VeSTige: added support for d'n'd DLL files onto VeSTige instrument

This commit allows the user to drag'n'drop DLL files onto VeSTige
instrument. Furthermore VeSTige now registers itself as handler for
loading DLL files.
(cherry picked from commit 1b77346ded)

plugins/vestige/vestige.cpp

@@ -25,6 +25,7 @@
 
 #include "vestige.h"
 
+#include <QtGui/QDropEvent>
 #include <QtGui/QFileDialog>
 #include <QtGui/QMessageBox>
 #include <QtGui/QPainter>
@@ -37,6 +38,7 @@
 #include "instrument_track.h"
 #include "vst_plugin.h"
 #include "pixmap_button.h"
+#include "string_pair_drag.h"
 #include "text_float.h"
 #include "tooltip.h"
 
@@ -57,7 +59,7 @@ plugin::descriptor vestige_plugin_descriptor =
 	0x0100,
 	plugin::Instrument,
 	new pluginPixmapLoader( "logo" ),
-	NULL,
+	"dll",
 	NULL
 } ;
 
@@ -252,7 +254,7 @@ vestigeInstrumentView::vestigeInstrumentView( instrument * _instrument,
 	}
 
 	m_openPluginButton = new pixmapButton( this, "" );
-	m_openPluginButton->setCheckable( FALSE );
+	m_openPluginButton->setCheckable( false );
 	m_openPluginButton->setCursor( Qt::PointingHandCursor );
 	m_openPluginButton->move( 218, 79 );
 	m_openPluginButton->setActiveGraphic( PLUGIN_NAME::getIconPixmap(
@@ -285,6 +287,8 @@ vestigeInstrumentView::vestigeInstrumentView( instrument * _instrument,
 	note_off_all_btn->setFont( pointSize<8>( note_off_all_btn->font() ) );
 	connect( note_off_all_btn, SIGNAL( clicked() ), this,
 							SLOT( noteOffAll() ) );
+
+	setAcceptDrops( true );
 }
 
 
@@ -391,6 +395,46 @@ void vestigeInstrumentView::noteOffAll( void )
 
 
 
+void vestigeInstrumentView::dragEnterEvent( QDragEnterEvent * _dee )
+{
+	if( _dee->mimeData()->hasFormat( stringPairDrag::mimeType() ) )
+	{
+		QString txt = _dee->mimeData()->data(
+						stringPairDrag::mimeType() );
+		if( txt.section( ':', 0, 0 ) == "vstplugin" )
+		{
+			_dee->acceptProposedAction();
+		}
+		else
+		{
+			_dee->ignore();
+		}
+	}
+	else
+	{
+		_dee->ignore();
+	}
+}
+
+
+
+
+void vestigeInstrumentView::dropEvent( QDropEvent * _de )
+{
+	QString type = stringPairDrag::decodeKey( _de );
+	QString value = stringPairDrag::decodeValue( _de );
+	if( type == "vstplugin" )
+	{
+		m_vi->loadFile( value );
+		_de->accept();
+		return;
+	}
+	_de->ignore();
+}
+
+
+
+
 void vestigeInstrumentView::paintEvent( QPaintEvent * )
 {
 	QPainter p( this );
@@ -403,7 +447,7 @@ void vestigeInstrumentView::paintEvent( QPaintEvent * )
 					:
 				tr( "No VST-plugin loaded" );
 	QFont f = p.font();
-	f.setBold( TRUE );
+	f.setBold( true );
 	p.setFont( pointSize<10>( f ) );
 	p.setPen( QColor( 32, 160, 54 ) );
 
@@ -413,7 +457,7 @@ void vestigeInstrumentView::paintEvent( QPaintEvent * )
 	if( m_vi->m_plugin != NULL )
 	{
 		p.setPen( QColor( 251, 41, 8 ) );
-		f.setBold( FALSE );
+		f.setBold( false );
 		p.setFont( pointSize<8>( f ) );
 		p.drawText( 10, 114, tr( "by" ) + " " +
 					m_vi->m_plugin->vendorString() );

plugins/vestige/vestige.h

@@ -1,7 +1,7 @@
 /*
  * vestige.h - instrument VeSTige for hosting VST-plugins
  *
- * Copyright (c) 2005-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2005-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  * 
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -98,11 +98,13 @@ public:
 
 protected slots:
 	void openPlugin( void );
-	void noteOffAll( void );
 	void toggleGUI( void );
+	void noteOffAll( void );
 
 
 protected:
+	virtual void dragEnterEvent( QDragEnterEvent * _dee );
+	virtual void dropEvent( QDropEvent * _de );
 	virtual void paintEvent( QPaintEvent * _pe );