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add an iconview example
svn path=/trunk/gtk-sharp/; revision=48370
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2005-08-14 John Luke <john.luke@gmail.com>
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* en/Gtk/IconView.xml: add iconview example
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based on GtkDemo code
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2005-08-09 Dan Winship <danw@novell.com>
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* en/index.xml: remove gda/gnomedb docs
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@ -10,6 +10,174 @@
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<summary>A widget which displays a list of icons in a grid</summary>
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<remarks>
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<see cref="T:Gtk.IconView" /> provides an alternative view on a list model. It displays the model as a grid of icons with labels. Like <see cref="T:Gtk.TreeView" />, it allows to select one or multiple items (depending on the selection mode, see <see cref="P:Gtk.IconView.SelectionMode" />). In addition to selection with the arrow keys, <see cref="T:Gtk.IconView" /> supports rubberband selection, which is controlled by dragging the pointer.</remarks>
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<example>
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<code lang="C#">
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using System;
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using System.IO;
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using Gtk;
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public class DemoIconView : Window
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{
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const int COL_PATH = 0;
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const int COL_DISPLAY_NAME = 1;
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const int COL_PIXBUF = 2;
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const int COL_IS_DIRECTORY = 3;
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DirectoryInfo parent = new DirectoryInfo ("/");
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Gdk.Pixbuf dirIcon, fileIcon;
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ListStore store;
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ToolButton upButton;
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static void Main ()
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{
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Application.Init ();
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new DemoIconView ();
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Application.Run ();
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}
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public DemoIconView () : base ("Gtk.IconView demo")
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{
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SetDefaultSize (650, 400);
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DeleteEvent += new DeleteEventHandler (OnWinDelete);
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VBox vbox = new VBox (false, 0);
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Add (vbox);
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Toolbar toolbar = new Toolbar ();
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vbox.PackStart (toolbar, false, false, 0);
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upButton = new ToolButton (Stock.GoUp);
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upButton.IsImportant = true;
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upButton.Sensitive = false;
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toolbar.Insert (upButton, -1);
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ToolButton homeButton = new ToolButton (Stock.Home);
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homeButton.IsImportant = true;
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toolbar.Insert (homeButton, -1);
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fileIcon = GetIcon ("gnome-fs-regular");
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dirIcon = GetIcon ("gnome-fs-directory");
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ScrolledWindow sw = new ScrolledWindow ();
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sw.ShadowType = ShadowType.EtchedIn;
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sw.SetPolicy (PolicyType.Automatic, PolicyType.Automatic);
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vbox.PackStart (sw, true, true, 0);
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// Create the store and fill it with the contents of '/'
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store = CreateStore ();
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FillStore ();
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IconView iconView = new IconView (store);
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iconView.SelectionMode = SelectionMode.Multiple;
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upButton.Clicked += OnUpClicked;
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homeButton.Clicked += OnHomeClicked;
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iconView.TextColumn = COL_DISPLAY_NAME;
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iconView.PixbufColumn = COL_PIXBUF;
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iconView.ItemActivated += new ItemActivatedHandler (OnItemActivated);
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sw.Add (iconView);
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iconView.GrabFocus ();
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ShowAll ();
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}
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Gdk.Pixbuf GetIcon (string name)
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{
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return Gtk.IconTheme.Default.LoadIcon (name, 48, (IconLookupFlags) 0);
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}
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ListStore CreateStore ()
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{
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// path, name, pixbuf, is_dir
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ListStore store = new ListStore (typeof (string), typeof (string), typeof (Gdk.Pixbuf), typeof (bool));
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// Set sort column and function
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store.DefaultSortFunc = SortFunc;
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store.SetSortColumnId (COL_DISPLAY_NAME, SortType.Ascending);
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return store;
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}
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void FillStore ()
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{
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// first clear the store
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store.Clear ();
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// Now go through the directory and extract all the file information
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if (!parent.Exists)
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return;
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foreach (DirectoryInfo di in parent.GetDirectories ())
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{
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if (!di.Name.StartsWith ("."))
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store.AppendValues (di.FullName, di.Name, dirIcon, true);
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}
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foreach (FileInfo file in parent.GetFiles ())
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{
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if (!file.Name.StartsWith ("."))
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store.AppendValues (file.FullName, file.Name, fileIcon, false);
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}
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}
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int SortFunc (TreeModel model, TreeIter a, TreeIter b)
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{
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// sorts folders before files
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bool a_is_dir = (bool) model.GetValue (a, COL_IS_DIRECTORY);
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bool b_is_dir = (bool) model.GetValue (b, COL_IS_DIRECTORY);
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string a_name = (string) model.GetValue (a, COL_DISPLAY_NAME);
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string b_name = (string) model.GetValue (b, COL_DISPLAY_NAME);
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if (!a_is_dir && b_is_dir)
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return 1;
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else if (a_is_dir && !b_is_dir)
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return -1;
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else
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return String.Compare (a_name, b_name);
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}
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void OnHomeClicked (object sender, EventArgs a)
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{
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parent = new DirectoryInfo (Environment.GetFolderPath (Environment.SpecialFolder.Personal));
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FillStore ();
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upButton.Sensitive = true;
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}
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void OnItemActivated (object sender, ItemActivatedArgs a)
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{
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TreeIter iter;
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store.GetIter (out iter, a.Path);
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string path = (string) store.GetValue (iter, COL_PATH);
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bool isDir = (bool) store.GetValue (iter, COL_IS_DIRECTORY);
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if (!isDir)
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return;
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// Replace parent with path and re-fill the model
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parent = new DirectoryInfo (path);
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FillStore ();
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// Sensitize the up button
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upButton.Sensitive = true;
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}
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void OnUpClicked (object sender, EventArgs a)
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{
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parent = parent.Parent;
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FillStore ();
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upButton.Sensitive = (parent.FullName == "/" ? false : true);
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}
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void OnWinDelete (object sender, DeleteEventArgs a)
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{
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Application.Quit ();
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a.RetVal = true;
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}
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}
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</code>
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</example>
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<since version="Gtk# 2.6" />
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</Docs>
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<Base>
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