added the possibility to draw grid lines across the entire window

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56085 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/grid.h

@@ -1372,13 +1372,7 @@ public:
     int      GetColLabelTextOrientation() const;
     wxString GetRowLabelValue( int row ) const;
     wxString GetColLabelValue( int col ) const;
-    wxColour GetGridLineColour() const { return m_gridLineColour; }
 
-    // these methods may be overridden to customize individual grid lines
-    // appearance
-    virtual wxPen GetDefaultGridLinePen();
-    virtual wxPen GetRowGridLinePen(int row);
-    virtual wxPen GetColGridLinePen(int col);
     wxColour GetCellHighlightColour() const { return m_cellHighlightColour; }
     int      GetCellHighlightPenWidth() const { return m_cellHighlightPenWidth; }
     int      GetCellHighlightROPenWidth() const { return m_cellHighlightROPenWidth; }
@@ -1396,7 +1390,6 @@ public:
     void     SetColLabelTextOrientation( int textOrientation );
     void     SetRowLabelValue( int row, const wxString& );
     void     SetColLabelValue( int col, const wxString& );
-    void     SetGridLineColour( const wxColour& );
     void     SetCellHighlightColour( const wxColour& );
     void     SetCellHighlightPenWidth(int width);
     void     SetCellHighlightROPenWidth(int width);
@@ -1418,6 +1411,36 @@ public:
     void     DisableDragCell() { EnableDragCell( false ); }
     bool     CanDragCell() const { return m_canDragCell; }
 
+
+    // grid lines
+    // ----------
+
+    // enable or disable drawing of the lines
+    void EnableGridLines(bool enable = true);
+    bool GridLinesEnabled() const { return m_gridLinesEnabled; }
+
+    // by default grid lines stop at last column/row, but this may be changed
+    void ClipHorzGridLines(bool clip)
+        { DoClipGridLines(m_gridLinesClipHorz, clip); }
+    void ClipVertGridLines(bool clip)
+        { DoClipGridLines(m_gridLinesClipVert, clip); }
+    bool AreHorzGridLinesClipped() const { return m_gridLinesClipHorz; }
+    bool AreVertGridLinesClipped() const { return m_gridLinesClipVert; }
+
+    // this can be used to change the global grid lines colour
+    void SetGridLineColour(const wxColour& col);
+    wxColour GetGridLineColour() const { return m_gridLineColour; }
+
+    // these methods may be overridden to customize individual grid lines
+    // appearance
+    virtual wxPen GetDefaultGridLinePen();
+    virtual wxPen GetRowGridLinePen(int row);
+    virtual wxPen GetColGridLinePen(int col);
+
+
+    // attributes
+    // ----------
+
     // this sets the specified attribute for this cell or in this row/col
     void     SetAttr(int row, int col, wxGridCellAttr *attr);
     void     SetRowAttr(int row, wxGridCellAttr *attr);
@@ -1438,9 +1461,6 @@ public:
     void     SetColFormatFloat(int col, int width = -1, int precision = -1);
     void     SetColFormatCustom(int col, const wxString& typeName);
 
-    void     EnableGridLines( bool enable = true );
-    bool     GridLinesEnabled() const { return m_gridLinesEnabled; }
-
     // ------ row and col formatting
     //
     int      GetDefaultRowSize() const;
@@ -1961,6 +1981,8 @@ protected:
 
     wxColour   m_gridLineColour;
     bool       m_gridLinesEnabled;
+    bool       m_gridLinesClipHorz,
+               m_gridLinesClipVert;
     wxColour   m_cellHighlightColour;
     int        m_cellHighlightPenWidth;
     int        m_cellHighlightROPenWidth;
@@ -2160,6 +2182,13 @@ private:
     // implement wxScrolledWindow method to return m_gridWin size
     virtual wxSize GetSizeAvailableForScrollTarget(const wxSize& size);
 
+    // redraw the grid lines, should be called after changing their attributes
+    void RedrawGridLines();
+
+    // common part of Clip{Horz,Vert}GridLines
+    void DoClipGridLines(bool& var, bool clip);
+
+
     // event handlers and their helpers
     // --------------------------------
 

interface/wx/grid.h

@@ -1358,6 +1358,26 @@ public:
     */
     bool AppendRows(int numRows = 1, bool updateLabels = true);
 
+    /**
+        Return @true if the horizontal grid lines stop at the last column
+        boundary or @false if they continue to the end of the window.
+
+        The default is to clip grid lines.
+
+        @see ClipHorzGridLines(), AreVertGridLinesClipped()
+     */
+    bool AreHorzGridLinesClipped() const;
+
+    /**
+        Return @true if the vertical grid lines stop at the last row
+        boundary or @false if they continue to the end of the window.
+
+        The default is to clip grid lines.
+
+        @see ClipVertGridLines(), AreHorzGridLinesClipped()
+     */
+    bool AreVertGridLinesClipped() const;
+
     /**
         Automatically sets the height and width of all rows and columns to fit their
         contents.
@@ -1504,6 +1524,30 @@ public:
     */
     void ClearSelection();
 
+    /**
+        Change whether the horizontal grid lines are clipped by the end of the
+        last column.
+
+        By default the grid lines are not drawn beyond the end of the last
+        column but after calling this function with @a clip set to @false they
+        will be drawn across the entire grid window.
+
+        @see AreHorzGridLinesClipped(), ClipVertGridLines()
+     */
+    void ClipHorzGridLines(bool clip);
+
+    /**
+        Change whether the vertical grid lines are clipped by the end of the
+        last row.
+
+        By default the grid lines are not drawn beyond the end of the last
+        row but after calling this function with @a clip set to @false they
+        will be drawn across the entire grid window.
+
+        @see AreVertzGridLinesClipped(), ClipHorzGridLines()
+     */
+    void ClipVertzGridLines(bool clip);
+
     /**
         Creates a grid with the specified initial number of rows and columns.
 

src/generic/grid.cpp

@@ -4349,9 +4349,10 @@ void wxGridWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
     wxGridCellCoordsArray dirtyCells = m_owner->CalcCellsExposed( reg );
     m_owner->DrawGridCellArea( dc, dirtyCells );
 
+    m_owner->DrawGridSpace( dc );
+
     m_owner->DrawAllGridLines( dc, reg );
 
-    m_owner->DrawGridSpace( dc );
     m_owner->DrawHighlight( dc, dirtyCells );
 }
 
@@ -4819,6 +4820,8 @@ void wxGrid::Init()
 
     m_gridLineColour = wxColour( 192,192,192 );
     m_gridLinesEnabled = true;
+    m_gridLinesClipHorz =
+    m_gridLinesClipVert = true;
     m_cellHighlightColour = *wxBLACK;
     m_cellHighlightPenWidth = 2;
     m_cellHighlightROPenWidth = 1;
@@ -7910,7 +7913,7 @@ void wxGrid::DrawHighlight(wxDC& dc, const wxGridCellCoordsArray& cells)
 //
 void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & WXUNUSED(reg) )
 {
-    if ( !m_gridLinesEnabled || !m_numRows || !m_numCols )
+    if ( !m_gridLinesEnabled )
          return;
 
     int top, bottom, left, right;
@@ -7921,9 +7924,25 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & WXUNUSED(reg) )
     CalcUnscrolledPosition( cw, ch, &right, &bottom );
 
     // avoid drawing grid lines past the last row and col
-    //
+    if ( m_gridLinesClipHorz )
-    right = wxMin( right, GetColRight(GetColAt( m_numCols - 1 )) );
+    {
-    bottom = wxMin( bottom, GetRowBottom(m_numRows - 1) );
+        if ( !m_numCols )
+            return;
+
+        const int lastColRight = GetColRight(GetColAt(m_numCols - 1));
+        if ( right > lastColRight )
+            right = lastColRight;
+    }
+
+    if ( m_gridLinesClipVert )
+    {
+        if ( !m_numRows )
+            return;
+
+        const int lastRowBottom = GetRowBottom(m_numRows - 1);
+        if ( bottom > lastRowBottom )
+            bottom = lastRowBottom;
+    }
 
     // no gridlines inside multicells, clip them out
     int leftCol = GetColPos( internalXToCol(left) );
@@ -9413,9 +9432,8 @@ void wxGrid::SetGridLineColour( const wxColour& colour )
     {
         m_gridLineColour = colour;
 
-        wxClientDC dc( m_gridWin );
+        if ( GridLinesEnabled() )
-        PrepareDC( dc );
+            RedrawGridLines();
-        DrawAllGridLines( dc, wxRegion() );
     }
 }
 
@@ -9470,25 +9488,42 @@ void wxGrid::SetCellHighlightROPenWidth(int width)
     }
 }
 
+void wxGrid::RedrawGridLines()
+{
+    // the lines will be redrawn when the window is thawn
+    if ( GetBatchCount() )
+        return;
+
+    if ( GridLinesEnabled() )
+    {
+        wxClientDC dc( m_gridWin );
+        PrepareDC( dc );
+        DrawAllGridLines( dc, wxRegion() );
+    }
+    else // remove the grid lines
+    {
+        m_gridWin->Refresh();
+    }
+}
+
 void wxGrid::EnableGridLines( bool enable )
 {
     if ( enable != m_gridLinesEnabled )
     {
         m_gridLinesEnabled = enable;
 
-        if ( !GetBatchCount() )
+        RedrawGridLines();
-        {
-            if ( enable )
-            {
-                wxClientDC dc( m_gridWin );
-                PrepareDC( dc );
-                DrawAllGridLines( dc, wxRegion() );
     }
-            else
+}
+
+void wxGrid::DoClipGridLines(bool& var, bool clip)
+{
+    if ( clip != var )
     {
-                m_gridWin->Refresh();
+        var = clip;
-            }
+
-        }
+        if ( GridLinesEnabled() )
+            RedrawGridLines();
     }
 }