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livetrax/libs/canvas/note.cc
Paul Davis f744b5fc12 change velocity bar inside notes to extend to edges of note
Having the velocity bar inset from note causes distracting space at beginning of note
when viewing a MIDI note that is zoomed out
2020-03-26 10:12:54 -06:00

102 lines
2.5 KiB
C++

/*
* Copyright (C) 2018 Paul Davis <paul@linuxaudiosystems.com>
*
* 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 <cairomm/context.h>
#include "gtkmm2ext/colors.h"
#include "gtkmm2ext/rgb_macros.h"
#include "canvas/note.h"
#include "canvas/debug.h"
using namespace std;
using namespace ArdourCanvas;
bool Note::_show_velocity_bars = true;
void
Note::set_show_velocity_bars (bool yn)
{
_show_velocity_bars = yn;
}
Note::Note (Canvas* c)
: Rectangle (c)
, _velocity (0.0)
, _velocity_color (0)
{
}
Note::Note (Item* parent)
: Rectangle (parent)
, _velocity (0.0)
, _velocity_color (0)
{
}
void
Note::set_velocity (double fract)
{
_velocity = max (0.0, min (1.0, fract));
redraw ();
}
void
Note::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
{
Rectangle::render (area, context);
if (_show_velocity_bars && _velocity > 0.0) {
Rect self (item_to_window (Rectangle::get().translate (_position), false));
if ((self.y1 - self.y0) < ((outline_width() * 2) + 1)) {
/* not tall enough to show a velocity bar */
return;
}
/* 2 pixel margin above and below (taking outline width into account).
outline_width() margin on left.
set width based on velocity.
*/
const double center = (self.y1 - self.y0) * 0.5;
self.y1 = self.y0 + center + 2;
self.y0 = self.y0 + center - 1;
const double width = (self.x1 - self.x0) - (2 * outline_width());
self.x0 = self.x0 + outline_width();
self.x1 = self.x0 + (width * _velocity);
const Rect draw = self.intersection (area);
if (!draw) {
return;
}
Gtkmm2ext::set_source_rgba (context, _velocity_color);
context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
context->fill ();
}
}
void
Note::set_fill_color (Gtkmm2ext::Color c)
{
Fill::set_fill_color (c);
_velocity_color = UINT_INTERPOLATE (c, 0x000000ff, 0.5);
}