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Refactor wxGrid::MakeCellVisible() to scroll in only one direction

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Allow -1 for a row or a column single parameter.
This commit is contained in:
Ilya Sinitsyn 2020-03-26 04:11:59 +07:00 committed by Vadim Zeitlin
parent 206bad9ba0
commit 72e7bde306
1 changed files with 65 additions and 22 deletions
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87
src/generic/grid.cpp
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@ -7829,22 +7829,54 @@ void wxGrid::MakeCellVisible( int row, int col )
{
int xpos = -1, ypos = -1;
if ( row >= 0 && row < m_numRows &&
col >= 0 && col < m_numCols )
if ( row < -1 || row >= m_numRows ||
col < -1 || col >= m_numCols )
return;
const bool processRow = row != -1;
const bool processCol = col != -1;
// Get the cell rectangle in logical coords.
wxRect r;
wxGridWindow *gridWindow;
if ( processRow && processCol )
{
// get the cell rectangle in logical coords
wxRect r( CellToRect( row, col ) );
r = CellToRect(row, col);
gridWindow = CellToGridWindow(row, col);
}
else if ( processRow )
{
r.SetTop(GetRowTop(row));
r.SetHeight(GetRowHeight(row));
gridWindow = row < m_numFrozenRows
? m_frozenRowGridWin
: m_gridWin;
}
else if ( processCol )
{
r.SetLeft(GetColLeft(col));
r.SetWidth(GetColWidth(col));
gridWindow = col < m_numFrozenCols
? m_frozenColGridWin
: m_gridWin;
}
else
{
return;
}
wxGridWindow *gridWindow = CellToGridWindow(row, col);
wxPoint gridOffset = GetGridWindowOffset(gridWindow);
wxPoint gridOffset = GetGridWindowOffset(gridWindow);
// convert to device coords
int left, top, right, bottom;
CalcGridWindowScrolledPosition( r.GetLeft(), r.GetTop(), &left, &top, gridWindow );
CalcGridWindowScrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom, gridWindow );
if ( processRow )
{
// Convert to device coords.
int top, bottom;
CalcGridWindowScrolledPosition(0, r.GetTop(), NULL, &top, gridWindow);
CalcGridWindowScrolledPosition(0, r.GetBottom(), NULL, &bottom, gridWindow);
int cw, ch;
gridWindow->GetClientSize( &cw, &ch );
int ch;
gridWindow->GetClientSize(NULL, &ch);
if ( top < gridOffset.y )
{
@ -7875,6 +7907,17 @@ void wxGrid::MakeCellVisible( int row, int col )
// so just add a full scroll unit...
ypos += m_yScrollPixelsPerLine;
}
}
if ( processCol )
{
// Convert to device coords.
int left, right;
CalcGridWindowScrolledPosition(r.GetLeft(), 0, &left, NULL, gridWindow);
CalcGridWindowScrolledPosition(r.GetRight(), 0, &right, NULL, gridWindow);
int cw;
gridWindow->GetClientSize(&cw, NULL);
// special handling for wide cells - show always left part of the cell!
// Otherwise, e.g. when stepping from row to row, it would jump between
@ -7894,17 +7937,17 @@ void wxGrid::MakeCellVisible( int row, int col )
// see comment for ypos above
xpos += m_xScrollPixelsPerLine;
}
if ( xpos != -1 || ypos != -1 )
{
if ( xpos != -1 )
xpos /= m_xScrollPixelsPerLine;
if ( ypos != -1 )
ypos /= m_yScrollPixelsPerLine;
Scroll( xpos, ypos );
AdjustScrollbars();
}
}
if ( xpos == -1 && ypos == -1 )
return;
if ( xpos != -1 )
xpos /= m_xScrollPixelsPerLine;
if ( ypos != -1 )
ypos /= m_yScrollPixelsPerLine;
Scroll(xpos, ypos);
AdjustScrollbars();
}
//