forked from v-yadli/MuseBox
/
cursorruler.cpp
42 lines (35 loc) · 1005 Bytes
/
cursorruler.cpp
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#include "cursorruler.h"
#include <QPainter>
#include <QPen>
#include <QBrush>
CursorRuler::CursorRuler(QDeclarativeItem *parent) :
QDeclarativeItem(parent)
{
setFlag(QGraphicsItem::ItemHasNoContents, false);
QDeclarativeItem::setCacheMode(ItemCoordinateCache);
_beatCount = _unitCount = 3;
}
void CursorRuler::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->save();
QBrush brush;
int w = width();
int h = height();
brush.setColor(Qt::black);
brush.setStyle(Qt::SolidPattern);
painter->setPen(Qt::NoPen);
painter->setBrush(brush);
painter->drawRect(0,0,w,h);
int beatLength = 120 / _beatCount;
for(int i=0;i<w;i += 120)
{
painter->setPen(Qt::lightGray);
painter->drawLine(i,0,i,h-4);
for(int j=1;j<_beatCount;++j)
{
painter->setPen(Qt::darkGray);
painter->drawLine(i+j*beatLength,0,i+j*beatLength,h-8);
}
}
painter->restore();
}