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/*
* Copyright (C) 2008-2009 David Robillard <d@drobilla.net>
* Copyright (C) 2017 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 <iostream>
#include <cairomm/context.h>
#include "midi_scroomer.h"
#include "ui_config.h"
using namespace Gtk;
using namespace std;
//std::map<int, Glib::RefPtr<Gdk::Pixmap> > MidiScroomer::piano_pixmaps;
MidiScroomer::MidiScroomer(Adjustment& adj)
: ArdourWidgets::Scroomer(adj)
{
adj.set_lower(0);
adj.set_upper(127);
/* set minimum view range to one octave */
set_min_page_size(12);
}
MidiScroomer::~MidiScroomer()
{
}
bool
MidiScroomer::on_expose_event(GdkEventExpose* ev)
{
Cairo::RefPtr<Cairo::Context> cc = get_window()->create_cairo_context();
GdkRectangle comp_rect, clip_rect;
Component first_comp = point_in(ev->area.y);
Component last_comp = point_in(ev->area.y + ev->area.height);
int height = get_height();
int lnote, hnote;
double y2note = (double) 127 / height;
double note2y = (double) height / 127;
double note_width = 0.8 * get_width();
double note_height = 1.4 * note2y;
double black_shift = 0.1 * note2y;
double colors[6] = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
//cerr << ev->area.y << " " << ev->area.height << endl;
comp_rect.x = 0;
comp_rect.width = get_width();
for (int i = first_comp; i <= last_comp; ++i) {
Component comp = (Component) i;
set_comp_rect(comp_rect, comp);
if (gdk_rectangle_intersect(&comp_rect, &ev->area, &clip_rect)) {
get_colors(colors, comp);
cc->rectangle(clip_rect.x, clip_rect.y, clip_rect.width, clip_rect.height);
cc->set_source_rgb (colors[3], colors[4], colors[5]);
cc->fill_preserve();
cc->clip();
cc->set_source_rgb(colors[0], colors[1], colors[2]);
cc->set_line_width(note_height);
lnote = 127 - (int) floor((double) (clip_rect.y + clip_rect.height) * y2note) - 1;
hnote = 127 - (int) floor((double) clip_rect.y * y2note) + 1;
for (int note = lnote; note < hnote + 1; ++note) {
double y = height - note * note2y;
bool draw = false;
switch (note % 12) {
case 1:
case 6:
y -= black_shift;
draw = true;
break;
case 3:
case 10:
y += black_shift;
draw = true;
break;
case 8:
draw = true;
break;
default:
break;
}
if(draw) {
cc->set_line_width(1.4 * note2y);
cc->move_to(0, y);
cc->line_to(note_width, y);
cc->stroke();
}
}
if (i == Handle1 || i == Handle2) {
cc->rectangle(comp_rect.x + 0.5f, comp_rect.y + 0.5f, comp_rect.width - 1.0f, comp_rect.height - 1.0f);
cc->set_line_width(1.0f);
cc->set_source_rgb (1.0f, 1.0f, 1.0f);
cc->stroke();
}
cc->reset_clip();
}
}
return true;
}
void
MidiScroomer::get_colors(double color[], Component comp)
{
switch (comp) {
case TopBase:
case BottomBase:
color[0] = 0.24f;
color[1] = 0.24f;
color[2] = 0.24f;
color[3] = 0.33f;
color[4] = 0.33f;
color[5] = 0.33f;
break;
case Handle1:
case Handle2:
color[0] = 0.91f;
color[1] = 0.91f;
color[2] = 0.91f;
color[3] = 0.0f;
color[4] = 0.0f;
color[5] = 0.0f;
break;
case Slider:
color[0] = 0.38f;
color[1] = 0.38f;
color[2] = 0.38f;
color[3] = 0.77f;
color[4] = 0.77f;
color[5] = 0.77f;
break;
default:
break;
}
}
void
MidiScroomer::on_size_request(Gtk::Requisition* r)
{
r->width = std::max (12.f, rintf (12.f * UIConfiguration::instance().get_ui_scale()));
}
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