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Basic canvas note event handling framework.

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Note dragging (non-functional).


git-svn-id: svn://localhost/ardour2/trunk@2187 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
David Robillard 2007-07-30 16:33:10 +00:00
parent 633d9131af
commit 2cbaa2751c
10 changed files with 398 additions and 89 deletions
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122
gtk2_ardour/canvas-midi-event.cc Normal file
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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-midi-event.h"
#include "midi_region_view.h"
#include "public_editor.h"
#include "editing_syms.h"
using namespace std;
namespace Gnome {
namespace Canvas {
CanvasMidiEvent::CanvasMidiEvent(MidiRegionView& region, Item* item)
: _region(region)
, _item(item)
, _state(None)
{
}
bool
CanvasMidiEvent::on_event(GdkEvent* ev)
{
static double last_x, last_y;
double event_x, event_y;
if (_region.get_time_axis_view().editor.current_mouse_mode() != Editing::MouseNote)
return false;
switch (ev->type) {
/*case GDK_ENTER_NOTIFY:
cerr << "ENTERED: " << ev->crossing.state << endl;
if ( (ev->crossing.state & GDK_BUTTON2_MASK) ) {
}
break;
*/
case GDK_KEY_PRESS:
cerr << "EVENT KEY PRESS\n"; // doesn't work :/
break;
case GDK_BUTTON_PRESS:
_state = Pressed;
return true;
case GDK_MOTION_NOTIFY:
event_x = ev->motion.x;
event_y = ev->motion.y;
_item->property_parent().get_value()->w2i(event_x, event_y);
switch (_state) {
case Pressed:
_item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
_state = Dragging;
last_x = event_x;
last_y = event_y;
return true;
case Dragging:
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->move(event_x - last_x, event_y - last_y);
last_x = event_x;
last_y = event_y;
return true;
default:
break;
}
break;
case GDK_BUTTON_RELEASE:
switch (_state) {
case Pressed: // Clicked
_state = None;
return true;
case Dragging: // Dropped
_item->ungrab(ev->button.time);
_state = None;
return true;
default:
break;
}
default:
break;
}
return false;
}
} // namespace Canvas
} // namespace Gnome