Pileus Git - ~andy/gtk/blob - tests/testiconview-keynav.c

   1 /* testiconview-keynav.c
   2  * Copyright (C) 2010  Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  *
  19  * Author: Matthias Clasen
  20  */
  21
  22 /*
  23  * This example demonstrates how to use the keynav-failed signal to
  24  * extend arrow keynav over adjacent icon views. This can be used when
  25  * grouping items.
  26  */
  27
  28 #include <gtk/gtk.h>
  29
  30 static GtkTreeModel *
  31 get_model (void)
  32 {
  33   static GtkListStore *store;
  34   GtkTreeIter iter;
  35
  36   if (store)
  37     return (GtkTreeModel *) g_object_ref (store);
  38
  39   store = gtk_list_store_new (1, G_TYPE_STRING);
  40
  41   gtk_list_store_append (store, &iter);
  42   gtk_list_store_set (store, &iter, 0, "One", -1);
  43   gtk_list_store_append (store, &iter);
  44   gtk_list_store_set (store, &iter, 0, "Two", -1);
  45   gtk_list_store_append (store, &iter);
  46   gtk_list_store_set (store, &iter, 0, "Three", -1);
  47   gtk_list_store_append (store, &iter);
  48   gtk_list_store_set (store, &iter, 0, "Four", -1);
  49   gtk_list_store_append (store, &iter);
  50   gtk_list_store_set (store, &iter, 0, "Five", -1);
  51   gtk_list_store_append (store, &iter);
  52   gtk_list_store_set (store, &iter, 0, "Six", -1);
  53   gtk_list_store_append (store, &iter);
  54   gtk_list_store_set (store, &iter, 0, "Seven", -1);
  55   gtk_list_store_append (store, &iter);
  56   gtk_list_store_set (store, &iter, 0, "Eight", -1);
  57
  58   return (GtkTreeModel *) store;
  59 }
  60
  61 static gboolean
  62 visible_func (GtkTreeModel *model,
  63               GtkTreeIter  *iter,
  64               gpointer      data)
  65 {
  66   gboolean first = GPOINTER_TO_INT (data);
  67   gboolean visible;
  68   GtkTreePath *path;
  69
  70   path = gtk_tree_model_get_path (model, iter);
  71
  72   if (gtk_tree_path_get_indices (path)[0] < 4)
  73     visible = first;
  74   else
  75     visible = !first;
  76
  77   gtk_tree_path_free (path);
  78
  79   return visible;
  80 }
  81
  82 GtkTreeModel *
  83 get_filter_model (gboolean first)
  84 {
  85   GtkTreeModelFilter *model;
  86
  87   model = (GtkTreeModelFilter *)gtk_tree_model_filter_new (get_model (), NULL);
  88
  89   gtk_tree_model_filter_set_visible_func (model, visible_func, GINT_TO_POINTER (first), NULL);
  90
  91   return (GtkTreeModel *) model;
  92 }
  93
  94 static GtkWidget *
  95 get_view (gboolean first)
  96 {
  97   GtkWidget *view;
  98
  99   view = gtk_icon_view_new_with_model (get_filter_model (first));
 100   gtk_icon_view_set_text_column (GTK_ICON_VIEW (view), 0);
 101   gtk_widget_set_size_request (view, 0, -1);
 102
 103   return view;
 104 }
 105
 106 typedef struct
 107 {
 108   GtkWidget *header1;
 109   GtkWidget *view1;
 110   GtkWidget *header2;
 111   GtkWidget *view2;
 112 } Views;
 113
 114 static gboolean
 115 keynav_failed (GtkWidget        *view,
 116                GtkDirectionType  direction,
 117                Views            *views)
 118 {
 119   GtkTreePath *path;
 120   GtkTreeModel *model;
 121   GtkTreeIter iter;
 122   gint col;
 123   GtkTreePath *sel;
 124
 125   if (view == views->view1 && direction == GTK_DIR_DOWN)
 126     {
 127       if (gtk_icon_view_get_cursor (GTK_ICON_VIEW (views->view1), &path, NULL))
 128         {
 129           col = gtk_icon_view_get_item_column (GTK_ICON_VIEW (views->view1), path);
 130           gtk_tree_path_free (path);
 131
 132           sel = NULL;
 133           model = gtk_icon_view_get_model (GTK_ICON_VIEW (views->view2));
 134           gtk_tree_model_get_iter_first (model, &iter);
 135           do {
 136             path = gtk_tree_model_get_path (model, &iter);
 137             if (gtk_icon_view_get_item_column (GTK_ICON_VIEW (views->view2), path) == col)
 138               {
 139                 sel = path;
 140                 break;
 141               }
 142           } while (gtk_tree_model_iter_next (model, &iter));
 143
 144           gtk_icon_view_set_cursor (GTK_ICON_VIEW (views->view2), sel, NULL, FALSE);
 145           gtk_tree_path_free (sel);
 146         }
 147       gtk_widget_grab_focus (views->view2);
 148       return TRUE;
 149     }
 150
 151   if (view == views->view2 && direction == GTK_DIR_UP)
 152     {
 153       if (gtk_icon_view_get_cursor (GTK_ICON_VIEW (views->view2), &path, NULL))
 154         {
 155           col = gtk_icon_view_get_item_column (GTK_ICON_VIEW (views->view2), path);
 156           gtk_tree_path_free (path);
 157
 158           sel = NULL;
 159           model = gtk_icon_view_get_model (GTK_ICON_VIEW (views->view1));
 160           gtk_tree_model_get_iter_first (model, &iter);
 161           do {
 162             path = gtk_tree_model_get_path (model, &iter);
 163             if (gtk_icon_view_get_item_column (GTK_ICON_VIEW (views->view1), path) == col)
 164               {
 165                 if (sel)
 166                   gtk_tree_path_free (sel);
 167                 sel = path;
 168               }
 169             else
 170               gtk_tree_path_free (path);
 171           } while (gtk_tree_model_iter_next (model, &iter));
 172
 173           gtk_icon_view_set_cursor (GTK_ICON_VIEW (views->view1), sel, NULL, FALSE);
 174           gtk_tree_path_free (sel);
 175         }
 176       gtk_widget_grab_focus (views->view1);
 177       return TRUE;
 178     }
 179
 180   return FALSE;
 181 }
 182
 183 static gboolean
 184 focus_out (GtkWidget     *view,
 185            GdkEventFocus *event,
 186            gpointer       data)
 187 {
 188   gtk_icon_view_unselect_all (GTK_ICON_VIEW (view));
 189
 190   return FALSE;
 191 }
 192
 193 static gboolean
 194 focus_in (GtkWidget     *view,
 195           GdkEventFocus *event,
 196           gpointer       data)
 197 {
 198   GtkTreePath *path;
 199
 200   if (!gtk_icon_view_get_cursor (GTK_ICON_VIEW (view), &path, NULL))
 201     {
 202       path = gtk_tree_path_new_from_indices (0, -1);
 203       gtk_icon_view_set_cursor (GTK_ICON_VIEW (view), path, NULL, FALSE);
 204     }
 205
 206   gtk_icon_view_select_path (GTK_ICON_VIEW (view), path);
 207   gtk_tree_path_free (path);
 208
 209   return FALSE;
 210 }
 211
 212 static void
 213 header_style_set (GtkWidget *widget,
 214                   GtkStyle  *old_style)
 215 {
 216   GtkStyle *style;
 217
 218   style = gtk_widget_get_style (widget);
 219
 220   g_signal_handlers_block_by_func (widget, header_style_set, NULL);
 221   gtk_widget_modify_bg (widget, GTK_STATE_NORMAL,
 222                         &style->base[GTK_STATE_NORMAL]);
 223   gtk_widget_modify_fg (widget, GTK_STATE_NORMAL,
 224                         &style->text[GTK_STATE_NORMAL]);
 225   g_signal_handlers_unblock_by_func (widget, header_style_set, NULL);
 226 }
 227
 228 int
 229 main (int argc, char *argv[])
 230 {
 231   GtkWidget *window;
 232   GtkWidget *vbox;
 233   Views views;
 234
 235   gtk_init (&argc, &argv);
 236
 237   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 238   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, FALSE, 0);
 239   gtk_container_add (GTK_CONTAINER (window), vbox);
 240
 241   views.header1 = g_object_new (GTK_TYPE_LABEL,
 242                                 "label", "<b>Group 1</b>",
 243                                 "use-markup", TRUE,
 244                                 "xalign", 0.0,
 245                                 NULL);
 246   views.view1 = get_view (TRUE);
 247   views.header2 = g_object_new (GTK_TYPE_LABEL,
 248                                 "label", "<b>Group 2</b>",
 249                                 "use-markup", TRUE,
 250                                 "xalign", 0.0,
 251                                 NULL);
 252   views.view2 = get_view (FALSE);
 253
 254   g_signal_connect (views.view1, "keynav-failed",
 255                     G_CALLBACK (keynav_failed), &views);
 256   g_signal_connect (views.view2, "keynav-failed",
 257                     G_CALLBACK (keynav_failed), &views);
 258   g_signal_connect (views.view1, "focus-in-event",
 259                     G_CALLBACK (focus_in), NULL);
 260   g_signal_connect (views.view1, "focus-out-event",
 261                     G_CALLBACK (focus_out), NULL);
 262   g_signal_connect (views.view2, "focus-in-event",
 263                     G_CALLBACK (focus_in), NULL);
 264   g_signal_connect (views.view2, "focus-out-event",
 265                     G_CALLBACK (focus_out), NULL);
 266   g_signal_connect (views.header1, "style-set",
 267                     G_CALLBACK (header_style_set), NULL);
 268   g_signal_connect (views.header2, "style-set",
 269                     G_CALLBACK (header_style_set), NULL);
 270   g_signal_connect (window, "style-set",
 271                     G_CALLBACK (header_style_set), NULL);
 272
 273   gtk_container_add (GTK_CONTAINER (vbox), views.header1);
 274   gtk_container_add (GTK_CONTAINER (vbox), views.view1);
 275   gtk_container_add (GTK_CONTAINER (vbox), views.header2);
 276   gtk_container_add (GTK_CONTAINER (vbox), views.view2);
 277
 278   gtk_widget_show_all (window);
 279
 280   gtk_main ();
 281
 282   return 0;
 283 }
 284