// NOTE: MinimumSize size is only specified when background is null so that ArgumentNullException may be thrown by this constructor
// after the base constructor is finished.
protected BackgroundVerificationCodeImage(Image background, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
: base((background == null) ? MinimumSize : background.Size, textProvider, characterSet, maximumCharacters, minimumCharacters)
{
if (background == null)
throw new ArgumentNullException("background");
this.background = background;
}
public PartitionedVerificationCodeImage(Image background, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
: base(background, textProvider, characterSet, maximumCharacters, minimumCharacters)
{
if (textProvider == null)
throw new ArgumentNullException("textProvider");
minFontSize = textProvider.MinimumFontSize;
maxFontSize = textProvider.MaximumFontSize;
}
public LineNoiseVerificationCodeImage(Size size, VerificationCodeTextProvider textProvider, IEnumerable<Color> colors, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
: base(size, textProvider, characterSet, maximumCharacters, minimumCharacters)
{
if (colors == null)
this.colors = new List<Color>(1);
else
this.colors = new List<Color>(colors);
if (this.colors.Count == 0)
this.colors.Add(Color.Black);
}
/// <summary>
/// 生成干扰图像
/// </summary>
/// <param name="name"></param>
/// <param name="size"></param>
/// <param name="textProvider"></param>
/// <param name="characterSet"></param>
/// <param name="maximumCharacters"></param>
/// <param name="minimumCharacters"></param>
/// <returns></returns>
public override VerificationCodeImage GenerateAutoInputProtectionImage(string name, Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
{
LineNoiseVerificationCodeImage image = new LineNoiseVerificationCodeImage(size, textProvider, colors, characterSet, maximumCharacters, minimumCharacters);
// code added after 1.0.0 RTW:
if (Margin != -1)
image.Margin = Margin;
if (MinimumCharacterRotation != -1)
image.MinimumCharacterRotation = MinimumCharacterRotation;
if (MaximumCharacterRotation != -1)
image.MaximumCharacterRotation = MaximumCharacterRotation;
return image;
}
protected VerificationCodeImage(Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
{
if (textProvider == null)
throw new ArgumentNullException("textProvider");
if (size.Width < MinimumSize.Width || size.Height < MinimumSize.Height)
throw new ArgumentOutOfRangeException("size", size, "Errors.SizePositiveIntRequired");
this.textProvider = textProvider;
if (maximumCharacters.HasValue)
this.textProvider.MaximumCharacters = maximumCharacters.Value;
if (minimumCharacters.HasValue)
this.textProvider.MinimumCharacters = minimumCharacters.Value;
this.size = size;
this.fonts = new List<Font>(textProvider.Fonts);
this.textColors = new List<Color>(textProvider.Colors);
this.characterSet = characterSet;
}
protected BackgroundVerificationCodeImage(Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
: base(size, textProvider, characterSet, maximumCharacters, minimumCharacters)
{
}
private static void InitializeTextProviders(bool isHasSection, VerificationCodeSection section)
{
if (isHasSection)
{
ProvidersHelper.InstantiateProviders(section.TextProviders, TextProviderCollection,
typeof (VerificationCodeTextProvider));
if (
section.DefaultTextProvider.Equals(
section.ElementInformation.Properties["defaultTextProvider"].DefaultValue))
{
if (TextProviderCollection.Count > 0)
textProvider = TextProviderCollection[0];
else
{
textProvider =
new BasicEnglishVerificationCodeTextProvider(new[] {Color.Black, Color.Red, Color.Brown},
new[]
{
new Font("Times New Roman", 1), new Font("Arial", 1),
new Font("Microsoft Sans Serif", 1)
});
}
}
else
{
textProvider = TextProviderCollection[section.DefaultTextProvider];
}
if (textProvider == null) throw new InvalidOperationException("验证码字符配置出错");
}
else if (textProvider == null)
{
section.TextProviders.Add(CreateProviderSettings(section.DefaultTextProvider,
typeof (BasicEnglishVerificationCodeTextProvider),
new KeyValuePair<string, string>("colors", "Red,Green,Blue,Brown"),
new KeyValuePair<string, string>("fonts", "Times New Roman, Arial, Microsoft Sans Serif")));
ProvidersHelper.InstantiateProviders(section.TextProviders, TextProviderCollection,
typeof (VerificationCodeTextProvider));
textProvider = TextProviderCollection[section.DefaultTextProvider];
}
}
/// <summary>
/// 生成图像
/// </summary>
/// <param name="size"></param>
/// <param name="textProvider"></param>
/// <param name="characterSet"></param>
/// <param name="maximumCharacters"></param>
/// <param name="minimumCharacters"></param>
/// <returns></returns>
public override VerificationCodeImage GenerateRandomAutoInputProtectionImage(Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
{
return GenerateAutoInputProtectionImage(null, size, textProvider, characterSet, maximumCharacters, minimumCharacters);
}
/// <summary>
/// Creates an instance of <see cref="PartitionedAutoInputProtectionImage"/> for the specified <paramref name="size"/>
/// and <paramref name="textProvider"/>.
/// </summary>
/// <remarks>
/// Derived types can override this method to return a type that either composites or derives from
/// <see cref="PartitionedAutoInputProtectionImage"/>.
/// </remarks>
/// <seealso cref="GenerateRandomAutoInputProtectionImage(Size,AutoInputProtectionTextProvider)"/>
/// <param name="size">The dimensions of the image.</param>
/// <param name="textProvider">The <see cref="AutoInputProtectionTextProvider"/> implementation that generates the text to be rendered.</param>
/// <returns>An instance of <see cref="PartitionedAutoInputProtectionImage"/> for the specified <paramref name="size"/>
/// and <paramref name="textProvider"/>.</returns>
protected virtual PartitionedVerificationCodeImage GenerateImage(Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
{
PartitionedVerificationCodeImage image = new PartitionedVerificationCodeImage(size, textProvider, characterSet, maximumCharacters, minimumCharacters);
if (margin != -1)
image.Margin = margin;
if (minRotation != -1)
image.MinimumCharacterRotation = minRotation;
if (maxRotation != -1)
image.MaximumCharacterRotation = maxRotation;
return image;
}
/// <summary> /// When implemented by a derived type, creates an instance of a type that derives from <see cref="AutoInputProtectionImage"/> /// that generates an image of the specified <paramref name="size"/> using the specified <paramref name="textProvider"/>. /// </summary> /// <remarks> /// <para> /// This overload is used by the <see cref="AutoInputProtectionControl"/> control. /// </para> /// <para> /// A derived type can call <see cref="GenerateImage(Size,AutoInputProtectionTextProvider)"/> to create an instance of /// <see cref="PartitionedAutoInputProtectionImage"/>, which can then be returned to the caller immediately or it can be wrapped by a specialied class that /// is returned instead. Alternatively, a derived type may override <see cref="GenerateImage(Size,AutoInputProtectionTextProvider)"/> to create a custom /// implementation that is then returned by this method as is. /// </para> /// </remarks> /// <seealso cref="AutoInputProtection.GenerateAutoInputProtectionImage"/> /// <seealso cref="GenerateAutoInputProtectionImage"/> /// <param name="size">The dimensions of the image.</param> /// <param name="textProvider"><see cref="AutoInputProtectionTextProvider"/> implementation to be used by the <see cref="AutoInputProtectionImage"/> implementation that is created.</param> /// <returns>An <see cref="AutoInputProtectionImage"/> implementation that can generate an image of the specified <paramref name="size"/> using the specified /// <paramref name="textProvider"/>.</returns> public abstract override VerificationCodeImage GenerateRandomAutoInputProtectionImage(Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters);
public LineNoiseVerificationCodeImage(Size size, VerificationCodeTextProvider textProvider, CaptchaCharacterSet characterSet, int? maximumCharacters, int? minimumCharacters)
: base(size, textProvider, characterSet, maximumCharacters, minimumCharacters)
{
colors = new List<Color>(1);
colors.Add(Color.Black);
}
/// <summary>
/// 加载TextProvider
/// </summary>
/// <param name="configHasSection"></param>
/// <param name="section"></param>
private static void InitializeTextProviders(bool configHasSection, VerificationCodeSection section)
{
//加载TextProvider 如果webconfig中没有配置 则加载默认的BasicEnglishAutoInputProtectionTextProvider
if (configHasSection)
{
if (!initializedTextProviders)
{
ProvidersHelper.InstantiateProviders(section.TextProviders, textProviders, typeof(VerificationCodeTextProvider));
initializedTextProviders = true;
}
if (section.DefaultTextProvider.Equals(section.ElementInformation.Properties["defaultTextProvider"].DefaultValue))
{
if (textProviders.Count > 0)
textProvider = textProviders[0];
else
textProvider = new BasicEnglishVerificationCodeTextProvider(
new[] { Color.Black, Color.Red, Color.Brown },
new[] { new Font("Times New Roman", 1), new Font("Arial", 1), new Font("Microsoft Sans Serif", 1) });
}
else
textProvider = textProviders[section.DefaultTextProvider];
if (textProvider == null)
throw new InvalidOperationException("Errors.Config_Missing_TextProvider");
}
else if (textProvider == null)
{
section.TextProviders.Add(CreateProviderSettings(section.DefaultTextProvider, typeof(BasicEnglishVerificationCodeTextProvider),
new KeyValuePair<string, string>("colors", "Red,Green,Blue,Brown"),
new KeyValuePair<string, string>("fonts", "Times New Roman, Arial, Microsoft Sans Serif")));
ProvidersHelper.InstantiateProviders(section.TextProviders, textProviders, typeof(VerificationCodeTextProvider));
textProvider = textProviders[section.DefaultTextProvider];
}
}