/* $Id: tasks.c,v 1.18 2009/08/25 23:17:57 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" /* Tasks */ /* private */ /* types */ typedef enum _TasksAtom { TASKS_ATOM_NET_ACTIVE_WINDOW = 0, TASKS_ATOM_NET_CLIENT_LIST, TASKS_ATOM_NET_CLOSE_WINDOW, TASKS_ATOM_NET_WM_ICON, TASKS_ATOM_NET_WM_NAME, TASKS_ATOM_NET_WM_VISIBLE_NAME, TASKS_ATOM_NET_WM_WINDOW_TYPE, TASKS_ATOM_NET_WM_WINDOW_TYPE_NORMAL, TASKS_ATOM_UTF8_STRING } TasksAtom; #define TASKS_ATOM_LAST TASKS_ATOM_UTF8_STRING #define TASKS_ATOM_COUNT (TASKS_ATOM_LAST + 1) typedef struct _Tasks Tasks; typedef struct _Task { Tasks * tasks; Window window; GtkWidget * widget; GtkWidget * image; #ifndef EMBEDDED GtkWidget * label; #endif gboolean delete; } Task; struct _Tasks { PanelAppletHelper * helper; Task ** tasks; size_t tasks_cnt; GtkWidget * hbox; GtkIconSize icon_size; int icon_width; int icon_height; Atom atom[TASKS_ATOM_COUNT]; GdkDisplay * display; GdkScreen * screen; GdkWindow * root; }; /* constants */ static const char * _tasks_atom[TASKS_ATOM_COUNT] = { "_NET_ACTIVE_WINDOW", "_NET_CLIENT_LIST", "_NET_CLOSE_WINDOW", "_NET_WM_ICON", "_NET_WM_NAME", "_NET_WM_VISIBLE_NAME", "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_NORMAL", "UTF8_STRING" }; /* prototypes */ /* task */ static Task * _task_new(Tasks * tasks, Window window, char const * name, GdkPixbuf * pixbuf); static void _task_delete(Task * Task); static void _task_set(Task * task, char const * name, GdkPixbuf * pixbuf); /* tasks */ 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 void _on_clicked(GtkWidget * widget, gpointer data); static void _on_close(GtkWidget * widget, gpointer data); static GdkFilterReturn _on_filter(GdkXEvent * xevent, GdkEvent * event, gpointer data); static gboolean _on_popup(GtkWidget * widget, gpointer data); static void _on_screen_changed(GtkWidget * widget, GdkScreen * previous, gpointer data); /* public */ /* variables */ PanelApplet applet = { NULL, _tasks_init, _tasks_destroy, PANEL_APPLET_POSITION_START, #ifndef EMBEDDED TRUE, #else FALSE, #endif TRUE, NULL }; /* private */ /* functions */ /* Task */ /* task_new */ static Task * _task_new(Tasks * tasks, Window window, char const * name, GdkPixbuf * pixbuf) { Task * task; GtkWidget * hbox; if((task = malloc(sizeof(*task))) == NULL) { tasks->helper->error(tasks->helper->priv, "malloc", 0); return NULL; } task->tasks = tasks; task->window = window; task->widget = gtk_button_new(); g_signal_connect(G_OBJECT(task->widget), "popup_menu", G_CALLBACK( _on_popup), task); g_signal_connect(task->widget, "clicked", G_CALLBACK(_on_clicked), task); task->image = gtk_image_new(); task->delete = FALSE; hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start(GTK_BOX(hbox), task->image, FALSE, TRUE, 0); #ifndef EMBEDDED task->label = gtk_label_new(name); #if 0 /* FIXME doesn't seem to work properly */ gtk_label_set_ellipsize(GTK_LABEL(task->label), PANGO_ELLIPSIZE_END); #endif gtk_label_set_line_wrap(GTK_LABEL(task->label), TRUE); gtk_label_set_line_wrap_mode(GTK_LABEL(task->label), PANGO_WRAP_WORD_CHAR); gtk_box_pack_start(GTK_BOX(hbox), task->label, FALSE, TRUE, 4); gtk_widget_set_size_request(task->widget, tasks->icon_width, -1); #endif gtk_container_add(GTK_CONTAINER(task->widget), hbox); _task_set(task, name, pixbuf); return task; } /* task_delete */ static void _task_delete(Task * task) { gtk_container_remove(GTK_CONTAINER(task->tasks->hbox), task->widget); free(task); } /* task_set */ static void _task_set(Task * task, char const * name, GdkPixbuf * pixbuf) { #ifndef EMBEDDED gtk_label_set_text(GTK_LABEL(task->label), name); #endif gtk_widget_set_tooltip_text(task->widget, name); if(pixbuf != NULL) gtk_image_set_from_pixbuf(GTK_IMAGE(task->image), pixbuf); else gtk_image_set_from_stock(GTK_IMAGE(task->image), GTK_STOCK_MISSING_IMAGE, task->tasks->icon_size); } /* Tasks */ /* tasks_init */ static GtkWidget * _tasks_init(PanelApplet * applet) { GtkWidget * ret; Tasks * tasks; if((tasks = malloc(sizeof(*tasks))) == NULL) return NULL; applet->priv = tasks; tasks->helper = applet->helper; tasks->tasks = NULL; tasks->tasks_cnt = 0; tasks->hbox = gtk_hbox_new(TRUE, 0); g_signal_connect(G_OBJECT(tasks->hbox), "screen-changed", G_CALLBACK( _on_screen_changed), tasks); tasks->icon_size = applet->helper->icon_size; tasks->icon_width = 48; tasks->icon_height = 48; gtk_icon_size_lookup(tasks->icon_size, &tasks->icon_width, &tasks->icon_height); tasks->display = NULL; tasks->screen = NULL; tasks->root = NULL; #ifndef EMBEDDED ret = gtk_scrolled_window_new(NULL, NULL); gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(ret), GTK_POLICY_NEVER, GTK_POLICY_NEVER); gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(ret), tasks->hbox); #else ret = tasks->hbox; #endif return ret; } /* tasks_destroy */ static void _tasks_destroy(PanelApplet * applet) { Tasks * tasks = applet->priv; size_t i; for(i = 0; i < tasks->tasks_cnt; i++) free(tasks->tasks[i]); free(tasks->tasks); 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 gdk_error_trap_push(); res = XGetTextProperty(GDK_DISPLAY_XDISPLAY(tasks->display), window, &text, property); if(gdk_error_trap_pop() != 0 || res == 0) 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 gdk_error_trap_push(); res = XGetWindowProperty(GDK_DISPLAY_XDISPLAY(tasks->display), window, tasks->atom[property], 0, G_MAXLONG, False, atom, &type, &format, cnt, &bytes, ret); if(gdk_error_trap_pop() != 0 || 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 GdkPixbuf * _do_pixbuf(Tasks * tasks, Window window); static int _do_tasks_add(Tasks * tasks, Window window, char const * name, GdkPixbuf * pixbuf); static void _do_tasks_clean(Tasks * tasks); static int _do_typehint_normal(Tasks * tasks, Window window); static void _tasks_do(Tasks * tasks) { unsigned long cnt = 0; Window * windows = NULL; unsigned long i; char * name; #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 < tasks->tasks_cnt; i++) tasks->tasks[i]->delete = TRUE; for(i = 0; i < cnt; i++) { if(_do_typehint_normal(tasks, windows[i]) != 0) continue; if((name = _do_name(tasks, windows[i])) == NULL) continue; _do_tasks_add(tasks, windows[i], name, _do_pixbuf(tasks, windows[i])); g_free(name); } _do_tasks_clean(tasks); XFree(windows); } 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; 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; } static GdkPixbuf * _do_pixbuf(Tasks * tasks, Window window) { GdkPixbuf * ret; unsigned long cnt = 0; unsigned long * buf = NULL; unsigned long i; unsigned long width; unsigned long height; unsigned long size; unsigned char * pixbuf; unsigned long j; GdkPixbuf * p; if(_tasks_get_window_property(tasks, window, TASKS_ATOM_NET_WM_ICON, XA_CARDINAL, &cnt, (void*)&buf) != 0) return NULL; for(i = 0; i < cnt - 3; i++) { width = buf[i]; height = buf[i + 1]; if(i + 2 + (width * height) > cnt) break; if(width == 0 || height == 0 || width != height) continue; size = width * height * 4; if((pixbuf = malloc(size)) == NULL) return NULL; for(i+=2, j = 0; j < size; i++) { pixbuf[j++] = (buf[i] >> 16) & 0xff; /* red */ pixbuf[j++] = (buf[i] >> 8) & 0xff; /* green */ pixbuf[j++] = buf[i] & 0xff; /* blue */ pixbuf[j++] = buf[i] >> 24; /* alpha */ } p = gdk_pixbuf_new_from_data(pixbuf, GDK_COLORSPACE_RGB, TRUE, 8, width, height, width * 4, (GdkPixbufDestroyNotify)free, NULL); XFree(buf); if(width == tasks->icon_width) return p; ret = gdk_pixbuf_scale_simple(p, tasks->icon_width, tasks->icon_height, GDK_INTERP_BILINEAR); g_object_unref(p); return ret; } return NULL; } static int _do_tasks_add(Tasks * tasks, Window window, char const * name, GdkPixbuf * pixbuf) { size_t i; Task * p = NULL; Task ** q; for(i = 0; i < tasks->tasks_cnt; i++) if(tasks->tasks[i]->window == window) break; if(i < tasks->tasks_cnt) { p = tasks->tasks[i]; _task_set(p, name, pixbuf); p->delete = FALSE; } else { if((q = realloc(tasks->tasks, (tasks->tasks_cnt + 1) * sizeof(*q))) == NULL) return 1; tasks->tasks = q; if((p = _task_new(tasks, window, name, pixbuf)) == NULL) return 1; tasks->tasks[tasks->tasks_cnt++] = p; gtk_widget_show_all(p->widget); gtk_box_pack_start(GTK_BOX(tasks->hbox), p->widget, FALSE, TRUE, 0); #ifdef EMBEDDED gtk_box_reorder_child(GTK_BOX(tasks->hbox), p->widget, 0); #endif } return 0; } static void _do_tasks_clean(Tasks * tasks) { size_t i; size_t cnt; size_t j; Task ** q; for(i = 0, cnt = tasks->tasks_cnt; i < cnt;) { if(tasks->tasks[i]->delete == FALSE) { i++; continue; } _task_delete(tasks->tasks[i]); cnt--; for(j = i; j < cnt; j++) tasks->tasks[j] = tasks->tasks[j + 1]; if((q = realloc(tasks->tasks, cnt * sizeof(*q))) != NULL || cnt == 0) tasks->tasks = q; } tasks->tasks_cnt = cnt; } static int _do_typehint_normal(Tasks * tasks, Window window) { Atom typehint; Atom * p; unsigned long cnt = 0; if(_tasks_get_window_property(tasks, window, TASKS_ATOM_NET_WM_WINDOW_TYPE, XA_ATOM, &cnt, (void*)&p) == 0) { typehint = *p; XFree(p); return typehint == tasks->atom[ TASKS_ATOM_NET_WM_WINDOW_TYPE_NORMAL] ? 0 : 1; } /* FIXME return 1 if WM_TRANSIENT_FOR is set */ return 0; } /* callbacks */ /* on_clicked */ static void _clicked_activate(Task * task); static void _on_clicked(GtkWidget * widget, gpointer data) { Task * task = data; _clicked_activate(task); #ifdef EMBEDDED gtk_box_reorder_child(GTK_BOX(task->tasks->hbox), widget, 0); #endif } /* on_close */ static void _on_close(GtkWidget * widget, gpointer data) { Task * task = data; GdkDisplay * display; XEvent xev; display = task->tasks->display; xev.xclient.type = ClientMessage; xev.xclient.window = task->window; xev.xclient.message_type = task->tasks->atom[ TASKS_ATOM_NET_CLOSE_WINDOW]; xev.xclient.format = 32; xev.xclient.data.l[0] = gdk_x11_display_get_user_time(display); xev.xclient.data.l[1] = 2; gdk_error_trap_push(); XSendEvent(GDK_DISPLAY_XDISPLAY(display), GDK_WINDOW_XWINDOW(task->tasks->root), False, SubstructureNotifyMask | SubstructureRedirectMask, &xev); gdk_error_trap_pop(); } static void _clicked_activate(Task * task) { GdkDisplay * display; XEvent xev; display = task->tasks->display; xev.xclient.type = ClientMessage; xev.xclient.window = task->window; xev.xclient.message_type = task->tasks->atom[ TASKS_ATOM_NET_ACTIVE_WINDOW]; xev.xclient.format = 32; xev.xclient.data.l[0] = 2; xev.xclient.data.l[1] = gdk_x11_display_get_user_time(display); xev.xclient.data.l[2] = GDK_WINDOW_XWINDOW(task->tasks->root); gdk_error_trap_push(); XSendEvent(GDK_DISPLAY_XDISPLAY(display), GDK_WINDOW_XWINDOW(task->tasks->root), False, SubstructureNotifyMask | SubstructureRedirectMask, &xev); gdk_error_trap_pop(); } /* 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_popup */ static gboolean _on_popup(GtkWidget * widget, gpointer data) { Task * task = data; GtkWidget * menu; GtkWidget * menuitem; menu = gtk_menu_new(); menuitem = gtk_image_menu_item_new_from_stock(GTK_STOCK_CLOSE, NULL); g_signal_connect(G_OBJECT(menuitem), "activate", G_CALLBACK(_on_close), task); gtk_menu_shell_append(GTK_MENU_SHELL(menu), menuitem); gtk_widget_show_all(menu); gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, task, 2, gtk_get_current_event_time()); return TRUE; } /* on_screen_changed */ static 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); }