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// -*- c-basic-offset: 4 -*-
/*
Rosegarden-4
A sequencer and musical notation editor.
This program is Copyright 2000-2005
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
The moral right of the authors to claim authorship of this work
has been asserted.
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. See the file
COPYING included with this distribution for more information.
*/
#include "matrixcanvasview.h"
#include "matrixstaff.h"
#include "matrixelement.h"
#include "midipitchlabel.h"
#include "SnapGrid.h"
#include "rosedebug.h"
using Rosegarden::timeT;
using Rosegarden::SnapGrid;
MatrixCanvasView::MatrixCanvasView(MatrixStaff& staff,
Rosegarden::SnapGrid *snapGrid,
QCanvas *viewing, QWidget *parent,
const char *name, WFlags f)
: RosegardenCanvasView(viewing, parent, name, f),
m_staff(staff),
m_snapGrid(snapGrid),
m_previousEvTime(0),
m_previousEvPitch(0),
m_mouseWasPressed(false),
m_ignoreClick(false),
m_smoothModifier(Qt::ShiftButton),
m_lastSnap(Rosegarden::SnapGrid::SnapToBeat),
m_isSnapTemporary(false)
{
viewport()->setMouseTracking(true);
}
MatrixCanvasView::~MatrixCanvasView()
{
}
void MatrixCanvasView::contentsMousePressEvent(QMouseEvent* e)
{
QPoint p = inverseMapPoint(e->pos());
updateGridSnap(e);
MATRIX_DEBUG << "MatrixCanvasView::contentsMousePressEvent: snap time is " << m_snapGrid->getSnapTime(double(p.x())) << endl;
timeT evTime = m_snapGrid->snapX(p.x(), SnapGrid::SnapLeft);
int evPitch = m_staff.getHeightAtCanvasCoords(p.x(), p.y());
timeT emTime = m_staff.getSegment().getEndMarkerTime();
if (evTime > emTime) evTime = emTime;
timeT esTime = m_staff.getSegment().getStartTime();
if (evTime < esTime) evTime = esTime;
// MATRIX_DEBUG << "MatrixCanvasView::contentsMousePressEvent() at pitch "
// << evPitch << ", time " << evTime << endl;
QCanvasItemList itemList = canvas()->collisions(p);
QCanvasItemList::Iterator it;
MatrixElement* mel = 0;
QCanvasItem* activeItem = 0;
for (it = itemList.begin(); it != itemList.end(); ++it) {
QCanvasItem *item = *it;
QCanvasMatrixRectangle* mRect = 0;
if (item->active()) {
activeItem = item;
break;
}
if ((mRect = dynamic_cast<QCanvasMatrixRectangle*>(item))) {
// QCanvas::collisions() can be a bit optimistic and report
// items which are close to the point but not actually under it.
// So a little sanity check helps.
if (! mRect->rect().contains(p, true)) continue;
mel = &(mRect->getMatrixElement());
MATRIX_DEBUG << "MatrixCanvasView::contentsMousePressEvent: collision with an existing matrix element" << endl;
break;
}
}
if (activeItem) { // active item takes precedence over notation elements
emit activeItemPressed(e, activeItem);
m_mouseWasPressed = true;
return;
}
emit mousePressed(evTime, evPitch, e, mel);
m_mouseWasPressed = true;
// Ignore click if it was above the staff and not
// on an active item
//
if (!m_staff.containsCanvasCoords(p.x(), p.y()) && !activeItem)
m_ignoreClick = true;
}
void MatrixCanvasView::contentsMouseMoveEvent(QMouseEvent* e)
{
QPoint p = inverseMapPoint(e->pos());
/*
if (m_snapGrid->getSnapTime(double(p.x())))
m_lastSnap = m_snapGrid->getSnapTime(double(p.x()));
*/
updateGridSnap(e);
if (m_ignoreClick) return;
timeT evTime = m_snapGrid->snapX(p.x(), SnapGrid::SnapLeft);
int evPitch = m_staff.getHeightAtCanvasCoords(p.x(), p.y());
timeT emTime = m_staff.getSegment().getEndMarkerTime();
if (evTime > emTime) evTime = emTime;
if (evTime != m_previousEvTime) {
emit hoveredOverAbsoluteTimeChanged(evTime);
m_previousEvTime = evTime;
}
if (evPitch != m_previousEvPitch) {
Rosegarden::MidiPitchLabel label(evPitch);
emit hoveredOverNoteChanged(evPitch);
m_previousEvPitch = evPitch;
}
if (m_mouseWasPressed) emit mouseMoved(evTime, evPitch, e);
}
void MatrixCanvasView::contentsMouseDoubleClickEvent (QMouseEvent* e)
{
QPoint p = inverseMapPoint(e->pos());
if (!m_staff.containsCanvasCoords(p.x(), p.y())) {
m_ignoreClick = true;
return;
}
contentsMousePressEvent(e);
}
void MatrixCanvasView::contentsMouseReleaseEvent(QMouseEvent* e)
{
QPoint p = inverseMapPoint(e->pos());
if (m_ignoreClick) {
m_ignoreClick = false;
return;
}
timeT evTime = m_snapGrid->snapX(p.x(), SnapGrid::SnapLeft);
int evPitch = m_staff.getHeightAtCanvasCoords(p.x(), p.y());
timeT emTime = m_staff.getSegment().getEndMarkerTime();
if (evTime > emTime) evTime = emTime;
emit mouseReleased(evTime, evPitch, e);
m_mouseWasPressed = false;
}
void MatrixCanvasView::slotExternalWheelEvent(QWheelEvent* e)
{
wheelEvent(e);
}
void MatrixCanvasView::updateGridSnap(QMouseEvent *e)
{
Qt::ButtonState bs = e->state();
// MATRIX_DEBUG << "MatrixCanvasView::updateGridSnap : bs = "
// << bs << " - sm = " << getSmoothModifier() << ", is temporary " << m_isSnapTemporary << ", saved is " << m_lastSnap << endl;
if (bs & getSmoothModifier()) {
if (!m_isSnapTemporary) {
m_lastSnap = m_snapGrid->getSnapSetting();
}
m_snapGrid->setSnapTime(SnapGrid::NoSnap);
m_isSnapTemporary = true;
} else if (m_isSnapTemporary) {
m_snapGrid->setSnapTime(m_lastSnap);
m_isSnapTemporary = false;
}
}
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