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livetrax/gtk2_ardour/canvas-note-event.cc
David Robillard d357eca668 Factor out sequencing related things into an independant new library: "evoral". 
Anything related to the storage of events/values over a range of time lives in evoral.
This includes MidiModel (Evoral::Sequence) and automation data (AutomationList (Evoral::ControlList),
	Automatable (Evoral::ControlSet), etc).
libs/evoral synced with http://svn.drobilla.net/lad/trunk/evoral r1511.


git-svn-id: svn://localhost/ardour2/branches/3.0@3754 d708f5d6-7413-0410-9779-e7cbd77b26cf
2008-09-19 00:47:49 +00:00

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/*
Copyright (C) 2007 Paul Davis
Author: Dave Robillard
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 "canvas-note-event.h"
#include "midi_region_view.h"
#include "public_editor.h"
#include "editing_syms.h"
#include "keyboard.h"
using namespace std;
using ARDOUR::MidiModel;
namespace Gnome {
namespace Canvas {
CanvasNoteEvent::CanvasNoteEvent(MidiRegionView& region, Item* item,
const boost::shared_ptr<Evoral::Note> note)
: _region(region)
, _item(item)
, _text(0)
, _channel_selector_widget()
, _state(None)
, _note(note)
, _selected(false)
{
}
CanvasNoteEvent::~CanvasNoteEvent()
{
if (_text) {
_text->hide();
delete _text;
}
if (_channel_selector_widget)
delete _channel_selector_widget;
}
void
CanvasNoteEvent::move_event(double dx, double dy)
{
_item->move(dx, dy);
if (_text) {
_text->hide();
_text->move(dx, dy);
_text->show();
}
}
void
CanvasNoteEvent::show_velocity(void)
{
hide_velocity();
_text = new Text(*(_item->property_parent()));
_text->property_x() = (x1() + x2()) /2;
_text->property_y() = (y1() + y2()) /2;
ostringstream velo(ios::ate);
velo << int(_note->velocity());
_text->property_text() = velo.str();
_text->property_justification() = Gtk::JUSTIFY_CENTER;
_text->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
_text->show();
_text->lower_to_bottom();
_text->raise(2);
}
void
CanvasNoteEvent::hide_velocity(void)
{
if(_text) {
_text->hide();
delete _text;
}
_text = 0;
}
void
CanvasNoteEvent::on_channel_selection_change(uint16_t selection)
{
// make note change its color if its channel is not marked active
if ( (selection & (1 << _note->channel())) == 0 ) {
set_fill_color(ARDOUR_UI::config()->canvasvar_MidiNoteFillInactiveChannel.get());
set_outline_color(ARDOUR_UI::config()->canvasvar_MidiNoteOutlineInactiveChannel.get());
} else {
// set the color according to the notes selection state
selected(_selected);
}
// this forces the item to update..... maybe slow...
_item->hide();
_item->show();
}
void
CanvasNoteEvent::on_channel_change(uint8_t channel)
{
_region.note_selected(this, true);
hide_channel_selector();
_region.change_channel(channel);
}
void
CanvasNoteEvent::show_channel_selector(void)
{
if (_channel_selector_widget == 0) {
cerr << "Note has channel: " << int(_note->channel()) << endl;
SingleMidiChannelSelector* _channel_selector = new SingleMidiChannelSelector(_note->channel());
_channel_selector->show_all();
_channel_selector->channel_selected.connect(
sigc::mem_fun(this, &CanvasNoteEvent::on_channel_change));
_channel_selector_widget =
new Widget(*(_item->property_parent()),
x1(),
y2() + 2,
(Gtk::Widget &) *_channel_selector);
_channel_selector_widget->hide();
_channel_selector_widget->property_height() = 100;
_channel_selector_widget->property_width() = 100;
_channel_selector_widget->raise_to_top();
_channel_selector_widget->show();
} else {
hide_channel_selector();
}
}
void
CanvasNoteEvent::hide_channel_selector(void)
{
if (_channel_selector_widget) {
_channel_selector_widget->hide();
delete _channel_selector_widget;
_channel_selector_widget = 0;
}
}
void
CanvasNoteEvent::selected(bool yn)
{
if (!_note) {
return;
} else if (yn) {
set_fill_color(UINT_INTERPOLATE(note_fill_color(_note->velocity()),
ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(), 0.1));
set_outline_color(ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get());
show_velocity();
} else {
set_fill_color(note_fill_color(_note->velocity()));
set_outline_color(note_outline_color(_note->velocity()));
hide_velocity();
}
_selected = yn;
}
bool
CanvasNoteEvent::on_event(GdkEvent* ev)
{
MidiStreamView *streamview = _region.midi_stream_view();
static uint8_t drag_delta_note = 0;
static double drag_delta_x = 0;
static double last_x, last_y;
double event_x, event_y, dx, dy;
bool select_mod;
uint8_t d_velocity = 10;
if (_region.get_time_axis_view().editor.current_mouse_mode() != Editing::MouseNote)
return false;
switch (ev->type) {
case GDK_SCROLL:
if (Keyboard::modifier_state_equals (ev->scroll.state, Keyboard::Level4Modifier)) {
d_velocity = 1;
}
if (ev->scroll.direction == GDK_SCROLL_UP) {
_region.note_selected(this, true);
if (_region.mouse_state() == MidiRegionView::SelectTouchDragging) {
// TODO: absolute velocity
} else {
_region.change_velocity(d_velocity, true);
}
return true;
} else if (ev->scroll.direction == GDK_SCROLL_DOWN) {
_region.note_selected(this, true);
if (_region.mouse_state() == MidiRegionView::SelectTouchDragging) {
// TODO: absolute velocity
} else {
_region.change_velocity(-d_velocity, true);
}
return true;
} else {
return false;
}
case GDK_KEY_PRESS:
if (_note && ev->key.keyval == GDK_Delete) {
selected(true);
_region.start_delta_command();
_region.command_remove_note(this);
}
break;
case GDK_KEY_RELEASE:
if (ev->key.keyval == GDK_Delete) {
_region.apply_command();
}
break;
case GDK_ENTER_NOTIFY:
_region.note_entered(this);
_item->grab_focus();
show_velocity();
Keyboard::magic_widget_grab_focus();
break;
case GDK_LEAVE_NOTIFY:
Keyboard::magic_widget_drop_focus();
if (! selected()) {
hide_velocity();
}
_region.get_canvas_group()->grab_focus();
break;
case GDK_BUTTON_PRESS:
if (ev->button.button == 1) {
_state = Pressed;
} else if (ev->button.button == 3) {
show_channel_selector();
}
return true;
case GDK_MOTION_NOTIFY:
event_x = ev->motion.x;
event_y = ev->motion.y;
switch (_state) {
case Pressed: // Drag begin
if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditSelect
&& _region.mouse_state() != MidiRegionView::SelectTouchDragging
&& _region.mouse_state() != MidiRegionView::EraseTouchDragging) {
_item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
_state = Dragging;
_item->property_parent().get_value()->w2i(event_x, event_y);
event_x = _region.snap_to_pixel(event_x);
last_x = event_x;
last_y = event_y;
drag_delta_x = 0;
drag_delta_note = 0;
_region.note_selected(this, true);
}
return true;
case Dragging: // Drag motion
if (ev->motion.is_hint) {
int t_x;
int t_y;
GdkModifierType state;
gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
event_x = t_x;
event_y = t_y;
}
_item->property_parent().get_value()->w2i(event_x, event_y);
// Snap
event_x = _region.snap_to_pixel(event_x);
dx = event_x - last_x;
dy = event_y - last_y;
last_x = event_x;
drag_delta_x += dx;
// Snap to note rows
if (abs(dy) < streamview->note_height()) {
dy = 0.0;
} else {
int8_t this_delta_note;
if (dy > 0) {
this_delta_note = (int8_t)ceil(dy / streamview->note_height() / 2.0);
} else {
this_delta_note = (int8_t)floor(dy / streamview->note_height() / 2.0);
}
drag_delta_note -= this_delta_note;
dy = streamview->note_height() * this_delta_note;
last_y = last_y + dy;
}
_region.move_selection(dx, dy);
return true;
default:
break;
}
break;
case GDK_BUTTON_RELEASE:
select_mod = (ev->motion.state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK));
event_x = ev->button.x;
event_y = ev->button.y;
_item->property_parent().get_value()->w2i(event_x, event_y);
if (ev->button.button == 3) {
return true;
}
switch (_state) {
case Pressed: // Clicked
if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditSelect) {
_state = None;
if (_selected && !select_mod && _region.selection_size() > 1)
_region.unique_select(this);
else if (_selected)
_region.note_deselected(this, select_mod);
else
_region.note_selected(this, select_mod);
} else if (_region.midi_view()->editor.current_midi_edit_mode() == Editing::MidiEditErase) {
_region.start_delta_command();
_region.command_remove_note(this);
_region.apply_command();
}
return true;
case Dragging: // Dropped
_item->ungrab(ev->button.time);
_state = None;
if (_note)
_region.note_dropped(this,
_region.midi_view()->editor.pixel_to_frame(abs(drag_delta_x))
* ((drag_delta_x < 0.0) ? -1 : 1),
drag_delta_note);
return true;
default:
break;
}
default:
break;
}
return false;
}
} // namespace Canvas
} // namespace Gnome
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