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Diffstat (limited to 'src/gui/triggerSelectButton.vala')
| -rw-r--r-- | src/gui/triggerSelectButton.vala | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/gui/triggerSelectButton.vala b/src/gui/triggerSelectButton.vala new file mode 100644 index 0000000..eeb37e2 --- /dev/null +++ b/src/gui/triggerSelectButton.vala @@ -0,0 +1,161 @@ +/* +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 { + +///////////////////////////////////////////////////////////////////////// +/// This window allows the selection of a hotkey. It is returned in form +/// of a Trigger. Therefore it can be either a keyboard driven hotkey or +/// a mouse based hotkey. +///////////////////////////////////////////////////////////////////////// + +public class TriggerSelectButton : Gtk.ToggleButton { + + ///////////////////////////////////////////////////////////////////// + /// This signal is emitted when the user selects a new hot key. + ///////////////////////////////////////////////////////////////////// + + public signal void on_select(Trigger trigger); + + ///////////////////////////////////////////////////////////////////// + /// The currently contained Trigger. + ///////////////////////////////////////////////////////////////////// + + private Trigger trigger = null; + + ///////////////////////////////////////////////////////////////////// + /// True, if mouse buttons can be bound as well. + ///////////////////////////////////////////////////////////////////// + + private bool enable_mouse = false; + + ///////////////////////////////////////////////////////////////////// + /// These modifiers are ignored. + ///////////////////////////////////////////////////////////////////// + + private Gdk.ModifierType lock_modifiers = Gdk.ModifierType.MOD2_MASK + |Gdk.ModifierType.LOCK_MASK + |Gdk.ModifierType.MOD5_MASK; + + ///////////////////////////////////////////////////////////////////// + /// C'tor, constructs a new TriggerSelectWindow. + ///////////////////////////////////////////////////////////////////// + + public TriggerSelectButton(bool enable_mouse) { + this.enable_mouse = enable_mouse; + + this.toggled.connect(() => { + if (this.active) { + this.set_label(_("Press a hotkey ...")); + Gtk.grab_add(this); + FocusGrabber.grab(this.get_window(), true, true, true); + } + }); + + this.button_press_event.connect(this.on_button_press); + this.key_press_event.connect(this.on_key_press); + this.set_trigger(new Trigger()); + } + + ///////////////////////////////////////////////////////////////////// + /// Makes the button display the given Trigger. + ///////////////////////////////////////////////////////////////////// + + public void set_trigger(Trigger trigger) { + this.trigger = trigger; + this.set_label(trigger.label); + } + + ///////////////////////////////////////////////////////////////////// + /// Can be called to cancel the selection process. + ///////////////////////////////////////////////////////////////////// + + private void cancel() { + this.set_label(trigger.label); + this.set_active(false); + Gtk.grab_remove(this); + FocusGrabber.ungrab(true, true); + } + + ///////////////////////////////////////////////////////////////////// + /// Makes the button display the given Trigger. + ///////////////////////////////////////////////////////////////////// + + private void update_trigger(Trigger trigger) { + if (this.trigger.name != trigger.name) { + this.set_trigger(trigger); + this.on_select(this.trigger); + } + + this.cancel(); + } + + ///////////////////////////////////////////////////////////////////// + /// Called when the user presses a keyboard key. + ///////////////////////////////////////////////////////////////////// + + private bool on_key_press(Gdk.EventKey event) { + if (this.active) { + if (Gdk.keyval_name(event.keyval) == "Escape") { + this.cancel(); + } else if (Gdk.keyval_name(event.keyval) == "BackSpace") { + this.update_trigger(new Trigger()); + } else if (event.is_modifier == 0) { + Gdk.ModifierType state = event.state & ~ this.lock_modifiers; + this.update_trigger(new Trigger.from_values(event.keyval, state, false, false, false, false)); + } + + return true; + } + return false; + } + + ///////////////////////////////////////////////////////////////////// + /// Called when the user presses a button of the mouse. + ///////////////////////////////////////////////////////////////////// + + private bool on_button_press(Gdk.EventButton event) { + if (this.active) { + Gtk.Allocation rect; + this.get_allocation(out rect); + if (event.x < rect.x || event.x > rect.x + rect.width + || event.y < rect.y || event.y > rect.y + rect.height) { + + this.cancel(); + return true; + } + } + + if (this.active && this.enable_mouse) { + Gdk.ModifierType state = event.state & ~ this.lock_modifiers; + var new_trigger = new Trigger.from_values((int)event.button, state, true, + false, false, false); + + if (new_trigger.key_code != 1) this.update_trigger(new_trigger); + else this.cancel(); + + return true; + } else if (this.active) { + this.cancel(); + return true; + } + + return false; + } +} + +} |