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188 lines
3.9 KiB
188 lines
3.9 KiB
/****************************************************************************
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**
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** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "main.h"
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const char* red_icon[]={
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"16 16 2 1",
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"r c red",
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". c None",
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"................",
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"................",
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"..rrrrrrrrrrrr..",
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"..rrrrrrrrrrrr..",
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"..rrrrrrrrrrrr..",
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"..rrr......rrr..",
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"..rrr......rrr..",
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"..rrr......rrr..",
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"..rrr......rrr..",
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"..rrr......rrr..",
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"..rrr......rrr..",
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"..rrrrrrrrrrrr..",
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"..rrrrrrrrrrrr..",
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"..rrrrrrrrrrrr..",
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"................",
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"................"};
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const char* blue_icon[]={
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"16 16 2 1",
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"b c blue",
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". c None",
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"................",
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"................",
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"..bbbbbbbbbbbb..",
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"..bbbbbbbbbbbb..",
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"..bbbbbbbbbbbb..",
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"..bbb......bbb..",
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"..bbb......bbb..",
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"..bbb......bbb..",
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"..bbb......bbb..",
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"..bbb......bbb..",
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"..bbb......bbb..",
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"..bbbbbbbbbbbb..",
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"..bbbbbbbbbbbb..",
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"..bbbbbbbbbbbb..",
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"................",
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"................"};
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const char* green_icon[]={
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"16 16 2 1",
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"g c green",
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". c None",
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"................",
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"................",
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"..gggggggggggg..",
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"..gggggggggggg..",
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"..gggggggggggg..",
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"..ggg......ggg..",
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"..ggg......ggg..",
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"..ggg......ggg..",
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"..ggg......ggg..",
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"..ggg......ggg..",
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"..ggg......ggg..",
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"..gggggggggggg..",
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"..gggggggggggg..",
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"..gggggggggggg..",
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"................",
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"................"};
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// ListBox -- low level drag and drop
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DDListBox::DDListBox( QWidget * parent, const char * name, WFlags f ) :
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QListBox( parent, name, f )
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{
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setAcceptDrops( TRUE );
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dragging = FALSE;
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}
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void DDListBox::dragEnterEvent( QDragEnterEvent *evt )
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{
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if ( QTextDrag::canDecode( evt ) )
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evt->accept();
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}
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void DDListBox::dropEvent( QDropEvent *evt )
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{
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QString text;
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if ( QTextDrag::decode( evt, text ) )
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insertItem( text );
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}
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void DDListBox::mousePressEvent( QMouseEvent *evt )
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{
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QListBox::mousePressEvent( evt );
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dragging = TRUE;
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}
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void DDListBox::mouseMoveEvent( QMouseEvent * )
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{
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if ( dragging ) {
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QDragObject *d = new QTextDrag( currentText(), this );
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d->dragCopy(); // do NOT delete d.
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dragging = FALSE;
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}
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}
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// IconViewIcon -- high level drag and drop
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bool DDIconViewItem::acceptDrop( const QMimeSource *mime ) const
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{
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if ( mime->provides( "text/plain" ) )
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return TRUE;
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return FALSE;
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}
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void DDIconViewItem::dropped( QDropEvent *evt, const QValueList<QIconDragItem>& )
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{
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QString label;
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if ( QTextDrag::decode( evt, label ) )
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setText( label );
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}
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// IconView -- high level drag and drop
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QDragObject *DDIconView::dragObject()
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{
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return new QTextDrag( currentItem()->text(), this );
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}
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void DDIconView::slotNewItem( QDropEvent *evt, const QValueList<QIconDragItem>& )
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{
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QString label;
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if ( QTextDrag::decode( evt, label ) ) {
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DDIconViewItem *item = new DDIconViewItem( this, label );
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item->setRenameEnabled( TRUE );
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}
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}
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int main( int argc, char *argv[] )
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{
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QApplication app( argc, argv );
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// Create and show the widgets
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QSplitter *split = new QSplitter();
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DDIconView *iv = new DDIconView( split );
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(void) new DDListBox( split );
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app.setMainWidget( split );
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split->resize( 600, 400 );
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split->show();
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// Set up the connection so that we can drop items into the icon view
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QObject::connect(
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iv, SIGNAL(dropped(QDropEvent*, const QValueList<QIconDragItem>&)),
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iv, SLOT(slotNewItem(QDropEvent*, const QValueList<QIconDragItem>&)));
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// Populate the QIconView with icons
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DDIconViewItem *item;
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item = new DDIconViewItem( iv, "Red", QPixmap( red_icon ) );
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item->setRenameEnabled( TRUE );
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item = new DDIconViewItem( iv, "Green", QPixmap( green_icon ) );
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item->setRenameEnabled( TRUE );
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item = new DDIconViewItem( iv, "Blue", QPixmap( blue_icon ) );
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item->setRenameEnabled( TRUE );
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return app.exec();
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}
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