Initial import of gtk2_ardour.

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

1 files changed, 803 insertions, 0 deletions

diff --git a/gtk2_ardour/time_axis_view.cc b/gtk2_ardour/time_axis_view.cc
new file mode 100644
index 0000000000..b0573714ad
--- /dev/null
+++ b/gtk2_ardour/time_axis_view.cc
@@ -0,0 +1,803 @@
+/*
+    Copyright (C) 2000 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 <cstdlib>
+#include <cmath>
+#include <algorithm>
+#include <string>
+#include <list>
+
+#include <pbd/error.h>
+
+#include <gtkmmext/utils.h>
+#include <gtkmmext/selector.h>
+#include <gtkmmext/stop_signal.h>
+
+#include <ardour/session.h>
+#include <ardour/utils.h>
+#include <ardour/ladspa_plugin.h>
+#include <ardour/insert.h>
+#include <ardour/location.h>
+
+#include "ardour_ui.h"
+#include "public_editor.h"
+#include "time_axis_view.h"
+#include "canvas-simplerect.h"
+#include "selection.h"
+#include "keyboard.h"
+#include "rgb_macros.h"
+
+#include "i18n.h"
+
+using namespace Gtk;
+using namespace SigC;
+using namespace ARDOUR;
+using namespace Editing;
+
+const double trim_handle_size = 6.0; /* pixels */
+
+TimeAxisView::TimeAxisView(ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Gtk::Widget *canvas) 
+	: AxisView(sess), 
+	  editor(ed),
+	  controls_table (2, 9)
+{
+	canvas_display = gtk_canvas_item_new (gtk_canvas_root(GTK_CANVAS(canvas->gtkobj())),
+					      gtk_canvas_group_get_type(),
+					      "x", 0.0,
+					      "y", 0.0,
+					      NULL);
+
+	selection_group = gtk_canvas_item_new (GTK_CANVAS_GROUP(canvas_display), 
+					       gtk_canvas_group_get_type (), 
+					       NULL);
+	gtk_canvas_item_hide (selection_group);
+	
+   	control_parent = 0;
+	display_menu = 0;
+	size_menu = 0;
+	_marked_for_display = false;
+	_hidden = false;
+	height = 0;
+	effective_height = 0;
+	parent = rent;
+	_has_state = false;
+
+	/*
+	  Create the standard LHS Controls
+	  We create the top-level container and name add the name label here,
+	  subclasses can add to the layout as required
+	*/
+
+	name_entry.set_name ("EditorTrackNameDisplay");
+	name_entry.button_release_event.connect (slot (*this, &TimeAxisView::name_entry_button_release));
+	name_entry.button_press_event.connect (slot (*this, &TimeAxisView::name_entry_button_press));
+	
+	name_entry.focus_in_event.connect (slot (ARDOUR_UI::generic_focus_in_event));
+	name_entry.focus_out_event.connect (slot (ARDOUR_UI::generic_focus_out_event));
+
+	Gtkmmext::set_usize_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
+
+	name_label.set_name ("TrackLabel");
+	name_label.set_alignment (0.0, 0.5);
+
+	// name_hbox.set_border_width (2);
+	// name_hbox.set_spacing (5);
+
+	/* typically, either name_label OR name_entry are visible,
+	   but not both. its up to derived classes to show/hide them as they
+	   wish.
+	*/
+
+	name_hbox.pack_start (name_label, true, true);
+	name_hbox.pack_start (name_entry, true, true);
+	name_hbox.show ();
+
+	controls_table.set_border_width (2);
+	controls_table.set_row_spacings (0);
+	controls_table.set_col_spacings (0);
+	controls_table.set_homogeneous (true);
+	controls_table.show ();
+
+	controls_table.attach (name_hbox, 0, 5, 0, 1, GTK_FILL|GTK_EXPAND, GTK_FILL|GTK_EXPAND);
+
+	controls_table.show ();
+
+	controls_vbox.pack_start (controls_table, false, false);
+	controls_vbox.show ();
+
+	controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
+	controls_ebox.add (controls_vbox);
+	controls_ebox.add_events (GDK_BUTTON_PRESS_MASK|GDK_BUTTON_RELEASE_MASK);
+	controls_ebox.set_flags (GTK_CAN_FOCUS);
+
+	controls_ebox.button_release_event.connect (slot (*this, &TimeAxisView::controls_ebox_button_release));
+	
+	controls_lhs_pad.set_name ("TimeAxisViewControlsPadding");
+	controls_hbox.pack_start (controls_lhs_pad,false,false);
+	controls_hbox.pack_start (controls_ebox,true,true);
+	controls_hbox.show ();
+
+	controls_frame.add (controls_hbox);
+	controls_frame.set_name ("TimeAxisViewControlsBaseUnselected");
+	controls_frame.set_shadow_type (GTK_SHADOW_OUT);
+}
+
+TimeAxisView::~TimeAxisView()
+{
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		delete *i;
+	}
+
+	for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
+		gtk_object_destroy (GTK_OBJECT((*i)->rect));
+		gtk_object_destroy (GTK_OBJECT((*i)->start_trim));
+		gtk_object_destroy (GTK_OBJECT((*i)->end_trim));
+	}
+
+	for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
+		gtk_object_destroy (GTK_OBJECT((*i)->rect));
+		gtk_object_destroy (GTK_OBJECT((*i)->start_trim));
+		gtk_object_destroy (GTK_OBJECT((*i)->end_trim));
+	}
+
+	if (selection_group) {
+		gtk_object_destroy (GTK_OBJECT (selection_group));
+		selection_group = 0;
+	}
+
+	if (canvas_display) {
+		gtk_object_destroy (GTK_OBJECT (canvas_display));	
+		canvas_display = 0;
+	}
+
+	if (display_menu) {
+		delete display_menu;
+		display_menu = 0;
+	}
+
+	if (size_menu) {
+		delete size_menu;
+		size_menu = 0;
+	}
+}
+
+guint32
+TimeAxisView::show_at (double y, int& nth, VBox *parent)
+{
+	gdouble ix1, ix2, iy1, iy2;
+	effective_height = 0;
+
+	if (control_parent) {
+		control_parent->reorder_child (controls_frame, nth);
+	} else {
+		control_parent = parent;
+		parent->pack_start (controls_frame, false, false);
+		parent->reorder_child (controls_frame, nth);
+	}
+
+	controls_frame.show ();
+	controls_ebox.show ();
+
+	/* the coordinates used here are in the system of the
+	   item's parent ...
+	*/
+
+	gtk_canvas_item_get_bounds (canvas_display, &ix1, &iy1, &ix2, &iy2);
+	gtk_canvas_item_i2w (canvas_display->parent, &ix1, &iy1);
+	if (iy1 < 0) {
+		iy1 = 0;
+	}
+	gtk_canvas_item_move (canvas_display, 0.0, y - iy1);
+	gtk_canvas_item_show (canvas_display); /* XXX not necessary */
+
+	y_position = y;
+	order = nth;
+	_hidden = false;
+	
+	effective_height = height;
+
+	/* now show children */
+	
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		
+		if ((*i)->marked_for_display()) {
+			gtk_canvas_item_show ((*i)->canvas_display);
+		}
+		
+		if (GTK_OBJECT_FLAGS(GTK_OBJECT((*i)->canvas_display)) & GTK_CANVAS_ITEM_VISIBLE) {
+			++nth;
+			effective_height += (*i)->show_at (y + effective_height, nth, parent);
+		}
+	}
+
+	return effective_height;
+}
+
+gint
+TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
+{
+	switch (ev->button) {
+	case 1:
+		selection_click (ev);
+		break;
+
+	case 3:
+		popup_display_menu (ev->time);
+		break;
+
+	case 4:
+		if (Keyboard::no_modifier_keys_pressed (ev)) {
+			editor.scroll_tracks_up_line ();
+		} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
+			step_height (true);
+		}
+		break;
+
+	case 5:
+		if (Keyboard::no_modifier_keys_pressed (ev)) {
+			editor.scroll_tracks_down_line ();
+		} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
+			step_height (false);
+		}
+		break;
+		
+
+	}
+
+	return TRUE;
+}
+
+void
+TimeAxisView::selection_click (GdkEventButton* ev)
+{
+	if (Keyboard::modifier_state_contains (ev->state, Keyboard::Shift)) {
+
+		if (editor.get_selection().selected (this)) {
+			editor.get_selection().remove (this);
+		} else {
+			editor.get_selection().add (this);
+		}
+
+	} else {
+
+		editor.get_selection().set (this);
+	}
+}
+
+void
+TimeAxisView::hide ()
+{
+	if (_hidden) {
+		return;
+	}
+
+	gtk_canvas_item_hide (canvas_display);
+	controls_frame.hide ();
+
+	if (control_parent) {
+		control_parent->remove (controls_frame);
+		control_parent = 0;
+	}
+
+	y_position = -1;
+	_hidden = true;
+	
+	/* now hide children */
+	
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->hide ();
+	}
+	
+	Hiding ();
+}
+
+void
+TimeAxisView::step_height (bool bigger)
+{
+	switch (height) {
+	case Largest:
+		if (!bigger) set_height (Large);
+		break;
+	case Large:
+		if (bigger) set_height (Largest);
+		else set_height (Larger);
+		break;
+	case Larger:
+		if (bigger) set_height (Large);
+		else set_height (Normal);
+		break;
+	case Normal:
+		if (bigger) set_height (Larger);
+		else set_height (Smaller);
+		break;
+	case Smaller:
+		if (bigger) set_height (Normal);
+		else set_height (Small);
+		break;
+	case Small:
+		if (bigger) set_height (Smaller);
+		break;
+	}
+}
+
+
+void
+TimeAxisView::set_height (TrackHeight h)
+{
+	height = (guint32) h;
+	controls_frame.set_usize (-1, height);
+
+ 	if (GTK_OBJECT_FLAGS(GTK_OBJECT(selection_group)) & GTK_CANVAS_ITEM_VISIBLE) {
+		/* resize the selection rect */
+		show_selection (editor.get_selection().time);
+	}
+
+//	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+//		(*i)->set_height (h);
+//	}
+
+}
+
+
+gint
+TimeAxisView::name_entry_button_press (GdkEventButton *ev)
+{
+	if (ev->button == 3) {
+		return do_not_propagate (ev);
+	}
+	return FALSE;
+}
+
+gint
+TimeAxisView::name_entry_button_release (GdkEventButton *ev)
+{
+	if (ev->button == 3) {
+		popup_display_menu (ev->time);
+		return stop_signal (name_entry, "button_release_event");
+	}
+	return FALSE;
+}
+
+void
+TimeAxisView::popup_display_menu (guint32 when)
+{
+	if (display_menu == 0) {
+		build_display_menu ();
+	}
+	display_menu->popup (1, when);	
+}
+
+gint
+TimeAxisView::size_click (GdkEventButton *ev)
+{
+	popup_size_menu (ev->time);
+	return TRUE;
+}
+
+void
+TimeAxisView::popup_size_menu (guint32 when)
+{
+	if (size_menu == 0) {
+		build_size_menu ();
+	}
+	size_menu->popup (1, when);
+}
+
+void
+TimeAxisView::set_selected (bool yn)
+{
+	AxisView::set_selected (yn);
+
+	if (_selected) {
+		controls_ebox.set_name (controls_base_selected_name);
+		controls_frame.set_name (controls_base_selected_name);
+
+		/* propagate any existing selection, if the mode is right */
+
+		if (editor.current_mouse_mode() == Editing::MouseRange && !editor.get_selection().time.empty()) {
+			show_selection (editor.get_selection().time);
+		}
+
+	} else {
+		controls_ebox.set_name (controls_base_unselected_name);
+		controls_frame.set_name (controls_base_unselected_name);
+
+		hide_selection ();
+
+		/* children will be set for the yn=true case. but when deselecting
+		   the editor only has a list of top-level trackviews, so we
+		   have to do this here.
+		*/
+
+		for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+			(*i)->set_selected (false);
+		}
+
+		
+	}
+}
+
+void
+TimeAxisView::build_size_menu ()
+{
+	using namespace Menu_Helpers;
+
+	size_menu = new Menu;
+	size_menu->set_name ("ArdourContextMenu");
+	MenuList& items = size_menu->items();
+	
+	items.push_back (MenuElem (_("Largest"), bind (slot (*this, &TimeAxisView::set_height), Largest)));
+	items.push_back (MenuElem (_("Large"), bind (slot (*this, &TimeAxisView::set_height), Large)));
+	items.push_back (MenuElem (_("Larger"), bind (slot (*this, &TimeAxisView::set_height), Larger)));
+	items.push_back (MenuElem (_("Normal"), bind (slot (*this, &TimeAxisView::set_height), Normal)));
+	items.push_back (MenuElem (_("Smaller"), bind (slot (*this, &TimeAxisView::set_height), Smaller)));
+	items.push_back (MenuElem (_("Small"), bind (slot (*this, &TimeAxisView::set_height), Small)));
+}
+
+void
+TimeAxisView::build_display_menu ()
+{
+	using namespace Menu_Helpers;
+
+	display_menu = new Menu;
+	display_menu->set_name ("ArdourContextMenu");
+
+	// Just let implementing classes define what goes into the manu
+}
+
+void
+TimeAxisView::set_samples_per_unit (double spu)
+{
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->set_samples_per_unit (spu);
+	}
+}
+
+void
+TimeAxisView::show_timestretch (jack_nframes_t start, jack_nframes_t end)
+{
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->show_timestretch (start, end);
+	}
+}
+
+void
+TimeAxisView::hide_timestretch ()
+{
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->hide_timestretch ();
+	}
+}
+
+void
+TimeAxisView::show_selection (TimeSelection& ts)
+{
+	double x1;
+	double x2;
+	double y2;
+	SelectionRect *rect;
+
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->show_selection (ts);
+	}
+
+	if (GTK_OBJECT_FLAGS(GTK_OBJECT(selection_group)) & GTK_CANVAS_ITEM_VISIBLE) {
+		while (!used_selection_rects.empty()) {
+			free_selection_rects.push_front (used_selection_rects.front());
+			used_selection_rects.pop_front();
+			gtk_canvas_item_hide (free_selection_rects.front()->rect);
+			gtk_canvas_item_hide (free_selection_rects.front()->start_trim);
+			gtk_canvas_item_hide (free_selection_rects.front()->end_trim);
+		}
+		gtk_canvas_item_hide (selection_group);
+	}
+
+	gtk_canvas_item_show (selection_group);
+	gtk_canvas_item_raise_to_top (selection_group);
+	
+	for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
+		jack_nframes_t start, end, cnt;
+
+		start = (*i).start;
+		end = (*i).end;
+		cnt = end - start + 1;
+
+		rect = get_selection_rect ((*i).id);
+		
+		x1 = start / editor.get_current_zoom();
+		x2 = (start + cnt - 1) / editor.get_current_zoom();
+		y2 = height;
+
+		gtk_object_set (GTK_OBJECT(rect->rect), 
+				"x1", x1,
+				"y1", 1.0,
+				"x2", x2,
+				"y2", y2,
+				NULL);
+		
+		// trim boxes are at the top for selections
+		
+		if (x2 > x1) {
+			gtk_object_set (GTK_OBJECT(rect->start_trim), 
+					"x1", x1,
+					"y1", 1.0,
+					"x2", x1 + trim_handle_size,
+					"y2", 1.0 + trim_handle_size,
+					NULL);
+			gtk_object_set (GTK_OBJECT(rect->end_trim), 
+					"x1", x2 - trim_handle_size,
+					"y1", 1.0,
+					"x2", x2,
+					"y2", 1.0 + trim_handle_size,
+					NULL);
+			gtk_canvas_item_show (rect->start_trim);
+			gtk_canvas_item_show (rect->end_trim);
+		} else {
+			gtk_canvas_item_hide (rect->start_trim);
+			gtk_canvas_item_hide (rect->end_trim);
+		}
+
+		gtk_canvas_item_show (rect->rect);
+		used_selection_rects.push_back (rect);
+	}
+}
+
+void
+TimeAxisView::reshow_selection (TimeSelection& ts)
+{
+	show_selection (ts);
+
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->show_selection (ts);
+	}
+}
+
+void
+TimeAxisView::hide_selection ()
+{
+	if (GTK_OBJECT_FLAGS(GTK_OBJECT(selection_group)) & GTK_CANVAS_ITEM_VISIBLE) {
+		while (!used_selection_rects.empty()) {
+			free_selection_rects.push_front (used_selection_rects.front());
+			used_selection_rects.pop_front();
+			gtk_canvas_item_hide (free_selection_rects.front()->rect);
+			gtk_canvas_item_hide (free_selection_rects.front()->start_trim);
+			gtk_canvas_item_hide (free_selection_rects.front()->end_trim);
+		}
+		gtk_canvas_item_hide (selection_group);
+	}
+	
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->hide_selection ();
+	}
+}
+
+void
+TimeAxisView::order_selection_trims (GtkCanvasItem *item, bool put_start_on_top)
+{
+	/* find the selection rect this is for. we have the item corresponding to one
+	   of the trim handles.
+	 */
+
+	for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
+		if ((*i)->start_trim == item || (*i)->end_trim == item) {
+
+			/* make one trim handle be "above" the other so that if they overlap,
+			   the top one is the one last used.
+			*/
+
+			gtk_canvas_item_raise_to_top ((*i)->rect);
+			gtk_canvas_item_raise_to_top (put_start_on_top ? (*i)->start_trim : (*i)->end_trim);
+			gtk_canvas_item_raise_to_top (put_start_on_top ? (*i)->end_trim : (*i)->start_trim);
+
+			break;
+		}
+	}
+}
+
+SelectionRect *
+TimeAxisView::get_selection_rect (uint32_t id)
+{
+	SelectionRect *rect;
+
+	/* check to see if we already have a visible rect for this particular selection ID */
+
+	for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
+		if ((*i)->id == id) {
+			return (*i);
+		}
+	}
+
+	/* ditto for the free rect list */
+
+	for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
+		if ((*i)->id == id) {
+			free_selection_rects.erase (i);
+			return (*i);
+		}
+	}
+
+	/* no existing matching rect, so go get a new one from the free list, or create one if there are none */
+	
+	if (free_selection_rects.empty()) {
+
+		rect = new SelectionRect;
+
+		rect->rect = gtk_canvas_item_new (GTK_CANVAS_GROUP(selection_group),
+						  gtk_canvas_simplerect_get_type(),
+						  "x1", 0.0,
+						  "y1", 0.0,
+						  "x2", 0.0,
+						  "y2", 0.0,
+						  "fill_color_rgba", color_map[cSelectionRectFill],
+						  "outline_color_rgba" , color_map[cSelectionRectOutline],
+						  NULL);
+		
+		
+		rect->start_trim = gtk_canvas_item_new (GTK_CANVAS_GROUP(selection_group),
+							    gtk_canvas_simplerect_get_type(),
+							    "x1", (gdouble) 0.0,
+							    "x2", (gdouble) 0.0,
+							    "fill_color_rgba" , color_map[cSelectionStartFill],
+							    "outline_color_rgba" , color_map[cSelectionStartOutline],
+							    NULL);
+		
+		rect->end_trim = gtk_canvas_item_new (GTK_CANVAS_GROUP(selection_group),
+							  gtk_canvas_simplerect_get_type(),
+							  "x1", 0.0,
+							  "x2", 0.0,
+							  "fill_color_rgba" , color_map[cSelectionEndFill],
+							  "outline_color_rgba" , color_map[cSelectionEndOutline],
+							  NULL);
+		free_selection_rects.push_front (rect);
+
+		gtk_signal_connect (GTK_OBJECT(rect->rect), "event",
+				    (GtkSignalFunc) PublicEditor::canvas_selection_rect_event,
+				    &editor);
+		gtk_signal_connect (GTK_OBJECT(rect->start_trim), "event",
+				    (GtkSignalFunc) PublicEditor::canvas_selection_start_trim_event,
+				    &editor);
+		gtk_signal_connect (GTK_OBJECT(rect->end_trim), "event",
+				    (GtkSignalFunc) PublicEditor::canvas_selection_end_trim_event,
+				    &editor);
+
+		gtk_object_set_data(GTK_OBJECT(rect->rect), "rect", rect);
+		gtk_object_set_data(GTK_OBJECT(rect->start_trim), "rect", rect);
+		gtk_object_set_data(GTK_OBJECT(rect->end_trim), "rect", rect);
+	} 
+
+	rect = free_selection_rects.front();
+	rect->id = id;
+	free_selection_rects.pop_front();
+	return rect;
+}
+
+bool
+TimeAxisView::is_child (TimeAxisView* tav)
+{
+	return find (children.begin(), children.end(), tav) != children.end();
+}
+
+void
+TimeAxisView::add_child (TimeAxisView* child)
+{
+	children.push_back (child);
+}
+
+void
+TimeAxisView::remove_child (TimeAxisView* child)
+{
+	vector<TimeAxisView*>::iterator i;
+
+	if ((i = find (children.begin(), children.end(), child)) != children.end()) {
+		children.erase (i);
+	}
+}
+
+void
+TimeAxisView::get_selectables (jack_nframes_t start, jack_nframes_t end, double top, double bot, list<Selectable*>& result)
+{
+	return;
+}
+
+void
+TimeAxisView::get_inverted_selectables (Selection& sel, list<Selectable*>& result)
+{
+	return;
+}
+
+bool
+TimeAxisView::touched (double top, double bot)
+{
+	/* remember: this is X Window - coordinate space starts in upper left and moves down.
+	   y_position is the "origin" or "top" of the track.
+	 */
+
+	double mybot = y_position + height; // XXX need to include Editor::track_spacing; 
+	
+	return ((y_position <= bot && y_position >= top) || 
+		((mybot <= bot) && (top < mybot)) || 
+		(mybot >= bot && y_position < top));
+}		
+
+void
+TimeAxisView::set_parent (TimeAxisView& p)
+{
+	parent = &p;
+}
+
+bool
+TimeAxisView::has_state () const
+{
+	return _has_state;
+}
+
+TimeAxisView*
+TimeAxisView::get_parent_with_state ()
+{
+	if (parent == 0) {
+		return 0;
+	}
+
+	if (parent->has_state()) {
+		return parent;
+	} 
+
+	return parent->get_parent_with_state ();
+}		
+
+void
+TimeAxisView::set_state (const XMLNode& node)
+{
+	const XMLProperty *prop;
+
+	if ((prop = node.property ("track_height")) != 0) {
+
+		if (prop->value() == "largest") {
+			set_height (Largest);
+		} else if (prop->value() == "large") {
+			set_height (Large);
+		} else if (prop->value() == "larger") {
+			set_height (Larger);
+		} else if (prop->value() == "normal") {
+			set_height (Normal);
+		} else if (prop->value() == "smaller") {
+			set_height (Smaller);
+		} else if (prop->value() == "small") {
+			set_height (Small);
+		} else {
+			error << compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
+			set_height (Normal);
+		}
+
+	} else {
+		set_height (Normal);
+	}
+}
+
+void
+TimeAxisView::reset_height()
+{
+	set_height ((TrackHeight) height);
+
+	for (vector<TimeAxisView*>::iterator i = children.begin(); i != children.end(); ++i) {
+		(*i)->set_height ((TrackHeight)(*i)->height);
+	}
+}
+