/*

SDL - Simple DirectMedia Layer

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"

#include <unistd.h> /* For getpid() and readlink() */

#include "SDL_video.h"

#include "SDL_mouse.h"

#include "../SDL_sysvideo.h"

#include "../SDL_pixels_c.h"

#include "SDL_x11video.h"

#if SDL_VIDEO_DRIVER_PANDORA

#include "SDL_x11opengles.h"

#endif

/* Initialization/Query functions */

static int X11_VideoInit(_THIS);

static void X11_VideoQuit(_THIS);

/* Find out what class name we should use */

static char *

get_classname()

{

char *spot;

#if defined(__LINUX__) || defined(__FREEBSD__)

char procfile[1024];

char linkfile[1024];

int linksize;

#endif

/* First allow environment variable override */

spot = SDL_getenv("SDL_VIDEO_X11_WMCLASS");

if (spot) {

return SDL_strdup(spot);

}

/* Next look at the application's executable name */

#if defined(__LINUX__) || defined(__FREEBSD__)

#if defined(__LINUX__)

SDL_snprintf(procfile, SDL_arraysize(procfile), "/proc/%d/exe", getpid());

#elif defined(__FREEBSD__)

SDL_snprintf(procfile, SDL_arraysize(procfile), "/proc/%d/file",

getpid());

#else

#error Where can we find the executable name?

#endif

linksize = readlink(procfile, linkfile, sizeof(linkfile) - 1);

if (linksize > 0) {

linkfile[linksize] = '\0';

spot = SDL_strrchr(linkfile, '/');

if (spot) {

return SDL_strdup(spot + 1);

} else {

return SDL_strdup(linkfile);

}

}

#endif /* __LINUX__ || __FREEBSD__ */

/* Finally use the default we've used forever */

return SDL_strdup("SDL_App");

}

/* X11 driver bootstrap functions */

static int

X11_Available(void)

{

Display *display = NULL;

if (SDL_X11_LoadSymbols()) {

display = XOpenDisplay(NULL);

if (display != NULL) {

XCloseDisplay(display);

}

SDL_X11_UnloadSymbols();

}

return (display != NULL);

}

static void

X11_DeleteDevice(SDL_VideoDevice * device)

{

SDL_VideoData *data = (SDL_VideoData *) device->driverdata;

if (data->display) {

XCloseDisplay(data->display);

}

#if SDL_VIDEO_DRIVER_PANDORA

SDL_free(device->gles_data);

#endif

SDL_free(device);

SDL_X11_UnloadSymbols();

}

static SDL_VideoDevice *

X11_CreateDevice(int devindex)

{

SDL_VideoDevice *device;

SDL_VideoData *data;

const char *display = NULL; /* Use the DISPLAY environment variable */

if (!SDL_X11_LoadSymbols()) {

return NULL;

}

/* Initialize all variables that we clean on shutdown */

device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));

if (!device) {

SDL_OutOfMemory();

return NULL;

data = (struct SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));

if (!data) {

return NULL;

}

device->driverdata = data;

#if SDL_VIDEO_DRIVER_PANDORA

device->gles_data = (struct SDL_PrivateGLESData *) SDL_calloc(1, sizeof(SDL_PrivateGLESData));

if (!device->gles_data) {

SDL_OutOfMemory();

return NULL;

}

#endif

/* FIXME: Do we need this?

if ( (SDL_strncmp(XDisplayName(display), ":", 1) == 0) ||

(SDL_strncmp(XDisplayName(display), "unix:", 5) == 0) ) {

local_X11 = 1;

} else {

local_X11 = 0;

}

*/

data->display = XOpenDisplay(display);

#if defined(__osf__) && defined(SDL_VIDEO_DRIVER_X11_DYNAMIC)

/* 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 (data->display == NULL) {

SDL_Delay(1000);

data->display = XOpenDisplay(display);

}

#endif

if (data->display == NULL) {

SDL_free(device);

SDL_SetError("Couldn't open X11 display");

return NULL;

}

#ifdef X11_DEBUG

XSynchronize(data->display, True);

#endif

/* Set the function pointers */

device->VideoInit = X11_VideoInit;

device->VideoQuit = X11_VideoQuit;

device->GetDisplayModes = X11_GetDisplayModes;

device->SetDisplayMode = X11_SetDisplayMode;

device->SetDisplayGammaRamp = X11_SetDisplayGammaRamp;

device->GetDisplayGammaRamp = X11_GetDisplayGammaRamp;

device->CreateWindow = X11_CreateWindow;

device->CreateWindowFrom = X11_CreateWindowFrom;

device->SetWindowTitle = X11_SetWindowTitle;

device->SetWindowPosition = X11_SetWindowPosition;

device->SetWindowSize = X11_SetWindowSize;

device->ShowWindow = X11_ShowWindow;

device->HideWindow = X11_HideWindow;

device->RaiseWindow = X11_RaiseWindow;

device->MaximizeWindow = X11_MaximizeWindow;

device->MinimizeWindow = X11_MinimizeWindow;

device->RestoreWindow = X11_RestoreWindow;

device->SetWindowGrab = X11_SetWindowGrab;

device->DestroyWindow = X11_DestroyWindow;

device->GetWindowWMInfo = X11_GetWindowWMInfo;

device->shape_driver.CreateShaper = X11_CreateShaper;

device->shape_driver.SetWindowShape = X11_SetWindowShape;

device->shape_driver.ResizeWindowShape = X11_ResizeWindowShape;

device->GL_LoadLibrary = X11_GL_LoadLibrary;

device->GL_GetProcAddress = X11_GL_GetProcAddress;

device->GL_CreateContext = X11_GL_CreateContext;

device->GL_MakeCurrent = X11_GL_MakeCurrent;

device->GL_SetSwapInterval = X11_GL_SetSwapInterval;

device->GL_GetSwapInterval = X11_GL_GetSwapInterval;

device->GL_SwapWindow = X11_GL_SwapWindow;

device->GL_DeleteContext = X11_GL_DeleteContext;

#endif

#if SDL_VIDEO_DRIVER_PANDORA

device->GL_LoadLibrary = X11_GLES_LoadLibrary;

device->GL_GetProcAddress = X11_GLES_GetProcAddress;

device->GL_UnloadLibrary = X11_GLES_UnloadLibrary;

device->GL_CreateContext = X11_GLES_CreateContext;

device->GL_MakeCurrent = X11_GLES_MakeCurrent;

device->GL_SetSwapInterval = X11_GLES_SetSwapInterval;

device->GL_GetSwapInterval = X11_GLES_GetSwapInterval;

device->GL_SwapWindow = X11_GLES_SwapWindow;

device->GL_DeleteContext = X11_GLES_DeleteContext;

#endif

device->SetClipboardText = X11_SetClipboardText;

device->GetClipboardText = X11_GetClipboardText;

device->HasClipboardText = X11_HasClipboardText;

device->free = X11_DeleteDevice;

return device;

}

VideoBootStrap X11_bootstrap = {

"x11", "SDL X11 video driver",

X11_Available, X11_CreateDevice

};

static int (*handler) (Display *, XErrorEvent *) = NULL;

static int

X11_CheckWindowManagerErrorHandler(Display * d, XErrorEvent * e)

{

if (e->error_code == BadWindow) {

return (0);

} else {

return (handler(d, e));

}

}

static void

X11_CheckWindowManager(_THIS)

{

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

Display *display = data->display;

Atom _NET_SUPPORTING_WM_CHECK;

int status, real_format;

Atom real_type;

unsigned long items_read, items_left;

unsigned char *propdata;

Window wm_window = 0;

#ifdef DEBUG_WINDOW_MANAGER

char *wm_name;

#endif

/* Set up a handler to gracefully catch errors */

XSync(display, False);

handler = XSetErrorHandler(X11_CheckWindowManagerErrorHandler);

_NET_SUPPORTING_WM_CHECK = XInternAtom(display, "_NET_SUPPORTING_WM_CHECK", False);

status = XGetWindowProperty(display, DefaultRootWindow(display), _NET_SUPPORTING_WM_CHECK, 0L, 1L, False, XA_WINDOW, &real_type, &real_format, &items_read, &items_left, &propdata);

if (status == Success && items_read) {

wm_window = ((Window*)propdata)[0];

}

if (propdata) {

XFree(propdata);

}

if (wm_window) {

status = XGetWindowProperty(display, wm_window, _NET_SUPPORTING_WM_CHECK, 0L, 1L, False, XA_WINDOW, &real_type, &real_format, &items_read, &items_left, &propdata);

if (status != Success || !items_read || wm_window != ((Window*)propdata)[0]) {

wm_window = None;

}

if (propdata) {

XFree(propdata);

}

}

/* Reset the error handler, we're done checking */

XSync(display, False);

XSetErrorHandler(handler);

if (!wm_window) {

#ifdef DEBUG_WINDOW_MANAGER

printf("Couldn't get _NET_SUPPORTING_WM_CHECK property\n");

#endif

return;

}

data->net_wm = SDL_TRUE;

#ifdef DEBUG_WINDOW_MANAGER

wm_name = X11_GetWindowTitle(_this, wm_window);

printf("Window manager: %s\n", wm_name);

SDL_free(wm_name);

#endif

}

int

X11_VideoInit(_THIS)

{

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

/* Get the window class name, usually the name of the application */

data->classname = get_classname();

/* Open a connection to the X input manager */

#ifdef X_HAVE_UTF8_STRING

if (SDL_X11_HAVE_UTF8) {

data->im =

XOpenIM(data->display, NULL, data->classname, data->classname);

}

#endif

/* Look up some useful Atoms */

#define GET_ATOM(X) data->X = XInternAtom(data->display, #X, False)

GET_ATOM(WM_DELETE_WINDOW);

GET_ATOM(_NET_WM_STATE);

GET_ATOM(_NET_WM_STATE_HIDDEN);

GET_ATOM(_NET_WM_STATE_MAXIMIZED_VERT);

GET_ATOM(_NET_WM_STATE_MAXIMIZED_HORZ);

GET_ATOM(_NET_WM_STATE_FULLSCREEN);

GET_ATOM(_NET_WM_NAME);

GET_ATOM(_NET_WM_ICON_NAME);

GET_ATOM(_NET_WM_ICON);

GET_ATOM(UTF8_STRING);

/* Detect the window manager */

X11_CheckWindowManager(_this);

if (X11_InitModes(_this) < 0) {

return -1;

}

if (X11_InitKeyboard(_this) != 0) {

return -1;

}

X11_InitMouse(_this);

return 0;

}

void

X11_VideoQuit(_THIS)

{

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

if (data->classname) {

SDL_free(data->classname);

}

#ifdef X_HAVE_UTF8_STRING

if (data->im) {

XCloseIM(data->im);

}

#endif

X11_QuitModes(_this);

X11_QuitKeyboard(_this);

X11_QuitMouse(_this);

}

/* Once we implement DirectColor colormaps and gamma ramp support...

return SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ? SDL_FALSE : SDL_TRUE;

*/

return SDL_FALSE;

}