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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 "Composition.h"
#include "Profiler.h"
#include "matrixhlayout.h"
#include "matrixstaff.h"
#include "rosedebug.h"
using Rosegarden::timeT;
using Rosegarden::Staff;
MatrixHLayout::MatrixHLayout(Rosegarden::Composition *c) :
Rosegarden::HorizontalLayoutEngine(c),
m_totalWidth(0.0),
m_firstBar(0)
{
}
MatrixHLayout::~MatrixHLayout()
{
}
void MatrixHLayout::reset()
{
}
void MatrixHLayout::resetStaff(Staff&, timeT, timeT)
{
}
void MatrixHLayout::scanStaff(Staff &staffBase,
timeT startTime, timeT endTime)
{
Rosegarden::Profiler profiler("MatrixHLayout::scanStaff", true);
// The Matrix layout is not currently designed to be able to lay
// out more than one staff, because we have no requirement to show
// more than one at once in the Matrix view. To make it work for
// multiple staffs should be straightforward; we just need to bear
// in mind that they might start and end at different times (hence
// the total width and bar list can't just be calculated from the
// last staff scanned as they are now).
MatrixStaff &staff = static_cast<MatrixStaff &>(staffBase);
bool isFullScan = (startTime == endTime);
MatrixElementList *notes = staff.getViewElementList();
MatrixElementList::iterator startItr = notes->begin();
MatrixElementList::iterator endItr = notes->end();
if (!isFullScan) {
startItr = notes->findNearestTime(startTime);
if (startItr == notes->end()) startItr = notes->begin();
endItr = notes->findTime(endTime);
}
if (endItr == notes->end() && startItr == notes->begin()) {
isFullScan = true;
}
// Do this in two parts: bar lines separately from elements.
// (We don't need to do all that stuff notationhlayout has to do,
// scanning the notes bar-by-bar; we can just place the bar lines
// in the theoretically-correct places and do the same with the
// notes quite independently.)
Rosegarden::Segment &segment = staff.getSegment();
Rosegarden::Composition *composition = segment.getComposition();
m_firstBar = composition->getBarNumber(segment.getStartTime());
timeT from = composition->getBarStart(m_firstBar),
to = composition->getBarEndForTime(segment.getEndMarkerTime());
double startPosition = from;
// 1. Bar lines and time signatures. We only re-make these on
// full scans.
if (isFullScan || m_barData.size() == 0) {
m_barData.clear();
int barNo = m_firstBar;
MATRIX_DEBUG << "MatrixHLayout::scanStaff() : start time = " << startTime << ", first bar = " << m_firstBar << ", end time = " << endTime << ", end marker time = " << segment.getEndMarkerTime() << ", from = " << from << ", to = " << to << endl;
// hack for partial bars
//
timeT adjTo = to;
if (composition->getBarStartForTime(segment.getEndMarkerTime())
!= segment.getEndMarkerTime())
adjTo++;
while (from < adjTo) {
bool isNew = false;
Rosegarden::TimeSignature timeSig =
composition->getTimeSignatureInBar(barNo, isNew);
if (isNew || barNo == m_firstBar) {
m_barData.push_back(BarData((from - startPosition) *
staff.getTimeScaleFactor(),
TimeSigData(true, timeSig)));
} else {
m_barData.push_back(BarData((from - startPosition) *
staff.getTimeScaleFactor(),
TimeSigData(false, timeSig)));
}
from = composition->getBarEndForTime(from);
++barNo;
}
m_barData.push_back(BarData(to * staff.getTimeScaleFactor(),
TimeSigData(false, Rosegarden::TimeSignature())));
}
// 2. Elements
m_totalWidth = 0.0;
MatrixElementList::iterator i = startItr;
while (i != endItr) {
(*i)->setLayoutX(((*i)->getViewAbsoluteTime() - startPosition)
* staff.getTimeScaleFactor());
double width = (*i)->getViewDuration() * staff.getTimeScaleFactor();
// Make sure that very small elements can still be seen
//
if (width < 3) width = 3;
else width += 1; // fiddle factor
static_cast<MatrixElement*>((*i))->setWidth((int)width);
if (isFullScan) {
m_totalWidth = (*i)->getLayoutX() + width;
} else {
m_totalWidth = std::max(m_totalWidth, (*i)->getLayoutX() + width);
}
++i;
}
}
double MatrixHLayout::getTotalWidth()
{
return m_totalWidth;
}
int MatrixHLayout::getFirstVisibleBar()
{
return m_firstBar;
}
int MatrixHLayout::getLastVisibleBar()
{
int barNo = m_firstBar + m_barData.size() - 2;
if (barNo < m_firstBar + 1) barNo = m_firstBar + 1;
return barNo;
}
double MatrixHLayout::getBarPosition(int barNo)
{
if (barNo < getFirstVisibleBar()) {
return getBarPosition(getFirstVisibleBar());
}
if (barNo > getLastVisibleBar()) {
return getBarPosition(getLastVisibleBar());
}
return m_barData[barNo - m_firstBar].first;
}
bool MatrixHLayout::getTimeSignaturePosition(Staff &,
int barNo,
Rosegarden::TimeSignature &timeSig,
double &timeSigX)
{
timeSig = m_barData[barNo - m_firstBar].second.second;
timeSigX = m_barData[barNo - m_firstBar].first;
return m_barData[barNo - m_firstBar].second.first;
}
void MatrixHLayout::finishLayout(timeT, timeT)
{
}
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