Clean up region.h and trim include tree.
[ardour2.git] / gtk2_ardour / gain_meter.cc
blob315608d070b23ffbe37d1676339f3e68de5e35d9
1 /*
2 Copyright (C) 2002 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <limits.h>
22 #include "ardour/amp.h"
23 #include "ardour/io.h"
24 #include "ardour/route.h"
25 #include "ardour/route_group.h"
26 #include "ardour/session.h"
27 #include "ardour/session_route.h"
28 #include "ardour/dB.h"
29 #include "ardour/utils.h"
31 #include <gtkmm/style.h>
32 #include <gdkmm/color.h>
33 #include <gtkmm2ext/utils.h>
34 #include <gtkmm2ext/fastmeter.h>
35 #include <gtkmm2ext/barcontroller.h>
36 #include <gtkmm2ext/gtk_ui.h>
37 #include "midi++/manager.h"
38 #include "pbd/fastlog.h"
39 #include "pbd/stacktrace.h"
41 #include "ardour_ui.h"
42 #include "gain_meter.h"
43 #include "global_signals.h"
44 #include "logmeter.h"
45 #include "gui_thread.h"
46 #include "keyboard.h"
47 #include "public_editor.h"
48 #include "utils.h"
50 #include "ardour/session.h"
51 #include "ardour/route.h"
52 #include "ardour/meter.h"
54 #include "i18n.h"
56 using namespace ARDOUR;
57 using namespace PBD;
58 using namespace Gtkmm2ext;
59 using namespace Gtk;
60 using namespace std;
61 using Gtkmm2ext::Keyboard;
63 sigc::signal<void> GainMeterBase::ResetAllPeakDisplays;
64 sigc::signal<void,RouteGroup*> GainMeterBase::ResetGroupPeakDisplays;
66 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
67 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
70 void
71 GainMeter::setup_slider_pix ()
73 if ((slider = ::get_icon ("fader_belt")) == 0) {
74 throw failed_constructor();
78 GainMeterBase::GainMeterBase (Session* s,
79 const Glib::RefPtr<Gdk::Pixbuf>& pix,
80 bool horizontal,
81 int fader_length)
82 : gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1) // 0.781787 is the value needed for gain to be set to 0.
83 , gain_automation_style_button ("")
84 , gain_automation_state_button ("")
85 , style_changed (false)
86 , dpi_changed (false)
87 , _is_midi (false)
90 using namespace Menu_Helpers;
92 set_session (s);
94 ignore_toggle = false;
95 meter_menu = 0;
96 next_release_selects = false;
97 _width = Wide;
99 if (horizontal) {
100 gain_slider = manage (new HSliderController (pix,
101 &gain_adjustment,
102 fader_length,
103 false));
104 } else {
105 gain_slider = manage (new VSliderController (pix,
106 &gain_adjustment,
107 fader_length,
108 false));
111 level_meter = new LevelMeter(_session);
113 gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::start_gain_touch));
114 gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::end_gain_touch));
115 gain_slider->set_name ("GainFader");
117 gain_display.set_name ("MixerStripGainDisplay");
118 gain_display.set_has_frame (false);
119 set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
120 gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
121 gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
122 gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
124 peak_display.set_name ("MixerStripPeakDisplay");
125 // peak_display.set_has_frame (false);
126 // peak_display.set_editable (false);
127 set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
128 max_peak = minus_infinity();
129 peak_display.set_label (_("-inf"));
130 peak_display.unset_flags (Gtk::CAN_FOCUS);
132 gain_automation_style_button.set_name ("MixerAutomationModeButton");
133 gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
135 ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
136 ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
138 gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
139 gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
141 gain_automation_state_button.set_size_request(15, 15);
142 gain_automation_style_button.set_size_request(15, 15);
144 gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
145 gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
147 gain_astate_menu.set_name ("ArdourContextMenu");
148 gain_astyle_menu.set_name ("ArdourContextMenu");
150 gain_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
151 peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
152 gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
154 ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
155 ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
157 UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
158 ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
159 DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
162 GainMeterBase::~GainMeterBase ()
164 delete meter_menu;
165 delete level_meter;
168 void
169 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
170 boost::shared_ptr<PeakMeter> pm,
171 boost::shared_ptr<Amp> amp)
173 connections.clear ();
174 model_connections.drop_connections ();
176 if (!pm && !amp) {
177 level_meter->set_meter (0);
178 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
179 _meter.reset ();
180 _amp.reset ();
181 _route.reset ();
182 return;
185 _meter = pm;
186 _amp = amp;
187 _route = r;
189 level_meter->set_meter (pm.get());
190 gain_slider->set_controllable (amp->gain_control());
192 if (!_route || _route->output()->n_ports().n_midi() == 0) {
193 _is_midi = false;
194 gain_adjustment.set_lower (0.0);
195 gain_adjustment.set_upper (1.0);
196 gain_adjustment.set_step_increment (0.01);
197 gain_adjustment.set_page_increment (0.1);
198 } else {
199 _is_midi = true;
200 gain_adjustment.set_lower (0.0);
201 gain_adjustment.set_upper (2.0);
202 gain_adjustment.set_step_increment (0.05);
203 gain_adjustment.set_page_increment (0.1);
206 if (!_route || !_route->is_hidden()) {
208 using namespace Menu_Helpers;
210 gain_astate_menu.items().clear ();
212 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
213 sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
214 Evoral::Parameter(GainAutomation), (AutoState) Off)));
215 gain_astate_menu.items().push_back (MenuElem (_("Play"),
216 sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
217 Evoral::Parameter(GainAutomation), (AutoState) Play)));
218 gain_astate_menu.items().push_back (MenuElem (_("Write"),
219 sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
220 Evoral::Parameter(GainAutomation), (AutoState) Write)));
221 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
222 sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
223 Evoral::Parameter(GainAutomation), (AutoState) Touch)));
225 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
226 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
228 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
230 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
231 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
233 gain_automation_state_changed ();
236 amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
238 gain_changed ();
239 show_gain ();
240 update_gain_sensitive ();
243 void
244 GainMeterBase::hide_all_meters ()
246 level_meter->hide_meters();
249 void
250 GainMeter::hide_all_meters ()
252 bool remove_metric_area = false;
254 GainMeterBase::hide_all_meters ();
256 if (remove_metric_area) {
257 if (meter_metric_area.get_parent()) {
258 level_meter->remove (meter_metric_area);
263 void
264 GainMeterBase::setup_meters (int len)
266 level_meter->setup_meters(len, 5);
269 void
270 GainMeter::setup_meters (int len)
272 if (!meter_metric_area.get_parent()) {
273 level_meter->pack_end (meter_metric_area, false, false);
274 meter_metric_area.show_all ();
276 GainMeterBase::setup_meters (len);
279 bool
280 GainMeterBase::gain_key_press (GdkEventKey* ev)
282 if (key_is_legal_for_numeric_entry (ev->keyval)) {
283 /* drop through to normal handling */
284 return false;
286 /* illegal key for gain entry */
287 return true;
290 bool
291 GainMeterBase::peak_button_release (GdkEventButton* ev)
293 /* reset peak label */
295 if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
296 ResetAllPeakDisplays ();
297 } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
298 if (_route) {
299 ResetGroupPeakDisplays (_route->route_group());
301 } else {
302 reset_peak_display ();
305 return true;
308 void
309 GainMeterBase::reset_peak_display ()
311 _meter->reset_max();
312 level_meter->clear_meters();
313 max_peak = -INFINITY;
314 peak_display.set_label (_("-Inf"));
315 peak_display.set_name ("MixerStripPeakDisplay");
318 void
319 GainMeterBase::reset_group_peak_display (RouteGroup* group)
321 if (_route && group == _route->route_group()) {
322 reset_peak_display ();
326 void
327 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
329 using namespace Menu_Helpers;
331 if (meter_menu == 0) {
332 meter_menu = new Gtk::Menu;
333 MenuList& items = meter_menu->items();
335 items.push_back (MenuElem ("-inf .. +0dBFS"));
336 items.push_back (MenuElem ("-10dB .. +0dBFS"));
337 items.push_back (MenuElem ("-4 .. +0dBFS"));
338 items.push_back (SeparatorElem());
339 items.push_back (MenuElem ("-inf .. -2dBFS"));
340 items.push_back (MenuElem ("-10dB .. -2dBFS"));
341 items.push_back (MenuElem ("-4 .. -2dBFS"));
344 meter_menu->popup (1, ev->time);
347 bool
348 GainMeterBase::gain_focused (GdkEventFocus* ev)
350 if (ev->in) {
351 gain_display.select_region (0, -1);
352 } else {
353 gain_display.select_region (0, 0);
355 return false;
358 void
359 GainMeterBase::gain_activated ()
361 float f;
363 if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
365 /* clamp to displayable values */
367 f = min (f, 6.0f);
369 _amp->set_gain (dB_to_coefficient(f), this);
371 if (gain_display.has_focus()) {
372 PublicEditor::instance().reset_focus();
377 void
378 GainMeterBase::show_gain ()
380 char buf[32];
382 float v = gain_adjustment.get_value();
384 if (!_is_midi) {
385 if (v == 0.0) {
386 strcpy (buf, _("-inf"));
387 } else {
388 snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain (v)));
390 } else {
391 snprintf (buf, sizeof (buf), "%.1f", v);
394 gain_display.set_text (buf);
397 void
398 GainMeterBase::gain_adjusted ()
400 if (!ignore_toggle) {
401 if (_route) {
402 if (_route->amp() == _amp) {
403 if (_is_midi) {
404 _route->set_gain (gain_adjustment.get_value(), this);
405 } else {
406 _route->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
408 } else {
409 _amp->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
414 show_gain ();
417 void
418 GainMeterBase::effective_gain_display ()
420 gfloat value;
422 if (!_route || _route->output()->n_ports().n_midi() == 0) {
423 value = gain_to_slider_position (_amp->gain());
424 } else {
425 value = _amp->gain ();
428 //cerr << this << " for " << _io->name() << " EGAIN = " << value
429 // << " AGAIN = " << gain_adjustment.get_value () << endl;
430 // stacktrace (cerr, 20);
432 if (gain_adjustment.get_value() != value) {
433 ignore_toggle = true;
434 gain_adjustment.set_value (value);
435 ignore_toggle = false;
439 void
440 GainMeterBase::gain_changed ()
442 Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
445 void
446 GainMeterBase::set_meter_strip_name (const char * name)
448 meter_metric_area.set_name (name);
451 void
452 GainMeterBase::set_fader_name (const char * name)
454 gain_slider->set_name (name);
457 void
458 GainMeterBase::update_gain_sensitive ()
460 bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
461 static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
464 static MeterPoint
465 next_meter_point (MeterPoint mp)
467 switch (mp) {
468 case MeterInput:
469 return MeterPreFader;
470 break;
472 case MeterPreFader:
473 return MeterPostFader;
474 break;
476 case MeterPostFader:
477 return MeterCustom;
478 break;
480 case MeterCustom:
481 return MeterInput;
482 break;
485 /*NOTREACHED*/
486 return MeterInput;
489 gint
490 GainMeterBase::meter_press(GdkEventButton* ev)
492 wait_for_release = false;
494 if (!_route) {
495 return FALSE;
498 if (!ignore_toggle) {
500 if (Keyboard::is_context_menu_event (ev)) {
502 // no menu at this time.
504 } else {
506 if (Keyboard::is_button2_event(ev)) {
508 // Primary-button2 click is the midi binding click
509 // button2-click is "momentary"
511 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
512 wait_for_release = true;
513 old_meter_point = _route->meter_point ();
517 if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
519 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
521 /* Primary+Tertiary-click applies change to all routes */
523 _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
526 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
528 /* Primary-click: solo mix group.
529 NOTE: Primary-button2 is MIDI learn.
532 if (ev->button == 1) {
533 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
536 } else {
538 /* click: change just this route */
540 // XXX no undo yet
542 _route->set_meter_point (next_meter_point (_route->meter_point()));
548 return true;
552 gint
553 GainMeterBase::meter_release(GdkEventButton*)
555 if(!ignore_toggle){
556 if (wait_for_release){
557 wait_for_release = false;
559 if (_route) {
560 set_meter_point (*_route, old_meter_point);
565 return true;
568 void
569 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
571 route.set_meter_point (mp);
574 void
575 GainMeterBase::set_mix_group_meter_point (Route& route, MeterPoint mp)
577 RouteGroup* mix_group;
579 if((mix_group = route.route_group()) != 0){
580 mix_group->apply (&Route::set_meter_point, mp);
581 } else {
582 route.set_meter_point (mp);
586 void
587 GainMeterBase::meter_point_clicked ()
589 if (_route) {
590 /* WHAT? */
594 gint
595 GainMeterBase::start_gain_touch (GdkEventButton*)
597 _amp->gain_control()->start_touch (_amp->session().transport_frame());
598 return FALSE;
601 gint
602 GainMeterBase::end_gain_touch (GdkEventButton*)
604 _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
605 return FALSE;
608 gint
609 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
611 if (ev->type == GDK_BUTTON_RELEASE) {
612 return TRUE;
615 switch (ev->button) {
616 case 1:
617 gain_astate_menu.popup (1, ev->time);
618 break;
619 default:
620 break;
623 return TRUE;
626 gint
627 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
629 if (ev->type == GDK_BUTTON_RELEASE) {
630 return TRUE;
633 switch (ev->button) {
634 case 1:
635 gain_astyle_menu.popup (1, ev->time);
636 break;
637 default:
638 break;
640 return TRUE;
643 string
644 GainMeterBase::astate_string (AutoState state)
646 return _astate_string (state, false);
649 string
650 GainMeterBase::short_astate_string (AutoState state)
652 return _astate_string (state, true);
655 string
656 GainMeterBase::_astate_string (AutoState state, bool shrt)
658 string sstr;
660 switch (state) {
661 case Off:
662 sstr = (shrt ? "M" : _("M"));
663 break;
664 case Play:
665 sstr = (shrt ? "P" : _("P"));
666 break;
667 case Touch:
668 sstr = (shrt ? "T" : _("T"));
669 break;
670 case Write:
671 sstr = (shrt ? "W" : _("W"));
672 break;
675 return sstr;
678 string
679 GainMeterBase::astyle_string (AutoStyle style)
681 return _astyle_string (style, false);
684 string
685 GainMeterBase::short_astyle_string (AutoStyle style)
687 return _astyle_string (style, true);
690 string
691 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
693 if (style & Trim) {
694 return _("Trim");
695 } else {
696 /* XXX it might different in different languages */
698 return (shrt ? _("Abs") : _("Abs"));
702 void
703 GainMeterBase::gain_automation_style_changed ()
705 switch (_width) {
706 case Wide:
707 gain_automation_style_button.set_label (astyle_string(_amp->gain_control()->alist()->automation_style()));
708 break;
709 case Narrow:
710 gain_automation_style_button.set_label (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
711 break;
715 void
716 GainMeterBase::gain_automation_state_changed ()
718 ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
720 bool x;
722 switch (_width) {
723 case Wide:
724 gain_automation_state_button.set_label (astate_string(_amp->gain_control()->alist()->automation_state()));
725 break;
726 case Narrow:
727 gain_automation_state_button.set_label (short_astate_string(_amp->gain_control()->alist()->automation_state()));
728 break;
731 x = (_amp->gain_control()->alist()->automation_state() != Off);
733 if (gain_automation_state_button.get_active() != x) {
734 ignore_toggle = true;
735 gain_automation_state_button.set_active (x);
736 ignore_toggle = false;
739 update_gain_sensitive ();
741 /* start watching automation so that things move */
743 gain_watching.disconnect();
745 if (x) {
746 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
750 void
751 GainMeterBase::update_meters()
753 char buf[32];
754 float mpeak = level_meter->update_meters();
756 if (mpeak > max_peak) {
757 max_peak = mpeak;
758 if (mpeak <= -200.0f) {
759 peak_display.set_label (_("-inf"));
760 } else {
761 snprintf (buf, sizeof(buf), "%.1f", mpeak);
762 peak_display.set_label (buf);
765 if (mpeak >= 0.0f) {
766 peak_display.set_name ("MixerStripPeakDisplayPeak");
771 void GainMeterBase::color_handler(bool dpi)
773 color_changed = true;
774 dpi_changed = (dpi) ? true : false;
775 setup_meters();
778 void
779 GainMeterBase::set_width (Width w, int len)
781 _width = w;
782 level_meter->setup_meters (len);
786 void
787 GainMeterBase::on_theme_changed()
789 style_changed = true;
792 GainMeter::GainMeter (Session* s, int fader_length)
793 : GainMeterBase (s, slider, false, fader_length)
795 gain_display_box.set_homogeneous (true);
796 gain_display_box.set_spacing (2);
797 gain_display_box.pack_start (gain_display, true, true);
799 meter_metric_area.set_name ("AudioTrackMetrics");
800 set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
802 gain_automation_style_button.set_name ("MixerAutomationModeButton");
803 gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
805 ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
806 ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
808 gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
809 gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
811 gain_automation_state_button.set_size_request(15, 15);
812 gain_automation_style_button.set_size_request(15, 15);
814 HBox* fader_centering_box = manage (new HBox);
815 fader_centering_box->pack_start (*gain_slider, true, false);
817 fader_vbox = manage (new Gtk::VBox());
818 fader_vbox->set_spacing (0);
819 fader_vbox->pack_start (*fader_centering_box, false, false, 0);
821 hbox.set_spacing (2);
822 hbox.pack_start (*fader_vbox, true, true);
824 set_spacing (2);
826 pack_start (gain_display_box, Gtk::PACK_SHRINK);
827 pack_start (hbox, Gtk::PACK_SHRINK);
829 meter_metric_area.signal_expose_event().connect (sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
832 void
833 GainMeter::set_controls (boost::shared_ptr<Route> r,
834 boost::shared_ptr<PeakMeter> meter,
835 boost::shared_ptr<Amp> amp)
837 if (level_meter->get_parent()) {
838 hbox.remove (*level_meter);
841 if (peak_display.get_parent()) {
842 gain_display_box.remove (peak_display);
845 if (gain_automation_state_button.get_parent()) {
846 fader_vbox->remove (gain_automation_state_button);
849 GainMeterBase::set_controls (r, meter, amp);
852 if we have a non-hidden route (ie. we're not the click or the auditioner),
853 pack some route-dependent stuff.
856 gain_display_box.pack_end (peak_display, true, true);
857 hbox.pack_end (*level_meter, true, true);
859 if (r && !r->is_hidden()) {
860 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
863 setup_meters ();
864 hbox.show_all ();
868 GainMeter::get_gm_width ()
870 Gtk::Requisition sz;
871 hbox.size_request (sz);
872 return sz.width;
875 Glib::RefPtr<Gdk::Pixmap>
876 GainMeter::render_metrics (Gtk::Widget& w)
878 Glib::RefPtr<Gdk::Window> win (w.get_window());
879 Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
880 Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
881 gint width, height;
882 int db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
883 char buf[32];
885 win->get_size (width, height);
887 Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
889 metric_pixmaps[w.get_name()] = pixmap;
891 pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
893 Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
895 for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
897 float fraction = log_meter (db_points[i]);
898 gint pos = height - (gint) floor (height * fraction);
900 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
902 layout->set_text (buf);
904 /* we want logical extents, not ink extents here */
906 int width, height;
907 layout->get_pixel_size (width, height);
909 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
910 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
913 return pixmap;
916 gint
917 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
919 Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
920 Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_INSENSITIVE));
921 GdkRectangle base_rect;
922 GdkRectangle draw_rect;
923 gint width, height;
925 win->get_size (width, height);
927 base_rect.width = width;
928 base_rect.height = height;
929 base_rect.x = 0;
930 base_rect.y = 0;
932 Glib::RefPtr<Gdk::Pixmap> pixmap;
933 std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
935 if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
936 pixmap = render_metrics (meter_metric_area);
937 } else {
938 pixmap = i->second;
941 gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
942 win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
943 style_changed = false;
944 return true;
947 boost::shared_ptr<PBD::Controllable>
948 GainMeterBase::get_controllable()
950 if (_amp) {
951 return _amp->gain_control();
952 } else {
953 return boost::shared_ptr<PBD::Controllable>();