private static float FontSize(FontWarpFactor fontWarpFactor, int height)
{
float size = 0f;
switch (fontWarpFactor)
{
case FontWarpFactor.None:
size = height * 0.7f;
break;
case FontWarpFactor.Low:
size = height * 0.8f;
break;
case FontWarpFactor.Medium:
size = height * 0.85f;
break;
case FontWarpFactor.High:
size = height * 0.9f;
break;
}
return(size);
}
private static Pair <float> WarpMutipliers(FontWarpFactor fontWarpFactor)
{
float m1 = 1f;
float m2 = 1f;
switch (fontWarpFactor)
{
case FontWarpFactor.None:
break;
case FontWarpFactor.Low:
m1 = 6f;
m2 = 1f;
break;
case FontWarpFactor.Medium:
m1 = 5f;
m2 = 1.3f;
break;
case FontWarpFactor.High:
m1 = 4.5f;
m2 = 1.4f;
break;
}
return(new Pair <float>(m1, m2));
}
public CaptchaImage()
{
_rand = new Random();
_fontWarp = FontWarpFactor.Low;
_backgroundNoise = BackgroundNoiseLevel.Low;
_lineNoise = LineNoiseLevel.None;
_width = 180;
_height = 50;
_randomTextLength = 5;
_randomTextChars = "ACDEFGHJKLNPQRTUVXYZ2346789";
_fontFamilyName = "";
// -- a list of known good fonts in on both Windows XP and Windows Server 2003
_fontWhitelist = "arial;arial black;comic sans ms;courier new;estrangelo edessa;franklin gothic medium;" + "georgia;lucida console;lucida sans unicode;mangal;microsoft sans serif;palatino linotype;" + "sylfaen;tahoma;times new roman;trebuchet ms;verdana";
Refresh();
}
public WarpTextDrawing(int width, int height, string fonts, Color textColor, FontWarpFactor fontWarpFactor)
{
m_width = width;
m_height = height;
m_fonts = ParseFonts(fonts);
m_textColor = textColor;
m_fontSize = FontSize(fontWarpFactor, height);
if (fontWarpFactor != FontWarpFactor.None)
{
var m = WarpMutipliers(fontWarpFactor);
m_warpMultiplier1 = m.First;
m_warpMultiplier2 = m.Second;
m_strategy = WarpText;
}
}
public CaptchaImage()
{
_rand = new Random();
_fontWarp = FontWarpFactor.Low;
_backgroundNoise = BackgroundNoiseLevel.Low;
_lineNoise = LineNoiseLevel.None;
_width = 180;
_height = 50;
_randomTextLength = 5;
_randomTextChars = "ACDEFGHJKLNPQRTUVXYZ2346789";
_fontFamilyName = "";
// -- a list of known good fonts in on both Windows XP and Windows Server 2003
_fontWhitelist = "arial;arial black;comic sans ms;courier new;estrangelo edessa;franklin gothic medium;" + "georgia;lucida console;lucida sans unicode;mangal;microsoft sans serif;palatino linotype;" + "sylfaen;tahoma;times new roman;trebuchet ms;verdana";
_randomText = GenerateRandomText();
_generatedAt = DateTime.Now;
_guid = Guid.NewGuid().ToString();
}
public Variant12()
{
m_rand = new Random();
m_fontWarp = FontWarpFactor.Low;
m_backgroundNoise = BackgroundNoiseLevel.Low;
m_lineNoise = LineNoiseLevel.None;
m_width = 180;
m_height = 50;
m_randomTextLength = 5;
m_randomTextChars = "ACDEFGHJKLNPQRTUVXYZ2346789";
m_fontFamilyName = "";
// -- a list of known good fonts in on both Windows XP and Windows Server 2003
m_fontWhitelist = "arial;arial black;comic sans ms;courier new;estrangelo edessa;franklin gothic medium;" + "georgia;lucida console;lucida sans unicode;mangal;microsoft sans serif;palatino linotype;" + "sylfaen;tahoma;times new roman;trebuchet ms;verdana";
m_randomText = GenerateRandomText();
m_generatedAt = DateTime.Now;
m_guid = Guid.NewGuid().ToString();
}
public CaptchaImage(Color line, Color text, Color background)
{
_rand = new Random();
_fontWarp = FontWarpFactor.High;
_backgroundNoise = BackgroundNoiseLevel.None;
_lineNoise = LineNoiseLevel.High;
_width = 180;
_height = 50;
_randomTextLength = 3;
_randomTextChars = "012346789";
_fontFamilyName = "";
// -- a list of known good fonts in on both Windows XP and Windows Server 2003
_fontWhitelist = "arial;arial black;comic sans ms;courier new;estrangelo edessa;franklin gothic medium;" + "georgia;lucida console;lucida sans unicode;mangal;microsoft sans serif;palatino linotype;" + "sylfaen;tahoma;times new roman;trebuchet ms;verdana";
_randomText = GenerateRandomText();
_generatedAt = DateTime.Now;
_guid = Guid.NewGuid().ToString();
_line = line;
_text = text;
_background = background;
}