/src/wrappers/gtk/examples/gtk-demo/iconview.e

  1indexing
  2	description: "."
  3	copyright: "[
  4					Copyright (C) 2006 Paolo Redaelli, GTK+ team
  5					
  6					This library is free software; you can redistribute it and/or
  7					modify it under the terms of the GNU Lesser General Public License
  8					as published by the Free Software Foundation; either version 2.1 of
  9					the License, or (at your option) any later version.
 10					
 11					This library is distributed in the hope that it will be useful, but
 12					WITHOUT ANY WARRANTY; without even the implied warranty of
 13					MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 14					Lesser General Public License for more details.
 15
 16					You should have received a copy of the GNU Lesser General Public
 17					License along with this library; if not, write to the Free Software
 18					Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 19					02110-1301 USA
 20			]"
 21
 22class ICONVIEW
 23
 24creation make
 25	
 26feature
 27-- /* Icon View/Icon View Basics
 28--  *
 29--  * The GtkIconView widget is used to display and manipulate icons.  
 30--  * It uses a GtkTreeModel for data storage, so the list store 
 31--  * example might be helpful.
 32--  */
 33
 34-- #include <gtk/gtk.h>
 35-- #include <string.h>
 36-- #include "demo-common.h"
 37
 38-- static GtkWidget *window = NULL;
 39
 40-- #define FOLDER_NAME "gnome-fs-directory.png"
 41-- #define FILE_NAME "gnome-fs-regular.png"
 42
 43-- enum
 44-- {
 45--   COL_PATH,
 46--   COL_DISPLAY_NAME,
 47--   COL_PIXBUF,
 48--   COL_IS_DIRECTORY,
 49--   NUM_COLS
 50-- };
 51
 52
 53-- static GdkPixbuf *file_pixbuf, *folder_pixbuf;
 54-- gchar *parent;
 55-- GtkToolItem *up_button;
 56
 57-- /* Loads the images for the demo and returns whether the operation succeeded */
 58-- static gboolean
 59-- load_pixbufs (GError **error)
 60-- {
 61--   char *filename;
 62
 63--   if (file_pixbuf)
 64--     return TRUE; /* already loaded earlier */
 65
 66--   /* demo_find_file() looks in the the current directory first,
 67--    * so you can run gtk-demo without installing GTK, then looks
 68--    * in the location where the file is installed.
 69--    */
 70--   filename = demo_find_file (FILE_NAME, error);
 71--   if (!filename)
 72--     return FALSE; /* note that "error" was filled in and returned */
 73
 74--   file_pixbuf = gdk_pixbuf_new_from_file (filename, error);
 75--   g_free (filename);
 76  
 77--   if (!file_pixbuf)
 78--     return FALSE; /* Note that "error" was filled with a GError */
 79  
 80--   filename = demo_find_file (FOLDER_NAME, error);
 81--   if (!filename)
 82--     return FALSE; /* note that "error" was filled in and returned */
 83
 84--   folder_pixbuf = gdk_pixbuf_new_from_file (filename, error);
 85--   g_free (filename);
 86
 87--   return TRUE;
 88-- }
 89
 90-- static void
 91-- fill_store (GtkListStore *store)
 92-- {
 93--   GDir *dir;
 94--   const gchar *name;
 95--   GtkTreeIter iter;
 96  
 97--   /* First clear the store */
 98--   gtk_list_store_clear (store);
 99
100--   /* Now go through the directory and extract all the file
101--    * information */
102--   dir = g_dir_open (parent, 0, NULL);
103--   if (!dir)
104--     return;
105
106--   name = g_dir_read_name (dir);
107--   while (name != NULL)
108--     {
109--       gchar *path, *display_name;
110--       gboolean is_dir;
111		
112--       /* We ignore hidden files that start with a '.' */
113--       if (name[0] != '.')
114-- 	{
115-- 	  path = g_build_filename (parent, name, NULL);
116
117-- 	  is_dir = g_file_test (path, G_FILE_TEST_IS_DIR);
118	
119-- 	  display_name = g_filename_to_utf8 (name, -1, NULL, NULL, NULL);
120
121-- 	  gtk_list_store_append (store, &iter);
122-- 	  gtk_list_store_set (store, &iter,
123-- 			      COL_PATH, path,
124-- 			      COL_DISPLAY_NAME, display_name,
125-- 			      COL_IS_DIRECTORY, is_dir,
126-- 			      COL_PIXBUF, is_dir ? folder_pixbuf : file_pixbuf,
127-- 			      -1);
128-- 	  g_free (path);
129-- 	  g_free (display_name);
130-- 	}
131
132--       name = g_dir_read_name (dir);      
133--     }
134-- }
135
136-- static gint
137-- sort_func (GtkTreeModel *model,
138-- 	   GtkTreeIter  *a,
139-- 	   GtkTreeIter  *b,
140-- 	   gpointer      user_data)
141-- {
142--   gboolean is_dir_a, is_dir_b;
143--   gchar *name_a, *name_b;
144--   int ret;
145
146--   /* We need this function because we want to sort
147--    * folders before files.
148--    */
149
150  
151--   gtk_tree_model_get (model, a,
152-- 		      COL_IS_DIRECTORY, &is_dir_a,
153-- 		      COL_DISPLAY_NAME, &name_a,
154-- 		      -1);
155
156--   gtk_tree_model_get (model, b,
157-- 		      COL_IS_DIRECTORY, &is_dir_b,
158-- 		      COL_DISPLAY_NAME, &name_b,
159-- 		      -1);
160
161--   if (!is_dir_a && is_dir_b)
162--     ret = 1;
163--   else if (is_dir_a && !is_dir_b)
164--     ret = -1;
165--   else
166--     {
167--       ret = g_utf8_collate (name_a, name_b);
168--     }
169
170--   g_free (name_a);
171--   g_free (name_b);
172
173--   return ret;
174-- }
175
176-- static GtkListStore *
177-- create_store (void)
178-- {
179--   GtkListStore *store;
180
181--   store = gtk_list_store_new (NUM_COLS,
182-- 			      G_TYPE_STRING, 
183-- 			      G_TYPE_STRING, 
184-- 			      GDK_TYPE_PIXBUF,
185-- 			      G_TYPE_BOOLEAN);
186
187--   /* Set sort column and function */ 
188--   gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (store),
189-- 					   sort_func,
190-- 					   NULL, NULL);
191--   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store),
192-- 					GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
193-- 					GTK_SORT_ASCENDING);
194
195--   return store;
196-- }
197
198-- static void
199-- item_activated (GtkIconView *icon_view,
200-- 		GtkTreePath *tree_path,
201-- 		gpointer     user_data)
202-- {
203--   GtkListStore *store;
204--   gchar *path;
205--   GtkTreeIter iter;
206--   gboolean is_dir;
207  
208--   store = GTK_LIST_STORE (user_data);
209
210--   gtk_tree_model_get_iter (GTK_TREE_MODEL (store),
211-- 			   &iter, tree_path);
212--   gtk_tree_model_get (GTK_TREE_MODEL (store), &iter,
213-- 		      COL_PATH, &path,
214-- 		      COL_IS_DIRECTORY, &is_dir,
215-- 		      -1);
216
217--   if (!is_dir)
218--     {
219--       g_free (path);
220--       return;
221--     }
222  
223--   /* Replace parent with path and re-fill the model*/
224--   g_free (parent);
225--   parent = path;
226
227--   fill_store (store);
228
229--   /* Sensitize the up button */
230--   gtk_widget_set_sensitive (GTK_WIDGET (up_button), TRUE);
231-- }
232
233-- static void
234-- up_clicked (GtkToolItem *item,
235-- 	    gpointer     user_data)
236-- {
237--   GtkListStore *store;
238--   gchar *dir_name;
239
240--   store = GTK_LIST_STORE (user_data);
241
242--   dir_name = g_path_get_dirname (parent);
243--   g_free (parent);
244  
245--   parent = dir_name;
246
247--   fill_store (store);
248
249--   /* Maybe de-sensitize the up button */
250--   gtk_widget_set_sensitive (GTK_WIDGET (up_button),
251-- 			    strcmp (parent, "/") != 0);
252-- }
253
254-- static void
255-- home_clicked (GtkToolItem *item,
256-- 	      gpointer     user_data)
257-- {
258--   GtkListStore *store;
259
260--   store = GTK_LIST_STORE (user_data);
261
262--   g_free (parent);
263--   parent = g_strdup (g_get_home_dir ());
264
265--   fill_store (store);
266
267--   /* Sensitize the up button */
268--   gtk_widget_set_sensitive (GTK_WIDGET (up_button),
269-- 			    TRUE);
270-- }
271
272-- GtkWidget *
273-- do_iconview (GtkWidget *do_widget)
274-- {
275--   if (!window)
276--     {
277--       GError *error;
278				
279--       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
280--       gtk_window_set_default_size (GTK_WINDOW (window), 650, 400);
281		
282--       gtk_window_set_screen (GTK_WINDOW (window),
283-- 			     gtk_widget_get_screen (do_widget));
284--       gtk_window_set_title (GTK_WINDOW (window), "GtkIconView demo");
285
286--       g_signal_connect (window, "destroy",
287-- 			G_CALLBACK (gtk_widget_destroyed), &window);
288
289--       error = NULL;
290--       if (!load_pixbufs (&error))
291-- 	{
292-- 	  GtkWidget *dialog;
293
294-- 	  dialog = gtk_message_dialog_new (GTK_WINDOW (window),
295-- 					   GTK_DIALOG_DESTROY_WITH_PARENT,
296-- 					   GTK_MESSAGE_ERROR,
297-- 					   GTK_BUTTONS_CLOSE,
298-- 					   "Failed to load an image: %s",
299-- 					   error->message);
300
301-- 	  g_error_free (error);
302
303-- 	  g_signal_connect (dialog, "response",
304-- 			    G_CALLBACK (gtk_widget_destroy), NULL);
305
306-- 	  gtk_widget_show (dialog);
307-- 	}
308--       else
309-- 	{
310-- 	  GtkWidget *sw;
311-- 	  GtkWidget *icon_view;
312-- 	  GtkListStore *store;
313-- 	  GtkWidget *vbox;
314-- 	  GtkWidget *tool_bar;
315-- 	  GtkToolItem *home_button;
316	
317-- 	  vbox = gtk_vbox_new (FALSE, 0);
318-- 	  gtk_container_add (GTK_CONTAINER (window), vbox);
319
320-- 	  tool_bar = gtk_toolbar_new ();
321-- 	  gtk_box_pack_start (GTK_BOX (vbox), tool_bar, FALSE, FALSE, 0);
322	
323-- 	  up_button = gtk_tool_button_new_from_stock (GTK_STOCK_GO_UP);
324-- 	  gtk_tool_item_set_is_important (up_button, TRUE);
325-- 	  gtk_widget_set_sensitive (GTK_WIDGET (up_button), FALSE);
326-- 	  gtk_toolbar_insert (GTK_TOOLBAR (tool_bar), up_button, -1);
327
328-- 	  home_button = gtk_tool_button_new_from_stock (GTK_STOCK_HOME);
329-- 	  gtk_tool_item_set_is_important (home_button, TRUE);
330-- 	  gtk_toolbar_insert (GTK_TOOLBAR (tool_bar), home_button, -1);
331	
332	
333-- 	  sw = gtk_scrolled_window_new (NULL, NULL);
334-- 	  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw),
335-- 					       GTK_SHADOW_ETCHED_IN);
336-- 	  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
337-- 					  GTK_POLICY_AUTOMATIC,
338-- 					  GTK_POLICY_AUTOMATIC);
339	
340-- 	  gtk_box_pack_start (GTK_BOX (vbox), sw, TRUE, TRUE, 0);
341	
342-- 	  /* Create the store and fill it with the contents of '/' */
343-- 	  parent = g_strdup ("/");
344-- 	  store = create_store ();
345-- 	  fill_store (store);
346
347-- 	  icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (store));
348-- 	  gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (icon_view),
349-- 					    GTK_SELECTION_MULTIPLE);
350-- 	  g_object_unref (store);
351	
352-- 	  /* Connect to the "clicked" signal of the "Up" tool button */
353-- 	  g_signal_connect (up_button, "clicked",
354-- 			    G_CALLBACK (up_clicked), store);
355
356-- 	  /* Connect to the "clicked" signal of the "Home" tool button */
357-- 	  g_signal_connect (home_button, "clicked",
358-- 			    G_CALLBACK (home_clicked), store);
359	
360-- 	  /* We now set which model columns that correspond to the text
361-- 	   * and pixbuf of each item
362-- 	   */
363-- 	  gtk_icon_view_set_text_column (GTK_ICON_VIEW (icon_view), COL_DISPLAY_NAME);
364-- 	  gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (icon_view), COL_PIXBUF);
365
366-- 	  /* Connect to the "item_activated" signal */
367-- 	  g_signal_connect (icon_view, "item_activated",
368-- 			    G_CALLBACK (item_activated), store);
369-- 	  gtk_container_add (GTK_CONTAINER (sw), icon_view);
370
371-- 	  gtk_widget_grab_focus (icon_view);
372-- 	}
373--     }
374  
375--   if (!GTK_WIDGET_VISIBLE (window))
376--     gtk_widget_show_all (window);
377--   else
378--     {
379--       gtk_widget_destroy (window);
380--       window = NULL;
381--     }
382
383--   return window;
384-- }
385
386end