// // Copyright (C) 2013 Tom Beckmann, Rico Tzschichholz // // 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 Gala.Plugins.Zoom { public class Main : Gala.Plugin { const uint MOUSE_POLL_TIME = 50; Gala.WindowManager? wm = null; uint mouse_poll_timer = 0; float current_zoom = 1.0f; ulong wins_handler_id = 0UL; public override void initialize (Gala.WindowManager wm) { this.wm = wm; #if HAS_MUTTER330 var display = wm.get_display (); #else var display = wm.get_screen ().get_display (); #endif var schema = new GLib.Settings (Config.SCHEMA + ".keybindings"); display.add_keybinding ("zoom-in", schema, 0, (Meta.KeyHandlerFunc) zoom_in); display.add_keybinding ("zoom-out", schema, 0, (Meta.KeyHandlerFunc) zoom_out); } public override void destroy () { if (wm == null) return; #if HAS_MUTTER330 var display = wm.get_display (); #else var display = wm.get_screen ().get_display (); #endif display.remove_keybinding ("zoom-in"); display.remove_keybinding ("zoom-out"); if (mouse_poll_timer > 0) Source.remove (mouse_poll_timer); mouse_poll_timer = 0; } [CCode (instance_pos = -1)] #if HAS_MUTTER330 void zoom_in (Meta.Display display, Meta.Window? window, Clutter.KeyEvent event, Meta.KeyBinding binding) { #else void zoom_in (Meta.Display display, Meta.Screen screen, Meta.Window? window, Clutter.KeyEvent event, Meta.KeyBinding binding) { #endif zoom (true); } [CCode (instance_pos = -1)] #if HAS_MUTTER330 void zoom_out (Meta.Display display, Meta.Window? window, Clutter.KeyEvent event, Meta.KeyBinding binding) { #else void zoom_out (Meta.Display display, Meta.Screen screen, Meta.Window? window, Clutter.KeyEvent event, Meta.KeyBinding binding) { #endif zoom (false); } void zoom (bool @in) { // Nothing to do if zooming out of our bounds is requested if (current_zoom <= 1.0f && !@in) return; else if (current_zoom >= 2.5f && @in) return; var wins = wm.ui_group; // Add timer to poll current mouse position to reposition window-group // to show requested zoomed area if (mouse_poll_timer == 0) { float mx, my; var client_pointer = Gdk.Display.get_default ().get_device_manager ().get_client_pointer (); client_pointer.get_position (null, out mx, out my); wins.set_pivot_point (mx / wins.width, my / wins.height); mouse_poll_timer = Timeout.add (MOUSE_POLL_TIME, () => { client_pointer.get_position (null, out mx, out my); var new_pivot = Clutter.Point.alloc (); new_pivot.init (mx / wins.width, my / wins.height); if (wins.pivot_point.equals (new_pivot)) return true; wins.save_easing_state (); wins.set_easing_mode (Clutter.AnimationMode.LINEAR); wins.set_easing_duration (MOUSE_POLL_TIME); wins.pivot_point = new_pivot; wins.restore_easing_state (); return true; }); } current_zoom += (@in ? 0.5f : -0.5f); if (current_zoom <= 1.0f) { current_zoom = 1.0f; if (mouse_poll_timer > 0) Source.remove (mouse_poll_timer); mouse_poll_timer = 0; wins.save_easing_state (); wins.set_easing_mode (Clutter.AnimationMode.EASE_OUT_CUBIC); wins.set_easing_duration (300); wins.set_scale (1.0f, 1.0f); wins.restore_easing_state (); wins_handler_id = wins.transitions_completed.connect (() => { wins.disconnect (wins_handler_id); wins.set_pivot_point (0.0f, 0.0f); }); return; } wins.save_easing_state (); wins.set_easing_mode (Clutter.AnimationMode.EASE_OUT_CUBIC); wins.set_easing_duration (300); wins.set_scale (current_zoom, current_zoom); wins.restore_easing_state (); } } } public Gala.PluginInfo register_plugin () { return Gala.PluginInfo () { name = "Zoom", author = "Gala Developers", plugin_type = typeof (Gala.Plugins.Zoom.Main), provides = Gala.PluginFunction.ADDITION, load_priority = Gala.LoadPriority.IMMEDIATE }; }