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SDL_x11video.c
1458 lines (1310 loc) · 46.8 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 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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/* Initialization/Query functions */
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static int X11_VideoInit(_THIS);
static SDL_Surface *X11_SetVideoMode(_THIS, SDL_Surface * current,
const SDL_DisplayMode * mode,
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 */
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static int
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X11_Available(void)
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{
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Display *display = NULL;
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if (SDL_X11_LoadSymbols()) {
display = XOpenDisplay(NULL);
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if (display != NULL) {
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XCloseDisplay(display);
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}
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SDL_X11_UnloadSymbols();
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}
return (display != NULL);
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}
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static void
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X11_DeleteDevice(SDL_VideoDevice * device)
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{
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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);
SDL_X11_UnloadSymbols();
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}
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}
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static SDL_VideoDevice *
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X11_CreateDevice(int devindex)
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{
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SDL_VideoDevice *device = NULL;
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if (SDL_X11_LoadSymbols()) {
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/* 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)) {
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SDL_OutOfMemory();
X11_DeleteDevice(device); /* calls SDL_X11_UnloadSymbols(). */
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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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/* Set the driver flags */
device->handles_any_size = 1;
/* Set the function pointers */
device->VideoInit = X11_VideoInit;
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;
}
return device;
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}
VideoBootStrap X11_bootstrap = {
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"x11", "X Window System",
X11_Available, X11_CreateDevice
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};
/* Normal X11 error handler routine */
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static int (*X_handler) (Display *, XErrorEvent *) = NULL;
static int
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x_errhandler(Display * d, XErrorEvent * e)
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{
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#if SDL_VIDEO_DRIVER_X11_VIDMODE
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extern int vm_error;
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#endif
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#if SDL_VIDEO_DRIVER_X11_DGAMOUSE
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extern int dga_error;
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#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));
printf("VidMode error: %s\n", errmsg);
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}
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#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));
printf("DGA error: %s\n", errmsg);
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}
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#endif
return (0);
}
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#endif /* SDL_VIDEO_DRIVER_X11_DGAMOUSE */
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return (X_handler(d, e));
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}
/* X11 I/O error handler routine */
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static int (*XIO_handler) (Display *) = NULL;
static int
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xio_errhandler(Display * d)
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{
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/* Ack! Lost X11 connection! */
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/* We will crash if we try to clean up our display */
if (current_video->hidden->Ximage) {
SDL_VideoSurface->pixels = NULL;
}
current_video->hidden->X11_Display = NULL;
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/* Continue with the standard X11 error handler */
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return (XIO_handler(d));
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}
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static int (*Xext_handler) (Display *, _Xconst char *, _Xconst char *) = NULL;
static int
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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",
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 */
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static char *
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get_classname(char *classname, int maxlen)
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{
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char *spot;
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#if defined(__LINUX__) || defined(__FREEBSD__)
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char procfile[1024];
char linkfile[1024];
int linksize;
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#endif
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/* 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;
}
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/* 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
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linksize = readlink(procfile, linkfile, sizeof(linkfile) - 1);
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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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}
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/* Create auxiliary (toplevel) windows with the current visual */
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static void
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create_aux_windows(_THIS)
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{
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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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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 */
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if (SDL_windowid) {
FSwindow = 0;
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WMwindow = SDL_strtol(SDL_windowid, NULL, 0);
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return;
}
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if (FSwindow)
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XDestroyWindow(SDL_Display, FSwindow);
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#if SDL_VIDEO_DRIVER_X11_VIDMODE
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if (use_xinerama) {
x = xinerama[this->current_display].x_org;
y = xinerama[this->current_display].y_org;
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}
#endif
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xattr.override_redirect = True;
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xattr.background_pixel =
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def_vis ? BlackPixel(SDL_Display, SDL_Screen) : 0;
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xattr.border_pixel = 0;
xattr.colormap = SDL_XColorMap;
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FSwindow = XCreateWindow(SDL_Display, SDL_Root,
x, y, 32, 32, 0,
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 */
{
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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,
"KWM_KEEP_ON_TOP", False);
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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;
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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,
this->hidden->depth, InputOutput, SDL_Visual,
CWBackPixel | CWBorderPixel | CWColormap,
&xattr);
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/* Set the input hints so we get keyboard input */
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if (!hints) {
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hints = XAllocWMHints();
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hints->input = True;
hints->flags = InputHint;
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}
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XSetWMHints(SDL_Display, WMwindow, hints);
XFree(hints);
X11_SetCaptionNoLock(this, SDL_CurrentWindow.wm_title,
SDL_CurrentWindow.wm_icon);
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XSelectInput(SDL_Display, WMwindow,
FocusChangeMask | KeyPressMask | KeyReleaseMask
| PropertyChangeMask | StructureNotifyMask |
KeymapStateMask);
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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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{
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XClassHint *classhints;
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classhints = XAllocClassHint();
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if (classhints != NULL) {
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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/* Setup the communication with the IM server */
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SDL_IM = NULL;
SDL_IC = NULL;
#ifdef X_HAVE_UTF8_STRING
if (SDL_X11_HAVE_UTF8) {
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SDL_IM = XOpenIM(SDL_Display, NULL, classname, classname);
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if (SDL_IM == NULL) {
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SDL_SetError("no input method could be opened");
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} else {
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SDL_IC = pXCreateIC(SDL_IM,
XNClientWindow, WMwindow,
XNFocusWindow, WMwindow,
XNInputStyle,
XIMPreeditNothing | XIMStatusNothing,
XNResourceName, classname,
XNResourceClass, classname, NULL);
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if (SDL_IC == NULL) {
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SDL_SetError("no input context could be created");
XCloseIM(SDL_IM);
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SDL_IM = NULL;
}
}
}
#endif
/* Allow the window to be deleted by the window manager */
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XSetWMProtocols(SDL_Display, WMwindow, &WM_DELETE_WINDOW, 1);
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}
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static int
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X11_VideoInit(_THIS)
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{
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char *display;
int i;
SDL_DisplayMode desktop_mode;
/* 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) {
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SDL_Delay(1000);
SDL_Display = XOpenDisplay(display);
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}
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#endif
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if (SDL_Display == NULL) {
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SDL_SetError("Couldn't open X11 display");
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return (-1);
}
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#ifdef X11_DEBUG
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XSynchronize(SDL_Display, True);
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#endif
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/* 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.
*/
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GFX_Display = XOpenDisplay(display);
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if (GFX_Display == NULL) {
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SDL_SetError("Couldn't open X11 display");
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return (-1);
}
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/* Set the normal X error handler */
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X_handler = XSetErrorHandler(x_errhandler);
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/* Set the error handler if we lose the X display */
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XIO_handler = XSetIOErrorHandler(xio_errhandler);
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/* Set the X extension error handler */
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Xext_handler = XSetExtensionErrorHandler(xext_errhandler);
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/* use default screen (from $DISPLAY) */
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SDL_Screen = DefaultScreen(SDL_Display);
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#ifndef NO_SHARED_MEMORY
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/* Check for MIT shared memory extension */
use_mitshm = 0;
if (local_X11) {
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use_mitshm = XShmQueryExtension(SDL_Display);
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}
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#endif /* NO_SHARED_MEMORY */
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/* Get the available visuals */
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if (X11_GetVisuals(this) < 0)
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return -1;
/* Determine the default screen mode:
Use the default visual (or at least one with the same depth) */
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SDL_DisplayColormap = DefaultColormap(SDL_Display, SDL_Screen);
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for (i = 0; i < this->hidden->nvisuals; i++)
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if (this->hidden->visuals[i].depth == DefaultDepth(SDL_Display,
SDL_Screen))
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break;
if (i == this->hidden->nvisuals) {
/* default visual was useless, take the deepest one instead */
i = 0;
}
SDL_Visual = this->hidden->visuals[i].visual;
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if (SDL_Visual == DefaultVisual(SDL_Display, SDL_Screen)) {
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SDL_XColorMap = SDL_DisplayColormap;
} else {
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SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
SDL_Visual, AllocNone);
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}
desktop_mode.format =
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X11_VisualToFormat(this->hidden->visuals[i].visual,
this->hidden->visuals[i].depth,
this->hidden->visuals[i].bpp);
desktop_mode.w = DisplayWidth(SDL_Display, SDL_Screen);
desktop_mode.h = DisplayHeight(SDL_Display, SDL_Screen);
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desktop_mode.refresh_rate = 0;
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SDL_AddVideoDisplay(&desktop_mode);
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/* Get the available video modes */
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if (X11_GetVideoModes(this) < 0)
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return -1;
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X11_SaveVidModeGamma(this);
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/* Save DPMS and screensaver settings */
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X11_SaveScreenSaver(SDL_Display, &screensaver_timeout, &dpms_enabled);
X11_DisableScreenSaver(SDL_Display);
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/* See if we have been passed a window to use */
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SDL_windowid = SDL_getenv("SDL_WINDOWID");
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/* Create the fullscreen and managed windows */
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create_aux_windows(this);
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/* Create the blank cursor */
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SDL_BlankCursor = this->CreateWMCursor(this, blank_cdata, blank_cmask,
BLANK_CWIDTH, BLANK_CHEIGHT,
BLANK_CHOTX, BLANK_CHOTY);
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/* Fill in some window manager capabilities */
this->info.wm_available = 1;
/* We're done! */
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XFlush(SDL_Display);
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return (0);
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}
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static void
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X11_DestroyWindow(_THIS, SDL_Surface * screen)
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{
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/* Clean up OpenGL */
if (screen) {
screen->flags &= ~SDL_INTERNALOPENGL;
}
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X11_GL_Shutdown(this);
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if (!SDL_windowid) {
/* Hide the managed window */
if (WMwindow) {
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XUnmapWindow(SDL_Display, WMwindow);
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}
if (screen && (screen->flags & SDL_FULLSCREEN)) {
screen->flags &= ~SDL_FULLSCREEN;
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X11_LeaveFullScreen(this);
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}
/* Destroy the output window */
if (SDL_Window) {
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XDestroyWindow(SDL_Display, SDL_Window);
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}
/* 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) {
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XFreeColors(GFX_Display,
SDL_DisplayColormap, &pixel, 1, 0);
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--SDL_XPixels[pixel];
}
}
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SDL_free(SDL_XPixels);
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624
625
626
SDL_XPixels = NULL;
}
/* Free the graphics context */
if (SDL_GC) {
627
XFreeGC(SDL_Display, SDL_GC);
628
629
630
SDL_GC = 0;
}
}
631
632
}
633
static SDL_bool
634
X11_WindowPosition(_THIS, int *x, int *y, int w, int h)
635
{
636
637
const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
const char *center = SDL_getenv("SDL_VIDEO_CENTERED");
638
if (window) {
639
if (SDL_sscanf(window, "%d,%d", x, y) == 2) {
640
641
return SDL_TRUE;
}
642
if (SDL_strcmp(window, "center") == 0) {
643
644
645
646
center = window;
}
}
if (center) {
647
648
*x = (DisplayWidth(SDL_Display, SDL_Screen) - w) / 2;
*y = (DisplayHeight(SDL_Display, SDL_Screen) - h) / 2;
649
650
651
return SDL_TRUE;
}
return SDL_FALSE;
652
653
}
654
static void
655
X11_SetSizeHints(_THIS, int w, int h, Uint32 flags)
656
{
657
658
XSizeHints *hints;
659
hints = XAllocSizeHints();
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
if (hints) {
if (flags & SDL_RESIZABLE) {
hints->min_width = 32;
hints->min_height = 32;
hints->max_height = 4096;
hints->max_width = 4096;
} else {
hints->min_width = hints->max_width = w;
hints->min_height = hints->max_height = h;
}
hints->flags = PMaxSize | PMinSize;
if (flags & SDL_FULLSCREEN) {
hints->x = 0;
hints->y = 0;
hints->flags |= USPosition;
} else
/* Center it, if desired */
677
if (X11_WindowPosition(this, &hints->x, &hints->y, w, h)) {
678
hints->flags |= USPosition;
679
XMoveWindow(SDL_Display, WMwindow, hints->x, hints->y);
680
681
/* Flush the resize event so we don't catch it later */
682
XSync(SDL_Display, True);
683
}
684
685
XSetWMNormalHints(SDL_Display, WMwindow, hints);
XFree(hints);
686
687
688
689
690
691
692
693
694
695
696
}
/* 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 */
697
WM_HINTS = XInternAtom(SDL_Display, "_MOTIF_WM_HINTS", True);
698
699
700
701
702
703
704
705
706
707
708
709
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};
710
711
712
713
714
XChangeProperty(SDL_Display, WMwindow,
WM_HINTS, WM_HINTS, 32,
PropModeReplace,
(unsigned char *) &MWMHints,
sizeof(MWMHints) / sizeof(long));
715
716
717
set = SDL_TRUE;
}
/* Now try to set KWM hints */
718
WM_HINTS = XInternAtom(SDL_Display, "KWM_WIN_DECORATION", True);
719
720
721
if (WM_HINTS != None) {
long KWMHints = 0;
722
723
724
725
726
XChangeProperty(SDL_Display, WMwindow,
WM_HINTS, WM_HINTS, 32,
PropModeReplace,
(unsigned char *) &KWMHints,
sizeof(KWMHints) / sizeof(long));
727
728
729
set = SDL_TRUE;
}
/* Now try to set GNOME hints */
730
WM_HINTS = XInternAtom(SDL_Display, "_WIN_HINTS", True);
731
732
733
if (WM_HINTS != None) {
long GNOMEHints = 0;
734
735
736
737
738
XChangeProperty(SDL_Display, WMwindow,
WM_HINTS, WM_HINTS, 32,
PropModeReplace,
(unsigned char *) &GNOMEHints,
sizeof(GNOMEHints) / sizeof(long));
739
740
741
742
set = SDL_TRUE;
}
/* Finally set the transient hints if necessary */
if (!set) {
743
XSetTransientForHint(SDL_Display, WMwindow, SDL_Root);
744
745
746
747
748
749
750
751
752
}
} 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 */
753
WM_HINTS = XInternAtom(SDL_Display, "_MOTIF_WM_HINTS", True);
754
if (WM_HINTS != None) {
755
XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
756
757
758
set = SDL_TRUE;
}
/* Now try to unset KWM hints */
759
WM_HINTS = XInternAtom(SDL_Display, "KWM_WIN_DECORATION", True);
760
if (WM_HINTS != None) {
761
XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
762
763
764
set = SDL_TRUE;
}
/* Now try to unset GNOME hints */
765
WM_HINTS = XInternAtom(SDL_Display, "_WIN_HINTS", True);
766
if (WM_HINTS != None) {
767
XDeleteProperty(SDL_Display, WMwindow, WM_HINTS);
768
769
770
771
772
set = SDL_TRUE;
}
/* Finally unset the transient hints if necessary */
if (!set) {
/* NOTE: Does this work? */
773
XSetTransientForHint(SDL_Display, WMwindow, None);
774
775
}
}
776
777
}
778
static int
779
780
X11_CreateWindow(_THIS, SDL_Surface * screen,
const SDL_DisplayMode * mode, Uint32 flags)
781
{
782
783
784
785
786
787
int i, depth;
Visual *vis;
int vis_change;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
788
789
SDL_PixelFormatEnumToMasks(mode->format, &bpp, &Rmask, &Gmask, &Bmask,
&Amask);
790
791
792
/* If a window is already present, destroy it and start fresh */
if (SDL_Window) {
793
X11_DestroyWindow(this, screen);
794
795
796
797
798
switch_waiting = 0; /* Prevent jump back to now-meaningless state. */
}
/* See if we have been given a window id */
if (SDL_windowid) {
799
SDL_Window = SDL_strtol(SDL_windowid, NULL, 0);
800
801
802
803
804
805
806
807
} else {
SDL_Window = 0;
}
/* find out which visual we are going to use */
if (flags & SDL_INTERNALOPENGL) {
XVisualInfo *vi;
808
vi = X11_GL_GetVisual(this);
809
810
811
812
813
814
815
816
if (!vi) {
return -1;
}
vis = vi->visual;
depth = vi->depth;
} else if (SDL_windowid) {
XWindowAttributes a;
817
XGetWindowAttributes(SDL_Display, SDL_Window, &a);
818
819
820
821
822
823
824
825
826
827
828
vis = a.visual;
depth = a.depth;
} else {
for (i = 0; i < this->hidden->nvisuals; i++) {
if (this->hidden->visuals[i].bpp == bpp &&
this->hidden->visuals[i].visual->red_mask == Rmask &&
this->hidden->visuals[i].visual->green_mask == Gmask &&
this->hidden->visuals[i].visual->blue_mask == Bmask)
break;
}
if (i == this->hidden->nvisuals) {
829
SDL_SetError("No matching visual for requested depth");
830
831
832
833
834
return -1; /* should never happen */
}
vis = this->hidden->visuals[i].visual;
depth = this->hidden->visuals[i].depth;
}
835
#ifdef X11_DEBUG
836
837
838
839
840
841
842
843
844
845
846
847
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);
848
#endif
849
850
851
852
853
vis_change = (vis != SDL_Visual);
SDL_Visual = vis;
this->hidden->depth = depth;
/* Allocate the new pixel format for this video mode */
854
if (!SDL_ReallocFormat(screen, bpp, Rmask, Gmask, Bmask, Amask)) {
855
856
857
858
859
return -1;
}
/* Create the appropriate colormap */
if (SDL_XColorMap != SDL_DisplayColormap) {
860
XFreeColormap(SDL_Display, SDL_XColorMap);
861
862
863
864
865
866
}
if (SDL_Visual->class == PseudoColor) {
int ncolors;
/* Allocate the pixel flags */
ncolors = SDL_Visual->map_entries;
867
SDL_XPixels = SDL_malloc(ncolors * sizeof(int));
868
if (SDL_XPixels == NULL) {
869
SDL_OutOfMemory();
870
871
return -1;
}
872
SDL_memset(SDL_XPixels, 0, ncolors * sizeof(*SDL_XPixels));
873
874
/* always allocate a private colormap on non-default visuals */
875
if (SDL_Visual != DefaultVisual(SDL_Display, SDL_Screen)) {
876
877
878
879
flags |= SDL_HWPALETTE;
}
if (flags & SDL_HWPALETTE) {
screen->flags |= SDL_HWPALETTE;
880
881
SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
SDL_Visual, AllocAll);
882
883
884
885
886
887
} else {
SDL_XColorMap = SDL_DisplayColormap;
}
} else if (SDL_Visual->class == DirectColor) {
/* Create a colormap which we can manipulate for gamma */
888
889
890
SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
SDL_Visual, AllocAll);
XSync(SDL_Display, False);
891
892
/* Initialize the colormap to the identity mapping */
893
SDL_GetGammaRamp(0, 0, 0);
894
SDL_VideoSurface = screen;
895
X11_SetGammaRamp(this, SDL_CurrentWindow.gamma);
896
897
898
SDL_VideoSurface = NULL;
} else {
/* Create a read-only colormap for our window */
899
900
SDL_XColorMap = XCreateColormap(SDL_Display, SDL_Root,
SDL_Visual, AllocNone);
901
902
903
904
}
/* Recreate the auxiliary windows, if needed (required for GL) */
if (vis_change)
905
create_aux_windows(this);
906
907
908
909
910
911
if (screen->flags & SDL_HWPALETTE) {
/* Since the full-screen window might have got a nonzero background
colour (0 is white on some displays), we should reset the
background to 0 here since that is what the user expects
with a private colormap */
912
913
XSetWindowBackground(SDL_Display, FSwindow, 0);
XClearWindow(SDL_Display, FSwindow);
914
915
916
917
}
/* resize the (possibly new) window manager window */
if (!SDL_windowid) {
918
X11_SetSizeHints(this, mode->w, mode->h, flags);
919
920
window_w = mode->w;
window_h = mode->h;
921
XResizeWindow(SDL_Display, WMwindow, mode->w, mode->h);
922
923
924
925
926
}
/* Create (or use) the X11 display window */
if (!SDL_windowid) {
if (flags & SDL_INTERNALOPENGL) {
927
if (X11_GL_CreateWindow(this, mode->w, mode->h) < 0) {
928
929
930
931
932
933
934
935
return (-1);
}
} else {
XSetWindowAttributes swa;
swa.background_pixel = 0;
swa.border_pixel = 0;
swa.colormap = SDL_XColorMap;
936
937
938
939
940
SDL_Window = XCreateWindow(SDL_Display, WMwindow,
0, 0, mode->w, mode->h, 0, depth,
InputOutput, SDL_Visual,
CWBackPixel | CWBorderPixel
| CWColormap, &swa);
941
942
}
/* Only manage our input if we own the window */
943
944
945
946
XSelectInput(SDL_Display, SDL_Window,
(EnterWindowMask | LeaveWindowMask
| ButtonPressMask | ButtonReleaseMask
| PointerMotionMask | ExposureMask));
947
948
949
}
/* Create the graphics context here, once we have a window */
if (flags & SDL_INTERNALOPENGL) {
950
if (X11_GL_CreateContext(this) < 0) {
951
952
953
954
955
956
957
958
return (-1);
} else {
screen->flags |= SDL_INTERNALOPENGL;
}
} else {
XGCValues gcv;
gcv.graphics_exposures = False;
959
960
SDL_GC = XCreateGC(SDL_Display, SDL_Window,
GCGraphicsExposures, &gcv);
961
if (!SDL_GC) {
962
SDL_SetError("Couldn't create graphics context");
963
964
965
966
967
968
return (-1);
}
}
/* Set our colormaps when not setting a GL mode */
if (!(flags & SDL_INTERNALOPENGL)) {
969
XSetWindowColormap(SDL_Display, SDL_Window, SDL_XColorMap);
970
if (!SDL_windowid) {
971
972
XSetWindowColormap(SDL_Display, FSwindow, SDL_XColorMap);
XSetWindowColormap(SDL_Display, WMwindow, SDL_XColorMap);
973
974
975
}
}
#if 0 /* This is an experiment - are the graphics faster now? - nope. */
976
if (SDL_getenv("SDL_VIDEO_X11_BACKINGSTORE"))
977
#endif
978
979
980
981
982
/* Cache the window in the server, when possible */
{
Screen *xscreen;
XSetWindowAttributes a;
983
984
xscreen = ScreenOfDisplay(SDL_Display, SDL_Screen);
a.backing_store = DoesBackingStore(xscreen);
985
if (a.backing_store != NotUseful) {
986
987
XChangeWindowAttributes(SDL_Display, SDL_Window,
CWBackingStore, &a);
988
989
990
991
}
}
/* Update the internal keyboard state */
992
X11_SetKeyboardState(SDL_Display, NULL);
993
994
995
/* When the window is first mapped, ignore non-modifier keys */
{
996
Uint8 *keys = SDL_GetKeyState(NULL);
997
998
999
1000
for (i = 0; i < SDLK_LAST; ++i) {
switch (i) {
case SDLK_NUMLOCK:
case SDLK_CAPSLOCK: