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128 lines
3.2 KiB
Vala
128 lines
3.2 KiB
Vala
//
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// Copyright (C) 2012 Tom Beckmann, Rico Tzschichholz
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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namespace Gala
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{
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/**
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* Creates a new GtkClutterTexture with an icon for the window at the given size.
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* This is recommended way to grab an icon for a window as this method will make
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* sure the icon is updated if it becomes available at a later point.
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*/
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public class WindowIcon : GtkClutter.Texture
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{
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static Bamf.Matcher matcher;
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static construct
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{
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matcher = Bamf.Matcher.get_default ();
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}
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public Meta.Window window { get; construct; }
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public int icon_size { get; construct; }
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/**
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* If set to true, the SafeWindowClone will destroy itself when the connected
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* window is unmanaged
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*/
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public bool destroy_on_unmanaged {
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get {
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return _destroy_on_unmanaged;
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}
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construct set {
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if (_destroy_on_unmanaged == value)
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return;
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_destroy_on_unmanaged = value;
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if (_destroy_on_unmanaged)
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window.unmanaged.connect (unmanaged);
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else
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window.unmanaged.disconnect (unmanaged);
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}
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}
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bool _destroy_on_unmanaged = false;
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bool loaded = false;
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uint32 xid;
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/**
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* Creates a new WindowIcon
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*
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* @param window The window for which to create the icon
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* @param icon_size The size of the icon in pixels
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* @param destroy_on_unmanaged see destroy_on_unmanaged property
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*/
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public WindowIcon (Meta.Window window, int icon_size, bool destroy_on_unmanaged = false)
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{
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Object (window: window,
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icon_size: icon_size,
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destroy_on_unmanaged: destroy_on_unmanaged);
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}
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construct
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{
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width = icon_size;
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height = icon_size;
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xid = (uint32) window.get_xwindow ();
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// new windows often reach mutter earlier than bamf, that's why
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// we have to wait until the next window opens and hope that it's
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// ours so we can get a proper icon instead of the default fallback.
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var app = matcher.get_application_for_xid (xid);
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if (app == null)
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matcher.view_opened.connect (retry_load);
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else
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loaded = true;
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update_texture (true);
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}
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~WindowIcon ()
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{
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if (!loaded)
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matcher.view_opened.disconnect (retry_load);
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}
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void retry_load (Bamf.View view)
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{
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var app = matcher.get_application_for_xid (xid);
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// retry only once
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loaded = true;
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matcher.view_opened.disconnect (retry_load);
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if (app == null)
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return;
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update_texture (false);
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}
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void update_texture (bool initial)
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{
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var pixbuf = Gala.Utils.get_icon_for_xid (xid, icon_size, !initial);
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try {
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set_from_pixbuf (pixbuf);
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} catch (Error e) {}
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}
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void unmanaged (Meta.Window window)
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{
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destroy ();
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}
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}
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}
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