mirror of https://github.com/SixLabors/ImageSharp
Browse Source
Added the ability to generate watermarks and performed a general tidy up. Former-commit-id: 5eefd1d7abc816eaacca7e02f551706adda10ecdpull/17/head
JimBobSquarePants
14 years ago
15 changed files with 1074 additions and 288 deletions
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// -----------------------------------------------------------------------
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// <copyright file="PaletteQuantizer.cs" company="James South">
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// TODO: Update copyright text.
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// </copyright>
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// -----------------------------------------------------------------------
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namespace ImageProcessor.Imaging |
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{ |
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using System; |
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using System.Collections; |
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using System.Collections.Generic; |
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using System.Drawing; |
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using System.Drawing.Imaging; |
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using System.Linq; |
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using System.Text; |
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/// <summary>
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/// Encapsulates methods to calculate the colour palette if an image.
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/// http://codebetter.com/brendantompkins/2007/06/14/gif-image-color-quantizer-now-with-safe-goodness/
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/// </summary>
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internal class PaletteQuantizer : Quantizer |
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{ |
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/// <summary>
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/// Initializes a new instance of the <see cref="PaletteQuantizer"/> class.
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/// </summary>
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/// <param name="palette">
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/// The color palette to quantize to
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/// </param>
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/// <remarks>
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/// Palette quantization only requires a single quantization step
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/// </remarks>
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public PaletteQuantizer(ArrayList palette) |
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: base(true) |
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{ |
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_colorMap = new Hashtable(); |
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_colors = new Color[palette.Count]; |
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palette.CopyTo(_colors); |
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} |
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/// <summary>
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/// Override this to process the pixel in the second pass of the algorithm
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/// </summary>
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/// <param name="pixel">The pixel to quantize</param>
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/// <returns>The quantized value</returns>
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protected override byte QuantizePixel(Color32 pixel) |
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{ |
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byte colorIndex = 0; |
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int colorHash = pixel.ARGB; |
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// Check if the color is in the lookup table
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if (_colorMap.ContainsKey(colorHash)) |
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{ |
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colorIndex = (byte)_colorMap[colorHash]; |
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} |
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else |
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{ |
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// Not found - loop through the palette and find the nearest match.
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// Firstly check the alpha value - if 0, lookup the transparent color
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if (0 == pixel.Alpha) |
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{ |
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// Transparent. Lookup the first color with an alpha value of 0
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for (int index = 0; index < _colors.Length; index++) |
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{ |
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if (0 == _colors[index].A) |
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{ |
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colorIndex = (byte)index; |
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break; |
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} |
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} |
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} |
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else |
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{ |
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// Not transparent...
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int leastDistance = int.MaxValue; |
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int red = pixel.Red; |
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int green = pixel.Green; |
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int blue = pixel.Blue; |
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|
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// Loop through the entire palette, looking for the closest color match
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for (int index = 0; index < _colors.Length; index++) |
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{ |
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Color paletteColor = _colors[index]; |
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int redDistance = paletteColor.R - red; |
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int greenDistance = paletteColor.G - green; |
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int blueDistance = paletteColor.B - blue; |
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int distance = (redDistance * redDistance) + |
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(greenDistance * greenDistance) + |
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(blueDistance * blueDistance); |
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if (distance < leastDistance) |
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{ |
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colorIndex = (byte)index; |
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leastDistance = distance; |
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|
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// And if it's an exact match, exit the loop
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if (0 == distance) |
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{ |
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break; |
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} |
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} |
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} |
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} |
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|
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// Now I have the color, pop it into the hashtable for next time
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_colorMap.Add(colorHash, colorIndex); |
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} |
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return colorIndex; |
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} |
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/// <summary>
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/// Retrieve the palette for the quantized image
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/// </summary>
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/// <param name="palette">Any old palette, this is overrwritten</param>
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/// <returns>The new color palette</returns>
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protected override ColorPalette GetPalette(ColorPalette palette) |
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{ |
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for (int index = 0; index < _colors.Length; index++) |
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{ |
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palette.Entries[index] = _colors[index]; |
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} |
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return palette; |
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} |
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/// <summary>
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/// Lookup table for colors
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/// </summary>
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private Hashtable _colorMap; |
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/// <summary>
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/// List of all colors in the palette
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/// </summary>
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protected Color[] _colors; |
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} |
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} |
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@ -0,0 +1,113 @@ |
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// -----------------------------------------------------------------------
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// <copyright file="TextLayer.cs" company="James South">
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// TODO: Update copyright text.
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// </copyright>
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// -----------------------------------------------------------------------
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namespace ImageProcessor.Imaging |
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{ |
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#region Using
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using System; |
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using System.Drawing; |
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#endregion
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/// <summary>
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/// Enacapsulates the properties required to add a leyer of text to an image.
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/// </summary>
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public class TextLayer |
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{ |
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#region Fields
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/// <summary>
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/// The colour to render the text.
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/// </summary>
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private Color textColor = Color.Black; |
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/// <summary>
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/// The opacity at which to render the text.
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/// </summary>
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private int opacity = 100; |
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|
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/// <summary>
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/// The font style to render the text.
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/// </summary>
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private FontStyle fontStyle = FontStyle.Bold; |
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/// <summary>
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/// The font size to render the text.
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/// </summary>
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private int fontSize = 48; |
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/// <summary>
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/// The position to start creating the text from.
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/// </summary>
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private Point position = Point.Empty; |
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#endregion
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#region Properties
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/// <summary>
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/// Gets or sets Text.
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/// </summary>
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public string Text { get; set; } |
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/// <summary>
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/// Gets or sets TextColor.
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/// </summary>
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public Color TextColor |
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{ |
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get { return this.textColor; } |
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set { this.textColor = value; } |
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} |
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/// <summary>
|
|||
/// Gets or sets the name of the font.
|
|||
/// </summary>
|
|||
public string Font { get; set; } |
|||
|
|||
/// <summary>
|
|||
/// Gets or sets the size of the font in pixels.
|
|||
/// </summary>
|
|||
public int FontSize |
|||
{ |
|||
get { return this.fontSize; } |
|||
set { this.fontSize = value; } |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Gets or sets the FontStyle.
|
|||
/// </summary>
|
|||
public FontStyle Style |
|||
{ |
|||
get { return this.fontStyle; } |
|||
set { this.fontStyle = value; } |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Gets or sets the Opacity.
|
|||
/// </summary>
|
|||
public int Opacity |
|||
{ |
|||
get |
|||
{ |
|||
int alpha = (int)Math.Ceiling((this.opacity / 100d) * 255); |
|||
|
|||
return alpha < 255 ? alpha : 255; |
|||
} |
|||
|
|||
set |
|||
{ |
|||
this.opacity = value; |
|||
} |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Gets or sets Position.
|
|||
/// </summary>
|
|||
public Point Position |
|||
{ |
|||
get { return this.position; } |
|||
set { this.position = value; } |
|||
} |
|||
#endregion
|
|||
} |
|||
} |
|||
@ -0,0 +1,332 @@ |
|||
// -----------------------------------------------------------------------
|
|||
// <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
|
|||
} |
|||
} |
|||
@ -0,0 +1,444 @@ |
|||
// -----------------------------------------------------------------------
|
|||
// <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.Drawing.Text; |
|||
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.
|
|||
/// </summary>
|
|||
private static readonly Regex QueryRegex = new Regex(@"watermark=[^&]*", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the text attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex TextRegex = new Regex(@"text-[^/:?#\[\]@!$&'()*%\|,;=]+", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the position attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex PositionRegex = new Regex(@"position-\d+-\d+", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the color attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex ColorRegex = new Regex(@"color-([0-9a-fA-F]{3}){1,2}", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the fontsize attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex FontSizeRegex = new Regex(@"size-\d{1,3}", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the fontstyle attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex FontStyleRegex = new Regex(@"style-(bold|italic|regular|strikeout|underline)", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the font family attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex FontFamilyRegex = new Regex(@"font-[^/:?#\[\]@!$&'()*%\|,;=0-9]+", RegexOptions.Compiled); |
|||
|
|||
/// <summary>
|
|||
/// The regular expression to search strings for the opacity attribute.
|
|||
/// </summary>
|
|||
private static readonly Regex OpacityRegex = new Regex(@"opacity-\d{1,2}(?!\d)|opacity-100", 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(); |
|||
|
|||
string toParse = match.Value; |
|||
|
|||
textLayer.Text = this.ParseText(toParse); |
|||
textLayer.Position = this.ParsePosition(toParse); |
|||
textLayer.TextColor = this.ParseColor(toParse); |
|||
textLayer.FontSize = this.ParseFontSize(toParse); |
|||
textLayer.Font = this.ParseFontFamily(toParse); |
|||
textLayer.Style = this.ParseFontStyle(toParse); |
|||
textLayer.Opacity = this.ParseOpacity(toParse); |
|||
|
|||
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 |
|||
{ |
|||
// Dont use an object initializer here.
|
|||
newImage = new Bitmap(image); |
|||
newImage.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); |
|||
} |
|||
|
|||
// Set the hinting and draw the text.
|
|||
graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; |
|||
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) |
|||
{ |
|||
try |
|||
{ |
|||
using (FontFamily fontFamily = new FontFamily(font)) |
|||
{ |
|||
return new Font(fontFamily, fontSize, fontStyle, GraphicsUnit.Pixel); |
|||
} |
|||
} |
|||
catch |
|||
{ |
|||
using (FontFamily fontFamily = FontFamily.GenericSansSerif) |
|||
{ |
|||
return new Font(fontFamily, fontSize, fontStyle, GraphicsUnit.Pixel); |
|||
} |
|||
} |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Returns the correct <see cref="T:System.String"/> for the given string.
|
|||
/// </summary>
|
|||
/// <param name="input">
|
|||
/// The input string containing the value to parse.
|
|||
/// </param>
|
|||
/// <returns>
|
|||
/// The correct <see cref="T:System.String"/> for the given string.
|
|||
/// </returns>
|
|||
private string ParseText(string input) |
|||
{ |
|||
foreach (Match match in TextRegex.Matches(input)) |
|||
{ |
|||
// split on text-
|
|||
return match.Value.Split('-')[1].Replace("+", " "); |
|||
} |
|||
|
|||
return string.Empty; |
|||
} |
|||
|
|||
/// <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 ParsePosition(string input) |
|||
{ |
|||
foreach (Match match in PositionRegex.Matches(input)) |
|||
{ |
|||
int[] position = match.Value.ToIntegerArray(); |
|||
|
|||
if (position != null) |
|||
{ |
|||
int x = position[0]; |
|||
int y = position[1]; |
|||
|
|||
return new Point(x, y); |
|||
} |
|||
} |
|||
|
|||
return Point.Empty; |
|||
} |
|||
|
|||
/// <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 ParseColor(string input) |
|||
{ |
|||
foreach (Match match in ColorRegex.Matches(input)) |
|||
{ |
|||
// split on color-hex
|
|||
return ColorTranslator.FromHtml("#" + match.Value.Split('-')[1]); |
|||
} |
|||
|
|||
return Color.Black; |
|||
} |
|||
|
|||
/// <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 ParseFontSize(string input) |
|||
{ |
|||
foreach (Match match in FontSizeRegex.Matches(input)) |
|||
{ |
|||
// split on size-value
|
|||
return int.Parse(match.Value.Split('-')[1]); |
|||
} |
|||
|
|||
// Matches the default number in TextLayer.
|
|||
return 48; |
|||
} |
|||
|
|||
/// <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 ParseFontStyle(string input) |
|||
{ |
|||
FontStyle fontStyle = FontStyle.Bold; |
|||
|
|||
foreach (Match match in FontStyleRegex.Matches(input)) |
|||
{ |
|||
// split on style-
|
|||
switch (match.Value.Split('-')[1]) |
|||
{ |
|||
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; |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Returns the correct <see cref="T:System.String"/> containing the font family for the given string.
|
|||
/// </summary>
|
|||
/// <param name="input">
|
|||
/// The input string containing the value to parse.
|
|||
/// </param>
|
|||
/// <returns>
|
|||
/// The correct <see cref="T:System.String"/> containing the font family for the given string.
|
|||
/// </returns>
|
|||
private string ParseFontFamily(string input) |
|||
{ |
|||
foreach (Match match in FontFamilyRegex.Matches(input)) |
|||
{ |
|||
// split on font-
|
|||
string font = match.Value.Split('-')[1].Replace("+", " "); |
|||
|
|||
return font; |
|||
} |
|||
|
|||
return string.Empty; |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Returns the correct <see cref="T:System.Int32"/> containing the opacity 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"/> containing the font family for the given string.
|
|||
/// </returns>
|
|||
private int ParseOpacity(string input) |
|||
{ |
|||
foreach (Match match in OpacityRegex.Matches(input)) |
|||
{ |
|||
// split on opacity-
|
|||
return int.Parse(match.Value.Split('-')[1]); |
|||
} |
|||
|
|||
// full opacity - matches the Textlayer default.
|
|||
return 100; |
|||
} |
|||
#endregion
|
|||
} |
|||
} |
|||
Loading…
Reference in new issue