/// <summary>
/// Adds text watermark to a WebImage.
/// </summary>
/// <param name="text">Text to use as a watermark.</param>
/// <param name="fontColor">Watermark color. Can be specified as a string (e.g. "White") or as a hex value (e.g. "#00FF00").</param>
/// <param name="fontSize">Font size in points.</param>
/// <param name="fontStyle">Font style: bold, italics, etc.</param>
/// <param name="fontFamily">Font family name: e.g. Microsoft Sans Serif</param>
/// <param name="horizontalAlign">Horizontal alignment for watermark text. Can be "right", "left", or "center".</param>
/// <param name="verticalAlign">Vertical alignment for watermark text. Can be "top", "bottom", or "middle".</param>
/// <param name="opacity">Watermark text opacity. Should be between 0 and 100.</param>
/// <param name="padding">Size of padding around watermark text in pixels.</param>
/// <returns>Modified WebImage instance with added watermark.</returns>
public WebImage AddTextWatermark(
string text,
string fontColor = "Black",
int fontSize = 12,
string fontStyle = "Regular",
string fontFamily = "Microsoft Sans Serif",
string horizontalAlign = "Right",
string verticalAlign = "Bottom",
int opacity = 100,
int padding = 5)
{
if (String.IsNullOrEmpty(text))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "text");
}
Color color;
if (!ConversionUtil.TryFromStringToColor(fontColor, out color))
{
throw new ArgumentException(HelpersResources.WebImage_IncorrectColorName);
}
if ((opacity < 0) || (opacity > 100))
{
throw new ArgumentOutOfRangeException("opacity", String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_Between, 0, 100));
}
int alpha = 255 * opacity / 100;
color = Color.FromArgb(alpha, color);
if (fontSize <= 0)
{
throw new ArgumentOutOfRangeException(
"fontSize",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThan, 0));
}
FontStyle fontStyleEnum;
if (!ConversionUtil.TryFromStringToEnum(fontStyle, out fontStyleEnum))
{
throw new ArgumentException(HelpersResources.WebImage_IncorrectFontStyle);
}
FontFamily fontFamilyClass;
if (!ConversionUtil.TryFromStringToFontFamily(fontFamily, out fontFamilyClass))
{
throw new ArgumentException(HelpersResources.WebImage_IncorrectFontFamily);
}
HorizontalAlign horizontalAlignEnum = ParseHorizontalAlign(horizontalAlign);
VerticalAlign verticalAlignEnum = ParseVerticalAlign(verticalAlign);
if (padding < 0)
{
throw new ArgumentOutOfRangeException(
"padding",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
WatermarkTextTransformation transformation =
new WatermarkTextTransformation(text, color, fontSize, fontStyleEnum, fontFamilyClass, horizontalAlignEnum, verticalAlignEnum, padding);
_transformations.Add(transformation);
return(this);
}
/// <summary>
/// Adds text watermark to a WebImage.
/// </summary>
/// <param name="text">Text to use as a watermark.</param>
/// <param name="fontColor">Watermark color. Can be specified as a string (e.g. "White") or as a hex value (e.g. "#00FF00").</param>
/// <param name="fontSize">Font size in points.</param>
/// <param name="fontStyle">Font style: bold, italics, etc.</param>
/// <param name="fontFamily">Font family name: e.g. Microsoft Sans Serif</param>
/// <param name="horizontalAlign">Horizontal alignment for watermark text. Can be "right", "left", or "center".</param>
/// <param name="verticalAlign">Vertical alignment for watermark text. Can be "top", "bottom", or "middle".</param>
/// <param name="opacity">Watermark text opacity. Should be between 0 and 100.</param>
/// <param name="padding">Size of padding around watermark text in pixels.</param>
/// <returns>Modified WebImage instance with added watermark.</returns>
public WebImage AddTextWatermark(
string text,
string fontColor = "Black",
int fontSize = 12,
string fontStyle = "Regular",
string fontFamily = "Microsoft Sans Serif",
string horizontalAlign = "Right",
string verticalAlign = "Bottom",
int opacity = 100,
int padding = 5) {
if (string.IsNullOrEmpty(text)) {
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "text");
}
Color color;
if (!ConversionUtil.TryFromStringToColor(fontColor, out color)) {
throw new ArgumentException(HelpersResources.WebImage_IncorrectColorName);
}
if ((opacity < 0) || (opacity > 100)) {
throw new ArgumentOutOfRangeException("opacity", String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_Between, 0, 100));
}
int alpha = 255 * opacity / 100;
color = Color.FromArgb(alpha, color);
if (fontSize <= 0) {
throw new ArgumentOutOfRangeException(
"fontSize",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThan, 0));
}
FontStyle fontStyleEnum;
if (!ConversionUtil.TryFromStringToEnum(fontStyle, out fontStyleEnum)) {
throw new ArgumentException(HelpersResources.WebImage_IncorrectFontStyle);
}
FontFamily fontFamilyClass;
if (!ConversionUtil.TryFromStringToFontFamily(fontFamily, out fontFamilyClass)) {
throw new ArgumentException(HelpersResources.WebImage_IncorrectFontFamily);
}
HorizontalAlign horizontalAlignEnum = ParseHorizontalAlign(horizontalAlign);
VerticalAlign verticalAlignEnum = ParseVerticalAlign(verticalAlign);
if (padding < 0) {
throw new ArgumentOutOfRangeException(
"padding",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
WatermarkTextTransformation transformation =
new WatermarkTextTransformation(text, color, fontSize, fontStyleEnum, fontFamilyClass, horizontalAlignEnum, verticalAlignEnum, padding);
_transformations.Add(transformation);
return this;
}
