Initial import of gtk2_ardour.

git-svn-id: svn://localhost/trunk/ardour2@24 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 762 insertions, 0 deletions

diff --git a/gtk2_ardour/gain_meter.cc b/gtk2_ardour/gain_meter.cc
new file mode 100644
index 0000000000..0e7f3b77aa
--- /dev/null
+++ b/gtk2_ardour/gain_meter.cc
@@ -0,0 +1,762 @@
+/*
+  Copyright (C) 2002 Paul Davis
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+  $Id$
+*/
+
+#include <limits.h>
+
+#include <ardour/io.h>
+#include <ardour/route.h>
+#include <ardour/route_group.h>
+#include <ardour/session.h>
+#include <ardour/session_route.h>
+#include <ardour/dB.h>
+
+#include <gtkmmext/utils.h>
+#include <gtkmmext/pix.h>
+#include <gtkmmext/fastmeter.h>
+#include <gtkmmext/stop_signal.h>
+#include <gtkmmext/barcontroller.h>
+#include <midi++/manager.h>
+#include <pbd/fastlog.h>
+
+#include "ardour_ui.h"
+#include "gain_meter.h"
+#include "utils.h"
+#include "logmeter.h"
+#include "gui_thread.h"
+
+#include <ardour/session.h>
+#include <ardour/route.h>
+
+#include "i18n.h"
+#include "misc_xpms"
+
+using namespace ARDOUR;
+using namespace Gtkmmext;
+using namespace Gtk;
+using namespace SigC;
+
+Signal0<void> GainMeter::ResetAllPeakDisplays;
+Signal1<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
+Pix* GainMeter::slider_pix = 0;
+
+int
+GainMeter::setup_slider_pix ()
+{
+	vector<const char **> xpms;
+
+	xpms.push_back (vslider_rail_xpm);
+	xpms.push_back (vslider_slider_xpm);
+
+	if ((slider_pix = get_pix ("sliders", xpms, false)) == 0) {
+		error << _("Cannot create slider pixmaps") << endmsg;
+		return -1;
+	}
+
+	slider_pix->ref ();
+	return 0;
+}
+
+GainMeter::GainMeter (IO& io, Session& s)
+	: _io (io),
+	  _session (s),
+	  gain_slider (0),
+	  // 0.781787 is the value needed for gain to be set to 0.
+	  gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
+	  gain_display (&gain_adjustment, "MixerStripGainDisplay"),
+	  gain_unit_label (_("dbFS")),
+	  meter_point_label (_("pre")),
+	  top_table (1, 2)
+	
+{
+	if (slider_pix == 0) {
+		setup_slider_pix ();
+	}
+
+	ignore_toggle = false;
+	meter_menu = 0;
+	
+	gain_slider = manage (new VSliderController (slider_pix,
+						     &gain_adjustment,
+						     & _io.midi_gain_control(),
+						     false));
+
+	gain_slider->button_press_event.connect (slot (*this, &GainMeter::start_gain_touch));
+	gain_slider->button_release_event.connect (slot (*this, &GainMeter::end_gain_touch));
+	gain_slider->set_name ("MixerGainMeter");
+
+	if (_session.midi_port()) {
+		_io.set_midi_to_gain_function (slider_position_to_gain);
+		_io.set_gain_to_midi_function (gain_to_slider_position);
+	}
+
+	gain_display.set_print_func (_gain_printer, this);
+	set_usize_to_display_given_text (gain_display, "-86.0", 2, 2);
+
+	gain_unit_button.add (gain_unit_label);
+	gain_unit_button.set_name ("MixerStripGainUnitButton");
+	gain_unit_label.set_name ("MixerStripGainUnitButton");
+
+	top_table.set_col_spacings (2);
+	top_table.set_homogeneous (true);
+	top_table.attach (gain_unit_button, 0, 1, 0, 1);
+
+	Route* r;
+
+	if ((r = dynamic_cast<Route*> (&_io)) != 0) {
+		r->meter_change.connect (slot (*this, &GainMeter::meter_changed));
+		meter_point_button.add (meter_point_label);
+		meter_point_button.set_name ("MixerStripMeterPreButton");
+		meter_point_label.set_name ("MixerStripMeterPreButton");
+		
+		switch (r->meter_point()) {
+		case MeterInput:
+			meter_point_label.set_text (_("input"));
+			break;
+			
+		case MeterPreFader:
+			meter_point_label.set_text (_("pre"));
+			break;
+			
+		case MeterPostFader:
+			meter_point_label.set_text (_("post"));
+			break;
+		}
+		
+		/* TRANSLATORS: this string should be longest of the strings
+		   used to describe meter points. In english, its "input".
+		*/
+		
+		set_usize_to_display_given_text (meter_point_button, _("tupni"), 2, 2);
+
+		meter_point_button.button_press_event.connect (slot (*this, &GainMeter::meter_press));
+		meter_point_button.button_release_event.connect (slot (*this, &GainMeter::meter_release));
+
+		top_table.attach (meter_point_button, 1, 2, 0, 1);
+	}
+
+	gain_display_box.set_spacing (2);
+	gain_display_frame.set_shadow_type (GTK_SHADOW_IN);
+	gain_display_frame.set_name ("BaseFrame");
+	gain_display_frame.add (gain_display);
+	gain_display_box.pack_start (gain_display_frame, false, false);
+
+	peak_display.set_name ("MixerStripPeakDisplay");
+	set_usize_to_display_given_text (peak_display, "-86.0", 2, 2);
+	peak_display.add (peak_display_label);
+	peak_display_frame.set_shadow_type (GTK_SHADOW_IN);
+	peak_display_frame.set_name ("BaseFrame");
+	peak_display_frame.add (peak_display);
+	max_peak = minus_infinity();
+	peak_display_label.set_text (_("-inf"));
+	
+	gain_display_box.pack_start (peak_display_frame, false, false);
+
+
+	meter_metric_area.set_usize (18, -1);
+	meter_metric_area.set_name ("MeterMetricsStrip");
+
+	meter_packer.show ();
+	gain_slider->show_all ();
+
+	meter_packer.set_spacing (2);
+	fader_box.set_spacing (2);
+
+	fader_box.pack_start (*gain_slider, false, false);
+
+	hbox.set_spacing (4);
+	hbox.pack_start (fader_box, false, false);
+	hbox.pack_start (meter_packer, false, false);
+
+	set_spacing (4);
+	pack_start (top_table, false, false);
+	pack_start (gain_display_box, false, false);
+	pack_start (hbox, false, false);
+
+	show_all ();
+
+	_io.gain_changed.connect (slot (*this, &GainMeter::gain_changed));
+
+	meter_metric_area.expose_event.connect (slot (*this, &GainMeter::meter_metrics_expose));
+	gain_adjustment.value_changed.connect (slot (*this, &GainMeter::gain_adjusted));
+	peak_display.button_release_event.connect (slot (*this, &GainMeter::peak_button_release));
+
+	_session.MeterHoldChanged.connect (slot (*this, &GainMeter::meter_hold_changed));
+	
+	gain_changed (0);
+	update_gain_sensitive ();
+
+	ResetAllPeakDisplays.connect (slot (*this, &GainMeter::reset_peak_display));
+	ResetGroupPeakDisplays.connect (slot (*this, &GainMeter::reset_group_peak_display));
+}
+
+void
+GainMeter::set_width (Width w)
+{
+	switch (w) {
+	case Wide:
+		peak_display_frame.show_all();
+		break;
+	case Narrow:
+		peak_display_frame.hide_all();
+		break;
+	}
+
+	_width = w;
+	setup_meters ();
+}
+
+gint
+GainMeter::meter_metrics_expose (GdkEventExpose *ev)
+{
+	/* XXX optimize this so that it doesn't do it all everytime */
+
+	double fraction;
+
+	Gdk_Window win (meter_metric_area.get_window());
+	Gdk_GC fg_gc (meter_metric_area.get_style()->get_fg_gc (GTK_STATE_NORMAL));
+	Gdk_GC bg_gc (meter_metric_area.get_style()->get_bg_gc (GTK_STATE_NORMAL));
+	Gdk_Font font (meter_metric_area.get_style()->get_font());
+	gint x, y, width, height, depth;
+	gint pos;
+	int  db_points[] = { -50, -10, -3, 0, 6 };
+	uint32_t i;
+	char buf[32];
+	GdkRectangle base_rect;
+	GdkRectangle draw_rect;
+
+	win.get_geometry (x, y, width, height, depth);
+	
+	base_rect.width = width;
+	base_rect.height = height;
+	base_rect.x = 0;
+	base_rect.y = 0;
+
+	gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
+	win.draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
+
+	for (i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
+		fraction = log_meter (db_points[i]);
+		pos = height - (gint) floor (height * fraction);
+
+		snprintf (buf, sizeof (buf), "%d", db_points[i]);
+
+		gint twidth;
+		gint lbearing;
+		gint rbearing;
+		gint ascent;
+		gint descent;
+
+		gdk_string_extents (font,
+				    buf,
+				    &lbearing,
+				    &rbearing,
+				    &twidth,
+				    &ascent,
+				    &descent);
+
+		win.draw_text (font, fg_gc, width - twidth, pos + ascent, buf, strlen (buf));
+	}
+
+	return TRUE;
+}
+
+GainMeter::~GainMeter ()
+{
+
+	if (meter_menu) {
+		delete meter_menu;
+	}
+
+	for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
+		if ((*i).meter) {
+			delete (*i).meter;
+		}
+	}
+}
+
+void
+GainMeter::update_meters ()
+{
+	vector<MeterInfo>::iterator i;
+	uint32_t n;
+	float peak;
+	char buf[32];
+
+	
+	for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+                if ((*i).packed) {
+                        peak = _io.peak_input_power (n);
+
+			if (_session.meter_falloff() == 0.0f || peak > (*i).meter->get_user_level()) {
+				(*i).meter->set (log_meter (peak), peak);
+			}
+
+                        if (peak > max_peak) {
+                                max_peak = peak;
+                                /* set peak display */
+                                snprintf (buf, sizeof(buf), "%.1f", max_peak);
+                                peak_display_label.set_text (buf);
+
+                                if (max_peak >= 0.0f) {
+                                        peak_display.set_name ("MixerStripPeakDisplayPeak");
+                                }
+                        }
+                }
+        }
+
+}
+
+void
+GainMeter::update_meters_falloff ()
+{
+	vector<MeterInfo>::iterator i;
+	uint32_t n;
+	float dbpeak;
+	
+	for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+		if ((*i).packed) {
+			// just do falloff
+			//peak = (*i).meter->get_level() * _falloff_rate;
+			dbpeak = (*i).meter->get_user_level() - _session.meter_falloff();
+
+			dbpeak = std::max(dbpeak, -200.0f);
+			
+			// cerr << "tmplevel: " << tmplevel << endl;
+			(*i).meter->set (log_meter (dbpeak), dbpeak);
+		}
+	}
+	
+}
+
+
+void
+GainMeter::meter_hold_changed()
+{
+	ENSURE_GUI_THREAD(slot (*this, &GainMeter::meter_hold_changed));
+	
+	vector<MeterInfo>::iterator i;
+	uint32_t n;
+	
+	for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+		
+		(*i).meter->set_hold_count ((uint32_t) floor(_session.meter_hold()));
+	}
+}
+
+void
+GainMeter::hide_all_meters ()
+{
+	bool remove_metric_area = false;
+
+	for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
+		if ((*i).packed) {
+			remove_metric_area = true;
+			meter_packer.remove (*((*i).meter));
+			(*i).packed = false;
+		}
+	}
+
+	if (remove_metric_area) {
+		if (meter_metric_area.get_parent()) {
+			meter_packer.remove (meter_metric_area);
+		}
+	}
+}
+
+void
+GainMeter::setup_meters ()
+{
+	uint32_t nmeters = _io.n_outputs();
+	guint16 width;
+
+	hide_all_meters ();
+
+	Route* r;
+
+	if ((r = dynamic_cast<Route*> (&_io)) != 0) {
+
+		switch (r->meter_point()) {
+		case MeterPreFader:
+		case MeterInput:
+			nmeters = r->n_inputs();
+			break;
+		case MeterPostFader:
+			nmeters = r->n_outputs();
+			break;
+		}
+
+	} else {
+
+		nmeters = _io.n_outputs();
+
+	}
+
+	if (nmeters == 0) {
+		return;
+	}
+
+	if (_width == Wide) {
+		meter_packer.pack_start (meter_metric_area, false, false);
+		meter_metric_area.show_all ();
+	}
+
+	if (nmeters <= 2) {
+		width = regular_meter_width;
+	} else {
+		width = thin_meter_width;
+	}
+
+	while (meters.size() < nmeters) {
+		meters.push_back (MeterInfo());
+	}
+
+	for (uint32_t n = 0; n < nmeters; ++n) {
+		if (meters[n].width != width) {
+			delete meters[n].meter;
+			meters[n].meter = new FastMeter ((uint32_t) floor (_session.meter_hold()), width, FastMeter::Vertical);
+			meters[n].width = width;
+
+			meters[n].meter->add_events (GDK_BUTTON_RELEASE_MASK);
+			meters[n].meter->button_release_event.connect
+				(bind (slot (*this, &GainMeter::meter_button_release), n));
+			meters[n].meter->button_release_event.connect_after (slot (do_not_propagate));
+		}
+
+		meter_packer.pack_start (*meters[n].meter, false, false);
+		meters[n].meter->show_all ();
+		meters[n].packed = true;
+	}
+}	
+
+gint
+GainMeter::peak_button_release (GdkEventButton* ev)
+{
+	/* reset peak label */
+
+	if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
+		ResetAllPeakDisplays ();
+	} else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
+		Route* r;
+		if ((r = dynamic_cast<Route*> (&_io)) != 0) {
+			ResetGroupPeakDisplays (r->mix_group());
+		}
+	} else {
+		reset_peak_display ();
+	}
+	return TRUE;
+}
+
+void
+GainMeter::reset_peak_display ()
+{
+	max_peak = minus_infinity();
+	peak_display_label.set_text (_("-inf"));
+	peak_display.set_name ("MixerStripPeakDisplay");
+}
+
+void
+GainMeter::reset_group_peak_display (RouteGroup* group)
+{
+	Route* r;
+	if ((r = dynamic_cast<Route*> (&_io)) != 0) {
+		if (group == r->mix_group()) {
+			reset_peak_display ();
+		}
+	}
+}
+
+gint
+GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
+{
+	switch (ev->button) {
+	case 1:
+		meters[which].meter->clear();
+		max_peak = minus_infinity();
+		peak_display_label.set_text (_("-inf"));
+		peak_display.set_name ("MixerStripPeakDisplay");
+		break;
+
+	case 3:
+		// popup_meter_menu (ev);
+		break;
+	};
+
+	return TRUE;
+}
+
+void
+GainMeter::popup_meter_menu (GdkEventButton *ev)
+{
+	using namespace Menu_Helpers;
+
+	if (meter_menu == 0) {
+		meter_menu = new Gtk::Menu;
+		MenuList& items = meter_menu->items();
+
+		items.push_back (MenuElem ("-inf .. +0dBFS"));
+		items.push_back (MenuElem ("-10dB .. +0dBFS"));
+		items.push_back (MenuElem ("-4 .. +0dBFS"));
+		items.push_back (SeparatorElem());
+		items.push_back (MenuElem ("-inf .. -2dBFS"));
+		items.push_back (MenuElem ("-10dB .. -2dBFS"));
+		items.push_back (MenuElem ("-4 .. -2dBFS"));
+	}
+
+	meter_menu->popup (1, ev->time);
+}
+
+void
+GainMeter::_gain_printer (char buf[32], Gtk::Adjustment& adj, void *arg)
+{
+	static_cast<GainMeter *>(arg)->gain_printer (buf, adj);
+}
+
+void
+GainMeter::gain_printer (char buf[32], Gtk::Adjustment& adj)
+{
+	float v = adj.get_value();
+
+	if (v == 0.0) {
+		strcpy (buf, _("-inf"));
+	} else {
+		snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
+	}
+}
+
+void
+GainMeter::gain_adjusted ()
+{
+	if (!ignore_toggle) {
+		_io.set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
+	}
+}
+
+void
+GainMeter::effective_gain_display ()
+{
+	gfloat value = gain_to_slider_position (_io.effective_gain());
+	
+	if (gain_adjustment.get_value() != value) {
+		ignore_toggle = true;
+		gain_adjustment.set_value (value);
+		ignore_toggle = false;
+	}
+}
+
+void
+GainMeter::gain_changed (void *src)
+{
+	Gtkmmext::UI::instance()->call_slot (slot (*this, &GainMeter::effective_gain_display));
+}
+
+gint
+GainMeter::entry_focus_event (GdkEventFocus* ev)
+{
+	if (ev->in) {
+		ARDOUR_UI::instance()->allow_focus (true);
+	} else {
+		ARDOUR_UI::instance()->allow_focus (false);
+	}
+	return TRUE;
+}
+
+
+void
+GainMeter::set_meter_strip_name (string name)
+{
+	meter_metric_area.set_name (name);
+}
+
+void
+GainMeter::set_fader_name (string name)
+{
+	gain_slider->set_name (name);
+}
+
+void
+GainMeter::update_gain_sensitive ()
+{
+	static_cast<Gtkmmext::SliderController*>(gain_slider)->set_sensitive (!(_io.gain_automation_state() & Play));
+}
+
+
+static MeterPoint
+next_meter_point (MeterPoint mp)
+{
+	switch (mp) {
+	case MeterInput:
+		return MeterPreFader;
+		break;
+		
+	case MeterPreFader:
+		return MeterPostFader;
+		break;
+		
+	case MeterPostFader:
+		return MeterInput;
+		break;
+	}
+	/*NOTREACHED*/
+	return MeterInput;
+}
+
+gint
+GainMeter::meter_press(GdkEventButton* ev)
+{
+	Route* _route;
+
+	wait_for_release = false;
+
+	if ((_route = dynamic_cast<Route*>(&_io)) == 0) {
+		return FALSE;
+	}
+
+	if (!ignore_toggle) {
+
+		if (Keyboard::is_context_menu_event (ev)) {
+			
+			// no menu at this time.
+
+		} else {
+
+			if (ev->button == 2) {
+
+				// ctrl-button2 click is the midi binding click
+				// button2-click is "momentary"
+				
+				if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
+					wait_for_release = true;
+					old_meter_point = _route->meter_point ();
+				}
+			}
+
+			if (ev->button == 1 || ev->button == 2) {
+
+				if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
+
+					/* ctrl-shift-click applies change to all routes */
+
+					_session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
+					
+				} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
+
+					/* ctrl-click: solo mix group.
+					   ctrl-button2 is MIDI learn.
+					*/
+					
+					if (ev->button == 1) {
+						set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
+					}
+					
+				} else {
+					
+					/* click: solo this route */
+					
+					_route->set_meter_point (next_meter_point (_route->meter_point()), this);
+				}
+			}
+		}
+	}
+
+	return stop_signal (meter_point_button, "button-press-event");
+
+}
+
+gint
+GainMeter::meter_release(GdkEventButton* ev)
+{
+	if(!ignore_toggle){
+		if (wait_for_release){
+			wait_for_release = false;
+			set_meter_point (*(dynamic_cast<Route*>(&_io)), old_meter_point);
+			stop_signal (meter_point_button, "button-release-event");
+		}
+	}
+	return TRUE;
+}
+
+void
+GainMeter::set_meter_point (Route& route, MeterPoint mp)
+{
+	route.set_meter_point (mp, this);
+}
+
+void
+GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
+{
+	RouteGroup* mix_group;
+
+	if((mix_group = route.mix_group()) != 0){
+		mix_group->apply (&Route::set_meter_point, mp, this);
+	} else {
+		route.set_meter_point (mp, this);
+	}
+}
+
+void
+GainMeter::meter_changed (void *src)
+{
+	Route* r;
+
+	ENSURE_GUI_THREAD (bind (slot (*this, &GainMeter::meter_changed), src));
+
+	if ((r = dynamic_cast<Route*> (&_io)) != 0) {
+
+		switch (r->meter_point()) {
+		case MeterInput:
+			meter_point_label.set_text (_("input"));
+			break;
+			
+		case MeterPreFader:
+			meter_point_label.set_text (_("pre"));
+			break;
+			
+		case MeterPostFader:
+			meter_point_label.set_text (_("post"));
+			break;
+		}
+
+		setup_meters ();
+	}
+}
+
+void
+GainMeter::meter_point_clicked ()
+{
+	Route* r;
+
+	if ((r = dynamic_cast<Route*> (&_io)) != 0) {
+
+	}
+}
+
+gint
+GainMeter::start_gain_touch (GdkEventButton* ev)
+{
+	_io.start_gain_touch ();
+	return FALSE;
+}
+
+gint
+GainMeter::end_gain_touch (GdkEventButton* ev)
+{
+	_io.end_gain_touch ();
+	return FALSE;
+}