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livetrax/gtk2_ardour/recorder_group_tabs.cc

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/*
* Copyright (C) 2020 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "recorder_group_tabs.h"
#include "recorder_ui.h"
#include "track_record_axis.h"
#include "ui_config.h"
#ifdef WAF_BUILD
#include "gtk2ardour-config.h"
#endif
using namespace ARDOUR;
RecorderGroupTabs::RecorderGroupTabs (RecorderUI* parent)
: _recorder (parent)
{
}
double
RecorderGroupTabs::primary_coordinate (double, double y) const
{
return y;
}
double
RecorderGroupTabs::visible_extent () const
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{
return get_height ();
}
std::list<GroupTabs::Tab>
RecorderGroupTabs::compute_tabs () const
{
std::list<Tab> tabs;
Tab tab;
tab.from = 0;
tab.group = 0;
int32_t y = 0;
std::list<TrackRecordAxis*> recorders = _recorder->visible_recorders ();
for (std::list<TrackRecordAxis*>::const_iterator i = recorders.begin (); i != recorders.end (); ++i) {
if ((*i)->route ()->presentation_info ().hidden ()) { // marked_for_display ()
continue;
}
RouteGroup* g = (*i)->route_group ();
if (g != tab.group) {
if (tab.group) {
tab.to = y;
tabs.push_back (tab);
}
tab.from = y;
tab.group = g;
if (g) {
tab.color = group_color (g);
}
}
y += (*i)->get_height ();
}
if (tab.group) {
tab.to = y;
tabs.push_back (tab);
}
return tabs;
}
RouteList
RecorderGroupTabs::routes_for_tab (Tab const* t) const
{
RouteList routes;
int32_t y = 0;
std::list<TrackRecordAxis*> recorders = _recorder->visible_recorders ();
for (std::list<TrackRecordAxis*>::const_iterator i = recorders.begin (); i != recorders.end (); ++i) {
if (y >= t->to) {
/* tab finishes before this track starts */
break;
}
double const h = y + (*i)->get_height () / 2;
if (t->from < h && t->to > h) {
routes.push_back ((*i)->route ());
}
y += (*i)->get_height ();
}
return routes;
}
void
RecorderGroupTabs::draw_tab (cairo_t* cr, Tab const& tab)
{
double const arc_radius = get_width ();
double r, g, b, a;
if (tab.group && tab.group->is_active ()) {
Gtkmm2ext::color_to_rgba (tab.color, r, g, b, a);
} else {
Gtkmm2ext::color_to_rgba (UIConfiguration::instance ().color ("inactive group tab"), r, g, b, a);
}
a = 1.0;
cairo_set_source_rgba (cr, r, g, b, a);
cairo_move_to (cr, 0, tab.from + arc_radius);
cairo_arc (cr, get_width (), tab.from + arc_radius, arc_radius, M_PI, 3 * M_PI / 2);
cairo_line_to (cr, get_width (), tab.to);
cairo_arc (cr, get_width (), tab.to - arc_radius, arc_radius, M_PI / 2, M_PI);
cairo_line_to (cr, 0, tab.from + arc_radius);
cairo_fill (cr);
if (tab.group && (tab.to - tab.from) > arc_radius) {
int text_width, text_height;
Glib::RefPtr<Pango::Layout> layout;
layout = Pango::Layout::create (get_pango_context ());
layout->set_ellipsize (Pango::ELLIPSIZE_MIDDLE);
layout->set_text (tab.group->name ());
layout->set_width ((tab.to - tab.from - arc_radius) * PANGO_SCALE);
layout->get_pixel_size (text_width, text_height);
cairo_move_to (cr, (get_width () - text_height) * .5, (text_width + tab.to + tab.from) * .5);
Gtkmm2ext::Color c = Gtkmm2ext::contrasting_text_color (Gtkmm2ext::rgba_to_color (r, g, b, a));
Gtkmm2ext::color_to_rgba (c, r, g, b, a);
cairo_set_source_rgb (cr, r, g, b);
cairo_save (cr);
cairo_rotate (cr, M_PI * -.5);
pango_cairo_show_layout (cr, layout->gobj ());
cairo_restore (cr);
}
}
RouteList
RecorderGroupTabs::selected_routes () const
{
RouteList rl;
return rl;
}