libempathy-gtk/empathy-avatar-chooser.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2006-2007 Imendio AB.
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of version 2 of the GNU General Public
   8  * License as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Authors: Based on Novell's e-image-chooser.
  21  *          Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <string.h>
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30 #include <gio/gio.h>
  31
  32 #include <libempathy/empathy-utils.h>
  33 #include "empathy-avatar-chooser.h"
  34 #include "empathy-conf.h"
  35 #include "empathy-ui-utils.h"
  36
  37 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  38 #include <libempathy/empathy-debug.h>
  39
  40 #define AVATAR_SIZE_SAVE 96
  41 #define AVATAR_SIZE_VIEW 64
  42 #define DEFAULT_DIR DATADIR"/pixmaps/faces"
  43
  44 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarChooser)
  45 typedef struct {
  46         gchar *image_data;
  47         gsize  image_data_size;
  48 } EmpathyAvatarChooserPriv;
  49
  50 static void       avatar_chooser_finalize              (GObject              *object);
  51 static void       avatar_chooser_set_image_from_data   (EmpathyAvatarChooser *chooser,
  52                                                         gchar                *data,
  53                                                         gsize                 size);
  54 static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
  55                                                         GdkDragContext       *context,
  56                                                         gint                  x,
  57                                                         gint                  y,
  58                                                         guint                 time,
  59                                                         EmpathyAvatarChooser *chooser);
  60 static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
  61                                                         GdkDragContext       *context,
  62                                                         guint                 time,
  63                                                         EmpathyAvatarChooser *chooser);
  64 static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
  65                                                         GdkDragContext       *context,
  66                                                         gint                  x,
  67                                                         gint                  y,
  68                                                         guint                 time,
  69                                                         EmpathyAvatarChooser *chooser);
  70 static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
  71                                                         GdkDragContext       *context,
  72                                                         gint                  x,
  73                                                         gint                  y,
  74                                                         GtkSelectionData     *selection_data,
  75                                                         guint                 info,
  76                                                         guint                 time,
  77                                                         EmpathyAvatarChooser *chooser);
  78 static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
  79                                                         EmpathyAvatarChooser *chooser);
  80
  81 enum {
  82         CHANGED,
  83         LAST_SIGNAL
  84 };
  85
  86 static guint signals [LAST_SIGNAL];
  87
  88 G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
  89
  90 /*
  91  * Drag and drop stuff
  92  */
  93 #define URI_LIST_TYPE "text/uri-list"
  94
  95 enum DndTargetType {
  96         DND_TARGET_TYPE_URI_LIST
  97 };
  98
  99 static const GtkTargetEntry drop_types[] = {
 100         { URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
 101 };
 102
 103 static void
 104 empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
 105 {
 106         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 107
 108         object_class->finalize = avatar_chooser_finalize;
 109
 110         signals[CHANGED] =
 111                 g_signal_new ("changed",
 112                               G_TYPE_FROM_CLASS (klass),
 113                               G_SIGNAL_RUN_LAST,
 114                               0,
 115                               NULL, NULL,
 116                               g_cclosure_marshal_VOID__VOID,
 117                               G_TYPE_NONE, 0);
 118
 119         g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
 120 }
 121
 122 static void
 123 empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
 124 {
 125         EmpathyAvatarChooserPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (chooser,
 126                 EMPATHY_TYPE_AVATAR_CHOOSER, EmpathyAvatarChooserPriv);
 127
 128         chooser->priv = priv;
 129         gtk_drag_dest_set (GTK_WIDGET (chooser),
 130                            GTK_DEST_DEFAULT_ALL,
 131                            drop_types,
 132                            G_N_ELEMENTS (drop_types),
 133                            GDK_ACTION_COPY);
 134
 135         g_signal_connect (chooser, "drag-motion",
 136                           G_CALLBACK (avatar_chooser_drag_motion_cb),
 137                           chooser);
 138         g_signal_connect (chooser, "drag-leave",
 139                           G_CALLBACK (avatar_chooser_drag_leave_cb),
 140                           chooser);
 141         g_signal_connect (chooser, "drag-drop",
 142                           G_CALLBACK (avatar_chooser_drag_drop_cb),
 143                           chooser);
 144         g_signal_connect (chooser, "drag-data-received",
 145                           G_CALLBACK (avatar_chooser_drag_data_received_cb),
 146                           chooser);
 147         g_signal_connect (chooser, "clicked",
 148                           G_CALLBACK (avatar_chooser_clicked_cb),
 149                           chooser);
 150
 151         empathy_avatar_chooser_set (chooser, NULL);
 152 }
 153
 154 static void
 155 avatar_chooser_finalize (GObject *object)
 156 {
 157         EmpathyAvatarChooserPriv *priv;
 158
 159         priv = GET_PRIV (object);
 160
 161         g_free (priv->image_data);
 162
 163         G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
 164 }
 165
 166 static void
 167 avatar_chooser_set_pixbuf (EmpathyAvatarChooser *chooser,
 168                            GdkPixbuf            *pixbuf)
 169 {
 170         EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
 171         GtkWidget                *image;
 172         GdkPixbuf                *pixbuf_view = NULL;
 173         GdkPixbuf                *pixbuf_save = NULL;
 174         GError                   *error = NULL;
 175
 176         g_free (priv->image_data);
 177         priv->image_data = NULL;
 178         priv->image_data_size = 0;
 179
 180         if (pixbuf) {
 181                 pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
 182                 pixbuf_save = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 183
 184                 if (!gdk_pixbuf_save_to_buffer (pixbuf_save,
 185                                                 &priv->image_data,
 186                                                 &priv->image_data_size,
 187                                                 "png",
 188                                                 &error, NULL)) {
 189                         DEBUG ("Failed to save pixbuf: %s",
 190                                 error ? error->message : "No error given");
 191                         g_clear_error (&error);
 192                 }
 193                 image = gtk_image_new_from_pixbuf (pixbuf_view);
 194
 195                 g_object_unref (pixbuf_save);
 196                 g_object_unref (pixbuf_view);
 197         } else {
 198                 image = gtk_image_new_from_icon_name ("stock_person",
 199                                                       GTK_ICON_SIZE_DIALOG);
 200         }
 201
 202         gtk_button_set_image (GTK_BUTTON (chooser), image);
 203         g_signal_emit (chooser, signals[CHANGED], 0);
 204 }
 205
 206 static void
 207 avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
 208                                     const gchar          *filename)
 209 {
 210         GdkPixbuf *pixbuf;
 211         GError    *error = NULL;
 212
 213         if (!(pixbuf = gdk_pixbuf_new_from_file (filename, &error))) {
 214                 DEBUG ("Failed to load pixbuf from file: %s",
 215                         error ? error->message : "No error given");
 216                 g_clear_error (&error);
 217         }
 218
 219         avatar_chooser_set_pixbuf (chooser, pixbuf);
 220         if (pixbuf) {
 221                 g_object_unref (pixbuf);
 222         }
 223 }
 224
 225 static void
 226 avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
 227                                     gchar                *data,
 228                                     gsize                 size)
 229 {
 230         GdkPixbuf *pixbuf;
 231
 232         pixbuf = empathy_pixbuf_from_data (data, size);
 233         avatar_chooser_set_pixbuf (chooser, pixbuf);
 234         if (pixbuf) {
 235                 g_object_unref (pixbuf);
 236         }
 237 }
 238
 239 static gboolean
 240 avatar_chooser_drag_motion_cb (GtkWidget          *widget,
 241                               GdkDragContext     *context,
 242                               gint                x,
 243                               gint                y,
 244                               guint               time,
 245                               EmpathyAvatarChooser *chooser)
 246 {
 247         EmpathyAvatarChooserPriv *priv;
 248         GList                  *p;
 249
 250         priv = GET_PRIV (chooser);
 251
 252         for (p = context->targets; p != NULL; p = p->next) {
 253                 gchar *possible_type;
 254
 255                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 256
 257                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 258                         g_free (possible_type);
 259                         gdk_drag_status (context, GDK_ACTION_COPY, time);
 260
 261                         return TRUE;
 262                 }
 263
 264                 g_free (possible_type);
 265         }
 266
 267         return FALSE;
 268 }
 269
 270 static void
 271 avatar_chooser_drag_leave_cb (GtkWidget          *widget,
 272                              GdkDragContext     *context,
 273                              guint               time,
 274                              EmpathyAvatarChooser *chooser)
 275 {
 276 }
 277
 278 static gboolean
 279 avatar_chooser_drag_drop_cb (GtkWidget          *widget,
 280                             GdkDragContext     *context,
 281                             gint                x,
 282                             gint                y,
 283                             guint               time,
 284                             EmpathyAvatarChooser *chooser)
 285 {
 286         EmpathyAvatarChooserPriv *priv;
 287         GList                  *p;
 288
 289         priv = GET_PRIV (chooser);
 290
 291         if (context->targets == NULL) {
 292                 return FALSE;
 293         }
 294
 295         for (p = context->targets; p != NULL; p = p->next) {
 296                 char *possible_type;
 297
 298                 possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
 299                 if (!strcmp (possible_type, URI_LIST_TYPE)) {
 300                         g_free (possible_type);
 301                         gtk_drag_get_data (widget, context,
 302                                            GDK_POINTER_TO_ATOM (p->data),
 303                                            time);
 304
 305                         return TRUE;
 306                 }
 307
 308                 g_free (possible_type);
 309         }
 310
 311         return FALSE;
 312 }
 313
 314 static void
 315 avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
 316                                      GdkDragContext     *context,
 317                                      gint                x,
 318                                      gint                y,
 319                                      GtkSelectionData   *selection_data,
 320                                      guint               info,
 321                                      guint               time,
 322                                      EmpathyAvatarChooser *chooser)
 323 {
 324         gchar    *target_type;
 325         gboolean  handled = FALSE;
 326
 327         target_type = gdk_atom_name (selection_data->target);
 328         if (!strcmp (target_type, URI_LIST_TYPE)) {
 329                 GFile            *file;
 330                 GFileInputStream *input_stream;
 331                 gchar            *nl;
 332                 gchar            *data = NULL;
 333
 334                 nl = strstr (selection_data->data, "\r\n");
 335                 if (nl) {
 336                         gchar *uri;
 337
 338                         uri = g_strndup (selection_data->data,
 339                                          nl - (gchar*) selection_data->data);
 340
 341                         file = g_file_new_for_uri (uri);
 342                         g_free (uri);
 343                 } else {
 344                         file = g_file_new_for_uri (selection_data->data);
 345                 }
 346
 347                 input_stream = g_file_read (file, NULL, NULL);
 348
 349                 if (input_stream != NULL) {
 350                         GFileInfo *info;
 351
 352                         info = g_file_query_info (file,
 353                                                   G_FILE_ATTRIBUTE_STANDARD_SIZE,
 354                                                   0, NULL, NULL);
 355                         if (info != NULL) {
 356                                 goffset size;
 357                                 gssize bytes_read;
 358
 359                                 size = g_file_info_get_size (info);
 360                                 data = g_malloc (size);
 361
 362                                 bytes_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
 363                                                                   data, size,
 364                                                                   NULL, NULL);
 365                                 if (bytes_read != -1) {
 366                                         avatar_chooser_set_image_from_data (chooser,
 367                                                                             data,
 368                                                                             (gsize) bytes_read);
 369                                         handled = TRUE;
 370                                 }
 371
 372                                 g_free (data);
 373                                 g_object_unref (info);
 374                         }
 375
 376                         g_object_unref (input_stream);
 377                 }
 378
 379                 g_object_unref (file);
 380         }
 381
 382         gtk_drag_finish (context, handled, FALSE, time);
 383 }
 384
 385 static void
 386 avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
 387                                   EmpathyAvatarChooser *chooser)
 388 {
 389         gchar *filename;
 390
 391         filename = gtk_file_chooser_get_preview_filename (file_chooser);
 392
 393         if (filename) {
 394                 GtkWidget *image;
 395                 GdkPixbuf *pixbuf = NULL;
 396                 GdkPixbuf *scaled_pixbuf;
 397
 398                 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
 399
 400                 image = gtk_file_chooser_get_preview_widget (file_chooser);
 401
 402                 if (pixbuf) {
 403                         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_SAVE);
 404                         gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
 405                         g_object_unref (scaled_pixbuf);
 406                         g_object_unref (pixbuf);
 407                 } else {
 408                         gtk_image_set_from_stock (GTK_IMAGE (image),
 409                                                   "gtk-dialog-question",
 410                                                   GTK_ICON_SIZE_DIALOG);
 411                 }
 412         }
 413
 414         gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
 415 }
 416
 417 static void
 418 avatar_chooser_response_cb (GtkWidget            *widget,
 419                             gint                  response,
 420                             EmpathyAvatarChooser *chooser)
 421 {
 422         if (response == GTK_RESPONSE_OK) {
 423                 gchar *filename;
 424                 gchar *path;
 425
 426                 filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
 427                 avatar_chooser_set_image_from_file (chooser, filename);
 428                 g_free (filename);
 429
 430                 path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
 431                 if (path) {
 432                         empathy_conf_set_string (empathy_conf_get (),
 433                                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 434                                                  path);
 435                         g_free (path);
 436                 }
 437         }
 438         else if (response == GTK_RESPONSE_NO) {
 439                 avatar_chooser_set_image_from_data (chooser, NULL, 0);
 440         }
 441
 442         gtk_widget_destroy (widget);
 443 }
 444
 445 static void
 446 avatar_chooser_clicked_cb (GtkWidget            *button,
 447                            EmpathyAvatarChooser *chooser)
 448 {
 449         GtkFileChooser *chooser_dialog;
 450         GtkWidget      *image;
 451         gchar          *saved_dir = NULL;
 452         const gchar    *default_dir = DEFAULT_DIR;
 453         const gchar    *pics_dir;
 454         GtkFileFilter  *filter;
 455
 456         chooser_dialog = GTK_FILE_CHOOSER (
 457                 gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
 458                                              empathy_get_toplevel_window (GTK_WIDGET (chooser)),
 459                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 460                                              _("No Image"),
 461                                              GTK_RESPONSE_NO,
 462                                              GTK_STOCK_CANCEL,
 463                                              GTK_RESPONSE_CANCEL,
 464                                              GTK_STOCK_OPEN,
 465                                              GTK_RESPONSE_OK,
 466                                              NULL));
 467
 468         /* Get special dirs */
 469         empathy_conf_get_string (empathy_conf_get (),
 470                                  EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
 471                                  &saved_dir);
 472         if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
 473                 g_free (saved_dir);
 474                 saved_dir = NULL;
 475         }
 476         if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
 477                 default_dir = NULL;
 478         }
 479         pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
 480         if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
 481                 pics_dir = NULL;
 482         }
 483
 484         /* Set current dir to the last one or to DEFAULT_DIR or to home */
 485         if (saved_dir) {
 486                 gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
 487         }
 488         else if (pics_dir) {
 489                 gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
 490         }
 491         else if (default_dir) {
 492                 gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
 493         } else {
 494                 gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
 495         }
 496
 497         /* Add shortcuts to special dirs */
 498         if (saved_dir) {
 499                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
 500         }
 501         else if (pics_dir) {
 502                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
 503         }
 504         if (default_dir) {
 505                 gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
 506         }
 507
 508         /* Setup preview image */
 509         image = gtk_image_new ();
 510         gtk_file_chooser_set_preview_widget (chooser_dialog, image);
 511         gtk_widget_set_size_request (image, AVATAR_SIZE_SAVE, AVATAR_SIZE_SAVE);
 512         gtk_widget_show (image);
 513         gtk_file_chooser_set_use_preview_label (chooser_dialog, FALSE);
 514         g_signal_connect (chooser_dialog, "update-preview",
 515                           G_CALLBACK (avatar_chooser_update_preview_cb),
 516                           chooser);
 517
 518         /* Setup filers */
 519         filter = gtk_file_filter_new ();
 520         gtk_file_filter_set_name (filter, _("Images"));
 521         gtk_file_filter_add_pixbuf_formats (filter);
 522         gtk_file_chooser_add_filter (chooser_dialog, filter);
 523         filter = gtk_file_filter_new ();
 524         gtk_file_filter_set_name (filter, _("All Files"));
 525         gtk_file_filter_add_pattern(filter, "*");
 526         gtk_file_chooser_add_filter (chooser_dialog, filter);
 527
 528         /* Setup response */
 529         gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
 530         g_signal_connect (chooser_dialog, "response",
 531                           G_CALLBACK (avatar_chooser_response_cb),
 532                           chooser);
 533
 534         gtk_widget_show (GTK_WIDGET (chooser_dialog));
 535         g_free (saved_dir);
 536 }
 537
 538 GtkWidget *
 539 empathy_avatar_chooser_new (void)
 540 {
 541         return g_object_new (EMPATHY_TYPE_AVATAR_CHOOSER, NULL);
 542 }
 543
 544 void
 545 empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
 546                             EmpathyAvatar        *avatar)
 547 {
 548         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 549
 550         avatar_chooser_set_image_from_data (chooser,
 551                                             avatar ? avatar->data : NULL,
 552                                             avatar ? avatar->len : 0);
 553 }
 554
 555 void
 556 empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
 557                                        const gchar          **data,
 558                                        gsize                 *data_size,
 559                                        const gchar          **mime_type)
 560 {
 561         EmpathyAvatarChooserPriv *priv;
 562
 563         g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
 564
 565         priv = GET_PRIV (chooser);
 566
 567         if (data) {
 568                 *data = priv->image_data;
 569         }
 570         if (data_size) {
 571                 *data_size = priv->image_data_size;
 572         }
 573         if (mime_type) {
 574                 *mime_type = "png";
 575         }
 576 }
 577