// Gets the matrix that transforms the top tab geometries for position on left, right, or bottom
private MatrixTransform GetTabTransform(ClassicBorderStyle style, double xOffset, double yOffset)
{
if (_tabCache == null)
_tabCache = new TabGeometryCache();
if (_tabCache.Transform == null || xOffset != _tabCache.xOffset || yOffset != _tabCache.yOffset)
{
switch (style)
{
case ClassicBorderStyle.TabLeft:
_tabCache.Transform = new MatrixTransform(new Matrix(0.0, 1.0, 1.0, 0.0, xOffset, yOffset));
break;
case ClassicBorderStyle.TabRight:
_tabCache.Transform = new MatrixTransform(new Matrix(0.0, -1.0, -1.0, 0.0, xOffset, yOffset));
break;
case ClassicBorderStyle.TabBottom:
_tabCache.Transform = new MatrixTransform(new Matrix(-1.0, 0.0, 0.0, -1.0, xOffset, yOffset));
break;
}
_tabCache.xOffset = xOffset;
_tabCache.yOffset = yOffset;
}
return _tabCache.Transform;
}
// Is this a tab style
private bool IsTabStyle(ClassicBorderStyle style)
{
return style == ClassicBorderStyle.TabLeft ||
style == ClassicBorderStyle.TabTop ||
style == ClassicBorderStyle.TabRight ||
style == ClassicBorderStyle.TabBottom;
}
