public static Size DrawFixedWidthTip(Control control, Graphics graphics, TipSection tipData)
{
Size tipSize = Size.Empty;
SizeF tipSizeF = SizeF.Empty;
PointF screenLocation = control.PointToScreen(new Point(control.Width, 0));
RectangleF workingArea = GetWorkingArea(control);
SizeF maxLayoutSize = new SizeF(screenLocation.X - HorizontalBorder * 2,
workingArea.Bottom - screenLocation.Y - VerticalBorder * 2);
if (maxLayoutSize.Width > 0 && maxLayoutSize.Height > 0)
{
graphics.TextRenderingHint =
TextRenderingHint.AntiAliasGridFit;
tipData.SetMaximumSize(maxLayoutSize);
tipSizeF = tipData.GetRequiredSize();
tipData.SetAllocatedSize(tipSizeF);
tipSizeF += new SizeF(HorizontalBorder * 2,
VerticalBorder * 2);
tipSize = Size.Ceiling(tipSizeF);
}
if (control.Height != tipSize.Height)
{
control.Height = tipSize.Height;
}
if (tipSize != Size.Empty)
{
Rectangle borderRectangle = new Rectangle
(Point.Empty, control.Size - new Size(1, 1));
RectangleF displayRectangle = new RectangleF
(HorizontalBorder, VerticalBorder,
tipSizeF.Width - HorizontalBorder * 2,
tipSizeF.Height - VerticalBorder * 2);
// DrawRectangle draws from Left to Left + Width. A bug? :-/
graphics.DrawRectangle(SystemPens.WindowFrame,
borderRectangle);
tipData.Draw(new PointF(HorizontalBorder, VerticalBorder));
}
return(tipSize);
}
public static Size GetLeftHandSideTipSize(Control control, Graphics graphics, TipSection tipData, Point p)
{
Size tipSize = Size.Empty;
SizeF tipSizeF = SizeF.Empty;
RectangleF workingArea = GetWorkingArea(control);
PointF screenLocation = p;
SizeF maxLayoutSize = new SizeF(screenLocation.X - HorizontalBorder * 2,
workingArea.Bottom - screenLocation.Y - VerticalBorder * 2);
if (maxLayoutSize.Width > 0 && maxLayoutSize.Height > 0)
{
graphics.TextRenderingHint =
TextRenderingHint.AntiAliasGridFit;
tipData.SetMaximumSize(maxLayoutSize);
tipSizeF = tipData.GetRequiredSize();
tipData.SetAllocatedSize(tipSizeF);
tipSizeF += new SizeF(HorizontalBorder * 2,
VerticalBorder * 2);
tipSize = Size.Ceiling(tipSizeF);
}
return(tipSize);
}
protected override void OnMaximumSizeChanged()
{
base.OnMaximumSizeChanged();
float currentDim = 0;
float otherDim = 0;
SizeF availableArea = MaximumSize;
for (int i = 0; i < tipSections.Length; i++)
{
TipSection section = (TipSection)tipSections[i];
section.SetMaximumSize(availableArea);
SizeF requiredArea = section.GetRequiredSize();
offsets[i] = currentDim;
// It's best to start on pixel borders, so this will
// round up to the nearest pixel. Otherwise there are
// weird cutoff artifacts.
float pixelsUsed;
if (isHorizontal)
{
pixelsUsed = (float)Math.Ceiling(requiredArea.Width);
currentDim += pixelsUsed;
availableArea.Width = Math.Max
(0, availableArea.Width - pixelsUsed);
otherDim = Math.Max(otherDim, requiredArea.Height);
}
else
{
pixelsUsed = (float)Math.Ceiling(requiredArea.Height);
currentDim += pixelsUsed;
availableArea.Height = Math.Max
(0, availableArea.Height - pixelsUsed);
otherDim = Math.Max(otherDim, requiredArea.Width);
}
}
foreach (TipSection section in tipSections)
{
if (isHorizontal)
{
section.SetAllocatedSize(new SizeF(section.GetRequiredSize().Width, otherDim));
}
else
{
section.SetAllocatedSize(new SizeF(otherDim, section.GetRequiredSize().Height));
}
}
if (isHorizontal)
{
SetRequiredSize(new SizeF(currentDim, otherDim));
}
else
{
SetRequiredSize(new SizeF(otherDim, currentDim));
}
}