X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Faudio_mapping_view.cc;h=ad2722f81f3e84b90a053ddb7dd94b33f2410513;hb=eed0487aa9cd13faa45d8f79c777306fd85956b3;hp=0b28b12fb641201ca438c71fff61330951666f15;hpb=a79d78d8bb6d51f6662f1f63b9f8fd19e1a0c5f1;p=dcpomatic.git

diff --git a/src/wx/audio_mapping_view.cc b/src/wx/audio_mapping_view.cc
index 0b28b12fb..ad2722f81 100644
--- a/src/wx/audio_mapping_view.cc
+++ b/src/wx/audio_mapping_view.cc
@@ -1,349 +1,382 @@
 /*
-    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2019 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic 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,
+    DCP-o-matic 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.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
-#include <wx/wx.h>
-#include <wx/renderer.h>
-#include <wx/grid.h>
-#include <dcp/types.h>
-#include "lib/audio_mapping.h"
-#include "lib/util.h"
+/** @file  src/wx/audio_mapping_view.cc
+ *  @brief AudioMappingView class and helpers.
+ */
+
 #include "audio_mapping_view.h"
 #include "wx_util.h"
 #include "audio_gain_dialog.h"
+#include "lib/audio_mapping.h"
+#include "lib/util.h"
+#include <dcp/locale_convert.h>
+#include <dcp/types.h>
+#include <wx/wx.h>
+#include <wx/renderer.h>
+#include <wx/grid.h>
+#include <wx/graphics.h>
+#include <boost/foreach.hpp>
+#include <iostream>
 
 using std::cout;
 using std::list;
 using std::string;
+using std::min;
 using std::max;
+using std::vector;
+using std::pair;
+using std::make_pair;
 using boost::shared_ptr;
-using boost::lexical_cast;
+using boost::optional;
+using dcp::locale_convert;
 
-#define INDICATOR_SIZE 20
+#define INDICATOR_SIZE 16
+#define GRID_SPACING 24
+#define LEFT_WIDTH (GRID_SPACING * 3)
+#define TOP_HEIGHT (GRID_SPACING * 2)
 
 enum {
 	ID_off = 1,
 	ID_full = 2,
-	ID_minus3dB = 3,
+	ID_minus6dB = 3,
 	ID_edit = 4
 };
 
-class NoSelectionStringRenderer : public wxGridCellStringRenderer
+AudioMappingView::AudioMappingView (wxWindow* parent)
+	: wxScrolledWindow (parent, wxID_ANY)
+	, _menu_input (0)
+	, _menu_output (1)
 {
-public:
-	void Draw (wxGrid& grid, wxGridCellAttr& attr, wxDC& dc, const wxRect& rect, int row, int col, bool)
-	{
-		wxGridCellStringRenderer::Draw (grid, attr, dc, rect, row, col, false);
-	}
-};
+	_menu = new wxMenu;
+	_menu->Append (ID_off, _("Off"));
+	_menu->Append (ID_full, _("Full"));
+	_menu->Append (ID_minus6dB, _("-6dB"));
+	_menu->Append (ID_edit, _("Edit..."));
 
-class ValueRenderer : public wxGridCellRenderer
-{
-public:
-
-	void Draw (wxGrid& grid, wxGridCellAttr &, wxDC& dc, const wxRect& rect, int row, int col, bool)
-	{
-		LocaleGuard lg;
-	
-		dc.SetPen (*wxThePenList->FindOrCreatePen (wxColour (255, 255, 255), 1, wxPENSTYLE_SOLID));
-		dc.SetBrush (*wxTheBrushList->FindOrCreateBrush (wxColour (255, 255, 255), wxBRUSHSTYLE_SOLID));
-		dc.DrawRectangle (rect);
-
-		int const xo = (rect.GetWidth() - INDICATOR_SIZE) / 2;
-		int const yo = (rect.GetHeight() - INDICATOR_SIZE) / 2;
-
-		dc.SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxPENSTYLE_SOLID));
-		dc.SetBrush (*wxTheBrushList->FindOrCreateBrush (wxColour (255, 255, 255), wxBRUSHSTYLE_SOLID));
-		dc.DrawRectangle (wxRect (rect.GetLeft() + xo, rect.GetTop() + yo, INDICATOR_SIZE, INDICATOR_SIZE));
-
-		float const value = lexical_cast<float> (wx_to_std (grid.GetCellValue (row, col)));
-		float const value_dB = 20 * log10 (value);
-		int const range = 18;
-		int height = 0;
-		if (value_dB > -range) {
-			height = INDICATOR_SIZE * (1 + value_dB / range);
-		}
+	Bind (wxEVT_PAINT, boost::bind(&AudioMappingView::paint, this));
+	Bind (wxEVT_MENU, boost::bind(&AudioMappingView::off, this), ID_off);
+	Bind (wxEVT_LEFT_DOWN, boost::bind(&AudioMappingView::left_down, this, _1));
+	Bind (wxEVT_RIGHT_DOWN, boost::bind(&AudioMappingView::right_down, this, _1));
+	Bind (wxEVT_MOTION, boost::bind(&AudioMappingView::motion, this, _1));
+	Bind (wxEVT_MENU, boost::bind(&AudioMappingView::full, this), ID_full);
+	Bind (wxEVT_MENU, boost::bind(&AudioMappingView::minus6dB, this), ID_minus6dB);
+	Bind (wxEVT_MENU, boost::bind(&AudioMappingView::edit, this), ID_edit);
 
-		height = max (0, height);
-		
-		if (value > 0) {
-			/* Make sure we get a little bit of the marker if there is any gain */
-			height = max (3, height);
-		}
+	SetScrollRate (GRID_SPACING, GRID_SPACING);
+}
 
-		dc.SetBrush (*wxTheBrushList->FindOrCreateBrush (wxColour (0, 255, 0), wxBRUSHSTYLE_SOLID));
-		dc.DrawRectangle (wxRect (rect.GetLeft() + xo, rect.GetTop() + yo + INDICATOR_SIZE - height, INDICATOR_SIZE, height));
-	}
+void
+AudioMappingView::paint ()
+{
+	wxPaintDC dc (this);
 
-	wxSize GetBestSize (wxGrid &, wxGridCellAttr &, wxDC &, int, int)
-	{
-		return wxSize (INDICATOR_SIZE + 4, INDICATOR_SIZE + 4);
+	wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
+	if (!gc) {
+		return;
 	}
-	
-	wxGridCellRenderer* Clone () const
-	{
-		return new ValueRenderer;
+
+	int sx, sy;
+	GetViewStart (&sx, &sy);
+	gc->Translate (-sx * GRID_SPACING, -sy * GRID_SPACING);
+	dc.SetLogicalOrigin (sx * GRID_SPACING, sy * GRID_SPACING);
+
+	int const output_channels_width = _output_channels.size() * GRID_SPACING;
+	int const input_channels_height = _input_channels.size() * GRID_SPACING;
+
+	gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
+	wxGraphicsPath lines = gc->CreatePath ();
+	dc.SetFont (wxSWISS_FONT->Bold());
+	wxCoord label_width;
+	wxCoord label_height;
+
+	/* DCP label at the top */
+
+	dc.GetTextExtent (_("DCP"), &label_width, &label_height);
+	dc.DrawText (_("DCP"), LEFT_WIDTH + (output_channels_width - label_width) / 2, (GRID_SPACING - label_height) / 2);
+
+	/* Content label on the left */
+
+	dc.GetTextExtent (_("Content"), &label_width, &label_height);
+	dc.DrawRotatedText (
+		_("Content"),
+		(GRID_SPACING - label_height) / 2,
+		TOP_HEIGHT + (input_channels_height + label_width) / 2,
+		90
+		);
+
+	dc.SetFont (*wxSWISS_FONT);
+	gc->SetPen (*wxBLACK_PEN);
+
+	/* Column labels and some lines */
+
+	int N = 0;
+	BOOST_FOREACH (string i, _output_channels) {
+		dc.GetTextExtent (std_to_wx(i), &label_width, &label_height);
+		dc.DrawText (std_to_wx(i), LEFT_WIDTH + GRID_SPACING * N + (GRID_SPACING - label_width) / 2, GRID_SPACING + (GRID_SPACING - label_height) / 2);
+		lines.MoveToPoint    (LEFT_WIDTH + GRID_SPACING * N, GRID_SPACING);
+		lines.AddLineToPoint (LEFT_WIDTH + GRID_SPACING * N, TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
+		++N;
 	}
-};
+	lines.MoveToPoint    (LEFT_WIDTH + GRID_SPACING * N, GRID_SPACING);
+	lines.AddLineToPoint (LEFT_WIDTH + GRID_SPACING * N, TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
 
+	/* Horizontal lines at the top */
 
-AudioMappingView::AudioMappingView (wxWindow* parent)
-	: wxPanel (parent, wxID_ANY)
-	, _menu_row (0)
-	, _menu_column (1)
-	, _last_tooltip_row (0)
-	, _last_tooltip_column (0)
-{
-	_grid = new wxGrid (this, wxID_ANY);
+	lines.MoveToPoint (LEFT_WIDTH, GRID_SPACING);
+		lines.AddLineToPoint (LEFT_WIDTH + output_channels_width, GRID_SPACING);
+	lines.MoveToPoint (LEFT_WIDTH, GRID_SPACING * 2);
+		lines.AddLineToPoint (LEFT_WIDTH + output_channels_width, GRID_SPACING * 2);
 
-	_grid->CreateGrid (0, MAX_AUDIO_CHANNELS + 1);
-	_grid->HideRowLabels ();
-	_grid->DisableDragRowSize ();
-	_grid->DisableDragColSize ();
-	_grid->EnableEditing (false);
-	_grid->SetCellHighlightPenWidth (0);
-	_grid->SetDefaultRenderer (new NoSelectionStringRenderer);
+	/* Row channel labels */
 
-	set_column_labels ();
+	N = 0;
+	BOOST_FOREACH (string i, _input_channels) {
+		dc.GetTextExtent (std_to_wx(i), &label_width, &label_height);
+		dc.DrawText (std_to_wx(i), GRID_SPACING * 2 + (GRID_SPACING - label_width) / 2, TOP_HEIGHT + GRID_SPACING * N + (GRID_SPACING - label_height) / 2);
+		lines.MoveToPoint (GRID_SPACING * 2, TOP_HEIGHT + GRID_SPACING * N);
+		lines.AddLineToPoint (LEFT_WIDTH + output_channels_width, TOP_HEIGHT + GRID_SPACING * N);
+		++N;
+	}
+	lines.MoveToPoint (GRID_SPACING * 2, TOP_HEIGHT + GRID_SPACING * N);
+	lines.AddLineToPoint (LEFT_WIDTH + output_channels_width, TOP_HEIGHT + GRID_SPACING * N);
 
-	_sizer = new wxBoxSizer (wxVERTICAL);
-	_sizer->Add (_grid, 1, wxEXPAND | wxALL);
-	SetSizerAndFit (_sizer);
+	/* Vertical lines on the left */
 
-	Bind (wxEVT_GRID_CELL_LEFT_CLICK, boost::bind (&AudioMappingView::left_click, this, _1));
-	Bind (wxEVT_GRID_CELL_RIGHT_CLICK, boost::bind (&AudioMappingView::right_click, this, _1));
-	_grid->GetGridWindow()->Bind (wxEVT_MOTION, boost::bind (&AudioMappingView::mouse_moved, this, _1));
+	for (int i = 1; i < 3; ++i) {
+		lines.MoveToPoint    (GRID_SPACING * i, TOP_HEIGHT);
+		lines.AddLineToPoint (GRID_SPACING * i, TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
+	}
 
-	_menu = new wxMenu;
-	_menu->Append (ID_off, _("Off"));
-	_menu->Append (ID_full, _("Full"));
-	_menu->Append (ID_minus3dB, _("-3dB"));
-	_menu->Append (ID_edit, _("Edit..."));
+	/* Group labels and lines */
+
+	int y = TOP_HEIGHT;
+	BOOST_FOREACH (Group i, _input_groups) {
+		dc.GetTextExtent (std_to_wx(i.name), &label_width, &label_height);
+		int const height = (i.to - i.from + 1) * GRID_SPACING;
+		dc.DrawRotatedText (
+			std_to_wx(i.name),
+			GRID_SPACING + (GRID_SPACING - label_height) / 2,
+			y + (height + label_width) / 2,
+			90
+			);
+		lines.MoveToPoint    (GRID_SPACING,     y);
+		lines.AddLineToPoint (GRID_SPACING * 2, y);
+		y += height;
+	}
+
+	lines.MoveToPoint    (GRID_SPACING,     y);
+	lines.AddLineToPoint (GRID_SPACING * 2, y);
+
+	gc->StrokePath (lines);
+
+	/* Indicators */
+
+	for (size_t x = 0; x < _output_channels.size(); ++x) {
+		for (size_t y = 0; y < _input_channels.size(); ++y) {
+			dc.SetBrush (*wxWHITE_BRUSH);
+			dc.DrawRectangle (
+				wxRect(
+					LEFT_WIDTH + x * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2,
+					TOP_HEIGHT + y * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2,
+					INDICATOR_SIZE, INDICATOR_SIZE
+					)
+				);
+
+			float const value_dB = 20 * log10 (_map.get(y, x));
+			int const range = 18;
+			int height = 0;
+			if (value_dB > -range) {
+				height = INDICATOR_SIZE * (1 + value_dB / range);
+			}
+
+			dc.SetBrush (*wxTheBrushList->FindOrCreateBrush(wxColour (0, 255, 0), wxBRUSHSTYLE_SOLID));
+			dc.DrawRectangle (
+				wxRect(
+					LEFT_WIDTH + x * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2,
+					TOP_HEIGHT + y * GRID_SPACING + (GRID_SPACING - INDICATOR_SIZE) / 2 + INDICATOR_SIZE - height,
+					INDICATOR_SIZE, height
+					)
+				);
+		}
+	}
 
-	Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&AudioMappingView::off, this), ID_off);
-	Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&AudioMappingView::full, this), ID_full);
-	Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&AudioMappingView::minus3dB, this), ID_minus3dB);
-	Bind (wxEVT_COMMAND_MENU_SELECTED, boost::bind (&AudioMappingView::edit, this), ID_edit);
+	delete gc;
 }
 
-void
-AudioMappingView::map_changed ()
+optional<pair<int, int> >
+AudioMappingView::mouse_event_to_channels (wxMouseEvent& ev) const
 {
-	update_cells ();
-	Changed (_map);
-	_last_tooltip_column = -1;
-}	
+	int sx, sy;
+	GetViewStart (&sx, &sy);
+	int const x = ev.GetX() + sx * GRID_SPACING;
+	int const y = ev.GetY() + sy * GRID_SPACING;
+
+	if (x <= LEFT_WIDTH || y < TOP_HEIGHT) {
+		return optional<pair<int, int> >();
+	}
+
+	int const input = (y - TOP_HEIGHT) / GRID_SPACING;
+	int const output = (x - LEFT_WIDTH) / GRID_SPACING;
+
+	if (input >= int(_input_channels.size()) || output >= int(_output_channels.size())) {
+		return optional<pair<int, int> >();
+	}
+
+	return make_pair (input, output);
+}
 
 void
-AudioMappingView::left_click (wxGridEvent& ev)
+AudioMappingView::left_down (wxMouseEvent& ev)
 {
-	if (ev.GetCol() == 0) {
+	optional<pair<int, int> > channels = mouse_event_to_channels (ev);
+	if (!channels) {
 		return;
 	}
 
-	dcp::Channel d = static_cast<dcp::Channel> (ev.GetCol() - 1);
-	
-	if (_map.get (ev.GetRow(), d) > 0) {
-		_map.set (ev.GetRow(), d, 0);
+	if (_map.get(channels->first, channels->second) > 0) {
+		_map.set (channels->first, channels->second, 0);
 	} else {
-		_map.set (ev.GetRow(), d, 1);
+		_map.set (channels->first, channels->second, 1);
 	}
 
-	map_changed ();
+	map_values_changed ();
 }
 
 void
-AudioMappingView::right_click (wxGridEvent& ev)
+AudioMappingView::right_down (wxMouseEvent& ev)
 {
-	if (ev.GetCol() == 0) {
+	optional<pair<int, int> > channels = mouse_event_to_channels (ev);
+	if (!channels) {
 		return;
 	}
 
-	_menu_row = ev.GetRow ();
-	_menu_column = ev.GetCol ();
-	PopupMenu (_menu, ev.GetPosition ());
+	_menu_input = channels->first;
+	_menu_output = channels->second;
+	PopupMenu (_menu, ev.GetPosition());
+}
+
+/** Called when any gain value has changed */
+void
+AudioMappingView::map_values_changed ()
+{
+	Changed (_map);
+	_last_tooltip_channels = optional<pair<int, int> >();
+	Refresh ();
 }
 
 void
 AudioMappingView::off ()
 {
-	_map.set (_menu_row, static_cast<dcp::Channel> (_menu_column - 1), 0);
-	map_changed ();
+	_map.set (_menu_input, _menu_output, 0);
+	map_values_changed ();
 }
 
 void
 AudioMappingView::full ()
 {
-	_map.set (_menu_row, static_cast<dcp::Channel> (_menu_column - 1), 1);
-	map_changed ();
+	_map.set (_menu_input, _menu_output, 1);
+	map_values_changed ();
 }
 
 void
-AudioMappingView::minus3dB ()
+AudioMappingView::minus6dB ()
 {
-	_map.set (_menu_row, static_cast<dcp::Channel> (_menu_column - 1), 1 / sqrt (2));
-	map_changed ();
+	_map.set (_menu_input, _menu_output, pow (10, -6.0 / 20));
+	map_values_changed ();
 }
 
 void
 AudioMappingView::edit ()
 {
-	dcp::Channel d = static_cast<dcp::Channel> (_menu_column - 1);
-	
-	AudioGainDialog* dialog = new AudioGainDialog (this, _menu_row, _menu_column - 1, _map.get (_menu_row, d));
-	if (dialog->ShowModal () == wxID_OK) {
-		_map.set (_menu_row, d, dialog->value ());
-		map_changed ();
+	int const d = _menu_output - 1;
+
+	AudioGainDialog* dialog = new AudioGainDialog (this, _menu_input, _menu_output - 1, _map.get(_menu_input, d));
+	if (dialog->ShowModal() == wxID_OK) {
+		_map.set (_menu_input, d, dialog->value ());
+		map_values_changed ();
 	}
-	
+
 	dialog->Destroy ();
 }
 
 void
-AudioMappingView::set (AudioMapping map)
+AudioMappingView::set_virtual_size ()
 {
-	_map = map;
-	update_cells ();
+	SetVirtualSize (LEFT_WIDTH + _output_channels.size() * GRID_SPACING, TOP_HEIGHT + _input_channels.size() * GRID_SPACING);
 }
 
 void
-AudioMappingView::update_cells ()
+AudioMappingView::set (AudioMapping map)
 {
-	LocaleGuard lg;
-	
-	if (_grid->GetNumberRows ()) {
-		_grid->DeleteRows (0, _grid->GetNumberRows ());
-	}
-
-	_grid->InsertRows (0, _map.content_channels ());
-
-	for (int i = 0; i < _map.content_channels(); ++i) {
-		for (int j = 0; j < MAX_AUDIO_CHANNELS; ++j) {
-			_grid->SetCellRenderer (i, j + 1, new ValueRenderer);
-		}
-	}
-	
-	for (int i = 0; i < _map.content_channels(); ++i) {
-		_grid->SetCellValue (i, 0, wxString::Format (wxT("%d"), i + 1));
-
-		for (int j = 1; j < _grid->GetNumberCols(); ++j) {
-			_grid->SetCellValue (i, j, std_to_wx (lexical_cast<string> (_map.get (i, static_cast<dcp::Channel> (j - 1)))));
-		}
-	}
-
-	_grid->AutoSize ();
+	_map = map;
+	Refresh ();
 }
 
-/** @param c Number of DCP channels */
 void
-AudioMappingView::set_channels (int c)
+AudioMappingView::set_input_channels (vector<string> const & names)
 {
-	c++;
-
-	if (c < _grid->GetNumberCols ()) {
-		_grid->DeleteCols (c, _grid->GetNumberCols() - c);
-	} else if (c > _grid->GetNumberCols ()) {
-		_grid->InsertCols (_grid->GetNumberCols(), c - _grid->GetNumberCols());
-		set_column_labels ();
-	}
-
-	update_cells ();
+	_input_channels = names;
+	set_virtual_size ();
+	Refresh ();
 }
 
 void
-AudioMappingView::set_column_labels ()
+AudioMappingView::set_output_channels (vector<string> const & names)
 {
-	int const c = _grid->GetNumberCols ();
-	
-	_grid->SetColLabelValue (0, _("Content channel"));
-
-#if MAX_AUDIO_CHANNELS != 8
-#warning AudioMappingView::set_column_labels() is expecting the wrong MAX_AUDIO_CHANNELS
-#endif	
-	
-	if (c > 0) {
-		_grid->SetColLabelValue (1, _("L"));
-	}
-	
-	if (c > 1) {
-		_grid->SetColLabelValue (2, _("R"));
-	}
-	
-	if (c > 2) {
-		_grid->SetColLabelValue (3, _("C"));
-	}
-	
-	if (c > 3) {
-		_grid->SetColLabelValue (4, _("Lfe"));
-	}
-	
-	if (c > 4) {
-		_grid->SetColLabelValue (5, _("Ls"));
-	}
-	
-	if (c > 5) {
-		_grid->SetColLabelValue (6, _("Rs"));
-	}
-
-	if (c > 6) {
-		_grid->SetColLabelValue (7, _("HI"));
-	}
-
-	if (c > 7) {
-		_grid->SetColLabelValue (8, _("VI"));
-	}
-	
-	_grid->AutoSize ();
+	_output_channels = names;
+	set_virtual_size ();
+	Refresh ();
 }
 
 void
-AudioMappingView::mouse_moved (wxMouseEvent& ev)
+AudioMappingView::motion (wxMouseEvent& ev)
 {
-	int xx;
-	int yy;
-	_grid->CalcUnscrolledPosition (ev.GetX(), ev.GetY(), &xx, &yy);
-
-	int const row = _grid->YToRow (yy);
-	int const column = _grid->XToCol (xx);
-
-	if (row < 0 || column < 1) {
-		_grid->GetGridWindow()->SetToolTip ("");
-		_last_tooltip_row = row;
-		_last_tooltip_column = column;
+	optional<pair<int, int> > channels = mouse_event_to_channels (ev);
+	if (!channels) {
+		SetToolTip ("");
+		_last_tooltip_channels = channels;
+		return;
 	}
 
-	if (row != _last_tooltip_row || column != _last_tooltip_column) {
-
+	if (channels != _last_tooltip_channels) {
 		wxString s;
-		float const gain = _map.get (row, static_cast<dcp::Channel> (column - 1));
+		float const gain = _map.get(channels->first, channels->second);
 		if (gain == 0) {
-			s = wxString::Format (_("No audio will be passed from content channel %d to DCP channel %d."), row + 1, column);
+			s = wxString::Format (_("No audio will be passed from content channel %d to DCP channel %d."), channels->first, channels->second);
 		} else if (gain == 1) {
-			s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d unaltered."), row + 1, column);
+			s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d unaltered."), channels->first, channels->second);
 		} else {
 			float const dB = 20 * log10 (gain);
-			s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d with gain %.1fdB."), row + 1, column, dB);
+			s = wxString::Format (_("Audio will be passed from content channel %d to DCP channel %d with gain %.1fdB."), channels->first, channels->second, dB);
 		}
-		
-		_grid->GetGridWindow()->SetToolTip (s + " " + _("Right click to change gain."));
-		_last_tooltip_row = row;
-		_last_tooltip_column = column;
+
+		SetToolTip (s + " " + _("Right click to change gain."));
+		_last_tooltip_channels = channels;
 	}
 
         ev.Skip ();
 }
+
+void
+AudioMappingView::set_input_groups (vector<Group> const & groups)
+{
+	_input_groups = groups;
+}