Plugin : Help needed

[cgrapski]

I created a plugin to put cover image data in columns. It loads and is enabled - but I don't get a choice to add it to a toolbar.

I created a ui.py file - this is it:

from calibre.customize import InterfaceActionBase
from calibre.gui2.actions import InterfaceAction
from calibre.gui2 import info_dialog
from calibre.utils.magick import Image
import os


class CoverSizeChecker(InterfaceActionBase):
    name = 'Cover Size Checker'
    description = 'Scan cover sizes and update #cover_width, #cover_height, and #cover_small.'
    supported_platforms = ['windows', 'osx', 'linux']
    author = 'Charlie'
    version = (1, 0, 0)
    minimum_calibre_version = (6, 0, 0)
    actual_plugin = 'calibre_plugins.CoverSizeChecker:CoverSizeCheckerAction'


class CoverSizeCheckerAction(InterfaceAction):
    name = 'Cover Size Checker'

    def genesis(self):
        self.qaction.triggered.connect(self.run)

    def run(self):
        gui = self.gui
        db = gui.current_db
        updated = 0
        small = []

        for book_id in db.all_book_ids():
            mi = db.get_metadata(book_id, index_is_id=True)
            cover = db.cover(book_id)

            if not cover or not os.path.exists(cover):
                continue

            try:
                img = Image()
                img.load(cover)
                w, h = img.width, img.height
            except Exception:
                continue

            mi.set('#cover_width', str(w))
            mi.set('#cover_height', str(h))

            if w < 450:
                mi.set('#cover_small', 'yes')
                small.append(f'{mi.title} — {w}x{h}')
            else:
                mi.set('#cover_small', 'no')

            db.set_metadata(book_id, mi)
            updated += 1

        msg = f'Updated {updated} books.\n\n'
        if small:
            msg += 'Small covers (

[Comfy.n]

Here's a working version, based on the action chain posted by @ownedbycats in this thread:

https://www.mobileread.com/forums/sh....php?p=4474488

[Comfy.n]

Column definitions used:

PHP Code:

Column header: Cover Width
Lookup name: #cover_width
Type: int
Description: Cover Size Checker: cover image width in pixels.
Is Composite: No
Display settings:
{
  "description": "Cover Size Checker: cover image width in pixels.",
  "number_format": "{0:,d}"
} 


PHP Code:

Column header: Cover Height
Lookup name: #cover_height
Type: int
Description: Cover Size Checker: cover image height in pixels.
Is Composite: No
Display settings:
{
  "description": "Cover Size Checker: cover image height in pixels.",
  "number_format": "{0:,d}"
} 


PHP Code:

Column header: Cover Small
Lookup name: #cover_small
Type: bool
Description: Cover Size Checker: flagged Yes when cover width is below 450 px.
Is Composite: No
Display settings:
{
  "bools_show_icons": true,
  "bools_show_text": false,
  "description": "Cover Size Checker: flagged Yes when cover width is below 450 px."
} 


[cgrapski]

Originally Posted by Comfy.n

Here's a working version, based on the action chain posted by @ownedbycats in this thread:

https://www.mobileread.com/forums/sh....php?p=4474488

Thank you. This worked - as far as it allowed me to add to the Tool Bar - and then it ran (it took a long time to do the whole library - not sure if I am able to run it on only portions - and a progress bar would be desirable).

It successfully identified the cover sizes and those that I defined as "small" - (and it gave me a list of books it identified (but there were too many for it to list them all - but those that it did it told me the title and the height and width). But it (and it told me when it finished this was the case) it wrote nothing (updated 0 records) to the columns. I don't know why. The custom columns that should have been updated were #cover_small and #cover_width and #cover_height.

[Comfy.n]

try the attached 2.0 version.

I haven't dared to run it on my main 80K library but it seems robust and will create the custom columns on single click. You can use either Scan selected or Scan all books.