2 Copyright (C) 2000 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.
21 #include "gtk2ardour-config.h"
29 #include "pbd/stl_delete.h"
30 #include "pbd/xml++.h"
31 #include "pbd/failed_constructor.h"
33 #include <gtkmm2ext/click_box.h>
34 #include <gtkmm2ext/fastmeter.h>
35 #include <gtkmm2ext/barcontroller.h>
36 #include <gtkmm2ext/utils.h>
37 #include <gtkmm2ext/doi.h>
38 #include <gtkmm2ext/slider_controller.h>
40 #include "midi++/manager.h"
42 #include "ardour/plugin.h"
43 #include "ardour/plugin_insert.h"
44 #include "ardour/session.h"
48 #include "ardour_ui.h"
50 #include "plugin_ui.h"
52 #include "gui_thread.h"
53 #include "automation_controller.h"
58 using namespace ARDOUR;
60 using namespace Gtkmm2ext;
63 GenericPluginUI::GenericPluginUI (boost::shared_ptr<PluginInsert> pi, bool scrollable)
65 button_table (initial_button_rows, initial_button_cols),
66 output_table (initial_output_rows, initial_output_cols),
67 hAdjustment(0.0, 0.0, 0.0),
68 vAdjustment(0.0, 0.0, 0.0),
69 scroller_view(hAdjustment, vAdjustment),
71 is_scrollable(scrollable)
73 set_name ("PluginEditor");
74 set_border_width (10);
75 //set_homogeneous (false);
77 pack_start (main_contents, true, true);
78 settings_box.set_homogeneous (false);
80 HBox* constraint_hbox = manage (new HBox);
81 HBox* smaller_hbox = manage (new HBox);
82 smaller_hbox->set_spacing (4);
83 Label* combo_label = manage (new Label (_("<span size=\"large\">Presets</span>")));
84 combo_label->set_use_markup (true);
86 latency_button.add (latency_label);
87 latency_button.signal_clicked().connect (sigc::mem_fun (*this, &PlugUIBase::latency_button_clicked));
90 smaller_hbox->pack_start (latency_button, false, false, 10);
91 smaller_hbox->pack_start (_preset_combo, false, false);
92 smaller_hbox->pack_start (_preset_modified, false, false);
93 smaller_hbox->pack_start (add_button, false, false);
94 smaller_hbox->pack_start (save_button, false, false);
95 smaller_hbox->pack_start (delete_button, false, false);
96 smaller_hbox->pack_start (bypass_button, false, true);
98 constraint_hbox->set_spacing (5);
99 constraint_hbox->set_homogeneous (false);
101 VBox* v1_box = manage (new VBox);
102 VBox* v2_box = manage (new VBox);
103 pack_end (plugin_analysis_expander, false, false);
105 v1_box->pack_start (*smaller_hbox, false, true);
106 v2_box->pack_start (focus_button, false, true);
108 main_contents.pack_start (settings_box, false, false);
110 constraint_hbox->pack_end (*v2_box, false, false);
111 constraint_hbox->pack_end (*v1_box, false, false);
113 main_contents.pack_start (*constraint_hbox, false, false);
115 if (is_scrollable ) {
116 scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
117 scroller.set_name ("PluginEditor");
118 scroller_view.set_name("PluginEditor");
119 scroller_view.add (hpacker);
120 scroller.add (scroller_view);
122 main_contents.pack_start (scroller, true, true);
125 main_contents.pack_start (hpacker, false, false);
128 pi->ActiveChanged.connect (active_connection, invalidator (*this), boost::bind (&GenericPluginUI::processor_active_changed, this, boost::weak_ptr<Processor>(pi)), gui_context());
130 bypass_button.set_active (!pi->active());
136 GenericPluginUI::~GenericPluginUI ()
138 if (output_controls.size() > 0) {
139 screen_update_connection.disconnect();
143 // Some functions for calculating the 'similarity' of two plugin
146 static int get_number(string label) {
147 static const char *digits = "0123456789";
150 std::size_t first_digit_pos = label.find_first_of(digits);
151 if (first_digit_pos != string::npos) {
152 // found some digits: there's a number in there somewhere
154 s << label.substr(first_digit_pos);
160 static int match_or_digit(char c1, char c2) {
161 return c1 == c2 || (isdigit(c1) && isdigit(c2));
164 static std::size_t matching_chars_at_head(const string s1, const string s2) {
165 std::size_t length, n = 0;
167 length = min(s1.length(), s2.length());
169 if (!match_or_digit(s1[n], s2[n]))
176 static std::size_t matching_chars_at_tail(const string s1, const string s2) {
177 std::size_t s1pos, s2pos, n = 0;
181 while (s1pos-- > 0 && s2pos-- > 0) {
182 if (!match_or_digit(s1[s1pos], s2[s2pos]) )
189 static const guint32 min_controls_per_column = 17, max_controls_per_column = 24;
190 static const float default_similarity_threshold = 0.3;
193 GenericPluginUI::build ()
200 int output_row, output_col;
201 int button_row, button_col;
202 int output_rows, output_cols;
203 int button_rows, button_cols;
205 hpacker.set_spacing (10);
207 output_rows = initial_output_rows;
208 output_cols = initial_output_cols;
209 button_rows = initial_button_rows;
210 button_cols = initial_button_cols;
216 button_table.set_homogeneous (false);
217 button_table.set_row_spacings (2);
218 button_table.set_col_spacings (2);
219 output_table.set_homogeneous (true);
220 output_table.set_row_spacings (2);
221 output_table.set_col_spacings (2);
222 button_table.set_border_width (5);
223 output_table.set_border_width (5);
225 hpacker.set_border_width (10);
227 bt_frame = manage (new Frame);
228 bt_frame->set_name ("BaseFrame");
229 bt_frame->set_label (_("Switches"));
230 bt_frame->add (button_table);
231 hpacker.pack_start(*bt_frame, true, true);
233 box = manage (new VBox);
234 box->set_border_width (5);
235 box->set_spacing (1);
237 frame = manage (new Frame);
238 frame->set_name ("BaseFrame");
239 frame->set_label (_("Controls"));
241 hpacker.pack_start(*frame, true, true);
243 /* find all ports. build control elements for all appropriate control ports */
244 std::vector<ControlUI *> cui_controls_list;
246 for (i = 0; i < plugin->parameter_count(); ++i) {
248 if (plugin->parameter_is_control (i)) {
250 /* Don't show latency control ports */
252 if (plugin->describe_parameter (Evoral::Parameter(PluginAutomation, 0, i)) == X_("latency")) {
258 boost::shared_ptr<ARDOUR::AutomationControl> c
259 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(
260 insert->control(Evoral::Parameter(PluginAutomation, 0, i)));
262 if ((cui = build_control_ui (i, c)) == 0) {
263 error << string_compose(_("Plugin Editor: could not build control element for port %1"), i) << endmsg;
267 if (cui->controller || cui->clickbox || cui->combo) {
268 // Get all of the controls into a list, so that
269 // we can lay them out a bit more nicely later.
270 cui_controls_list.push_back(cui);
271 } else if (cui->button) {
273 if (!is_scrollable && button_row == button_rows) {
275 if (++button_col == button_cols) {
277 button_table.resize (button_rows, button_cols);
281 button_table.attach (*cui, button_col, button_col + 1, button_row, button_row+1,
285 } else if (cui->display) {
287 output_table.attach (*cui, output_col, output_col + 1, output_row, output_row+1,
290 // TODO: The meters should be divided into multiple rows
292 if (++output_col == output_cols) {
294 output_table.resize (output_rows, output_cols);
300 // Iterate over the list of controls to find which adjacent controls
301 // are similar enough to be grouped together.
303 string label, previous_label = "";
304 int numbers_in_labels[cui_controls_list.size()];
306 float similarity_scores[cui_controls_list.size()];
307 float most_similar = 0.0, least_similar = 1.0;
310 for (vector<ControlUI*>::iterator cuip = cui_controls_list.begin(); cuip != cui_controls_list.end(); ++cuip, ++i) {
311 label = (*cuip)->label.get_text();
312 numbers_in_labels[i] = get_number(label);
315 // A hand-wavy calculation of how similar this control's
316 // label is to the previous.
317 similarity_scores[i] =
319 ( matching_chars_at_head(label, previous_label) +
320 matching_chars_at_tail(label, previous_label) +
323 ) / (label.length() + previous_label.length());
324 if (numbers_in_labels[i] >= 0) {
325 similarity_scores[i] += (numbers_in_labels[i] == numbers_in_labels[i-1]);
327 least_similar = min(least_similar, similarity_scores[i]);
328 most_similar = max(most_similar, similarity_scores[i]);
330 similarity_scores[0] = 1.0;
333 // cerr << "label: " << label << " sim: " << fixed << setprecision(3) << similarity_scores[i] << " num: " << numbers_in_labels[i] << endl;
334 previous_label = label;
338 // cerr << "most similar: " << most_similar << ", least similar: " << least_similar << endl;
339 float similarity_threshold;
341 if (most_similar > 1.0) {
342 similarity_threshold = default_similarity_threshold;
344 similarity_threshold = most_similar - (1 - default_similarity_threshold);
347 // Now iterate over the list of controls to display them, placing an
348 // HSeparator between controls of less than a certain similarity, and
349 // starting a new column when necessary.
352 for (vector<ControlUI*>::iterator cuip = cui_controls_list.begin(); cuip != cui_controls_list.end(); ++cuip, ++i) {
354 ControlUI* cui = *cuip;
356 if (!is_scrollable) {
360 if (x > max_controls_per_column || similarity_scores[i] <= similarity_threshold) {
361 if (x > min_controls_per_column) {
362 frame = manage (new Frame);
363 frame->set_name ("BaseFrame");
364 frame->set_label (_("Controls"));
365 box = manage (new VBox);
366 box->set_border_width (5);
367 box->set_spacing (1);
369 hpacker.pack_start(*frame, true, true);
372 HSeparator *split = new HSeparator();
373 split->set_size_request(-1, 5);
374 box->pack_start(*split, false, false, 0);
378 box->pack_start (*cui, false, false);
385 if (box->children().empty()) {
386 hpacker.remove (*frame);
389 if (button_table.children().empty()) {
390 hpacker.remove (*bt_frame);
393 if (!output_table.children().empty()) {
394 frame = manage (new Frame);
395 frame->set_name ("BaseFrame");
396 frame->set_label(_("Meters"));
397 frame->add (output_table);
398 hpacker.pack_end (*frame, true, true);
403 output_table.show_all ();
404 button_table.show_all ();
407 GenericPluginUI::ControlUI::ControlUI ()
408 : automate_button (X_("")) // force creation of a label
410 automate_button.set_name ("PluginAutomateButton");
411 ARDOUR_UI::instance()->set_tip (automate_button, _("Automation control"));
413 /* XXX translators: use a string here that will be at least as long
414 as the longest automation label (see ::automation_state_changed()
415 below). be sure to include a descender.
418 set_size_request_to_display_given_text (automate_button, _("Mgnual"), 15, 10);
427 GenericPluginUI::ControlUI::~ControlUI()
430 delete meterinfo->meter;
436 GenericPluginUI::automation_state_changed (ControlUI* cui)
438 /* update button label */
440 // don't lock to avoid deadlock because we're triggered by
441 // AutomationControl::Changed() while the automation lock is taken
442 switch (insert->get_parameter_automation_state (cui->parameter()) & (ARDOUR::Off|Play|Touch|Write)) {
444 cui->automate_button.set_label (S_("Automation|Manual"));
447 cui->automate_button.set_label (_("Play"));
450 cui->automate_button.set_label (_("Write"));
453 cui->automate_button.set_label (_("Touch"));
456 cui->automate_button.set_label (_("???"));
463 GenericPluginUI::integer_printer (char buf[32], Adjustment &adj, ControlUI* cui)
465 float const v = adj.get_value ();
467 if (cui->scale_points) {
468 Plugin::ScalePoints::const_iterator i = cui->scale_points->begin ();
469 while (i != cui->scale_points->end() && i->second != v) {
473 if (i != cui->scale_points->end ()) {
474 snprintf (buf, 32, "%s", i->first.c_str());
479 snprintf (buf, 32, "%.0f", v);
484 GenericPluginUI::print_parameter (char *buf, uint32_t len, uint32_t param)
486 plugin->print_parameter (param, buf, len);
489 GenericPluginUI::ControlUI*
490 GenericPluginUI::build_control_ui (guint32 port_index, boost::shared_ptr<AutomationControl> mcontrol)
492 ControlUI* control_ui = 0;
494 Plugin::ParameterDescriptor desc;
496 plugin->get_parameter_descriptor (port_index, desc);
498 control_ui = manage (new ControlUI ());
499 control_ui->combo = 0;
500 control_ui->control = mcontrol;
501 control_ui->update_pending = false;
502 control_ui->label.set_text (desc.label);
503 control_ui->label.set_alignment (0.0, 0.5);
504 control_ui->label.set_name ("PluginParameterLabel");
505 control_ui->port_index = port_index;
507 control_ui->set_spacing (5);
509 Gtk::Requisition req (control_ui->automate_button.size_request());
511 if (plugin->parameter_is_input(port_index)) {
513 /* See if there any named values for our input value */
514 control_ui->scale_points = plugin->get_scale_points (port_index);
516 /* If this parameter is an integer, work out the number of distinct values
517 it can take on (assuming that lower and upper values are allowed).
519 int const steps = desc.integer_step ? (desc.upper - desc.lower + 1) / desc.step : 0;
521 if (control_ui->scale_points && ((steps && control_ui->scale_points->size() == steps) || desc.enumeration)) {
524 * a) There is a label for each possible value of this input, or
525 * b) This port is marked as being an enumeration.
528 std::vector<std::string> labels;
530 ARDOUR::Plugin::ScalePoints::const_iterator i = control_ui->scale_points->begin();
531 i != control_ui->scale_points->end();
534 labels.push_back(i->first);
537 control_ui->combo = new Gtk::ComboBoxText();
538 set_popdown_strings(*control_ui->combo, labels);
539 control_ui->combo->signal_changed().connect(
540 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::control_combo_changed),
542 mcontrol->Changed.connect(control_connections, invalidator(*this),
543 boost::bind(&GenericPluginUI::ui_parameter_changed,
546 control_ui->pack_start(control_ui->label, true, true);
547 control_ui->pack_start(*control_ui->combo, false, true);
549 update_control_display(control_ui);
558 control_ui->button = manage (new ToggleButton ());
559 control_ui->button->set_name ("PluginEditorButton");
560 control_ui->button->set_size_request (20, 20);
562 control_ui->pack_start (control_ui->label, true, true);
563 control_ui->pack_start (*control_ui->button, false, true);
564 control_ui->pack_start (control_ui->automate_button, false, false);
566 control_ui->button->signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::control_port_toggled), control_ui));
567 control_ui->automate_button.signal_clicked().connect (bind (mem_fun(*this, &GenericPluginUI::astate_clicked), control_ui, (uint32_t) port_index));
569 mcontrol->Changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::toggle_parameter_changed, this, control_ui), gui_context());
570 mcontrol->alist()->automation_state_changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::automation_state_changed, this, control_ui), gui_context());
572 if (plugin->get_parameter (port_index) > 0.5){
573 control_ui->button->set_active(true);
576 automation_state_changed (control_ui);
581 /* create the controller */
584 control_ui->controller = AutomationController::create(insert, mcontrol->parameter(), mcontrol);
587 /* XXX this code is not right yet, because it doesn't handle
588 the absence of bounds in any sensible fashion.
591 Adjustment* adj = control_ui->controller->adjustment();
592 boost::shared_ptr<PluginInsert::PluginControl> pc = boost::dynamic_pointer_cast<PluginInsert::PluginControl> (control_ui->control);
594 adj->set_lower (pc->internal_to_interface (desc.lower));
595 adj->set_upper (pc->internal_to_interface (desc.upper));
597 adj->set_step_increment (desc.step);
598 adj->set_page_increment (desc.largestep);
600 if (desc.integer_step) {
601 control_ui->clickbox = new ClickBox (adj, "PluginUIClickBox");
602 Gtkmm2ext::set_size_request_to_display_given_text (*control_ui->clickbox, "g9999999", 2, 2);
603 control_ui->clickbox->set_printer (sigc::bind (sigc::mem_fun (*this, &GenericPluginUI::integer_printer), control_ui));
605 //sigc::slot<void,char*,uint32_t> pslot = sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::print_parameter), (uint32_t) port_index);
607 control_ui->controller->set_size_request (200, req.height);
608 control_ui->controller->set_name (X_("PluginSlider"));
609 control_ui->controller->set_style (BarController::LeftToRight);
610 control_ui->controller->set_use_parent (true);
611 control_ui->controller->set_logarithmic (desc.logarithmic);
613 control_ui->controller->StartGesture.connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::start_touch), control_ui));
614 control_ui->controller->StopGesture.connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::stop_touch), control_ui));
618 adj->set_value (pc->internal_to_interface (plugin->get_parameter (port_index)));
620 /* XXX memory leak: SliderController not destroyed by ControlUI
621 destructor, and manage() reports object hierarchy
625 control_ui->pack_start (control_ui->label, true, true);
626 if (desc.integer_step) {
627 control_ui->pack_start (*control_ui->clickbox, false, false);
629 control_ui->pack_start (*control_ui->controller, false, false);
632 control_ui->pack_start (control_ui->automate_button, false, false);
633 control_ui->automate_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::astate_clicked), control_ui, (uint32_t) port_index));
635 automation_state_changed (control_ui);
637 mcontrol->Changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::ui_parameter_changed, this, control_ui), gui_context());
638 mcontrol->alist()->automation_state_changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::automation_state_changed, this, control_ui), gui_context());
640 input_controls.push_back (control_ui);
642 } else if (plugin->parameter_is_output (port_index)) {
644 control_ui->display = manage (new EventBox);
645 control_ui->display->set_name ("ParameterValueDisplay");
647 control_ui->display_label = manage (new Label);
649 control_ui->display_label->set_name ("ParameterValueDisplay");
651 control_ui->display->add (*control_ui->display_label);
652 Gtkmm2ext::set_size_request_to_display_given_text (*control_ui->display, "-99,99", 2, 2);
654 control_ui->display->show_all ();
657 /* TODO: only make a meter if the port is Hinted for it */
659 MeterInfo * info = new MeterInfo(port_index);
660 control_ui->meterinfo = info;
662 info->meter = new FastMeter (5, 5, FastMeter::Vertical);
664 info->min_unbound = desc.min_unbound;
665 info->max_unbound = desc.max_unbound;
667 info->min = desc.lower;
668 info->max = desc.upper;
670 control_ui->vbox = manage (new VBox);
671 control_ui->hbox = manage (new HBox);
673 control_ui->label.set_angle(90);
674 control_ui->hbox->pack_start (control_ui->label, false, false);
675 control_ui->hbox->pack_start (*info->meter, false, false);
677 control_ui->vbox->pack_start (*control_ui->hbox, false, false);
679 control_ui->vbox->pack_start (*control_ui->display, false, false);
681 control_ui->pack_start (*control_ui->vbox);
683 control_ui->meterinfo->meter->show_all();
684 control_ui->meterinfo->packed = true;
686 output_controls.push_back (control_ui);
690 mcontrol->Changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::ui_parameter_changed, this, control_ui), gui_context());
697 GenericPluginUI::start_touch (GenericPluginUI::ControlUI* cui)
699 cui->control->start_touch (cui->control->session().transport_frame());
703 GenericPluginUI::stop_touch (GenericPluginUI::ControlUI* cui)
705 cui->control->stop_touch (false, cui->control->session().transport_frame());
709 GenericPluginUI::astate_clicked (ControlUI* cui, uint32_t /*port*/)
711 using namespace Menu_Helpers;
713 if (automation_menu == 0) {
714 automation_menu = manage (new Menu);
715 automation_menu->set_name ("ArdourContextMenu");
718 MenuList& items (automation_menu->items());
721 items.push_back (MenuElem (S_("Automation|Manual"),
722 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) ARDOUR::Off, cui)));
723 items.push_back (MenuElem (_("Play"),
724 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Play, cui)));
725 items.push_back (MenuElem (_("Write"),
726 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Write, cui)));
727 items.push_back (MenuElem (_("Touch"),
728 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Touch, cui)));
730 automation_menu->popup (1, gtk_get_current_event_time());
734 GenericPluginUI::set_automation_state (AutoState state, ControlUI* cui)
736 insert->set_parameter_automation_state (cui->parameter(), state);
740 GenericPluginUI::toggle_parameter_changed (ControlUI* cui)
742 float val = cui->control->get_value();
744 if (!cui->ignore_change) {
746 cui->button->set_active (true);
748 cui->button->set_active (false);
754 GenericPluginUI::ui_parameter_changed (ControlUI* cui)
756 if (!cui->update_pending) {
757 cui->update_pending = true;
758 Gtkmm2ext::UI::instance()->call_slot (MISSING_INVALIDATOR, boost::bind (&GenericPluginUI::update_control_display, this, cui));
763 GenericPluginUI::update_control_display (ControlUI* cui)
765 /* XXX how do we handle logarithmic stuff here ? */
767 cui->update_pending = false;
769 float val = cui->control->get_value();
771 cui->ignore_change++;
773 if (cui->combo && cui->scale_points) {
774 for (ARDOUR::Plugin::ScalePoints::iterator it = cui->scale_points->begin(); it != cui->scale_points->end(); ++it) {
775 if (it->second == val) {
776 cui->combo->set_active_text(it->first);
780 } else if (cui->button) {
783 cui->button->set_active (true);
785 cui->button->set_active (false);
789 if( cui->controller ) {
790 cui->controller->display_effective_value();
795 if (cui->logarithmic) {
798 if (val != cui->adjustment->get_value()) {
799 cui->adjustment->set_value (val);
802 cui->ignore_change--;
806 GenericPluginUI::control_port_toggled (ControlUI* cui)
808 cui->ignore_change++;
809 insert->automation_control (cui->parameter())->set_value (cui->button->get_active());
810 cui->ignore_change--;
814 GenericPluginUI::control_combo_changed (ControlUI* cui)
816 if (!cui->ignore_change && cui->scale_points) {
817 string value = cui->combo->get_active_text();
818 insert->automation_control (cui->parameter())->set_value ((*cui->scale_points)[value]);
823 GenericPluginUI::start_updating (GdkEventAny*)
825 if (output_controls.size() > 0 ) {
826 screen_update_connection.disconnect();
827 screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
828 (sigc::mem_fun(*this, &GenericPluginUI::output_update));
834 GenericPluginUI::stop_updating (GdkEventAny*)
836 for (vector<ControlUI*>::iterator i = input_controls.begin(); i != input_controls.end(); ++i) {
837 (*i)->controller->stop_updating ();
840 if (output_controls.size() > 0 ) {
841 screen_update_connection.disconnect();
848 GenericPluginUI::output_update ()
850 for (vector<ControlUI*>::iterator i = output_controls.begin(); i != output_controls.end(); ++i) {
851 float val = plugin->get_parameter ((*i)->port_index);
853 snprintf (buf, sizeof(buf), "%.2f", val);
854 (*i)->display_label->set_text (buf);
856 /* autoscaling for the meter */
857 if ((*i)->meterinfo && (*i)->meterinfo->packed) {
859 if (val < (*i)->meterinfo->min) {
860 if ((*i)->meterinfo->min_unbound)
861 (*i)->meterinfo->min = val;
863 val = (*i)->meterinfo->min;
866 if (val > (*i)->meterinfo->max) {
867 if ((*i)->meterinfo->max_unbound)
868 (*i)->meterinfo->max = val;
870 val = (*i)->meterinfo->max;
873 if ((*i)->meterinfo->max > (*i)->meterinfo->min ) {
874 float lval = (val - (*i)->meterinfo->min) / ((*i)->meterinfo->max - (*i)->meterinfo->min) ;
875 (*i)->meterinfo->meter->set (lval );