From 2db91c126edc8fcaeda711d35369970576715719 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sun, 13 Jan 2008 17:45:17 +0000 Subject: Apply MIDI keyboard and "scroomer" patch. git-svn-id: svn://localhost/ardour2/trunk@2908 d708f5d6-7413-0410-9779-e7cbd77b26cf --- gtk2_ardour/piano_roll_header.cc | 653 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 653 insertions(+) create mode 100644 gtk2_ardour/piano_roll_header.cc (limited to 'gtk2_ardour/piano_roll_header.cc') diff --git a/gtk2_ardour/piano_roll_header.cc b/gtk2_ardour/piano_roll_header.cc new file mode 100644 index 0000000000..8be0bc86c1 --- /dev/null +++ b/gtk2_ardour/piano_roll_header.cc @@ -0,0 +1,653 @@ +/* + 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 + +#include "piano_roll_header.h" +#include "midi_time_axis.h" +#include "midi_streamview.h" + +#include + +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) { + + 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 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 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 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 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 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 cr = get_window()->create_cairo_context(); + Cairo::RefPtr 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(10.0, _note_height); + 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(0, y + font_size + (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) { + 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(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 win = get_window(); + + if(win) { + win->process_updates(false); + } +} + +void +PianoRollHeader::invalidate_note_range(int lowest, int highest) { + Glib::RefPtr 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 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 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); + } +} -- cgit v1.2.3