public virtual void SetBackground(string imagePath, ContentStretch stretch)
{
BackgroundHexCode = null;
Backer = new ImageControl {
Size = Size.ToSize(), Stretch = stretch,
};
Backer.Loaded += (o, ev) => Redraw();
Backer.FilePath = imagePath;
}
public void FitText()
{
if (!_hasMeasured)
{
return;
}
const string ellipsisChars = "... ";
var constraints = Size.ToSize();
Size s = CoreDll.MeasureString(" " + _title + " ", Font.ToFont(), constraints, false, true) + _margins;
// control is large enough to display the whole text
if (s.Width <= Width)
{
return;
}
int len = 0;
int seg = _title.Length;
string fit = string.Empty;
// find the longest string that fits into the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = _title.Length;
if (left > right)
{
continue;
}
// build and measure a candidate string with ellipsis
string tst = " " + _title.Substring(0, left).TrimEnd() + ellipsisChars;
s = CoreDll.MeasureString(tst, Font.ToFont(), constraints, false, true) + _margins;
// candidate string fits into control boundaries,
// try a longer string
// stop when seg <= 1
if (s.Width <= Width)
{
len += seg;
fit = tst;
}
}
base.Text = len == 0 ? ellipsisChars : fit;
}
protected override void OnResize(EventArgs e)
{
var t = CompactFactory.MetricStopwatch.ElapsedTicks;
if (Parent == null || Width == _width)
{
return;
}
var minSize = new Size(MinWidth, MinHeight);
var maxSize = new Size(MaxWidth, MaxHeight);
var size = this.PerformLayout(minSize, maxSize);
if (Backer != null && Backer.Size != size)
{
Backer.Size = size;
if (CellBitmap != null)
{
var bit = CellBitmap;
Bitmaps.Remove(this);
bit.Dispose();
mem -= Width * Height * 4;
}
}
if (size.ToSize() == Size)
{
Debug.WriteLine(string.Format("Unnecessary resize at {0}", size));
return;
}
Debug.WriteLine(string.Format("Resize {0} -> {1}", Size.ToSize(), size));
if (Size.Height != (int)size.Height)
{
Size = size.ToSize();
if (Parent != null && Parent.Parent is SmoothListbox)
{
((SmoothListbox)Parent.Parent).LayoutItems(this);
}
}
else
{
Size = size.ToSize();
}
_width = Size.Width;
Debug.WriteLineIf(CompactFactory.MetricStopwatch.IsRunning, string.Format("[{1}] Grid resize took {0}ms", new TimeSpan(CompactFactory.MetricStopwatch.ElapsedTicks - t).TotalMilliseconds, CompactFactory.MetricStopwatch.ElapsedMilliseconds));
}
