Pileus Git - ~andy/gtk/blob - demos/gtk-demo/search_entry.c

   1 /* Entry/Search Entry
   2  *
   3  * GtkEntry allows to display icons and progress information.
   4  * This demo shows how to use these features in a search entry.
   5  */
   6
   7 #include <gtk/gtk.h>
   8
   9 static GtkWidget *window = NULL;
  10 static GtkWidget *menu = NULL;
  11 static GtkWidget *notebook = NULL;
  12
  13 static guint search_progress_id = 0;
  14 static guint finish_search_id = 0;
  15
  16 static void
  17 show_find_button (void)
  18 {
  19   gtk_notebook_set_current_page (GTK_NOTEBOOK (notebook), 0);
  20 }
  21
  22 static void
  23 show_cancel_button (void)
  24 {
  25   gtk_notebook_set_current_page (GTK_NOTEBOOK (notebook), 1);
  26 }
  27
  28 static gboolean
  29 search_progress (gpointer data)
  30 {
  31   gtk_entry_progress_pulse (GTK_ENTRY (data));
  32
  33   return TRUE;
  34 }
  35
  36 static void
  37 search_progress_done (GtkEntry *entry)
  38 {
  39   gtk_entry_set_progress_fraction (entry, 0.0);
  40 }
  41
  42 static gboolean
  43 finish_search (GtkButton *button)
  44 {
  45   show_find_button ();
  46   g_source_remove (search_progress_id);
  47   search_progress_id = 0;
  48
  49   return FALSE;
  50 }
  51
  52 static gboolean
  53 start_search_feedback (gpointer data)
  54 {
  55   search_progress_id = g_timeout_add_full (G_PRIORITY_DEFAULT, 100,
  56                                            (GSourceFunc)search_progress, data,
  57                                            (GDestroyNotify)search_progress_done);
  58   return FALSE;
  59 }
  60
  61 static void
  62 start_search (GtkButton *button,
  63               GtkEntry  *entry)
  64 {
  65   show_cancel_button ();
  66   search_progress_id = g_timeout_add_seconds (1, (GSourceFunc)start_search_feedback, entry);
  67   finish_search_id = g_timeout_add_seconds (15, (GSourceFunc)finish_search, button);
  68 }
  69
  70
  71 static void
  72 stop_search (GtkButton *button,
  73              gpointer   data)
  74 {
  75   g_source_remove (finish_search_id);
  76   finish_search (button);
  77 }
  78
  79 static void
  80 clear_entry (GtkEntry *entry)
  81 {
  82   gtk_entry_set_text (entry, "");
  83 }
  84
  85 static void
  86 search_by_name (GtkWidget *item,
  87                 GtkEntry  *entry)
  88 {
  89   gtk_entry_set_icon_from_stock (entry,
  90                                  GTK_ENTRY_ICON_PRIMARY,
  91                                  GTK_STOCK_FIND);
  92   gtk_entry_set_icon_tooltip_text (entry,
  93                                    GTK_ENTRY_ICON_PRIMARY,
  94                                    "Search by name\n"
  95                                    "Click here to change the search type");
  96 }
  97
  98 static void
  99 search_by_description (GtkWidget *item,
 100                        GtkEntry  *entry)
 101 {
 102   gtk_entry_set_icon_from_stock (entry,
 103                                  GTK_ENTRY_ICON_PRIMARY,
 104                                  GTK_STOCK_EDIT);
 105   gtk_entry_set_icon_tooltip_text (entry,
 106                                    GTK_ENTRY_ICON_PRIMARY,
 107                                    "Search by description\n"
 108                                    "Click here to change the search type");
 109 }
 110
 111 static void
 112 search_by_file (GtkWidget *item,
 113                 GtkEntry  *entry)
 114 {
 115   gtk_entry_set_icon_from_stock (entry,
 116                                  GTK_ENTRY_ICON_PRIMARY,
 117                                  GTK_STOCK_OPEN);
 118   gtk_entry_set_icon_tooltip_text (entry,
 119                                    GTK_ENTRY_ICON_PRIMARY,
 120                                    "Search by file name\n"
 121                                    "Click here to change the search type");
 122 }
 123
 124 GtkWidget *
 125 create_search_menu (GtkWidget *entry)
 126 {
 127   GtkWidget *menu;
 128   GtkWidget *item;
 129   GtkWidget *image;
 130
 131   menu = gtk_menu_new ();
 132
 133   item = gtk_image_menu_item_new_with_mnemonic ("Search by _name");
 134   image = gtk_image_new_from_stock (GTK_STOCK_FIND, GTK_ICON_SIZE_MENU);
 135   gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
 136   gtk_image_menu_item_set_always_show_image (GTK_IMAGE_MENU_ITEM (item), TRUE);
 137   g_signal_connect (item, "activate",
 138                     G_CALLBACK (search_by_name), entry);
 139   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 140
 141   item = gtk_image_menu_item_new_with_mnemonic ("Search by _description");
 142   image = gtk_image_new_from_stock (GTK_STOCK_EDIT, GTK_ICON_SIZE_MENU);
 143   gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
 144   gtk_image_menu_item_set_always_show_image (GTK_IMAGE_MENU_ITEM (item), TRUE);
 145   g_signal_connect (item, "activate",
 146                     G_CALLBACK (search_by_description), entry);
 147   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 148
 149   item = gtk_image_menu_item_new_with_mnemonic ("Search by _file name");
 150   image = gtk_image_new_from_stock (GTK_STOCK_OPEN, GTK_ICON_SIZE_MENU);
 151   gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
 152   gtk_image_menu_item_set_always_show_image (GTK_IMAGE_MENU_ITEM (item), TRUE);
 153   g_signal_connect (item, "activate",
 154                     G_CALLBACK (search_by_file), entry);
 155   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 156
 157   gtk_widget_show_all (menu);
 158
 159   return menu;
 160 }
 161
 162 static void
 163 icon_press_cb (GtkEntry       *entry,
 164                gint            position,
 165                GdkEventButton *event,
 166                gpointer        data)
 167 {
 168   if (position == GTK_ENTRY_ICON_PRIMARY)
 169     gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL,
 170                     event->button, event->time);
 171   else
 172     clear_entry (entry);
 173 }
 174
 175 static void
 176 text_changed_cb (GtkEntry   *entry,
 177                  GParamSpec *pspec,
 178                  GtkWidget  *button)
 179 {
 180   gboolean has_text;
 181
 182   has_text = gtk_entry_get_text_length (entry) > 0;
 183   gtk_entry_set_icon_sensitive (entry,
 184                                 GTK_ENTRY_ICON_SECONDARY,
 185                                 has_text);
 186   gtk_widget_set_sensitive (button, has_text);
 187 }
 188
 189 static void
 190 activate_cb (GtkEntry  *entry,
 191              GtkButton *button)
 192 {
 193   if (search_progress_id != 0)
 194     return;
 195
 196   start_search (button, entry);
 197
 198 }
 199
 200 static void
 201 search_entry_destroyed (GtkWidget  *widget)
 202 {
 203   if (finish_search_id != 0)
 204     g_source_remove (finish_search_id);
 205
 206   if (search_progress_id != 0)
 207     g_source_remove (search_progress_id);
 208
 209   window = NULL;
 210 }
 211
 212 static void
 213 entry_populate_popup (GtkEntry *entry,
 214                       GtkMenu  *menu,
 215                       gpointer user_data)
 216 {
 217   GtkWidget *item;
 218   GtkWidget *search_menu;
 219   gboolean has_text;
 220
 221   has_text = gtk_entry_get_text_length (entry) > 0;
 222
 223   item = gtk_separator_menu_item_new ();
 224   gtk_widget_show (item);
 225   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 226
 227   item = gtk_menu_item_new_with_mnemonic ("C_lear");
 228   gtk_widget_show (item);
 229   g_signal_connect_swapped (item, "activate",
 230                             G_CALLBACK (clear_entry), entry);
 231   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 232   gtk_widget_set_sensitive (item, has_text);
 233
 234   search_menu = create_search_menu (GTK_WIDGET (entry));
 235   item = gtk_menu_item_new_with_label ("Search by");
 236   gtk_widget_show (item);
 237   gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), search_menu);
 238   gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
 239 }
 240
 241 GtkWidget *
 242 do_search_entry (GtkWidget *do_widget)
 243 {
 244   GtkWidget *content_area;
 245   GtkWidget *vbox;
 246   GtkWidget *hbox;
 247   GtkWidget *label;
 248   GtkWidget *entry;
 249   GtkWidget *find_button;
 250   GtkWidget *cancel_button;
 251
 252   if (!window)
 253     {
 254       window = gtk_dialog_new_with_buttons ("Search Entry",
 255                                             GTK_WINDOW (do_widget),
 256                                             0,
 257                                             GTK_STOCK_CLOSE,
 258                                             GTK_RESPONSE_NONE,
 259                                             NULL);
 260       gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
 261
 262       g_signal_connect (window, "response",
 263                         G_CALLBACK (gtk_widget_destroy), NULL);
 264       g_signal_connect (window, "destroy",
 265                         G_CALLBACK (search_entry_destroyed), &window);
 266
 267       content_area = gtk_dialog_get_content_area (GTK_DIALOG (window));
 268
 269       vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, FALSE, 5);
 270       gtk_box_pack_start (GTK_BOX (content_area), vbox, TRUE, TRUE, 0);
 271       gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
 272
 273       label = gtk_label_new (NULL);
 274       gtk_label_set_markup (GTK_LABEL (label), "Search entry demo");
 275       gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
 276
 277       hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, FALSE, 10);
 278       gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
 279       gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
 280
 281       /* Create our entry */
 282       entry = gtk_entry_new ();
 283       gtk_box_pack_start (GTK_BOX (hbox), entry, FALSE, FALSE, 0);
 284
 285       /* Create the find and cancel buttons */
 286       notebook = gtk_notebook_new ();
 287       gtk_notebook_set_show_tabs (GTK_NOTEBOOK (notebook), FALSE);
 288       gtk_notebook_set_show_border (GTK_NOTEBOOK (notebook), FALSE);
 289       gtk_box_pack_start (GTK_BOX (hbox), notebook, FALSE, FALSE, 0);
 290
 291       find_button = gtk_button_new_with_label ("Find");
 292       g_signal_connect (find_button, "clicked",
 293                         G_CALLBACK (start_search), entry);
 294       gtk_notebook_append_page (GTK_NOTEBOOK (notebook), find_button, NULL);
 295       gtk_widget_show (find_button);
 296
 297       cancel_button = gtk_button_new_with_label ("Cancel");
 298       g_signal_connect (cancel_button, "clicked",
 299                         G_CALLBACK (stop_search), NULL);
 300       gtk_notebook_append_page (GTK_NOTEBOOK (notebook), cancel_button, NULL);
 301       gtk_widget_show (cancel_button);
 302
 303       /* Set up the search icon */
 304       search_by_name (NULL, GTK_ENTRY (entry));
 305
 306       /* Set up the clear icon */
 307       gtk_entry_set_icon_from_stock (GTK_ENTRY (entry),
 308                                      GTK_ENTRY_ICON_SECONDARY,
 309                                      GTK_STOCK_CLEAR);
 310       text_changed_cb (GTK_ENTRY (entry), NULL, find_button);
 311
 312       g_signal_connect (entry, "icon-press",
 313                         G_CALLBACK (icon_press_cb), NULL);
 314       g_signal_connect (entry, "notify::text",
 315                         G_CALLBACK (text_changed_cb), find_button);
 316       g_signal_connect (entry, "activate",
 317                         G_CALLBACK (activate_cb), NULL);
 318
 319       /* Create the menu */
 320       menu = create_search_menu (entry);
 321       gtk_menu_attach_to_widget (GTK_MENU (menu), entry, NULL);
 322
 323       /* add accessible alternatives for icon functionality */
 324       g_signal_connect (entry, "populate-popup",
 325                         G_CALLBACK (entry_populate_popup), NULL);
 326     }
 327
 328   if (!gtk_widget_get_visible (window))
 329     gtk_widget_show_all (window);
 330   else
 331     {
 332       gtk_widget_destroy (menu);
 333       gtk_widget_destroy (window);
 334       window = NULL;
 335     }
 336
 337   return window;
 338 }