fileiconview-main-cpp.html

qtopiaphone英文帮助,用于初学者和开发人员,初学者可以用来学习,开发人员可以用来资料查询.

    for ( ; item; item = (QtFileIconViewItem*)item-&gt;<a href="qiconviewitem.html#005b99">nextItem</a>() )
        item-&gt;viewModeChanged( vm );

    <a href="qiconview.html#9fb7be">arrangeItemsInGrid</a>();
}
</pre>


  <hr>

  Header file of the mainwindow: <pre>/****************************************************************************
** &#36;Id&#58; qt/examples/fileiconview/mainwindow.h   2.3.8   edited 2004-05-12 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#ifndef MAINWIN_H
#define MAINWIN_H

#include &lt;<a href="qmainwindow-h.html">qmainwindow.h</a>&gt;

class QtFileIconView;
class DirectoryView;
class QProgressBar;
class QLabel;
class QComboBox;
class QToolButton;

class FileMainWindow : public QMainWindow
{
    Q_OBJECT

public:
    FileMainWindow();

    QtFileIconView *fileView() { return fileview; }
    DirectoryView *dirList() { return dirlist; }

    void show();

protected:
    void setup();
    void setPathCombo();

    QtFileIconView *fileview;
    DirectoryView *dirlist;
    <a href="qprogressbar.html">QProgressBar</a> *progress;
    <a href="qlabel.html">QLabel</a> *label;
    <a href="qcombobox.html">QComboBox</a> *pathCombo;
    <a href="qtoolbutton.html">QToolButton</a> *upButton, *mkdirButton;

protected slots:
    void directoryChanged( const QString &amp; );
    void slotStartReadDir( int dirs );
    void slotReadNextDir();
    void slotReadDirDone();
    void cdUp();
    void newFolder();
    void changePath( const QString &amp;path );
    void enableUp();
    void disableUp();
    void enableMkdir();
    void disableMkdir();

};

#endif
</pre>


  <hr>

  Implementation of the mainwindow: <pre>/****************************************************************************
** &#36;Id&#58; qt/examples/fileiconview/mainwindow.cpp   2.3.8   edited 2004-05-12 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "mainwindow.h"
#include "qfileiconview.h"
#include "../dirview/dirview.h"

#include &lt;<a href="qsplitter-h.html">qsplitter.h</a>&gt;
#include &lt;<a href="qprogressbar-h.html">qprogressbar.h</a>&gt;
#include &lt;<a href="qlabel-h.html">qlabel.h</a>&gt;
#include &lt;<a href="qstatusbar-h.html">qstatusbar.h</a>&gt;
#include &lt;<a href="qtoolbar-h.html">qtoolbar.h</a>&gt;
#include &lt;<a href="qcombobox-h.html">qcombobox.h</a>&gt;
#include &lt;<a href="qpixmap-h.html">qpixmap.h</a>&gt;
#include &lt;<a href="qtoolbutton-h.html">qtoolbutton.h</a>&gt;
#include &lt;<a href="qdir-h.html">qdir.h</a>&gt;
#include &lt;<a href="qfileinfo-h.html">qfileinfo.h</a>&gt;

static const char* cdtoparent_xpm[]={
    "15 13 3 1",
    ". c None",
    "* c #000000",
    "a c #ffff99",
    "..*****........",
    ".*aaaaa*.......",
    "***************",
    "*aaaaaaaaaaaaa*",
    "*aaaa*aaaaaaaa*",
    "*aaa***aaaaaaa*",
    "*aa*****aaaaaa*",
    "*aaaa*aaaaaaaa*",
    "*aaaa*aaaaaaaa*",
    "*aaaa******aaa*",
    "*aaaaaaaaaaaaa*",
    "*aaaaaaaaaaaaa*",
    "***************"};

static const char* newfolder_xpm[] = {
    "15 14 4 1",
    "   c None",
    ".  c #000000",
    "+  c #FFFF00",
    "@  c #FFFFFF",
    "          .    ",
    "               ",
    "          .    ",
    "       .     . ",
    "  ....  . . .  ",
    " .+@+@.  . .   ",
    "..........  . .",
    ".@+@+@+@+@..   ",
    ".+@+@+@+@+. .  ",
    ".@+@+@+@+@.  . ",
    ".+@+@+@+@+.    ",
    ".@+@+@+@+@.    ",
    ".+@+@+@+@+.    ",
    "...........    "};

FileMainWindow::FileMainWindow()
    : <a href="qmainwindow.html">QMainWindow</a>()
{
    <a href=#207>setup</a>();
}

void <a name="206"></a>FileMainWindow::show()
{
    <a href="qmainwindow.html#eb53e3">QMainWindow::show</a>();
}

void <a name="207"></a>FileMainWindow::setup()
{
    <a href="qsplitter.html">QSplitter</a> *splitter = new <a href="qsplitter.html">QSplitter</a>( this );

    dirlist = new DirectoryView( splitter, "dirlist", TRUE );
    dirlist-&gt;addColumn( "Name" );
    dirlist-&gt;addColumn( "Type" );
    Directory *root = new Directory( dirlist, "/" );
    root-&gt;<a href="qlistviewitem.html#1c5a28">setOpen</a>( TRUE );
    splitter-&gt;<a href="qsplitter.html#33bf83">setResizeMode</a>( dirlist, QSplitter::KeepSize );

    fileview = new QtFileIconView( "/", splitter );
    fileview-&gt;setSelectionMode( QIconView::Extended );

    <a href="qmainwindow.html#fce9ba">setCentralWidget</a>( splitter );

    <a href="qtoolbar.html">QToolBar</a> *toolbar = new <a href="qtoolbar.html">QToolBar</a>( this, "toolbar" );
    <a href="qmainwindow.html#edcb2d">setRightJustification</a>( TRUE );

    (void)new <a href="qlabel.html">QLabel</a>( <a href="qobject.html#2418a9">tr</a>( " Path: " ), toolbar );

    pathCombo = new <a href="qcombobox.html">QComboBox</a>( TRUE, toolbar );
    pathCombo-&gt;setAutoCompletion( TRUE );
    toolbar-&gt;<a href="qtoolbar.html#7b948e">setStretchableWidget</a>( pathCombo );
    <a href="qobject.html#fbde73">connect</a>( pathCombo, SIGNAL( activated( const QString &amp; ) ),
             this, SLOT ( <a href=#215>changePath</a>( const QString &amp; ) ) );

    toolbar-&gt;<a href="qtoolbar.html#af219d">addSeparator</a>();

    <a href="qpixmap.html">QPixmap</a> pix;

    pix = QPixmap( cdtoparent_xpm );
    upButton = new <a href="qtoolbutton.html">QToolButton</a>( pix, "One directory up", QString::null,
                                this, SLOT( <a href=#213>cdUp</a>() ), toolbar, "cd up" );

    pix = QPixmap( newfolder_xpm );
    mkdirButton = new <a href="qtoolbutton.html">QToolButton</a>( pix, "New Folder", QString::null,
                                   this, SLOT( <a href=#214>newFolder</a>() ), toolbar, "new folder" );

    <a href="qobject.html#fbde73">connect</a>( dirlist, SIGNAL( folderSelected( const QString &amp; ) ),
             fileview, SLOT ( setDirectory( const QString &amp; ) ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( <a href=#209>directoryChanged</a>( const QString &amp; ) ),
             this, SLOT( <a href=#209>directoryChanged</a>( const QString &amp; ) ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( startReadDir( int ) ),
             this, SLOT( <a href=#210>slotStartReadDir</a>( int ) ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( readNextDir() ),
             this, SLOT( <a href=#211>slotReadNextDir</a>() ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( readDirDone() ),
             this, SLOT( <a href=#212>slotReadDirDone</a>() ) );

    <a href="qmainwindow.html#712cb8">setDockEnabled</a>( Left, FALSE );
    <a href="qmainwindow.html#712cb8">setDockEnabled</a>( Right, FALSE );

    label = new <a href="qlabel.html">QLabel</a>( <a href="qmainwindow.html#530937">statusBar</a>() );
    <a href="qmainwindow.html#530937">statusBar</a>()-&gt;addWidget( label, 2, TRUE );
    progress = new <a href="qprogressbar.html">QProgressBar</a>( <a href="qmainwindow.html#530937">statusBar</a>() );
    <a href="qmainwindow.html#530937">statusBar</a>()-&gt;addWidget( progress, 1, TRUE );

    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( <a href=#216>enableUp</a>() ),
             this, SLOT( <a href=#216>enableUp</a>() ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( <a href=#217>disableUp</a>() ),
             this, SLOT( <a href=#217>disableUp</a>() ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( <a href=#218>enableMkdir</a>() ),
             this, SLOT( <a href=#218>enableMkdir</a>() ) );
    <a href="qobject.html#fbde73">connect</a>( fileview, SIGNAL( <a href=#219>disableMkdir</a>() ),
             this, SLOT( <a href=#219>disableMkdir</a>() ) );
}

void <a name="208"></a>FileMainWindow::setPathCombo()
{
    <a href="qstring.html">QString</a> dir = caption();
    int i = 0;
    bool found = FALSE;
    for ( i = 0; i &lt; pathCombo-&gt;count(); ++i ) {
        if ( pathCombo-&gt;text( i ) == dir) {
            found = TRUE;
            break;
        }
    }

    if ( found )
        pathCombo-&gt;setCurrentItem( i );
    else {
        pathCombo-&gt;insertItem( dir );
        pathCombo-&gt;setCurrentItem( pathCombo-&gt;count() - 1 );
    }

}

void <a name="209"></a>FileMainWindow::directoryChanged( const QString &amp;dir )
{
    <a href="qwidget.html#d6a291">setCaption</a>( dir );
    <a href=#208>setPathCombo</a>();
}

void <a name="210"></a>FileMainWindow::slotStartReadDir( int dirs )
{
    label-&gt;setText( <a href="qobject.html#2418a9">tr</a>( " Reading Directory..." ) );
    progress-&gt;reset();
    progress-&gt;setTotalSteps( dirs );
}

void <a name="211"></a>FileMainWindow::slotReadNextDir()
{
    int p = progress-&gt;progress();
    progress-&gt;setProgress( ++p );
}

void <a name="212"></a>FileMainWindow::slotReadDirDone()
{
    label-&gt;setText( <a href="qobject.html#2418a9">tr</a>( " Reading Directory Done." ) );
    progress-&gt;setProgress( progress-&gt;totalSteps() );
}

void <a name="213"></a>FileMainWindow::cdUp()
{
    <a href="qdir.html">QDir</a> dir = fileview-&gt;currentDir();
    dir.<a href="qdir.html#f0fc10">cd</a>( ".." );
    fileview-&gt;setDirectory( dir );
}

void <a name="214"></a>FileMainWindow::newFolder()
{
    fileview-&gt;newDirectory();
}

void <a name="215"></a>FileMainWindow::changePath( const QString &amp;path )
{
    if ( <a href="qfileinfo.html">QFileInfo</a>( path ).exists() )
        fileview-&gt;setDirectory( path );
    else
        <a href=#208>setPathCombo</a>();
}

void <a name="216"></a>FileMainWindow::enableUp()
{
    upButton-&gt;setEnabled( TRUE );
}

void <a name="217"></a>FileMainWindow::disableUp()
{
    upButton-&gt;setEnabled( FALSE );
}

void <a name="218"></a>FileMainWindow::enableMkdir()
{
    mkdirButton-&gt;setEnabled( TRUE );
}

void <a name="219"></a>FileMainWindow::disableMkdir()
{
    mkdirButton-&gt;setEnabled( FALSE );
}
</pre>


  <hr>

  Main:
<pre>/****************************************************************************
** &#36;Id&#58; qt/examples/fileiconview/main.cpp   2.3.8   edited 2004-05-12 $
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "mainwindow.h"
#include "qfileiconview.h"

#include &lt;<a name="qapplication.h"></a><a href="qapplication-h.html">qapplication.h</a>&gt;

int main( int argc, char **argv )
{
    <a name="QApplication"></a><a href="qapplication.html">QApplication</a> a( argc, argv );

    FileMainWindow mw;
    mw.<a name="resize"></a><a href="qwidget.html#ff9d07">resize</a>( 680, 480 );
    a.<a name="setMainWidget"></a><a href="qapplication.html#7ad759">setMainWidget</a>( &amp;mw );
    mw.fileView()-&gt;setDirectory( "/" );
    mw.<a name="show"></a><a href="qmainwindow.html#eb53e3">show</a>();
    return a.<a name="exec"></a><a href="qapplication.html#84c7bf">exec</a>();
}
</pre>
<p><address><hr><div align="center">
<table width="100%" cellspacing="0" border="0"><tr>
<td>Copyright