static int GGI_DBE_create_window_drawable (struct ggi_visual *vis)
{
ggi_x_priv *priv = GGIX_PRIV(vis);
XdbeBackBuffer backBuffer;
if(priv->win == None)
return GGI_ENODEVICE;
priv->drawable = priv->win;
/* Allocate back buffer */
backBuffer = XdbeAllocateBackBufferName(priv->disp,
priv->win, XdbeUntouched);
if (backBuffer != None) {
priv->drawable = backBuffer;
} else {
DPRINT_LIBS("X: DOUBLE-BUFFER: Back buffer allocation failed\n");
return GGI_EFATAL;
}
return 0;
}
bool x11_init(XRESOURCES* res, CFG* config){
Window root;
XSetWindowAttributes window_attributes;
unsigned width, height;
Atom wm_state_fullscreen;
int xdbe_major, xdbe_minor;
XTextProperty window_name;
pid_t pid = getpid();
//allocate some structures
XSizeHints* size_hints = XAllocSizeHints();
XWMHints* wm_hints = XAllocWMHints();
XClassHint* class_hints = XAllocClassHint();
if(!size_hints || !wm_hints || !class_hints){
fprintf(stderr, "Failed to allocate X data structures\n");
return false;
}
//x data initialization
res->display = XOpenDisplay(NULL);
if(!(res->display)){
fprintf(stderr, "Failed to open display\n");
XFree(size_hints);
XFree(wm_hints);
XFree(class_hints);
return false;
}
if(config->double_buffer){
config->double_buffer = (XdbeQueryExtension(res->display, &xdbe_major, &xdbe_minor) != 0);
}
else{
config->double_buffer = false;
}
errlog(config, LOG_INFO, "Double buffering %s\n", config->double_buffer ? "enabled":"disabled");
res->screen = DefaultScreen(res->display);
root = RootWindow(res->display, res->screen);
//start xft
if(!XftInit(NULL)){
fprintf(stderr, "Failed to initialize Xft\n");
XFree(size_hints);
XFree(wm_hints);
XFree(class_hints);
return false;
}
//set up colors
res->text_color = colorspec_parse(config->text_color, res->display, res->screen);
res->bg_color = colorspec_parse(config->bg_color, res->display, res->screen);
res->debug_color = colorspec_parse(config->debug_color, res->display, res->screen);
//set up window params
window_attributes.background_pixel = res->bg_color.pixel;
window_attributes.cursor = None;
window_attributes.event_mask = ExposureMask | KeyPressMask | ButtonPressMask | StructureNotifyMask;
width = DisplayWidth(res->display, res->screen);
height = DisplayHeight(res->display, res->screen);
//create window
res->main = XCreateWindow(res->display,
root,
0,
0,
width,
height,
0,
CopyFromParent,
InputOutput,
CopyFromParent,
CWBackPixel | CWCursor | CWEventMask,
&window_attributes);
//set window properties
if(XStringListToTextProperty(&(config->window_name), 1, &window_name) == 0){
fprintf(stderr, "Failed to create string list, aborting\n");
return false;
}
wm_hints->flags = 0;
class_hints->res_name = "xecho";
class_hints->res_class = "xecho";
XSetWMProperties(res->display, res->main, &window_name, NULL, NULL, 0, NULL, wm_hints, class_hints);
XFree(window_name.value);
XFree(size_hints);
XFree(wm_hints);
XFree(class_hints);
//set fullscreen mode
if(!config->windowed){
wm_state_fullscreen = XInternAtom(res->display, "_NET_WM_STATE_FULLSCREEN", False);
XChangeProperty(res->display, res->main, XInternAtom(res->display, "_NET_WM_STATE", False), XA_ATOM, 32, PropModeReplace, (unsigned char*) &wm_state_fullscreen, 1);
}
XChangeProperty(res->display, res->main, XInternAtom(res->display, "_NET_WM_PID", False), XA_CARDINAL, 32, PropModeReplace, (unsigned char*)&pid, 1);
//allocate back drawing buffer
if(config->double_buffer){
res->back_buffer = XdbeAllocateBackBufferName(res->display, res->main, XdbeBackground);
}
//make xft drawable from window
res->drawable = XftDrawCreate(res->display, (config->double_buffer?res->back_buffer:res->main), DefaultVisual(res->display, res->screen), DefaultColormap(res->display, res->screen));
if(!res->drawable){
fprintf(stderr, "Failed to allocate drawable\n");
return false;
}
//register for WM_DELETE_WINDOW messages
res->wm_delete = XInternAtom(res->display, "WM_DELETE_WINDOW", False);
XSetWMProtocols(res->display, res->main, &(res->wm_delete), 1);
//map window
XMapRaised(res->display, res->main);
//get x socket fds
if(!xfd_add(&(res->xfds), XConnectionNumber(res->display))){
fprintf(stderr, "Failed to allocate xfd memory\n");
return false;
}
if(XAddConnectionWatch(res->display, xconn_watch, (void*)(&(res->xfds))) == 0){
fprintf(stderr, "Failed to register connection watch procedure\n");
return false;
}
return true;
}
