public static ColorString Escape(string str, Func <char, ColorPair> exchange)
{
if (str == null)
{
return(null);
}
else if (str.Length == 0)
{
return(null);
}
char ch = str[0];
ColorPair current = exchange(ch);
StringBuilder sb = new StringBuilder(current.ToString());
sb.Append(current);
sb.Append(ch);
for (int i = 1; i < str.Length; i++)
{
ch = str[i];
ColorPair next = exchange(ch);
if (current != next)
{
sb.Append(next.ToString());
current = next;
}
sb.Append(ch);
}
return(new ColorString(sb.ToString()));
}
public static ColorPair From(ushort foreground, ushort background)
{
short fg = (short)(foreground + 1);
short bg = (short)(background + 1);
var col = colors[fg, bg];
if (col == null) {
col = new ColorPair(foreground, background);
colors[fg, bg] = col;
}
return col;
}
public static ColorPair From(ushort foreground, ushort background)
{
short fg = (short)(foreground + 1);
short bg = (short)(background + 1);
var col = colors[fg, bg];
if (col == null)
{
col = new ColorPair(foreground, background);
colors[fg, bg] = col;
}
return(col);
}
public static void DrawV(Widget widget, int x, int y, int height, ColorPair color)
{
Curses.attron(color.Attribute);
DrawV(widget, x, y, height);
Curses.attron(ColorPair.From(-1, -1).Attribute);
}
public static void DrawH(Widget widget, int x, int y, int width, ColorPair color)
{
Curses.attron(color.Attribute);
DrawH(widget, x, y, width);
Curses.attron(ColorPair.From(-1, -1).Attribute);
}
public bool PairEquals(ColorPair cp)
{
return (Pair == cp.Pair) && ColorEquals(cp);
}
public bool ColorEquals(ColorPair cp)
{
return (cp.Foreground == Foreground) && (cp.Background == Background);
}
public bool PairEquals(ColorPair cp)
{
return((Pair == cp.Pair) && ColorEquals(cp));
}
public bool ColorEquals(ColorPair cp)
{
return((cp.Foreground == Foreground) && (cp.Background == Background));
}
public static void Finish()
{
Curses.attron(ColorPair.From(-1, -1).Attribute);
}
public static int Each(string str, Func <char, bool> callback)
{
int n = 0;
DrawStringMode mode = DrawStringMode.Normal;
string fg = string.Empty;
string bg = string.Empty;
foreach (char c in str)
{
switch (mode)
{
case DrawStringMode.Normal:
if (c == '\x0000')
{
mode = DrawStringMode.ForegroundColor;
}
else
{
if (!callback(c))
{
return(n);
}
n++;
}
break;
case DrawStringMode.ForegroundColor:
if (char.IsNumber(c))
{
fg += c;
}
else if (c == ',')
{
mode = DrawStringMode.Background;
}
else if (c == ' ')
{
ushort foreground = ushort.MaxValue;
if (fg != string.Empty)
{
foreground = ushort.Parse(fg);
}
Curses.attron(ColorPair.From(foreground, ushort.MaxValue).Attribute);
fg = string.Empty;
mode = DrawStringMode.Normal;
}
else
{
throw new Exception("Malformed color string");
}
break;
case DrawStringMode.Background:
if (char.IsNumber(c))
{
bg += c;
}
else if (c == ' ')
{
Curses.attron(ColorPair.From(ushort.Parse(fg), ushort.Parse(bg)).Attribute);
fg = string.Empty;
bg = string.Empty;
mode = DrawStringMode.Normal;
}
else
{
throw new Exception("Malformed color string");
}
break;
}
}
return(n);
}
