mirror of
https://github.com/microtherion/VocalEasel.git
synced 2024-12-22 19:23:59 +00:00
136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
//
|
|
// File: VLLayout.cpp - Dimensions for lead sheet layout
|
|
//
|
|
// Author(s):
|
|
//
|
|
// (MN) Matthias Neeracher
|
|
//
|
|
// Copyright © 2007 Matthias Neeracher
|
|
//
|
|
|
|
#include "VLLayout.h"
|
|
#include "VLSheetViewInternal.h"
|
|
|
|
#include <algorithm>
|
|
#include <cstdlib>
|
|
#include <cmath>
|
|
|
|
VLSystemLayout::VLSystemLayout(const VLProperties & prop, float width, int maxMeas)
|
|
{
|
|
fDivisions = prop.fDivisions;
|
|
fNumGroups = prop.fTime.fNum / std::max(prop.fTime.fDenom / 4, 1);
|
|
fDivPerGroup = fDivisions * prop.fTime.fNum * 4 / (prop.fTime.fDenom * fNumGroups);
|
|
fClefKeyWidth = kClefX+kClefW+(std::labs(prop.fKey)+1)*kKeyW;
|
|
fMeasureWidth = fNumGroups*(fDivPerGroup+1)*kNoteW;
|
|
fNumMeasures = std::min(maxMeas,
|
|
std::max<int>(1,
|
|
std::floor((width-fClefKeyWidth) / fMeasureWidth)));
|
|
}
|
|
|
|
static size_t NextBreak(const VLSong & song, size_t after=0)
|
|
{
|
|
size_t propIdx = song.fMeasures[after].fPropIdx;
|
|
while (++after < song.fMeasures.size())
|
|
if (song.fMeasures[after].fBreak || song.fMeasures[after].fPropIdx != propIdx)
|
|
return after;
|
|
return song.fMeasures.size();
|
|
}
|
|
|
|
VLLayout::VLLayout(const VLSong & song, float width)
|
|
{
|
|
size_t nextBreak = NextBreak(song);
|
|
for (size_t meas = 0; meas<song.fMeasures.size(); ) {
|
|
push_back(VLSystemLayout(song.Properties(meas), width, nextBreak-meas));
|
|
meas += back().NumMeasures();
|
|
if (meas >= nextBreak)
|
|
nextBreak = NextBreak(song, nextBreak);
|
|
}
|
|
}
|
|
|
|
int VLLayout::FirstMeasure(int system) const
|
|
{
|
|
int meas = 0;
|
|
for (int sys=0; sys<system; ++sys)
|
|
meas += (*this)[sys].NumMeasures();
|
|
return meas;
|
|
}
|
|
|
|
int VLLayout::SystemForMeasure(int measure) const
|
|
{
|
|
int sys;
|
|
for (sys=0; sys<size(); ++sys) {
|
|
measure -= (*this)[sys].NumMeasures();
|
|
if (measure < 0)
|
|
break;
|
|
}
|
|
return sys;
|
|
}
|
|
|
|
float VLLayout::MeasurePosition(int measure) const
|
|
{
|
|
for (int sys=0; sys<size(); ++sys) {
|
|
const VLSystemLayout & layout = (*this)[sys];
|
|
if (measure < layout.NumMeasures())
|
|
return layout.MeasurePosition(measure);
|
|
measure -= layout.NumMeasures();
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
float VLLayout::NotePosition(int measure, VLFraction at) const
|
|
{
|
|
for (int sys=0; sys<size(); ++sys) {
|
|
const VLSystemLayout & layout = (*this)[sys];
|
|
if (measure < layout.NumMeasures()) {
|
|
int div = at.fNum*4*layout.Divisions() / at.fDenom;
|
|
|
|
return layout.MeasurePosition(measure)
|
|
+ (div + div/layout.DivPerGroup() + 1)*kNoteW;
|
|
}
|
|
measure -= layout.NumMeasures();
|
|
}
|
|
return 0.0f;
|
|
}
|
|
|
|
VLFontHandler::~VLFontHandler()
|
|
{
|
|
}
|
|
|
|
VLTextLayout::VLTextLayout(VLFontHandler * regular, VLFontHandler * narrow)
|
|
: fRegularFont(regular), fNarrowFont(narrow)
|
|
{
|
|
}
|
|
|
|
void VLTextLayout::AddSyllable(const VLSyllable & syll, float x)
|
|
{
|
|
VLLayoutSyll ls;
|
|
|
|
static_cast<VLSyllable &>(ls) = syll;
|
|
ls.fX = x;
|
|
|
|
fSyllables.push_back(ls);
|
|
}
|
|
|
|
typedef std::vector<VLLayoutSyll>::iterator VLSyllIter;
|
|
|
|
#define NARROW_SPACE "\xE2\x80\x89"
|
|
|
|
void VLTextLayout::DrawLine(float y)
|
|
{
|
|
VLSyllIter syll = fSyllables.begin();
|
|
VLSyllIter end = fSyllables.end();
|
|
|
|
while (syll != end) {
|
|
std::string text = syll->fText;
|
|
float x = syll->fX-0.5*fRegularFont->Width(text.c_str());
|
|
if (syll == fSyllables.begin() && syll->fKind & VLSyllable::kHasPrev)
|
|
text = "-" NARROW_SPACE + text;
|
|
if (syll->fKind & VLSyllable::kHasNext)
|
|
text += NARROW_SPACE "-";
|
|
|
|
fRegularFont->Draw(x, y, text.c_str());
|
|
|
|
++syll;
|
|
}
|
|
}
|