/// <summary>
/// Gets item rectangle in WPF logical pixel units.
/// </summary>
/// <exception cref="IndexOutOfRangeException"></exception>
public Rect GetRectLogical(int index, TVParts parts = 0, bool inScreen = false, bool clampX = false)
{
var r = GetRectPhysical(index, parts, inScreen, clampX);
double f = 96d / _dpi;
return(new Rect(r.left * f, r.top * f, r.Width * f, r.Height * f));
}
/// <summary>
/// Gets item rectangle in physical pixel units.
/// Horizontally the rectangle is limited to the visible area.
/// </summary>
/// <exception cref="IndexOutOfRangeException"></exception>
/// <exception cref="InvalidOperationException">Control not created.</exception>
public RECT GetRectPhysical(int index, TVParts parts = 0, bool inScreen = false, bool clampX = false)
{
if (!_IsValid(index))
{
throw new IndexOutOfRangeException();
}
if (!_hasHwnd)
{
throw new InvalidOperationException();
}
int y = _ItemTop(index);
var r = new RECT(0, y, _width, _itemHeight);
if (parts != 0)
{
_GetPartOffsets(index, out var k);
//left
if (parts.Has(TVParts.Left))
{
r.left = k.left;
}
else if (parts.Has(TVParts.Checkbox))
{
r.left = k.checkbox;
}
else if (parts.Has(TVParts.MarginLeft))
{
r.left = k.marginLeft;
}
else if (parts.Has(TVParts.Image))
{
r.left = k.image;
}
else if (parts.Has(TVParts.Text))
{
r.left = k.text;
}
else if (parts.Has(TVParts.MarginRight))
{
r.left = k.marginRight;
}
else
{
r.left = k.right;
}
//right
if (parts.Has(TVParts.Right))
{
r.right = Math.Max(k.right, _width);
}
else if (parts.Has(TVParts.MarginRight))
{
r.right = k.right;
}
else if (parts.Has(TVParts.Text))
{
r.right = k.marginRight;
}
else if (parts.Has(TVParts.Image))
{
r.right = k.text;
}
else if (parts.Has(TVParts.MarginLeft))
{
r.right = k.image;
}
else if (parts.Has(TVParts.Checkbox))
{
r.right = k.marginLeft;
}
else
{
r.right = k.checkbox;
}
//clamp
if (clampX)
{
r.left = Math.Clamp(r.left, 0, _width);
r.right = Math.Clamp(r.right, 0, _width);
}
}
else if (!clampX)
{
r.left = -_hscroll.Offset;
r.right = Math.Max(_width, _itemsWidth - r.left);
}
if (inScreen)
{
_w.MapClientToScreen(ref r);
}
return(r);
}
