[sane-devel] Changes of xSane clone for review: Preview window redesigned + small changes

[Ralph Little]

Hi Maxim!

On 2020-05-03 8:56 a.m., Maxim Ushakov wrote:
>
> Hello everybody!
>
> Some time ago I tried to scan a big archive of old camera rolls with 
> xSane and found problems:
>
>  1. Its 'scan area selection' was wrong, it got a shift if the Preview
>     was zoomed in.
>  2. 'Zoom to point' and 'Zoom out' worked in a weird manner, it lost
>     the center point.
>  3. The image was tied to the top-left corner that is pretty unusual
>     nowadays.
>  4. Zoom did not react to the size of window.
>
> It would make scanning frustrating, so I decided to make a custom 
> version of xSane.
>
> Major changes, Preview window:
>
> * xsane-preview.h/c : geometry calculations of Preview window revised, 
> clarified and simplified.
> * Preview image reacts on the window size: the same part of image is 
> visible after resizing.
> * 'Fit to screen' stated as a separate mode that allows to see the 
> entire image regardless of the window size.
> * Zoom In/Zoom Out work as it supposed to do.
>
Hah, yes! I also find the preview window zoom options annoying and I had 
some plans to look at this.
I will certainly look at your changes!
I also intend to add mouse scrolling for zoom which is pretty standard 
fare these days.
>
> Minor changes:
>
> * aclocal.m4 removed, it is a generated file.
> * configure, configure.in fixed, it could not detect SANE installed.
>
This change is in progress. Yes, configure etc should be generated.

> * New button 'Half frame for 135 type camera roll' added, it creates a 
> selection bix of the mentioned size that can be dragged to shots on 
> the camera roll.
> * New xsane_list_all_scanner_parameters() function in xSane that dumps 
> everything found in the results of sane_control_option().
>
> I am not sure if my changes to configure files are good enough, but 
> the original files did not work at all.
>
>
No worries! Patches and enhancements always welcome.

Cheers,
Ralph
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