SubClass QFileIconProvider (from QDirModel) not compile....

**patrik08** · 29th March 2007, 11:15

Why i can not subclass QFileIconProvider

waht is mistake? on qt_metacast moc error moc exist.....

debug\moc_user_file.cpp:37: error: `staticMetaObject' is not a member of `QFileI
conProvider'
debug\moc_user_file.cpp: In member function `virtual void* ImIconProvider::qt_me
tacast(const char*)':
debug\moc_user_file.cpp:51: error: `qt_metacast' is not a member of `QFileIconPr
ovider'
debug\moc_user_file.cpp: In member function `virtual int ImIconProvider::qt_meta
call(QMetaObject::Call, int, void**)':
debug\moc_user_file.cpp:56: error: `qt_metacall' is not a member of `QFileIconPr
ovider'
mingw32-make[1]: *** [debug\moc_user_file.o] Error 1

Qt Code:

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class ImIconProvider : public QFileIconProvider
{
    Q_OBJECT
 
    QStringList file_image;
    QStringList file_text;
    QStringList file_other;
public:
    ImIconProvider(QWidget *pa);
    ~ImIconProvider() {};
    const QIcon icon( const QFileInfo & fi );
};
 
ImIconProvider::ImIconProvider(QWidget* = 0)
{
    /* setup extension list to use */
	file_image.clear();
    file_text.clear();
    file_other.clear();
	file_image << "eps" << "gif" << "png" << "jpg" << "jpeg" << "xpm" << "tif" << "tiff" << "bmp" << "pbm" << "pgm" << "ppm" << "xbm" << "xpm" << "psd";
    file_text << "txt" << "cpp" << "h" << "dat" << "conf" << "ini" << "rtf" << "fos" << "xml" << "htm" << "html" << "css" <<"js";
    file_other << "pdf" << "doc" << "pdf" << "exe" << "rar" << "bz" << "tar" << "gz" << "zip";  
}
 
const QIcon ImIconProvider::icon(const QFileInfo &fi)
{
	const QString ext = fi.suffix().toLower();
	if (file_image.contains(ext)) {
		return QIcon("image.png");
    } else if (file_image.contains(ext)) {
        return QIcon("text.png");
    } else if (file_image.contains(ext)) {
        return QIcon("other.png");
    } else {
        return QIcon("unknow.png");
    }
    /* end icon s*/
}

class ImIconProvider : public QFileIconProvider
{
    Q_OBJECT
    
    QStringList file_image;
    QStringList file_text;
    QStringList file_other;
public:
    ImIconProvider(QWidget *pa);
    ~ImIconProvider() {};
    const QIcon icon( const QFileInfo & fi );
};

ImIconProvider::ImIconProvider(QWidget* = 0)
{
    /* setup extension list to use */
	file_image.clear();
    file_text.clear();
    file_other.clear();
	file_image << "eps" << "gif" << "png" << "jpg" << "jpeg" << "xpm" << "tif" << "tiff" << "bmp" << "pbm" << "pgm" << "ppm" << "xbm" << "xpm" << "psd";
    file_text << "txt" << "cpp" << "h" << "dat" << "conf" << "ini" << "rtf" << "fos" << "xml" << "htm" << "html" << "css" <<"js";
    file_other << "pdf" << "doc" << "pdf" << "exe" << "rar" << "bz" << "tar" << "gz" << "zip";  
}

const QIcon ImIconProvider::icon(const QFileInfo &fi)
{
	const QString ext = fi.suffix().toLower();
	if (file_image.contains(ext)) {
		return QIcon("image.png");
    } else if (file_image.contains(ext)) {
        return QIcon("text.png");
    } else if (file_image.contains(ext)) {
        return QIcon("other.png");
    } else {
        return QIcon("unknow.png");
    }
    /* end icon s*/
}

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i append setIconProvider

Qt Code:

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modeluser = new QDirModel;
    modellocal = new QDirModel;
    setAcceptDrops(true);
    Q_ASSERT(pcsis);
    modeluser->setIconProvider(pcsis);
 
 
    modellocal->setResolveSymlinks(false);
    modeluser->setResolveSymlinks(false);
    usertree->setModel(modeluser);
    mlocal->setModel(modellocal);

modeluser = new QDirModel;
    modellocal = new QDirModel;
    setAcceptDrops(true);
    Q_ASSERT(pcsis);
    modeluser->setIconProvider(pcsis);
    
    
    modellocal->setResolveSymlinks(false);
    modeluser->setResolveSymlinks(false);
    usertree->setModel(modeluser);
    mlocal->setModel(modellocal);

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**viking** · 29th March 2007, 11:47

Originally Posted by patrik08

Why i can not subclass QFileIconProvider

waht is mistake? on qt_metacast moc error moc exist.....

debug\moc_user_file.cpp:37: error: `staticMetaObject' is not a member of `QFileI
conProvider'
debug\moc_user_file.cpp: In member function `virtual void* ImIconProvider::qt_me
tacast(const char*)':
debug\moc_user_file.cpp:51: error: `qt_metacast' is not a member of `QFileIconPr
ovider'
debug\moc_user_file.cpp: In member function `virtual int ImIconProvider::qt_meta
call(QMetaObject::Call, int, void**)':
debug\moc_user_file.cpp:56: error: `qt_metacall' is not a member of `QFileIconPr
ovider'
mingw32-make[1]: *** [debug\moc_user_file.o] Error 1

Qt Code:

Switch view

class ImIconProvider : public QFileIconProvider
{
    Q_OBJECT
 
    QStringList file_image;
    QStringList file_text;
    QStringList file_other;
public:
    ImIconProvider(QWidget *pa);
    ~ImIconProvider() {};
    const QIcon icon( const QFileInfo & fi );
};
 
ImIconProvider::ImIconProvider(QWidget* = 0)
{
    /* setup extension list to use */
	file_image.clear();
    file_text.clear();
    file_other.clear();
	file_image << "eps" << "gif" << "png" << "jpg" << "jpeg" << "xpm" << "tif" << "tiff" << "bmp" << "pbm" << "pgm" << "ppm" << "xbm" << "xpm" << "psd";
    file_text << "txt" << "cpp" << "h" << "dat" << "conf" << "ini" << "rtf" << "fos" << "xml" << "htm" << "html" << "css" <<"js";
    file_other << "pdf" << "doc" << "pdf" << "exe" << "rar" << "bz" << "tar" << "gz" << "zip";  
}
 
const QIcon ImIconProvider::icon(const QFileInfo &fi)
{
	const QString ext = fi.suffix().toLower();
	if (file_image.contains(ext)) {
		return QIcon("image.png");
    } else if (file_image.contains(ext)) {
        return QIcon("text.png");
    } else if (file_image.contains(ext)) {
        return QIcon("other.png");
    } else {
        return QIcon("unknow.png");
    }
    /* end icon s*/
}

class ImIconProvider : public QFileIconProvider
{
    Q_OBJECT
    
    QStringList file_image;
    QStringList file_text;
    QStringList file_other;
public:
    ImIconProvider(QWidget *pa);
    ~ImIconProvider() {};
    const QIcon icon( const QFileInfo & fi );
};

ImIconProvider::ImIconProvider(QWidget* = 0)
{
    /* setup extension list to use */
	file_image.clear();
    file_text.clear();
    file_other.clear();
	file_image << "eps" << "gif" << "png" << "jpg" << "jpeg" << "xpm" << "tif" << "tiff" << "bmp" << "pbm" << "pgm" << "ppm" << "xbm" << "xpm" << "psd";
    file_text << "txt" << "cpp" << "h" << "dat" << "conf" << "ini" << "rtf" << "fos" << "xml" << "htm" << "html" << "css" <<"js";
    file_other << "pdf" << "doc" << "pdf" << "exe" << "rar" << "bz" << "tar" << "gz" << "zip";  
}

const QIcon ImIconProvider::icon(const QFileInfo &fi)
{
	const QString ext = fi.suffix().toLower();
	if (file_image.contains(ext)) {
		return QIcon("image.png");
    } else if (file_image.contains(ext)) {
        return QIcon("text.png");
    } else if (file_image.contains(ext)) {
        return QIcon("other.png");
    } else {
        return QIcon("unknow.png");
    }
    /* end icon s*/
}

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i append setIconProvider

Qt Code:

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modeluser = new QDirModel;
    modellocal = new QDirModel;
    setAcceptDrops(true);
    Q_ASSERT(pcsis);
    modeluser->setIconProvider(pcsis);
 
 
    modellocal->setResolveSymlinks(false);
    modeluser->setResolveSymlinks(false);
    usertree->setModel(modeluser);
    mlocal->setModel(modellocal);

modeluser = new QDirModel;
    modellocal = new QDirModel;
    setAcceptDrops(true);
    Q_ASSERT(pcsis);
    modeluser->setIconProvider(pcsis);
    
    
    modellocal->setResolveSymlinks(false);
    modeluser->setResolveSymlinks(false);
    usertree->setModel(modeluser);
    mlocal->setModel(modellocal);

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try running moc on your Header file and include it in your project...

**viking** · 29th March 2007, 11:48

Originally Posted by viking

try running moc on your Header file and include it in your project...

ex:

Qt Code:

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moc your_Header.h -o moc_your_Header.cpp

moc your_Header.h -o moc_your_Header.cpp

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**wysota** · 29th March 2007, 12:00

QFileIconProvider is not a QObject, so you can't use Q_OBJECT with it.

**aamer4yu** · 29th March 2007, 12:01

oh ho.... didnt think of that

**viking** · 29th March 2007, 12:36

Originally Posted by wysota

QFileIconProvider is not a QObject, so you can't use Q_OBJECT with it.

hi wysota, could you elaborate?

**aamer4yu** · 29th March 2007, 12:56

Q_OBJECT can be used with those classes which are derived from QObject at any level.

as QFileIconProvider is not derived from QObject, it cannot be used with Q_OBJECT.

**patrik08** · 29th March 2007, 12:59

Originally Posted by wysota

QFileIconProvider is not a QObject, so you can't use Q_OBJECT with it.

if i remove Q_OBJECT can compile but not running...! and not display my icons..

i put Q_OBJECT why? on scribus apps having....

http://stuff.mit.edu/afs/athena/soft...ustomfdialog.h

maybe is qt3 ... i dont no..

Qt Code:

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#include "scribusapi.h"
 
/**
  *@author Franz Schmid
  */
class SCRIBUS_API ImIconProvider : public QFileIconProvider
{
    Q_OBJECT
    QStringList fmts;
    QPixmap imagepm;
    QPixmap docpm;
    QPixmap pspm;
    QPixmap pdfpm;

#include "scribusapi.h"

/**
  *@author Franz Schmid
  */
class SCRIBUS_API ImIconProvider : public QFileIconProvider
{
    Q_OBJECT
    QStringList fmts;
    QPixmap imagepm;
    QPixmap docpm;
    QPixmap pspm;
    QPixmap pdfpm;

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i put so... and default icon is here ...

modeluser = new QDirModel();
modeluser->setIconProvider(new ImIconProvider());
modeluser->setResolveSymlinks(false);
usertree->setModel(modeluser);
modeluser->setSupportedDragActions(Qt::CopyAction);
usertree->setDragEnabled(true);
usertree->setRootIndex(modeluser->index(ustart));

i can drag file direct to desktop (on model or outsite model) or viceversa .. is running rename delete , open file on clicked all running .. only the icon is fake....

Qt Code:

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class ImIconProvider : public QFileIconProvider
{
    public:
    QStringList file_image;
    QStringList file_text;
    QStringList file_other;
    ImIconProvider();
    ~ImIconProvider() {};
    QIcon icon( const QFileInfo & fi );
    QIcon icon( IconType type );
};
 
ImIconProvider::ImIconProvider()
{
    file_image.clear();
    file_text.clear();
    file_other.clear();
	file_image << "eps" << "gif" << "png" << "jpg" << "jpeg" << "xpm" << "tif" << "tiff" << "bmp" << "pbm" << "pgm" << "ppm" << "xbm" << "xpm" << "psd";
    file_text << "txt" << "cpp" << "h" << "dat" << "conf" << "ini" << "rtf" << "fos" << "xml" << "htm" << "html" << "css" <<"js";
    file_other << "pdf" << "doc" << "pdf" << "exe" << "rar" << "bz" << "tar" << "gz" << "zip"; 
}
 
QIcon ImIconProvider::icon(const QFileInfo &fi)
{
    qDebug() << "### filename " << fi.fileName();  /*  nothing comming!! */
 
	const QString ext = fi.suffix().toLower();
	if (file_image.contains(ext)) {
		return QIcon("image.png");
    } else if (file_image.contains(ext)) {
        return QIcon("text.png");
    } else if (file_image.contains(ext)) {
        return QIcon("other.png");
    } else {
        return QIcon("other.png");
    }
    /* end icon s*/
}
 
QIcon ImIconProvider::icon( IconType type )
{
   return QIcon("other.png");  
}

class ImIconProvider : public QFileIconProvider
{
    public:
    QStringList file_image;
    QStringList file_text;
    QStringList file_other;
    ImIconProvider();
    ~ImIconProvider() {};
    QIcon icon( const QFileInfo & fi );
    QIcon icon( IconType type );
};

ImIconProvider::ImIconProvider()
{
    file_image.clear();
    file_text.clear();
    file_other.clear();
	file_image << "eps" << "gif" << "png" << "jpg" << "jpeg" << "xpm" << "tif" << "tiff" << "bmp" << "pbm" << "pgm" << "ppm" << "xbm" << "xpm" << "psd";
    file_text << "txt" << "cpp" << "h" << "dat" << "conf" << "ini" << "rtf" << "fos" << "xml" << "htm" << "html" << "css" <<"js";
    file_other << "pdf" << "doc" << "pdf" << "exe" << "rar" << "bz" << "tar" << "gz" << "zip"; 
}

QIcon ImIconProvider::icon(const QFileInfo &fi)
{
    qDebug() << "### filename " << fi.fileName();  /*  nothing comming!! */
    
	const QString ext = fi.suffix().toLower();
	if (file_image.contains(ext)) {
		return QIcon("image.png");
    } else if (file_image.contains(ext)) {
        return QIcon("text.png");
    } else if (file_image.contains(ext)) {
        return QIcon("other.png");
    } else {
        return QIcon("other.png");
    }
    /* end icon s*/
}

QIcon ImIconProvider::icon( IconType type )
{
   return QIcon("other.png");  
}

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**patrik08** · 29th March 2007, 13:31

QFileDialog display correct all icon (QDirModel NO!) .... so if you take QFileIconProvider from QFileDialog

and done to model this is not running ... i suppose a BUG!

Qt Code:

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#include <QtGui>
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
 
    QDirModel model;
    model.setIconProvider(QFileDialog::iconProvider());
    QTreeView tree;
    tree.setModel(&model);
    tree.setWindowTitle(QObject::tr("Dir View"));
    tree.resize(640, 480);
    tree.show();
 
    return app.exec();
}

#include <QtGui>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QDirModel model;
    model.setIconProvider(QFileDialog::iconProvider());
    QTreeView tree;
    tree.setModel(&model);
    tree.setWindowTitle(QObject::tr("Dir View"));
    tree.resize(640, 480);
    tree.show();

    return app.exec();
}

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