100 lines
2.3 KiB
C++
100 lines
2.3 KiB
C++
/*
|
|
Copyright (C) 2002-2007 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 "pbd/compose.h"
|
|
|
|
#include "canvas/canvas.h"
|
|
#include "canvas/debug.h"
|
|
|
|
#include "tempo_lines.h"
|
|
#include "ardour_ui.h"
|
|
#include "public_editor.h"
|
|
|
|
using namespace std;
|
|
|
|
TempoLines::TempoLines (ArdourCanvas::Container* group, double)
|
|
: lines (group, ArdourCanvas::LineSet::Vertical)
|
|
{
|
|
lines.set_extent (ArdourCanvas::COORD_MAX);
|
|
}
|
|
|
|
void
|
|
TempoLines::tempo_map_changed()
|
|
{
|
|
lines.clear ();
|
|
}
|
|
|
|
void
|
|
TempoLines::show ()
|
|
{
|
|
lines.show ();
|
|
}
|
|
|
|
void
|
|
TempoLines::hide ()
|
|
{
|
|
lines.hide ();
|
|
}
|
|
|
|
void
|
|
TempoLines::draw (const ARDOUR::TempoMap::BBTPointList::const_iterator& begin,
|
|
const ARDOUR::TempoMap::BBTPointList::const_iterator& end)
|
|
{
|
|
ARDOUR::TempoMap::BBTPointList::const_iterator i;
|
|
double beat_density;
|
|
|
|
uint32_t beats = 0;
|
|
uint32_t bars = 0;
|
|
uint32_t color;
|
|
|
|
/* get the first bar spacing */
|
|
|
|
i = end;
|
|
i--;
|
|
bars = (*i).bar - (*begin).bar;
|
|
beats = distance (begin, end) - bars;
|
|
|
|
beat_density = (beats * 10.0f) / lines.canvas()->width();
|
|
|
|
if (beat_density > 4.0f) {
|
|
/* if the lines are too close together, they become useless */
|
|
lines.clear ();
|
|
return;
|
|
}
|
|
|
|
lines.clear ();
|
|
|
|
for (i = begin; i != end; ++i) {
|
|
|
|
if ((*i).is_bar()) {
|
|
color = ARDOUR_UI::config()->color ("measure line bar");
|
|
} else {
|
|
if (beat_density > 0.3) {
|
|
continue; /* only draw beat lines if the gaps between beats are large. */
|
|
}
|
|
color = ARDOUR_UI::config()->color_mod ("measure line beat", "measure line beat");
|
|
}
|
|
|
|
ArdourCanvas::Coord xpos = PublicEditor::instance().sample_to_pixel_unrounded ((*i).frame);
|
|
|
|
lines.add (xpos, 1.0, color);
|
|
}
|
|
}
|
|
|