Adding error handling

Former-commit-id: 00bf32d7ac2150de3b2541266625743d0f18ecb3

src/ImageProcessor/Core/Common/Extensions/ImageExtensions.cs

@@ -14,7 +14,6 @@ namespace ImageProcessor.Core.Common.Extensions
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
-
     using ImageProcessor.Imaging;
 
     /// <summary>

src/ImageProcessor/ImageFactory.cs

@@ -144,9 +144,6 @@ namespace ImageProcessor
                 throw new ImageFormatException("Input stream is not a supported format.");
             }
 
-            this.backupFormat = format;
-            this.CurrentImageFormat = format;
-
             // Set our image as the memory stream value.
             this.Image = format.Load(memoryStream);
 
@@ -156,6 +153,8 @@ namespace ImageProcessor
             // Set the other properties.
             format.Quality = DefaultQuality;
             format.IsIndexed = ImageUtils.IsIndexed(this.Image);
+            this.backupFormat = format;
+            this.CurrentImageFormat = format;
 
             // Always load the data.
             foreach (PropertyItem propertyItem in this.Image.PropertyItems)
@@ -192,9 +191,6 @@ namespace ImageProcessor
                         throw new ImageFormatException("Input stream is not a supported format.");
                     }
 
-                    this.backupFormat = format;
-                    this.CurrentImageFormat = format;
-
                     MemoryStream memoryStream = new MemoryStream();
 
                     // Copy the stream.
@@ -212,6 +208,8 @@ namespace ImageProcessor
                     // Set the other properties.
                     format.Quality = DefaultQuality;
                     format.IsIndexed = ImageUtils.IsIndexed(this.Image);
+                    this.backupFormat = format;
+                    this.CurrentImageFormat = format;
 
                     // Always load the data.
                     foreach (PropertyItem propertyItem in this.Image.PropertyItems)

src/ImageProcessor/Imaging/Formats/FormatBase.cs

@@ -14,13 +14,20 @@ namespace ImageProcessor.Imaging.Formats
     using System.Drawing;
     using System.Drawing.Imaging;
     using System.IO;
-    using System.Linq;
 
     /// <summary>
     /// The supported format base. Implement this class when building a supported format.
     /// </summary>
     public abstract class FormatBase : ISupportedImageFormat
     {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FormatBase"/> class.
+        /// </summary>
+        protected FormatBase()
+        {
+            this.Quality = 90;
+        }
+
         /// <summary>
         /// Gets the file headers.
         /// </summary>
@@ -57,11 +64,6 @@ namespace ImageProcessor.Imaging.Formats
         /// </summary>
         public bool IsIndexed { get; set; }
 
-        /// <summary>
-        /// Gets or sets a value indicating whether the image format is animated.
-        /// </summary>
-        public bool IsAnimated { get; set; }
-
         /// <summary>
         /// Gets or sets the quality of output for images.
         /// </summary>
@@ -137,7 +139,7 @@ namespace ImageProcessor.Imaging.Formats
                 return false;
             }
 
-            return this.MimeType.Equals(format.MimeType);
+            return this.MimeType.Equals(format.MimeType) && this.IsIndexed.Equals(format.IsIndexed);
         }
 
         /// <summary>

src/ImageProcessor/Imaging/Formats/GifFormat.cs

@@ -113,10 +113,7 @@ namespace ImageProcessor.Imaging.Formats
         /// </returns>
         public override Image Save(Stream stream, Image image)
         {
-            // TODO: Move this in here. It doesn't need to be anywhere else.
-            ImageInfo imageInfo = image.GetImageInfo(this.ImageFormat, false);
-
-            if (!imageInfo.IsAnimated)
+            if (!ImageAnimator.CanAnimate(image))
             {
                 image = new OctreeQuantizer(255, 8).Quantize(image);
             }
@@ -135,10 +132,7 @@ namespace ImageProcessor.Imaging.Formats
         /// </returns>
         public override Image Save(string path, Image image)
         {
-            // TODO: Move this in here. It doesn't need to be anywhere else.
-            ImageInfo imageInfo = image.GetImageInfo(this.ImageFormat, false);
-
-            if (!imageInfo.IsAnimated)
+            if (!ImageAnimator.CanAnimate(image))
             {
                 image = new OctreeQuantizer(255, 8).Quantize(image);
             }

src/ImageProcessor/Imaging/Formats/ISupportedImageFormat.cs

@@ -50,11 +50,6 @@ namespace ImageProcessor.Imaging.Formats
         /// </summary>
         bool IsIndexed { get; set; }
 
-        /// <summary>
-        /// Gets or sets a value indicating whether the image format is animated.
-        /// </summary>
-        bool IsAnimated { get; set; }
-
         /// <summary>
         /// Gets or sets the quality of output for images.
         /// </summary>

src/ImageProcessor/Imaging/Formats/JpegFormat.cs

@@ -22,14 +22,6 @@ namespace ImageProcessor.Imaging.Formats
     /// </summary>
     public sealed class JpegFormat : FormatBase
     {
-        /// <summary>
-        /// Initializes a new instance of the <see cref="JpegFormat"/> class.
-        /// </summary>
-        public JpegFormat()
-        {
-            this.Quality = 90;
-        }
-
         /// <summary>
         /// Gets the file headers.
         /// </summary>

src/ImageProcessor/Processors/Alpha.cs

@@ -10,10 +10,13 @@
 
 namespace ImageProcessor.Processors
 {
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
 
+    using ImageProcessor.Core.Common.Exceptions;
+
     /// <summary>
     /// Encapsulates methods to change the alpha component of the image to effect its transparency.
     /// </summary>
@@ -76,14 +79,26 @@ namespace ImageProcessor.Processors
                     {
                         imageAttributes.SetColorMatrix(colorMatrix);
 
-                        graphics.DrawImage(image, new Rectangle(0, 0, image.Width, image.Height), 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, imageAttributes);
+                        graphics.DrawImage(
+                            image,
+                            new Rectangle(0, 0, image.Width, image.Height),
+                            0,
+                            0,
+                            image.Width,
+                            image.Height,
+                            GraphicsUnit.Pixel,
+                            imageAttributes);
 
                         image.Dispose();
                         image = newImage;
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Brightness.cs

@@ -10,10 +10,13 @@
 
 namespace ImageProcessor.Processors
 {
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
 
+    using ImageProcessor.Core.Common.Exceptions;
+
     /// <summary>
     /// Encapsulates methods to change the brightness component of the image.
     /// </summary>
@@ -96,7 +99,11 @@ namespace ImageProcessor.Processors
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Contrast.cs

@@ -10,10 +10,13 @@
 
 namespace ImageProcessor.Processors
 {
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
 
+    using ImageProcessor.Core.Common.Exceptions;
+
     /// <summary>
     /// Encapsulates methods to change the contrast component of the image.
     /// </summary>
@@ -93,7 +96,11 @@ namespace ImageProcessor.Processors
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Crop.cs

@@ -11,10 +11,14 @@
 namespace ImageProcessor.Processors
 {
     #region Using
+
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Drawing2D;
     using System.Drawing.Imaging;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging;
     #endregion
 
@@ -132,7 +136,11 @@ namespace ImageProcessor.Processors
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Filter.cs

@@ -11,9 +11,13 @@
 namespace ImageProcessor.Processors
 {
     #region Using
+
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging.Filters;
     #endregion
 
@@ -73,7 +77,11 @@ namespace ImageProcessor.Processors
                     return matrix.TransformImage(factory, image, newImage);
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Flip.cs

@@ -10,11 +10,11 @@
 
 namespace ImageProcessor.Processors
 {
-    #region Using
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
-    using System.Text.RegularExpressions;
-    #endregion
+
+    using ImageProcessor.Core.Common.Exceptions;
 
     /// <summary>
     /// Flips an image horizontally or vertically.
@@ -74,7 +74,11 @@ namespace ImageProcessor.Processors
                 image.Dispose();
                 image = newImage;
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Format.cs

@@ -10,11 +10,9 @@
 
 namespace ImageProcessor.Processors
 {
-    #region Using
     using System.Collections.Generic;
     using System.Drawing;
     using ImageProcessor.Imaging.Formats;
-    #endregion
 
     /// <summary>
     /// Sets the output of the image to a specific format.

src/ImageProcessor/Processors/GaussianBlur.cs

@@ -10,8 +10,11 @@
 
 namespace ImageProcessor.Processors
 {
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging;
 
     /// <summary>
@@ -62,7 +65,11 @@ namespace ImageProcessor.Processors
                 image.Dispose();
                 image = newImage;
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/GaussianSharpen.cs

@@ -10,8 +10,11 @@
 
 namespace ImageProcessor.Processors
 {
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging;
 
     /// <summary>
@@ -62,7 +65,11 @@ namespace ImageProcessor.Processors
                 image.Dispose();
                 image = newImage;
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Resize.cs

@@ -17,6 +17,8 @@ namespace ImageProcessor.Processors
     using System.Drawing.Imaging;
     using System.Globalization;
     using System.Linq;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging;
 
     /// <summary>
@@ -359,7 +361,11 @@ namespace ImageProcessor.Processors
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Rotate.cs

@@ -15,6 +15,8 @@ namespace ImageProcessor.Processors
     using System.Drawing;
     using System.Drawing.Drawing2D;
 
+    using ImageProcessor.Core.Common.Exceptions;
+
     /// <summary>
     /// Encapsulates methods to rotate an image.
     /// </summary>
@@ -75,7 +77,11 @@ namespace ImageProcessor.Processors
                 image.Dispose();
                 image = newImage;
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/RoundedCorners.cs

@@ -11,9 +11,13 @@
 namespace ImageProcessor.Processors
 {
     #region Using
+
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Drawing2D;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging;
     #endregion
 
@@ -79,7 +83,11 @@ namespace ImageProcessor.Processors
                 image.Dispose();
                 image = newImage;
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {
@@ -177,6 +185,5 @@ namespace ImageProcessor.Processors
 
             return newImage;
         }
-
     }
 }

src/ImageProcessor/Processors/Saturation.cs

@@ -11,9 +11,14 @@
 namespace ImageProcessor.Processors
 {
     #region Using
+
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Imaging;
+
+    using ImageProcessor.Core.Common.Exceptions;
+
     #endregion
 
     /// <summary>
@@ -126,7 +131,11 @@ namespace ImageProcessor.Processors
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Tint.cs

@@ -10,11 +10,14 @@
 
 namespace ImageProcessor.Processors
 {
+    using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Drawing2D;
     using System.Drawing.Imaging;
 
+    using ImageProcessor.Core.Common.Exceptions;
+
     /// <summary>
     /// Tints an image with the given color.
     /// </summary>
@@ -86,7 +89,11 @@ namespace ImageProcessor.Processors
 
                 return image;
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Vignette.cs

@@ -10,13 +10,12 @@
 
 namespace ImageProcessor.Processors
 {
-    #region Using
     using System;
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Drawing2D;
-    using System.Text.RegularExpressions;
-    #endregion
+
+    using ImageProcessor.Core.Common.Exceptions;
 
     /// <summary>
     /// Encapsulates methods with which to add a vignette image effect to an image.
@@ -117,7 +116,11 @@ namespace ImageProcessor.Processors
                     }
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {

src/ImageProcessor/Processors/Watermark.cs

@@ -14,6 +14,8 @@ namespace ImageProcessor.Processors
     using System.Collections.Generic;
     using System.Drawing;
     using System.Drawing.Text;
+
+    using ImageProcessor.Core.Common.Exceptions;
     using ImageProcessor.Imaging;
 
     /// <summary>
@@ -130,7 +132,11 @@ namespace ImageProcessor.Processors
                     image = newImage;
                 }
             }
-            catch
+            catch (Exception ex)
+            {
+                throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
+            }
+            finally
             {
                 if (newImage != null)
                 {