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+/*
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////
+/// A window which allows selection of an Icon of the user's current icon
+/// theme. Loading of Icons happens in an extra thread and a spinner is
+/// displayed while loading.
+/////////////////////////////////////////////////////////////////////////
+
+public class IconSelectWindow : Gtk.Dialog {
+
+ private static Gtk.ListStore icon_list = null;
+
+ private static bool loading {get; set; default = false;}
+ private static bool need_reload {get; set; default = true;}
+
+ private const string disabled_contexts = "Animations, FileSystems, MimeTypes";
+ private Gtk.TreeModelFilter icon_list_filtered = null;
+ private Gtk.IconView icon_view = null;
+ private Gtk.Spinner spinner = null;
+
+ private Gtk.FileChooserWidget file_chooser = null;
+
+ private Gtk.Notebook tabs = null;
+
+ private class ListEntry {
+ public string name;
+ public IconContext context;
+ public Gdk.Pixbuf pixbuf;
+ }
+
+ private GLib.AsyncQueue<ListEntry?> load_queue;
+
+ private enum IconContext {
+ ALL,
+ APPS,
+ ACTIONS,
+ PLACES,
+ FILES,
+ EMOTES,
+ OTHER
+ }
+
+ public string _active_icon = "application-default-icon";
+
+ public string active_icon {
+ get {
+ return _active_icon;
+ }
+ set {
+ if (value.contains("/")) {
+ this.file_chooser.set_filename(value);
+ this.tabs.set_current_page(1);
+ } else {
+ this.icon_list_filtered.foreach((model, path, iter) => {
+ string name = "";
+ model.get(iter, 0, out name);
+
+ if (name == value) {
+ this.icon_view.select_path(path);
+ this.icon_view.scroll_to_path(path, true, 0.5f, 0.0f);
+ this.icon_view.set_cursor(path, null, false);
+ }
+ return (name == value);
+ });
+
+ this.tabs.set_current_page(0);
+ }
+ }
+ }
+
+ public signal void on_select(string icon_name);
+
+ public IconSelectWindow() {
+ this.title = _("Choose an Icon");
+ this.set_size_request(520, 520);
+ this.delete_event.connect(hide_on_delete);
+ this.load_queue = new GLib.AsyncQueue<ListEntry?>();
+
+ if (this.icon_list == null) {
+ this.icon_list = new Gtk.ListStore(3, typeof(string), typeof(IconContext), typeof(Gdk.Pixbuf));
+ this.icon_list.set_default_sort_func(() => {return 0;});
+
+ Gtk.IconTheme.get_default().changed.connect(() => {
+ if (this.visible) load_icons();
+ else need_reload = true;
+ });
+ }
+
+ this.icon_list_filtered = new Gtk.TreeModelFilter(this.icon_list, null);
+
+ var container = new Gtk.VBox(false, 12);
+ container.set_border_width(12);
+
+ // tab container
+ this.tabs = new Gtk.Notebook();
+
+ var theme_tab = new Gtk.VBox(false, 12);
+ theme_tab.set_border_width(12);
+
+ var context_combo = new Gtk.ComboBox.text();
+ context_combo.append_text(_("All icons"));
+ context_combo.append_text(_("Applications"));
+ context_combo.append_text(_("Actions"));
+ context_combo.append_text(_("Places"));
+ context_combo.append_text(_("File types"));
+ context_combo.append_text(_("Emotes"));
+ context_combo.append_text(_("Miscellaneous"));
+
+ context_combo.set_active(0);
+
+ context_combo.changed.connect(() => {
+ this.icon_list_filtered.refilter();
+ });
+
+ theme_tab.pack_start(context_combo, false, false);
+
+ var filter = new Gtk.Entry();
+ filter.primary_icon_stock = Gtk.Stock.FIND;
+ filter.primary_icon_activatable = false;
+ filter.secondary_icon_stock = Gtk.Stock.CLEAR;
+ theme_tab.pack_start(filter, false, false);
+
+ this.icon_list_filtered.set_visible_func((model, iter) => {
+ string name = "";
+ IconContext context = IconContext.ALL;
+ model.get(iter, 0, out name);
+ model.get(iter, 1, out context);
+
+ if (name == null) return false;
+
+ return (context_combo.get_active() == context ||
+ context_combo.get_active() == IconContext.ALL) &&
+ name.down().contains(filter.text.down());
+ });
+
+ filter.icon_release.connect((pos, event) => {
+ if (pos == Gtk.EntryIconPosition.SECONDARY)
+ filter.text = "";
+ });
+
+ filter.notify["text"].connect(() => {
+ this.icon_list_filtered.refilter();
+ });
+
+ var scroll = new Gtk.ScrolledWindow (null, null);
+ scroll.set_policy (Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);
+ scroll.set_shadow_type (Gtk.ShadowType.IN);
+
+ this.icon_view = new Gtk.IconView.with_model(this.icon_list_filtered);
+ this.icon_view.item_width = 32;
+ this.icon_view.item_padding = 3;
+ this.icon_view.pixbuf_column = 2;
+ this.icon_view.tooltip_column = 0;
+
+ this.icon_view.selection_changed.connect(() => {
+ foreach (var path in this.icon_view.get_selected_items()) {
+ Gtk.TreeIter iter;
+ this.icon_list_filtered.get_iter(out iter, path);
+ icon_list_filtered.get(iter, 0, out this._active_icon);
+ }
+ });
+
+ this.icon_view.item_activated.connect((path) => {
+ Gtk.TreeIter iter;
+ this.icon_list_filtered.get_iter(out iter, path);
+ this.icon_list_filtered.get(iter, 0, out this._active_icon);
+ this.on_select(this._active_icon);
+ this.hide();
+ });
+
+ scroll.add(this.icon_view);
+
+ theme_tab.pack_start(scroll, true, true);
+
+ tabs.append_page(theme_tab, new Gtk.Label(_("Icon Theme")));
+
+ var custom_tab = new Gtk.VBox(false, 6);
+ custom_tab.border_width = 12;
+
+ this.file_chooser = new Gtk.FileChooserWidget(Gtk.FileChooserAction.OPEN);
+ var file_filter = new Gtk.FileFilter();
+ file_filter.add_pixbuf_formats();
+ file_filter.set_name(_("All supported image formats"));
+ file_chooser.add_filter(file_filter);
+
+ file_chooser.selection_changed.connect(() => {
+ if (file_chooser.get_filename() != null && GLib.FileUtils.test(file_chooser.get_filename(), GLib.FileTest.IS_REGULAR))
+ this._active_icon = file_chooser.get_filename();
+ });
+
+ file_chooser.file_activated.connect(() => {
+ this._active_icon = file_chooser.get_filename();
+ this.on_select(this._active_icon);
+ this.hide();
+ });
+
+
+ custom_tab.pack_start(file_chooser, true, true);
+
+ tabs.append_page(custom_tab, new Gtk.Label(_("Custom Icon")));
+
+ container.pack_start(tabs, true, true);
+
+ // button box
+ var bottom_box = new Gtk.HBox(false, 0);
+
+ var bbox = new Gtk.HButtonBox();
+ bbox.set_spacing(6);
+ bbox.set_layout(Gtk.ButtonBoxStyle.END);
+
+ var cancel_button = new Gtk.Button.from_stock(Gtk.Stock.CANCEL);
+ cancel_button.clicked.connect(() => {
+ this.hide();
+ });
+ bbox.pack_start(cancel_button);
+
+ var ok_button = new Gtk.Button.from_stock(Gtk.Stock.OK);
+ ok_button.clicked.connect(() => {
+ this.on_select(this._active_icon);
+ this.hide();
+ });
+ bbox.pack_start(ok_button);
+
+ bottom_box.pack_end(bbox, false);
+
+ this.spinner = new Gtk.Spinner();
+ this.spinner.set_size_request(16, 16);
+ this.spinner.start();
+
+ bottom_box.pack_start(this.spinner, false, false);
+
+ container.pack_start(bottom_box, false, false);
+
+ this.vbox.pack_start(container, true, true);
+
+ this.vbox.show_all();
+
+ this.set_focus(this.icon_view);
+ }
+
+ public override void show() {
+ base.show();
+ this.action_area.hide();
+
+ if (this.need_reload) {
+ this.need_reload = false;
+ this.load_icons();
+ }
+ }
+
+ private void load_icons() {
+ if (!this.loading) {
+ this.loading = true;
+ this.icon_list.clear();
+
+ if (spinner != null)
+ this.spinner.visible = true;
+
+ this.icon_list.set_sort_column_id(-1, Gtk.SortType.ASCENDING);
+
+ try {
+ unowned Thread loader = Thread.create<void*>(load_thread, false);
+ loader.set_priority(ThreadPriority.LOW);
+ } catch (GLib.ThreadError e) {
+ error("Failed to create icon loader thread!");
+ }
+
+ Timeout.add(200, () => {
+ while (this.load_queue.length() > 0) {
+ var new_entry = this.load_queue.pop();
+ Gtk.TreeIter current;
+ this.icon_list.append(out current);
+ this.icon_list.set(current, 0, new_entry.name,
+ 1, new_entry.context,
+ 2, new_entry.pixbuf);
+ }
+
+ if (!this.loading) this.icon_list.set_sort_column_id(0, Gtk.SortType.ASCENDING);
+
+ return loading;
+ });
+ }
+ }
+
+ private void* load_thread() {
+ var icon_theme = Gtk.IconTheme.get_default();
+
+ foreach (var context in icon_theme.list_contexts()) {
+ if (!disabled_contexts.contains(context)) {
+ foreach (var icon in icon_theme.list_icons(context)) {
+ IconContext icon_context = IconContext.OTHER;
+ switch(context) {
+ case "Apps": case "Applications":
+ icon_context = IconContext.APPS; break;
+ case "Emotes":
+ icon_context = IconContext.EMOTES; break;
+ case "Places": case "Devices":
+ icon_context = IconContext.PLACES; break;
+ case "Mimetypes":
+ icon_context = IconContext.FILES; break;
+ case "Actions":
+ icon_context = IconContext.ACTIONS; break;
+ default: break;
+ }
+
+ try {
+ var new_entry = new ListEntry();
+ new_entry.name = icon;
+ new_entry.context = icon_context;
+ new_entry.pixbuf = icon_theme.load_icon(icon, 32, 0);
+
+ // some icons have only weird sizes... do not include them
+ if (new_entry.pixbuf.width == 32)
+ this.load_queue.push(new_entry);
+
+ } catch (GLib.Error e) {
+ warning("Failed to load image " + icon);
+ }
+ }
+ }
+ }
+
+ this.loading = false;
+
+ if (spinner != null)
+ spinner.visible = this.loading;
+
+ return null;
+ }
+}
+
+}
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