Merged in from Mahogany. A bit better and safer.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2497 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

user/wxLayout/TODO

@@ -18,10 +18,13 @@ TODO
 
   - UNDO!!
   - replacement of llist in window
+  - selection highlighting is a bit broken
+Improve speed! (See layout problem below!)
 
 The following two probs can probably be fixed by adding the
 RecalculateLayout() method:
- Funny re-layout shows again in sample text.
+Funny re-layout shows again in sample text.
+(Gone after calling layout for all objects before drawing one.)
  Printing works again, but layout at begin of new page is corrupted.
 
 

user/wxLayout/wxllist.cpp

@@ -598,6 +598,11 @@ wxLayoutLine::RecalculatePosition(wxLayoutList *llist)
 void
 wxLayoutLine::RecalculatePositions(int recurse, wxLayoutList *llist)
 {
+   //FIXME: is this really needed? We run Layout() anyway.
+   // Recursing here, drives computation time up exponentially, as
+   // each line will cause all following lines to be recalculated.
+   return;
+   
    wxASSERT(recurse >= 0);
    wxPoint pos = m_Position;
    CoordType height = m_Height;
@@ -1243,7 +1248,8 @@ wxLayoutLine::Copy(wxLayoutList *llist,
    CoordType firstOffset, lastOffset;
 
    if(to == -1) to = GetLength();
-   
+   if(from == to) return;
+      
    wxLOiterator first = FindObject(from, &firstOffset);
    wxLOiterator last  = FindObject(to, &lastOffset);
 
@@ -1562,6 +1568,7 @@ bool
 wxLayoutList::Insert(wxLayoutObject *obj)
 {
    wxASSERT(m_CursorLine);
+   if(! m_CursorLine) m_CursorLine = GetFirstLine();
    SetUpdateRect(m_CursorScreenPos);
    SetUpdateRect(m_CursorScreenPos+m_CursorSize);
    m_CursorLine->Insert(m_CursorPos.x, obj);

user/wxLayout/wxllist.h

@@ -99,10 +99,13 @@ public:
    struct UserData
    {
       UserData() { m_refcount = 1; }
-      void IncRef(void) { m_refcount++; }
-      void DecRef(void) { m_refcount--; if(m_refcount == 0) delete this;}
+      inline void IncRef(void) { m_refcount++; }
+      inline void DecRef(void) { m_refcount--; if(m_refcount == 0) delete this;}
+      inline void SetLabel(const wxString &l) { m_label = l; }
+      inline const wxString & GetLabel(void) const { return m_label; }
    private:
       int m_refcount;
+      wxString m_label;
    protected:
       virtual ~UserData() { wxASSERT(m_refcount == 0); }
       /// prevents gcc from generating stupid warnings
@@ -161,6 +164,7 @@ public:
 
    /** Tells the object about some user data. This data is associated
        with the object and will be deleted at destruction time.
+       It is reference counted.
    */
    void   SetUserData(UserData *data)
       {
@@ -171,8 +175,11 @@ public:
             m_UserData->IncRef();
       }
    
-   /** Return the user data. */
-   void * GetUserData(void) const { if(m_UserData) m_UserData->IncRef(); return m_UserData; }
+   /** Return the user data.
+    Increments the object's reference count. When no longer needed,
+    caller must call DecRef() on the pointer returned.
+   */
+   UserData * GetUserData(void) const { if(m_UserData) m_UserData->IncRef(); return m_UserData; }
 
    /** Makes a copy of this object.
     */
@@ -745,8 +752,8 @@ public:
       { MoveCursorHorizontally(-m_CursorPos.x); }
 
    /// Returns current cursor position.
-   wxPoint GetCursorPos(wxDC &dc) const { return m_CursorPos; }
-   wxPoint GetCursorPos() const { return m_CursorPos; }
+   const wxPoint &GetCursorPos(wxDC &dc) const { return m_CursorPos; }
+   const wxPoint &GetCursorPos() const { return m_CursorPos; }
    
    //@}
 

user/wxLayout/wxlwindow.cpp

@@ -75,6 +75,7 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
                       wxHSCROLL | wxVSCROLL | wxBORDER)
 
 {
+   SetStatusBar(NULL); // don't use statusbar
    m_Editable = false;
    m_doSendEvents = false;
    m_ViewStartX = 0; m_ViewStartY = 0;
@@ -160,23 +161,33 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
    bool found;
    wxLayoutObject *obj = m_llist->FindObjectScreen(dc, findPos,
                                                    &cursorPos, &found);
+   wxLayoutObject::UserData *u = obj ? obj->GetUserData() : NULL;
 
    //has the mouse only been moved?
    if(eventId == WXLOWIN_MENU_MOUSEMOVE)
    {
       // found is only true if we are really over an object, not just
       // behind it
-      if(found && obj && obj->GetUserData() != NULL)
+      if(found && u)
       {
          if(!m_HandCursor)
             SetCursor(wxCURSOR_HAND);
          m_HandCursor = TRUE;
+         if(m_StatusBar && m_StatusFieldLabel != -1) 
+         {
+            const wxString &label = u->GetLabel();
+            if(label.Length())
+               m_StatusBar->SetStatusText(label,
+                                          m_StatusFieldLabel);
+         }
       }
       else
       {
          if(m_HandCursor)
             SetCursor(wxCURSOR_IBEAM);
          m_HandCursor = FALSE;
+         if(m_StatusBar && m_StatusFieldLabel != -1) 
+            m_StatusBar->SetStatusText("", m_StatusFieldLabel);
       }
       if(event.LeftIsDown())
       {
@@ -198,6 +209,7 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
          m_Selecting = false;
          DoPaint(FALSE); 
       }
+      if(u) u->DecRef();
       return;
    }
 
@@ -210,18 +222,24 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
       ScrollToCursor();
       DoPaint(FALSE); // DoPaint suppresses flicker under GTK
    }
+
    if(!m_doSendEvents) // nothing to do
+   {
+      if(u) u->DecRef();
       return;
+   }
 
    // only do the menu if activated, editable and not on a clickable object
    if(eventId == WXLOWIN_MENU_RCLICK
       && IsEditable()
-      && (! obj || (obj && obj->GetUserData() == NULL))
-      )
+      && (! obj || u == NULL))
    {
       PopupMenu(m_PopupMenu, m_ClickPosition.x, m_ClickPosition.y);
+      if(u) u->DecRef();
       return;
    }
+
+   if(u) u->DecRef();
    // find the object at this position
    if(obj)
    {
@@ -412,7 +430,10 @@ void
 wxLayoutWindow::OnKeyUp(wxKeyEvent& event)
 {
    if(event.KeyCode() == WXK_SHIFT && m_llist->IsSelecting())
+   {
       m_llist->EndSelection();
+      m_Selecting = false;
+   }
    event.Skip();
 }
 
@@ -605,6 +626,12 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
 
    ResetDirty();
    m_ScrollToCursor = false;
+   if(m_StatusBar && m_StatusFieldCursor != -1) 
+   {
+      wxString label;
+      label.Printf(_("L:%d C:%d"), m_llist->GetCursorPos().x+1, m_llist->GetCursorPos().y+1);
+      m_StatusBar->SetStatusText(label, m_StatusFieldCursor);
+   }
 }
 
 // change the range and position of scrollbars

user/wxLayout/wxlwindow.h

@@ -163,7 +163,19 @@ public:
    bool IsModified(void) const { return m_Modified; }
    /// Mark list as modified or unchanged.
    void SetModified(bool modified = true) { m_Modified = modified; }
-
+   /** Tell window to update a wxStatusBar with UserData labels and
+       cursor positions.
+       @param bar wxStatusBar pointer
+       @param labelfield field to use in statusbar for URLs/userdata labels, or -1 to disable
+       @param cursorfield field to use for cursor position, or -1 to disable
+   */
+   inline SetStatusBar(class wxStatusBar *bar,
+                       int labelfield = -1,
+                       int cursorfield = -1)
+      {
+         m_StatusBar = bar; m_StatusFieldLabel = labelfield;
+         m_StatusFieldCursor = cursorfield;
+      }
 protected:   
    /// generic function for mouse events processing
    void OnMouse(int eventId, wxMouseEvent& event);
@@ -211,6 +223,12 @@ private:
    wxMemoryDC  *m_memDC;
    wxBitmap    *m_bitmap;
    wxPoint      m_bitmapSize;
+   /// A frame's statusbar to update
+   class wxStatusBar *m_StatusBar;
+   /// statusbar field for labels
+   int          m_StatusFieldLabel;
+   /// statusbar field for cursor positions
+   int          m_StatusFieldCursor;
    /// a pointer to a bitmap for the background
    wxBitmap    *m_BGbitmap;
    DECLARE_EVENT_TABLE()