdata, blank_cmask,
BLANK_CWIDTH, BLANK_CHEIGHT,
BLANK_CHOTX, BLANK_CHOTY);
/* Fill in some window manager capabilities */
this->info.wm_available = 1;
/* We're done! */
715
XFlush(SDL_Display);
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729
return(0);
}
static void X11_DestroyWindow(_THIS, SDL_Surface *screen)
{
/* Clean up OpenGL */
if ( screen ) {
screen->flags &= ~(SDL_OPENGL|SDL_OPENGLBLIT);
}
X11_GL_Shutdown(this);
if ( ! SDL_windowid ) {
/* Hide the managed window */
if ( WMwindow ) {
730
XUnmapWindow(SDL_Display, WMwindow);
731
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733
734
735
736
737
738
}
if ( screen && (screen->flags & SDL_FULLSCREEN) ) {
screen->flags &= ~SDL_FULLSCREEN;
X11_LeaveFullScreen(this);
}
/* Destroy the output window */
if ( SDL_Window ) {
739
XDestroyWindow(SDL_Display, SDL_Window);
740
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742
743
744
745
746
747
748
}
/* Free the colormap entries */
if ( SDL_XPixels ) {
int numcolors;
unsigned long pixel;
numcolors = SDL_Visual->map_entries;
for ( pixel=0; pixel<numcolors; ++pixel ) {
while ( SDL_XPixels[pixel] > 0 ) {
749
XFreeColors(GFX_Display,
750
751
752
753
SDL_DisplayColormap,&pixel,1,0);
--SDL_XPixels[pixel];
}
}
754
SDL_free(SDL_XPixels);
755
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757
758
759
SDL_XPixels = NULL;
}
/* Free the graphics context */
if ( SDL_GC ) {
760
XFreeGC(SDL_Display, SDL_GC);
761
762
763
764
765
SDL_GC = 0;
}
}
}
766
767
static SDL_bool X11_WindowPosition(_THIS, int *x, int *y, int w, int h)
{
768
769
const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
const char *center = SDL_getenv("SDL_VIDEO_CENTERED");
770
if ( window ) {
771
if ( SDL_sscanf(window, "%d,%d", x, y) == 2 ) {
772
773
return SDL_TRUE;
}
774
if ( SDL_strcmp(window, "center") == 0 ) {
775
776
777
778
779
780
781
782
783
784
785
center = window;
}
}
if ( center ) {
*x = (DisplayWidth(SDL_Display, SDL_Screen) - w)/2;
*y = (DisplayHeight(SDL_Display, SDL_Screen) - h)/2;
return SDL_TRUE;
}
return SDL_FALSE;
}
786
787
788
789
static void X11_SetSizeHints(_THIS, int w, int h, Uint32 flags)
{
XSizeHints *hints;
790
hints = XAllocSizeHints();
791
if ( hints ) {
792
if (!(flags & SDL_RESIZABLE)) {
793
794
hints->min_width = hints->max_width = w;
hints->min_height = hints->max_height = h;
795
hints->flags = PMaxSize | PMinSize;
796
797
798
799
800
801
802
}
if ( flags & SDL_FULLSCREEN ) {
hints->x = 0;
hints->y = 0;
hints->flags |= USPosition;
} else
/* Center it, if desired */
803
if ( X11_WindowPosition(this, &hints->x, &hints->y, w, h) ) {
804
hints->flags |= USPosition;
805
806
807
808
809
/* Hints must be set before moving the window, otherwise an
unwanted ConfigureNotify event will be issued */
XSetWMNormalHints(SDL_Display, WMwindow, hints);
810
XMoveWindow(SDL_Display, WMwindow, hints->x, hints->y);
811
812
/* Flush the resize event so we don't catch it later */
813
XSync(SDL_Display, True);
814
}
815
816
XSetWMNormalHints(SDL_Display, WMwindow, hints);
XFree(hints);
817
818
819
820
821
822
823
824
825
826
827
}
/* Respect the window caption style */
if ( flags & SDL_NOFRAME ) {
SDL_bool set;
Atom WM_HINTS;
/* We haven't modified the window manager hints yet */
set = SDL_FALSE;
/* First try to set MWM hints */
828
WM_HINTS = XInternAtom(SDL_Display, "_MOTIF_WM_HINTS", True);
829
830
831
832
833
834
835
836
837
838
if ( WM_HINTS != None ) {
/* Hints used by Motif compliant window managers */
struct {
unsigned long flags;
unsigned long functions;
unsigned long decorations;
long input_mode;
unsigned long status;
} MWMHints = { (1L << 1), 0, 0, 0, 0 };
839
XChangeProperty(SDL_Display, WMwindow,
840
841
842
843
844
845
846
WM_HINTS, WM_HINTS, 32,
PropModeReplace,
(unsigned char *)&MWMHints,
sizeof(MWMHints)/sizeof(long));
set = SDL_TRUE;
}
/* Now try to set KWM hints */
847
WM_HINTS = XInternAtom(SDL_Display, "KWM_WIN_DECORATION", True);
848
849
850
if ( WM_HINTS != None ) {
long KWMHints = 0;
851
XChangeProperty(SDL_Display, WMwindow,
852
853
854
855
856
857
858
WM_HINTS, WM_HINTS, 32,
PropModeReplace,
(unsigned char *)&KWMHints,
sizeof(KWMHints)/sizeof(long));
set = SDL_TRUE;
}
/* Now try to set GNOME hints */
859
WM_HINTS = XInternAtom(SDL_Display, "_WIN_HINTS", True);
860
861
862
if ( WM_HINTS != None ) {
long GNOMEHints = 0;
863
XChangeProperty(SDL_Display, WMwindow,
864
865
866
867
868
869
870
871
WM_HINTS, WM_HINTS, 32,
PropModeReplace,
(unsigned char *)&GNOMEHints,
sizeof(GNOMEHints)/sizeof(long));
set = SDL_TRUE;
}
/* Finally set the transient hints if necessary */
if ( ! set ) {
872
XSetTransientForHint(SDL_Display, WMwindow, SDL_Root);
873
874
875
876
877
878
879
880
881
}
} else {
SDL_bool set;
Atom WM_HINTS;
/* We haven't modified the window manager hints yet */
set = SDL_FALSE;
/* First try to unset MWM hints */
882
WM_HINTS = XInternAtom(SDL_Display, "_MOTIF_WM_HINTS", True);
883
if ( WM_HINTS != None ) {
884
XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
885
886
887
set = SDL_TRUE;
}
/* Now try to unset KWM hints */
888
WM_HINTS = XInternAtom(SDL_Display, "KWM_WIN_DECORATION", True);
889
if ( WM_HINTS != None ) {
890
XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
891
892
893
set = SDL_TRUE;
}
/* Now try to unset GNOME hints */
894
WM_HINTS = XInternAtom(SDL_Display, "_WIN_HINTS", True);
895
if ( WM_HINTS != None ) {
896
XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
897
898
899
900
set = SDL_TRUE;
}
/* Finally unset the transient hints if necessary */
if ( ! set ) {
901
XDeleteProperty(SDL_Display, WMwindow, XA_WM_TRANSIENT_FOR);
902
903
904
905
906
907
908
909
910
911
}
}
}
static int X11_CreateWindow(_THIS, SDL_Surface *screen,
int w, int h, int bpp, Uint32 flags)
{
int i, depth;
Visual *vis;
int vis_change;
912
Uint32 Amask;
913
914
915
916
/* If a window is already present, destroy it and start fresh */
if ( SDL_Window ) {
X11_DestroyWindow(this, screen);
917
switch_waiting = 0; /* Prevent jump back to now-meaningless state. */
918
919
920
921
}
/* See if we have been given a window id */
if ( SDL_windowid ) {
922
SDL_Window = SDL_strtol(SDL_windowid, NULL, 0);
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
} else {
SDL_Window = 0;
}
/* find out which visual we are going to use */
if ( flags & SDL_OPENGL ) {
XVisualInfo *vi;
vi = X11_GL_GetVisual(this);
if( !vi ) {
return -1;
}
vis = vi->visual;
depth = vi->depth;
} else if ( SDL_windowid ) {
XWindowAttributes a;
940
XGetWindowAttributes(SDL_Display, SDL_Window, &a);
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
vis = a.visual;
depth = a.depth;
} else {
for ( i = 0; i < this->hidden->nvisuals; i++ ) {
if ( this->hidden->visuals[i].bpp == bpp )
break;
}
if ( i == this->hidden->nvisuals ) {
SDL_SetError("No matching visual for requested depth");
return -1; /* should never happen */
}
vis = this->hidden->visuals[i].visual;
depth = this->hidden->visuals[i].depth;
}
#ifdef X11_DEBUG
printf("Choosing %s visual at %d bpp - %d colormap entries\n", vis->class == PseudoColor ? "PseudoColor" : (vis->class == TrueColor ? "TrueColor" : (vis->class == DirectColor ? "DirectColor" : "Unknown")), depth, vis->map_entries);
#endif
vis_change = (vis != SDL_Visual);
SDL_Visual = vis;
this->hidden->depth = depth;
/* Allocate the new pixel format for this video mode */
963
964
965
966
967
if ( this->hidden->depth == 32 ) {
Amask = (0xFFFFFFFF & ~(vis->red_mask|vis->green_mask|vis->blue_mask));
} else {
Amask = 0;
}
968
if ( ! SDL_ReallocFormat(screen, bpp,
969
vis->red_mask, vis->green_mask, vis->blue_mask, Amask) ) {
970
return -1;
972
973
974
/* Create the appropriate colormap */
if ( SDL_XColorMap != SDL_DisplayColormap ) {
975
XFreeColormap(SDL_Display, SDL_XColorMap);
976
977
978
979
980
981
}
if ( SDL_Visual->class == PseudoColor ) {
int ncolors;
/* Allocate the pixel flags */
ncolors = SDL_Visual->map_entries;
982
SDL_XPixels = SDL_malloc(ncolors * sizeof(int));
983
984
985
986
if(SDL_XPixels == NULL) {
SDL_OutOfMemory();
return -1;
}
987
SDL_memset(SDL_XPixels, 0, ncolors * sizeof(*SDL_XPixels));
988
989
990
991
992
993
994
/* always allocate a private colormap on non-default visuals */
if ( SDL_Visual != DefaultVisual(SDL_Display, SDL_Screen) ) {
flags |= SDL_HWPALETTE;
}
if ( flags & SDL_HWPALETTE ) {
screen->flags |= SDL_HWPALETTE;
995
SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
996
997
998
999
1000
SDL_Visual, AllocAll);
} else {
SDL_XColorMap = SDL_DisplayColormap;
}
} else if ( SDL_Visual->class == DirectColor ) {