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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="toolbar.vala" xml:lang="cs">
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<info>
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<title type="text">Toolbar (Vala)</title>
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<link type="guide" xref="beginner.vala#menu-combo-toolbar"/>
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<link type="seealso" xref="grid.vala"/>
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<revision version="0.1" date="2012-05-08" status="draft"/>
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<credit type="author copyright">
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<name>Tiffany Antopolski</name>
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<email its:translate="no">tiffany.antopolski@gmail.com</email>
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<years>2012</years>
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</credit>
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<desc>Lišta s tlačítky</desc>
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</info>
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<title>Toolbar</title>
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<media type="image" mime="image/png" src="media/toolbar.png"/>
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Nástrojová lišta může obsahovat text nebo standardní ikony. V tomto příkladu používáme standardní ikony. Tento příklad obsahuje funkci pro zobrazení na celou obrazovku.
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Tento příklad používá SimpleAction (pro okno i aplikaci). Akce aplikace lze snadno přidat do aplikační nabídky.
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/* Toto je okno */
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class MyWindow : Gtk.ApplicationWindow {
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/* Instance proměnných náležejících k oknu */
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Gtk.Toolbar toolbar;
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Gtk.ToolButton new_button;
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Gtk.ToolButton open_button;
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Gtk.ToolButton undo_button;
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Gtk.ToolButton fullscreen_button;
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Gtk.ToolButton leave_fullscreen_button;
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/* Konstruktor */
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internal MyWindow (MyApplication app) {
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Object (application: app, title: "Toolbar Example");
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this.set_default_size (400, 200);
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var grid = new Gtk.Grid ();
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this.add (grid);
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grid.show ();
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create_toolbar ();
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toolbar.set_hexpand (true);
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grid.attach (toolbar, 0, 0, 1, 1);
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toolbar.show ();
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/* Vytvoří akci okna "undo" */
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var undo_action = new SimpleAction ("undo", null);
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undo_action.activate.connect (undo_callback);
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this.add_action (undo_action);
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/* Vytvoří akci okna "fullscreen" */
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var fullscreen_action = new SimpleAction ("fullscreen", null);
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fullscreen_action.activate.connect (fullscreen_callback);
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this.add_action (fullscreen_action);
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}
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/* Tato funkce vytvoří nástrojovou lištu, její tlačítka a
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* těm přiřadí názvy akcí*/
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void create_toolbar () {
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toolbar = new Gtk.Toolbar ();
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toolbar.get_style_context ().add_class (Gtk.STYLE_CLASS_PRIMARY_TOOLBAR);
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new_button = new Gtk.ToolButton.from_stock (Gtk.Stock.NEW);
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new_button.is_important = true; //decides whether to show the label
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toolbar.add (new_button);
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new_button.show ();
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new_button.action_name = "app.new";
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open_button = new Gtk.ToolButton.from_stock (Gtk.Stock.OPEN);
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open_button.is_important = true;
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toolbar.add (open_button);
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open_button.show ();
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open_button.action_name = "app.open";
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undo_button = new Gtk.ToolButton.from_stock (Gtk.Stock.UNDO);
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undo_button.is_important = true;
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toolbar.add (undo_button);
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undo_button.show ();
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undo_button.action_name = "win.undo";
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fullscreen_button = new Gtk.ToolButton.from_stock (Gtk.Stock.FULLSCREEN);
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fullscreen_button.is_important = true;
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toolbar.add (fullscreen_button);
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fullscreen_button.show ();
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fullscreen_button.action_name = "win.fullscreen";
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leave_fullscreen_button = new Gtk.ToolButton.from_stock (Gtk.Stock.LEAVE_FULLSCREEN)
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;
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leave_fullscreen_button.is_important = true;
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toolbar.add (leave_fullscreen_button);
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leave_fullscreen_button.action_name = "win.fullscreen";
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}
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void undo_callback (SimpleAction simple, Variant? parameter) {
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print ("You clicked \"Undo\".\n");
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}
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void fullscreen_callback (SimpleAction simple, Variant? parameter) {
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if ((this.get_window ().get_state () & Gdk.WindowState.FULLSCREEN) != 0) {
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this.unfullscreen ();
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leave_fullscreen_button.hide ();
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fullscreen_button.show ();
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}
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else {
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this.fullscreen ();
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fullscreen_button.hide ();
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leave_fullscreen_button.show ();
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}
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}
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}
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/* Toto je aplikace */
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class MyApplication : Gtk.Application {
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protected override void activate () {
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new MyWindow (this).show ();
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}
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protected override void startup () {
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base.startup ();
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/* Vytvoří akci "new" a přidá ji do aplikace */
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var new_action = new SimpleAction ("new", null);
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new_action.activate.connect (new_callback);
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this.add_action (new_action);
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/* Vytvoří akci "open" a přidá ji do aplikace */
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var open_action = new SimpleAction ("open", null);
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open_action.activate.connect (open_callback);
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this.add_action (open_action);
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/* Jestli chcete, můžete akci přidat i do aplikační
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* nabídky
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*/
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//var menu = new Menu ();
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//menu.append ("New", "app.new");
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//this.app_menu = menu;
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}
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void new_callback (SimpleAction action, Variant? parameter) {
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print ("You clicked \"New\".\n");
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}
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void open_callback (SimpleAction action, Variant? parameter) {
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print ("You clicked \"Open\".\n");
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}
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}
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/* Funkce main vytvoří aplikaci a spustí ji */
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int main (string[] args) {
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return new MyApplication ().run (args);
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}
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V této ukázce se používá následující:
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<list>
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<item><link href="http://www.valadoc.org/gtk+-3.0/Gtk.Toolbar.html">Gtk.Toolbar</link> </item>
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<item><link href="http://www.valadoc.org/gtk+-3.0/Gtk.ToolButton.html">Gtk.Toolbutton</link> </item>
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<item><link href="http://www.valadoc.org/gtk+-3.0/Gtk.Stock.html">Gtk.Stock</link> </item>
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</list>
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</page>
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