protected ScrollBarDirections barsNeeded()
{
ScrollBarDirections ret = ScrollBarDirections.None;
System.Drawing.Size intSize = this.Size;
System.Drawing.Size scrlSize = _scrolledPanel.Size;
if (scrlSize.Width > intSize.Width)
{
ret |= ScrollBarDirections.Horizontal;
}
if (scrlSize.Height > intSize.Height)
{
ret |= ScrollBarDirections.Vertical;
}
if ((ret & ScrollBarDirections.Horizontal) != 0 &&
scrlSize.Height > (intSize.Height - HSCROLL_HEIGHT))
{
ret |= ScrollBarDirections.Vertical;
}
if ((ret & ScrollBarDirections.Vertical) != 0 &&
scrlSize.Width > (intSize.Width - VSCROLL_WIDTH))
{
ret |= ScrollBarDirections.Horizontal;
}
return(ret);
}
protected void sizeElements()
{
ScrollBarDirections barsToShow = 0x0;
resizeScrollPanel();
System.Drawing.Size scrlSize = _scrolledPanel.Size;
switch (_displayPolicy)
{
case ScrollBarDisplay.Always:
barsToShow = _directionPolicy;
break;
case ScrollBarDisplay.Never:
barsToShow = ScrollBarDirections.None;
break;
case ScrollBarDisplay.AsNeeded:
barsToShow = barsNeeded();
break;
}
int intWidth = this.Size.Width;
int intHeight = this.Size.Height;
if ((ScrollBarDirections.Vertical & barsToShow) > 0)
{
intWidth -= VSCROLL_WIDTH;
base.Controls.Add(_vertBar);
}
else if (((Control)this).Controls.Contains(_vertBar))
{
base.Controls.Remove(_vertBar);
}
// determine settings for the scrollbar
if ((ScrollBarDirections.Vertical & barsToShow) > 0)
{
_vertBar.Minimum = 0;
_vertBar.Maximum = scrlSize.Height;
_vertBar.LargeChange = intHeight;
_vertBar.SmallChange = scrlSize.Height / 20;
_vertBar.Location = new System.Drawing.Point(intWidth, 0);
_vertBar.Size = new System.Drawing.Size(VSCROLL_WIDTH, intHeight);
}
System.Drawing.Size newInternalSize =
new System.Drawing.Size(intWidth, _scrolledPanel.Size.Height);
bool bcmp = !newInternalSize.Equals(_scrolledPanel.Size);
_scrolledPanel.Size = newInternalSize;
if (bcmp && this.ClientResized != null)
{
ClientResized(this, new EventArgs());
}
}
protected ScrollBarDirections barsNeeded()
{
ScrollBarDirections ret = ScrollBarDirections.None;
System.Drawing.Size intSize = this.Size;
System.Drawing.Size scrlSize = _scrolledPanel.Size;
if (scrlSize.Height > intSize.Height)
{
ret |= ScrollBarDirections.Vertical;
}
return(ret);
}
public PhoneScrollingPanel(ScrollBarDisplay dPol,
ScrollBarDirections dirPol)
{
_displayPolicy = dPol;
_directionPolicy = dirPol;
_scrolledPanel = new Panel();
_vertBar = new VScrollBar();
_scrolledPanel.Location = new System.Drawing.Point(0, 0);
((Control)this).Controls.Add(_scrolledPanel);
_collection = new ScrolledCollection(this, _scrolledPanel);
this.Resize += new EventHandler(ScrollingPanel_Resize);
_vertBar.ValueChanged += new EventHandler(_vertBar_ValueChanged);
}
