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