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#include "bmp_slave.h"
#include "thumbnailtool.h"
#include <qimage.h>
#include <qobject.h>
#include <qfile.h>
#include <qpixmap.h>
#include <qstring.h>
PHUNK_VIEW_INTERFACE( "Bmp", BmpSlave );
namespace {
struct pBmpHeader {
// file header of bmp
char type[2]; // must be "BM" otherwise it is no bmp
Q_INT32 hSize;
Q_INT32 reserved1,reserved2;
Q_INT16 Planes;
Q_INT16 BitCount;
Q_INT32 Size;
Q_INT32 Width;
Q_INT32 Height;
Q_INT32 Compression;
Q_INT32 SizeImage;
Q_INT32 XPerMeter;
Q_INT32 YPerMeter;
Q_INT32 ClrUsed;
Q_INT32 ClrImportant;
};
class BmpHeader {
protected:
void read_data();
QString _name;
QFile _inputfile;
pBmpHeader m_Header;
static const int OLD = 12;
static const int WIN = 40;
static const int OS2 = 64;
static const int RGB = 0;
static const int RLE8 = 1;
static const int RLE4 = 2;
public:
BmpHeader(const QString&fname);
virtual ~BmpHeader();
bool isBmp()const{return qstrncmp(m_Header.type,"BM",2)==0;}
bool isCompressed()const{return m_Header.Compression != 0;}
QSize imageSize(){return QSize(m_Header.Width,m_Header.Height);}
QString imageCompression()const;
int bitsPixel()const{return m_Header.BitCount;}
int Size()const{return m_Header.hSize;}
int compressedSize()const{return m_Header.SizeImage;}
int ColorsUsed()const{return m_Header.ClrUsed;}
int XPix()const{return m_Header.XPerMeter;}
int YPix()const{return m_Header.YPerMeter;}
};
QString BmpHeader::imageCompression()const
{
switch (m_Header.Compression) {
case RLE8:
return "8Bit RLE Encoding";
break;
case RLE4:
return "4Bit RLE Encoding";
break;
case RGB:
default:
return "No encoding";
}
}
BmpHeader::BmpHeader(const QString&fname)
: _name(fname),_inputfile(_name)
{
read_data();
}
void BmpHeader::read_data() {
memset(&m_Header,0,sizeof(pBmpHeader));
if (!_inputfile.open(IO_Raw|IO_ReadOnly))
return;
QDataStream s(&_inputfile);
s.setByteOrder( QDataStream::LittleEndian );
s.readRawBytes(m_Header.type,2);
if (!isBmp()) {
_inputfile.close();
return;
}
s >> m_Header.hSize;
s >> m_Header.reserved1 >> m_Header.reserved2;
s >> m_Header.Size;
if ( m_Header.Size == BmpHeader::WIN || m_Header.Size == BmpHeader::OS2 ) {
s >> m_Header.Width >> m_Header.Height >> m_Header.Planes >> m_Header.BitCount;
s >> m_Header.Compression >> m_Header.SizeImage;
s >> m_Header.XPerMeter >> m_Header.YPerMeter;
s >> m_Header.ClrUsed >> m_Header.ClrImportant;
} else {
Q_INT16 w, h;
s >> w >> h >> m_Header.Planes >> m_Header.BitCount;
m_Header.Width = w;
m_Header.Height = h;
m_Header.Compression = BmpHeader::RGB;
m_Header.SizeImage = 0;
m_Header.XPerMeter = m_Header.YPerMeter = 0;
m_Header.ClrUsed = m_Header.ClrImportant = 0;
}
_inputfile.close();
}
BmpHeader::~BmpHeader() {
}
}
BmpSlave::BmpSlave()
: SlaveInterface(QStringList("bmp"))
{}
BmpSlave::~BmpSlave() {
}
QString BmpSlave::iconViewName(const QString& str) {
QString st;
BmpHeader bh(str);
if (!bh.isBmp()) {
st.append("No bmp file");
return st;
}
QSize isize = bh.imageSize();
st+=QObject::tr("Dimensions: %1 x %2\n").arg(isize.width()).arg(isize.height());
st+=QObject::tr("Size: %1\n").arg(bh.Size());
st+=QObject::tr("Depth: %1\n").arg(bh.bitsPixel());
return st;
}
QString BmpSlave::fullImageInfo( const QString& str) {
QString st = "<qt>";
BmpHeader bh(str);
if (!bh.isBmp()) {
st.append("No bmp file");
st.append( "</qt>" );
return st;
}
QSize isize = bh.imageSize();
st+=QObject::tr("Dimensions: %1 x %2\n").arg(isize.width()).arg(isize.height());
st+=QObject::tr("Size: %1\n").arg(bh.Size());
st+=QObject::tr("Compression: %1\n").arg(bh.imageCompression());
if (bh.isCompressed()) {
st+=QObject::tr("Compressed size: %1").arg(bh.compressedSize());
}
st+=QObject::tr("Depth: %1\n").arg(bh.bitsPixel());
st+=QObject::tr("used colors: %1\n").arg(bh.ColorsUsed());
st+=QObject::tr("Resolution: %1 x %2\n").arg(bh.XPix()).arg(bh.YPix());
st.append( "</qt>" );
return st;
}
QPixmap BmpSlave::pixmap(const QString& path, int width, int height ) {
static QImage img;
img.load( path );
if ( img.isNull() ) {
QPixmap pix;
return pix;
}
return ThumbNailTool::scaleImage( img, width,height );
}
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