e55bc9a4ff
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@19226 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
531 lines
18 KiB
C++
531 lines
18 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: dnd.cpp
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// Purpose: wxDropTarget, wxDropSource, wxDataObject implementation
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// Author: AUTHOR
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// Modified by:
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// Created: ??/??/98
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// RCS-ID: $Id$
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// Copyright: (c) 1998 AUTHOR
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "dnd.h"
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#endif
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#include "wx/defs.h"
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#if wxUSE_DRAG_AND_DROP
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#include "wx/dnd.h"
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#include "wx/window.h"
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#include "wx/toplevel.h"
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#include "wx/app.h"
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#include "wx/gdicmn.h"
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#include "wx/mac/private.h"
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// ----------------------------------------------------------------------------
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// global
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// ----------------------------------------------------------------------------
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void wxMacEnsureTrackingHandlersInstalled() ;
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typedef struct
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{
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wxWindow* m_currentTargetWindow ;
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wxDropTarget* m_currentTarget ;
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wxDropSource* m_currentSource ;
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} MacTrackingGlobals ;
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MacTrackingGlobals gTrackingGlobals ;
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//----------------------------------------------------------------------------
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// wxDropTarget
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//----------------------------------------------------------------------------
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wxDropTarget::wxDropTarget( wxDataObject *data )
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: wxDropTargetBase( data )
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{
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wxMacEnsureTrackingHandlersInstalled() ;
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}
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wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
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wxCoord WXUNUSED(y),
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wxDragResult def )
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{
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return CurrentDragHasSupportedFormat() ? def : wxDragNone;
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}
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bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
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{
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if (!m_dataObject)
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return FALSE;
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return CurrentDragHasSupportedFormat() ;
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}
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wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
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wxDragResult def )
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{
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if (!m_dataObject)
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return wxDragNone;
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if (!CurrentDragHasSupportedFormat())
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return wxDragNone;
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return GetData() ? def : wxDragNone;
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}
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bool wxDropTarget::CurrentDragHasSupportedFormat()
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{
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bool supported = false ;
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if ( gTrackingGlobals.m_currentSource != NULL )
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{
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wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
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if ( data )
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{
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size_t formatcount = data->GetFormatCount() ;
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wxDataFormat *array = new wxDataFormat[ formatcount ];
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data->GetAllFormats( array );
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for (size_t i = 0; !supported && i < formatcount ; i++)
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{
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wxDataFormat format = array[i] ;
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if ( m_dataObject->IsSupported( format ) )
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{
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supported = true ;
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break ;
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}
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}
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delete[] array ;
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}
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}
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if ( !supported )
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{
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UInt16 items ;
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OSErr result;
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CountDragItems((DragReference)m_currentDrag, &items);
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for (UInt16 index = 1; index <= items && supported == false ; ++index)
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{
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ItemReference theItem;
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FlavorType theType ;
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UInt16 flavors = 0 ;
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GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
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CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
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for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
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{
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result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
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if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
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{
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supported = true ;
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break ;
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}
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}
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}
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}
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return supported ;
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}
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bool wxDropTarget::GetData()
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{
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if (!m_dataObject)
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return FALSE;
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if ( !CurrentDragHasSupportedFormat() )
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return FALSE ;
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bool transferred = false ;
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if ( gTrackingGlobals.m_currentSource != NULL )
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{
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wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
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if ( data )
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{
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size_t formatcount = data->GetFormatCount() ;
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wxDataFormat *array = new wxDataFormat[ formatcount ];
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data->GetAllFormats( array );
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for (size_t i = 0; !transferred && i < formatcount ; i++)
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{
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wxDataFormat format = array[i] ;
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if ( m_dataObject->IsSupported( format ) )
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{
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int size = data->GetDataSize( format );
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transferred = true ;
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if (size == 0)
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{
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m_dataObject->SetData(format , 0 , 0 ) ;
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}
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else
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{
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char *d = new char[size];
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data->GetDataHere( format , (void*) d );
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m_dataObject->SetData( format , size , d ) ;
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delete[] d ;
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}
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}
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}
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delete[] array ;
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}
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}
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if ( !transferred )
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{
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UInt16 items ;
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OSErr result;
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bool firstFileAdded = false ;
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CountDragItems((DragReference)m_currentDrag, &items);
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for (UInt16 index = 1; index <= items; ++index)
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{
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ItemReference theItem;
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FlavorType theType ;
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UInt16 flavors = 0 ;
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GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
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CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
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for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
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{
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result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
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wxDataFormat format(theType) ;
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if ( m_dataObject->IsSupportedFormat( format ) )
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{
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FlavorFlags theFlags;
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result = GetFlavorFlags((DragReference)m_currentDrag, theItem, theType, &theFlags);
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if (result == noErr)
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{
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Size dataSize ;
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Ptr theData ;
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GetFlavorDataSize((DragReference)m_currentDrag, theItem, theType, &dataSize);
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if ( theType == 'TEXT' )
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{
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// this increment is only valid for allocating, on the next GetFlavorData
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// call it is reset again to the original value
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dataSize++ ;
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}
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theData = new char[dataSize];
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GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L);
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if( theType == 'TEXT' )
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{
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theData[dataSize]=0 ;
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if ( wxApp::s_macDefaultEncodingIsPC )
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{
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wxMacConvertToPC((char*)theData,(char*)theData,dataSize) ;
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}
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m_dataObject->SetData( format, dataSize, theData );
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}
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else if ( theType == kDragFlavorTypeHFS )
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{
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HFSFlavor* theFile = (HFSFlavor*) theData ;
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wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
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if ( firstFileAdded )
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((wxFileDataObject*)m_dataObject)->AddFile( name ) ;
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else
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{
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((wxFileDataObject*)m_dataObject)->SetData( 0 , name.c_str() ) ;
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firstFileAdded = true ;
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}
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}
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else
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{
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m_dataObject->SetData( format, dataSize, theData );
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}
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delete[] theData;
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}
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break ;
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}
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}
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}
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}
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return TRUE ;
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}
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//-------------------------------------------------------------------------
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// wxDropSource
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//-------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// drag request
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wxDropSource::wxDropSource(wxWindow *win,
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const wxIcon &iconCopy,
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const wxIcon &iconMove,
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const wxIcon &iconNone)
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{
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wxMacEnsureTrackingHandlersInstalled() ;
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m_window = win;
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}
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wxDropSource::wxDropSource(wxDataObject& data,
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wxWindow *win,
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const wxIcon &iconCopy,
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const wxIcon &iconMove,
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const wxIcon &iconNone)
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{
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wxMacEnsureTrackingHandlersInstalled() ;
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SetData( data );
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m_window = win;
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}
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wxDropSource::~wxDropSource()
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{
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}
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wxDragResult wxDropSource::DoDragDrop(int WXUNUSED(flags))
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{
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wxASSERT_MSG( m_data, wxT("Drop source: no data") );
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if (!m_data)
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return (wxDragResult) wxDragNone;
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if (m_data->GetFormatCount() == 0)
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return (wxDragResult) wxDragNone;
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OSErr result;
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DragReference theDrag;
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RgnHandle dragRegion;
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if ((result = NewDrag(&theDrag)))
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{
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return wxDragNone ;
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}
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// add data to drag
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size_t formatCount = m_data->GetFormatCount() ;
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wxDataFormat *formats = new wxDataFormat[formatCount] ;
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m_data->GetAllFormats( formats ) ;
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ItemReference theItem = 1 ;
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for ( size_t i = 0 ; i < formatCount ; ++i )
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{
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size_t dataSize = m_data->GetDataSize( formats[i] ) ;
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Ptr dataPtr = new char[dataSize] ;
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m_data->GetDataHere( formats[i] , dataPtr ) ;
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OSType type = formats[i].GetFormatId() ;
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if ( type == 'TEXT' )
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{
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dataSize-- ;
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if ( wxApp::s_macDefaultEncodingIsPC )
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{
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wxMacConvertFromPC((char*)dataPtr) ;
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}
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AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
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}
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else if (type == kDragFlavorTypeHFS )
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{
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HFSFlavor theFlavor ;
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OSErr err = noErr;
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CInfoPBRec cat;
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wxMacFilename2FSSpec( dataPtr , &theFlavor.fileSpec ) ;
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cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
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cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
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cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
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cat.hFileInfo.ioFDirIndex = 0;
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err = PBGetCatInfoSync(&cat);
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if (err == noErr )
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{
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theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
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if (theFlavor.fileSpec.parID == fsRtParID) {
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theFlavor.fileCreator = 'MACS';
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theFlavor.fileType = 'disk';
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} else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0) {
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theFlavor.fileCreator = 'MACS';
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theFlavor.fileType = 'fold';
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} else {
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theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
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theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
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}
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AddDragItemFlavor(theDrag, theItem, type , &theFlavor, sizeof(theFlavor), 0);
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}
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}
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else
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{
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AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
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}
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delete[] dataPtr ;
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}
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delete[] formats ;
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dragRegion = NewRgn();
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RgnHandle tempRgn = NewRgn() ;
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EventRecord* ev = (EventRecord*) wxTheApp->MacGetCurrentEvent() ;
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const short dragRegionOuterBoundary = 10 ;
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const short dragRegionInnerBoundary = 9 ;
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SetRectRgn( dragRegion , ev->where.h - dragRegionOuterBoundary ,
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ev->where.v - dragRegionOuterBoundary ,
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ev->where.h + dragRegionOuterBoundary ,
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ev->where.v + dragRegionOuterBoundary ) ;
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SetRectRgn( tempRgn , ev->where.h - dragRegionInnerBoundary ,
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ev->where.v - dragRegionInnerBoundary ,
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ev->where.h + dragRegionInnerBoundary ,
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ev->where.v + dragRegionInnerBoundary ) ;
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DiffRgn( dragRegion , tempRgn , dragRegion ) ;
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DisposeRgn( tempRgn ) ;
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// TODO:work with promises in order to return data only when drag
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// was successfully completed
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gTrackingGlobals.m_currentSource = this ;
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result = TrackDrag(theDrag, ev , dragRegion);
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DisposeRgn(dragRegion);
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DisposeDrag(theDrag);
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gTrackingGlobals.m_currentSource = NULL ;
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return wxDragCopy ;
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}
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bool gTrackingGlobalsInstalled = false ;
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// passing the globals via refcon is not needed by the CFM and later architectures anymore
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// but I'll leave it in there, just in case...
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pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
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void *handlerRefCon, DragReference theDrag) ;
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pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
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DragReference theDrag) ;
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void wxMacEnsureTrackingHandlersInstalled()
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{
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if( !gTrackingGlobalsInstalled )
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{
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OSErr result;
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result = InstallTrackingHandler(NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L,&gTrackingGlobals);
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wxASSERT( result == noErr ) ;
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result = InstallReceiveHandler(NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals);
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wxASSERT( result == noErr ) ;
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gTrackingGlobalsInstalled = true ;
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}
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}
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pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
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void *handlerRefCon, DragReference theDrag)
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{
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MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
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Point mouse, localMouse;
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DragAttributes attributes;
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GetDragAttributes(theDrag, &attributes);
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wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow ) ;
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switch(theMessage)
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{
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case kDragTrackingEnterHandler:
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break;
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case kDragTrackingLeaveHandler:
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break;
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case kDragTrackingEnterWindow:
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trackingGlobals->m_currentTargetWindow = NULL ;
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trackingGlobals->m_currentTarget = NULL ;
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break;
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case kDragTrackingInWindow:
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if (toplevel == NULL)
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break;
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GetDragMouse(theDrag, &mouse, 0L);
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localMouse = mouse;
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GlobalToLocal(&localMouse);
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// if (attributes & kDragHasLeftSenderWindow)
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{
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wxPoint point(localMouse.h , localMouse.v) ;
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wxWindow *win = NULL ;
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toplevel->MacGetWindowFromPointSub( point , &win ) ;
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int localx , localy ;
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localx = localMouse.h ;
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localy = localMouse.v ;
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//TODO : should we use client coordinates
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if ( win )
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win->MacRootWindowToWindow( &localx , &localy ) ;
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if ( win != trackingGlobals->m_currentTargetWindow )
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{
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if ( trackingGlobals->m_currentTargetWindow )
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{
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// this window is left
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if ( trackingGlobals->m_currentTarget )
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{
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HideDragHilite(theDrag);
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trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
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trackingGlobals->m_currentTarget->OnLeave() ;
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trackingGlobals->m_currentTarget = NULL;
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trackingGlobals->m_currentTargetWindow = NULL ;
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}
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}
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if ( win )
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{
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// this window is entered
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trackingGlobals->m_currentTargetWindow = win ;
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trackingGlobals->m_currentTarget = win->GetDropTarget() ;
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if ( trackingGlobals->m_currentTarget )
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{
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trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
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if ( trackingGlobals->m_currentTarget->OnEnter(
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localx , localy , wxDragCopy ) != wxDragNone )
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{
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int x , y ;
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x = y = 0 ;
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win->MacWindowToRootWindow( &x , &y ) ;
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RgnHandle hiliteRgn = NewRgn() ;
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SetRectRgn( hiliteRgn , x , y , x+win->GetSize().x ,y+win->GetSize().y) ;
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ShowDragHilite(theDrag, hiliteRgn, true);
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DisposeRgn( hiliteRgn ) ;
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}
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}
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}
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}
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else
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{
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if( trackingGlobals->m_currentTarget )
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{
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trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
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trackingGlobals->m_currentTarget->OnDragOver(
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localx , localy , wxDragCopy ) ;
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}
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}
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}
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// MyTrackItemUnderMouse(localMouse, theWindow);
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break;
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case kDragTrackingLeaveWindow:
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if (trackingGlobals->m_currentTarget)
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{
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trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
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trackingGlobals->m_currentTarget->OnLeave() ;
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HideDragHilite(theDrag);
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trackingGlobals->m_currentTarget = NULL ;
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}
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trackingGlobals->m_currentTargetWindow = NULL ;
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break;
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}
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return(noErr);
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}
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pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow,
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void *handlerRefCon,
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DragReference theDrag)
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{
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MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
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if ( trackingGlobals->m_currentTarget )
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{
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Point mouse,localMouse ;
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int localx,localy ;
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trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
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GetDragMouse(theDrag, &mouse, 0L);
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localMouse = mouse;
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GlobalToLocal(&localMouse);
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localx = localMouse.h ;
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localy = localMouse.v ;
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//TODO : should we use client coordinates
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if ( trackingGlobals->m_currentTargetWindow )
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trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx , &localy ) ;
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if ( trackingGlobals->m_currentTarget->OnDrop( localx , localy ) )
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{
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trackingGlobals->m_currentTarget->OnData( localx , localy , wxDragCopy ) ;
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}
|
|
}
|
|
return(noErr);
|
|
}
|
|
#endif
|