vcs.maemo.org Git - eyes-widget/blob - src/eyes.c

   1 /* $Id: eyes.c 2397 2007-01-17 17:46:35Z nick $
   2  *
   3  * Copyright (c) Benedikt Meurer <benedikt.meurer@unix-ag.uni-siegen.de>>
   4  * Copyright (c) Danny Milosavljevic <danny_milo@gmx.net>
   5  * Copyright (c) Dave Camp
   6  * Copyright (c) Davyd Madeley  <davyd@madeley.id.au>
   7  * Copyright (c) Nick Schermer <nick@xfce.org>
   8  * Copyright (c) Mikko Vartiainen <mvartiainen@gmail.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the Free
  12  * Software Foundation; either version 2 of the License, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along with
  21  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  22  * Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #ifdef HAVE_MATH_H
  30 #include <math.h>
  31 #endif
  32
  33 #include <sys/types.h>
  34 #include <dirent.h>
  35 #include <string.h>
  36
  37 #include <libhildondesktop/libhildondesktop.h>
  38
  39 #include "eyes.h"
  40 #include "themes.h"
  41 #include "accelerometer.h"
  42
  43 /* for xml: */
  44 #define EYES_ROOT      "Eyes"
  45 #define DEFAULTTHEME   "Default"
  46 #define UPDATE_TIMEOUT 100
  47
  48 #define EYES_PLUGIN_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE (obj,\
  49                                                                                  EYES_TYPE_HOME_PLUGIN,\
  50                                                                                  EyesPluginContent))
  51
  52 HD_DEFINE_PLUGIN_MODULE (EyesPlugin, eyes_plugin,      HD_TYPE_HOME_PLUGIN_ITEM)
  53
  54 /*****************************
  55  *** Eyes Plugin Functions ***
  56  *****************************/
  57 static void
  58 calculate_pupil_xy (EyesPluginContent *eyes_applet,
  59                     gint x, gint y,
  60                     gint *pupil_x, gint *pupil_y, GtkWidget* widget)
  61 {
  62         double sina;
  63         double cosa;
  64         double h;
  65         double temp;
  66         double nx, ny;
  67
  68         gfloat xalign, yalign;
  69         gint width, height;
  70
  71         width = GTK_WIDGET(widget)->allocation.width;
  72         height = GTK_WIDGET(widget)->allocation.height;
  73         gtk_misc_get_alignment(GTK_MISC(widget),  &xalign, &yalign);
  74
  75     nx = width*x/1000.0;
  76     ny = height*y/1000.0;
  77
  78         h = hypot (nx, ny);
  79
  80     if ( nx*nx/((eyes_applet->eye_width/2.0 - eyes_applet->pupil_width / 2)*(eyes_applet->eye_width/2.0 - eyes_applet->pupil_width/2)) + ny*ny/((eyes_applet->eye_height/2 - eyes_applet->pupil_height/2)*(eyes_applet->eye_height/2 - eyes_applet->pupil_height/2)) < 1 )
  81         {
  82                         *pupil_x = nx + eyes_applet->eye_width / 2;
  83                         *pupil_y = ny + eyes_applet->eye_height / 2;
  84                         return;
  85         }
  86
  87         sina = nx / h;
  88         cosa = ny / h;
  89
  90         temp = hypot ((eyes_applet->eye_width / 2) * sina, (eyes_applet->eye_height / 2) * cosa);
  91         temp -= hypot ((eyes_applet->pupil_width / 2) * sina, (eyes_applet->pupil_height / 2) * cosa);
  92         temp -= hypot ((eyes_applet->wall_thickness / 2) * sina, (eyes_applet->wall_thickness / 2) * cosa);
  93
  94         *pupil_x = temp * sina + (eyes_applet->eye_width / 2);
  95         *pupil_y = temp * cosa + (eyes_applet->eye_height / 2);
  96 }
  97
  98
  99
 100 static void
 101 draw_eye (EyesPluginContent *eyes,
 102           gint    eye_num,
 103           gint    pupil_x,
 104           gint    pupil_y)
 105 {
 106     GdkPixbuf *pixbuf;
 107     GdkRectangle rect, r1, r2;
 108
 109     pixbuf = gdk_pixbuf_copy (eyes->eye_image);
 110     r1.x = pupil_x - eyes->pupil_width / 2;
 111     r1.y = pupil_y - eyes->pupil_height / 2;
 112     r1.width = eyes->pupil_width;
 113     r1.height = eyes->pupil_height;
 114     r2.x = 0;
 115     r2.y = 0;
 116     r2.width = eyes->eye_width;
 117     r2.height = eyes->eye_height;
 118     if (gdk_rectangle_intersect (&r1, &r2, &rect))
 119     {
 120         gdk_pixbuf_composite (eyes->pupil_image, pixbuf,
 121                            rect.x,
 122                            rect.y,
 123                            rect.width,
 124                                  rect.height,
 125                                  pupil_x - eyes->pupil_width / 2,
 126                            pupil_y - eyes->pupil_height / 2, 1.0, 1.0,
 127                                  GDK_INTERP_BILINEAR,
 128                                255);
 129         gtk_image_set_from_pixbuf (GTK_IMAGE (eyes->eyes[eye_num]),
 130                               pixbuf);
 131     }
 132     g_object_unref (G_OBJECT (pixbuf));
 133 }
 134
 135
 136
 137 static gint
 138 timer_cb(EyesPluginContent *eyes)
 139 {
 140     gint x, y, z;
 141     gint pupil_x, pupil_y;
 142     gint i;
 143
 144     for (i = 0; i < eyes->num_eyes; i++)
 145     {
 146         if (GTK_WIDGET_REALIZED(eyes->eyes[i]))
 147         {
 148             accel_read(&x, &y, &z);
 149             x = -x;
 150             y = -y;
 151
 152             if ((x != eyes->pointer_last_x[i]) || (y != eyes->pointer_last_y[i]))
 153             {
 154
 155                 calculate_pupil_xy (eyes, x, y, &pupil_x, &pupil_y, eyes->eyes[i]);
 156                 draw_eye (eyes, i, pupil_x, pupil_y);
 157
 158                 eyes->pointer_last_x[i] = x;
 159                 eyes->pointer_last_y[i] = y;
 160             }
 161         }
 162     }
 163
 164     return TRUE;
 165 }
 166
 167
 168
 169 static void
 170 properties_load(EyesPluginContent *eyes)
 171 {
 172     gchar *path;
 173
 174     if (eyes->active_theme)
 175         path = g_build_filename(THEMESDIR, eyes->active_theme, NULL);
 176     else
 177         path = g_build_filename(THEMESDIR, DEFAULTTHEME, NULL);
 178
 179     load_theme(eyes, path);
 180
 181     g_free(path);
 182 }
 183
 184
 185
 186 static void
 187 setup_eyes(EyesPluginContent *eyes)
 188 {
 189     g_warning ("setup_eyes");
 190     int i;
 191
 192     if (eyes->hbox != NULL)
 193     {
 194         gtk_widget_destroy(eyes->hbox);
 195         eyes->hbox = NULL;
 196     }
 197
 198     eyes->hbox = gtk_hbox_new(FALSE, 0);
 199     gtk_container_add(GTK_CONTAINER(eyes->align), GTK_WIDGET(eyes->hbox));
 200
 201     eyes->eyes = g_new0 (GtkWidget *, eyes->num_eyes);
 202         eyes->pointer_last_x = g_new0 (gint, eyes->num_eyes);
 203         eyes->pointer_last_y = g_new0 (gint, eyes->num_eyes);
 204
 205     for (i = 0; i < eyes->num_eyes; i++)
 206     {
 207         eyes->eyes[i] = gtk_image_new ();
 208
 209         gtk_widget_set_size_request(GTK_WIDGET(eyes->eyes[i]),
 210                                     eyes->eye_width,
 211                                     eyes->eye_height);
 212
 213         gtk_widget_show(eyes->eyes[i]);
 214
 215         gtk_box_pack_start(GTK_BOX(eyes->hbox), eyes->eyes[i],
 216                            FALSE, FALSE, 0);
 217
 218                 if ((eyes->num_eyes != 1) && (i == 0))
 219             gtk_misc_set_alignment (GTK_MISC (eyes->eyes[i]), 1.0, 0.5);
 220                 else if ((eyes->num_eyes != 1) && (i == eyes->num_eyes - 1))
 221                         gtk_misc_set_alignment (GTK_MISC (eyes->eyes[i]), 0.0, 0.5);
 222                 else
 223                         gtk_misc_set_alignment (GTK_MISC (eyes->eyes[i]), 0.5, 0.5);
 224
 225                 eyes->pointer_last_x[i] = G_MAXINT;
 226                 eyes->pointer_last_y[i] = G_MAXINT;
 227
 228                 draw_eye (eyes, i,
 229                               eyes->eye_width / 2,
 230                   eyes->eye_height / 2);
 231     }
 232
 233     gtk_widget_show(eyes->hbox);
 234 }
 235
 236
 237
 238 static gboolean
 239 eyes_applet_fill(EyesPluginContent *eyes)
 240 {
 241     gtk_widget_show_all(GTK_WIDGET(eyes->align));
 242
 243     if (eyes->timeout_id == 0)
 244     {
 245         eyes->timeout_id = g_timeout_add (UPDATE_TIMEOUT,
 246                                           (GtkFunction)timer_cb, eyes);
 247     }
 248
 249     return TRUE;
 250 }
 251
 252
 253
 254
 255 /*
 256 static void
 257 combobox_changed (GtkComboBox    *combobox,
 258                   EyesPluginContent     *eyes)
 259 {
 260         gchar *selected = gtk_combo_box_get_active_text (combobox);
 261
 262         if (eyes->active_theme)
 263                 g_free (eyes->active_theme);
 264
 265         eyes->active_theme = g_strdup (selected);
 266         g_free (selected);
 267
 268         properties_load(eyes);
 269     setup_eyes(eyes);
 270     eyes_applet_fill(eyes);
 271 }
 272 */
 273
 274 /*
 275 static void
 276 eyes_properties_dialog (XfcePanelPlugin *plugin,
 277                         EyesPluginContent      *eyes)
 278 {
 279         GtkWidget   *dlg, *hbox, *label, *combobox;
 280         GDir        *dir;
 281         gint         i;
 282         gchar       *current;
 283         const gchar *entry;
 284
 285         xfce_panel_plugin_block_menu (plugin);
 286
 287         dlg = xfce_titled_dialog_new_with_buttons (_("Eyes"),
 288                                                   GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (plugin))),
 289                                                   GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_NO_SEPARATOR,
 290                                                   GTK_STOCK_CLOSE, GTK_RESPONSE_OK,
 291                                                   NULL);
 292
 293     gtk_window_set_position   (GTK_WINDOW (dlg), GTK_WIN_POS_CENTER);
 294     gtk_window_set_icon_name  (GTK_WINDOW (dlg), "xfce4-settings");
 295
 296     g_signal_connect (dlg, "response", G_CALLBACK (eyes_properties_dialog_response),
 297                       eyes);
 298
 299         hbox = gtk_hbox_new(FALSE, 6);
 300         gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), hbox, FALSE, FALSE, 0);
 301         gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
 302
 303         label = gtk_label_new_with_mnemonic (_("_Select a theme:"));
 304         gtk_box_pack_start (GTK_BOX(hbox), label, FALSE, FALSE, 0);
 305
 306         combobox = gtk_combo_box_new_text ();
 307     gtk_box_pack_start (GTK_BOX (hbox), combobox, FALSE, TRUE, 0);
 308
 309     if (eyes->active_theme)
 310                 current = g_strdup (eyes->active_theme);
 311         else
 312                 current = g_strdup (DEFAULTTHEME);
 313
 314     if ((dir = g_dir_open(THEMESDIR, 0, NULL)) == NULL)
 315     {
 316         gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), current);
 317     }
 318     else
 319     {
 320         for (i = 0; (entry = g_dir_read_name(dir)) != NULL; i++)
 321         {
 322             gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), entry);
 323
 324             if (strcmp (entry, current) == 0)
 325                                 gtk_combo_box_set_active (GTK_COMBO_BOX(combobox), i);
 326                 }
 327
 328         g_dir_close(dir);
 329         }
 330
 331         g_free (current);
 332
 333         gtk_label_set_mnemonic_widget (GTK_LABEL (label), combobox);
 334
 335     g_signal_connect(G_OBJECT(combobox), "changed",
 336             G_CALLBACK(combobox_changed), eyes);
 337
 338     gtk_widget_show_all (dlg);
 339 }
 340 */
 341
 342
 343 /******************************
 344  *** Panel Plugin Functions ***
 345  ******************************/
 346 static void
 347 eyes_free_data(EyesPluginContent      *eyes)
 348 {
 349     g_warning("eyes_free_data");
 350     g_return_if_fail(eyes != NULL);
 351
 352     if (eyes->timeout_id != 0)
 353         g_source_remove (eyes->timeout_id);
 354
 355     g_free (eyes->eyes);
 356         g_free (eyes->pointer_last_x);
 357         g_free (eyes->pointer_last_y);
 358
 359         if (eyes->active_theme != NULL)
 360                 g_free (eyes->active_theme);
 361
 362     if (eyes->eye_image != NULL)
 363         g_object_unref (G_OBJECT (eyes->eye_image));
 364
 365     if (eyes->pupil_image != NULL)
 366         g_object_unref (G_OBJECT (eyes->pupil_image));
 367
 368     if (eyes->theme_dir != NULL)
 369         g_free(eyes->theme_dir);
 370
 371     if (eyes->theme_name != NULL)
 372         g_free(eyes->theme_name);
 373
 374     if (eyes->eye_filename != NULL)
 375         g_free(eyes->eye_filename);
 376
 377     if (eyes->pupil_filename != NULL)
 378         g_free(eyes->pupil_filename);
 379
 380     g_free(eyes);
 381 }
 382
 383 static void
 384 eyes_read_rc_file (EyesPluginContent      *eyes)
 385 {
 386     g_warning ("eyes_read_rc");
 387 /*    XfceRc      *rc;
 388     gchar       *file;
 389     gchar const *tmp;
 390
 391     if (eyes->active_theme != NULL)
 392     {
 393         g_free (eyes->active_theme);
 394         eyes->active_theme = NULL;
 395     }
 396
 397     if ((file = xfce_panel_plugin_lookup_rc_file (plugin)) != NULL)
 398     {
 399         rc = xfce_rc_simple_open (file, TRUE);
 400         g_free (file);
 401
 402         if (rc != NULL)
 403         {
 404             tmp = xfce_rc_read_entry (rc, "theme", DEFAULTTHEME);
 405
 406             if (tmp != NULL)
 407                 eyes->active_theme = g_strdup (tmp);
 408
 409             xfce_rc_close (rc);
 410         }
 411     }
 412 */
 413     if (eyes->active_theme == NULL)
 414                 eyes->active_theme = g_strdup (DEFAULTTHEME);
 415 }
 416
 417 /*
 418 static void
 419 eyes_write_rc_file (XfcePanelPlugin *plugin,
 420                     EyesPluginContent      *eyes)
 421 {
 422     gchar  *file;
 423     XfceRc *rc;
 424
 425     if (!(file = xfce_panel_plugin_save_location (plugin, TRUE)))
 426         return;
 427
 428     rc = xfce_rc_simple_open (file, FALSE);
 429     g_free (file);
 430
 431     if (!rc)
 432         return;
 433
 434     if (eyes->active_theme != NULL)
 435         xfce_rc_write_entry (rc, "theme", eyes->active_theme);
 436
 437     xfce_rc_close (rc);
 438 }
 439 */
 440
 441 static EyesPluginContent *
 442 eyes_plugin_new ()
 443 {
 444     g_warning ("eyes_plugin_new");
 445     EyesPluginContent *eyes;
 446
 447     eyes = g_new0(EyesPluginContent, 1);
 448
 449     eyes->align = gtk_alignment_new (0.5, 0.5, 1.0, 1.0);
 450
 451     gtk_widget_show(GTK_WIDGET(eyes->align));
 452
 453     eyes_read_rc_file (eyes);
 454
 455     properties_load(eyes);
 456     setup_eyes(eyes);
 457     eyes_applet_fill(eyes);
 458
 459     return eyes;
 460 }
 461
 462 static void eyes_check_desktop (GObject *gobject, GParamSpec *pspec, EyesPluginContent *eyes)
 463 {
 464         g_warning ("eyes_check_desktop");
 465         gchar *name = pspec->name;
 466         gboolean status;
 467         g_object_get (gobject, name, &status, NULL);
 468         if (status) {
 469             eyes_applet_fill(eyes);
 470         } else if (eyes->timeout_id != 0) {
 471         g_source_remove (eyes->timeout_id);
 472                 eyes->timeout_id = 0;
 473         }
 474 }
 475
 476 static void eyes_plugin_dispose (GObject *object)
 477 {
 478         g_warning ("eyes_plugin_dispose");
 479
 480         G_OBJECT_CLASS (eyes_plugin_parent_class)->dispose (object);
 481 }
 482
 483 static void eyes_plugin_finalize (GObject *object)
 484 {
 485         g_warning ("eyes_plugin_finalize");
 486         EyesPlugin *self = EYES_HOME_PLUGIN (object);
 487
 488     eyes_free_data(self->priv);
 489
 490         G_OBJECT_CLASS (eyes_plugin_parent_class)->finalize (object);
 491 }
 492
 493 static void
 494 eyes_plugin_realize (GtkWidget *widget)
 495 {
 496     g_warning ("eyes_plugin_realize");
 497     GdkScreen *screen = gtk_widget_get_screen (widget);
 498     gtk_widget_set_colormap (widget, gdk_screen_get_rgba_colormap (screen));
 499     gtk_widget_set_app_paintable (widget, TRUE);
 500
 501     GTK_WIDGET_CLASS (eyes_plugin_parent_class)->realize (widget);
 502 }
 503
 504 static gboolean
 505 eyes_plugin_expose_event (GtkWidget *widget, GdkEventExpose *event)
 506 {
 507     g_warning ("eyes_plugin_expose_event");
 508     cairo_t *cr;
 509
 510     cr = gdk_cairo_create (GDK_DRAWABLE (widget->window));
 511     gdk_cairo_region (cr, event->region);
 512     cairo_clip (cr);
 513
 514     cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
 515     cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.0);
 516     cairo_paint (cr);
 517
 518     cairo_destroy (cr);
 519
 520     return GTK_WIDGET_CLASS (eyes_plugin_parent_class)->expose_event (widget, event);
 521 }
 522
 523 static void
 524 eyes_plugin_init (EyesPlugin *desktop_plugin)
 525 {
 526     g_warning ("eyes_plugin_init");
 527     EyesPluginContent *eyes;
 528
 529     eyes = eyes_plugin_new (desktop_plugin);
 530     desktop_plugin->priv = eyes;
 531
 532     g_signal_connect (desktop_plugin, "notify::is-on-current-desktop",
 533         G_CALLBACK (eyes_check_desktop), eyes);
 534
 535     gtk_container_add (GTK_CONTAINER (desktop_plugin), eyes->align);
 536 }
 537
 538 static void
 539 eyes_plugin_class_init (EyesPluginClass *klass) {
 540     g_warning ("eyes_plugin_class_init");
 541     GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 542     GObjectClass *object_class = G_OBJECT_CLASS (klass);
 543
 544         object_class->dispose = eyes_plugin_dispose;
 545         object_class->finalize = eyes_plugin_finalize;
 546
 547     widget_class->realize = eyes_plugin_realize;
 548     widget_class->expose_event = eyes_plugin_expose_event;
 549     g_type_class_add_private (klass, sizeof (EyesPluginContent));
 550 }
 551
 552 static void
 553 eyes_plugin_class_finalize (EyesPluginClass *class) {}
 554