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/////////////////////////////////////////////////////////////////////////
// Copyright 2011-2018 Simon Schneegans
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/////////////////////////////////////////////////////////////////////////
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.MOD4_MASK
|Gdk.ModifierType.MOD5_MASK
|Gdk.ModifierType.LOCK_MASK;
/////////////////////////////////////////////////////////////////////
/// C'tor, constructs a new TriggerSelectButton.
/////////////////////////////////////////////////////////////////////
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());
}
});
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();
}
/////////////////////////////////////////////////////////////////////
/// 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, false, 5));
}
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 < 0 || event.x > rect.width
|| event.y < 0 || event.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, false, 5);
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;
}
}
}
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