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livetrax/gtk2_ardour/editor_group_tabs.cc

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/*
Copyright (C) 2009 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.
*/
#include "ardour/route_group.h"
#include "editor_group_tabs.h"
#include "editor.h"
#include "route_time_axis.h"
#include "utils.h"
using namespace std;
using namespace ARDOUR;
EditorGroupTabs::EditorGroupTabs (Editor* e)
: _editor (e)
{
}
list<GroupTabs::Tab>
EditorGroupTabs::compute_tabs () const
{
list<Tab> tabs;
Tab tab;
tab.from = 0;
tab.group = 0;
int32_t y = 0;
for (Editor::TrackViewList::iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
if ((*i)->marked_for_display() == false) {
continue;
}
RouteGroup* g = (*i)->route_group ();
if (g != tab.group) {
if (tab.group) {
tab.to = y;
tab.last_ui_size = (*i)->effective_height ();
tabs.push_back (tab);
}
tab.from = y;
tab.group = g;
tab.colour = (*i)->color ();
tab.first_ui_size = (*i)->effective_height ();
}
y += (*i)->effective_height ();
}
if (tab.group) {
tab.to = y;
tabs.push_back (tab);
}
return tabs;
}
void
EditorGroupTabs::draw_tab (cairo_t* cr, Tab const & tab) const
{
double const arc_radius = _width;
if (tab.group->is_active()) {
cairo_set_source_rgba (cr, tab.colour.get_red_p (), tab.colour.get_green_p (), tab.colour.get_blue_p (), 1);
} else {
cairo_set_source_rgba (cr, 1, 1, 1, 0.2);
}
cairo_move_to (cr, 0, tab.from + arc_radius);
cairo_arc (cr, _width, tab.from + arc_radius, arc_radius, M_PI, 3 * M_PI / 2);
cairo_line_to (cr, _width, tab.to);
cairo_arc (cr, _width, tab.to - arc_radius, arc_radius, M_PI / 2, M_PI);
cairo_line_to (cr, 0, tab.from + arc_radius);
cairo_fill (cr);
pair<string, double> const f = fit_to_pixels (cr, tab.group->name(), tab.to - tab.from - arc_radius * 2);
cairo_text_extents_t ext;
cairo_text_extents (cr, tab.group->name().c_str(), &ext);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_move_to (cr, _width - ext.height / 2, tab.from + (f.second + tab.to - tab.from) / 2);
cairo_save (cr);
cairo_rotate (cr, - M_PI / 2);
cairo_show_text (cr, f.first.c_str());
cairo_restore (cr);
}
double
EditorGroupTabs::primary_coordinate (double, double y) const
{
return y;
}
void
EditorGroupTabs::reflect_tabs (list<Tab> const & tabs)
{
list<Tab>::const_iterator j = tabs.begin ();
int32_t y = 0;
for (Editor::TrackViewList::iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
if ((*i)->marked_for_display() == false) {
continue;
}
RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
if (rtv) {
if (j == tabs.end()) {
/* already run out of tabs, so no edit group */
rtv->route()->set_route_group (0, this);
} else {
if (y >= j->to) {
/* this tab finishes before this track starts, so onto the next tab */
++j;
}
double const h = y + (*i)->effective_height() / 2;
if (j->from < h && j->to > h) {
rtv->route()->set_route_group (j->group, this);
} else {
rtv->route()->set_route_group (0, this);
}
}
}
y += (*i)->effective_height ();
}
}
Gtk::Menu*
EditorGroupTabs::get_menu (RouteGroup *g)
{
_editor->build_route_group_menu (g);
return _editor->route_group_menu;
}