2 Copyright (C) 2008 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #include "midi_scroomer.h"
21 #include <cairomm/context.h>
25 using namespace Gtkmm2ext;
29 //std::map<int, Glib::RefPtr<Gdk::Pixmap> > MidiScroomer::piano_pixmaps;
31 MidiScroomer::MidiScroomer(Adjustment& adj)
32 : Gtkmm2ext::Scroomer(adj) {
37 /* set minimum view range to one octave */
38 set_min_page_size(12);
41 MidiScroomer::~MidiScroomer() {
45 MidiScroomer::on_expose_event(GdkEventExpose* ev) {
46 Cairo::RefPtr<Cairo::Context> cc = get_window()->create_cairo_context();
47 GdkRectangle comp_rect, clip_rect;
48 Component first_comp = point_in(ev->area.y);
49 Component last_comp = point_in(ev->area.y + ev->area.height);
50 int height = get_height();
52 double y2note = (double) 127 / height;
53 double note2y = (double) height / 127;
54 double note_width = 0.8 * get_width();
55 double note_height = 1.4 * note2y;
56 double black_shift = 0.1 * note2y;
57 double colors[6] = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f};
59 //cerr << ev->area.y << " " << ev->area.height << endl;
62 comp_rect.width = get_width();
64 for(int i = first_comp; i <= last_comp; ++i) {
65 Component comp = (Component) i;
66 set_comp_rect(comp_rect, comp);
68 if(gdk_rectangle_intersect(&comp_rect, &ev->area, &clip_rect)) {
69 get_colors(colors, comp);
71 cc->rectangle(clip_rect.x, clip_rect.y, clip_rect.width, clip_rect.height);
72 cc->set_source_rgb (colors[3], colors[4], colors[5]);
76 cc->set_source_rgb(colors[0], colors[1], colors[2]);
77 cc->set_line_width(note_height);
79 lnote = 127 - (int) floor((double) (clip_rect.y + clip_rect.height) * y2note) - 1;
80 hnote = 127 - (int) floor((double) clip_rect.y * y2note) + 1;
82 for(int note = lnote; note < hnote + 1; ++note) {
83 double y = height - note * note2y;
105 cc->set_line_width(1.4 * note2y);
107 cc->line_to(note_width, y);
112 if(i == Handle1 || i == Handle2) {
113 cc->rectangle(comp_rect.x + 0.5f, comp_rect.y + 0.5f, comp_rect.width - 1.0f, comp_rect.height - 1.0f);
114 cc->set_line_width(1.0f);
115 cc->set_source_rgb (1.0f, 1.0f, 1.0f);
127 MidiScroomer::get_colors(double color[], Component comp) {
161 MidiScroomer::on_size_request(Gtk::Requisition* r) {
169 MidiScroomer::on_size_allocate(Gtk::Allocation& a) {
170 Scroomer::on_size_allocate(a);