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_box, false, false);
92 smaller_hbox->pack_start (add_button, false, false);
93 smaller_hbox->pack_start (save_button, false, false);
94 smaller_hbox->pack_start (delete_button, false, false);
95 smaller_hbox->pack_start (bypass_button, false, true);
97 constraint_hbox->set_spacing (5);
98 constraint_hbox->set_homogeneous (false);
100 VBox* v1_box = manage (new VBox);
101 VBox* v2_box = manage (new VBox);
102 pack_end (plugin_analysis_expander, false, false);
104 v1_box->pack_start (*smaller_hbox, false, true);
105 v2_box->pack_start (focus_button, false, true);
107 main_contents.pack_start (settings_box, false, false);
109 constraint_hbox->pack_end (*v2_box, false, false);
110 constraint_hbox->pack_end (*v1_box, false, false);
112 main_contents.pack_start (*constraint_hbox, false, false);
114 if (is_scrollable ) {
115 scroller.set_policy (Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
116 scroller.set_name ("PluginEditor");
117 scroller_view.set_name("PluginEditor");
118 scroller_view.add (hpacker);
119 scroller.add (scroller_view);
121 main_contents.pack_start (scroller, true, true);
124 main_contents.pack_start (hpacker, false, false);
127 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_state (Gtkmm2ext::Active);
132 bypass_button.unset_active_state ();
139 GenericPluginUI::~GenericPluginUI ()
141 if (output_controls.size() > 0) {
142 screen_update_connection.disconnect();
146 // Some functions for calculating the 'similarity' of two plugin
149 static int get_number(string label) {
150 static const char *digits = "0123456789";
153 std::size_t first_digit_pos = label.find_first_of(digits);
154 if (first_digit_pos != string::npos) {
155 // found some digits: there's a number in there somewhere
157 s << label.substr(first_digit_pos);
163 static int match_or_digit(char c1, char c2) {
164 return c1 == c2 || (isdigit(c1) && isdigit(c2));
167 static std::size_t matching_chars_at_head(const string s1, const string s2) {
168 std::size_t length, n = 0;
170 length = min(s1.length(), s2.length());
172 if (!match_or_digit(s1[n], s2[n]))
179 static std::size_t matching_chars_at_tail(const string s1, const string s2) {
180 std::size_t s1pos, s2pos, n = 0;
184 while (s1pos-- > 0 && s2pos-- > 0) {
185 if (!match_or_digit(s1[s1pos], s2[s2pos]) )
192 static const guint32 min_controls_per_column = 17, max_controls_per_column = 24;
193 static const float default_similarity_threshold = 0.3;
196 GenericPluginUI::build ()
203 int output_row, output_col;
204 int button_row, button_col;
205 int output_rows, output_cols;
206 int button_rows, button_cols;
208 hpacker.set_spacing (10);
210 output_rows = initial_output_rows;
211 output_cols = initial_output_cols;
212 button_rows = initial_button_rows;
213 button_cols = initial_button_cols;
219 button_table.set_homogeneous (false);
220 button_table.set_row_spacings (2);
221 button_table.set_col_spacings (2);
222 output_table.set_homogeneous (true);
223 output_table.set_row_spacings (2);
224 output_table.set_col_spacings (2);
225 button_table.set_border_width (5);
226 output_table.set_border_width (5);
228 hpacker.set_border_width (10);
230 bt_frame = manage (new Frame);
231 bt_frame->set_name ("BaseFrame");
232 bt_frame->set_label (_("Switches"));
233 bt_frame->add (button_table);
234 hpacker.pack_start(*bt_frame, true, true);
236 box = manage (new VBox);
237 box->set_border_width (5);
238 box->set_spacing (1);
240 frame = manage (new Frame);
241 frame->set_name ("BaseFrame");
242 frame->set_label (_("Controls"));
244 hpacker.pack_start(*frame, true, true);
246 /* find all ports. build control elements for all appropriate control ports */
247 std::vector<ControlUI *> cui_controls_list;
249 for (i = 0; i < plugin->parameter_count(); ++i) {
251 if (plugin->parameter_is_control (i)) {
253 /* Don't show latency control ports */
255 if (plugin->describe_parameter (Evoral::Parameter(PluginAutomation, 0, i)) == X_("latency")) {
261 boost::shared_ptr<ARDOUR::AutomationControl> c
262 = boost::dynamic_pointer_cast<ARDOUR::AutomationControl>(
263 insert->control(Evoral::Parameter(PluginAutomation, 0, i)));
265 if ((cui = build_control_ui (i, c)) == 0) {
266 error << string_compose(_("Plugin Editor: could not build control element for port %1"), i) << endmsg;
270 if (cui->controller || cui->clickbox || cui->combo) {
271 // Get all of the controls into a list, so that
272 // we can lay them out a bit more nicely later.
273 cui_controls_list.push_back(cui);
274 } else if (cui->button) {
276 if (!is_scrollable && button_row == button_rows) {
278 if (++button_col == button_cols) {
280 button_table.resize (button_rows, button_cols);
284 button_table.attach (*cui, button_col, button_col + 1, button_row, button_row+1,
288 } else if (cui->display) {
290 output_table.attach (*cui, output_col, output_col + 1, output_row, output_row+1,
293 // TODO: The meters should be divided into multiple rows
295 if (++output_col == output_cols) {
297 output_table.resize (output_rows, output_cols);
303 // Iterate over the list of controls to find which adjacent controls
304 // are similar enough to be grouped together.
306 string label, previous_label = "";
307 int numbers_in_labels[cui_controls_list.size()];
309 float similarity_scores[cui_controls_list.size()];
310 float most_similar = 0.0, least_similar = 1.0;
313 for (vector<ControlUI*>::iterator cuip = cui_controls_list.begin(); cuip != cui_controls_list.end(); ++cuip, ++i) {
314 label = (*cuip)->label.get_text();
315 numbers_in_labels[i] = get_number(label);
318 // A hand-wavy calculation of how similar this control's
319 // label is to the previous.
320 similarity_scores[i] =
322 ( matching_chars_at_head(label, previous_label) +
323 matching_chars_at_tail(label, previous_label) +
326 ) / (label.length() + previous_label.length());
327 if (numbers_in_labels[i] >= 0) {
328 similarity_scores[i] += (numbers_in_labels[i] == numbers_in_labels[i-1]);
330 least_similar = min(least_similar, similarity_scores[i]);
331 most_similar = max(most_similar, similarity_scores[i]);
333 similarity_scores[0] = 1.0;
336 // cerr << "label: " << label << " sim: " << fixed << setprecision(3) << similarity_scores[i] << " num: " << numbers_in_labels[i] << endl;
337 previous_label = label;
341 // cerr << "most similar: " << most_similar << ", least similar: " << least_similar << endl;
342 float similarity_threshold;
344 if (most_similar > 1.0) {
345 similarity_threshold = default_similarity_threshold;
347 similarity_threshold = most_similar - (1 - default_similarity_threshold);
350 // Now iterate over the list of controls to display them, placing an
351 // HSeparator between controls of less than a certain similarity, and
352 // starting a new column when necessary.
355 for (vector<ControlUI*>::iterator cuip = cui_controls_list.begin(); cuip != cui_controls_list.end(); ++cuip, ++i) {
357 ControlUI* cui = *cuip;
359 if (!is_scrollable) {
363 if (x > max_controls_per_column || similarity_scores[i] <= similarity_threshold) {
364 if (x > min_controls_per_column) {
365 frame = manage (new Frame);
366 frame->set_name ("BaseFrame");
367 frame->set_label (_("Controls"));
368 box = manage (new VBox);
369 box->set_border_width (5);
370 box->set_spacing (1);
372 hpacker.pack_start(*frame, true, true);
375 HSeparator *split = new HSeparator();
376 split->set_size_request(-1, 5);
377 box->pack_start(*split, false, false, 0);
381 box->pack_start (*cui, false, false);
388 if (box->children().empty()) {
389 hpacker.remove (*frame);
392 if (button_table.children().empty()) {
393 hpacker.remove (*bt_frame);
396 if (!output_table.children().empty()) {
397 frame = manage (new Frame);
398 frame->set_name ("BaseFrame");
399 frame->set_label(_("Meters"));
400 frame->add (output_table);
401 hpacker.pack_end (*frame, true, true);
406 output_table.show_all ();
407 button_table.show_all ();
410 GenericPluginUI::ControlUI::ControlUI ()
411 : automate_button (X_("")) // force creation of a label
413 automate_button.set_name ("PluginAutomateButton");
414 ARDOUR_UI::instance()->set_tip (automate_button, _("Automation control"));
416 /* XXX translators: use a string here that will be at least as long
417 as the longest automation label (see ::automation_state_changed()
418 below). be sure to include a descender.
421 set_size_request_to_display_given_text (automate_button, _("Mgnual"), 15, 10);
430 GenericPluginUI::ControlUI::~ControlUI()
433 delete meterinfo->meter;
439 GenericPluginUI::automation_state_changed (ControlUI* cui)
441 /* update button label */
443 // don't lock to avoid deadlock because we're triggered by
444 // AutomationControl::Changed() while the automation lock is taken
445 switch (insert->get_parameter_automation_state (cui->parameter())
446 & (Off|Play|Touch|Write)) {
448 cui->automate_button.set_label (_("Manual"));
451 cui->automate_button.set_label (_("Play"));
454 cui->automate_button.set_label (_("Write"));
457 cui->automate_button.set_label (_("Touch"));
460 cui->automate_button.set_label (_("???"));
466 static void integer_printer (char buf[32], Adjustment &adj, void */*arg*/)
468 snprintf (buf, 32, "%.0f", adj.get_value());
472 GenericPluginUI::print_parameter (char *buf, uint32_t len, uint32_t param)
474 plugin->print_parameter (param, buf, len);
477 GenericPluginUI::ControlUI*
478 GenericPluginUI::build_control_ui (guint32 port_index, boost::shared_ptr<AutomationControl> mcontrol)
480 ControlUI* control_ui = 0;
482 Plugin::ParameterDescriptor desc;
484 plugin->get_parameter_descriptor (port_index, desc);
486 control_ui = manage (new ControlUI ());
487 control_ui->combo = 0;
488 control_ui->control = mcontrol;
489 control_ui->update_pending = false;
490 control_ui->label.set_text (desc.label);
491 control_ui->label.set_alignment (0.0, 0.5);
492 control_ui->label.set_name ("PluginParameterLabel");
493 control_ui->port_index = port_index;
495 control_ui->set_spacing (5);
497 Gtk::Requisition req (control_ui->automate_button.size_request());
499 if (plugin->parameter_is_input(port_index)) {
501 /* Build a combo box */
503 control_ui->combo_map = plugin->get_scale_points (port_index);
505 if (control_ui->combo_map) {
506 std::vector<std::string> labels;
508 ARDOUR::Plugin::ScalePoints::const_iterator i = control_ui->combo_map->begin();
509 i != control_ui->combo_map->end();
512 labels.push_back(i->first);
515 control_ui->combo = new Gtk::ComboBoxText();
516 set_popdown_strings(*control_ui->combo, labels);
517 control_ui->combo->signal_changed().connect(
518 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::control_combo_changed),
520 mcontrol->Changed.connect(control_connections, invalidator(*this),
521 boost::bind(&GenericPluginUI::ui_parameter_changed,
524 control_ui->pack_start(control_ui->label, true, true);
525 control_ui->pack_start(*control_ui->combo, false, true);
527 update_control_display(control_ui);
536 control_ui->button = manage (new ToggleButton ());
537 control_ui->button->set_name ("PluginEditorButton");
538 control_ui->button->set_size_request (20, 20);
540 control_ui->pack_start (control_ui->label, true, true);
541 control_ui->pack_start (*control_ui->button, false, true);
542 control_ui->pack_start (control_ui->automate_button, false, false);
544 control_ui->button->signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::control_port_toggled), control_ui));
545 control_ui->automate_button.signal_clicked().connect (bind (mem_fun(*this, &GenericPluginUI::astate_clicked), control_ui, (uint32_t) port_index));
547 mcontrol->Changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::toggle_parameter_changed, this, control_ui), gui_context());
548 mcontrol->alist()->automation_state_changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::automation_state_changed, this, control_ui), gui_context());
550 if (plugin->get_parameter (port_index) > 0.5){
551 control_ui->button->set_active(true);
554 automation_state_changed (control_ui);
559 /* create the controller */
562 control_ui->controller = AutomationController::create(insert, mcontrol->parameter(), mcontrol);
565 /* XXX this code is not right yet, because it doesn't handle
566 the absence of bounds in any sensible fashion.
569 Adjustment* adj = control_ui->controller->adjustment();
570 boost::shared_ptr<PluginInsert::PluginControl> pc = boost::dynamic_pointer_cast<PluginInsert::PluginControl> (control_ui->control);
572 adj->set_lower (pc->user_to_ui (desc.lower));
573 adj->set_upper (pc->user_to_ui (desc.upper));
575 adj->set_step_increment (desc.step);
576 adj->set_page_increment (desc.largestep);
578 if (desc.integer_step) {
579 control_ui->clickbox = new ClickBox (adj, "PluginUIClickBox");
580 Gtkmm2ext::set_size_request_to_display_given_text (*control_ui->clickbox, "g9999999", 2, 2);
581 control_ui->clickbox->set_print_func (integer_printer, 0);
583 //sigc::slot<void,char*,uint32_t> pslot = sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::print_parameter), (uint32_t) port_index);
585 control_ui->controller->set_size_request (200, req.height);
586 control_ui->controller->set_name (X_("PluginSlider"));
587 control_ui->controller->set_style (BarController::LeftToRight);
588 control_ui->controller->set_use_parent (true);
589 control_ui->controller->set_logarithmic (desc.logarithmic);
591 control_ui->controller->StartGesture.connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::start_touch), control_ui));
592 control_ui->controller->StopGesture.connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::stop_touch), control_ui));
596 adj->set_value (pc->plugin_to_ui (plugin->get_parameter (port_index)));
598 /* XXX memory leak: SliderController not destroyed by ControlUI
599 destructor, and manage() reports object hierarchy
603 control_ui->pack_start (control_ui->label, true, true);
604 if (desc.integer_step) {
605 control_ui->pack_start (*control_ui->clickbox, false, false);
607 control_ui->pack_start (*control_ui->controller, false, false);
610 control_ui->pack_start (control_ui->automate_button, false, false);
611 control_ui->automate_button.signal_clicked().connect (sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::astate_clicked), control_ui, (uint32_t) port_index));
613 automation_state_changed (control_ui);
615 mcontrol->Changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::ui_parameter_changed, this, control_ui), gui_context());
616 mcontrol->alist()->automation_state_changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::automation_state_changed, this, control_ui), gui_context());
618 input_controls.push_back (control_ui);
620 } else if (plugin->parameter_is_output (port_index)) {
622 control_ui->display = manage (new EventBox);
623 control_ui->display->set_name ("ParameterValueDisplay");
625 control_ui->display_label = manage (new Label);
627 control_ui->display_label->set_name ("ParameterValueDisplay");
629 control_ui->display->add (*control_ui->display_label);
630 Gtkmm2ext::set_size_request_to_display_given_text (*control_ui->display, "-99,99", 2, 2);
632 control_ui->display->show_all ();
635 /* TODO: only make a meter if the port is Hinted for it */
637 MeterInfo * info = new MeterInfo(port_index);
638 control_ui->meterinfo = info;
640 info->meter = new FastMeter (5, 5, FastMeter::Vertical);
642 info->min_unbound = desc.min_unbound;
643 info->max_unbound = desc.max_unbound;
645 info->min = desc.lower;
646 info->max = desc.upper;
648 control_ui->vbox = manage (new VBox);
649 control_ui->hbox = manage (new HBox);
651 control_ui->label.set_angle(90);
652 control_ui->hbox->pack_start (control_ui->label, false, false);
653 control_ui->hbox->pack_start (*info->meter, false, false);
655 control_ui->vbox->pack_start (*control_ui->hbox, false, false);
657 control_ui->vbox->pack_start (*control_ui->display, false, false);
659 control_ui->pack_start (*control_ui->vbox);
661 control_ui->meterinfo->meter->show_all();
662 control_ui->meterinfo->packed = true;
664 output_controls.push_back (control_ui);
668 mcontrol->Changed.connect (control_connections, invalidator (*this), boost::bind (&GenericPluginUI::ui_parameter_changed, this, control_ui), gui_context());
675 GenericPluginUI::start_touch (GenericPluginUI::ControlUI* cui)
677 cui->control->start_touch (cui->control->session().transport_frame());
681 GenericPluginUI::stop_touch (GenericPluginUI::ControlUI* cui)
683 cui->control->stop_touch (false, cui->control->session().transport_frame());
687 GenericPluginUI::astate_clicked (ControlUI* cui, uint32_t /*port*/)
689 using namespace Menu_Helpers;
691 if (automation_menu == 0) {
692 automation_menu = manage (new Menu);
693 automation_menu->set_name ("ArdourContextMenu");
696 MenuList& items (automation_menu->items());
699 items.push_back (MenuElem (_("Manual"),
700 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Off, cui)));
701 items.push_back (MenuElem (_("Play"),
702 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Play, cui)));
703 items.push_back (MenuElem (_("Write"),
704 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Write, cui)));
705 items.push_back (MenuElem (_("Touch"),
706 sigc::bind (sigc::mem_fun(*this, &GenericPluginUI::set_automation_state), (AutoState) Touch, cui)));
708 automation_menu->popup (1, gtk_get_current_event_time());
712 GenericPluginUI::set_automation_state (AutoState state, ControlUI* cui)
714 insert->set_parameter_automation_state (cui->parameter(), state);
718 GenericPluginUI::toggle_parameter_changed (ControlUI* cui)
720 float val = cui->control->get_value();
722 if (!cui->ignore_change) {
724 cui->button->set_active (true);
726 cui->button->set_active (false);
732 GenericPluginUI::ui_parameter_changed (ControlUI* cui)
734 if (!cui->update_pending) {
735 cui->update_pending = true;
736 Gtkmm2ext::UI::instance()->call_slot (MISSING_INVALIDATOR, boost::bind (&GenericPluginUI::update_control_display, this, cui));
741 GenericPluginUI::update_control_display (ControlUI* cui)
743 /* XXX how do we handle logarithmic stuff here ? */
745 cui->update_pending = false;
747 float val = cui->control->get_value();
749 cui->ignore_change++;
751 if (cui->combo && cui->combo_map) {
752 for (ARDOUR::Plugin::ScalePoints::iterator it = cui->combo_map->begin(); it != cui->combo_map->end(); ++it) {
753 if (it->second == val) {
754 cui->combo->set_active_text(it->first);
758 } else if (cui->button) {
761 cui->button->set_active (true);
763 cui->button->set_active (false);
767 if( cui->controller ) {
768 cui->controller->display_effective_value();
773 if (cui->logarithmic) {
776 if (val != cui->adjustment->get_value()) {
777 cui->adjustment->set_value (val);
780 cui->ignore_change--;
784 GenericPluginUI::control_port_toggled (ControlUI* cui)
786 cui->ignore_change++;
787 insert->automation_control (cui->parameter())->set_value (cui->button->get_active());
788 cui->ignore_change--;
792 GenericPluginUI::control_combo_changed (ControlUI* cui)
794 if (!cui->ignore_change && cui->combo_map) {
795 string value = cui->combo->get_active_text();
796 insert->automation_control (cui->parameter())->set_value ((*cui->combo_map)[value]);
801 GenericPluginUI::start_updating (GdkEventAny*)
803 if (output_controls.size() > 0 ) {
804 screen_update_connection.disconnect();
805 screen_update_connection = ARDOUR_UI::instance()->RapidScreenUpdate.connect
806 (sigc::mem_fun(*this, &GenericPluginUI::output_update));
812 GenericPluginUI::stop_updating (GdkEventAny*)
814 for (vector<ControlUI*>::iterator i = input_controls.begin(); i != input_controls.end(); ++i) {
815 (*i)->controller->stop_updating ();
818 if (output_controls.size() > 0 ) {
819 screen_update_connection.disconnect();
826 GenericPluginUI::output_update ()
828 for (vector<ControlUI*>::iterator i = output_controls.begin(); i != output_controls.end(); ++i) {
829 float val = plugin->get_parameter ((*i)->port_index);
831 snprintf (buf, sizeof(buf), "%.2f", val);
832 (*i)->display_label->set_text (buf);
834 /* autoscaling for the meter */
835 if ((*i)->meterinfo && (*i)->meterinfo->packed) {
837 if (val < (*i)->meterinfo->min) {
838 if ((*i)->meterinfo->min_unbound)
839 (*i)->meterinfo->min = val;
841 val = (*i)->meterinfo->min;
844 if (val > (*i)->meterinfo->max) {
845 if ((*i)->meterinfo->max_unbound)
846 (*i)->meterinfo->max = val;
848 val = (*i)->meterinfo->max;
851 if ((*i)->meterinfo->max > (*i)->meterinfo->min ) {
852 float lval = (val - (*i)->meterinfo->min) / ((*i)->meterinfo->max - (*i)->meterinfo->min) ;
853 (*i)->meterinfo->meter->set (lval );