mirror of https://github.com/SixLabors/ImageSharp
James South
14 years ago
6 changed files with 5 additions and 339 deletions
@ -1,332 +0,0 @@ |
|||||
// -----------------------------------------------------------------------
|
|
||||
// <copyright file="Watermark.cs" company="James South">
|
|
||||
// TODO: Update copyright text.
|
|
||||
// </copyright>
|
|
||||
// -----------------------------------------------------------------------
|
|
||||
|
|
||||
namespace ImageProcessor.Processors |
|
||||
{ |
|
||||
#region Using
|
|
||||
using System.Collections.Generic; |
|
||||
using System.Drawing; |
|
||||
using System.Text.RegularExpressions; |
|
||||
using ImageProcessor.Helpers.Extensions; |
|
||||
using ImageProcessor.Imaging; |
|
||||
#endregion
|
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Encapsulates methods to change the alpha component of the image to effect its transparency.
|
|
||||
/// </summary>
|
|
||||
public class Watermark : IGraphicsProcessor |
|
||||
{ |
|
||||
/// <summary>
|
|
||||
/// The regular expression to search strings for.
|
|
||||
/// http://stackoverflow.com/questions/11263949/optimize-a-variable-regex
|
|
||||
/// </summary>
|
|
||||
private static readonly Regex QueryRegex = new Regex(@"watermark=(text-\w+\|position-\d+-\d+(\|color-([0-9a-fA-F]{3}){1,2}(\|size-\d+(\|style-(bold|italic|regular|strikeout|underline))?)?)?|\w+)", RegexOptions.Compiled); |
|
||||
|
|
||||
#region IGraphicsProcessor Members
|
|
||||
/// <summary>
|
|
||||
/// Gets the name.
|
|
||||
/// </summary>
|
|
||||
public string Name |
|
||||
{ |
|
||||
get |
|
||||
{ |
|
||||
return "Watermark"; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Gets the description.
|
|
||||
/// </summary>
|
|
||||
public string Description |
|
||||
{ |
|
||||
get |
|
||||
{ |
|
||||
return "Adds a watermark containing text to the image."; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Gets the regular expression to search strings for.
|
|
||||
/// </summary>
|
|
||||
public Regex RegexPattern |
|
||||
{ |
|
||||
get |
|
||||
{ |
|
||||
return QueryRegex; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Gets or sets DynamicParameter.
|
|
||||
/// </summary>
|
|
||||
public dynamic DynamicParameter |
|
||||
{ |
|
||||
get; |
|
||||
set; |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Gets the order in which this processor is to be used in a chain.
|
|
||||
/// </summary>
|
|
||||
public int SortOrder |
|
||||
{ |
|
||||
get; |
|
||||
private set; |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Gets or sets any additional settings required by the processor.
|
|
||||
/// </summary>
|
|
||||
public Dictionary<string, string> Settings |
|
||||
{ |
|
||||
get; |
|
||||
set; |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// The position in the original string where the first character of the captured substring was found.
|
|
||||
/// </summary>
|
|
||||
/// <param name="queryString">
|
|
||||
/// The query string to search.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The zero-based starting position in the original string where the captured substring was found.
|
|
||||
/// </returns>
|
|
||||
public int MatchRegexIndex(string queryString) |
|
||||
{ |
|
||||
int index = 0; |
|
||||
|
|
||||
// Set the sort order to max to allow filtering.
|
|
||||
this.SortOrder = int.MaxValue; |
|
||||
|
|
||||
foreach (Match match in this.RegexPattern.Matches(queryString)) |
|
||||
{ |
|
||||
if (match.Success) |
|
||||
{ |
|
||||
if (index == 0) |
|
||||
{ |
|
||||
// Set the index on the first instance only.
|
|
||||
this.SortOrder = match.Index; |
|
||||
|
|
||||
TextLayer textLayer = new TextLayer(); |
|
||||
|
|
||||
// Split the string up.
|
|
||||
string[] firstPass = match.Value.Split('=')[1].Split('|'); |
|
||||
|
|
||||
switch (firstPass.Length) |
|
||||
{ |
|
||||
case 1: |
|
||||
textLayer.Text = firstPass[0]; |
|
||||
break; |
|
||||
case 2: |
|
||||
textLayer.Text = firstPass[0]; |
|
||||
textLayer.Position = this.GetPosition(firstPass[1]); |
|
||||
break; |
|
||||
|
|
||||
case 3: |
|
||||
textLayer.Text = firstPass[0]; |
|
||||
textLayer.Position = this.GetPosition(firstPass[1]); |
|
||||
textLayer.TextColor = this.GetColor(firstPass[2]); |
|
||||
break; |
|
||||
|
|
||||
case 4: |
|
||||
textLayer.Text = firstPass[0]; |
|
||||
textLayer.Position = this.GetPosition(firstPass[1]); |
|
||||
textLayer.TextColor = this.GetColor(firstPass[2]); |
|
||||
textLayer.FontSize = this.GetFontSize(firstPass[3]); |
|
||||
break; |
|
||||
|
|
||||
case 5: |
|
||||
textLayer.Text = firstPass[0]; |
|
||||
textLayer.Position = this.GetPosition(firstPass[1]); |
|
||||
textLayer.TextColor = this.GetColor(firstPass[2]); |
|
||||
textLayer.FontSize = this.GetFontSize(firstPass[3]); |
|
||||
textLayer.Style = this.GetFontStyle(firstPass[4]); |
|
||||
break; |
|
||||
} |
|
||||
|
|
||||
this.DynamicParameter = textLayer; |
|
||||
} |
|
||||
|
|
||||
index += 1; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
return this.SortOrder; |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Processes the image.
|
|
||||
/// </summary>
|
|
||||
/// <param name="factory">
|
|
||||
/// The the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class containing
|
|
||||
/// the image to process.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The processed image from the current instance of the <see cref="T:ImageProcessor.ImageFactory"/> class.
|
|
||||
/// </returns>
|
|
||||
public Image ProcessImage(ImageFactory factory) |
|
||||
{ |
|
||||
Bitmap newImage = null; |
|
||||
Image image = factory.Image; |
|
||||
|
|
||||
try |
|
||||
{ |
|
||||
newImage = new Bitmap(image) { Tag = image.Tag }; |
|
||||
|
|
||||
TextLayer textLayer = this.DynamicParameter; |
|
||||
string text = textLayer.Text; |
|
||||
int opacity = textLayer.Opacity; |
|
||||
int fontSize = textLayer.FontSize; |
|
||||
FontStyle fontStyle = textLayer.Style; |
|
||||
|
|
||||
using (Graphics graphics = Graphics.FromImage(newImage)) |
|
||||
{ |
|
||||
using (Font font = this.GetFont(textLayer.Font, fontSize, fontStyle)) |
|
||||
{ |
|
||||
using (StringFormat drawFormat = new StringFormat()) |
|
||||
{ |
|
||||
using (Brush brush = new SolidBrush(Color.FromArgb(opacity, textLayer.TextColor))) |
|
||||
{ |
|
||||
Point origin = textLayer.Position; |
|
||||
|
|
||||
// We need to ensure that there is a position set for the watermark
|
|
||||
if (origin == Point.Empty) |
|
||||
{ |
|
||||
// Work out the size of the text.
|
|
||||
SizeF textSize = graphics.MeasureString(text, font, new SizeF(image.Width, image.Height), drawFormat); |
|
||||
|
|
||||
int x = (int)(image.Width - textSize.Width) / 2; |
|
||||
int y = (int)(image.Height - textSize.Height) / 2; |
|
||||
origin = new Point(x, y); |
|
||||
} |
|
||||
|
|
||||
graphics.DrawString(text, font, brush, origin, drawFormat); |
|
||||
} |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
image.Dispose(); |
|
||||
image = newImage; |
|
||||
} |
|
||||
} |
|
||||
catch |
|
||||
{ |
|
||||
if (newImage != null) |
|
||||
{ |
|
||||
newImage.Dispose(); |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
return image; |
|
||||
} |
|
||||
#endregion
|
|
||||
|
|
||||
#region Private Methods
|
|
||||
/// <summary>
|
|
||||
/// Returns the correct <see cref="T:System.Drawing.Font"/> for the given parameters
|
|
||||
/// </summary>
|
|
||||
/// <param name="font">
|
|
||||
/// The font.
|
|
||||
/// </param>
|
|
||||
/// <param name="fontSize">
|
|
||||
/// The font size.
|
|
||||
/// </param>
|
|
||||
/// <param name="fontStyle">
|
|
||||
/// The font style.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The correct <see cref="T:System.Drawing.Font"/>
|
|
||||
/// </returns>
|
|
||||
private Font GetFont(string font, int fontSize, FontStyle fontStyle) |
|
||||
{ |
|
||||
FontFamily fontFamily = string.IsNullOrEmpty(font) ? FontFamily.GenericSansSerif : new FontFamily(font); |
|
||||
|
|
||||
return new Font(fontFamily, fontSize, fontStyle, GraphicsUnit.Pixel); |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Returns the correct <see cref="T:System.Drawing.Point"/> for the given string.
|
|
||||
/// </summary>
|
|
||||
/// <param name="input">
|
|
||||
/// The input string containing the value to parse.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The correct <see cref="T:System.Drawing.Point"/>
|
|
||||
/// </returns>
|
|
||||
private Point GetPosition(string input) |
|
||||
{ |
|
||||
int[] position = input.ToIntegerArray(); |
|
||||
int x = position[0]; |
|
||||
int y = position[1]; |
|
||||
|
|
||||
return new Point(x, y); |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Returns the correct <see cref="T:System.Drawing.Color"/> for the given string.
|
|
||||
/// </summary>
|
|
||||
/// <param name="input">
|
|
||||
/// The input string containing the value to parse.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The correct <see cref="T:System.Drawing.Color"/>
|
|
||||
/// </returns>
|
|
||||
private Color GetColor(string input) |
|
||||
{ |
|
||||
// split on color-hex
|
|
||||
return ColorTranslator.FromHtml("#" + input.Split('-')[1]); |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Returns the correct <see cref="T:System.Int32"/> for the given string.
|
|
||||
/// </summary>
|
|
||||
/// <param name="input">
|
|
||||
/// The input string containing the value to parse.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The correct <see cref="T:System.Int32"/>
|
|
||||
/// </returns>
|
|
||||
private int GetFontSize(string input) |
|
||||
{ |
|
||||
// split on size-value
|
|
||||
return int.Parse(input.Split('-')[1]); |
|
||||
} |
|
||||
|
|
||||
/// <summary>
|
|
||||
/// Returns the correct <see cref="T:System.Drawing.FontStyle"/> for the given string.
|
|
||||
/// </summary>
|
|
||||
/// <param name="input">
|
|
||||
/// The string containing the respective fontstyle.
|
|
||||
/// </param>
|
|
||||
/// <returns>
|
|
||||
/// The correct <see cref="T:System.Drawing.FontStyle"/>
|
|
||||
/// </returns>
|
|
||||
private FontStyle GetFontStyle(string input) |
|
||||
{ |
|
||||
FontStyle fontStyle = FontStyle.Bold; |
|
||||
|
|
||||
switch (input.ToLowerInvariant()) |
|
||||
{ |
|
||||
case "italic": |
|
||||
fontStyle = FontStyle.Italic; |
|
||||
break; |
|
||||
case "regular": |
|
||||
fontStyle = FontStyle.Regular; |
|
||||
break; |
|
||||
case "strikeout": |
|
||||
fontStyle = FontStyle.Strikeout; |
|
||||
break; |
|
||||
case "underline": |
|
||||
fontStyle = FontStyle.Underline; |
|
||||
break; |
|
||||
} |
|
||||
|
|
||||
return fontStyle; |
|
||||
} |
|
||||
#endregion
|
|
||||
} |
|
||||
} |
|
||||
Binary file not shown.
Binary file not shown.
Loading…
Reference in new issue