[Enhancement] edit metadata - trim borders manually screen - display pixel dimensions of area selected for trim

[Dedi Jedi]

User clicks on Edit metadata for desired book then
clicks on Trim borders - Trim borders manually and
screen where he can manually select area which should be kept after trim is displayed

Solution: User selects area and pixel dimensions of selected area are be displayed - so that before user user can see if the trimmed cover will have required dimensions before he clicks OK (user won't have to iterate trimming to reach desired dimensions).
Advantage: Probably quicker implementation, easy to handle
Disadvantage: If user doesn't know the "ideal" side ratio for his e-book reader, it doesn't neccessarily bring value to the user.

Alternative solution: There are predefined area rations user can choose from (e.g. if by default the book covers on the list of books in user's e-book reader have ratio 1,6:1, user selects this and area selection with this ratio is displayed and user can modify the selection while the area ratio is persisted).
Advantage: User doesn't have to calculate the final pixel dimensions for ideal ratio for his e-book reader.
Disadvantage: To provide the value, the list of available ratios would need to reflect ratios for at least couple of e-book readers with biggest market share. (all readers might have the same ratio, but I'm not sure about it).

User value of feature: It is easier for a user to achieve correct ratio so that the list of books in user's e-book reader have the same dimensions (actual pixel dimensions of the book cover image might differ cross books, but if the side ratio is the same it looks better)

[Kovid Goyal (kovid)]

Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.

 status fixreleased