private void UpdateScrollValues()
{
WinApi.SCROLLBARINFO psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(m_ParentScrollBar.Handle, (uint)WinApi.eObjectId.OBJID_CLIENT, ref psbi);
Rectangle displayRect = new Rectangle(0, 0, m_ParentScrollBar.Width, m_ParentScrollBar.Height);
if (IsVScroll)
{
if (m_ScrollBarCore.DisplayRectangle != displayRect)
m_ScrollBarCore.DisplayRectangle = displayRect;
Rectangle thumbRect = new Rectangle(displayRect.X, displayRect.Y, displayRect.Width, psbi.dxyLineButton);
if (m_ScrollBarCore.ThumbDecreaseRectangle != thumbRect)
m_ScrollBarCore.ThumbDecreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.X, displayRect.Bottom - psbi.dxyLineButton, displayRect.Width, psbi.dxyLineButton);
if (m_ScrollBarCore.ThumbIncreaseRectangle != thumbRect)
m_ScrollBarCore.ThumbIncreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.X, displayRect.Y + psbi.xyThumbTop, displayRect.Width, psbi.xyThumbBottom - psbi.xyThumbTop);
if (m_ScrollBarCore.TrackRectangle != thumbRect)
m_ScrollBarCore.TrackRectangle = thumbRect;
}
else
{
if (m_ScrollBarCore.DisplayRectangle != displayRect)
m_ScrollBarCore.DisplayRectangle = displayRect;
Rectangle thumbRect = new Rectangle(displayRect.X, displayRect.Y, psbi.dxyLineButton, displayRect.Height);
if (m_ScrollBarCore.ThumbDecreaseRectangle != thumbRect)
m_ScrollBarCore.ThumbDecreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.Right - psbi.dxyLineButton, displayRect.Y, psbi.dxyLineButton, displayRect.Height);
if (m_ScrollBarCore.ThumbIncreaseRectangle != thumbRect)
m_ScrollBarCore.ThumbIncreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.X + psbi.xyThumbTop, displayRect.Y, psbi.xyThumbBottom - psbi.xyThumbTop, displayRect.Height);
if (m_ScrollBarCore.TrackRectangle != thumbRect)
m_ScrollBarCore.TrackRectangle = thumbRect;
}
if (m_ScrollBarCore.Minimum != m_ParentScrollBar.Minimum)
m_ScrollBarCore.Minimum = m_ParentScrollBar.Minimum;
if (m_ScrollBarCore.Maximum != m_ParentScrollBar.Maximum)
m_ScrollBarCore.Maximum = m_ParentScrollBar.Maximum;
if (m_ScrollBarCore.SmallChange != m_ParentScrollBar.SmallChange)
m_ScrollBarCore.SmallChange = m_ParentScrollBar.SmallChange;
if (m_ScrollBarCore.LargeChange != m_ParentScrollBar.LargeChange)
m_ScrollBarCore.LargeChange = m_ParentScrollBar.LargeChange;
if (m_ScrollBarCore.Value != m_ParentScrollBar.Value)
m_ScrollBarCore.Value = m_ParentScrollBar.Value;
}
//private void PaintUnBuffered()
//{
// IntPtr dc = WinApi.GetWindowDC(m_Control.Handle);
// try
// {
// using (Graphics g = Graphics.FromHdc(dc))
// {
// g.SetClip(GetClientRectangle(), CombineMode.Exclude);
// if (!ShouldSkinScrollbars)
// {
// WinApi.SCROLLBARINFO psbi = new WinApi.SCROLLBARINFO();
// psbi.cbSize = Marshal.SizeOf(psbi);
// WinApi.GetScrollBarInfo(m_Control.Handle, (uint)WinApi.eObjectId.OBJID_VSCROLL, ref psbi);
// if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
// {
// Rectangle rvs = ScreenToNonClientRectangle(psbi.rcScrollBar.ToRectangle());
// g.SetClip(rvs, System.Drawing.Drawing2D.CombineMode.Exclude);
// }
// psbi = new WinApi.SCROLLBARINFO();
// psbi.cbSize = Marshal.SizeOf(psbi);
// WinApi.GetScrollBarInfo(m_Control.Handle, (uint)WinApi.eObjectId.OBJID_HSCROLL, ref psbi);
// if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
// {
// Rectangle rvs = ScreenToNonClientRectangle(psbi.rcScrollBar.ToRectangle());
// g.SetClip(rvs, System.Drawing.Drawing2D.CombineMode.Exclude);
// }
// }
// PaintNonClientArea(g);
// g.ResetClip();
// }
// }
// finally
// {
// WinApi.ReleaseDC(m_Control.Handle, dc);
// }
//}
private void RenderNonClientAreaBitmap(BufferedBitmap bmp)
{
if (bmp == null) return;
IntPtr dc = WinApi.GetWindowDC(m_Control.Handle);
try
{
using (Graphics g = Graphics.FromHdc(dc))
{
Rectangle[] clips = new Rectangle[3];
clips[0] = GetClientRectangle();
if (!ShouldSkinScrollbars)
{
WinApi.SCROLLBARINFO psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(m_Control.Handle, (uint)WinApi.eObjectId.OBJID_VSCROLL, ref psbi);
if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
{
Rectangle rvs = ScreenToNonClientRectangle(psbi.rcScrollBar.ToRectangle());
clips[1] = rvs;
}
psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(m_Control.Handle, (uint)WinApi.eObjectId.OBJID_HSCROLL, ref psbi);
if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
{
Rectangle rvs = ScreenToNonClientRectangle(psbi.rcScrollBar.ToRectangle());
clips[2] = rvs;
}
}
bmp.Render(g, clips);
}
}
finally
{
WinApi.ReleaseDC(m_Control.Handle, dc);
}
}
public void UpdateScrollValues()
{
if (!ShouldSkinScrollbars) return;
WinApi.SCROLLBARINFO psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(m_Control.Handle, (uint)WinApi.eObjectId.OBJID_VSCROLL, ref psbi);
if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
{
Rectangle displayRect = ScreenToNonClientRectangle(psbi.rcScrollBar.ToRectangle());
if (m_VScrollBar.DisplayRectangle != displayRect)
m_VScrollBar.DisplayRectangle = displayRect;
Rectangle thumbRect = new Rectangle(displayRect.X, displayRect.Y, displayRect.Width, psbi.dxyLineButton);
if (m_VScrollBar.ThumbDecreaseRectangle != thumbRect)
m_VScrollBar.ThumbDecreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.X, displayRect.Bottom - psbi.dxyLineButton, displayRect.Width, psbi.dxyLineButton);
if (m_VScrollBar.ThumbIncreaseRectangle != thumbRect)
m_VScrollBar.ThumbIncreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.X, displayRect.Y + psbi.xyThumbTop, displayRect.Width, psbi.xyThumbBottom - psbi.xyThumbTop);
if (m_VScrollBar.TrackRectangle != thumbRect)
m_VScrollBar.TrackRectangle = thumbRect;
if (psbi.rgstate[0] == (int)WinApi.eStateFlags.STATE_SYSTEM_UNAVAILABLE)
{
if (m_VScrollBar.Enabled) m_VScrollBar.Enabled = false;
}
else if (!m_VScrollBar.Enabled)
m_VScrollBar.Enabled = true;
m_VScrollBar.Visible = true;
}
else
m_VScrollBar.Visible = false;
// Horizontal scroll bar
psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(m_Control.Handle, (uint)WinApi.eObjectId.OBJID_HSCROLL, ref psbi);
if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
{
Rectangle displayRect = ScreenToNonClientRectangle(psbi.rcScrollBar.ToRectangle());
if (m_HScrollBar.DisplayRectangle != displayRect)
m_HScrollBar.DisplayRectangle = displayRect;
Rectangle thumbRect = new Rectangle(displayRect.X, displayRect.Y, psbi.dxyLineButton, displayRect.Height);
if (m_HScrollBar.ThumbDecreaseRectangle != thumbRect)
m_HScrollBar.ThumbDecreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.Right - psbi.dxyLineButton, displayRect.Y, psbi.dxyLineButton, displayRect.Height);
if (m_HScrollBar.ThumbIncreaseRectangle != thumbRect)
m_HScrollBar.ThumbIncreaseRectangle = thumbRect;
thumbRect = new Rectangle(displayRect.X + psbi.xyThumbTop, displayRect.Y, psbi.xyThumbBottom - psbi.xyThumbTop, displayRect.Height);
if (m_HScrollBar.TrackRectangle != thumbRect)
m_HScrollBar.TrackRectangle = thumbRect;
if (psbi.rgstate[0] == (int)WinApi.eStateFlags.STATE_SYSTEM_UNAVAILABLE)
{
if (m_HScrollBar.Enabled) m_VScrollBar.Enabled = false;
}
else if (!m_HScrollBar.Enabled)
m_HScrollBar.Enabled = true;
m_HScrollBar.Visible = true;
}
else
m_HScrollBar.Visible = false;
}
protected virtual void UpdateScrollBars()
{
if (!IsHandleCreated || _UpdatingScrollbars) return;
_UpdatingScrollbars = true;
try
{
Control scrollOverrideControl = _ScrollOverrideControl;
if (scrollOverrideControl == null)
{
if (_HScrollBar.Visible) _HScrollBar.Visible = false;
if (_VScrollBar.Visible) _VScrollBar.Visible = false;
return;
}
WinApi.SCROLLBARINFO psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(scrollOverrideControl.Handle, (uint)WinApi.eObjectId.OBJID_VSCROLL, ref psbi);
if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
{
Rectangle vsBounds = psbi.rcScrollBar.ToRectangle();
vsBounds.Location = this.PointToClient(vsBounds.Location);
Rectangle scrollCountrolBounds = _ScrollOverrideControl.Bounds;
if (!scrollCountrolBounds.Contains(vsBounds))
{
// We need to guess bounds for best performance and appearance
if (vsBounds.Right > scrollCountrolBounds.Right)
{
vsBounds.X = scrollCountrolBounds.Right - vsBounds.Width;
}
else if (vsBounds.X < scrollCountrolBounds.X)
{
vsBounds.X = 0;
}
}
if (_VScrollBar.Bounds != vsBounds)
{
_VScrollBar.Bounds = vsBounds;
UpdateVerticalScrollBarValues();
}
if (!_VScrollBar.Visible)
{
_VScrollBar.Visible = true;
_VScrollBar.Refresh();
InvokeDelayed(new MethodInvoker(delegate { UpdateVerticalScrollBarValues(); }), ScrollPositionUpdateDelay);
}
if (psbi.rgstate[0] == (int)WinApi.eStateFlags.STATE_SYSTEM_UNAVAILABLE)
_VScrollBar.Enabled = false;
else if (!_VScrollBar.Enabled)
_VScrollBar.Enabled = true;
//Console.WriteLine("VscrollBar Bounds detection {0}", vsBounds);
}
else if (_VScrollBar.Visible)
_VScrollBar.Visible = false;
psbi = new WinApi.SCROLLBARINFO();
psbi.cbSize = Marshal.SizeOf(psbi);
WinApi.GetScrollBarInfo(scrollOverrideControl.Handle, (uint)WinApi.eObjectId.OBJID_HSCROLL, ref psbi);
if (psbi.rgstate[0] != (int)WinApi.eStateFlags.STATE_SYSTEM_INVISIBLE)
{
Rectangle hsBounds = psbi.rcScrollBar.ToRectangle();
hsBounds.Location = this.PointToClient(hsBounds.Location);
Rectangle scrollCountrolBounds = _ScrollOverrideControl.Bounds;
if (!scrollCountrolBounds.Contains(hsBounds))
{
// We need to guess bounds for best performance and appearance
if (hsBounds.Bottom > scrollCountrolBounds.Bottom)
{
hsBounds.Y = scrollCountrolBounds.Bottom - hsBounds.Height;
}
}
if (_VScrollBar.Visible && hsBounds.Width == scrollCountrolBounds.Width)
hsBounds.Width -= _VScrollBar.Width;
if (_HScrollBar.Bounds != hsBounds)
{
_HScrollBar.Bounds = hsBounds;
UpdateHorizontalScrollBarValues();
}
if (!_HScrollBar.Visible)
{
_HScrollBar.Visible = true;
_HScrollBar.Refresh();
InvokeDelayed(new MethodInvoker(delegate { UpdateHorizontalScrollBarValues(); }), ScrollPositionUpdateDelay);
}
if (psbi.rgstate[0] == (int)WinApi.eStateFlags.STATE_SYSTEM_UNAVAILABLE)
_HScrollBar.Enabled = false;
else if (!_HScrollBar.Enabled)
_HScrollBar.Enabled = true;
}
else if (_HScrollBar.Visible)
_HScrollBar.Visible = false;
if (_HScrollBar.Visible && _VScrollBar.Visible)
{
_Thumb.Bounds = new Rectangle(_VScrollBar.Left, _VScrollBar.Bounds.Bottom, _VScrollBar.Width, _HScrollBar.Height);
_Thumb.Visible = true;
}
else
{
_Thumb.Visible = false;
}
}
finally
{
_UpdatingScrollbars = false;
}
}
