MobileRead Forums - View Single Post - New to plugin: need help on reference guide

chris33 · 12-25-2020, 04:32 PM

I have been able to change the book file for an exiting record in the database with :

Code:

self.gui.current_db.new_api.add_format(id, book_extension, path, True)

Unfortunately this doesn't seem to update the cover, or I missed something.
I want to regenerate the cover after uploading the new file using default page 1
Also I read "Covers are always changed if a new cover is provided, but are never deleted" in Calibre source code.
So should I remove it first, with remove_cover and then rebuild it with generate_cover ?
And use something like:

Code:

        img = generate_cover(self.mi, prefs=prefs, as_qimage=True)
        img.setDevicePixelRatio(dpr)
        self.preview_label.setPixmap(QPixmap.fromImage(img))

But in that case I don't see how to select page 1.
Is it the way to go or is there a simpler way to achieve this ?

12-25-2020, 04:32 PM	#19
chris33 Enthusiast Posts: 35 Karma: 10 Join Date: Sep 2020 Device: ipad, kobo libra 2	Cover regeneration I have been able to change the book file for an exiting record in the database with : Code: self.gui.current_db.new_api.add_format(id, book_extension, path, True) Unfortunately this doesn't seem to update the cover, or I missed something. I want to regenerate the cover after uploading the new file using default page 1 Also I read "Covers are always changed if a new cover is provided, but are never deleted" in Calibre source code. So should I remove it first, with remove_cover and then rebuild it with generate_cover ? And use something like: Code: img = generate_cover(self.mi, prefs=prefs, as_qimage=True) img.setDevicePixelRatio(dpr) self.preview_label.setPixmap(QPixmap.fromImage(img)) But in that case I don't see how to select page 1. Is it the way to go or is there a simpler way to achieve this ?