private void SetVMaxNum(Control control)
{
if (!m_lstVCache.ContainsKey(control))
{
return;
}
var into = ControlHelper.GetVScrollBarInfo(control.Handle);
var intoH = ControlHelper.GetHScrollBarInfo(control.Handle);
UCVScrollbar barV = m_lstVCache[control];
if (control is ScrollableControl)
{
barV.Maximum = (control as ScrollableControl).VerticalScroll.Maximum;
barV.Value = (control as ScrollableControl).VerticalScroll.Value;
}
else if (control is TreeView)
{
barV.Maximum = GetTreeNodeMaxY(control as TreeView);
barV.Value = (control as TreeView).AutoScrollOffset.Y;
}
else if (control is TextBox)
{
TextBox txt = (TextBox)control;
int intTxtMaxHeight = 0;
int intTextHeight = 0;
using (var g = txt.CreateGraphics())
{
intTxtMaxHeight = (int)g.MeasureString(txt.Text, txt.Font).Height;
intTextHeight = (int)g.MeasureString(txt.Text.Substring(0, txt.SelectionStart), txt.Font).Height;
}
barV.Maximum = intTxtMaxHeight;
barV.Value = (control as TextBox).AutoScrollOffset.Y;
}
}
void barV_Scroll(object sender, EventArgs e)
{
UCVScrollbar bar = (UCVScrollbar)sender;
if (m_lstVCache.ContainsValue(bar))
{
Control c = m_lstVCache.FirstOrDefault(p => p.Value == bar).Key;
//ControlHelper.SetVScrollValue(c.Handle, bar.Value);
if (c is ScrollableControl)
{
(c as ScrollableControl).AutoScrollPosition = new Point((c as ScrollableControl).AutoScrollPosition.X, bar.Value);
}
else if (c is TreeView)
{
ControlHelper.SetVScrollValue(c.Handle, bar.Value / ((c as TreeView).ItemHeight));
}
else if (c is TextBox)
{
ControlHelper.SetVScrollValue(c.Handle, bar.Value / ((c as TextBox).PreferredHeight));
}
else if (c is RichTextBox)
{
ControlHelper.SetVScrollValue(c.Handle, bar.Value);
}
else if (c is ListBox)
{
ControlHelper.SetVScrollValue(c.Handle, bar.Value / ((c as ListBox).ItemHeight));
}
else if (c is ListView)
{
ControlHelper.SetVScrollValue(c.Handle, bar.Value);
}
else if (c is DataGridView)
{
var dgv = (DataGridView)c;
if (bar.Value > 0)
{
dgv.FirstDisplayedScrollingRowIndex = bar.Value - 1;
}
}
}
}
void barV_Scroll(object sender, EventArgs e)
{
UCVScrollbar bar = (UCVScrollbar)sender;
if (m_lstVCache.ContainsValue(bar))
{
Control c = m_lstVCache.FirstOrDefault(p => p.Value == bar).Key;
if (c is ScrollableControl)
{
(c as ScrollableControl).AutoScrollPosition = new Point((c as ScrollableControl).AutoScrollPosition.X, bar.Value);
}
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);
}
private void SetVMaxNum(Control control)
{
if (!m_lstVCache.ContainsKey(control))
{
return;
}
var intoV = ControlHelper.GetVScrollBarInfo(control.Handle);
UCVScrollbar barV = m_lstVCache[control];
if (control is ScrollableControl)
{
barV.Maximum = intoV.ScrollMax;
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos;
barV.BringToFront();
// barV.Maximum = (control as ScrollableControl).VerticalScroll.Maximum;
// barV.Value = (control as ScrollableControl).VerticalScroll.Value;
}
else if (control is TreeView)
{
var tv = control as TreeView;
barV.Maximum = intoV.ScrollMax * tv.ItemHeight;
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos * tv.ItemHeight;
barV.BringToFront();
//barV.Maximum = GetTreeNodeMaxY(control as TreeView) - control.Height;
//barV.Value = (control as TreeView).AutoScrollOffset.Y;
}
else if (control is TextBox)
{
TextBox txt = (TextBox)control;
barV.Maximum = intoV.ScrollMax * txt.PreferredHeight;
if (txt.ScrollBars == ScrollBars.Both || txt.ScrollBars == ScrollBars.Vertical)
{
barV.Visible = true;
}
else
{
barV.Visible = false;
}
barV.Value = intoV.nPos * txt.PreferredHeight;
barV.BringToFront();
}
else if (control is RichTextBox)
{
bool blnHasVScrollbar = control.IsHandleCreated && (ControlHelper.GetWindowLong(control.Handle, STYLE) & VSCROLL) != 0;
barV.Maximum = intoV.ScrollMax;
barV.Visible = blnHasVScrollbar;
barV.Value = intoV.nPos;
barV.BringToFront();
}
else if (control is ListBox)
{
var lb = control as ListBox;
if (intoV.ScrollMax <= 1)
{
var v = lb.ItemHeight * lb.Items.Count - lb.Height;
if (v > 0)
{
barV.Maximum = v;
}
else
{
barV.Maximum = intoV.ScrollMax * lb.ItemHeight;
}
}
else
{
barV.Maximum = intoV.ScrollMax * lb.ItemHeight;
}
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos * lb.ItemHeight;
barV.BringToFront();
}
else if (control is ListView)
{
barV.Maximum = intoV.ScrollMax;
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos;
barV.BringToFront();
}
else if (control is DataGridView)
{
bool blnHasVScrollbar = false;
var dgv = (DataGridView)control;
if (dgv.ScrollBars == ScrollBars.Both || dgv.ScrollBars == ScrollBars.Vertical)
{
int _height = dgv.RowTemplate.Height * dgv.Rows.Count;
if (dgv.ColumnHeadersVisible)
{
_height += dgv.ColumnHeadersHeight;
}
blnHasVScrollbar = _height > dgv.Height;
}
barV.Maximum = dgv.Rows.Count;
barV.Visible = blnHasVScrollbar;
barV.Value = dgv.FirstDisplayedScrollingRowIndex;;
barV.BringToFront();
}
}
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 (control is TextBox)
{
var txt = (TextBox)control;
if (txt.ScrollBars == ScrollBars.Both)
{
blnHasVScrollbar = true;
blnHasHScrollbar = true;
}
else if (txt.ScrollBars == ScrollBars.Vertical)
{
blnHasVScrollbar = true;
blnHasHScrollbar = false;
}
else if (txt.ScrollBars == ScrollBars.Horizontal)
{
blnHasVScrollbar = false;
blnHasHScrollbar = true;
}
else
{
blnHasVScrollbar = false;
blnHasHScrollbar = false;
}
}
else if (control is DataGridView)
{
var dgv = (DataGridView)control;
if (dgv.ScrollBars == ScrollBars.Both || dgv.ScrollBars == ScrollBars.Vertical)
{
int _height = dgv.RowTemplate.Height * dgv.Rows.Count;
if (dgv.ColumnHeadersVisible)
{
_height += dgv.ColumnHeadersHeight;
}
blnHasVScrollbar = _height > dgv.Height;
}
if (dgv.ScrollBars == ScrollBars.Both || dgv.ScrollBars == ScrollBars.Horizontal)
{
int _width = 0;
foreach (DataGridViewColumn com in dgv.Columns)
{
_width += com.Width;
}
if (dgv.RowHeadersVisible)
{
_width += dgv.RowHeadersWidth;
}
blnHasHScrollbar = _width > dgv.Width;
}
}
else if (control is ListView)
{
if (!((ListView)control).Scrollable)
{
blnHasVScrollbar = false;
blnHasHScrollbar = false;
}
}
if (blnHasVScrollbar)
{
if (!m_lstVCache.ContainsKey(control))
{
if (control.Parent != null)
{
UCVScrollbar barV = new UCVScrollbar();
barV.SmallChange = 5;
barV.Width = SystemInformation.VerticalScrollBarWidth + 1;
barV.Scroll += barV_Scroll;
m_lstVCache[control] = barV;
if (blnHasHScrollbar)
{
barV.Height = control.Height - barV.Width;
}
else
{
barV.Height = control.Height;
}
SetVMaxNum(control);
barV.Location = new System.Drawing.Point(control.Right - barV.Width, control.Top);
control.Parent.Controls.Add(barV);
int intControlIndex = control.Parent.Controls.GetChildIndex(control);
control.Parent.Controls.SetChildIndex(barV, intControlIndex);
}
}
else
{
if (blnHasHScrollbar)
{
m_lstVCache[control].Height = control.Height - m_lstVCache[control].Width;
}
else
{
m_lstVCache[control].Height = control.Height;
}
SetVMaxNum(control);
}
}
else
{
if (m_lstVCache.ContainsKey(control) && m_lstVCache[control].Parent != null)
{
m_lstVCache[control].Visible = false;
}
}
if (blnHasHScrollbar)
{
if (!m_lstHCache.ContainsKey(control))
{
if (control.Parent != null)
{
UCHScrollbar barH = new UCHScrollbar();
barH.Height = SystemInformation.HorizontalScrollBarHeight + 1;
barH.SmallChange = 5;
barH.Scroll += barH_Scroll;
m_lstHCache[control] = barH;
if (blnHasHScrollbar)
{
barH.Width = control.Width - barH.Height;
}
else
{
barH.Width = control.Width;
}
SetHMaxNum(control);
barH.Location = new System.Drawing.Point(control.Left, control.Bottom - barH.Height);
control.Parent.Controls.Add(barH);
int intControlIndex = control.Parent.Controls.GetChildIndex(control);
control.Parent.Controls.SetChildIndex(barH, intControlIndex);
}
}
else
{
if (blnHasHScrollbar)
{
m_lstHCache[control].Width = control.Width - m_lstHCache[control].Height;
}
else
{
m_lstHCache[control].Width = control.Width;
}
SetHMaxNum(control);
}
}
else
{
if (m_lstHCache.ContainsKey(control))
{
if (m_lstHCache[control].Visible && m_lstHCache[control].Parent != null)
{
m_lstHCache[control].Visible = false;
}
}
}
}
ResetScrollLocation(sender);
}
