/* $Id: tasks.c,v 1.1 2009/08/08 23:55:05 khorben Exp $ */ /* Copyright (c) 2009 Pierre Pronchery */ /* This file is part of DeforaOS Desktop Panel */ /* This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, version 3 of the License. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include #include #include "panel.h" #include "../../config.h" /* Tasks */ /* private */ /* types */ typedef enum _TasksAtom { TASKS_ATOM_NET_CLIENT_LIST = 0, TASKS_ATOM_NET_WM_VISIBLE_NAME, TASKS_ATOM_NET_WM_NAME, TASKS_ATOM_UTF8_STRING } TasksAtom; #define TASKS_ATOM_LAST TASKS_ATOM_UTF8_STRING #define TASKS_ATOM_COUNT (TASKS_ATOM_LAST + 1) typedef struct _Tasks { GtkWidget * hbox; Atom atom[TASKS_ATOM_COUNT]; GdkDisplay * display; GdkScreen * screen; GdkWindow * root; } Tasks; /* constants */ static const char * _tasks_atom[TASKS_ATOM_COUNT] = { "_NET_CLIENT_LIST", "_NET_WM_VISIBLE_NAME", "_NET_WM_NAME", "UTF8_STRING" }; /* prototypes */ static GtkWidget * _tasks_init(PanelApplet * applet); static void _tasks_destroy(PanelApplet * applet); /* accessors */ static int _tasks_get_text_property(Tasks * tasks, Window window, Atom property, char ** ret); static int _tasks_get_window_property(Tasks * tasks, Window window, TasksAtom property, Atom atom, unsigned long * cnt, unsigned char ** ret); /* useful */ static void _tasks_do(Tasks * tasks); /* callbacks */ static GdkFilterReturn _on_filter(GdkXEvent * xevent, GdkEvent * event, gpointer data); void _on_screen_changed(GtkWidget * widget, GdkScreen * previous, gpointer data); /* public */ /* variables */ PanelApplet applet = { NULL, _tasks_init, _tasks_destroy, PANEL_APPLET_POSITION_START, NULL }; /* private */ /* functions */ /* tasks_init */ static GtkWidget * _tasks_init(PanelApplet * applet) { Tasks * tasks; if((tasks = malloc(sizeof(*tasks))) == NULL) return NULL; applet->priv = tasks; tasks->hbox = gtk_hbox_new(FALSE, 0); g_signal_connect(G_OBJECT(tasks->hbox), "screen-changed", G_CALLBACK( _on_screen_changed), tasks); tasks->display = NULL; tasks->screen = NULL; tasks->root = NULL; return tasks->hbox; } /* tasks_destroy */ static void _tasks_destroy(PanelApplet * applet) { Tasks * tasks = applet->priv; free(tasks); } /* accessors */ /* tasks_get_text_property */ static int _tasks_get_text_property(Tasks * tasks, Window window, Atom property, char ** ret) { int res; XTextProperty text; int cnt; char ** list; int i; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(tasks, window, %lu)\n", __func__, property); #endif res = XGetTextProperty(GDK_DISPLAY_XDISPLAY(tasks->display), window, &text, property); if(res != True) /* XXX why is it not Success? */ return 1; cnt = gdk_text_property_to_utf8_list(gdk_x11_xatom_to_atom( text.encoding), text.format, text.value, text.nitems, &list); if(cnt > 0) { *ret = list[0]; for(i = 1; i < cnt; i++) g_free(list[i]); g_free(list); } else *ret = NULL; if(text.value != NULL) XFree(text.value); return 0; } /* tasks_get_window_property */ static int _tasks_get_window_property(Tasks * tasks, Window window, TasksAtom property, Atom atom, unsigned long * cnt, unsigned char ** ret) { int res; Atom type; int format; unsigned long bytes; #ifdef DEBUG fprintf(stderr, "DEBUG: %s(tasks, window, %s, %lu)\n", __func__, _tasks_atom[property], atom); #endif res = XGetWindowProperty(GDK_DISPLAY_XDISPLAY(tasks->display), window, tasks->atom[property], 0, G_MAXLONG, False, atom, &type, &format, cnt, &bytes, ret); if(res != Success) return 1; if(type != atom) { if(*ret != NULL) XFree(*ret); *ret = NULL; return 1; } return 0; } /* tasks_do */ static char * _do_name(Tasks * tasks, Window window); static char * _do_name_text(Tasks * tasks, Window window, Atom property); static char * _do_name_utf8(Tasks * tasks, Window window, Atom property); static void _tasks_do(Tasks * tasks) { unsigned long cnt = 0; Window * windows = NULL; unsigned long i; GdkWindow * window; char * name; GtkWidget * widget; #ifdef DEBUG fprintf(stderr, "DEBUG: %s()\n", __func__); #endif if(_tasks_get_window_property(tasks, GDK_WINDOW_XWINDOW(tasks->root), TASKS_ATOM_NET_CLIENT_LIST, XA_WINDOW, &cnt, (void*)&windows) != 0) return; for(i = 0; i < cnt; i++) { if((window = gdk_window_foreign_new_for_display(tasks->display, windows[i])) == NULL) continue; if(gdk_window_get_type_hint(window) != GDK_WINDOW_TYPE_HINT_NORMAL) continue; if((name = _do_name(tasks, windows[i])) == NULL) continue; widget = gtk_button_new_with_label(name); gtk_widget_set_size_request(widget, 100, -1); gtk_box_pack_start(GTK_BOX(tasks->hbox), widget, FALSE, TRUE, 2); g_free(name); } } static char * _do_name(Tasks * tasks, Window window) { char * ret; if((ret = _do_name_utf8(tasks, window, TASKS_ATOM_NET_WM_VISIBLE_NAME)) != NULL) return ret; if((ret = _do_name_utf8(tasks, window, TASKS_ATOM_NET_WM_NAME)) != NULL) return ret; if((ret = _do_name_text(tasks, window, XA_WM_NAME)) != NULL) return ret; return g_strdup("(Untitled)"); } static char * _do_name_text(Tasks * tasks, Window window, Atom property) { char * ret = NULL; if(_tasks_get_text_property(tasks, window, property, (void*)&ret) != 0) return NULL; /* FIXME convert to UTF-8 */ return ret; } static char * _do_name_utf8(Tasks * tasks, Window window, Atom property) { char * ret = NULL; char * str = NULL; unsigned long cnt = 0; if(_tasks_get_window_property(tasks, window, property, tasks->atom[TASKS_ATOM_UTF8_STRING], &cnt, (void*)&str) != 0) return NULL; if(g_utf8_validate(str, cnt, NULL)) ret = g_strndup(str, cnt); XFree(str); return ret; } /* callbacks */ /* on_filter */ static GdkFilterReturn _on_filter(GdkXEvent * xevent, GdkEvent * event, gpointer data) { Tasks * tasks = data; XEvent * xev = xevent; if(xev->type != PropertyNotify) return GDK_FILTER_CONTINUE; if(xev->xproperty.atom != tasks->atom[TASKS_ATOM_NET_CLIENT_LIST]) return GDK_FILTER_CONTINUE; _tasks_do(tasks); return GDK_FILTER_CONTINUE; } /* on_screen_changed */ void _on_screen_changed(GtkWidget * widget, GdkScreen * previous, gpointer data) { Tasks * tasks = data; GdkEventMask events; size_t i; #ifdef DEBUG fprintf(stderr, "DEBUG: %s()\n", __func__); #endif tasks->screen = gtk_widget_get_screen(widget); tasks->display = gdk_screen_get_display(tasks->screen); tasks->root = gdk_screen_get_root_window(tasks->screen); events = gdk_window_get_events(tasks->root); gdk_window_set_events(tasks->root, events | GDK_PROPERTY_CHANGE_MASK); gdk_window_add_filter(tasks->root, _on_filter, tasks); /* atoms */ for(i = 0; i < TASKS_ATOM_COUNT; i++) tasks->atom[i] = gdk_x11_get_xatom_by_name_for_display( tasks->display, _tasks_atom[i]); _tasks_do(tasks); }