mirror of
https://github.com/elementary/gala.git
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137 lines
3.7 KiB
Vala
137 lines
3.7 KiB
Vala
//
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// Copyright (C) 2013 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.Plugins.Zoom
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{
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public class Main : Gala.Plugin
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{
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const uint MOUSE_POLL_TIME = 50;
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Gala.WindowManager? wm = null;
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uint mouse_poll_timer = 0;
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float current_zoom = 1.0f;
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public override void initialize (Gala.WindowManager wm)
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{
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this.wm = wm;
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var display = wm.get_screen ().get_display ();
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var schema = new GLib.Settings (Config.SCHEMA + ".keybindings");
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display.add_keybinding ("zoom-in", schema, 0, zoom_in);
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display.add_keybinding ("zoom-out", schema, 0, zoom_out);
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}
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public override void destroy ()
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{
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if (wm == null)
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return;
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var display = wm.get_screen ().get_display ();
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display.remove_keybinding ("zoom-in");
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display.remove_keybinding ("zoom-out");
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if (mouse_poll_timer > 0)
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Source.remove (mouse_poll_timer);
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mouse_poll_timer = 0;
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}
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void zoom_in (Meta.Display display, Meta.Screen screen,
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#if HAS_MUTTER314
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Meta.Window? window, Clutter.KeyEvent event, Meta.KeyBinding binding)
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#else
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Meta.Window? window, X.Event event, Meta.KeyBinding binding)
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#endif
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{
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zoom (true);
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}
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void zoom_out (Meta.Display display, Meta.Screen screen,
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#if HAS_MUTTER314
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Meta.Window? window, Clutter.KeyEvent event, Meta.KeyBinding binding)
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#else
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Meta.Window? window, X.Event event, Meta.KeyBinding binding)
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#endif
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{
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zoom (false);
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}
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void zoom (bool @in)
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{
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// Nothing to do if zooming out of our bounds is requested
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if (current_zoom <= 1.0f && !@in)
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return;
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else if (current_zoom >= 2.5f && @in)
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return;
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var wins = wm.ui_group;
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// Add timer to poll current mouse position to reposition window-group
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// to show requested zoomed area
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if (mouse_poll_timer == 0) {
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float mx, my;
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var client_pointer = Gdk.Display.get_default ().get_device_manager ().get_client_pointer ();
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client_pointer.get_position (null, out mx, out my);
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wins.scale_center_x = mx;
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wins.scale_center_y = my;
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mouse_poll_timer = Timeout.add (MOUSE_POLL_TIME, () => {
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client_pointer.get_position (null, out mx, out my);
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if (wins.scale_center_x == mx && wins.scale_center_y == my)
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return true;
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wins.animate (Clutter.AnimationMode.LINEAR, MOUSE_POLL_TIME, scale_center_x : mx, scale_center_y : my);
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return true;
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});
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}
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current_zoom += (@in ? 0.5f : -0.5f);
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if (current_zoom <= 1.0f) {
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current_zoom = 1.0f;
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if (mouse_poll_timer > 0)
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Source.remove (mouse_poll_timer);
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mouse_poll_timer = 0;
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wins.animate (Clutter.AnimationMode.EASE_OUT_CUBIC, 300, scale_x : 1.0f, scale_y : 1.0f).completed.connect (() => {
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wins.scale_center_x = 0.0f;
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wins.scale_center_y = 0.0f;
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});
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return;
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}
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wins.animate (Clutter.AnimationMode.EASE_OUT_CUBIC, 300, scale_x : current_zoom, scale_y : current_zoom);
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}
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}
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}
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public Gala.PluginInfo register_plugin ()
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{
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return Gala.PluginInfo () {
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name = "Zoom",
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author = "Gala Developers",
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plugin_type = typeof (Gala.Plugins.Zoom.Main),
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provides = Gala.PluginFunction.ADDITION,
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load_priority = Gala.LoadPriority.IMMEDIATE
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};
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}
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