allowing vertical scrolling even if wxTE_NO_VSCROLL is given, displaying a scrollbar...

[wxWidgets.git] / src / generic / grid.cpp

diff --git a/src/generic/grid.cpp b/src/generic/grid.cpp
index f712e23b4dbe7b4d5b64d7cedef918d7cda31121..22939d4afc505c85c051a6d584651dd174f4fb4d 100644 (file)
--- a/src/generic/grid.cpp
+++ b/src/generic/grid.cpp
@@ -4623,6 +4623,33 @@ void wxGrid::CalcWindowSizes()
     int cw, ch;
     GetClientSize( &cw, &ch );
 
+    // this block of code tries to work around the following problem: the grid
+    // could have been just resized to have enough space to show the full grid
+    // window contents without the scrollbars, but its client size could be
+    // not big enough because the grid has the scrollbars right now and so the
+    // scrollbars would remain even though we don't need them any more
+    //
+    // to prevent this from happening, check if we have enough space for
+    // everything without the scrollbars and explicitly disable them then
+    wxSize size = GetSize() - GetWindowBorderSize();
+    if ( size != wxSize(cw, ch) )
+    {
+        // check if we have enough space for grid window after accounting for
+        // the fixed size elements
+        size.x -= m_rowLabelWidth;
+        size.y -= m_colLabelHeight;
+
+        const wxSize vsize = m_gridWin->GetVirtualSize();
+
+        if ( size.x >= vsize.x && size.y >= vsize.y )
+        {
+            // yes, we do, so remove the scrollbars and use the new client size
+            // (which should be the same as full window size - borders now)
+            SetScrollbars(0, 0, 0, 0);
+            GetClientSize(&cw, &ch);
+        }
+    }
+
     if ( m_cornerLabelWin && m_cornerLabelWin->IsShown() )
         m_cornerLabelWin->SetSize( 0, 0, m_rowLabelWidth, m_colLabelHeight );
 
@@ -10652,46 +10679,22 @@ void wxGrid::AutoSizeColLabelSize( int col )
 
 wxSize wxGrid::DoGetBestSize() const
 {
-    // don't set sizes, only calculate them
     wxGrid *self = (wxGrid *)this;  // const_cast
 
-    int width, height;
-    width = self->SetOrCalcColumnSizes(true);
-    height = self->SetOrCalcRowSizes(true);
-
-    if (!width)
-        width = 100;
-    if (!height)
-        height = 80;
-
-    // Round up to a multiple the scroll rate
-    // NOTE: this still doesn't get rid of the scrollbars;
-    // is there any magic incantation for that?
-    int xpu, ypu;
-    GetScrollPixelsPerUnit(&xpu, &ypu);
-    if (xpu)
-        width  += 1 + xpu - (width  % xpu);
-    if (ypu)
-        height += 1 + ypu - (height % ypu);
-
-    // limit to 1/4 of the screen size
-    int maxwidth, maxheight;
-    wxDisplaySize( &maxwidth, &maxheight );
-    maxwidth /= 2;
-    maxheight /= 2;
-    if ( width > maxwidth )
-        width = maxwidth;
-    if ( height > maxheight )
-        height = maxheight;
-
-    wxSize best(width, height);
+    // we do the same as in AutoSize() here with the exception that we don't
+    // change the column/row sizes, only calculate them
+    wxSize size(self->SetOrCalcColumnSizes(true) - m_rowLabelWidth + m_extraWidth,
+                self->SetOrCalcRowSizes(true) - m_colLabelHeight + m_extraHeight);
+    wxSize sizeFit(GetScrollX(size.x) * GetScrollLineX(),
+                   GetScrollY(size.y) * GetScrollLineY());
 
     // NOTE: This size should be cached, but first we need to add calls to
     // InvalidateBestSize everywhere that could change the results of this
     // calculation.
     // CacheBestSize(size);
 
-    return best;
+    return wxSize(sizeFit.x + m_rowLabelWidth, sizeFit.y + m_colLabelHeight)
+            + GetWindowBorderSize();
 }
 
 void wxGrid::Fit()