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livetrax/libs/widgets/barcontroller.cc

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/*
* Copyright (C) 2004 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <string>
#include <sstream>
#include <climits>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <pbd/controllable.h>
#include "gtkmm2ext/gtk_ui.h"
#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/keyboard.h"
#include "gtkmm2ext/cairo_widget.h"
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#include "widgets/barcontroller.h"
#include "pbd/i18n.h"
using namespace std;
using namespace Gtk;
using namespace Gtkmm2ext;
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using namespace ArdourWidgets;
BarController::BarController (Gtk::Adjustment& adj,
std::shared_ptr<PBD::Controllable> mc)
: _slider (&adj, mc, 60, 16)
, _switching (false)
, _switch_on_release (false)
{
add_events (Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
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set (.5, .5, 1.0, 1.0);
set_border_width (0);
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_slider.set_tweaks (ArdourFader::NoShowUnityLine);
_slider.StartGesture.connect (sigc::mem_fun(*this, &BarController::passtrhu_gesture_start));
_slider.StopGesture.connect (sigc::mem_fun(*this, &BarController::passtrhu_gesture_stop));
_slider.OnExpose.connect (sigc::mem_fun(*this, &BarController::before_expose));
_slider.set_name (get_name());
Gtk::SpinButton& spinner = _slider.get_spin_button();
spinner.signal_activate().connect (mem_fun (*this, &BarController::entry_activated));
spinner.signal_focus_out_event().connect (mem_fun (*this, &BarController::entry_focus_out));
if (mc && mc->is_gain_like ()) {
spinner.set_digits (2); // 0.01 dB
} else {
spinner.set_digits (4);
}
spinner.set_numeric (true);
spinner.set_name ("BarControlSpinner");
add (_slider);
show_all ();
}
BarController::~BarController ()
{
}
bool
BarController::on_button_press_event (GdkEventButton* ev)
{
if (get_child() != &_slider) {
return false;
}
if (ev->button == 1 && ev->type == GDK_2BUTTON_PRESS) {
_switch_on_release = true;
return true;
} else {
_switch_on_release = false;
}
return 1 == ev->button;
}
bool
BarController::on_button_release_event (GdkEventButton* ev)
{
if (get_child() != &_slider) {
return false;
}
if (ev->button == 1 && _switch_on_release) {
Glib::signal_idle().connect (mem_fun (*this, &BarController::switch_to_spinner));
return true;
}
return false;
}
void
BarController::on_style_changed (const Glib::RefPtr<Gtk::Style>&)
{
_slider.set_name (get_name());
}
gint
BarController::switch_to_bar ()
{
if (_switching || get_child() == &_slider) {
return FALSE;
}
_switching = true;
remove ();
add (_slider);
_slider.show ();
_slider.queue_draw ();
_switching = false;
SpinnerActive (false); /* EMIT SIGNAL */
return FALSE;
}
gint
BarController::switch_to_spinner ()
{
if (_switching || get_child() != &_slider) {
return FALSE;
}
_switching = true;
Gtk::SpinButton& spinner = _slider.get_spin_button();
if (spinner.get_parent()) {
spinner.get_parent()->remove(spinner);
}
remove ();
add (spinner);
spinner.show ();
spinner.select_region (0, spinner.get_text_length());
spinner.grab_focus ();
_switching = false;
SpinnerActive (true); /* EMIT SIGNAL */
return FALSE;
}
void
BarController::entry_activated ()
{
switch_to_bar ();
}
bool
BarController::entry_focus_out (GdkEventFocus* /*ev*/)
{
entry_activated ();
return true;
}
void
BarController::before_expose ()
{
double xpos = -1;
_slider.set_text (get_label (xpos), false, false);
}
void
BarController::set_sensitive (bool yn)
{
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Alignment::set_sensitive (yn);
_slider.set_sensitive (yn);
}