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livetrax/gtk2_ardour/floating_text_entry.cc

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/*
Copyright (C) 2014 Paul Davis
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "pbd/stacktrace.h"
#include "public_editor.h"
#include "floating_text_entry.h"
#include "gtkmm2ext/doi.h"
#include "gtkmm2ext/utils.h"
#include "pbd/i18n.h"
FloatingTextEntry::FloatingTextEntry (Gtk::Window* parent, const std::string& initial_contents)
: Gtk::Window ()
, entry_changed (false)
{
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//set_name (X_("FloatingTextEntry"));
set_position (Gtk::WIN_POS_MOUSE);
set_border_width (0);
set_type_hint(Gdk::WINDOW_TYPE_HINT_POPUP_MENU);
set_resizable (false);
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if (!initial_contents.empty()) {
entry.set_text (initial_contents);
}
entry.show ();
_connections.push_back (entry.signal_changed().connect (sigc::mem_fun (*this, &FloatingTextEntry::changed)));
_connections.push_back (entry.signal_activate().connect (sigc::mem_fun (*this, &FloatingTextEntry::activated)));
_connections.push_back (entry.signal_key_press_event().connect (sigc::mem_fun (*this, &FloatingTextEntry::key_press), false));
_connections.push_back (entry.signal_key_release_event().connect (sigc::mem_fun (*this, &FloatingTextEntry::key_release), false));
_connections.push_back (entry.signal_button_press_event().connect (sigc::mem_fun (*this, &FloatingTextEntry::button_press)));
entry.select_region (0, -1);
if (parent) {
set_transient_for (*parent);
}
add (entry);
}
void
FloatingTextEntry::changed ()
{
entry_changed = true;
}
void
FloatingTextEntry::on_realize ()
{
Gtk::Window::on_realize ();
get_window()->set_decorations (Gdk::WMDecoration (0));
set_keep_above (true);
entry.add_modal_grab ();
}
bool
FloatingTextEntry::entry_focus_out (GdkEventFocus* ev)
{
entry.remove_modal_grab ();
if (entry_changed) {
disconect_signals ();
use_text (entry.get_text (), 0); /* EMIT SIGNAL */
}
idle_delete_self ();
return false;
}
bool
FloatingTextEntry::button_press (GdkEventButton* ev)
{
if (Gtkmm2ext::event_inside_widget_window (*this, (GdkEvent*) ev)) {
return true;
}
/* Clicked outside widget window - edit is done */
entry.remove_modal_grab ();
/* arrange re-propagation of the event once we go idle */
Glib::signal_idle().connect (sigc::bind_return (sigc::bind (sigc::ptr_fun (gtk_main_do_event), gdk_event_copy ((GdkEvent*) ev)), false));
if (entry_changed) {
disconect_signals ();
use_text (entry.get_text (), 0); /* EMIT SIGNAL */
}
idle_delete_self ();
return false;
}
void
FloatingTextEntry::activated ()
{
disconect_signals ();
use_text (entry.get_text(), 0); // EMIT SIGNAL
idle_delete_self ();
}
bool
FloatingTextEntry::key_press (GdkEventKey* ev)
{
/* steal escape, tabs from GTK */
switch (ev->keyval) {
case GDK_Escape:
case GDK_ISO_Left_Tab:
case GDK_Tab:
return true;
}
return false;
}
bool
FloatingTextEntry::key_release (GdkEventKey* ev)
{
switch (ev->keyval) {
case GDK_Escape:
/* cancel edit */
idle_delete_self ();
return true;
case GDK_ISO_Left_Tab:
/* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
* generates a different ev->keyval, rather than setting
* ev->state.
*/
disconect_signals ();
use_text (entry.get_text(), -1); // EMIT SIGNAL, move to prev
idle_delete_self ();
return true;
case GDK_Tab:
disconect_signals ();
use_text (entry.get_text(), 1); // EMIT SIGNAL, move to next
idle_delete_self ();
return true;
default:
break;
}
return false;
}
void
FloatingTextEntry::on_hide ()
{
entry.remove_modal_grab ();
/* No hide button is shown (no decoration on the window),
* so being hidden is equivalent to the Escape key or any other
* method of cancelling the edit.
*
* This is also used during disconect_signals() before calling
* use_text (). see note below.
*
* If signals are already disconnected, idle-delete must be
* in progress already.
*/
if (!_connections.empty ()) {
idle_delete_self ();
}
Gtk::Window::on_hide ();
}
void
FloatingTextEntry::disconect_signals ()
{
for (std::list<sigc::connection>::iterator i = _connections.begin(); i != _connections.end(); ++i) {
i->disconnect ();
}
_connections.clear ();
/* the entry is floating on-top, emitting use_text()
* may result in another dialog being shown (cannot rename track)
* which would
* - be stacked below the floating text entry
* - return focus to the entry when closedA
* so we hide the entry here.
*/
hide ();
}
void
FloatingTextEntry::idle_delete_self ()
{
disconect_signals ();
delete_when_idle (this);
}