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added dnd support to generic wxTreeCtrl

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6146 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2000-02-18 22:12:58 +00:00
parent c4c829aeab
commit 3dbeaa523d
3 changed files with 228 additions and 135 deletions
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289
src/generic/treectrl.cpp
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@@ -53,10 +53,54 @@ WX_DEFINE_OBJARRAY(wxArrayTreeItemIds);
static const int NO_IMAGE = -1;
#define PIXELS_PER_UNIT 10
// -----------------------------------------------------------------------------
// private classes
// -----------------------------------------------------------------------------
// timer used for enabling in-place edit
class WXDLLEXPORT wxTreeRenameTimer: public wxTimer
{
public:
wxTreeRenameTimer( wxTreeCtrl *owner );
void Notify();
private:
wxTreeCtrl *m_owner;
};
// control used for in-place edit
class WXDLLEXPORT wxTreeTextCtrl: public wxTextCtrl
{
public:
wxTreeTextCtrl() { }
wxTreeTextCtrl( wxWindow *parent,
const wxWindowID id,
bool *accept,
wxString *res,
wxTreeCtrl *owner,
const wxString &value = wxEmptyString,
const wxPoint &pos = wxDefaultPosition,
const wxSize &size = wxDefaultSize,
int style = 0,
const wxValidator& validator = wxDefaultValidator,
const wxString &name = wxTextCtrlNameStr );
void OnChar( wxKeyEvent &event );
void OnKillFocus( wxFocusEvent &event );
private:
bool *m_accept;
wxString *m_res;
wxTreeCtrl *m_owner;
wxString m_startValue;
DECLARE_EVENT_TABLE()
DECLARE_DYNAMIC_CLASS(wxTreeTextCtrl);
};
// a tree item
class WXDLLEXPORT wxGenericTreeItem
{
@@ -76,7 +120,7 @@ public:
const wxString& GetText() const { return m_text; }
int GetImage(wxTreeItemIcon which = wxTreeItemIcon_Normal) const
{ return m_images[which]; }
{ return m_images[which]; }
wxTreeItemData *GetData() const { return m_data; }
// returns the current image for the item (depending on its
@@ -242,7 +286,7 @@ wxTreeTextCtrl::wxTreeTextCtrl( wxWindow *parent,
m_accept = accept;
m_owner = owner;
(*m_accept) = FALSE;
(*m_res) = "";
(*m_res) = wxEmptyString;
m_startValue = value;
}
@@ -283,7 +327,6 @@ void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
m_owner->OnRenameAccept();
}
#define PIXELS_PER_UNIT 10
// -----------------------------------------------------------------------------
// wxTreeEvent
// -----------------------------------------------------------------------------
@@ -430,7 +473,7 @@ wxGenericTreeItem *wxGenericTreeItem::HitTest( const wxPoint& point,
{
if ((point.y > m_y) && (point.y < m_y + theTree->GetLineHeight(this)))
{
if (point.y<m_y+theTree->GetLineHeight(this)/2)
if (point.y < m_y+theTree->GetLineHeight(this)/2 )
flags |= wxTREE_HITTEST_ONITEMUPPERPART;
else
flags |= wxTREE_HITTEST_ONITEMLOWERPART;
@@ -563,6 +606,8 @@ void wxTreeCtrl::Init()
m_imageListState = (wxImageList *) NULL;
m_dragCount = 0;
m_isDragging = FALSE;
m_dropTarget = (wxGenericTreeItem *)NULL;
m_renameTimer = new wxTreeRenameTimer( this );
@@ -1663,42 +1708,66 @@ void wxTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &
}
}
void wxTreeCtrl::DrawBorder(wxTreeItemId &item)
void wxTreeCtrl::DrawDropEffect(wxGenericTreeItem *item)
{
if (!item) return;
if ( item )
{
if ( item->HasPlus() )
{
// it's a folder, indicate it by a border
DrawBorder(item);
}
else
{
// draw a line under the drop target because the item will be
// dropped there
DrawLine(item, TRUE /* below */);
}
wxGenericTreeItem *i=item.m_pItem;
wxClientDC dc(this);
PrepareDC( dc );
dc.SetLogicalFunction(wxINVERT);
int w,h,x;
ViewStart(&x,&h); // we only need x
GetClientSize(&w,&h); // we only need w
h=GetLineHeight(i)+1;
// 2 white column at border
dc.DrawRectangle( PIXELS_PER_UNIT*x+2, i->GetY()-1, w-6, h);
SetCursor(wxCURSOR_BULLSEYE);
}
else
{
// can't drop here
SetCursor(wxCURSOR_NO_ENTRY);
}
}
void wxTreeCtrl::DrawLine(wxTreeItemId &item, bool below)
void wxTreeCtrl::DrawBorder(const wxTreeItemId &item)
{
if (!item) return;
wxCHECK_RET( item.IsOk(), _T("invalid item in wxTreeCtrl::DrawLine") );
wxGenericTreeItem *i=item.m_pItem;
wxGenericTreeItem *i = item.m_pItem;
wxClientDC dc(this);
PrepareDC( dc );
dc.SetLogicalFunction(wxINVERT);
dc.SetBrush(*wxTRANSPARENT_BRUSH);
int w = i->GetWidth() + 2;
int h = GetLineHeight(i) + 2;
dc.DrawRectangle( i->GetX() - 1, i->GetY() - 1, w, h);
}
void wxTreeCtrl::DrawLine(const wxTreeItemId &item, bool below)
{
wxCHECK_RET( item.IsOk(), _T("invalid item in wxTreeCtrl::DrawLine") );
wxGenericTreeItem *i = item.m_pItem;
wxClientDC dc(this);
PrepareDC( dc );
dc.SetLogicalFunction(wxINVERT);
int w,h,y;
GetSize(&w,&h);
int x = i->GetX(),
y = i->GetY();
if ( below )
{
y += GetLineHeight(i) - 1;
}
if (below) y=i->GetY()+GetLineHeight(i)-1;
else y=i->GetY();
dc.DrawLine( 0, y, w, y);
dc.DrawLine( x, y, x + i->GetWidth(), y);
}
// -----------------------------------------------------------------------------
@@ -2018,84 +2087,152 @@ void wxTreeCtrl::OnRenameAccept()
void wxTreeCtrl::OnMouse( wxMouseEvent &event )
{
if ( !(event.LeftUp() || event.RightDown() || event.LeftDClick() || event.Dragging()) ) return;
if ( !m_anchor ) return;
// we process left mouse up event (enables in-place edit), right down
// (pass to the user code), left dbl click (activate item) and
// dragging/moving events for items drag-and-drop
if ( !(event.LeftUp() ||
event.RightDown() ||
event.LeftDClick() ||
event.Dragging() ||
((event.Moving() || event.RightUp()) && m_isDragging)) )
{
event.Skip();
return;
}
wxClientDC dc(this);
PrepareDC(dc);
wxCoord x = dc.DeviceToLogicalX( event.GetX() );
wxCoord y = dc.DeviceToLogicalY( event.GetY() );
int flags=0;
int flags = 0;
wxGenericTreeItem *item = m_anchor->HitTest( wxPoint(x,y), this, flags);
bool onButton = flags & wxTREE_HITTEST_ONITEMBUTTON;
if (event.Dragging())
if ( event.Dragging() && !m_isDragging )
{
if (m_dragCount == 0)
m_dragStart = wxPoint(x,y);
m_dragCount++;
if (m_dragCount != 3) return;
if (m_dragCount != 3)
{
// wait until user drags a bit further...
return;
}
int command = wxEVT_COMMAND_TREE_BEGIN_DRAG;
if (event.RightIsDown()) command = wxEVT_COMMAND_TREE_BEGIN_RDRAG;
wxEventType command = event.RightIsDown()
? wxEVT_COMMAND_TREE_BEGIN_RDRAG
: wxEVT_COMMAND_TREE_BEGIN_DRAG;
wxTreeEvent nevent( command, GetId() );
nevent.m_item = m_current;
nevent.SetEventObject(this);
GetEventHandler()->ProcessEvent(nevent);
return;
// by default the dragging is not supported, the user code must
// explicitly allow the event for it to take place
nevent.Veto();
if ( GetEventHandler()->ProcessEvent(nevent) && nevent.IsAllowed() )
{
// we're going to drag this item
m_isDragging = TRUE;
CaptureMouse();
}
}
else if ( event.Moving() )
{
if ( item != m_dropTarget )
{
// unhighlight the previous drop target
DrawDropEffect(m_dropTarget);
m_dropTarget = item;
// highlight the current drop target if any
DrawDropEffect(m_dropTarget);
wxYield();
}
}
else if ( (event.LeftUp() || event.RightUp()) && m_isDragging )
{
// erase the highlighting
DrawDropEffect(m_dropTarget);
// generate the drag end event
wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, GetId());
event.m_item = item;
event.m_pointDrag = wxPoint(x, y);
event.SetEventObject(this);
(void)GetEventHandler()->ProcessEvent(event);
m_isDragging = FALSE;
m_dropTarget = (wxGenericTreeItem *)NULL;
ReleaseMouse();
SetCursor(wxCURSOR_DEFAULT);
wxYield();
}
else
{
// here we process only the messages which happen on tree items
m_dragCount = 0;
}
if (item == NULL) return; /* we hit the blank area */
if (item == NULL) return; /* we hit the blank area */
if (event.RightDown()) {
wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK,GetId());
nevent.m_item=item;
nevent.m_code=0;
nevent.SetEventObject(this);
GetEventHandler()->ProcessEvent(nevent);
return;
}
if ( event.RightDown() )
{
wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, GetId());
nevent.m_item = item;
nevent.m_code = 0;
nevent.SetEventObject(this);
GetEventHandler()->ProcessEvent(nevent);
}
else if ( event.LeftUp() && (item == m_current) &&
(flags & wxTREE_HITTEST_ONITEMLABEL) &&
HasFlag(wxTR_EDIT_LABELS) )
{
m_renameTimer->Start( 100, TRUE );
}
else
{
// how should the selection work for this event?
bool is_multiple, extended_select, unselect_others;
EventFlagsToSelType(GetWindowStyleFlag(),
event.ShiftDown(),
event.ControlDown(),
&is_multiple, &extended_select, &unselect_others);
if (event.LeftUp() && (item == m_current) &&
(flags & wxTREE_HITTEST_ONITEMLABEL) &&
HasFlag(wxTR_EDIT_LABELS) )
{
m_renameTimer->Start( 100, TRUE );
return;
}
if ( onButton )
{
Toggle( item );
if ( is_multiple )
return;
}
// how should the selection work for this event?
bool is_multiple, extended_select, unselect_others;
EventFlagsToSelType(GetWindowStyleFlag(),
event.ShiftDown(),
event.ControlDown(),
&is_multiple, &extended_select, &unselect_others);
SelectItem(item, unselect_others, extended_select);
if (onButton)
{
Toggle( item );
if (is_multiple)
return;
}
SelectItem(item, unselect_others, extended_select);
if (event.LeftDClick())
{
wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
event.m_item = item;
event.m_code = 0;
event.SetEventObject( this );
GetEventHandler()->ProcessEvent( event );
if ( event.LeftDClick() )
{
wxTreeEvent nevent( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
nevent.m_item = item;
nevent.m_code = 0;
nevent.SetEventObject( this );
GetEventHandler()->ProcessEvent( nevent );
}
}
}
}