[GUI Plugin] Generate Cover

[mjart]

with all the Calibre upgrades I've been able to get around not having the plugin. Never did get it to work, but with the features in Metadata i can still correct covers in gimp then put them directly back into Calibre.

[JimmXinu]

New Test Version

As you may have heard, Calibre on Python3 betas are now available.

Which means plugins need to start being transitioned to Python3 also.

Attached is a (hopefully) Python3 compatible update to this plugin.

2019-12-20

- Changes for Python3.

Please let me know if this version works for you or not, especially on the Py3 beta.

Minimum Calibre version increased to v2.85.1 due to testing failing on v1.48.

[galaxyhub]

running calibre latest version. and new python version of plugin.
Having a problem seeing font names in the drop down list.
Using windows10 on a 4k monitor at 125% scaling.

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[theducks]

did you try other settings of Preferences: Behavior: Adjust for High resolution screens ?

[BetterRed]

Originally Posted by theducks

did you try other settings of Preferences: Behavior: Adjust for High resolution screens ?

or making the window wider, viz:



BR

[LuceC]

[QUOTE=theducks;3877213]as a test (calibre not running)

RENAME (this is in the Calibre config folder)
C:\Users\<yourID>\AppData\Roaming\calibre\plugins\Generate Cover.json

Generate Coverzzz.json <just the JSON file

****
I am getting the same error as mjart message#640. Except I'm on a MAC. I've been using generate cover plugin for years. Now, I'm getting the error "ValueError: left and/or top out of bounds"

MAC Mojave 10.14.6

Thank you

[JimmXinu]

Originally Posted by LuceC

I am getting the same error as mjart message#640. Except I'm on a MAC. I've been using generate cover plugin for years. Now, I'm getting the error "ValueError: left and/or top out of bounds"

MAC Mojave 10.14.6

Thank you

Is that before or after following the instructions you quoted?

Please run Calibre in debug mode (under Calibre's preferences dropdown), try again and post the debug log containing the error.

That will help tell me where the error occurs.

[LuceC]

Here is the log. Thank you for the help.

Spoiler:

calibre Debug log
calibre 4.15 embedded-python: True is64bit: True
Darwin-18.7.0-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '18.7.0', 'Darwin Kernel Version 18.7.0: Sat Oct 12 00:02:19 PDT 2019; root:xnu-4903.278.12~1/RELEASE_X86_64')
Python 2.7.16
OSX: ('10.14.6', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && DeDRM (6, 6, 3) && Package KFX (from KFX Input) (1, 31, 0) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Obok DeDRM (6, 5, 4) && Count Pages (1, 9, 0) && Generate Cover (1, 5, 22)
calibre 4.15 embedded-python: True is64bit: True
Darwin-18.7.0-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '18.7.0', 'Darwin Kernel Version 18.7.0: Sat Oct 12 00:02:19 PDT 2019; root:xnu-4903.278.12~1/RELEASE_X86_64')
Python 2.7.16
OSX: ('10.14.6', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && DeDRM (6, 6, 3) && Package KFX (from KFX Input) (1, 31, 0) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Obok DeDRM (6, 5, 4) && Count Pages (1, 9, 0) && Generate Cover (1, 5, 22)
devicePixelRatio: 2.0
logicalDpi: 72.0 x 72.0
physicalDpi: 110.50000166 x 110.50000166
Using calibre Qt style: True
[0.00] Starting up...
[0.02] Showing splash screen...
[0.31] splash screen shown
[0.31] Initializing db...
[0.42] db initialized
[0.42] Constructing main UI...
DEBUG: 0.0 obok::utilities.py - loading translations
DEBUG: 0.0 obok::dialogs.py - loading translations
DEBUG: 0.0 obok::config.py - loading translations
DEBUG: 0.0 obok::action_err.py - loading translations
[1.70] main UI initialized...
[1.70] Hiding splash screen
qt.qpa.fonts: Populating font family aliases took 1496 ms. Replace uses of missing font family "Sansserif" with one that exists to avoid this cost.
QImage::scaled: Image is a null image
calibre 4.15 embedded-python: True is64bit: True
Darwin-18.7.0-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '18.7.0', 'Darwin Kernel Version 18.7.0: Sat Oct 12 00:02:19 PDT 2019; root:xnu-4903.278.12~1/RELEASE_X86_64')
Python 2.7.16
OSX: ('10.14.6', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && DeDRM (6, 6, 3) && Package KFX (from KFX Input) (1, 31, 0) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Obok DeDRM (6, 5, 4) && Count Pages (1, 9, 0) && Generate Cover (1, 5, 22)
Traceback (most recent call last):
File "calibre_plugins.generate_cover.action", line 66, in _generate_cover
File "calibre_plugins.generate_cover.dialogs", line 1379, in __init__
File "calibre_plugins.generate_cover.dialogs", line 1671, in display_preview
File "calibre_plugins.generate_cover.draw", line 331, in generate_cover_for_book
File "calibre_plugins.generate_cover.draw", line 179, in create_cover_page
File "site-packages/calibre/utils/magick/legacy.py", line 111, in compose
ValueError: left and/or top out of bounds

[10.02] splash screen hidden
[10.02] Started up in 10.02 seconds with 2509 books

[JimmXinu]

Originally Posted by LuceC

Here is the log. Thank you for the help.

Hmmm. That's the part that puts the image in.

The only way I can get that error is if I manually change the image size parameters in the json file to 0.

Attached is a version that explicitly enforces the image size limits when read from the file, not just on the spin box in the dialog (and outputs a little debug data).

Please try it and let me know what happens.

[LuceC]

Originally Posted by JimmXinu

Attached is a version that explicitly enforces the image size limits when read from the file, not just on the spin box in the dialog (and outputs a little debug data).

Please try it and let me know what happens.

Great. However, I don't know how to add your version to Calibre. I see where I can "Load plugin from file" but that doesn't seem to be it. Or likelihood I'm doing something wrong.

Thank you,
Luce

[JimmXinu]

Originally Posted by LuceC

Great. However, I don't know how to add your version to Calibre. I see where I can "Load plugin from file" but that doesn't seem to be it. Or likelihood I'm doing something wrong.

Look at this post and look for the section How do I install a plugin manually?

[LuceC]

Originally Posted by JimmXinu

Look at this post and look for the section How do I install a plugin manually?

OK. I was able to download the plugin but now I'm getting a new error. ValueError: Cannot operate on null QImage

calibre, version 4.15.0
ERROR: Unhandled exception: <b>ValueError</b>:Cannot operate on null QImage

calibre 4.15 embedded-python: True is64bit: True
Darwin-18.7.0-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '18.7.0', 'Darwin Kernel Version 18.7.0: Sat Oct 12 00:02:19 PDT 2019; root:xnu-4903.278.12~1/RELEASE_X86_64')
Python 2.7.16
OSX: ('10.14.6', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && DeDRM (6, 6, 3) && Package KFX (from KFX Input) (1, 31, 0) && Generate Cover (1, 5, 23) && Count Pages (1, 9, 0) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Obok DeDRM (6, 5, 4)
Traceback (most recent call last):
File "calibre_plugins.generate_cover.action", line 66, in _generate_cover
File "calibre_plugins.generate_cover.dialogs", line 1379, in __init__
File "calibre_plugins.generate_cover.dialogs", line 1671, in display_preview
File "calibre_plugins.generate_cover.draw", line 341, in generate_cover_for_book
File "calibre_plugins.generate_cover.draw", line 189, in create_cover_page
File "site-packages/calibre/utils/magick/legacy.py", line 112, in compose
File "site-packages/calibre/utils/img.py", line 339, in overlay_image
ValueError: Cannot operate on null QImage

[JimmXinu]

Originally Posted by LuceC

OK. I was able to download the plugin but now I'm getting a new error. ValueError: Cannot operate on null QImage

At this point, I'm going to ask again: did you follow theducks's suggestion in this post and reset your GC settings?

Because it looks to me like your settings are corrupted.

If you really want to try and troubleshoot your existing settings, you can attach your Generate Cover.json (it may need to be zipped) and I'll look at it.

[LuceC]

Originally Posted by JimmXinu

Because it looks to me like your settings are corrupted.

OK. I got it to work. I re-installed (again) the Generate Cover plugin you gave me and it worked. I don't know what I did (or didn't do) the first time I tried it. I did lose all my custom covers, but I can easily re-install them.
Thank you for your help!

[JimmXinu]

New Version

Attached is the previously posted test version with debug output removed and version number incremented.

If some kind mod would put it in the OP for release, I'd appreciate it.

Thanks.