Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Get simple (text) drag and drop case working with drop source.

Browse Source 
We ended up not needing the underlying QMimeData-based implementation, as the classes sitting on top of it
bypassed it anyway. It now treats the hierarchy as a pure data storage mechanism, generating the
QMimeData when drag-drop is initiated.
This commit is contained in:
Jay Nabonne
2019-01-28 15:30:25 +00:00
parent ea4c7120ff
commit 0dc1654ab6
4 changed files with 112 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

88
src/qt/dnd.cpp
View File

@@ -11,6 +11,60 @@
#if wxUSE_DRAG_AND_DROP
#include "wx/dnd.h"
#include "wx/scopedarray.h"
#include "wx/qt/private/converter.h"
#include <QDrag>
#include <QWidget>
#include <QMimeData>
namespace
{
wxDragResult DropActionToDragResult(Qt::DropAction action)
{
switch ( action )
{
case Qt::IgnoreAction:
return wxDragCancel;
case Qt::CopyAction:
return wxDragCopy;
case Qt::MoveAction:
return wxDragMove;
case Qt::LinkAction:
return wxDragLink;
default:
return wxDragNone;
}
}
void AddDataFormat(wxDataObject* dataObject, QMimeData* mimeData, const wxDataFormat& format)
{
const size_t data_size = dataObject->GetDataSize(format);
QByteArray data(static_cast<int>(data_size), Qt::Initialization());
dataObject->GetDataHere(format, data.data());
mimeData->setData(wxQtConvertString(format.GetMimeType()), data);
}
QMimeData* CreateMimeData(wxDataObject* dataObject)
{
QMimeData* mimeData = new QMimeData();
const size_t count = dataObject->GetFormatCount();
wxScopedArray<wxDataFormat> array(dataObject->GetFormatCount());
dataObject->GetAllFormats(array.get());
for ( size_t i = 0; i < count; i++ )
{
AddDataFormat(dataObject, mimeData, array[i]);
}
return mimeData;
}
}
wxDropTarget::wxDropTarget(wxDataObject *WXUNUSED(dataObject))
{
@@ -39,25 +93,47 @@ wxDataFormat wxDropTarget::GetMatchingPair()
//##############################################################################
wxDropSource::wxDropSource( wxWindow *WXUNUSED(win),
wxDropSource::wxDropSource( wxWindow *win,
const wxIcon &WXUNUSED(copy),
const wxIcon &WXUNUSED(move),
const wxIcon &WXUNUSED(none))
: m_parentWindow(win)
{
}
wxDropSource::wxDropSource( wxDataObject& WXUNUSED(data),
wxWindow *WXUNUSED(win),
wxDropSource::wxDropSource( wxDataObject& data,
wxWindow *win,
const wxIcon &WXUNUSED(copy),
const wxIcon &WXUNUSED(move),
const wxIcon &WXUNUSED(none))
: m_parentWindow(win)
{
SetData(data);
}
wxDragResult wxDropSource::DoDragDrop(int WXUNUSED(flags))
wxDragResult wxDropSource::DoDragDrop(int flags /*=wxDrag_CopyOnly*/)
{
return wxDragResult();
wxCHECK_MSG(m_data != NULL, wxDragNone, wxT("No data in wxDropSource!"));
wxCHECK_MSG(m_parentWindow != NULL, wxDragNone, wxT("NULL parent window in wxDropSource!"));
QDrag drag(m_parentWindow->GetHandle());
drag.setMimeData(CreateMimeData(m_data));
Qt::DropActions actions = Qt::CopyAction | Qt::MoveAction;
Qt::DropAction defaultAction = Qt::CopyAction;
switch ( flags )
{
case wxDrag_CopyOnly:
actions = Qt::CopyAction;
break;
case wxDrag_DefaultMove:
defaultAction = Qt::MoveAction;
break;
default:
break;
}
return DropActionToDragResult(drag.exec(actions, defaultAction));
}
#endif // wxUSE_DRAG_AND_DROP