public void DockPaddingScroll()
{
ScrollableControl scrollable = new ScrollableControl();
scrollable.Padding = new Padding(10);
scrollable.Size = new Size(50, 50);
scrollable.AutoScroll = true;
Control c = new Control();
c.Size = scrollable.Size; // Same size as parent, shouldn' need scrollbars
c.Parent = scrollable;
Form f = new Form();
f.Controls.Add(scrollable);
f.Show();
Assert.AreEqual(false, scrollable.VerticalScroll.Visible, "#A0");
ScrollableControl.DockPaddingEdges dock_padding = scrollable.DockPadding;
Assert.IsTrue(dock_padding != null, "#B0");
// Refresh the layout, now that is affected by the creation of DockPadding
scrollable.PerformLayout();
Assert.AreEqual(true, scrollable.VerticalScroll.Visible, "#C0");
}
public static Bitmap ScrollableControlToBitmap(ScrollableControl canvas, bool fullSize, bool includeHidden)
{
canvas.AutoScrollPosition = new Point(0, 0);
if (includeHidden)
{
canvas.SuspendLayout();
foreach (Control child in canvas.Controls)
{
child.Visible = true;
}
canvas.ResumeLayout(true);
}
canvas.PerformLayout();
Size containerSize = canvas.DisplayRectangle.Size;
if (fullSize)
{
containerSize.Width = Math.Max(containerSize.Width, canvas.ClientSize.Width);
containerSize.Height = Math.Max(containerSize.Height, canvas.ClientSize.Height);
}
else
{
containerSize = (canvas is Form) ? canvas.PreferredSize : canvas.ClientSize;
}
var bitmap = new Bitmap(containerSize.Width, containerSize.Height, PixelFormat.Format32bppArgb);
bitmap.SetResolution(canvas.DeviceDpi, canvas.DeviceDpi);
var graphics = Graphics.FromImage(bitmap);
graphics.Clear(canvas.BackColor);
var rtfPrinter = new RichEditPrinter(graphics);
try
{
DrawNestedControls(canvas, canvas, new Rectangle(Point.Empty, containerSize), bitmap, rtfPrinter);
return(bitmap);
}
finally
{
rtfPrinter.Dispose();
graphics.Dispose();
}
}
/// <summary>
/// Disable all default scroll bar event handlers on any child controls of controlOverride.
/// All mouse scrolls will cause the scroll bar on showScrollOn to change.
/// </summary>
public static void OverrideScrollBar(ScrollableControl showScrollOn,
Control controlOverride)
{
controlOverride.Controls.Cast <Control>().ForEach(
i => OverrideScrollBar(showScrollOn, i));
controlOverride.MouseWheel += (s, e) =>
{
((HandledMouseEventArgs)e).Handled = true;
var scroll = showScrollOn.VerticalScroll;
if (scroll.Visible)
{
scroll.Value = Numbers.LimitToRange(scroll.Value - e.Delta,
scroll.Minimum, scroll.Maximum);
showScrollOn.PerformLayout();
}
};
}