Android Question Problem with my code: touchimageview and rsimageprocessing

[Sub7]

Hello!
i am tryng to understand why my image change his scale after processing it with rsimageprocessing lib, the image dimensions does not change after processing.

If i comment this part of the code the image stay exacly where it should be.

Dim ChangeColor As RSImageEffects
LoadImageFromGallery = ChangeColor.SepiaToning(LoadImageFromGallery,0,0,0,0)

But if i run this code the result is a small zoomed out image:

    Log(LoadImageFromGallery.Width& " " &LoadImageFromGallery.Height&"BEFORE")

    Dim ChangeColor As RSImageEffects
    LoadImageFromGallery = ChangeColor.SepiaToning(LoadImageFromGallery,0,0,0,0)

    Log(LoadImageFromGallery.Width& " " &LoadImageFromGallery.Height&"AFTER")
  
    SourceImageRect.Initialize(0, 0, LoadImageFromGallery.Width, LoadImageFromGallery.Height)
    TouchImageViewRect.Initialize(0, 0, TouchImageView1.Width, TouchImageView1.Height)
    TouchImageView1.ScaleSrcRectToDestRect(SourceImageRect, TouchImageViewRect, "CENTER")
  
    Log(LoadImageFromGallery.Width& " " &LoadImageFromGallery.Height&"POST")
    TouchImageView1.SetBitmap(LoadImageFromGallery)

What's wrong gurus?

 

[Sub7]

This appen with MESgraphix too so the problem is not what i use to process the image but another, which is dunno for me.

 

[sorex]

is the last line required?

TouchImageView1.SetBitmap(LoadImageFromGallery)

doesn't that reload the original picture again instead of putting the scaled one inthere?

 

[Sub7]

Hi,
I take a picture from the camera, save it to a temp folder for some reasons,
open the image and process, update the image on the touchimageview.
That's why i am reloading, but even if i create a new (Dim processedBMp AS Bitmap )file this happen.

 

[sorex]

maybe you should post your solution so that others know what to do if they have a simular issue.

 

[Sub7]

False alarm, the problem not solved and is in the last line of first block of code

Activity.AddView(TouchImageView1, 0, 0, Panel2.Width, Panel2.Height)
TouchImageViewRect.Initialize(0, 0, Panel2.Width, Panel2.Height)'Questo imposta l'area dove puoi spostare l'immagine
TouchImageView1.ScaleSrcRectToDestRect(SourceImageRect, TouchImageViewRect, "CENTER")
SourceImageRect.Initialize(0, 0, ???,???)

i need that to be the same size of a panel and zoomable in/out but if i try this:

SourceImageRect.Initialize(0, 0, panel2.width,panel2.height)

i get a small image if i process with rs, else i get everything working.

 

[Sub7]

This code work:

SourceImageRect.Initialize(0, 0, LoadImageFromGallery.Width, LoadImageFromGallery.Height)
    TouchImageViewRect.Initialize(0, 0, TouchImageView1.Width, TouchImageView1.Height)
    TouchImageView1.ScaleSrcRectToDestRect(SourceImageRect, TouchImageViewRect, "CENTER")
    TouchImageView1.SetBitmap(LoadImageFromGallery)

This code does not, (small image)

    SourceImageRect.Initialize(0, 0, LoadImageFromGallery.Width, LoadImageFromGallery.Height)
    TouchImageViewRect.Initialize(0, 0, TouchImageView1.Width, TouchImageView1.Height)
    TouchImageView1.ScaleSrcRectToDestRect(SourceImageRect, TouchImageViewRect, "CENTER")
    Dim ChangeColor As RSImageEffects
    Dim bitmap20 As Bitmap
    bitmap20 = ChangeColor.SepiaToning(LoadImageFromGallery,0,0,0,0)
    TouchImageView1.SetBitmap(bitmap20)

Really dont know, sad.

 

[thedesolatesoul]

Try to save bitmap20 to file and load it with LoadBitmap again.

 

[Sub7]

Try to save bitmap20 to file and load it with LoadBitmap again.

Fantastic, this work! which is the reason?

 

[thedesolatesoul]

Its magic

Here is the thread where I tried to understand this problem: http://www.b4x.com/android/forum/threads/bitmap-density-issue-imageview-vs-canvas.40822/#content

tl;dr LoadBitmap will set the bitmap density again, which RSImageEffects is not setting in the new bitmap.

 

[Sub7]

Thank you!