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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/simple_dd-example.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/simple_dd-example.html')
| -rw-r--r-- | doc/html/simple_dd-example.html | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/doc/html/simple_dd-example.html b/doc/html/simple_dd-example.html new file mode 100644 index 0000000..8184c76 --- /dev/null +++ b/doc/html/simple_dd-example.html @@ -0,0 +1,305 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/iconview/simple_dd/simple_dd.doc:1 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>Drag and Drop (Simple)</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Drag and Drop (Simple)</h1> + + +<p> +This provides a very simple example of Qt's drag and drop +functionality. +<p> For a more complete example see the <a href="dragdrop-example.html">Drag and Drop example</a>. +<p> <hr> +<p> Header file: +<p> <pre>/**************************************************************************** +** $Id: qt/main.h 3.3.8 edited Jan 11 14:37 $ +** +** Copyright (C) 1992-2007 Trolltech ASA. 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 <<a href="qapplication-h.html">qapplication.h</a>> +#include <<a href="qcursor-h.html">qcursor.h</a>> +#include <<a href="qsplitter-h.html">qsplitter.h</a>> +#include <<a href="qlistbox-h.html">qlistbox.h</a>> +#include <<a href="qiconview-h.html">qiconview.h</a>> +#include <<a href="qpixmap-h.html">qpixmap.h</a>> + +class QDragEnterEvent; +class QDragDropEvent; + + +class DDListBox : public <a href="qlistbox.html">QListBox</a> +{ + <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> +public: + DDListBox( <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0, WFlags f = 0 ); + // Low-level drag and drop + void dragEnterEvent( <a href="qdragenterevent.html">QDragEnterEvent</a> *evt ); + void dropEvent( <a href="qdropevent.html">QDropEvent</a> *evt ); + void mousePressEvent( <a href="qmouseevent.html">QMouseEvent</a> *evt ); + void mouseMoveEvent( <a href="qmouseevent.html">QMouseEvent</a> * ); +private: + int dragging; +}; + + +class DDIconViewItem : public <a href="qiconviewitem.html">QIconViewItem</a> +{ +public: + DDIconViewItem( <a href="qiconview.html">QIconView</a> *parent, const <a href="qstring.html">QString</a>& text, const <a href="qpixmap.html">QPixmap</a>& icon ) : + <a href="qiconviewitem.html">QIconViewItem</a>( parent, text, icon ) {} + DDIconViewItem( <a href="qiconview.html">QIconView</a> *parent, const <a href="qstring.html">QString</a> &text ) : + <a href="qiconviewitem.html">QIconViewItem</a>( parent, text ) {} + // High-level drag and drop + bool acceptDrop( const <a href="qmimesource.html">QMimeSource</a> *mime ) const; + void dropped( <a href="qdropevent.html">QDropEvent</a> *evt, const <a href="qvaluelist.html">QValueList</a><QIconDragItem>& ); +}; + + +class DDIconView : public <a href="qiconview.html">QIconView</a> +{ + Q_OBJECT +public: + DDIconView( <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0, WFlags f = 0 ) : + <a href="qiconview.html">QIconView</a>( parent, name, f ) {} + // High-level drag and drop + <a href="qdragobject.html">QDragObject</a> *dragObject(); +public slots: + void slotNewItem( <a href="qdropevent.html">QDropEvent</a> *evt, const <a href="qvaluelist.html">QValueList</a><QIconDragItem>& list ); +}; + +</pre> + +<p> <hr> +<p> Implementation: +<p> <pre>/**************************************************************************** +** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $ +** +** Copyright (C) 1992-2007 Trolltech ASA. 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 "main.h" + +const char* red_icon[]={ +"16 16 2 1", +"r c red", +". c None", +"................", +"................", +"..rrrrrrrrrrrr..", +"..rrrrrrrrrrrr..", +"..rrrrrrrrrrrr..", +"..rrr......rrr..", +"..rrr......rrr..", +"..rrr......rrr..", +"..rrr......rrr..", +"..rrr......rrr..", +"..rrr......rrr..", +"..rrrrrrrrrrrr..", +"..rrrrrrrrrrrr..", +"..rrrrrrrrrrrr..", +"................", +"................"}; + +const char* blue_icon[]={ +"16 16 2 1", +"b c blue", +". c None", +"................", +"................", +"..bbbbbbbbbbbb..", +"..bbbbbbbbbbbb..", +"..bbbbbbbbbbbb..", +"..bbb......bbb..", +"..bbb......bbb..", +"..bbb......bbb..", +"..bbb......bbb..", +"..bbb......bbb..", +"..bbb......bbb..", +"..bbbbbbbbbbbb..", +"..bbbbbbbbbbbb..", +"..bbbbbbbbbbbb..", +"................", +"................"}; + +const char* green_icon[]={ +"16 16 2 1", +"g c green", +". c None", +"................", +"................", +"..gggggggggggg..", +"..gggggggggggg..", +"..gggggggggggg..", +"..ggg......ggg..", +"..ggg......ggg..", +"..ggg......ggg..", +"..ggg......ggg..", +"..ggg......ggg..", +"..ggg......ggg..", +"..gggggggggggg..", +"..gggggggggggg..", +"..gggggggggggg..", +"................", +"................"}; + + +// ListBox -- low level drag and drop + +<a name="f589"></a>DDListBox::DDListBox( <a href="qwidget.html">QWidget</a> * parent, const char * name, WFlags f ) : + <a href="qlistbox.html">QListBox</a>( parent, name, f ) +{ + <a href="qwidget.html#setAcceptDrops">setAcceptDrops</a>( TRUE ); + dragging = FALSE; +} + + +<a name="x2829"></a>void DDListBox::<a href="qwidget.html#dragEnterEvent">dragEnterEvent</a>( <a href="qdragenterevent.html">QDragEnterEvent</a> *evt ) +{ +<a name="x2827"></a> if ( QTextDrag::<a href="qtextdrag.html#canDecode">canDecode</a>( evt ) ) +<a name="x2819"></a> evt-><a href="qdragmoveevent.html#accept">accept</a>(); +} + + +<a name="x2830"></a>void DDListBox::<a href="qwidget.html#dropEvent">dropEvent</a>( <a href="qdropevent.html">QDropEvent</a> *evt ) +{ + <a href="qstring.html">QString</a> text; + +<a name="x2828"></a> if ( QTextDrag::<a href="qtextdrag.html#decode">decode</a>( evt, text ) ) + <a href="qlistbox.html#insertItem">insertItem</a>( text ); +} + + +<a name="x2832"></a>void DDListBox::<a href="qwidget.html#mousePressEvent">mousePressEvent</a>( <a href="qmouseevent.html">QMouseEvent</a> *evt ) +{ + QListBox::<a href="qwidget.html#mousePressEvent">mousePressEvent</a>( evt ); + dragging = TRUE; +} + + +<a name="x2831"></a>void DDListBox::<a href="qwidget.html#mouseMoveEvent">mouseMoveEvent</a>( <a href="qmouseevent.html">QMouseEvent</a> * ) +{ + if ( dragging ) { + <a href="qdragobject.html">QDragObject</a> *d = new <a href="qtextdrag.html">QTextDrag</a>( currentText(), this ); +<a name="x2818"></a> d-><a href="qdragobject.html#dragCopy">dragCopy</a>(); // do NOT delete d. + dragging = FALSE; + } +} + + +// IconViewIcon -- high level drag and drop + + +<a name="x2822"></a>bool DDIconViewItem::<a href="qiconviewitem.html#acceptDrop">acceptDrop</a>( const <a href="qmimesource.html">QMimeSource</a> *mime ) const +{ +<a name="x2825"></a> if ( mime-><a href="qmimesource.html#provides">provides</a>( "text/plain" ) ) + return TRUE; + return FALSE; +} + + +<a name="x2823"></a>void DDIconViewItem::<a href="qiconviewitem.html#dropped">dropped</a>( <a href="qdropevent.html">QDropEvent</a> *evt, const <a href="qvaluelist.html">QValueList</a><QIconDragItem>& ) +{ + <a href="qstring.html">QString</a> label; + + if ( QTextDrag::<a href="qtextdrag.html#decode">decode</a>( evt, label ) ) + setText( label ); +} + + +// IconView -- high level drag and drop + +<a name="x2820"></a>QDragObject *DDIconView::<a href="qiconview.html#dragObject">dragObject</a>() +{ + return new <a href="qtextdrag.html">QTextDrag</a>( <a href="qiconview.html#currentItem">currentItem</a>()->text(), this ); +} + +void <a name="f588"></a>DDIconView::slotNewItem( <a href="qdropevent.html">QDropEvent</a> *evt, const <a href="qvaluelist.html">QValueList</a><QIconDragItem>& ) +{ + <a href="qstring.html">QString</a> label; + + if ( QTextDrag::<a href="qtextdrag.html#decode">decode</a>( evt, label ) ) { + DDIconViewItem *item = new DDIconViewItem( this, label ); +<a name="x2824"></a> item-><a href="qiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE ); + } +} + + + +int main( int argc, char *argv[] ) +{ + <a href="qapplication.html">QApplication</a> app( argc, argv ); + + // Create and show the widgets + <a href="qsplitter.html">QSplitter</a> *split = new <a href="qsplitter.html">QSplitter</a>(); + DDIconView *iv = new DDIconView( split ); + (void) new DDListBox( split ); + app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( split ); + split-><a href="qwidget.html#resize">resize</a>( 600, 400 ); + split-><a href="qwidget.html#show">show</a>(); + + // Set up the connection so that we can drop items into the icon view + QObject::<a href="qobject.html#connect">connect</a>( +<a name="x2821"></a> iv, SIGNAL(<a href="qiconview.html#dropped">dropped</a>(QDropEvent*, const <a href="qvaluelist.html">QValueList</a><QIconDragItem>&)), + iv, SLOT(slotNewItem(QDropEvent*, const <a href="qvaluelist.html">QValueList</a><QIconDragItem>&))); + + // Populate the QIconView with icons + DDIconViewItem *item; + item = new DDIconViewItem( iv, "Red", QPixmap( red_icon ) ); + item-><a href="qiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE ); + item = new DDIconViewItem( iv, "Green", QPixmap( green_icon ) ); + item-><a href="qiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE ); + item = new DDIconViewItem( iv, "Blue", QPixmap( blue_icon ) ); + item-><a href="qiconviewitem.html#setRenameEnabled">setRenameEnabled</a>( TRUE ); + + return app.<a href="qapplication.html#exec">exec</a>(); +} + + +</pre> + +<p> <p>See also <a href="examples.html">Examples</a>. + +<!-- eof --> +<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>Qt 3.3.8</div> +</table></div></address></body> +</html> |