Added the forgotten file txtstrm.tex

[wxWidgets.git] / samples / richedit / wxlwindow.cpp

diff --git a/samples/richedit/wxlwindow.cpp b/samples/richedit/wxlwindow.cpp
index 98239d518464e10a6ba38d567b3a8857e7c86527..63ce2369cf59a69922ed2e1a0f0332e8173e83c8 100644 (file)
--- a/samples/richedit/wxlwindow.cpp
+++ b/samples/richedit/wxlwindow.cpp
@@ -6,9 +6,9 @@
  * $Id$
  *******************************************************************/
 
  * $Id$
  *******************************************************************/
 

-// ===========================================================================
+// ============================================================================

 // declarations
 // declarations

-// ===========================================================================
+// ============================================================================

 
 // ----------------------------------------------------------------------------
 // headers
 
 // ----------------------------------------------------------------------------
 // headers


@@ -18,7 +18,7 @@
 #   pragma implementation "wxlwindow.h"
 #endif
 
 #   pragma implementation "wxlwindow.h"
 #endif
 

-#include "wx/wxprec.h"
+#include <wx/wxprec.h>

 
 #ifdef __BORLANDC__
 #  pragma hdrstop
 
 #ifdef __BORLANDC__
 #  pragma hdrstop


@@ -84,14 +84,18 @@ static const int Y_SCROLL_PAGE = 20;
 // ----------------------------------------------------------------------------
 
 BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
 // ----------------------------------------------------------------------------
 
 BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)

+   EVT_SIZE    (wxLayoutWindow::OnSize)
+

    EVT_PAINT    (wxLayoutWindow::OnPaint)
 
    EVT_CHAR     (wxLayoutWindow::OnChar)
    EVT_KEY_UP   (wxLayoutWindow::OnKeyUp)
 
    EVT_PAINT    (wxLayoutWindow::OnPaint)
 
    EVT_CHAR     (wxLayoutWindow::OnChar)
    EVT_KEY_UP   (wxLayoutWindow::OnKeyUp)
 

-   EVT_LEFT_DOWN(wxLayoutWindow::OnLeftMouseClick)
+   EVT_LEFT_DOWN(wxLayoutWindow::OnLeftMouseDown)
+   EVT_LEFT_UP(wxLayoutWindow::OnLeftMouseUp)

    EVT_RIGHT_DOWN(wxLayoutWindow::OnRightMouseClick)
    EVT_LEFT_DCLICK(wxLayoutWindow::OnMouseDblClick)
    EVT_RIGHT_DOWN(wxLayoutWindow::OnRightMouseClick)
    EVT_LEFT_DCLICK(wxLayoutWindow::OnMouseDblClick)

+   EVT_MIDDLE_DOWN(wxLayoutWindow::OnMiddleMouseDown)

    EVT_MOTION    (wxLayoutWindow::OnMouseMove)
 
    EVT_UPDATE_UI(WXLOWIN_MENU_UNDERLINE, wxLayoutWindow::OnUpdateMenuUnderline)
    EVT_MOTION    (wxLayoutWindow::OnMouseMove)
 
    EVT_UPDATE_UI(WXLOWIN_MENU_UNDERLINE, wxLayoutWindow::OnUpdateMenuUnderline)


@@ -103,18 +107,16 @@ BEGIN_EVENT_TABLE(wxLayoutWindow,wxScrolledWindow)
    EVT_KILL_FOCUS(wxLayoutWindow::OnKillFocus)
 END_EVENT_TABLE()
 
    EVT_KILL_FOCUS(wxLayoutWindow::OnKillFocus)
 END_EVENT_TABLE()
 

-// ===========================================================================
-// implementation
-// ===========================================================================
+// ----------------------------------------------------------------------------
+// function prototypes
+// ----------------------------------------------------------------------------

 
 

-/* LEAVE IT HERE UNTIL WXGTK WORKS AGAIN!!! */
-#ifdef __WXGTK__
-/// allows me to compare to wxPoints
-static bool operator != (wxPoint const &p1, wxPoint const &p2)
-{
-   return p1.x != p2.x || p1.y != p2.y;
-}
-#endif // __WXGTK__
+/// returns TRUE if keyCode is one of arrows/home/end/page{up|down} keys
+static bool IsDirectionKey(long keyCode);
+
+// ============================================================================
+// implementation
+// ============================================================================

 
 #ifndef wxWANTS_CHARS
    #define wxWANTS_CHARS 0
 
 #ifndef wxWANTS_CHARS
    #define wxWANTS_CHARS 0


@@ -129,7 +131,8 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
                                  wxDefaultPosition, wxDefaultSize,
                                  wxHSCROLL | wxVSCROLL |
                                  wxBORDER |
                                  wxDefaultPosition, wxDefaultSize,
                                  wxHSCROLL | wxVSCROLL |
                                  wxBORDER |

-                                 wxWANTS_CHARS)
+                                 wxWANTS_CHARS),
+                m_llist(NULL)

 {
    SetStatusBar(NULL); // don't use statusbar
    m_Editable = false;
 {
    SetStatusBar(NULL); // don't use statusbar
    m_Editable = false;


@@ -141,16 +144,14 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
    m_bitmap = new wxBitmap(4,4);
    m_bitmapSize = wxPoint(4,4);
    m_llist = new wxLayoutList();
    m_bitmap = new wxBitmap(4,4);
    m_bitmapSize = wxPoint(4,4);
    m_llist = new wxLayoutList();

-

    m_BGbitmap = NULL;
    m_ScrollToCursor = false;
    SetWrapMargin(0);
    m_BGbitmap = NULL;
    m_ScrollToCursor = false;
    SetWrapMargin(0);

-   wxPoint max = m_llist->GetSize();
-   SetScrollbars(X_SCROLL_PAGE, Y_SCROLL_PAGE,
-                 max.x / X_SCROLL_PAGE + 1, max.y / Y_SCROLL_PAGE + 1);
-   EnableScrolling(true, true);
-   m_maxx = max.x + X_SCROLL_PAGE;
-   m_maxy = max.y + Y_SCROLL_PAGE;
+
+   // no scrollbars initially
+   m_hasHScrollbar =
+   m_hasVScrollbar = false;
+

    m_Selecting = false;
 
 #ifdef WXLAYOUT_USE_CARET
    m_Selecting = false;
 
 #ifdef WXLAYOUT_USE_CARET


@@ -158,13 +159,16 @@ wxLayoutWindow::wxLayoutWindow(wxWindow *parent)
    wxCaret *caret = new wxCaret(this, 2, 20);
    SetCaret(caret);
    m_llist->SetCaret(caret);
    wxCaret *caret = new wxCaret(this, 2, 20);
    SetCaret(caret);
    m_llist->SetCaret(caret);

-   caret->Show();

 #endif // WXLAYOUT_USE_CARET
 
 #endif // WXLAYOUT_USE_CARET
 

+   m_HaveFocus = FALSE;

    m_HandCursor = FALSE;
    m_CursorVisibility = -1;
    SetCursor(wxCURSOR_IBEAM);
    SetDirty();
    m_HandCursor = FALSE;
    m_CursorVisibility = -1;
    SetCursor(wxCURSOR_IBEAM);
    SetDirty();

+
+   // at least under Windows, this should be the default behaviour
+   m_AutoDeleteSelection = TRUE;

 }
 
 wxLayoutWindow::~wxLayoutWindow()
 }
 
 wxLayoutWindow::~wxLayoutWindow()


@@ -187,21 +191,42 @@ wxLayoutWindow::Clear(int family,
 {
    GetLayoutList()->Clear(family,size,style,weight,underline,fg,bg);
    SetBackgroundColour(GetLayoutList()->GetDefaultStyleInfo().GetBGColour());
 {
    GetLayoutList()->Clear(family,size,style,weight,underline,fg,bg);
    SetBackgroundColour(GetLayoutList()->GetDefaultStyleInfo().GetBGColour());

+   wxScrolledWindow::Clear();

    ResizeScrollbars(true);
    SetDirty();
    SetModified(false);
    ResizeScrollbars(true);
    SetDirty();
    SetModified(false);

-   wxScrolledWindow::Clear();
+
+   if ( m_Editable )
+      m_CursorVisibility = 1;
+
+#ifdef WXLAYOUT_USE_CARET
+   if ( m_CursorVisibility == 1 )
+      GetCaret()->Show();
+#endif // WXLAYOUT_USE_CARET
+

    DoPaint((wxRect *)NULL);
 }
 
    DoPaint((wxRect *)NULL);
 }
 

+void wxLayoutWindow::Refresh(bool eraseBackground, const wxRect *rect)
+{
+   wxScrolledWindow::Refresh(eraseBackground, rect);
+
+   ResizeScrollbars();
+//FIXME is this needed? It causes problems...   ScrollToCursor();
+}
+

 void
 wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
 {
    wxClientDC dc( this );
    PrepareDC( dc );
 void
 wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
 {
    wxClientDC dc( this );
    PrepareDC( dc );

+#ifdef __WXMSW__

    if ( eventId != WXLOWIN_MENU_MOUSEMOVE )
    if ( eventId != WXLOWIN_MENU_MOUSEMOVE )

+#endif

    {
    {

-       // moving the mouse in a window shouldn't give it the focus!
+      // moving the mouse in a window shouldn't give it the focus!
+      // Oh yes! wxGTK's focus handling is so broken, that this is the 
+      // only sensible way to go.

       SetFocus();
    }
 
       SetFocus();
    }
 


@@ -212,8 +237,10 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
    findPos.x -= WXLO_XOFFSET;
    findPos.y -= WXLO_YOFFSET;
 
    findPos.x -= WXLO_XOFFSET;
    findPos.y -= WXLO_YOFFSET;
 

-   if(findPos.x < 0) findPos.x = 0;
-   if(findPos.y < 0) findPos.y = 0;
+   if(findPos.x < 0)
+       findPos.x = 0;
+   if(findPos.y < 0)
+       findPos.y = 0;

 
    m_ClickPosition = wxPoint(event.GetX(), event.GetY());
 
 
    m_ClickPosition = wxPoint(event.GetX(), event.GetY());
 


@@ -223,98 +250,144 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
                                                    &cursorPos, &found);
    wxLayoutObject::UserData *u = obj ? obj->GetUserData() : NULL;
 
                                                    &cursorPos, &found);
    wxLayoutObject::UserData *u = obj ? obj->GetUserData() : NULL;
 

-   //has the mouse only been moved?
-   if(eventId == WXLOWIN_MENU_MOUSEMOVE)
+   // has the mouse only been moved?
+   switch ( eventId )

    {
    {

-      // found is only true if we are really over an object, not just
-      // behind it
-      if(found && u && ! m_Selecting)
-      {
-         if(!m_HandCursor)
-            SetCursor(wxCURSOR_HAND);
-         m_HandCursor = TRUE;
-         if(m_StatusBar && m_StatusFieldLabel != -1)
+      case WXLOWIN_MENU_MOUSEMOVE:

          {
          {

-            const wxString &label = u->GetLabel();
-            if(label.Length())
-               m_StatusBar->SetStatusText(label,
-                                          m_StatusFieldLabel);
+            // this variables is used to only erase the message in the status
+            // bar if we had put it there previously - otherwise empting status
+            // bar might be undesirable
+            static bool s_hasPutMessageInStatusBar = false;
+
+            // found is only true if we are really over an object, not just
+            // behind it
+            if(found && u && ! m_Selecting)
+            {
+               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);
+                     s_hasPutMessageInStatusBar = true;
+                  }
+               }
+            }
+            else
+            {
+               if(m_HandCursor)
+                  SetCursor(wxCURSOR_IBEAM);
+               m_HandCursor = FALSE;
+               if( m_StatusBar && m_StatusFieldLabel != -1 &&
+                   s_hasPutMessageInStatusBar )
+               {
+                  m_StatusBar->SetStatusText("", 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())
-      {
-         if(! m_Selecting)
+
+         // selecting?
+         if ( event.LeftIsDown() )

          {
          {

-            m_llist->StartSelection(wxPoint(-1, -1), m_ClickPosition);
-            m_Selecting = true;
-            DoPaint();  // TODO: we don't have to redraw everything!
+            // m_Selecting might not be set if the button got pressed
+            // outside this window, so check for it:
+            if( m_Selecting )
+            {
+               m_llist->ContinueSelection(cursorPos, m_ClickPosition);
+               DoPaint();  // TODO: we don't have to redraw everything!
+            }

          }
          }

-         else
+
+         if ( u )

          {
          {

-            m_llist->ContinueSelection(cursorPos, m_ClickPosition);
-            DoPaint();  // TODO: we don't have to redraw everything!
+            u->DecRef();
+            u = NULL;

          }
          }

-      }
-      if(m_Selecting && ! event.LeftIsDown())
-      {
-         m_llist->EndSelection(cursorPos, m_ClickPosition);
-         m_Selecting = false;
-         DoPaint();     // TODO: we don't have to redraw everything!
-      }
+         break;

 
 

-      if ( u )
-      {
-         u->DecRef();
-         u = NULL;
-      }
-   }
-   else if(eventId == WXLOWIN_MENU_LCLICK)
-   {
-      // always move cursor to mouse click:
-      m_llist->MoveCursorTo(cursorPos);
+      case WXLOWIN_MENU_LDOWN:
+         {
+             // always move cursor to mouse click:
+//             if ( obj )
+             {
+                // we have found the real position
+                m_llist->MoveCursorTo(cursorPos);
+             }
+//             else
+//             {
+//                // click beyond the end of the text
+//                m_llist->MoveCursorToEnd();
+//             }
+
+             // clicking a mouse removes the selection
+             if ( m_llist->HasSelection() )
+             {
+                m_llist->DiscardSelection();
+                m_Selecting = false;
+                DoPaint();     // TODO: we don't have to redraw everything!
+             }
+
+             // Calculate where the top of the visible area is:
+             int x0, y0;
+             ViewStart(&x0,&y0);
+             int dx, dy;
+             GetScrollPixelsPerUnit(&dx, &dy);
+             x0 *= dx; y0 *= dy;
+
+             wxPoint offset(-x0+WXLO_XOFFSET, -y0+WXLO_YOFFSET);
+
+             if(m_CursorVisibility == -1)
+                m_CursorVisibility = 1;
+#ifdef WXLAYOUT_USE_CARET
+             if ( m_CursorVisibility == 1 )
+                GetCaret()->Show();
+#endif // WXLAYOUT_USE_CARET

 
 

-      // clicking a mouse removes the selection
-      if ( m_llist->HasSelection() )
-      {
-         m_llist->DiscardSelection();
-         DoPaint();     // TODO: we don't have to redraw everything!
-      }
+             if(m_CursorVisibility)
+             {
+                // draw a thick cursor for editable windows with focus
+                m_llist->DrawCursor(dc, m_HaveFocus && IsEditable(), offset);
+             }

 
 

-      // Calculate where the top of the visible area is:
-      int x0, y0;
-      ViewStart(&x0,&y0);
-      int dx, dy;
-      GetScrollPixelsPerUnit(&dx, &dy);
-      x0 *= dx; y0 *= dy;
+#ifdef __WXGTK__
+             DoPaint(); // DoPaint suppresses flicker under GTK
+#endif // wxGTK

 
 

-      wxPoint offset(-x0+WXLO_XOFFSET, -y0+WXLO_YOFFSET);
+             // start selection
+             m_llist->StartSelection(wxPoint(-1, -1), m_ClickPosition);
+             m_Selecting = true;
+         }
+         break;

 
 

-      if(m_CursorVisibility == -1)
-         m_CursorVisibility = 1;
+      case WXLOWIN_MENU_LUP:
+         if ( m_Selecting )
+         {
+            m_llist->EndSelection();
+            m_Selecting = false;

 
 

-      if(m_CursorVisibility != 0)
-      {
-         // draw a thick cursor for    editable windows with focus
-         m_llist->DrawCursor(dc, m_HaveFocus && IsEditable(), offset);
-      }
+            DoPaint();     // TODO: we don't have to redraw everything!
+         }
+         break;

 
 

-      // VZ: this should be unnecessary because mouse can only click on a
-      //     visible part of the canvas
-#if 0
-      ScrollToCursor();
-#endif // 0
+      case WXLOWIN_MENU_MDOWN:
+         Paste(TRUE);
+         break;

 
 

-#ifdef __WXGTK__
-      DoPaint(); // DoPaint suppresses flicker under GTK
-#endif // wxGTK
+      case WXLOWIN_MENU_DBLCLICK:
+         // select a word under cursor
+         m_llist->MoveCursorTo(cursorPos);
+         m_llist->MoveCursorWord(-1);
+         m_llist->StartSelection();
+         m_llist->MoveCursorWord(1, false);
+         m_llist->EndSelection();
+         m_Selecting = false;
+         DoPaint();     // TODO: we don't have to redraw everything!
+         break;

    }
 
    // notify about mouse events?
    }
 
    // notify about mouse events?


@@ -340,17 +413,18 @@ wxLayoutWindow::OnMouse(int eventId, wxMouseEvent& event)
       }
    }
 
       }
    }
 

-   if( u )
-      u->DecRef();
+   if( u ) u->DecRef();

 }
 
 }
 

-/*
- * Some simple keyboard handling.
- */
+// ----------------------------------------------------------------------------
+// keyboard handling.
+// ----------------------------------------------------------------------------
+

 void
 wxLayoutWindow::OnChar(wxKeyEvent& event)
 {
    int keyCode = event.KeyCode();
 void
 wxLayoutWindow::OnChar(wxKeyEvent& event)
 {
    int keyCode = event.KeyCode();

+   bool ctrlDown = event.ControlDown();

 
 #ifdef WXLAYOUT_DEBUG
    if(keyCode == WXK_F1)
 
 #ifdef WXLAYOUT_DEBUG
    if(keyCode == WXK_F1)


@@ -360,26 +434,51 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
    }
 #endif
 
    }
 #endif
 

-   if(! m_Selecting && event.ShiftDown())
+   // Force m_Selecting to be false if shift is no longer
+   // pressed. OnKeyUp() cannot catch all Shift-Up events.
+   if(m_Selecting && !event.ShiftDown())
+   {
+      m_Selecting = false;
+      m_llist->EndSelection();
+   }
+   
+   // If we deleted the selection here, we must not execute the
+   // deletion in Delete/Backspace handling.
+   bool deletedSelection = false;
+   // pressing any non-arrow key optionally replaces the selection:
+   if(m_AutoDeleteSelection
+      && !m_Selecting
+      && m_llist->HasSelection() 
+      && ! IsDirectionKey(keyCode)
+      && ! (event.AltDown() || ctrlDown)
+      )

    {
    {

-      switch(keyCode)
+      m_llist->DeleteSelection();
+      deletedSelection = true;
+   }
+   
+   // <Shift>+<arrow> starts selection
+   if ( IsDirectionKey(keyCode) )
+   {
+      if ( m_Selecting )
+      {
+         // just continue the old selection
+         if( event.ShiftDown() )
+            m_llist->ContinueSelection();
+         else
+         {
+            m_llist->DiscardSelection();
+            m_Selecting = false;
+         }
+      }
+      else if( event.ShiftDown() )

       {
       {

-      case WXK_UP:
-      case WXK_DOWN:
-      case WXK_RIGHT:
-      case WXK_LEFT:
-      case WXK_PRIOR:
-      case WXK_NEXT:
-      case WXK_HOME:
-      case WXK_END:

          m_Selecting = true;
          m_llist->StartSelection();
          m_Selecting = true;
          m_llist->StartSelection();

-         break;
-      default:
-         ;

       }
       }

+      

    }
    }

-
+   

    // If needed, make cursor visible:
    if(m_CursorVisibility == -1)
       m_CursorVisibility = 1;
    // If needed, make cursor visible:
    if(m_CursorVisibility == -1)
       m_CursorVisibility = 1;


@@ -389,7 +488,6 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
       cursor, etc. It's default will process all keycodes causing
       modifications to the buffer, but only if editing is allowed.
    */
       cursor, etc. It's default will process all keycodes causing
       modifications to the buffer, but only if editing is allowed.
    */

-   bool ctrlDown = event.ControlDown();

    switch(keyCode)
    {
    case WXK_RIGHT:
    switch(keyCode)
    {
    case WXK_RIGHT:


@@ -424,7 +522,7 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
       break;
    case WXK_END:
       if ( ctrlDown )
       break;
    case WXK_END:
       if ( ctrlDown )

-         m_llist->MoveCursorTo(m_llist->GetSize());
+         m_llist->MoveCursorToEnd();

       else
          m_llist->MoveCursorToEndOfLine();
       break;
       else
          m_llist->MoveCursorToEndOfLine();
       break;


@@ -438,7 +536,7 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
       else if( IsEditable() )
       {
          /* First, handle control keys */
       else if( IsEditable() )
       {
          /* First, handle control keys */

-         if(event.ControlDown() && ! event.AltDown())
+         if(ctrlDown && ! event.AltDown())

          {
             switch(keyCode)
             {
          {
             switch(keyCode)
             {


@@ -446,8 +544,12 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
                Copy();
                break;
             case WXK_DELETE :
                Copy();
                break;
             case WXK_DELETE :

+               if(! deletedSelection)
+                  m_llist->DeleteWord();
+               break;

             case 'd':
             case 'd':

-               m_llist->Delete(1);
+               if(! deletedSelection) // already done
+                  m_llist->Delete(1);

                break;
             case 'y':
                m_llist->DeleteLines(1);
                break;
             case 'y':
                m_llist->DeleteLines(1);


@@ -502,16 +604,32 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
                if(event.ShiftDown())
                   Cut();
                else
                if(event.ShiftDown())
                   Cut();
                else

-                  m_llist->Delete(1);
+                  if(! deletedSelection)
+                     m_llist->Delete(1);

                break;
             case WXK_BACK: // backspace
                break;
             case WXK_BACK: // backspace

-               if(m_llist->MoveCursorHorizontally(-1)) m_llist->Delete(1);
+               if(! deletedSelection)
+                  if(m_llist->MoveCursorHorizontally(-1))
+                     m_llist->Delete(1);

                break;
             case WXK_RETURN:
                if(m_WrapMargin > 0)
                   m_llist->WrapLine(m_WrapMargin);
                m_llist->LineBreak();
                break;
                break;
             case WXK_RETURN:
                if(m_WrapMargin > 0)
                   m_llist->WrapLine(m_WrapMargin);
                m_llist->LineBreak();
                break;

+
+            case WXK_TAB:
+               if ( !event.ShiftDown() )
+               {
+                   // TODO should be configurable
+                   static const int tabSize = 8;
+
+                   CoordType x = m_llist->GetCursorPos().x;
+                   size_t numSpaces = tabSize - x % tabSize;
+                   m_llist->Insert(wxString(' ', numSpaces));
+               }
+               break;
+

             default:
                if((!(event.ControlDown() || event.AltDown() || event.MetaDown()))
                   && (keyCode < 256 && keyCode >= 32)
             default:
                if((!(event.ControlDown() || event.AltDown() || event.MetaDown()))
                   && (keyCode < 256 && keyCode >= 32)


@@ -528,15 +646,11 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
          SetModified();
       }// if(IsEditable())
    }// first switch()
          SetModified();
       }// if(IsEditable())
    }// first switch()

-   if(m_Selecting)
+
+   if ( m_Selecting )

    {
    {

-      if(event.ShiftDown())
-         m_llist->ContinueSelection();
-      else
-      {
-         m_llist->EndSelection();
-         m_Selecting = false;
-      }
+      // continue selection to the current (new) cursor position
+      m_llist->ContinueSelection();

    }
 
    // we must call ResizeScrollbars() before ScrollToCursor(), otherwise the
    }
 
    // we must call ResizeScrollbars() before ScrollToCursor(), otherwise the


@@ -551,11 +665,12 @@ wxLayoutWindow::OnChar(wxKeyEvent& event)
 void
 wxLayoutWindow::OnKeyUp(wxKeyEvent& event)
 {
 void
 wxLayoutWindow::OnKeyUp(wxKeyEvent& event)
 {

-   if(event.KeyCode() == WXK_SHIFT && m_llist->IsSelecting())
+   if ( event.KeyCode() == WXK_SHIFT && m_Selecting )

    {
       m_llist->EndSelection();
       m_Selecting = false;
    }
    {
       m_llist->EndSelection();
       m_Selecting = false;
    }

+

    event.Skip();
 }
 
    event.Skip();
 }
 


@@ -576,19 +691,10 @@ wxLayoutWindow::ScrollToCursor(void)
    WXLO_DEBUG(("ScrollToCursor: ViewStart is %d/%d", x0, y0));
 
    // Get the size of the visible window:
    WXLO_DEBUG(("ScrollToCursor: ViewStart is %d/%d", x0, y0));
 
    // Get the size of the visible window:

-   GetClientSize(&x1,&y1);
-
-   // notice that the client size may be (0, 0)...
-   wxASSERT(x1 >= 0 && y1 >= 0);
+   GetClientSize(&x1, &y1);

 
 

-   // VZ: I think this is false - if you do it here, ResizeScrollbars() won't
-   //     call SetScrollbars() later
-#if 0
-   // As we have the values anyway, use them to avoid unnecessary scrollbar
-   // updates.
-   if(x1 > m_maxx) m_maxx = x1;
-   if(y1 > m_maxy) m_maxy = y1;
-#endif // 0
+   // update the cursor screen position
+   m_llist->Layout(dc);

 
    // Make sure that the scrollbars are at a position so that the cursor is
    // visible if we are editing
 
    // Make sure that the scrollbars are at a position so that the cursor is
    // visible if we are editing


@@ -634,12 +740,13 @@ void
 wxLayoutWindow::DoPaint(const wxRect *updateRect)
 {
 #ifdef __WXGTK__
 wxLayoutWindow::DoPaint(const wxRect *updateRect)
 {
 #ifdef __WXGTK__

+   // Calling Refresh() causes bad flicker under wxGTK!!!

    InternalPaint(updateRect);
    InternalPaint(updateRect);

-#else // Causes bad flicker under wxGTK!!!
+#else
+   // shouldn't specify the update rectangle if it doesn't include all the
+   // changed locations - otherwise, they won't be repainted at all because
+   // the system clips the display to the update rect

    Refresh(FALSE); //, updateRect);
    Refresh(FALSE); //, updateRect);

-
-   if ( !::UpdateWindow(GetHwnd()) )
-      wxLogLastError("UpdateWindow");

 #endif
 }
 
 #endif
 }
 


@@ -678,6 +785,7 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
       m_llist->Layout(dc);
       ResizeScrollbars();
    }
       m_llist->Layout(dc);
       ResizeScrollbars();
    }

+

    /* Check whether the window has grown, if so, we need to reallocate
       the bitmap to be larger. */
    if(x1 > m_bitmapSize.x || y1 > m_bitmapSize.y)
    /* Check whether the window has grown, if so, we need to reallocate
       the bitmap to be larger. */
    if(x1 > m_bitmapSize.x || y1 > m_bitmapSize.y)


@@ -693,7 +801,7 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
    }
 
    m_memDC->SetDeviceOrigin(0,0);
    }
 
    m_memDC->SetDeviceOrigin(0,0);

-   m_memDC->SetBrush(wxBrush(m_llist->GetDefaultStyleInfo().GetBGColour(),wxSOLID));
+   m_memDC->SetBackground(wxBrush(m_llist->GetDefaultStyleInfo().GetBGColour(),wxSOLID));

    m_memDC->SetPen(wxPen(m_llist->GetDefaultStyleInfo().GetBGColour(),
                          0,wxTRANSPARENT));
    m_memDC->SetLogicalFunction(wxCOPY);
    m_memDC->SetPen(wxPen(m_llist->GetDefaultStyleInfo().GetBGColour(),
                          0,wxTRANSPARENT));
    m_memDC->SetLogicalFunction(wxCOPY);


@@ -769,7 +877,7 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
 
 #ifdef WXLAYOUT_USE_CARET
    // show the caret back after everything is redrawn
 
 #ifdef WXLAYOUT_USE_CARET
    // show the caret back after everything is redrawn

-   m_caret->Show();
+   GetCaret()->Show();

 #endif // WXLAYOUT_USE_CARET
 
    ResetDirty();
 #endif // WXLAYOUT_USE_CARET
 
    ResetDirty();


@@ -793,17 +901,38 @@ wxLayoutWindow::InternalPaint(const wxRect *updateRect)
    }
 }
 
    }
 }
 

+void
+wxLayoutWindow::OnSize(wxSizeEvent &event)
+{
+   if ( m_llist )
+   {
+      ResizeScrollbars();
+   }
+
+   event.Skip();
+}
+

 // change the range and position of scrollbars
 void
 wxLayoutWindow::ResizeScrollbars(bool exact)
 {
    wxPoint max = m_llist->GetSize();
 // change the range and position of scrollbars
 void
 wxLayoutWindow::ResizeScrollbars(bool exact)
 {
    wxPoint max = m_llist->GetSize();

+   wxSize size = GetClientSize();

 
    WXLO_DEBUG(("ResizeScrollbars: max size = (%ld, %ld)",
                (long int)max.x, (long int) max.y));
 
 
    WXLO_DEBUG(("ResizeScrollbars: max size = (%ld, %ld)",
                (long int)max.x, (long int) max.y));
 

+   // in the absence of scrollbars we should compare with the client size
+   if ( !m_hasHScrollbar )
+      m_maxx = size.x;// - WXLO_ROFFSET;
+   if ( !m_hasVScrollbar )
+      m_maxy = size.y;// - WXLO_BOFFSET;
+
+   // check if the text hasn't become too big
+   // TODO why do we set both at once? they're independent...

    if( max.x > m_maxx - WXLO_ROFFSET || max.y > m_maxy - WXLO_BOFFSET || exact )
    {
    if( max.x > m_maxx - WXLO_ROFFSET || max.y > m_maxy - WXLO_BOFFSET || exact )
    {

+      // text became too large

       if ( !exact )
       {
          // add an extra bit to the sizes to avoid future updates
       if ( !exact )
       {
          // add an extra bit to the sizes to avoid future updates


@@ -817,17 +946,58 @@ wxLayoutWindow::ResizeScrollbars(bool exact)
                     m_ViewStartX, m_ViewStartY,
                     true);
 
                     m_ViewStartX, m_ViewStartY,
                     true);
 

+      m_hasHScrollbar =
+      m_hasVScrollbar = true;
+

       m_maxx = max.x + X_SCROLL_PAGE;
       m_maxy = max.y + Y_SCROLL_PAGE;
    }
       m_maxx = max.x + X_SCROLL_PAGE;
       m_maxy = max.y + Y_SCROLL_PAGE;
    }

+#if 0
+   //FIXME: this code is pretty broken, producing "arithmetic
+   //exception" crashes (div by 0??)
+   else
+   {
+      // check if the window hasn't become too big, thus making the scrollbars
+      // unnecessary
+      if ( !exact )
+      {
+         // add an extra bit to the sizes to avoid future updates
+         max.x -= WXLO_ROFFSET;
+         max.y -= WXLO_BOFFSET;
+      }
+
+      if ( m_hasHScrollbar && (max.x < m_maxx) )
+      {
+         // remove the horizontal scrollbar
+         SetScrollbars(0, -1, 0, -1, 0, -1, true);
+         m_hasHScrollbar = false;
+      }
+
+      if ( m_hasVScrollbar && (max.y < m_maxy) )
+      {
+         // remove the vertical scrollbar
+         SetScrollbars(-1, 0, -1, 0, -1, 0, true);
+         m_hasVScrollbar = false;
+      }
+   }
+#endif

 }
 
 }
 

+// ----------------------------------------------------------------------------
+// clipboard operations
+//
+// ----------------------------------------------------------------------------
+

 void
 void

-wxLayoutWindow::Paste(void)
+wxLayoutWindow::Paste(bool primary)

 {
    // Read some text
    if (wxTheClipboard->Open())
    {
 {
    // Read some text
    if (wxTheClipboard->Open())
    {

+#if __WXGTK__
+      if(primary)
+         wxTheClipboard->UsePrimarySelection();
+#endif

 #if wxUSE_PRIVATE_CLIPBOARD_FORMAT
       wxLayoutDataObject wxldo;
       if (wxTheClipboard->IsSupported( wxldo.GetFormat() ))
 #if wxUSE_PRIVATE_CLIPBOARD_FORMAT
       wxLayoutDataObject wxldo;
       if (wxTheClipboard->IsSupported( wxldo.GetFormat() ))


@@ -835,7 +1005,7 @@ wxLayoutWindow::Paste(void)
          wxTheClipboard->GetData(&wxldo);
          {
          }
          wxTheClipboard->GetData(&wxldo);
          {
          }

-         //FIXME: missing functionality m_llist->Insert(wxldo.GetList());
+         //FIXME: missing functionality  m_llist->Insert(wxldo.GetList());

       }
       else
 #endif
       }
       else
 #endif


@@ -850,17 +1020,6 @@ wxLayoutWindow::Paste(void)
       }
       wxTheClipboard->Close();
    }
       }
       wxTheClipboard->Close();
    }

-
-#if 0
-   /* My attempt to get the primary selection, but it does not
-      work. :-( */
-   if(text.Length() == 0)
-   {
-      wxTextCtrl tmp_tctrl(this,-1);
-      tmp_tctrl.Paste();
-      text += tmp_tctrl.GetValue();
-   }
-#endif

 }
 
 bool
 }
 
 bool


@@ -926,6 +1085,11 @@ wxLayoutWindow::Cut(void)
    else
       return FALSE;
 }
    else
       return FALSE;
 }

+
+// ----------------------------------------------------------------------------
+// searching
+// ----------------------------------------------------------------------------
+

 bool
 wxLayoutWindow::Find(const wxString &needle,
                      wxPoint * fromWhere)
 bool
 wxLayoutWindow::Find(const wxString &needle,
                      wxPoint * fromWhere)


@@ -950,6 +1114,10 @@ wxLayoutWindow::Find(const wxString &needle,
    return false;
 }
 
    return false;
 }
 

+// ----------------------------------------------------------------------------
+// popup menu stuff
+// ----------------------------------------------------------------------------
+

 wxMenu *
 wxLayoutWindow::MakeFormatMenu()
 {
 wxMenu *
 wxLayoutWindow::MakeFormatMenu()
 {


@@ -989,36 +1157,34 @@ void wxLayoutWindow::OnMenu(wxCommandEvent& event)
    switch (event.GetId())
    {
    case WXLOWIN_MENU_LARGER:
    switch (event.GetId())
    {
    case WXLOWIN_MENU_LARGER:

-      m_llist->SetFontLarger();
-      break;
+      m_llist->SetFontLarger(); DoPaint(); break;

    case WXLOWIN_MENU_SMALLER:
    case WXLOWIN_MENU_SMALLER:

-      m_llist->SetFontSmaller();
-      break;
-
+      m_llist->SetFontSmaller(); DoPaint(); break;

    case WXLOWIN_MENU_UNDERLINE:
    case WXLOWIN_MENU_UNDERLINE:

-      m_llist->ToggleFontUnderline();
-      break;
+      m_llist->ToggleFontUnderline(); DoPaint(); break;

    case WXLOWIN_MENU_BOLD:
    case WXLOWIN_MENU_BOLD:

-      m_llist->ToggleFontWeight();
-      break;
+      m_llist->ToggleFontWeight(); DoPaint(); break;

    case WXLOWIN_MENU_ITALICS:
    case WXLOWIN_MENU_ITALICS:

-      m_llist->ToggleFontItalics();
-      break;
-
+      m_llist->ToggleFontItalics(); DoPaint(); break;

    case WXLOWIN_MENU_ROMAN:
    case WXLOWIN_MENU_ROMAN:

-      m_llist->SetFontFamily(wxROMAN); break;
+      m_llist->SetFontFamily(wxROMAN); DoPaint(); break;

    case WXLOWIN_MENU_TYPEWRITER:
    case WXLOWIN_MENU_TYPEWRITER:

-      m_llist->SetFontFamily(wxFIXED); break;
+      m_llist->SetFontFamily(wxFIXED); DoPaint(); break;

    case WXLOWIN_MENU_SANSSERIF:
    case WXLOWIN_MENU_SANSSERIF:

-      m_llist->SetFontFamily(wxSWISS); break;
+      m_llist->SetFontFamily(wxSWISS); DoPaint(); break;

    }
 }
 
    }
 }
 

+// ----------------------------------------------------------------------------
+// focus
+// ----------------------------------------------------------------------------
+

 void
 wxLayoutWindow::OnSetFocus(wxFocusEvent &ev)
 {
    m_HaveFocus = true;
    ev.Skip();
 void
 wxLayoutWindow::OnSetFocus(wxFocusEvent &ev)
 {
    m_HaveFocus = true;
    ev.Skip();

+   DoPaint(); // cursor must change

 }
 
 void
 }
 
 void


@@ -1026,4 +1192,28 @@ wxLayoutWindow::OnKillFocus(wxFocusEvent &ev)
 {
    m_HaveFocus = false;
    ev.Skip();
 {
    m_HaveFocus = false;
    ev.Skip();

+   DoPaint();// cursor must change
+}
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+static bool IsDirectionKey(long keyCode)
+{
+   switch(keyCode)
+   {
+      case WXK_UP:
+      case WXK_DOWN:
+      case WXK_RIGHT:
+      case WXK_LEFT:
+      case WXK_PRIOR:
+      case WXK_NEXT:
+      case WXK_HOME:
+      case WXK_END:
+         return true;
+
+      default:
+         return false;
+   }

 }
 }