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#include <fstream>
#include <qfileinfo.h>
#include <qfiledialog.h>
#include <qlayout.h>
#include <qpainter.h>
#include "colormapreader.h"
using namespace Qwt3D;
using namespace std;
#if QT_VERSION < 0x040000
ColorMapPreview::ColorMapPreview( QWidget *parent )
: QFrame( parent )
{
label_ = new QLabel(this);
setFrameShape( QFrame::StyledPanel );
setFrameShadow( QFrame::Sunken );
QGridLayout* layout = new QGridLayout( this, 1, 1, 10);
layout->addWidget( label_, 0, 0, Qt::AlignJustify );
}
void ColorMapPreview::previewUrl( const QUrl &u )
{
QString path = u.path();
QFileInfo fi( path );
if (fi.extension() != "map" && fi.extension() != "MAP")
label_->setText( "No color map" );
else
{
if ( open(path) )
label_->setPixmap( pix_ );
}
}
bool ColorMapPreview::open(QString fname)
{
if (fname.isEmpty())
return false;
ifstream file(QWT3DLOCAL8BIT(fname));
RGBA rgb;
cv.clear();
while ( file )
{
file >> rgb.r >> rgb.g >> rgb.b;
file.ignore(10000,'\n');
if (!file.good())
break;
else
{
rgb.a = 1;
rgb.r /= 255;
rgb.g /= 255;
rgb.b /= 255;
cv.push_back(rgb);
}
}
pix_.resize(80, cv.size());
QPainter p( &pix_ );
p.translate( 0, cv.size()-1 );
for (unsigned i=0; i!=cv.size(); ++i)
{
rgb = cv[i];
p.setPen(GL2Qt(rgb.r,rgb.g,rgb.b));
p.drawLine(QPoint(0,0),QPoint(pix_.width(),0));
p.translate( 0, -1 );
}
p.end();
return true;
}
#else
#endif
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