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 *
get_model(void)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
visible_func(GtkTreeModel * model,GtkTreeIter * iter,gpointer data)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 *
get_filter_model(gboolean first)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 *
get_view(gboolean first)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
keynav_failed(GtkWidget * view,GtkDirectionType direction,Views * views)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
focus_out(GtkWidget * view,GdkEventFocus * event,gpointer data)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
focus_in(GtkWidget * view,GdkEventFocus * event,gpointer data)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
header_style_set(GtkWidget * widget,GtkStyle * old_style)213 header_style_set (GtkWidget *widget,
214 GtkStyle *old_style)
215 {
216 g_signal_handlers_block_by_func (widget, header_style_set, NULL);
217 gtk_widget_modify_bg (widget, GTK_STATE_NORMAL,
218 &widget->style->base[GTK_STATE_NORMAL]);
219 gtk_widget_modify_fg (widget, GTK_STATE_NORMAL,
220 &widget->style->text[GTK_STATE_NORMAL]);
221 g_signal_handlers_unblock_by_func (widget, header_style_set, NULL);
222 }
223
224 int
main(int argc,char * argv[])225 main (int argc, char *argv[])
226 {
227 GtkWidget *window;
228 GtkWidget *vbox;
229 Views views;
230
231 gtk_init (&argc, &argv);
232
233 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
234 vbox = gtk_vbox_new (FALSE, 0);
235 gtk_container_add (GTK_CONTAINER (window), vbox);
236
237 views.header1 = g_object_new (GTK_TYPE_LABEL,
238 "label", "<b>Group 1</b>",
239 "use-markup", TRUE,
240 "xalign", 0.0,
241 NULL);
242 views.view1 = get_view (TRUE);
243 views.header2 = g_object_new (GTK_TYPE_LABEL,
244 "label", "<b>Group 2</b>",
245 "use-markup", TRUE,
246 "xalign", 0.0,
247 NULL);
248 views.view2 = get_view (FALSE);
249
250 g_signal_connect (views.view1, "keynav-failed",
251 G_CALLBACK (keynav_failed), &views);
252 g_signal_connect (views.view2, "keynav-failed",
253 G_CALLBACK (keynav_failed), &views);
254 g_signal_connect (views.view1, "focus-in-event",
255 G_CALLBACK (focus_in), NULL);
256 g_signal_connect (views.view1, "focus-out-event",
257 G_CALLBACK (focus_out), NULL);
258 g_signal_connect (views.view2, "focus-in-event",
259 G_CALLBACK (focus_in), NULL);
260 g_signal_connect (views.view2, "focus-out-event",
261 G_CALLBACK (focus_out), NULL);
262 g_signal_connect (views.header1, "style-set",
263 G_CALLBACK (header_style_set), NULL);
264 g_signal_connect (views.header2, "style-set",
265 G_CALLBACK (header_style_set), NULL);
266 g_signal_connect (window, "style-set",
267 G_CALLBACK (header_style_set), NULL);
268
269 gtk_container_add (GTK_CONTAINER (vbox), views.header1);
270 gtk_container_add (GTK_CONTAINER (vbox), views.view1);
271 gtk_container_add (GTK_CONTAINER (vbox), views.header2);
272 gtk_container_add (GTK_CONTAINER (vbox), views.view2);
273
274 gtk_widget_show_all (window);
275
276 gtk_main ();
277
278 return 0;
279 }
280
281