private void SetHMaxNum(Control control)
{
if (!m_lstHCache.ContainsKey(control))
{
return;
}
UCHScrollbar barH = m_lstHCache[control];
if (control is ScrollableControl)
{
barH.Maximum = (control as ScrollableControl).HorizontalScroll.Maximum;
barH.Value = (control as ScrollableControl).HorizontalScroll.Value;
}
else if (control is TreeView)
{
barH.Maximum = GetTreeNodeMaxX(control as TreeView);
barH.Value = (control as TreeView).AutoScrollOffset.X;
}
else if (control is TextBox)
{
TextBox txt = (TextBox)control;
int intTxtMaxWidth = 0;
int intTextWidth = 0;
using (var g = txt.CreateGraphics())
{
intTxtMaxWidth = (int)g.MeasureString(txt.Text, txt.Font).Width;
intTextWidth = (int)g.MeasureString(txt.Text.Substring(0, txt.SelectionStart), txt.Font).Width;
}
barH.Maximum = intTxtMaxWidth;
barH.Value = (control as TextBox).AutoScrollOffset.Y;
}
}
void barH_Scroll(object sender, EventArgs e)
{
UCHScrollbar bar = (UCHScrollbar)sender;
if (m_lstHCache.ContainsValue(bar))
{
Control c = m_lstHCache.FirstOrDefault(p => p.Value == bar).Key;
if (c is ScrollableControl)
{
(c as ScrollableControl).AutoScrollPosition = new Point(bar.Value, (c as ScrollableControl).AutoScrollPosition.Y);
}
else if (c is TreeView)
{
//TreeView tv = (c as TreeView);
//SetTreeViewVScrollLocation(tv, tv.Nodes, bar.Value);
}
else if (c is TextBox)
{
//TextBox txt = (c as TextBox);
//SetTextBoxVScrollLocation(txt, bar.Value);
}
}
}
void control_SizeChanged(object sender, EventArgs e)
{
if (ControlHelper.IsDesignMode())
{
return;
}
else
{
var control = sender as Control;
bool blnHasVScrollbar = control.IsHandleCreated && (ControlHelper.GetWindowLong(control.Handle, STYLE) & VSCROLL) != 0;
bool blnHasHScrollbar = control.IsHandleCreated && (ControlHelper.GetWindowLong(control.Handle, STYLE) & HSCROLL) != 0;
if (blnHasVScrollbar)
{
if (!m_lstVCache.ContainsKey(control))
{
if (control.Parent != null)
{
UCVScrollbar barV = new UCVScrollbar();
barV.Width = SystemInformation.VerticalScrollBarWidth;
barV.Scroll += barV_Scroll;
m_lstVCache[control] = barV;
if (blnHasHScrollbar)
{
barV.Height = control.Height - barV.Width - 2;
}
else
{
barV.Height = control.Height - 2;
}
SetVMaxNum(control);
barV.Location = new System.Drawing.Point(control.Right - barV.Width - 1, control.Top + 1);
control.Parent.Controls.Add(barV);
int intControlIndex = control.Parent.Controls.GetChildIndex(control);
control.Parent.Controls.SetChildIndex(barV, intControlIndex);
}
}
else
{
SetVMaxNum(control);
}
}
else
{
if (m_lstVCache.ContainsKey(control) && m_lstVCache[control].Parent != null)
{
m_lstVCache[control].Parent.Controls.Remove(m_lstVCache[control]);
m_lstVCache.Remove(control);
}
}
if (blnHasHScrollbar)
{
if (!m_lstHCache.ContainsKey(control))
{
if (control.Parent != null)
{
UCHScrollbar barH = new UCHScrollbar();
barH.Height = SystemInformation.HorizontalScrollBarHeight;
barH.Scroll += barH_Scroll;
m_lstHCache[control] = barH;
if (blnHasHScrollbar)
{
barH.Width = control.Width - barH.Height - 2;
}
else
{
barH.Width = control.Width - 2;
}
SetHMaxNum(control);
barH.Location = new System.Drawing.Point(control.Left + 1, control.Bottom - barH.Height - 1);
control.Parent.Controls.Add(barH);
int intControlIndex = control.Parent.Controls.GetChildIndex(control);
control.Parent.Controls.SetChildIndex(barH, intControlIndex);
}
}
else
{
SetHMaxNum(control);
}
}
else
{
if (m_lstHCache.ContainsKey(control))
{
if (m_lstHCache[control].Visible)
{
m_lstHCache[control].Parent.Controls.Remove(m_lstHCache[control]);
}
}
}
}
ResetScrollLocation(sender);
}
