541 lines
10 KiB
C++
541 lines
10 KiB
C++
/*
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Copyright (C) 2004 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <string>
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#include <climits>
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#include <cstdio>
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#include <cmath>
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#include <algorithm>
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#include <midi++/controllable.h>
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#include <gtkmm2ext/gtk_ui.h>
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#include <gtkmm2ext/utils.h>
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#include <gtkmm2ext/barcontroller.h>
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#include "i18n.h"
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using namespace std;
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using namespace Gtk;
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using namespace Gtkmm2ext;
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BarController::BarController (Gtk::Adjustment& adj,
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MIDI::Controllable *mc,
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sigc::slot<void,char*,unsigned int> lc)
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: adjustment (adj),
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prompter (Gtk::WIN_POS_MOUSE, 30000, false),
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midi_control (mc),
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label_callback (lc),
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spinner (adjustment),
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bind_button (2),
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bind_statemask (Gdk::CONTROL_MASK)
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{
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_style = LeftToRight;
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grabbed = false;
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switching = false;
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switch_on_release = false;
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with_text = true;
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use_parent = false;
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layout = darea.create_pango_layout("");
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set_shadow_type (SHADOW_NONE);
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initial_value = adjustment.get_value ();
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adjustment.signal_value_changed().connect (mem_fun (*this, &Gtk::Widget::queue_draw));
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adjustment.signal_changed().connect (mem_fun (*this, &Gtk::Widget::queue_draw));
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darea.add_events (Gdk::BUTTON_RELEASE_MASK|
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Gdk::BUTTON_PRESS_MASK|
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Gdk::POINTER_MOTION_MASK|
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Gdk::ENTER_NOTIFY_MASK|
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Gdk::LEAVE_NOTIFY_MASK|
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Gdk::SCROLL_MASK);
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darea.signal_expose_event().connect (mem_fun (*this, &BarController::expose));
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darea.signal_motion_notify_event().connect (mem_fun (*this, &BarController::motion));
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darea.signal_button_press_event().connect (mem_fun (*this, &BarController::button_press));
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darea.signal_button_release_event().connect (mem_fun (*this, &BarController::button_release));
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darea.signal_scroll_event().connect (mem_fun (*this, &BarController::scroll));
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prompter.signal_unmap_event().connect (mem_fun (*this, &BarController::prompter_hiding));
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prompting = false;
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unprompting = false;
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if (mc) {
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mc->learning_started.connect (mem_fun (*this, &BarController::midicontrol_prompt));
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mc->learning_stopped.connect (mem_fun (*this, &BarController::midicontrol_unprompt));
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}
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spinner.signal_activate().connect (mem_fun (*this, &BarController::entry_activated));
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spinner.signal_focus_out_event().connect (mem_fun (*this, &BarController::entry_focus_out));
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spinner.set_digits (3);
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add (darea);
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show_all ();
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}
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void
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BarController::set_bind_button_state (guint button, guint statemask)
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{
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bind_button = button;
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bind_statemask = statemask;
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}
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void
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BarController::get_bind_button_state (guint &button, guint &statemask)
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{
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button = bind_button;
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statemask = bind_statemask;
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}
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bool
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BarController::button_press (GdkEventButton* ev)
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{
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switch (ev->button) {
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case 1:
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if (ev->type == GDK_2BUTTON_PRESS) {
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switch_on_release = true;
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grabbed = false;
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darea.remove_modal_grab();
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} else {
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switch_on_release = false;
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darea.add_modal_grab();
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grabbed = true;
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grab_x = ev->x;
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grab_window = ev->window;
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StartGesture ();
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}
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return true;
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break;
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case 2:
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case 3:
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break;
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case 4:
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case 5:
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break;
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}
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return false;
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}
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bool
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BarController::button_release (GdkEventButton* ev)
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{
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switch (ev->button) {
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case 1:
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if (switch_on_release) {
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Glib::signal_idle().connect (mem_fun (*this, &BarController::switch_to_spinner));
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return true;
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}
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if ((ev->state & (GDK_SHIFT_MASK|GDK_CONTROL_MASK)) == GDK_SHIFT_MASK) {
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adjustment.set_value (initial_value);
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} else {
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double scale;
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if (ev->state & (GDK_CONTROL_MASK|GDK_SHIFT_MASK) == (GDK_CONTROL_MASK|GDK_SHIFT_MASK)) {
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scale = 0.01;
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} else if (ev->state & GDK_CONTROL_MASK) {
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scale = 0.1;
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} else {
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scale = 1.0;
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}
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mouse_control (ev->x, ev->window, scale);
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}
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darea.remove_modal_grab();
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grabbed = false;
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StopGesture ();
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grabbed = false;
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break;
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case 2:
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if ((ev->state & bind_statemask) && bind_button == 2) {
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midi_learn ();
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} else {
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double fract;
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fract = ev->x / (darea.get_width() - 2.0);
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adjustment.set_value (adjustment.get_lower() +
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fract * (adjustment.get_upper() - adjustment.get_lower()));
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}
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return true;
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case 3:
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if ((ev->state & bind_statemask) && bind_button == 3) {
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midi_learn ();
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return TRUE;
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}
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return false;
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default:
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break;
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}
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return true;
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}
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bool
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BarController::scroll (GdkEventScroll* ev)
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{
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double scale;
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if (ev->state & (GDK_CONTROL_MASK|GDK_SHIFT_MASK) == (GDK_CONTROL_MASK|GDK_SHIFT_MASK)) {
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scale = 0.01;
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} else if (ev->state & GDK_CONTROL_MASK) {
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scale = 0.1;
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} else {
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scale = 1.0;
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}
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switch (ev->direction) {
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case GDK_SCROLL_UP:
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case GDK_SCROLL_RIGHT:
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adjustment.set_value (adjustment.get_value() + (scale * adjustment.get_step_increment()));
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break;
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case GDK_SCROLL_DOWN:
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case GDK_SCROLL_LEFT:
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adjustment.set_value (adjustment.get_value() - (scale * adjustment.get_step_increment()));
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break;
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}
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return true;
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}
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bool
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BarController::motion (GdkEventMotion* ev)
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{
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double scale;
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if (!grabbed) {
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return TRUE;
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}
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if ((ev->state & (GDK_SHIFT_MASK|GDK_CONTROL_MASK)) == GDK_SHIFT_MASK) {
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return TRUE;
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}
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if (ev->state & (GDK_CONTROL_MASK|GDK_SHIFT_MASK) == (GDK_CONTROL_MASK|GDK_SHIFT_MASK)) {
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scale = 0.01;
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} else if (ev->state & GDK_CONTROL_MASK) {
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scale = 0.1;
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} else {
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scale = 1.0;
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}
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return mouse_control (ev->x, ev->window, scale);
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}
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gint
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BarController::mouse_control (double x, GdkWindow* window, double scaling)
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{
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double fract;
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double delta;
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if (window != grab_window) {
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grab_x = x;
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grab_window = window;
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return TRUE;
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}
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delta = x - grab_x;
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grab_x = x;
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switch (_style) {
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case Line:
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case LeftToRight:
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fract = scaling * (delta / (darea.get_width() - 2));
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fract = min (1.0, fract);
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fract = max (-1.0, fract);
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adjustment.set_value (adjustment.get_value() + fract * (adjustment.get_upper() - adjustment.get_lower()));
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break;
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default:
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fract = 0.0;
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}
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return TRUE;
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}
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bool
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BarController::expose (GdkEventExpose* event)
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{
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Glib::RefPtr<Gdk::Window> win (darea.get_window());
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Widget* parent;
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gint x1, x2, y1, y2;
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gint w, h;
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double fract;
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w = darea.get_width() - 2;
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h = darea.get_height() - 2;
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fract = ((adjustment.get_value() - adjustment.get_lower()) /
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(adjustment.get_upper() - adjustment.get_lower()));
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switch (_style) {
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case Line:
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x1 = (gint) floor (w * fract);
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x2 = x1;
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y1 = 0;
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y2 = h - 1;
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if (use_parent) {
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parent = get_parent();
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if (parent) {
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win->draw_rectangle (parent->get_style()->get_fg_gc (parent->get_state()),
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true,
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0, 0, darea.get_width(), darea.get_height());
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}
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} else {
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win->draw_rectangle (get_style()->get_bg_gc (get_state()),
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true,
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0, 0, darea.get_width(), darea.get_height());
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}
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if (fract == 0.0) {
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win->draw_rectangle (get_style()->get_fg_gc (get_state()),
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true, x1, 1, 2, darea.get_height() - 2);
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} else {
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win->draw_rectangle (get_style()->get_fg_gc (get_state()),
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true, x1 - 1, 1, 3, darea.get_height() - 2);
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}
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break;
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case CenterOut:
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break;
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case LeftToRight:
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x1 = 0;
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x2 = (gint) floor (w * fract);
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y1 = 0;
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y2 = h - 1;
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win->draw_rectangle (get_style()->get_bg_gc (get_state()),
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false,
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0, 0, darea.get_width() - 1, darea.get_height() - 1);
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/* draw active box */
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win->draw_rectangle (get_style()->get_fg_gc (get_state()),
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true,
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1 + x1,
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1 + y1,
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x2,
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1 + y2);
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/* draw inactive box */
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win->draw_rectangle (get_style()->get_fg_gc (STATE_INSENSITIVE),
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true,
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1 + x2,
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1 + y1,
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w - x2,
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1 + y2);
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break;
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case RightToLeft:
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break;
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case TopToBottom:
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break;
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case BottomToTop:
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break;
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}
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if (with_text) {
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/* draw label */
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char buf[64];
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buf[0] = '\0';
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label_callback (buf, 64);
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if (buf[0] != '\0') {
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layout->set_text (buf);
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int width, height;
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layout->get_pixel_size (width, height);
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int xpos;
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xpos = max (3, 1 + (x2 - (width/2)));
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xpos = min (darea.get_width() - width - 3, xpos);
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win->draw_layout (get_style()->get_text_gc (get_state()),
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xpos,
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(darea.get_height()/2) - (height/2),
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layout);
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}
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}
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return true;
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}
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void
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BarController::set_with_text (bool yn)
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{
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if (with_text != yn) {
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with_text = yn;
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queue_draw ();
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}
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}
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void
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BarController::midicontrol_set_tip ()
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{
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if (midi_control) {
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// Gtkmm2ext::UI::instance()->set_tip (&darea, midi_control->control_description());
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}
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}
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void
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BarController::midi_learn()
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{
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if (midi_control) {
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prompting = true;
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midi_control->learn_about_external_control ();
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}
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}
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void
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BarController::midicontrol_prompt ()
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{
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if (prompting) {
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string prompt = _("operate MIDI controller now");
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prompter.set_text (prompt);
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Gtkmm2ext::UI::instance()->touch_display (&prompter);
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unprompting = true;
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prompting = false;
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}
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}
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void
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BarController::midicontrol_unprompt ()
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{
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if (unprompting) {
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Gtkmm2ext::UI::instance()->touch_display (&prompter);
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unprompting = false;
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}
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}
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gint
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BarController::prompter_hiding (GdkEventAny *ev)
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{
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if (unprompting) {
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if (midi_control) {
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midi_control->stop_learning();
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}
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unprompting = false;
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}
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return FALSE;
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}
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void
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BarController::set_style (Style s)
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{
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_style = s;
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darea.queue_draw ();
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}
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gint
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BarController::switch_to_bar ()
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{
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if (switching) {
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return FALSE;
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}
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switching = true;
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if (get_child() == &darea) {
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return FALSE;
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}
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remove ();
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add (darea);
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darea.show ();
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switching = false;
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return FALSE;
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}
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gint
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BarController::switch_to_spinner ()
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{
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if (switching) {
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return FALSE;
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}
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switching = true;
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if (get_child() == &spinner) {
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return FALSE;
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}
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remove ();
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add (spinner);
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spinner.show ();
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spinner.grab_focus ();
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switching = false;
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return FALSE;
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}
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void
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BarController::entry_activated ()
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{
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string text = spinner.get_text ();
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float val;
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if (sscanf (text.c_str(), "%f", &val) == 1) {
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adjustment.set_value (val);
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}
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switch_to_bar ();
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}
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bool
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BarController::entry_focus_out (GdkEventFocus* ev)
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{
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entry_activated ();
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return true;
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}
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void
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BarController::set_use_parent (bool yn)
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{
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use_parent = yn;
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queue_draw ();
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}
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