public void Paint(Graphics g)
{
if (Visibility != Visibility.Visible || string.IsNullOrEmpty(Text))
{
return;
}
IntPtr hdcTemp = IntPtr.Zero;
IntPtr oldFont = IntPtr.Zero;
IntPtr currentFont = IntPtr.Zero;
try
{
hdcTemp = g.GetHdc();
if (hdcTemp != IntPtr.Zero)
{
currentFont = Font.ToFont().ToHfont();
oldFont = CoreDll.SelectObject(hdcTemp, currentFont);
var rect = new Rect
{
Left = (int)Location.X,
Top = (int)Location.Y,
Right = (int)(Location.X + Size.Width),
Bottom = (int)(Location.Y + Size.Height),
};
var color = (Highlight ? HighlightColor : ForegroundColor).ToColor();
CoreDll.SetTextColor(hdcTemp, color.R | (color.G << 8) | (color.B << 16));
CoreDll.SetBkMode(hdcTemp, 1);
var flags = CoreDll.DT_END_ELLIPSIS | CoreDll.DT_NOPREFIX;
if (Lines != 1)
{
flags += CoreDll.DT_WORDBREAK;
}
CoreDll.DrawText(hdcTemp, Text, Text.Length, ref rect, flags);
}
}
finally
{
if (oldFont != IntPtr.Zero)
{
CoreDll.SelectObject(hdcTemp, oldFont);
}
if (hdcTemp != IntPtr.Zero)
{
g.ReleaseHdc(hdcTemp);
}
if (currentFont != IntPtr.Zero)
{
CoreDll.DeleteObject(currentFont);
}
}
}
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;
}
public static System.Drawing.Font ToFont(this Font UiFont)
{
return(new System.Drawing.Font(UiFont.Name, (float)UiFont.Size, (FontStyle)UiFont.Formatting));
}
public Size Measure(Size constraints)
{
var measure = CoreDll.MeasureString(" " + _title + " ", Font.ToFont(), constraints, false, true) + _margins;
return(new Size(measure.Width, Math.Max(measure.Height, 33 * CompactFactory.Instance.DpiScale)));
}
protected override double GetLineHeight(Font font)
{
return(CoreDll.MeasureString("Wq", font.ToFont(), new Size(1000, 1000), false, true).Height);
}
public Size Measure(Size constraints)
{
return(CoreDll.MeasureString(Text, Font.ToFont(), constraints, Lines != 1, false));
}
