private void ResetScrollState(RadScrollLayoutPanel.ScrollFlags flags)
{
bool flag1 = (flags & RadScrollLayoutPanel.ScrollFlags.Horizontal) == RadScrollLayoutPanel.ScrollFlags.Horizontal;
bool flag2 = (flags & RadScrollLayoutPanel.ScrollFlags.Vertical) == RadScrollLayoutPanel.ScrollFlags.Vertical;
switch (this.horizontalScrollState)
{
case ScrollState.AutoHide:
if (flag1)
{
this.horizontalScrollBar.Enabled = true;
}
this.horizontalScrollBar.Visibility = flag1 ? ElementVisibility.Visible : ElementVisibility.Collapsed;
break;
case ScrollState.AlwaysShow:
this.horizontalScrollBar.Enabled = flag1;
this.horizontalScrollBar.Visibility = ElementVisibility.Visible;
break;
case ScrollState.AlwaysHide:
this.horizontalScrollBar.Enabled = flag1;
this.horizontalScrollBar.Visibility = ElementVisibility.Collapsed;
break;
}
switch (this.verticalScrollState)
{
case ScrollState.AutoHide:
if (flag2)
{
this.verticalScrollBar.Enabled = true;
}
this.verticalScrollBar.Visibility = flag2 ? ElementVisibility.Visible : ElementVisibility.Collapsed;
break;
case ScrollState.AlwaysShow:
this.verticalScrollBar.Enabled = flag2;
this.verticalScrollBar.Visibility = ElementVisibility.Visible;
break;
case ScrollState.AlwaysHide:
this.verticalScrollBar.Enabled = flag2;
this.verticalScrollBar.Visibility = ElementVisibility.Collapsed;
break;
}
if (this.horizontalScrollBar.Visibility == ElementVisibility.Collapsed || this.verticalScrollBar.Visibility == ElementVisibility.Collapsed)
{
this.blankSpot.Visibility = ElementVisibility.Collapsed;
}
else
{
this.blankSpot.Visibility = ElementVisibility.Visible;
}
}
protected Size GetScrollBarsSize(RadScrollLayoutPanel.ScrollFlags flags)
{
int height = 0;
if (this.horizontalScrollState == ScrollState.AlwaysShow || this.horizontalScrollState == ScrollState.AutoHide && (flags & RadScrollLayoutPanel.ScrollFlags.Horizontal) == RadScrollLayoutPanel.ScrollFlags.Horizontal)
{
height = this.ScrollThickness;
}
int width = 0;
if (this.verticalScrollState == ScrollState.AlwaysShow || this.verticalScrollState == ScrollState.AutoHide && (flags & RadScrollLayoutPanel.ScrollFlags.Vertical) == RadScrollLayoutPanel.ScrollFlags.Vertical)
{
width = this.ScrollThickness;
}
return(new Size(width, height));
}
protected virtual void ArrangeViewPort(
RectangleF viewportRect,
SizeF finalSize,
RadScrollLayoutPanel.ScrollFlags flags)
{
bool flag1 = (flags & RadScrollLayoutPanel.ScrollFlags.Horizontal) == RadScrollLayoutPanel.ScrollFlags.Horizontal;
bool flag2 = (flags & RadScrollLayoutPanel.ScrollFlags.Vertical) == RadScrollLayoutPanel.ScrollFlags.Vertical;
if (flag1)
{
viewportRect.Width = this.viewport.DesiredSize.Width;
}
if (flag2)
{
viewportRect.Height = this.viewport.DesiredSize.Height;
}
this.viewport.Arrange(viewportRect);
}
protected override SizeF ArrangeOverride(SizeF finalSize)
{
(this.viewport as IRadScrollViewport)?.InvalidateViewport();
if (this.viewport == null)
{
base.ArrangeOverride(finalSize);
this.horizontalScrollBar.Visibility = ElementVisibility.Collapsed;
this.verticalScrollBar.Visibility = ElementVisibility.Collapsed;
return(finalSize);
}
this.clientSize = Size.Round(finalSize);
Size size1 = Size.Round(this.viewport.DesiredSize);
this.extentSize = this.UsePhysicalScrolling ? size1 : ((IRadScrollViewport)this.viewport).GetExtentSize();
RadScrollLayoutPanel.ScrollFlags scrollingNeeds = this.GetScrollingNeeds(this.extentSize, this.clientSize);
Size scrollBarsSize = this.GetScrollBarsSize(scrollingNeeds);
scrollBarsSize.Width = Math.Max(scrollBarsSize.Width, (int)this.VerticalScrollBar.DesiredSize.Width);
scrollBarsSize.Height = Math.Max(scrollBarsSize.Height, (int)this.HorizontalScrollBar.DesiredSize.Height);
this.viewportSize = Size.Subtract(this.clientSize, scrollBarsSize);
this.ResetScrollState(scrollingNeeds);
Size size2 = Size.Empty;
if (this.BlankSpot.Visibility == ElementVisibility.Visible)
{
size2 = scrollBarsSize;
}
float x1 = this.RightToLeft ? (float)scrollBarsSize.Width : 0.0f;
float x2 = this.RightToLeft ? (float)scrollBarsSize.Width : 0.0f;
float x3 = this.RightToLeft ? 0.0f : finalSize.Width - (float)scrollBarsSize.Width;
float x4 = this.RightToLeft ? 0.0f : finalSize.Width - (float)size2.Width;
RectangleF viewportRect = new RectangleF(x1, 0.0f, (float)this.viewportSize.Width, (float)this.viewportSize.Height);
RectangleF finalRect1 = new RectangleF(x3, 0.0f, (float)scrollBarsSize.Width, Math.Max(0.0f, finalSize.Height - (float)scrollBarsSize.Height));
RectangleF finalRect2 = new RectangleF(x2, finalSize.Height - (float)scrollBarsSize.Height, Math.Max(0.0f, finalSize.Width - (float)scrollBarsSize.Width), (float)scrollBarsSize.Height);
RectangleF finalRect3 = new RectangleF(x4, finalSize.Height - (float)size2.Height, (float)size2.Width, (float)size2.Height);
this.ArrangeViewPort(viewportRect, finalSize, scrollingNeeds);
this.VerticalScrollBar.Arrange(finalRect1);
this.HorizontalScrollBar.Arrange(finalRect2);
this.BlankSpot.Arrange(finalRect3);
this.ResetScrollPos();
return(finalSize);
}
protected RadScrollLayoutPanel.ScrollFlags GetScrollingNeeds(
Size extentSize,
Size clientSize)
{
bool bitState1 = this.GetBitState(549755813888L);
bool bitState2 = this.GetBitState(1099511627776L);
this.BitState[549755813888L] = false;
this.BitState[1099511627776L] = false;
if (extentSize.Width > clientSize.Width)
{
this.BitState[549755813888L] = true;
if (extentSize.Height > clientSize.Height - this.ScrollThickness)
{
this.BitState[1099511627776L] = true;
}
}
else if (extentSize.Width > clientSize.Width - this.ScrollThickness)
{
if (extentSize.Height > clientSize.Height)
{
this.BitState[549755813888L] = true;
this.BitState[1099511627776L] = true;
}
else if (extentSize.Height > clientSize.Height - this.ScrollThickness)
{
if (this.verticalScrollState != ScrollState.AlwaysHide && this.horizontalScrollState != ScrollState.AlwaysHide && (this.horizontalScrollState != ScrollState.AutoHide || this.verticalScrollState != ScrollState.AutoHide) && (this.verticalScrollBar.Visibility != ElementVisibility.Collapsed && this.verticalScrollState == ScrollState.AlwaysShow || this.horizontalScrollBar.Visibility != ElementVisibility.Collapsed && this.horizontalScrollState == ScrollState.AlwaysShow))
{
this.BitState[549755813888L] = true;
this.BitState[1099511627776L] = true;
}
}
else if (this.verticalScrollState == ScrollState.AlwaysShow)
{
this.BitState[549755813888L] = true;
}
}
else if (extentSize.Height > clientSize.Height)
{
this.BitState[1099511627776L] = true;
}
else if (extentSize.Height > clientSize.Height - this.ScrollThickness && this.horizontalScrollState == ScrollState.AlwaysShow)
{
this.BitState[1099511627776L] = true;
}
bool flag1 = bitState1 != this.GetBitState(549755813888L);
bool flag2 = bitState2 != this.GetBitState(1099511627776L);
if (flag1 || flag2)
{
this.OnScrollNeedsChanged(new ScrollNeedsEventArgs(bitState1, this.GetBitState(549755813888L), bitState2, this.GetBitState(1099511627776L)));
}
RadScrollLayoutPanel.ScrollFlags scrollFlags = (RadScrollLayoutPanel.ScrollFlags) 0;
if (this.GetBitState(549755813888L))
{
scrollFlags |= RadScrollLayoutPanel.ScrollFlags.Horizontal;
}
if (this.GetBitState(1099511627776L))
{
scrollFlags |= RadScrollLayoutPanel.ScrollFlags.Vertical;
}
return(scrollFlags);
}
