Paul Davis
f744b5fc12
Having the velocity bar inset from note causes distracting space at beginning of note when viewing a MIDI note that is zoomed out
102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
/*
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* Copyright (C) 2018 Paul Davis <paul@linuxaudiosystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <cairomm/context.h>
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#include "gtkmm2ext/colors.h"
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#include "gtkmm2ext/rgb_macros.h"
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#include "canvas/note.h"
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#include "canvas/debug.h"
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using namespace std;
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using namespace ArdourCanvas;
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bool Note::_show_velocity_bars = true;
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void
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Note::set_show_velocity_bars (bool yn)
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{
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_show_velocity_bars = yn;
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}
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Note::Note (Canvas* c)
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: Rectangle (c)
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, _velocity (0.0)
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, _velocity_color (0)
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{
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}
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Note::Note (Item* parent)
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: Rectangle (parent)
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, _velocity (0.0)
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, _velocity_color (0)
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{
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}
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void
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Note::set_velocity (double fract)
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{
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_velocity = max (0.0, min (1.0, fract));
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redraw ();
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}
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void
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Note::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
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{
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Rectangle::render (area, context);
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if (_show_velocity_bars && _velocity > 0.0) {
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Rect self (item_to_window (Rectangle::get().translate (_position), false));
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if ((self.y1 - self.y0) < ((outline_width() * 2) + 1)) {
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/* not tall enough to show a velocity bar */
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return;
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}
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/* 2 pixel margin above and below (taking outline width into account).
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outline_width() margin on left.
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set width based on velocity.
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*/
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const double center = (self.y1 - self.y0) * 0.5;
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self.y1 = self.y0 + center + 2;
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self.y0 = self.y0 + center - 1;
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const double width = (self.x1 - self.x0) - (2 * outline_width());
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self.x0 = self.x0 + outline_width();
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self.x1 = self.x0 + (width * _velocity);
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const Rect draw = self.intersection (area);
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if (!draw) {
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return;
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}
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Gtkmm2ext::set_source_rgba (context, _velocity_color);
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context->rectangle (draw.x0, draw.y0, draw.width(), draw.height());
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context->fill ();
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}
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}
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void
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Note::set_fill_color (Gtkmm2ext::Color c)
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{
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Fill::set_fill_color (c);
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_velocity_color = UINT_INTERPOLATE (c, 0x000000ff, 0.5);
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}
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