Some Koreader tips and tricks - Page 2

ebrahimpak · 07-26-2014, 01:56 AM

Quote:

Originally Posted by Ken Maltby

Do you mean Kobo's Firmware? 3.5?

Luck;
Ken

The .pam files that screenshot makes can be converted to .jpg using Image Magick Display. Or to many other formats. You would right click one of your .pam screenshots and select "Properties" then set the "Opens with:" to the IMDisplay .exe. After that all you need to do is double click on the .pam file and it will open in the program. Then you use the "File" tab "Save As" option and give it a name with the extension for the format you want the image in, .jpg, .png, .tif, .tiff, .bmp, .svg, .gif, ect...

Luck;
Ken

Each time I had to convert it online through a website.

roger64 · 07-26-2014, 02:22 AM

Quote:

Originally Posted by NiLuJe

@roger64: Yeah, cr3.ini is NOT shipped with KOReader, it's built at runtime the first time a CRe-handled document is opened.

@NiLuJe

Thanks for your help. I hope some others will learn from my mistakes.

As the advised tweaking of the font.hinting.mode brought no discernible change for emboldening, I realized that there should be another reason: my mistake was that I had kept the the "embedded style" ON while I was using a side-loaded font...

Now, when I select "embedded style": OFF, I got these results for "regular" and "bold (see screenshots) using my side-loaded font. The emboldening looks a little too strong. Such a setting cannot probably be kept for a whole book.

It would be precious if the user could have some control over it (like for frontlight levels).

Edit: screenshots taken with font.hinting.mode left to 2.

NiLuJe · 07-26-2014, 12:06 PM

@roger64: Unrelated. Hinting mode is honored no matter what the CSS used

.

Still convinced it's the hinting, check again. (It's not a setting you can change while KOReader is running, AFAICT).

Alternatively: what's the font (w/ a link if it's licensed appropriately)?

roger64 · 07-26-2014, 05:11 PM

I use the regular and italic otf from Linux Libertine

NiLuJe · 07-26-2014, 05:29 PM

And the bold, I'm hoping

.

Well, apparently, it's just *that* bold, and in fact, the lightest rendering mode is the autohinter.

EDIT: Haha! It's that bold, because there's also a SemiBold weight

.

Which ones are you using? (If you're *not* using any of the bold variants, the boldening will be synthetic, and that's also usually ends up being *very* bold).

roger64 · 07-27-2014, 02:21 AM

Quote:

Originally Posted by NiLuJe

And the bold, I'm hoping

.

Well, apparently, it's just *that* bold, and in fact, the lightest rendering mode is the autohinter.

EDIT: Haha! It's that bold, because there's also a SemiBold weight

.

Which ones are you using? (If you're *not* using any of the bold variants, the boldening will be synthetic, and that's also usually ends up being *very* bold).

As reported here, my first try has been to side-load four fonts (reg, it, bold, bold-it). But, of course, the resulting "bold" was too strong for the use I intended: to provide an slightly bolder display for sustained standard reading (not only for titles).

So, I intently side-loaded only the regular and italic fonts and got a -synthetic- slightly bolder display that I could use for standard reading.

I lost it recently and I am at a loss to find it again. Maybe there will be a way to tune this "synthetic" boldening?

NiLuJe · 07-27-2014, 11:20 AM

@roger64: I'm not quite sure how the synthetic bolding is happening exactly since we're not using Fontconfig, but the change in behavior is probably due to the FreeType upgrade.

The synthetic stuff was never part of the 'proper' API, and thus is subject to silent changes (even more so than the rest, which is of course also subject to change in how stuff renders ;p). It was also utterly broken for a while for example.

Try using the SemiBold (although I'm not sure if it'll get picked up properly, given that we're not using FC), or stay with regular and push the contrast to the max. Or tweak the font in a font editor to tweak the weight. It's open source, so you have pristine source material to work with.

ebrahimpak · 07-27-2014, 12:29 PM

Quote:

Originally Posted by PeterT

Sorry I had assumed that the reader used Kobo's screen print functionality as opposed to its own. And yes, for several versions the native screen print has not worked.

I can confirm that mine works regularly, except when want to take a snapshot from its dictionary. It's so strange

roger64 · 07-28-2014, 06:31 AM

Quote:

Originally Posted by NiLuJe

[...] the change in behavior is probably due to the FreeType upgrade.

If I understand properly, the choice offered in the main Menu of koreader between Regular and Bold modifies the main font. For this reason, it should not switch suddenly from Regular to a full Bold. Who can use it this way? It's a pity you have no control over this emboldening process.

Quote:

Originally Posted by NiLuJe

[...] tweak the font in a font editor to tweak the weight. It's open source, so you have pristine source material to work with.

I intended some months ago to do what JS Wolf did with Charis Sil, using font-Forge and adding a small emboldening increment (3 to 5) but, for some reason, it generated too many mistakes and the end result was unusable.

edit: I'll make a new try with another tool.

JimMcLaren · 07-28-2014, 09:39 AM

Quote:

Originally Posted by Ken Maltby

The .pam files that screenshot makes can be converted to .jpg using Image Magick Display. Or to many other formats. You would right click one of your .pam screenshots and select "Properties" then set the "Opens with:" to the IMDisplay .exe. After that all you need to do is double click on the .pam file and it will open in the program. Then you use the "File" tab "Save As" option and give it a name with the extension for the format you want the image in, .jpg, .png, .tif, .tiff, .bmp, .svg, .gif, ect...

You can also use Paint.net with this plugin.

NiLuJe · 07-28-2014, 11:36 AM

@roger64: Hmm, which 'Bold' menu are you talking about exactly? The one I'm thinking of is the one inside the reader (at the bottom, with the font size & co).

roger64 · 07-28-2014, 03:43 PM

@NiLuJe

yes, at the bottom of the page, where the user can select between "regular" or "bold".

NiLuJe · 07-28-2014, 04:45 PM

@roger64: Right, that's the one I was thinking of then, so what I mentioned earlier holds

.

roger64 · 08-01-2014, 11:28 AM

@NiLuJe

As I failed to find a solution, I reverted to this nightly. It provides a nightmode and -for me- a light boldening of the font good for sustained reading. It's a trade-off, I lose the hyphenation selection and the screenshots (among others)...

So I cannot give you a screenshot.

NiLuJe · 08-01-2014, 11:48 AM

@roger64: CRE's code is a bit murky to follow, but I'm not convinced it's actually doing anything synthetic at all in that case. I'm pretty sure it just goes and search for the font most closely matching a default 'bold' weight in the selected family.

No idea how well it deals with irregular weights, like Demi/SemiBold though.

07-26-2014, 05:29 PM	#20
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	And the bold, I'm hoping . Well, apparently, it's just that bold, and in fact, the lightest rendering mode is the autohinter. EDIT: Haha! It's that bold, because there's also a SemiBold weight . Which ones are you using? (If you're not using any of the bold variants, the boldening will be synthetic, and that's also usually ends up being very bold). Attached Thumbnails Last edited by NiLuJe; 07-26-2014 at 05:32 PM.

07-27-2014, 11:20 AM	#22
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@roger64: I'm not quite sure how the synthetic bolding is happening exactly since we're not using Fontconfig, but the change in behavior is probably due to the FreeType upgrade. The synthetic stuff was never part of the 'proper' API, and thus is subject to silent changes (even more so than the rest, which is of course also subject to change in how stuff renders ;p). It was also utterly broken for a while for example. Try using the SemiBold (although I'm not sure if it'll get picked up properly, given that we're not using FC), or stay with regular and push the contrast to the max. Or tweak the font in a font editor to tweak the weight. It's open source, so you have pristine source material to work with. Last edited by NiLuJe; 07-27-2014 at 12:52 PM.

08-01-2014, 11:28 AM	#29
roger64 Wizard Posts: 2,625 Karma: 3120635 Join Date: Jan 2009 Device: Kindle PW3 (wifi)	@NiLuJe As I failed to find a solution, I reverted to this nightly. It provides a nightmode and -for me- a light boldening of the font good for sustained reading. It's a trade-off, I lose the hyphenation selection and the screenshots (among others)... So I cannot give you a screenshot. Last edited by roger64; 08-01-2014 at 11:31 AM.

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07-26-2014, 12:06 PM	#18
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@roger64: Unrelated. Hinting mode is honored no matter what the CSS used . Still convinced it's the hinting, check again. (It's not a setting you can change while KOReader is running, AFAICT). Alternatively: what's the font (w/ a link if it's licensed appropriately)?

07-26-2014, 05:11 PM	#19
roger64 Wizard Posts: 2,625 Karma: 3120635 Join Date: Jan 2009 Device: Kindle PW3 (wifi)	I use the regular and italic otf from Linux Libertine

07-28-2014, 11:36 AM	#26
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@roger64: Hmm, which 'Bold' menu are you talking about exactly? The one I'm thinking of is the one inside the reader (at the bottom, with the font size & co).

07-28-2014, 03:43 PM	#27
roger64 Wizard Posts: 2,625 Karma: 3120635 Join Date: Jan 2009 Device: Kindle PW3 (wifi)	@NiLuJe yes, at the bottom of the page, where the user can select between "regular" or "bold".

07-28-2014, 04:45 PM	#28
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@roger64: Right, that's the one I was thinking of then, so what I mentioned earlier holds .

08-01-2014, 11:48 AM	#30
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@roger64: CRE's code is a bit murky to follow, but I'm not convinced it's actually doing anything synthetic at all in that case. I'm pretty sure it just goes and search for the font most closely matching a default 'bold' weight in the selected family. No idea how well it deals with irregular weights, like Demi/SemiBold though.