otk_c/display.c (raw)
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// -*- mode: C; indent-tabs-mode: nil; c-basic-offset: 2; -*- #include "../config.h" #include "display.h" #include "screeninfo.h" #include <X11/keysym.h> #ifdef SHAPE #include <X11/extensions/shape.h> #endif // SHAPE #ifdef HAVE_STDIO_H # include <stdio.h> #endif // HAVE_STDIO_H #ifdef HAVE_STDLIB_H # include <stdlib.h> #endif // HAVE_STDLIB_H #ifdef HAVE_FCNTL_H # include <fcntl.h> #endif // HAVE_FCNTL_H #ifdef HAVE_UNISTD_H # include <sys/types.h> # include <unistd.h> #endif // HAVE_UNISTD_H #include "../src/gettext.h" extern PyTypeObject OtkDisplay_Type; static int xerrorHandler(Display *d, XErrorEvent *e); struct OtkDisplay *OBDisplay = NULL; void OtkDisplay_Initialize(char *name) { OtkDisplay* self; PyObject *disp_env; XModifierKeymap *modmap; unsigned int NumLockMask = 0, ScrollLockMask = 0; size_t cnt; int i; int junk; (void) junk; self = PyObject_New(OtkDisplay, &OtkDisplay_Type); // Open the X display if (!(self->display = XOpenDisplay(name))) { printf(_("Unable to open connection to the X server. Please set the \n\ DISPLAY environment variable approriately, or use the '-display' command \n\ line argument.\n\n")); exit(1); } if (fcntl(ConnectionNumber(self->display), F_SETFD, 1) == -1) { printf(_("Couldn't mark display connection as close-on-exec.\n\n")); exit(1); } XSetErrorHandler(xerrorHandler); // set the DISPLAY environment variable for any lauched children, to the // display we're using, so they open in the right place. disp_env = PyString_FromFormat("DISPLAY=%s", DisplayString(self->display)); if (putenv(PyString_AsString(disp_env))) { printf(_("warning: couldn't set environment variable 'DISPLAY'\n")); perror("putenv()"); } Py_DECREF(disp_env); // find the availability of X extensions we like to use #ifdef SHAPE self->shape = XShapeQueryExtension(self->display, &self->shape_event_basep, &junk); #endif #ifdef XINERAMA self->xinerama = XineramaQueryExtension(self->display, &self->xinerama_event_basep, &junk); #endif // XINERAMA // get lock masks that are defined by the display (not constant) modmap = XGetModifierMapping(self->display); if (modmap && modmap->max_keypermod > 0) { const int mask_table[] = { ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask }; const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) * modmap->max_keypermod; // get the values of the keyboard lock modifiers // Note: Caps lock is not retrieved the same way as Scroll and Num lock // since it doesn't need to be. const KeyCode num_lock = XKeysymToKeycode(self->display, XK_Num_Lock); const KeyCode scroll_lock = XKeysymToKeycode(self->display, XK_Scroll_Lock); for (cnt = 0; cnt < size; ++cnt) { if (! modmap->modifiermap[cnt]) continue; if (num_lock == modmap->modifiermap[cnt]) NumLockMask = mask_table[cnt / modmap->max_keypermod]; if (scroll_lock == modmap->modifiermap[cnt]) ScrollLockMask = mask_table[cnt / modmap->max_keypermod]; } } if (modmap) XFreeModifiermap(modmap); self->mask_list[0] = 0; self->mask_list[1] = LockMask; self->mask_list[2] = NumLockMask; self->mask_list[3] = LockMask | NumLockMask; self->mask_list[4] = ScrollLockMask; self->mask_list[5] = ScrollLockMask | LockMask; self->mask_list[6] = ScrollLockMask | NumLockMask; self->mask_list[7] = ScrollLockMask | LockMask | NumLockMask; // set the global var, for the new screeninfo's OBDisplay = self; // Get information on all the screens which are available. self->screenInfoList = (PyListObject*)PyList_New(ScreenCount(self->display)); for (i = 0; i < ScreenCount(self->display); ++i) PyList_SetItem((PyObject*)self->screenInfoList, i, OtkScreenInfo_New(i)); Py_INCREF(OBDisplay); // make sure it stays around!! } void OtkDisplay_Grab(OtkDisplay *self) { assert(self); if (self->grab_count == 0) XGrabServer(self->display); self->grab_count++; } void OtkDisplay_Ungrab(OtkDisplay *self) { if (self->grab_count == 0) return; self->grab_count--; if (self->grab_count == 0) XUngrabServer(self->display); } OtkScreenInfo *OtkDisplay_ScreenInfo(OtkDisplay *self, int num) { assert(num >= 0); return (OtkScreenInfo*)PyList_GetItem((PyObject*)self->screenInfoList, num); } static PyObject *otkdisplay_grab(OtkDisplay* self, PyObject* args) { if (!PyArg_ParseTuple(args, ":grab")) return NULL; OtkDisplay_Grab(self); return Py_None; } static PyObject *otkdisplay_ungrab(OtkDisplay* self, PyObject* args) { if (!PyArg_ParseTuple(args, ":ungrab")) return NULL; OtkDisplay_Ungrab(self); return Py_None; } static PyMethodDef get_methods[] = { {"grab", (PyCFunction)otkdisplay_grab, METH_VARARGS, "Grab the X display."}, {"ungrab", (PyCFunction)otkdisplay_ungrab, METH_VARARGS, "Ungrab/Release the X display."}, {NULL, NULL, 0, NULL} }; static void otkdisplay_dealloc(PyObject* self) { XCloseDisplay(((OtkDisplay*) self)->display); Py_DECREF(((OtkDisplay*) self)->screenInfoList); PyObject_Del(self); } static PyObject *otkdisplay_getattr(PyObject *obj, char *name) { return Py_FindMethod(get_methods, obj, name); } PyTypeObject OtkDisplay_Type = { PyObject_HEAD_INIT(NULL) 0, "OtkDisplay", sizeof(OtkDisplay), 0, otkdisplay_dealloc, /*tp_dealloc*/ 0, /*tp_print*/ otkdisplay_getattr, /*tp_getattr*/ 0, /*tp_setattr*/ 0, /*tp_compare*/ 0, /*tp_repr*/ 0, /*tp_as_number*/ 0, /*tp_as_sequence*/ 0, /*tp_as_mapping*/ 0, /*tp_hash */ }; static int xerrorHandler(Display *d, XErrorEvent *e) { #ifdef DEBUG char errtxt[128]; //if (e->error_code != BadWindow) { XGetErrorText(d, e->error_code, errtxt, 128); printf("X Error: %s\n", errtxt); } #else (void)d; (void)e; #endif return False; } |