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//
// C++ Implementation: sccursor
//
//
// Author: Pierre Marchand <pierremarc@oep-h.com>, (C) 2008
//
// Copyright: See COPYING file that comes with this distribution
//
//
#include "scresizecursor.h"
#include <QDebug>
#include <QPainter>
#include <QPixmap>
#include <QPen>
#include <QBrush>
#define SCCURSORMAXANGLE 360
QMap<unsigned int, QCursor> ScResizeCursor::cdb;
void ScResizeCursor::initCursorDb(int idx)
{
if(cdb.contains(idx))
return;
QRect rect(0,0,32,32);
int ww(rect.width());
int hh(rect.height());
int uu(ww / 32 );
QPen pen(QColor(232,232,232), 1);
QBrush brush(QColor(32,32,32));
// the double-arrow
// we build it around (0,0) to ease rotations
// TODO design a _nice_ cursor
QPainterPath path;
double sext(12);
double pext(6);
double pint(6);
double sint(1);
/*
/\ ^
/ \ .
/ \ .
/ \ .
/ \ .
/ \ .
/ \ s
/ \ e
/_______ ______\ x
| | t ^
| | . .
| | . .
| | . p
| | . e
| | . x
| | . t
| | . .
| | | . .
-------------------------- v v
<a>
<⋅⋅⋅⋅b⋅⋅⋅⋅>
a/ sint
b/ pint
*/
path.moveTo(0, -sext * uu);
path.lineTo( pint*uu,-pext*uu);
path.lineTo( sint*uu,-pext*uu);
path.lineTo( sint*uu, pext*uu);
path.lineTo( pint*uu, pext*uu);
path.lineTo( 0 , sext*uu);
path.lineTo(-pint*uu, pext*uu);
path.lineTo(-sint*uu, pext*uu);
path.lineTo(-sint*uu,-pext*uu);
path.lineTo(-pint*uu,-pext*uu);
path.lineTo( 0, -sext*uu);
// for(unsigned int rot(0); rot < SCCURSORMAXANGLE; ++rot)
// {
int rot(idx);
QPixmap pxm(rect.size());
pxm.fill(QColor (255, 255, 255, 0 ));
QPainter painter(&pxm);
if((idx != 0)
// && (idx != 45)
&& (idx != 90)
// && (idx != 135)
&& (idx != 180)
// && (idx != 225)
&& (idx != 270)
// && (idx != 315)
&& (idx != 360)
)
painter.setRenderHint(QPainter::Antialiasing, true);
painter.translate( ww/2, ww/2 );
painter.rotate(rot);
painter.setPen(pen);
painter.setBrush(brush);
painter.drawPath(path);
cdb[rot] = QCursor ( pxm, ww/2, hh/2 );
// }
}
ScResizeCursor::ScResizeCursor()
{
cIdx = 0;
initCursorDb(cIdx);
}
ScResizeCursor::ScResizeCursor(double rotation)
{
int irot(qRound(rotation));
if(irot < 0)
cIdx = SCCURSORMAXANGLE + (irot % SCCURSORMAXANGLE);
else
cIdx = irot % SCCURSORMAXANGLE ;
initCursorDb(cIdx);
}
ScResizeCursor::operator const QCursor &()
{
return cdb[cIdx];
}
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