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Fix wx drag events to actually be keyed off of the Qt dragging state instead of its "drop" events.

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Add "dropped" state to track whether a drop actually occurred or whether the drag ended unsuccessfully.
This commit is contained in:
Jay Nabonne
2019-02-07 11:36:15 +00:00
parent 5279d0bca5
commit 541e7af374
1 changed files with 37 additions and 8 deletions
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45
src/qt/treectrl.cpp
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@@ -103,7 +103,8 @@ class wxQTreeWidget : public wxQtEventSignalHandler<QTreeWidget, wxTreeCtrl>
public:
wxQTreeWidget(wxWindow *parent, wxTreeCtrl *handler) :
wxQtEventSignalHandler(parent, handler),
m_editorFactory(handler)
m_editorFactory(handler),
m_dropped(false)
{
connect(this, &QTreeWidget::currentItemChanged, this, &wxQTreeWidget::OnCurrentItemChanged);
connect(this, &QTreeWidget::itemActivated, this, &wxQTreeWidget::OnItemActivated);
@@ -142,7 +143,7 @@ protected:
QTreeWidget::drawBranches(painter, rect, index);
const int imageIndex = ChooseBestImage(item);
if (imageIndex != -1 )
if ( imageIndex != -1 )
{
wxImageList *imageList = GetHandler()->GetImageList();
wxBitmap bitmap = imageList->GetBitmap(imageIndex);
@@ -228,13 +229,14 @@ private:
EmitEvent(expandedEvent);
}
virtual void dragEnterEvent(QDragEnterEvent* event) wxOVERRIDE
void tryStartDrag(const QMouseEvent *event)
{
wxEventType command = (event->mouseButtons() & Qt::RightButton)
m_dropped = false;
wxEventType command = (event->buttons() & Qt::RightButton)
? wxEVT_TREE_BEGIN_RDRAG
: wxEVT_TREE_BEGIN_DRAG;
QTreeWidgetItem *hitItem = itemAt(event->pos());
wxTreeEvent tree_event(
@@ -250,13 +252,13 @@ private:
EmitEvent(tree_event);
if ( tree_event.IsAllowed() )
if ( !tree_event.IsAllowed() )
{
event->accept();
setState(DragSelectingState);
}
}
virtual void dropEvent(QDropEvent* event) wxOVERRIDE
void endDrag(const QMouseEvent* event)
{
const wxPoint pos = wxQtConvertPoint(event->pos());
QTreeWidgetItem *hitItem = itemAt(event->pos());
@@ -272,6 +274,32 @@ private:
EmitEvent(tree_event);
}
virtual void dropEvent(QDropEvent* event) wxOVERRIDE
{
m_dropped = true;
// We don't want Qt to actually do the drop.
event->ignore();
}
virtual void mouseMoveEvent(QMouseEvent *event) wxOVERRIDE
{
const bool wasDragging = state() == DraggingState;
wxQtEventSignalHandler<QTreeWidget, wxTreeCtrl>::mouseMoveEvent(event);
const bool nowDragging = state() == DraggingState;
if ( !wasDragging && nowDragging )
{
tryStartDrag(event);
}
else if ( wasDragging && !nowDragging )
{
// Only emit "end drag" if we have dropped
// (e.g. not hit escape to cancel).
if ( m_dropped )
endDrag(event);
}
}
int ChooseBestImage(QTreeWidgetItem *item) const
{
int imageIndex = -1;
@@ -306,6 +334,7 @@ private:
typedef std::map<QTreeWidgetItem*,ImageState> ImageStateMap;
ImageStateMap m_imageStates;
bool m_dropped;
};
wxTreeCtrl::wxTreeCtrl() :