git-svn-id: svn://localhost/ardour2/branches/3.0@12148 d708f5d6-7413-0410-9779-e7cbd77b26cf
669 lines
16 KiB
C++
669 lines
16 KiB
C++
/*
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Copyright (C) 2011 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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*/
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#include <algorithm>
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#include <cairo/cairo.h>
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#include "ardour/ardour.h"
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#include "ardour/audioengine.h"
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#include "ardour/rc_configuration.h"
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#include "ardour/session.h"
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#include "gtkmm2ext/keyboard.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "ardour_ui.h"
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#include "rgb_macros.h"
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#include "shuttle_control.h"
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#include "i18n.h"
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using namespace Gtk;
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using namespace Gtkmm2ext;
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using namespace ARDOUR;
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using std::min;
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using std::max;
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gboolean qt (gboolean, gint, gint, gboolean, Gtk::Tooltip*, gpointer)
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{
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return FALSE;
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}
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ShuttleControl::ShuttleControl ()
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: _controllable (new ShuttleControllable (*this))
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, binding_proxy (_controllable)
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{
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ARDOUR_UI::instance()->set_tip (*this, _("Shuttle speed control (Context-click for options)"));
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pattern = 0;
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last_shuttle_request = 0;
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last_speed_displayed = -99999999;
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shuttle_grabbed = false;
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shuttle_speed_on_grab = 0;
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shuttle_fract = 0.0;
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shuttle_max_speed = 8.0f;
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shuttle_style_menu = 0;
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shuttle_unit_menu = 0;
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shuttle_context_menu = 0;
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set_flags (CAN_FOCUS);
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add_events (Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK);
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set_size_request (100, 15);
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set_name (X_("ShuttleControl"));
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Config->ParameterChanged.connect (parameter_connection, MISSING_INVALIDATOR, boost::bind (&ShuttleControl::parameter_changed, this, _1), gui_context());
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/* gtkmm 2.4: the C++ wrapper doesn't work */
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g_signal_connect ((GObject*) gobj(), "query-tooltip", G_CALLBACK (qt), NULL);
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// signal_query_tooltip().connect (sigc::mem_fun (*this, &ShuttleControl::on_query_tooltip));
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}
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ShuttleControl::~ShuttleControl ()
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{
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cairo_pattern_destroy (pattern);
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}
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void
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ShuttleControl::set_session (Session *s)
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{
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SessionHandlePtr::set_session (s);
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if (_session) {
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set_sensitive (true);
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_session->add_controllable (_controllable);
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} else {
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set_sensitive (false);
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}
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}
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void
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ShuttleControl::on_size_allocate (Gtk::Allocation& alloc)
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{
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if (pattern) {
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cairo_pattern_destroy (pattern);
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pattern = 0;
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}
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pattern = cairo_pattern_create_linear (0, 0, alloc.get_width(), alloc.get_height());
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/* add 3 color stops */
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uint32_t col = ARDOUR_UI::config()->canvasvar_Shuttle.get();
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int r,b,g,a;
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UINT_TO_RGBA(col, &r, &g, &b, &a);
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cairo_pattern_add_color_stop_rgb (pattern, 0.0, 0, 0, 0);
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cairo_pattern_add_color_stop_rgb (pattern, 0.5, r/255.0, g/255.0, b/255.0);
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cairo_pattern_add_color_stop_rgb (pattern, 1.0, 0, 0, 0);
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DrawingArea::on_size_allocate (alloc);
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}
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void
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ShuttleControl::map_transport_state ()
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{
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float speed = _session->transport_speed ();
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if (fabs(speed) <= (2*DBL_EPSILON)) {
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shuttle_fract = 0;
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} else {
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if (Config->get_shuttle_units() == Semitones) {
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bool reverse;
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int semi = speed_as_semitones (speed, reverse);
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shuttle_fract = semitones_as_fract (semi, reverse);
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} else {
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shuttle_fract = speed/shuttle_max_speed;
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}
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}
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queue_draw ();
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}
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void
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ShuttleControl::build_shuttle_context_menu ()
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{
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using namespace Menu_Helpers;
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shuttle_context_menu = new Menu();
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MenuList& items = shuttle_context_menu->items();
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Menu* speed_menu = manage (new Menu());
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MenuList& speed_items = speed_menu->items();
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Menu* units_menu = manage (new Menu);
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MenuList& units_items = units_menu->items();
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RadioMenuItem::Group units_group;
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units_items.push_back (RadioMenuElem (units_group, _("Percent"), sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_units), Percentage)));
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if (Config->get_shuttle_units() == Percentage) {
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static_cast<RadioMenuItem*>(&units_items.back())->set_active();
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}
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units_items.push_back (RadioMenuElem (units_group, _("Semitones"), sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_units), Semitones)));
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if (Config->get_shuttle_units() == Semitones) {
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static_cast<RadioMenuItem*>(&units_items.back())->set_active();
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}
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items.push_back (MenuElem (_("Units"), *units_menu));
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Menu* style_menu = manage (new Menu);
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MenuList& style_items = style_menu->items();
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RadioMenuItem::Group style_group;
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style_items.push_back (RadioMenuElem (style_group, _("Sprung"), sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_style), Sprung)));
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if (Config->get_shuttle_behaviour() == Sprung) {
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static_cast<RadioMenuItem*>(&style_items.back())->set_active();
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}
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style_items.push_back (RadioMenuElem (style_group, _("Wheel"), sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_style), Wheel)));
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if (Config->get_shuttle_behaviour() == Wheel) {
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static_cast<RadioMenuItem*>(&style_items.back())->set_active();
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}
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items.push_back (MenuElem (_("Mode"), *style_menu));
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RadioMenuItem::Group speed_group;
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speed_items.push_back (RadioMenuElem (speed_group, "8", sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_max_speed), 8.0f)));
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if (shuttle_max_speed == 8.0) {
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static_cast<RadioMenuItem*>(&speed_items.back())->set_active ();
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}
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speed_items.push_back (RadioMenuElem (speed_group, "6", sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_max_speed), 6.0f)));
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if (shuttle_max_speed == 6.0) {
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static_cast<RadioMenuItem*>(&speed_items.back())->set_active ();
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}
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speed_items.push_back (RadioMenuElem (speed_group, "4", sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_max_speed), 4.0f)));
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if (shuttle_max_speed == 4.0) {
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static_cast<RadioMenuItem*>(&speed_items.back())->set_active ();
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}
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speed_items.push_back (RadioMenuElem (speed_group, "3", sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_max_speed), 3.0f)));
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if (shuttle_max_speed == 3.0) {
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static_cast<RadioMenuItem*>(&speed_items.back())->set_active ();
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}
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speed_items.push_back (RadioMenuElem (speed_group, "2", sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_max_speed), 2.0f)));
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if (shuttle_max_speed == 2.0) {
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static_cast<RadioMenuItem*>(&speed_items.back())->set_active ();
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}
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speed_items.push_back (RadioMenuElem (speed_group, "1.5", sigc::bind (sigc::mem_fun (*this, &ShuttleControl::set_shuttle_max_speed), 1.5f)));
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if (shuttle_max_speed == 1.5) {
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static_cast<RadioMenuItem*>(&speed_items.back())->set_active ();
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}
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items.push_back (MenuElem (_("Maximum speed"), *speed_menu));
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}
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void
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ShuttleControl::show_shuttle_context_menu ()
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{
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if (shuttle_context_menu == 0) {
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build_shuttle_context_menu ();
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}
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shuttle_context_menu->popup (1, gtk_get_current_event_time());
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}
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void
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ShuttleControl::set_shuttle_max_speed (float speed)
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{
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shuttle_max_speed = speed;
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}
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bool
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ShuttleControl::on_button_press_event (GdkEventButton* ev)
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{
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if (!_session) {
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return true;
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}
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if (binding_proxy.button_press_handler (ev)) {
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return true;
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}
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if (Keyboard::is_context_menu_event (ev)) {
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show_shuttle_context_menu ();
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return true;
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}
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switch (ev->button) {
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case 1:
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add_modal_grab ();
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shuttle_grabbed = true;
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shuttle_speed_on_grab = _session->transport_speed ();
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mouse_shuttle (ev->x, true);
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break;
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case 2:
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case 3:
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return true;
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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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ShuttleControl::on_button_release_event (GdkEventButton* ev)
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{
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if (!_session) {
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return true;
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}
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switch (ev->button) {
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case 1:
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shuttle_grabbed = false;
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remove_modal_grab ();
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if (Config->get_shuttle_behaviour() == Sprung) {
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_session->request_transport_speed (shuttle_speed_on_grab);
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} else {
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mouse_shuttle (ev->x, true);
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}
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return true;
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case 2:
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if (_session->transport_rolling()) {
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_session->request_transport_speed (1.0);
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}
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return true;
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case 3:
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default:
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return true;
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}
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return true;
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}
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bool
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ShuttleControl::on_query_tooltip (int, int, bool, const Glib::RefPtr<Gtk::Tooltip>&)
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{
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return false;
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}
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bool
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ShuttleControl::on_scroll_event (GdkEventScroll* ev)
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{
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if (!_session || Config->get_shuttle_behaviour() != Wheel) {
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return true;
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}
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bool semis = (Config->get_shuttle_units() == Semitones);
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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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if (semis) {
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if (shuttle_fract == 0) {
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shuttle_fract = semitones_as_fract (1, false);
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} else {
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bool rev;
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int st = fract_as_semitones (shuttle_fract, rev);
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shuttle_fract = semitones_as_fract (st + 1, rev);
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}
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} else {
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shuttle_fract += 0.00125;
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}
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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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if (semis) {
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if (shuttle_fract == 0) {
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shuttle_fract = semitones_as_fract (1, true);
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} else {
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bool rev;
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int st = fract_as_semitones (shuttle_fract, rev);
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shuttle_fract = semitones_as_fract (st - 1, rev);
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}
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} else {
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shuttle_fract -= 0.00125;
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}
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break;
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default:
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return false;
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}
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if (semis) {
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float lower_side_of_dead_zone = semitones_as_fract (-24, true);
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float upper_side_of_dead_zone = semitones_as_fract (-24, false);
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/* if we entered the "dead zone" (-24 semitones in forward or reverse), jump
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to the far side of it.
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*/
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if (shuttle_fract > lower_side_of_dead_zone && shuttle_fract < upper_side_of_dead_zone) {
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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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shuttle_fract = upper_side_of_dead_zone;
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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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shuttle_fract = lower_side_of_dead_zone;
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break;
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default:
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/* impossible, checked above */
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return false;
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}
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}
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}
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use_shuttle_fract (true);
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return true;
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}
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bool
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ShuttleControl::on_motion_notify_event (GdkEventMotion* ev)
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{
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if (!_session || !shuttle_grabbed) {
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return true;
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}
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return mouse_shuttle (ev->x, false);
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}
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gint
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ShuttleControl::mouse_shuttle (double x, bool force)
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{
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double const center = get_width() / 2.0;
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double distance_from_center = x - center;
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if (distance_from_center > 0) {
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distance_from_center = min (distance_from_center, center);
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} else {
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distance_from_center = max (distance_from_center, -center);
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}
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/* compute shuttle fract as expressing how far between the center
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and the edge we are. positive values indicate we are right of
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center, negative values indicate left of center
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*/
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shuttle_fract = distance_from_center / center; // center == half the width
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use_shuttle_fract (force);
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return true;
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}
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void
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ShuttleControl::set_shuttle_fract (double f)
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{
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shuttle_fract = f;
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use_shuttle_fract (false);
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}
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int
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ShuttleControl::speed_as_semitones (float speed, bool& reverse)
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{
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assert (speed != 0.0);
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if (speed < 0.0) {
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reverse = true;
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return (int) round (12.0 * fast_log2 (-speed));
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} else {
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reverse = false;
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return (int) round (12.0 * fast_log2 (speed));
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}
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}
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float
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ShuttleControl::semitones_as_speed (int semi, bool reverse)
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{
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if (reverse) {
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return -pow (2.0, (semi / 12.0));
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} else {
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return pow (2.0, (semi / 12.0));
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}
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}
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float
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ShuttleControl::semitones_as_fract (int semi, bool reverse)
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{
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float speed = semitones_as_speed (semi, reverse);
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return speed/4.0; /* 4.0 is the maximum speed for a 24 semitone shift */
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}
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int
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ShuttleControl::fract_as_semitones (float fract, bool& reverse)
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{
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assert (fract != 0.0);
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return speed_as_semitones (fract * 4.0, reverse);
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}
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void
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ShuttleControl::use_shuttle_fract (bool force)
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{
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microseconds_t now = get_microseconds();
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shuttle_fract = max (-1.0f, shuttle_fract);
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shuttle_fract = min (1.0f, shuttle_fract);
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/* do not attempt to submit a motion-driven transport speed request
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more than once per process cycle.
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*/
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if (!force && (last_shuttle_request - now) < (microseconds_t) AudioEngine::instance()->usecs_per_cycle()) {
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return;
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}
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last_shuttle_request = now;
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double speed = 0;
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if (Config->get_shuttle_units() == Semitones) {
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if (shuttle_fract != 0.0) {
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bool reverse;
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int semi = fract_as_semitones (shuttle_fract, reverse);
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speed = semitones_as_speed (semi, reverse);
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} else {
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speed = 0.0;
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}
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} else {
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speed = shuttle_max_speed * shuttle_fract;
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}
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_session->request_transport_speed_nonzero (speed);
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}
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bool
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ShuttleControl::on_expose_event (GdkEventExpose*)
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{
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cairo_text_extents_t extents;
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Glib::RefPtr<Gdk::Window> win (get_window());
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Glib::RefPtr<Gtk::Style> style (get_style());
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cairo_t* cr = gdk_cairo_create (win->gobj());
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cairo_set_source (cr, pattern);
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cairo_rectangle (cr, 0.0, 0.0, get_width(), get_height());
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cairo_fill_preserve (cr);
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cairo_set_source_rgb (cr, 0, 0, 0.0);
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cairo_stroke (cr);
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float speed = 0.0;
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if (_session) {
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speed = _session->transport_speed ();
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}
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/* Marker */
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double visual_fraction = std::min (1.0f, speed/shuttle_max_speed);
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double x = (get_width() / 2.0) + (0.5 * (get_width() * visual_fraction));
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cairo_move_to (cr, x, 1);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_line_to (cr, x, get_height()-1);
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cairo_stroke (cr);
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|
|
|
/* speed text */
|
|
|
|
char buf[32];
|
|
|
|
if (speed != 0) {
|
|
|
|
if (Config->get_shuttle_units() == Percentage) {
|
|
|
|
if (speed == 1.0) {
|
|
snprintf (buf, sizeof (buf), "%s", _("Playing"));
|
|
} else {
|
|
if (speed < 0.0) {
|
|
snprintf (buf, sizeof (buf), "<<< %d%%", (int) round (-speed * 100));
|
|
} else {
|
|
snprintf (buf, sizeof (buf), ">>> %d%%", (int) round (speed * 100));
|
|
}
|
|
}
|
|
|
|
} else {
|
|
|
|
bool reversed;
|
|
int semi = speed_as_semitones (speed, reversed);
|
|
|
|
if (reversed) {
|
|
snprintf (buf, sizeof (buf), _("<<< %+d semitones"), semi);
|
|
} else {
|
|
snprintf (buf, sizeof (buf), _(">>> %+d semitones"), semi);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
snprintf (buf, sizeof (buf), "%s", _("Stopped"));
|
|
}
|
|
|
|
last_speed_displayed = speed;
|
|
|
|
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
|
|
cairo_text_extents (cr, buf, &extents);
|
|
cairo_move_to (cr, 10, extents.height + 2);
|
|
cairo_show_text (cr, buf);
|
|
|
|
/* style text */
|
|
|
|
|
|
switch (Config->get_shuttle_behaviour()) {
|
|
case Sprung:
|
|
snprintf (buf, sizeof (buf), "%s", _("Sprung"));
|
|
break;
|
|
case Wheel:
|
|
snprintf (buf, sizeof (buf), "%s", _("Wheel"));
|
|
break;
|
|
}
|
|
|
|
cairo_text_extents (cr, buf, &extents);
|
|
|
|
cairo_move_to (cr, get_width() - (fabs(extents.x_advance) + 5), extents.height + 2);
|
|
cairo_show_text (cr, buf);
|
|
|
|
cairo_destroy (cr);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
ShuttleControl::shuttle_unit_clicked ()
|
|
{
|
|
if (shuttle_unit_menu == 0) {
|
|
shuttle_unit_menu = dynamic_cast<Menu*> (ActionManager::get_widget ("/ShuttleUnitPopup"));
|
|
}
|
|
shuttle_unit_menu->popup (1, gtk_get_current_event_time());
|
|
}
|
|
|
|
void
|
|
ShuttleControl::set_shuttle_style (ShuttleBehaviour s)
|
|
{
|
|
Config->set_shuttle_behaviour (s);
|
|
}
|
|
|
|
void
|
|
ShuttleControl::set_shuttle_units (ShuttleUnits s)
|
|
{
|
|
Config->set_shuttle_units (s);
|
|
}
|
|
|
|
void
|
|
ShuttleControl::update_speed_display ()
|
|
{
|
|
if (_session->transport_speed() != last_speed_displayed) {
|
|
queue_draw ();
|
|
}
|
|
}
|
|
|
|
ShuttleControl::ShuttleControllable::ShuttleControllable (ShuttleControl& s)
|
|
: PBD::Controllable (X_("Shuttle"))
|
|
, sc (s)
|
|
{
|
|
}
|
|
|
|
void
|
|
ShuttleControl::ShuttleControllable::set_value (double val)
|
|
{
|
|
double fract;
|
|
|
|
if (val == 0.5) {
|
|
fract = 0.0;
|
|
} else {
|
|
if (val < 0.5) {
|
|
fract = -((0.5 - val)/0.5);
|
|
} else {
|
|
fract = ((val - 0.5)/0.5);
|
|
}
|
|
}
|
|
|
|
sc.set_shuttle_fract (fract);
|
|
}
|
|
|
|
double
|
|
ShuttleControl::ShuttleControllable::get_value () const
|
|
{
|
|
return sc.get_shuttle_fract ();
|
|
}
|
|
|
|
void
|
|
ShuttleControl::parameter_changed (std::string p)
|
|
{
|
|
if (p == "shuttle-behaviour") {
|
|
switch (Config->get_shuttle_behaviour ()) {
|
|
case Sprung:
|
|
/* back to Sprung - reset to speed = 1.0 if playing
|
|
*/
|
|
if (_session) {
|
|
if (_session->transport_rolling()) {
|
|
if (_session->transport_speed() == 1.0) {
|
|
queue_draw ();
|
|
} else {
|
|
_session->request_transport_speed (1.0);
|
|
/* redraw when speed changes */
|
|
}
|
|
} else {
|
|
queue_draw ();
|
|
}
|
|
}
|
|
break;
|
|
|
|
case Wheel:
|
|
queue_draw ();
|
|
break;
|
|
}
|
|
|
|
} else if (p == "shuttle-units") {
|
|
queue_draw ();
|
|
}
|
|
}
|