the size of save files in too big

resilux · Post by **resilux** » Thu Apr 10, 2014 3:04 pm

Hi again Sergey

I have another issue. I have small document with some pictures in it, not too big. between 40kb and 100 kb each one. When I save this document to rvf file, the filesize is 3249 kb. If I copy the document content and I paste it in Word, and then Isave this file, the file size is 365 kb, which is normal according with the size of the pictures stored.

What can be wrong?

if you want I can send you the generate rvf file.

Regards

Jesus

Post by **Sergey Tkachenko** » Sat Apr 12, 2014 10:15 am

Try calling

Code: Select all

SRV.RichViewEdit.DeleteUnusedStyles(True, True, True);
SRV.RVHeader.DeleteUnusedStyles(True, True, True);
SRV.RVFooter.DeleteUnusedStyles(True, True, True);

before saving.
If it does not help, send a sample rtf to me to richviewgmailcom.

resilux · Post by **resilux** » Mon Apr 14, 2014 8:22 am

Sergey, it did not work.

I have already sent to you an email with the generated files.

Thanks..

Post by **Sergey Tkachenko** » Mon Apr 14, 2014 2:21 pm

I received your files.

You have a jpeg picture, but in RVF and RTF it is stored as a metafile containing a bitmap. Of course, a bitmap size is greater than a jpeg size.

How could it happen?
For RTF, it may happen if you excluded rvrtfSaveJpegAsJpeg from SRV.RTFOptions.

For RVF, image formats are not converted, so jpeg cannot be converted to a metafile or any other format when saving RVF.
So I believe this RVF is created after loading RTF file containing a metafile.

resilux · Post by **resilux** » Mon Apr 14, 2014 2:37 pm

Hi Sergey

Thanks for answering. I store all documents in RTF format.

rvrtfSaveJpegAsJpeg was inlcuded in SRV.RTFOptions.

Any other clue why this is happening? Since I store the documents in database these ones becomes slower because of its size.

Please let me know...

Regards

Post by **Sergey Tkachenko** » Tue Apr 15, 2014 7:23 am

Another possibility of not saving Jpegs is Jpegs is using another class for Jpegs instead of TJpegImage.
Can you save RVF file immediately after inserting Jpeg?

resilux · Post by **resilux** » Tue Apr 15, 2014 9:56 am

Hi Sergey

I do not use another class for Jpeg.

This is what I do, maybe this can helps you to find out what is happening.

1) I create a new empty document
2) Insert the image I sent to you 45 kb.
3) Export to RVF file then I get 49 kb. Good.
4) Instead of Export I sabe the document in RTF Format stored in a stream. using these lines of code.

SRichViewEdit1.RichViewEdit.Modified := False;
FDataStream.Clear;
FDataStream.Position := 0;
SRichViewEdit1.RichViewEdit.SaveRTFToStream( FDataStream,False );

5) Close the document, and I reopen it but this time loading its content from the stream.
6) I try to export the document in RVF Format and then I get a file wiht 243 kb, which is not good.

I think the problem is when I store the document in the stream. Can be?

Please let me know...

Regards

Jesus

Post by **Sergey Tkachenko** » Tue Apr 15, 2014 4:14 pm

Please send me the first RVF (49 kb).

resilux · Post by **resilux** » Wed Apr 16, 2014 6:26 am

Hi Sergey

I already sent to you by mail.

Regards

Post by **Sergey Tkachenko** » Wed Apr 16, 2014 9:04 am

I received it. As I expected, this jpeg was loaded not in TJPEGImage but in another class, TdxSmartImage.
TRichView knows nothing about TdxSmartImage, so it cannot save it to RTF as Jpeg.

Solution:
1) Compile your application without DXREGISTERPNGIMAGE define. If it is not defined, DevExpress code does not register TdxPNGImage for PNG, and TdxSmartImage for TIF GIF PNG JPG JPEG, so standard VCL classes will be used.

or

2) You can subclass TRVGraphicHandler to support DevExpress classes. I can explain how to do it, if you need.

resilux · Post by **resilux** » Wed Apr 16, 2014 9:13 am

Sergey

First of all, thanks a lot for your help

1) I have bough and installed Devpress Components, but I do use them in my application, so DXREGISTERPNGIMAGE is no defined. So I do not find any explanation why my application is using TdxSmartImage instead. This is something that I have to figure out.
2) About subclass TRVGraphicHandler to support DevExpress classes. Can you tell how to do it.

Once more, thanks

Regards

Jesus

resilux · Post by **resilux** » Wed Apr 16, 2014 9:42 am

Sergey

Another question about this. I have disabled for the moment the Dev components. So I did a test, and you were right. But this is fine for new documents, What can I do for already store documents?

I am afraid, nothing, isn´t it?

Regards

Post by **Sergey Tkachenko** » Wed Apr 16, 2014 10:26 am

RVGraphicHandler already supports TdxPngImage (if RVUSEDXPNGIMAGE is defined in RV_Defs.inc), so it makes sense to expand it for TdxSmartImage).
Also, I added a new method RVGraphicHandler.RegisterJpegGraphic allowing to change the default class for JPEGS (it will be used, for example, when loading RTF with jpegs).

It will be included in the next update.

PS: I reopened private forums for your account.

Post by **Sergey Tkachenko** » Wed Apr 16, 2014 10:31 am

In your existing documents, images are stored as metafiles.
You can convert all images in documents to jpegs ( http://www.trichview.com/forums/viewtopic.php?t=761 - example for C++Builder, I can convert it to Delphi, if you need).

However, JPEGs are good only for photos. If you have screenshots of schemes containing clear lines or text, converting them to JPEG will noticeable decrease quality.

resilux · Post by **resilux** » Wed Apr 16, 2014 11:00 am

Thanks a lot.

Please let me know when you release the update.

Regards