// Name: generic/grid.cpp
// Purpose: wxGrid and related classes
// Author: Michael Bedward (based on code by Julian Smart, Robin Dunn)
-// Modified by:
+// Modified by: Robin Dunn, Vadim Zeitlin
// Created: 1/08/1999
// RCS-ID: $Id$
// Copyright: (c) Michael Bedward (mbedward@ozemail.com.au)
// The scroll bars may be a little flakey once in a while, but that is
// surely much less horrible than having scroll lines of only 1!!!
// -- Robin
-static const size_t GRID_SCROLL_LINE = 15; // 1;
-
+//
+// Well, it's still seriously broken so it might be better but needs
+// fixing anyhow
+// -- Vadim
+static const size_t GRID_SCROLL_LINE_X = 15; // 1;
+static const size_t GRID_SCROLL_LINE_Y = GRID_SCROLL_LINE_X;
// the size of hash tables used a bit everywhere (the max number of elements
// in these hash tables is the number of rows/columns)
static const int GRID_HASH_SIZE = 100;
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+static inline int GetScrollX(int x)
+{
+ return (x + GRID_SCROLL_LINE_X - 1) / GRID_SCROLL_LINE_X;
+}
+
+static inline int GetScrollY(int y)
+{
+ return (y + GRID_SCROLL_LINE_Y - 1) / GRID_SCROLL_LINE_Y;
+}
+
// ============================================================================
// implementation
// ============================================================================
wxGridCellRenderer* wxGridCellAttr::GetRenderer(wxGrid* grid, int row, int col) const
{
- wxGridCellRenderer* renderer = NULL;
+ wxGridCellRenderer *renderer;
- if ( m_defGridAttr == this || grid == NULL )
+ if ( m_renderer && this != m_defGridAttr )
{
- renderer = m_renderer; // use local attribute
- if ( renderer )
- renderer->IncRef();
+ // use the cells renderer if it has one
+ renderer = m_renderer;
+ renderer->IncRef();
}
-
- if ( !renderer && grid ) // get renderer for the data type
+ else // no non default cell renderer
{
- // GetDefaultRendererForCell() will do IncRef() for us
- renderer = grid->GetDefaultRendererForCell(row, col);
- }
+ // get default renderer for the data type
+ if ( grid )
+ {
+ // GetDefaultRendererForCell() will do IncRef() for us
+ renderer = grid->GetDefaultRendererForCell(row, col);
+ }
+ else
+ {
+ renderer = NULL;
+ }
- if ( !renderer )
- {
- // if we still don't have one then use the grid default
- // (no need for IncRef() here neither)
- renderer = m_defGridAttr->GetRenderer(NULL,0,0);
+ if ( !renderer )
+ {
+ if ( this != m_defGridAttr )
+ {
+ // if we still don't have one then use the grid default
+ // (no need for IncRef() here neither)
+ renderer = m_defGridAttr->GetRenderer(NULL, 0, 0);
+ }
+ else // default grid attr
+ {
+ // use m_renderer which we had decided not to use initially
+ renderer = m_renderer;
+ if ( renderer )
+ renderer->IncRef();
+ }
+ }
}
- if ( !renderer)
- {
- wxFAIL_MSG(wxT("Missing default cell attribute"));
- }
+ // we're supposed to always find something
+ wxASSERT_MSG(renderer, wxT("Missing default cell renderer"));
return renderer;
}
+// same as above, except for s/renderer/editor/g
wxGridCellEditor* wxGridCellAttr::GetEditor(wxGrid* grid, int row, int col) const
{
- wxGridCellEditor* editor = NULL;
+ wxGridCellEditor *editor;
- if ( m_defGridAttr != this || grid == NULL )
+ if ( m_editor && this != m_defGridAttr )
{
- editor = m_editor; // use local attribute
- if ( editor )
- editor->IncRef();
+ // use the cells editor if it has one
+ editor = m_editor;
+ editor->IncRef();
}
-
- if ( !editor && grid ) // get renderer for the data type
- editor = grid->GetDefaultEditorForCell(row, col);
-
- if ( !editor )
- // if we still don't have one then use the grid default
- editor = m_defGridAttr->GetEditor(NULL,0,0);
-
- if ( !editor )
+ else // no non default cell editor
{
- wxFAIL_MSG(wxT("Missing default cell attribute"));
+ // get default editor for the data type
+ if ( grid )
+ {
+ // GetDefaultEditorForCell() will do IncRef() for us
+ editor = grid->GetDefaultEditorForCell(row, col);
+ }
+ else
+ {
+ editor = NULL;
+ }
+
+ if ( !editor )
+ {
+ if ( this != m_defGridAttr )
+ {
+ // if we still don't have one then use the grid default
+ // (no need for IncRef() here neither)
+ editor = m_defGridAttr->GetEditor(NULL, 0, 0);
+ }
+ else // default grid attr
+ {
+ // use m_editor which we had decided not to use initially
+ editor = m_editor;
+ if ( editor )
+ editor->IncRef();
+ }
+ }
}
+ // we're supposed to always find something
+ wxASSERT_MSG(editor, wxT("Missing default cell editor"));
+
return editor;
}
// preserve (more or less) the previous position
int x, y;
GetViewStart( &x, &y );
- // maybe we don't need scrollbars at all? and if we do, transform w and h
- // from pixels into logical units
+
+ // maybe we don't need scrollbars at all?
+ //
+ // also adjust the position to be valid for the new scroll rangs
if ( w <= cw )
{
- w = 0; x= 0;
+ w = x = 0;
}
else
{
- w = (w + GRID_SCROLL_LINE - 1)/GRID_SCROLL_LINE;
if ( x >= w )
x = w - 1;
}
+
if ( h <= ch )
{
- h = 0; y = 0;
+ h = y = 0;
}
else
{
- h = (h + GRID_SCROLL_LINE - 1)/GRID_SCROLL_LINE;
if ( y >= h )
y = h - 1;
}
// do set scrollbar parameters
- SetScrollbars( GRID_SCROLL_LINE, GRID_SCROLL_LINE,
- w, h, x, y, (GetBatchCount() != 0));
+ SetScrollbars( GRID_SCROLL_LINE_X, GRID_SCROLL_LINE_Y,
+ GetScrollX(w), GetScrollY(h), x, y,
+ GetBatchCount() != 0);
}
{
bool claimed;
bool vetoed= FALSE;
-
- if ( type == wxEVT_GRID_ROW_SIZE || type == wxEVT_GRID_COL_SIZE )
- {
- int rowOrCol = (row == -1 ? col : row);
- wxGridSizeEvent gridEvt( GetId(),
- type,
- this,
- rowOrCol,
- mouseEv.GetX() + GetRowLabelSize(),
- mouseEv.GetY() + GetColLabelSize(),
- mouseEv.ControlDown(),
- mouseEv.ShiftDown(),
- mouseEv.AltDown(),
- mouseEv.MetaDown() );
-
- claimed = GetEventHandler()->ProcessEvent(gridEvt);
- vetoed = !gridEvt.IsAllowed();
-
- }
+ if ( type == wxEVT_GRID_ROW_SIZE || type == wxEVT_GRID_COL_SIZE )
+ {
+ int rowOrCol = (row == -1 ? col : row);
+
+ wxGridSizeEvent gridEvt( GetId(),
+ type,
+ this,
+ rowOrCol,
+ mouseEv.GetX() + GetRowLabelSize(),
+ mouseEv.GetY() + GetColLabelSize(),
+ mouseEv.ControlDown(),
+ mouseEv.ShiftDown(),
+ mouseEv.AltDown(),
+ mouseEv.MetaDown() );
+
+ claimed = GetEventHandler()->ProcessEvent(gridEvt);
+ vetoed = !gridEvt.IsAllowed();
+ }
else if ( type == wxEVT_GRID_RANGE_SELECT )
- {
- // Right now, it should _never_ end up here!
- wxGridRangeSelectEvent gridEvt( GetId(),
- type,
- this,
- m_selectingTopLeft,
- m_selectingBottomRight,
- TRUE,
- mouseEv.ControlDown(),
- mouseEv.ShiftDown(),
- mouseEv.AltDown(),
- mouseEv.MetaDown() );
-
- claimed = GetEventHandler()->ProcessEvent(gridEvt);
- vetoed = !gridEvt.IsAllowed();
-
- }
+ {
+ // Right now, it should _never_ end up here!
+ wxGridRangeSelectEvent gridEvt( GetId(),
+ type,
+ this,
+ m_selectingTopLeft,
+ m_selectingBottomRight,
+ TRUE,
+ mouseEv.ControlDown(),
+ mouseEv.ShiftDown(),
+ mouseEv.AltDown(),
+ mouseEv.MetaDown() );
+
+ claimed = GetEventHandler()->ProcessEvent(gridEvt);
+ vetoed = !gridEvt.IsAllowed();
+ }
else
- {
- wxGridEvent gridEvt( GetId(),
- type,
- this,
- row, col,
- mouseEv.GetX() + GetRowLabelSize(),
- mouseEv.GetY() + GetColLabelSize(),
- FALSE,
- mouseEv.ControlDown(),
- mouseEv.ShiftDown(),
- mouseEv.AltDown(),
- mouseEv.MetaDown() );
- claimed = GetEventHandler()->ProcessEvent(gridEvt);
- vetoed = !gridEvt.IsAllowed();
- }
-
- // A Veto'd event may not be `claimed' so test this first
- if (vetoed) return -1;
- return claimed ? 1 : 0;
-
-
+ {
+ wxGridEvent gridEvt( GetId(),
+ type,
+ this,
+ row, col,
+ mouseEv.GetX() + GetRowLabelSize(),
+ mouseEv.GetY() + GetColLabelSize(),
+ FALSE,
+ mouseEv.ControlDown(),
+ mouseEv.ShiftDown(),
+ mouseEv.AltDown(),
+ mouseEv.MetaDown() );
+ claimed = GetEventHandler()->ProcessEvent(gridEvt);
+ vetoed = !gridEvt.IsAllowed();
+ }
+
+ // A Veto'd event may not be `claimed' so test this first
+ if (vetoed) return -1;
+ return claimed ? 1 : 0;
}
vetoed = !gridEvt.IsAllowed();
}
- // A Veto'd event may not be `claimed' so test this first
- if (vetoed) return -1;
- return claimed ? 1 : 0;
-
+ // A Veto'd event may not be `claimed' so test this first
+ if (vetoed) return -1;
+ return claimed ? 1 : 0;
}
}
-// This is just here to make sure that CalcDimensions gets called when
-// the grid view is resized... then the size event is skipped to allow
-// the box sizers to handle everything
-//
-void wxGrid::OnSize( wxSizeEvent& WXUNUSED(event) )
+void wxGrid::OnSize( wxSizeEvent& event )
{
+ // position the child windows
CalcWindowSizes();
- CalcDimensions();
+
+ // don't call CalcDimensions() from here, the base class handles the size
+ // changes itself
+ event.Skip();
}
{
if ( enable )
{
- if (SendEvent( wxEVT_GRID_EDITOR_SHOWN) <0)
- return;
+ if (SendEvent( wxEVT_GRID_EDITOR_SHOWN) <0)
+ return;
- // this should be checked by the caller!
+ // this should be checked by the caller!
wxASSERT_MSG( CanEnableCellControl(),
_T("can't enable editing for this cell!") );
}
else
{
- //FIXME:add veto support
- SendEvent( wxEVT_GRID_EDITOR_HIDDEN);
+ //FIXME:add veto support
+ SendEvent( wxEVT_GRID_EDITOR_HIDDEN);
- HideCellEditControl();
+ HideCellEditControl();
SaveEditControlValue();
// do it after HideCellEditControl()
m_currentCellCoords.GetRow(),
m_currentCellCoords.GetCol() ) < 0 ) {
- //Event has been veto set the data back.
- SetCellValue(row,col,oldval);
- }
+ // Event has been vetoed, set the data back.
+ SetCellValue(row,col,oldval);
+ }
}
}
}
//
// Sometimes GRID_SCROLL_LINE/2 is not enough, so just add a full
// scroll unit...
- ypos += GRID_SCROLL_LINE;
+ ypos += GRID_SCROLL_LINE_Y;
}
if ( left < 0 )
}
// see comment for ypos above
- xpos += GRID_SCROLL_LINE;
+ xpos += GRID_SCROLL_LINE_X;
}
if ( xpos != -1 || ypos != -1 )
{
- if ( xpos != -1 ) xpos /= GRID_SCROLL_LINE;
- if ( ypos != -1 ) ypos /= GRID_SCROLL_LINE;
+ if ( xpos != -1 )
+ xpos /= GRID_SCROLL_LINE_X;
+ if ( ypos != -1 )
+ ypos /= GRID_SCROLL_LINE_Y;
Scroll( xpos, ypos );
AdjustScrollbars();
}
if ( !calcOnly )
BeginBatch();
+
for ( int col = 0; col < m_numCols; col++ )
{
if ( !calcOnly )
width += GetColWidth(col);
}
+
if ( !calcOnly )
EndBatch();
+
return width;
}
if ( !calcOnly )
BeginBatch();
+
for ( int row = 0; row < m_numRows; row++ )
{
if ( !calcOnly )
height += GetRowHeight(row);
}
+
if ( !calcOnly )
EndBatch();
+
return height;
}
void wxGrid::AutoSize()
{
- // set the size too
- SetClientSize(SetOrCalcColumnSizes(FALSE), SetOrCalcRowSizes(FALSE));
+ BeginBatch();
+
+ wxSize size(SetOrCalcColumnSizes(FALSE), SetOrCalcRowSizes(FALSE));
+
+ // round up the size to a multiple of scroll step - this ensures that we
+ // won't get the scrollbars if we're sized exactly to this width
+ wxSize sizeFit(GetScrollX(size.x) * GRID_SCROLL_LINE_X,
+ GetScrollY(size.y) * GRID_SCROLL_LINE_Y);
+
+ // distribute the extra space between teh columns/rows to avoid having
+ // extra white space
+ wxCoord diff = sizeFit.x - size.x;
+ if ( diff )
+ {
+ // try to resize the columns uniformly
+ wxCoord diffPerCol = diff / m_numCols;
+ if ( diffPerCol )
+ {
+ for ( int col = 0; col < m_numCols; col++ )
+ {
+ SetColSize(col, GetColWidth(col) + diffPerCol);
+ }
+ }
+
+ // add remaining amount to the last columns
+ diff -= diffPerCol * m_numCols;
+ if ( diff )
+ {
+ for ( int col = m_numCols - 1; col >= m_numCols - diff; col-- )
+ {
+ SetColSize(col, GetColWidth(col) + 1);
+ }
+ }
+ }
+
+ // same for rows
+ diff = sizeFit.y - size.y;
+ if ( diff )
+ {
+ // try to resize the columns uniformly
+ wxCoord diffPerRow = diff / m_numRows;
+ if ( diffPerRow )
+ {
+ for ( int row = 0; row < m_numRows; row++ )
+ {
+ SetRowSize(row, GetRowHeight(row) + diffPerRow);
+ }
+ }
+
+ // add remaining amount to the last rows
+ diff -= diffPerRow * m_numRows;
+ if ( diff )
+ {
+ for ( int row = m_numRows - 1; row >= m_numRows - diff; row-- )
+ {
+ SetRowSize(row, GetRowHeight(row) + 1);
+ }
+ }
+ }
+
+ EndBatch();
+
+ SetClientSize(sizeFit);
}
wxSize wxGrid::DoGetBestSize() const
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