release/src/router/apcupsd/src/gapcmon/eggtrayicon.c

   1
   2 /* eggtrayicon.c           serial-0085-0 ***************************************
   3  * Copyright (C) 2002 Anders Carlsson <andersca@gnu.org>
   4  *
   5  * Modified by James Scott, Jr <skoona@users.sourceforge.net>
   6  * - To enhance events and size management  4/2006
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 02111-1307, USA.
  22  */
  23
  24 #include <string.h>
  25 #include <libintl.h>
  26
  27 #include <gdkconfig.h>
  28
  29 #include <gdk/gdkx.h>
  30 #include <X11/Xatom.h>
  31
  32 #if defined (GDK_WINDOWING_WIN32)
  33 #include <gdk/gdkwin32.h>
  34 #endif
  35
  36 #include "eggtrayicon.h"
  37
  38
  39 #define _(x) x
  40 #define N_(x) x
  41
  42 #define SYSTEM_TRAY_REQUEST_DOCK    0
  43 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  44 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  45
  46 #define SYSTEM_TRAY_ORIENTATION_HORZ 0
  47 #define SYSTEM_TRAY_ORIENTATION_VERT 1
  48
  49 enum {
  50    PROP_0,
  51    PROP_ORIENTATION
  52 };
  53
  54 static GtkPlugClass *parent_class = NULL;
  55
  56 static void egg_tray_icon_init(EggTrayIcon * icon);
  57 static void egg_tray_icon_class_init(EggTrayIconClass * klass);
  58
  59 static void egg_tray_icon_get_property(GObject * object,
  60    guint prop_id, GValue * value, GParamSpec * pspec);
  61
  62 static void egg_tray_icon_realize(GtkWidget * widget);
  63 static void egg_tray_icon_unrealize(GtkWidget * widget);
  64
  65 static void egg_tray_icon_add (GtkContainer *container,
  66                                GtkWidget    *widget);
  67
  68 static void egg_tray_icon_update_manager_window(EggTrayIcon * icon,
  69    gboolean dock_if_realized);
  70 static void egg_tray_icon_manager_window_destroyed(EggTrayIcon * icon);
  71
  72 GType egg_tray_icon_get_type(void)
  73 {
  74    static GType our_type = 0;
  75
  76    if (our_type == 0) {
  77       static const GTypeInfo our_info = {
  78          sizeof(EggTrayIconClass),
  79          (GBaseInitFunc) NULL,
  80          (GBaseFinalizeFunc) NULL,
  81          (GClassInitFunc) egg_tray_icon_class_init,
  82          NULL,                     /* class_finalize */
  83          NULL,                     /* class_data */
  84          sizeof(EggTrayIcon),
  85          0,                        /* n_preallocs */
  86          (GInstanceInitFunc) egg_tray_icon_init
  87       };
  88
  89       our_type = g_type_register_static(GTK_TYPE_PLUG, "EggTrayIcon", &our_info, 0);
  90    }
  91
  92    return our_type;
  93 }
  94
  95 static void egg_tray_icon_init(EggTrayIcon * icon)
  96 {
  97    icon->stamp = 1;
  98    icon->orientation = GTK_ORIENTATION_HORIZONTAL;
  99
 100    gtk_widget_add_events(GTK_WIDGET(icon), GDK_PROPERTY_CHANGE_MASK |
 101       GDK_BUTTON_PRESS_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
 102 }
 103
 104 static void egg_tray_icon_class_init(EggTrayIconClass * klass)
 105 {
 106    GObjectClass *gobject_class = (GObjectClass *) klass;
 107    GtkWidgetClass *widget_class = (GtkWidgetClass *) klass;
 108    GtkContainerClass *container_class = (GtkContainerClass *)klass;
 109
 110    parent_class = g_type_class_peek_parent(klass);
 111
 112    gobject_class->get_property = egg_tray_icon_get_property;
 113
 114    widget_class->realize = egg_tray_icon_realize;
 115    widget_class->unrealize = egg_tray_icon_unrealize;
 116
 117    container_class->add = egg_tray_icon_add;
 118
 119    g_object_class_install_property(gobject_class,
 120       PROP_ORIENTATION,
 121       g_param_spec_enum("orientation",
 122          "Orientation",
 123          "The orientation of the tray.",
 124          GTK_TYPE_ORIENTATION, GTK_ORIENTATION_HORIZONTAL, G_PARAM_READABLE));
 125
 126 #if defined (GDK_WINDOWING_WIN32)
 127    g_warning("Port eggtrayicon to Win32");
 128 #endif
 129 }
 130
 131 static void
 132 egg_tray_icon_get_property(GObject * object,
 133    guint prop_id, GValue * value, GParamSpec * pspec)
 134 {
 135    EggTrayIcon *icon = EGG_TRAY_ICON(object);
 136
 137    switch (prop_id) {
 138    case PROP_ORIENTATION:
 139       g_value_set_enum(value, icon->orientation);
 140       break;
 141    default:
 142       G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 143       break;
 144    }
 145 }
 146
 147 static void egg_tray_icon_get_orientation_property(EggTrayIcon * icon)
 148 {
 149    Display *xdisplay;
 150    Atom type;
 151    int format;
 152    union {
 153       gulong *prop;
 154       guchar *prop_ch;
 155    } prop = {
 156    NULL};
 157    gulong nitems;
 158    gulong bytes_after;
 159    int error, result;
 160
 161    g_assert(icon->manager_window != None);
 162
 163    xdisplay = GDK_DISPLAY_XDISPLAY(gtk_widget_get_display(GTK_WIDGET(icon)));
 164
 165    gdk_error_trap_push();
 166    type = None;
 167    result = XGetWindowProperty(xdisplay,
 168       icon->manager_window,
 169       icon->orientation_atom,
 170       0, G_MAXLONG, FALSE,
 171       XA_CARDINAL, &type, &format, &nitems, &bytes_after, &(prop.prop_ch));
 172    error = gdk_error_trap_pop();
 173
 174    if (error || result != Success)
 175       return;
 176
 177    if (type == XA_CARDINAL) {
 178       GtkOrientation orientation;
 179
 180       orientation = (prop.prop[0] == SYSTEM_TRAY_ORIENTATION_HORZ) ?
 181          GTK_ORIENTATION_HORIZONTAL : GTK_ORIENTATION_VERTICAL;
 182
 183       if (icon->orientation != orientation) {
 184          icon->orientation = orientation;
 185
 186          g_object_notify(G_OBJECT(icon), "orientation");
 187       }
 188    }
 189
 190    if (prop.prop)
 191       XFree(prop.prop);
 192 }
 193
 194 static GdkFilterReturn
 195 egg_tray_icon_manager_filter(GdkXEvent * xevent, GdkEvent * event,
 196    gpointer user_data)
 197 {
 198    EggTrayIcon *icon = user_data;
 199    XEvent *xev = (XEvent *) xevent;
 200
 201    if (xev->xany.type == ClientMessage &&
 202       xev->xclient.message_type == icon->manager_atom &&
 203       xev->xclient.data.l[1] == icon->selection_atom) {
 204       egg_tray_icon_update_manager_window(icon, TRUE);
 205    } else if (xev->xany.window == icon->manager_window) {
 206       if (xev->xany.type == PropertyNotify &&
 207          xev->xproperty.atom == icon->orientation_atom) {
 208          egg_tray_icon_get_orientation_property(icon);
 209       }
 210       if (xev->xany.type == DestroyNotify) {
 211          egg_tray_icon_manager_window_destroyed(icon);
 212       }
 213    }
 214    return GDK_FILTER_CONTINUE;
 215 }
 216
 217 static void egg_tray_icon_unrealize(GtkWidget * widget)
 218 {
 219    EggTrayIcon *icon = EGG_TRAY_ICON(widget);
 220    GdkWindow *root_window;
 221
 222    if (icon->manager_window != None) {
 223       GdkWindow *gdkwin;
 224
 225       gdkwin = gdk_window_lookup_for_display(gtk_widget_get_display(widget),
 226          icon->manager_window);
 227
 228       gdk_window_remove_filter(gdkwin, egg_tray_icon_manager_filter, icon);
 229    }
 230
 231    root_window = gdk_screen_get_root_window(gtk_widget_get_screen(widget));
 232
 233    gdk_window_remove_filter(root_window, egg_tray_icon_manager_filter, icon);
 234
 235    if (GTK_WIDGET_CLASS(parent_class)->unrealize)
 236       (*GTK_WIDGET_CLASS(parent_class)->unrealize) (widget);
 237 }
 238
 239 static void
 240 egg_tray_icon_send_manager_message(EggTrayIcon * icon,
 241    long message, Window window, long data1, long data2, long data3)
 242 {
 243    XClientMessageEvent ev;
 244    Display *display;
 245
 246    ev.type = ClientMessage;
 247    ev.window = window;
 248    ev.message_type = icon->system_tray_opcode_atom;
 249    ev.format = 32;
 250    ev.data.l[0] = gdk_x11_get_server_time(GTK_WIDGET(icon)->window);
 251    ev.data.l[1] = message;
 252    ev.data.l[2] = data1;
 253    ev.data.l[3] = data2;
 254    ev.data.l[4] = data3;
 255
 256    display = GDK_DISPLAY_XDISPLAY(gtk_widget_get_display(GTK_WIDGET(icon)));
 257
 258    gdk_error_trap_push();
 259    XSendEvent(display, icon->manager_window, False, NoEventMask, (XEvent *) & ev);
 260    XSync(display, False);
 261    gdk_error_trap_pop();
 262 }
 263
 264 static void egg_tray_icon_send_dock_request(EggTrayIcon * icon)
 265 {
 266    egg_tray_icon_send_manager_message(icon,
 267       SYSTEM_TRAY_REQUEST_DOCK,
 268       icon->manager_window, gtk_plug_get_id(GTK_PLUG(icon)), 0, 0);
 269 }
 270
 271 static void
 272 egg_tray_icon_update_manager_window(EggTrayIcon * icon, gboolean dock_if_realized)
 273 {
 274    Display *xdisplay;
 275
 276    if (icon->manager_window != None)
 277       return;
 278
 279    xdisplay = GDK_DISPLAY_XDISPLAY(gtk_widget_get_display(GTK_WIDGET(icon)));
 280
 281    XGrabServer(xdisplay);
 282
 283    icon->manager_window = XGetSelectionOwner(xdisplay, icon->selection_atom);
 284
 285    if (icon->manager_window != None)
 286       XSelectInput(xdisplay,
 287          icon->manager_window, StructureNotifyMask | PropertyChangeMask);
 288
 289    XUngrabServer(xdisplay);
 290    XFlush(xdisplay);
 291
 292    if (icon->manager_window != None) {
 293       GdkWindow *gdkwin;
 294
 295       gdkwin =
 296          gdk_window_lookup_for_display(gtk_widget_get_display(GTK_WIDGET(icon)),
 297          icon->manager_window);
 298
 299       gdk_window_add_filter(gdkwin, egg_tray_icon_manager_filter, icon);
 300
 301       if (dock_if_realized && GTK_WIDGET_REALIZED(icon))
 302          egg_tray_icon_send_dock_request(icon);
 303
 304       egg_tray_icon_get_orientation_property(icon);
 305    }
 306 }
 307
 308 static gboolean
 309 transparent_expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
 310 {
 311   gdk_window_clear_area (widget->window, event->area.x, event->area.y,
 312                          event->area.width, event->area.height);
 313   return FALSE;
 314 }
 315
 316 static void
 317 make_transparent_again (GtkWidget *widget, GtkStyle *previous_style,
 318                         gpointer user_data)
 319 {
 320   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 321 }
 322
 323 static void
 324 make_transparent (GtkWidget *widget, gpointer user_data)
 325 {
 326   if (GTK_WIDGET_NO_WINDOW (widget) || GTK_WIDGET_APP_PAINTABLE (widget))
 327     return;
 328
 329   gtk_widget_set_app_paintable (widget, TRUE);
 330   gtk_widget_set_double_buffered (widget, FALSE);
 331   gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 332   g_signal_connect (widget, "expose_event",
 333                     G_CALLBACK (transparent_expose_event), NULL);
 334   g_signal_connect_after (widget, "style_set",
 335                           G_CALLBACK (make_transparent_again), NULL);
 336 }
 337
 338 static void egg_tray_icon_manager_window_destroyed(EggTrayIcon * icon)
 339 {
 340    GdkWindow *gdkwin;
 341
 342    g_return_if_fail(icon->manager_window != None);
 343
 344    gdkwin = gdk_window_lookup_for_display(gtk_widget_get_display(GTK_WIDGET(icon)),
 345       icon->manager_window);
 346
 347    gdk_window_remove_filter(gdkwin, egg_tray_icon_manager_filter, icon);
 348
 349    icon->manager_window = None;
 350
 351    egg_tray_icon_update_manager_window(icon, TRUE);
 352 }
 353
 354
 355 static void egg_tray_icon_realize(GtkWidget * widget)
 356 {
 357    EggTrayIcon *icon = EGG_TRAY_ICON(widget);
 358    GdkScreen *screen;
 359    GdkDisplay *display;
 360    Display *xdisplay;
 361    char buffer[256];
 362    GdkWindow *root_window;
 363
 364    if (GTK_WIDGET_CLASS(parent_class)->realize)
 365       GTK_WIDGET_CLASS(parent_class)->realize(widget);
 366
 367    make_transparent (widget, NULL);
 368
 369    screen = gtk_widget_get_screen(widget);
 370    display = gdk_screen_get_display(screen);
 371    xdisplay = gdk_x11_display_get_xdisplay(display);
 372
 373    /* Now see if there's a manager window around */
 374    g_snprintf(buffer, sizeof(buffer),
 375       "_NET_SYSTEM_TRAY_S%d", gdk_screen_get_number(screen));
 376
 377    icon->selection_atom = XInternAtom(xdisplay, buffer, False);
 378
 379    icon->manager_atom = XInternAtom(xdisplay, "MANAGER", False);
 380
 381    icon->system_tray_opcode_atom = XInternAtom(xdisplay,
 382       "_NET_SYSTEM_TRAY_OPCODE", False);
 383
 384    icon->orientation_atom = XInternAtom(xdisplay,
 385       "_NET_SYSTEM_TRAY_ORIENTATION", False);
 386
 387    egg_tray_icon_update_manager_window(icon, FALSE);
 388    egg_tray_icon_send_dock_request(icon);
 389
 390    root_window = gdk_screen_get_root_window(screen);
 391
 392    /* Add a root window filter so that we get changes on MANAGER */
 393    gdk_window_add_filter(root_window, egg_tray_icon_manager_filter, icon);
 394 }
 395
 396 static void
 397 egg_tray_icon_add (GtkContainer *container, GtkWidget *widget)
 398 {
 399   g_signal_connect (widget, "realize",
 400                     G_CALLBACK (make_transparent), NULL);
 401   GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
 402 }
 403
 404 EggTrayIcon *egg_tray_icon_new_for_screen(GdkScreen * screen, const char *name)
 405 {
 406    g_return_val_if_fail(GDK_IS_SCREEN(screen), NULL);
 407
 408    return g_object_new(EGG_TYPE_TRAY_ICON, "screen", screen, "title", name, NULL);
 409 }
 410
 411 EggTrayIcon *egg_tray_icon_new(const gchar * name)
 412 {
 413    return g_object_new(EGG_TYPE_TRAY_ICON, "title", name, NULL);
 414 }
 415
 416 guint
 417 egg_tray_icon_send_message(EggTrayIcon * icon,
 418    gint timeout, const gchar * message, gint len)
 419 {
 420    guint stamp;
 421
 422    g_return_val_if_fail(EGG_IS_TRAY_ICON(icon), 0);
 423    g_return_val_if_fail(timeout >= 0, 0);
 424    g_return_val_if_fail(message != NULL, 0);
 425
 426    if (icon->manager_window == None)
 427       return 0;
 428
 429    if (len < 0)
 430       len = strlen(message);
 431
 432    stamp = icon->stamp++;
 433
 434    /* Get ready to send the message */
 435    egg_tray_icon_send_manager_message(icon, SYSTEM_TRAY_BEGIN_MESSAGE,
 436       (Window) gtk_plug_get_id(GTK_PLUG(icon)), timeout, len, stamp);
 437
 438    /* Now to send the actual message */
 439    gdk_error_trap_push();
 440    while (len > 0) {
 441       XClientMessageEvent ev;
 442       Display *xdisplay;
 443
 444       xdisplay = GDK_DISPLAY_XDISPLAY(gtk_widget_get_display(GTK_WIDGET(icon)));
 445
 446       ev.type = ClientMessage;
 447       ev.window = (Window) gtk_plug_get_id(GTK_PLUG(icon));
 448       ev.format = 8;
 449       ev.message_type = XInternAtom(xdisplay,
 450          "_NET_SYSTEM_TRAY_MESSAGE_DATA", False);
 451       if (len > 20) {
 452          memcpy(&ev.data, message, 20);
 453          len -= 20;
 454          message += 20;
 455       } else {
 456          memcpy(&ev.data, message, len);
 457          len = 0;
 458       }
 459
 460       XSendEvent(xdisplay,
 461          icon->manager_window, False, StructureNotifyMask, (XEvent *) & ev);
 462       XSync(xdisplay, False);
 463    }
 464    gdk_error_trap_pop();
 465
 466    return stamp;
 467 }
 468
 469 void egg_tray_icon_cancel_message(EggTrayIcon * icon, guint id)
 470 {
 471    g_return_if_fail(EGG_IS_TRAY_ICON(icon));
 472    g_return_if_fail(id > 0);
 473
 474    egg_tray_icon_send_manager_message(icon, SYSTEM_TRAY_CANCEL_MESSAGE,
 475       (Window) gtk_plug_get_id(GTK_PLUG(icon)), id, 0, 0);
 476 }
 477
 478 GtkOrientation egg_tray_icon_get_orientation(EggTrayIcon * icon)
 479 {
 480    g_return_val_if_fail(EGG_IS_TRAY_ICON(icon), GTK_ORIENTATION_HORIZONTAL);
 481
 482    return icon->orientation;
 483 }