119 lines
5.1 KiB
C++
Executable File
119 lines
5.1 KiB
C++
Executable File
#ifndef IMG_QT_CONVERT_H_
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#define IMG_QT_CONVERT_H_
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// implementation of conversione between qimage and basic image types
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#include <QImage>
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namespace img {
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template<typename ScalarType, bool Safe>
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inline void convert_QImage_to_Y(const QImage &source, Image<1,ScalarType,Safe> &destination)
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{
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assert(!source.isNull());
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if(Safe){
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if(source.isNull()) throw ImageException("Null source image");
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}
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destination.setZero(source.width(),source.height());
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for (int y_coord = 0; y_coord < source.height(); ++y_coord)
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for (int x_coord = 0; x_coord < source.width(); ++x_coord){
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destination.setValue(x_coord, y_coord, 0, qGray(source.pixel(x_coord, y_coord)) );
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}
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destination.attributes.setRange(ScalarType(0.0),ScalarType(255.0));
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}
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template<typename ScalarType, bool Safe>
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inline void convert_QImage_to_RGB(const QImage &source, Image<3,ScalarType,Safe> &destination)
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{
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assert(!source.isNull());
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if(Safe){
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if(source.isNull()) throw ImageException("Null source image");
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}
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destination.setZero(source.width(),source.height());
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for (int y_coord = 0; y_coord < source.height(); ++y_coord)
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for (int x_coord = 0; x_coord < source.width(); ++x_coord){
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QRgb qpixel = source.pixel(x_coord, y_coord);
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destination.setValue(x_coord, y_coord, 0, qRed(qpixel) );
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destination.setValue(x_coord, y_coord, 1, qGreen(qpixel) );
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destination.setValue(x_coord, y_coord, 2, qBlue(qpixel) );
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}
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destination.attributes.setRange(ScalarType(0.0),ScalarType(255.0));
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}
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template<typename ScalarType, bool Safe>
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inline void convert_QImage_to_RGBA(const QImage &source, Image<4,ScalarType,Safe> &destination)
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{
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assert(!source.isNull());
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if(Safe){
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if(source.isNull()) throw ImageException("Null source image");
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}
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destination.setZero(source.width(),source.height());
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for (int y_coord = 0; y_coord < source.height(); ++y_coord)
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for (int x_coord = 0; x_coord < source.width(); ++x_coord){
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QRgb qpixel = source.pixel(x_coord, y_coord);
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destination.setValue(x_coord, y_coord, 0, qRed(qpixel) );
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destination.setValue(x_coord, y_coord, 1, qGreen(qpixel) );
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destination.setValue(x_coord, y_coord, 2, qBlue(qpixel) );
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destination.setValue(x_coord, y_coord, 3, qAlpha(qpixel) );
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}
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destination.attributes.setRange(ScalarType(0.0),ScalarType(255.0));
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}
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template<typename ScalarType, bool Safe>
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inline void convert_Y_to_QImage(const Image<1,ScalarType,Safe> &source, QImage &destination)
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{
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assert(source.isValid());
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assert(source.attributes.hasRange(0,255));
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if(Safe){
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if(!source.isValid()) throw ImageException("Invalid source image");
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if(!source.attributes.hasRange(0,255)) throw ImageException("Invalid range attribute");
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}
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destination=QImage(source.width(),source.height(),QImage::Format_RGB32);
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for (int y_coord = 0; y_coord < source.height(); ++y_coord)
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for (int x_coord = 0; x_coord < source.width(); ++x_coord){
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int Y = valueAsInt(clampValue(source.getValue(x_coord,y_coord,0)));
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destination.setPixel(x_coord,y_coord,qRgb(Y,Y,Y));
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}
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}
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template<typename ScalarType, bool Safe>
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inline void convert_RGB_to_QImage(const Image<3,ScalarType,Safe> &source, QImage &destination)
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{
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assert(source.isValid());
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assert(source.attributes.hasRange(ScalarType(0.0),ScalarType(255.0)));
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if(Safe){
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if(!source.isValid()) throw ImageException("Invalid source image");
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if(!source.attributes.hasRange(ScalarType(0.0),ScalarType(255.0))) throw ImageException("Invalid range attribute");
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}
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destination=QImage(source.width(),source.height(),QImage::Format_RGB32);
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for (int y_coord = 0; y_coord < source.height(); ++y_coord)
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for (int x_coord = 0; x_coord < source.width(); ++x_coord){
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destination.setPixel(x_coord,y_coord,qRgb(valueAsInt(clampValue(source.getValue(x_coord,y_coord,0))),
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valueAsInt(clampValue(source.getValue(x_coord,y_coord,1))),
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valueAsInt(clampValue(source.getValue(x_coord,y_coord,2))) ));
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}
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}
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template<typename ScalarType, bool Safe>
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inline void convert_RGBA_to_QImage(const Image<4,ScalarType,Safe> &source, QImage &destination)
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{
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assert(source.isValid());
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assert(source.attributes.hasRange(ScalarType(0.0),ScalarType(255.0)));
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if(Safe){
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if(!source.isValid()) throw ImageException("Invalid source image");
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if(!source.attributes.hasRange(ScalarType(0.0),ScalarType(255.0))) throw ImageException("Invalid range attribute");
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}
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destination=QImage(source.width(),source.height(),QImage::Format_ARGB32);
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for (int y_coord = 0; y_coord < source.height(); ++y_coord)
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for (int x_coord = 0; x_coord < source.width(); ++x_coord){
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destination.setPixel(x_coord,y_coord,qRgba(valueAsInt(clampValue(source.getValue(x_coord,y_coord,0))),
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valueAsInt(clampValue(source.getValue(x_coord,y_coord,1))),
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valueAsInt(clampValue(source.getValue(x_coord,y_coord,2))),
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valueAsInt(clampValue(source.getValue(x_coord,y_coord,3))) ));
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}
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}
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} //end namespace img
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#endif /*IMG_QT_CONVERT_H_*/
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