rohithkrajan / imagelibrary Goto Github PK

What steps will reproduce the problem?
1. instantiate KalikoImage by passing TIFF file name

What is the expected output? What do you see instead?
Expected: image is instantiated properly
Actual: OutOfMemoryException is thrown


What version of the product are you using? On what operating system?
1.2.4.0 (Win7)

Please provide any additional information below.

This happens for some TIFF images (especially when they are about 1500x1500). 
What we have noticed it is related to some kind of unsupported format of image.

There is also a workaround for it. If conversion used in MakeImageNonIndexed() 
method is always executed, file is loaded properly:
private void MakeImageNonIndexed()
{
  //if(IndexedPalette)
    _image = new Bitmap(new Bitmap(_image));            
}

You can contact me at wojciech.kotlarski at 7digital.com in order to get 
example tiff file that is causing problems (I cannot upload this image with 
this ticket, as it should not be publicly available)

Add methods for detecting if the given image is in portrait or in landscape mode

It is very important that using Bitmap object a freed from memory after use. 
This can be done using KalikoImage.Destroy()

However, it would be great if KalikoImage implemented IDisposable, so we can 
write using statements:

Using Image As New Kaliko.ImageLibrary.KalikoImage()

End Using

When resizing an image using the GetThumbnailImage function, a noticeable top 
and left border is created (1px). The following example shows this:

http://3.bp.blogspot.com/_5H9FP3xjceY/SyadiyzvMBI/AAAAAAAAAAc/EttNRWC3Byo/s320/t
humbnail-fit.jpg

Ps. Great library, very easy to use!

I would much appreciate support for the dds file format.

The issue: When you have an landscape image and you want to have a 
portrait thumbnail now your library will crop the image, and the same for 
portrait image and landscape thumbnail.

The fix:
In the class Kaliko.ImageLibrary.KalikoImage method 
public KalikoImage GetThumbnailImage(int width, int height, 
ThumbnailMethod method) the padding part:

else if(method == ThumbnailMethod.Pad) {
float hRatio = (float)_image.Height / (float)height;
float wRatio = (float)_image.Width / (float)width;
float newRatio = hRatio > wRatio ? hRatio : wRatio;
int imgHeight = (int)(_image.Height / newRatio);
int imgWidth = (int)(_image.Width / newRatio);

image = new KalikoImage(width, height, _backgroundColor);
Graphics g = Graphics.FromImage(image._image);
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.DrawImage(_image, (width - imgWidth) / 2, (height - imgHeight) / 2, 
imgWidth, imgHeight);
}

What steps will reproduce the problem?
1.The problem is a transparence, why the install the cs for apply format 
PixelFormat.Format24bppRgb


What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?

Kaliko.ImageLibrary.dll, v1.2.1.1

Please provide any additional information below.

What steps will reproduce the problem?

If you start with a PNG that has a transparent background and run it through 
GetThumbnailImage the transparent sections will be changed to black. If I alter 
the background color, I can change that to another color, but not transparent.

What is the expected output? What do you see instead?

It would be ideal if transparency could be preserved. However, this would 
require a different PixelFormat be used than the hardcoded value in the library 
(Format24bppRgb).

What version of the product are you using? On what operating system?

1.2.4

Please provide any additional information below.

I have had success by adding a PixelFormat property that can be set by a 
constructor. Then I use that PixelFormat for the creation of the Thumbnail. 
However, the issue I run into is that if I set the PixelFormat to 
Format32bppArgb or Format32bppPrgb the transparency is preserved, but the 
Gaussian or Unsharpmask filters no longer work (they create blank images).

Attached is the KalikoImage.cs library that allows the user to set the 
PixelFormat. I would be very grateful if there were a way to get the filters to 
perform with the Format32bppArgb pixelformat.

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?
I see a System.Drawing.Image and files but no BitmapImage or Image object.

What version of the product are you using? On what operating system?
1.2.1

Please provide any additional information below.
Kaliko seems cool and easy enough for my purpuses. But what I totally miss is 
an option to use the processed images further in the code. Rarely developpers 
only read-process-writetodisk pics, we need to display it!
How can I put a KalikoImage object into a?:
+ System.Windows.Controls.Image (preferably)
+ System.Windows.Media.BitmapImage

Example code:

KalikoImage img = new KalikoImage(new MemoryStream(imgBytes));

img.BlitFill(@"C:\watermark.png");

MemoryStream ms = new MemoryStream();
img.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
return ms.ToArray();

What is the expected output? What do you see instead?
Image should have the BlitFill image overlaid. Saving the KalikoImage.Image to 
a bytearray does not have the image overlaid.

What version of the product are you using? On what operating system?
1.2.4

Add methods for scaling images by:

1) new width / height

    image.Scale(200, 100);

2) percent

   image.Scale(1.25);

When using GetThumbnailImage with Crop, certain images get black borders when 
the original image is white.

This can be solved by using the "new KalikoImage(w,h,_backgroundColor)"
just as in the "Pad" case.

SavePng accepts a quality parameter which is discarded by the encoder. 

Plz add API docs ;o)