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livetrax/gtk2_ardour/piano_roll_header.cc
David Robillard e0aaed6d65 *** NEW CODING POLICY *** 
All #include statements that include a header that is a part of a library
bundled with ardour MUST use quotes, not angle brackets.

Do this:

#include "ardour/types.h"

NOT this:

#include <ardour/types.h>

Rationale:

This is best practice in general, to ensure we include the local version
and not the system version.  That quotes mean "local" (in some sense)
and angle brackets mean "system" (in some sense) is a ubiquitous
convention and IIRC right in the C spec somewhere.

More pragmatically, this is required by (my) waf (stuff) for dependencies
to work correctly.  That is:

!!! FAILURE TO DO THIS CAN RESULT IN BROKEN BUILDS !!!

Failure to comply is punishable by death by torture. :)

P.S. It's not that dramatic in all cases, but this (in combination with some
GCC flags specific to the include type) is the best way I have found to be
absolutely 100% positive the local ones are being used (and we definitely
want to be absolutely 100% positive on that one).


git-svn-id: svn://localhost/ardour2/branches/3.0@4655 d708f5d6-7413-0410-9779-e7cbd77b26cf
2009-02-25 18:26:51 +00:00

675 lines
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/*
Copyright (C) 2008 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 <iostream>
#include "evoral/midi_events.h"
#include "ardour/midi_track.h"
#include "piano_roll_header.h"
#include "midi_time_axis.h"
#include "midi_streamview.h"
const int no_note = 0xff;
using namespace std;
PianoRollHeader::Color PianoRollHeader::white = PianoRollHeader::Color(0.77f, 0.78f, 0.76f);
PianoRollHeader::Color PianoRollHeader::white_highlight = PianoRollHeader::Color(0.87f, 0.88f, 0.86f);
PianoRollHeader::Color PianoRollHeader::white_shade_light = PianoRollHeader::Color(0.95f, 0.95f, 0.95f);
PianoRollHeader::Color PianoRollHeader::white_shade_dark = PianoRollHeader::Color(0.56f, 0.56f, 0.56f);
PianoRollHeader::Color PianoRollHeader::black = PianoRollHeader::Color(0.24f, 0.24f, 0.24f);
PianoRollHeader::Color PianoRollHeader::black_highlight = PianoRollHeader::Color(0.30f, 0.30f, 0.30f);
PianoRollHeader::Color PianoRollHeader::black_shade_light = PianoRollHeader::Color(0.46f, 0.46f, 0.46f);
PianoRollHeader::Color PianoRollHeader::black_shade_dark = PianoRollHeader::Color(0.1f, 0.1f, 0.1f);
PianoRollHeader::Color::Color()
: r(1.0f)
, g(1.0f)
, b(1.0f)
{
}
PianoRollHeader::Color::Color(double _r, double _g, double _b)
: r(_r)
, g(_g)
, b(_b)
{
}
inline void
PianoRollHeader::Color::set(const PianoRollHeader::Color& c)
{
r = c.r;
g = c.g;
b = c.b;
}
PianoRollHeader::PianoRollHeader(MidiStreamView& v)
: _view(v)
, _highlighted_note(no_note)
, _clicked_note(no_note)
, _dragging(false)
{
add_events (Gdk::BUTTON_PRESS_MASK |
Gdk::BUTTON_RELEASE_MASK |
Gdk::POINTER_MOTION_MASK |
Gdk::ENTER_NOTIFY_MASK |
Gdk::LEAVE_NOTIFY_MASK |
Gdk::SCROLL_MASK);
for (int i = 0; i < 128; ++i) {
_active_notes[i] = false;
}
_view.NoteRangeChanged.connect (mem_fun (*this, &PianoRollHeader::note_range_changed));
}
inline void
create_path(Cairo::RefPtr<Cairo::Context> cr, double x[], double y[], int start, int stop)
{
cr->move_to(x[start], y[start]);
for (int i = start+1; i <= stop; ++i) {
cr->line_to(x[i], y[i]);
}
}
inline void
render_rect(Cairo::RefPtr<Cairo::Context> cr, int note, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 4);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 2);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 2, 4);
cr->stroke();
}
inline void
render_cf(Cairo::RefPtr<Cairo::Context> cr, int note, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 6);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 4);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 4, 6);
cr->stroke();
}
inline void
render_eb(Cairo::RefPtr<Cairo::Context> cr, int note, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 6);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 2);
cr->stroke();
create_path(cr, x, y, 4, 5);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 2, 4);
cr->stroke();
create_path(cr, x, y, 5, 6);
cr->stroke();
}
inline void
render_dga(Cairo::RefPtr<Cairo::Context> cr, int note, double x[], double y[],
PianoRollHeader::Color& bg, PianoRollHeader::Color& tl_shadow, PianoRollHeader::Color& br_shadow)
{
cr->set_source_rgb(bg.r, bg.g, bg.b);
create_path(cr, x, y, 0, 8);
cr->fill();
cr->set_source_rgb(tl_shadow.r, tl_shadow.g, tl_shadow.b);
create_path(cr, x, y, 0, 4);
cr->stroke();
create_path(cr, x, y, 6, 7);
cr->stroke();
cr->set_source_rgb(br_shadow.r, br_shadow.g, br_shadow.b);
create_path(cr, x, y, 4, 6);
cr->stroke();
create_path(cr, x, y, 7, 8);
cr->stroke();
}
void
PianoRollHeader::get_path(PianoRollHeader::ItemType note_type, int note, double x[], double y[])
{
double y_pos = floor(_view.note_to_y(note)) - 0.5f;
double note_height;
double other_y1 = floor(_view.note_to_y(note+1)) + floor(_note_height / 2.0f) + 0.5f;
double other_y2 = floor(_view.note_to_y(note-1)) + floor(_note_height / 2.0f) - 1.0f;
double width = get_width();
if (note == 0) {
note_height = floor(_view.contents_height()) - y_pos;
} else {
note_height = floor(_view.note_to_y(note - 1)) - y_pos;
}
switch (note_type) {
case BLACK_SEPARATOR:
x[0] = 1.5f;
y[0] = y_pos;
x[1] = _black_note_width;
y[1] = y_pos;
break;
case BLACK_MIDDLE_SEPARATOR:
x[0] = _black_note_width;
y[0] = y_pos + floor(_note_height / 2.0f);
x[1] = width - 1.0f;
y[1] = y[0];
break;
case BLACK:
x[0] = 1.5f;
y[0] = y_pos + note_height - 0.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = _black_note_width;
y[2] = y_pos + 1.0f;
x[3] = _black_note_width;
y[3] = y_pos + note_height - 0.5f;
x[4] = 1.5f;
y[4] = y_pos + note_height - 0.5f;
return;
case WHITE_SEPARATOR:
x[0] = 1.5f;
y[0] = y_pos;
x[1] = width - 1.5f;
y[1] = y_pos;
break;
case WHITE_RECT:
x[0] = 1.5f;
y[0] = y_pos + note_height - 0.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = width - 1.5f;
y[2] = y_pos + 1.0f;
x[3] = width - 1.5f;
y[3] = y_pos + note_height - 0.5f;
x[4] = 1.5f;
y[4] = y_pos + note_height - 0.5f;
return;
case WHITE_CF:
x[0] = 1.5f;
y[0] = y_pos + note_height - 1.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = _black_note_width + 1.0f;
y[2] = y_pos + 1.0f;
x[3] = _black_note_width + 1.0f;
y[3] = other_y1;
x[4] = width - 1.5f;
y[4] = other_y1;
x[5] = width - 1.5f;
y[5] = y_pos + note_height - 1.5f;
x[6] = 1.5f;
y[6] = y_pos + note_height - 1.5f;
return;
case WHITE_EB:
x[0] = 1.5f;
y[0] = y_pos + note_height - 1.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = width - 1.5f;
y[2] = y_pos + 1.0f;
x[3] = width - 1.5f;
y[3] = other_y2;
x[4] = _black_note_width + 1.0f;
y[4] = other_y2;
x[5] = _black_note_width + 1.0f;
y[5] = y_pos + note_height - 1.5f;
x[6] = 1.5f;
y[6] = y_pos + note_height - 1.5f;
return;
case WHITE_DGA:
x[0] = 1.5f;
y[0] = y_pos + note_height - 1.5f;
x[1] = 1.5f;
y[1] = y_pos + 1.0f;
x[2] = _black_note_width + 1.0f;
y[2] = y_pos + 1.0f;
x[3] = _black_note_width + 1.0f;
y[3] = other_y1;
x[4] = width - 1.5f;
y[4] = other_y1;
x[5] = width - 1.5f;
y[5] = other_y2;
x[6] = _black_note_width + 1.0f;
y[6] = other_y2;
x[7] = _black_note_width + 1.0f;
y[7] = y_pos + note_height - 1.5f;
x[8] = 1.5f;
y[8] = y_pos + note_height - 1.5f;
return;
default:
return;
}
}
bool
PianoRollHeader::on_expose_event (GdkEventExpose* ev)
{
GdkRectangle& rect = ev->area;
double font_size;
int lowest, highest;
Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context();
Cairo::RefPtr<Cairo::LinearGradient> pat = Cairo::LinearGradient::create(0, 0, _black_note_width, 0);
double x[9];
double y[9];
Color bg, tl_shadow, br_shadow;
int oct_rel;
int y1 = max(rect.y, 0);
int y2 = min(rect.y + rect.height, (int) floor(_view.contents_height() - 1.0f));
//Cairo::TextExtents te;
lowest = max(_view.lowest_note(), _view.y_to_note(y2));
highest = min(_view.highest_note(), _view.y_to_note(y1));
if (lowest > 127) {
lowest = 0;
}
cr->select_font_face ("Georgia", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
font_size = min((double) 10.0f, _note_height - 4.0f);
cr->set_font_size(font_size);
/* fill the entire rect with the color for non-highlighted white notes.
* then we won't have to draw the background for those notes,
* and would only have to draw the background for the one highlighted white note*/
//cr->rectangle(rect.x, rect.y, rect.width, rect.height);
//cr->set_source_rgb(white.r, white.g, white.b);
//cr->fill();
cr->set_line_width(1.0f);
/* draw vertical lines with shade at both ends of the widget */
cr->set_source_rgb(0.0f, 0.0f, 0.0f);
cr->move_to(0.5f, rect.y);
cr->line_to(0.5f, rect.y + rect.height);
cr->stroke();
cr->move_to(get_width() - 0.5f, rect.y);
cr->line_to(get_width() - 0.5f, rect.y + rect.height);
cr->stroke();
//pat->add_color_stop_rgb(0.0, 0.33, 0.33, 0.33);
//pat->add_color_stop_rgb(0.2, 0.39, 0.39, 0.39);
//pat->add_color_stop_rgb(1.0, 0.22, 0.22, 0.22);
//cr->set_source(pat);
for (int i = lowest; i <= highest; ++i) {
oct_rel = i % 12;
switch (oct_rel) {
case 1:
case 3:
case 6:
case 8:
case 10:
/* black note */
if (i == _highlighted_note) {
bg.set(black_highlight);
} else {
bg.set(black);
}
if (_active_notes[i]) {
tl_shadow.set(black_shade_dark);
br_shadow.set(black_shade_light);
} else {
tl_shadow.set(black_shade_light);
br_shadow.set(black_shade_dark);
}
/* draw black separators */
cr->set_source_rgb(0.0f, 0.0f, 0.0f);
get_path(BLACK_SEPARATOR, i, x, y);
create_path(cr, x, y, 0, 1);
cr->stroke();
get_path(BLACK_MIDDLE_SEPARATOR, i, x, y);
create_path(cr, x, y, 0, 1);
cr->stroke();
get_path(BLACK, i, x, y);
render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
break;
default:
/* white note */
if (i == _highlighted_note) {
bg.set(white_highlight);
} else {
bg.set(white);
}
if (_active_notes[i]) {
tl_shadow.set(white_shade_dark);
br_shadow.set(white_shade_light);
} else {
tl_shadow.set(white_shade_light);
br_shadow.set(white_shade_dark);
}
switch(oct_rel) {
case 0:
case 5:
if (i == _view.highest_note()) {
get_path(WHITE_RECT, i, x, y);
render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
} else {
get_path(WHITE_CF, i, x, y);
render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
}
break;
case 2:
case 7:
case 9:
if (i == _view.highest_note()) {
get_path(WHITE_EB, i, x, y);
render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
} else if (i == _view.lowest_note()) {
get_path(WHITE_CF, i, x, y);
render_cf(cr, i, x, y, bg, tl_shadow, br_shadow);
} else {
get_path(WHITE_DGA, i, x, y);
render_dga(cr, i, x, y, bg, tl_shadow, br_shadow);
}
break;
case 4:
case 11:
cr->set_source_rgb(0.0f, 0.0f, 0.0f);
get_path(WHITE_SEPARATOR, i, x, y);
create_path(cr, x, y, 0, 1);
cr->stroke();
if (i == _view.lowest_note()) {
get_path(WHITE_RECT, i, x, y);
render_rect(cr, i, x, y, bg, tl_shadow, br_shadow);
} else {
get_path(WHITE_EB, i, x, y);
render_eb(cr, i, x, y, bg, tl_shadow, br_shadow);
}
break;
default:
break;
}
break;
}
/* render the name of which C this is */
if (oct_rel == 0) {
std::stringstream s;
double y = floor(_view.note_to_y(i)) - 0.5f;
double note_height = floor(_view.note_to_y(i - 1)) - y;
int cn = i / 12;
s << "C" << cn;
//cr->get_text_extents(s.str(), te);
cr->set_source_rgb(0.30f, 0.30f, 0.30f);
cr->move_to(2.0f, y + note_height - 1.0f - (note_height - font_size) / 2.0f);
cr->show_text(s.str());
}
}
return true;
}
bool
PianoRollHeader::on_motion_notify_event (GdkEventMotion* ev)
{
int note = _view.y_to_note(ev->y);
if (_highlighted_note != no_note) {
if (note > _highlighted_note) {
invalidate_note_range(_highlighted_note, note);
} else {
invalidate_note_range(note, _highlighted_note);
}
_highlighted_note = note;
}
/* redraw already taken care of above */
if (_clicked_note != no_note && _clicked_note != note) {
_active_notes[_clicked_note] = false;
send_note_off(_clicked_note);
_clicked_note = note;
if (!_active_notes[note]) {
_active_notes[note] = true;
send_note_on(note);
}
}
//win->process_updates(false);
return true;
}
bool
PianoRollHeader::on_button_press_event (GdkEventButton* ev)
{
int note = _view.y_to_note(ev->y);
if (ev->type == GDK_BUTTON_PRESS && note >= 0 && note < 128) {
add_modal_grab();
_dragging = true;
if (!_active_notes[note]) {
_active_notes[note] = true;
_clicked_note = note;
send_note_on(note);
invalidate_note_range(note, note);
} else {
_clicked_note = no_note;
}
}
return true;
}
bool
PianoRollHeader::on_button_release_event (GdkEventButton* ev)
{
int note = _view.y_to_note(ev->y);
if (_dragging) {
remove_modal_grab();
_dragging = false;
if (note == _clicked_note) {
_active_notes[note] = false;
_clicked_note = no_note;
send_note_off(note);
invalidate_note_range(note, note);
}
}
return true;
}
bool
PianoRollHeader::on_enter_notify_event (GdkEventCrossing* ev)
{
_highlighted_note = _view.y_to_note(ev->y);
invalidate_note_range(_highlighted_note, _highlighted_note);
return true;
}
bool
PianoRollHeader::on_leave_notify_event (GdkEventCrossing*)
{
invalidate_note_range(_highlighted_note, _highlighted_note);
if (_clicked_note != no_note) {
_active_notes[_clicked_note] = false;
send_note_off(_clicked_note);
if (_clicked_note != _highlighted_note) {
invalidate_note_range(_clicked_note, _clicked_note);
}
_clicked_note = no_note;
}
_highlighted_note = no_note;
return true;
}
bool
PianoRollHeader::on_scroll_event (GdkEventScroll* ev)
{
return true;
}
void
PianoRollHeader::note_range_changed()
{
_note_height = floor(_view.note_height()) + 0.5f;
queue_draw();
Glib::RefPtr<Gdk::Window> win = get_window();
if (win) {
win->process_updates(false);
}
}
void
PianoRollHeader::invalidate_note_range(int lowest, int highest)
{
Glib::RefPtr<Gdk::Window> win = get_window();
Gdk::Rectangle rect;
// the non-rectangular geometry of some of the notes requires more
// redraws than the notes that actually changed.
switch(lowest % 12) {
case 0:
case 5:
lowest = max((int) _view.lowest_note(), lowest);
break;
default:
lowest = max((int) _view.lowest_note(), lowest - 1);
break;
}
switch(highest % 12) {
case 4:
case 11:
highest = min((int) _view.highest_note(), highest);
break;
case 1:
case 3:
case 6:
case 8:
case 10:
highest = min((int) _view.highest_note(), highest + 1);
break;
default:
highest = min((int) _view.highest_note(), highest + 2);
break;
}
double y = _view.note_to_y(highest);
double height = _view.note_to_y(lowest - 1) - y;
rect.set_x(0);
rect.set_width(get_width());
rect.set_y((int) floor(y));
rect.set_height((int) floor(height));
if (win) {
win->invalidate_rect(rect, false);
}
}
void
PianoRollHeader::on_size_request(Gtk::Requisition* r)
{
r->width = 20;
}
void
PianoRollHeader::on_size_allocate(Gtk::Allocation& a)
{
DrawingArea::on_size_allocate(a);
_black_note_width = floor(0.7 * get_width()) + 0.5f;
}
void
PianoRollHeader::send_note_on(uint8_t note)
{
boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
//cerr << "note on: " << (int) note << endl;
if (track) {
_event[0] = MIDI_CMD_NOTE_ON;
_event[1] = note;
_event[2] = 100;
track->write_immediate_event(3, _event);
}
}
void
PianoRollHeader::send_note_off(uint8_t note)
{
boost::shared_ptr<ARDOUR::MidiTrack> track = _view.trackview().midi_track();
if (track) {
_event[0] = MIDI_CMD_NOTE_OFF;
_event[1] = note;
_event[2] = 100;
track->write_immediate_event(3, _event);
}
}
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