[Skim-app-users] Blank region at bottom of Skim window; grows as document is scrolled.

[l***@icloud.com]

For many versions, Skim has had a ginormous bug on my machine. In the main window where the PDF is displayed, a blank region appears at the bottom. The farther into a document I scroll, the larger the blank region gets. I am currently looking at page 358 of a book and the blank region is about 1/4 the height of my screen. On further inspection, it appears that the blank region grows by very nearly 1/2 pixel per page-scrolled of the document.

A probably related problem: The cursor is also offset by the same amount--the affected region is above the place where the cursor appears.

Here is a screen shot of a Skim window showing page 570 of a document. I have just drawn a blue line across the bottom-most visible portion of the window BY PLACING THE CURSOR AT THE EXTREME BOTTOM OF THE WINDOW. The screen shot utility hides the cursor or you could see it there. The displayed blue line is actually clipped by one pixel as well.

I am using Skim version 1.4.20 but as I mentioned, this problem has existed for a long time. OS X 10.9.5, late 2008 MacBook Pro.

Jerry

[Christiaan Hofman]

Post by l***@icloud.com
For many versions, Skim has had a ginormous bug on my machine. In the main window where the PDF is displayed, a blank region appears at the bottom. The farther into a document I scroll, the larger the blank region gets. I am currently looking at page 358 of a book and the blank region is about 1/4 the height of my screen. On further inspection, it appears that the blank region grows by very nearly 1/2 pixel per page-scrolled of the document.
A probably related problem: The cursor is also offset by the same amount--the affected region is above the place where the cursor appears.
Here is a screen shot of a Skim window showing page 570 of a document. I have just drawn a blue line across the bottom-most visible portion of the window BY PLACING THE CURSOR AT THE EXTREME BOTTOM OF THE WINDOW. The screen shot utility hides the cursor or you could see it there. The displayed blue line is actually clipped by one pixel as well.
I am using Skim version 1.4.20 but as I mentioned, this problem has existed for a long time. OS X 10.9.5, late 2008 MacBook Pro.
Jerry

That’s weird. Unfortunately this does not look like something we can fix. Apple’s PDFKit does the PDF layout, we don’t control how it does that. So it must be a bug in Apple’s code. I guess they make some rounding errors in the placement of the pages that add up for a large number of pages.

The only way I can see to fix this is to upgrade your system. Which you probably want to do anyway, if you’re running 10.9.

Christiaan

[l***@icloud.com]

Post by l***@icloud.com
For many versions, Skim has had a ginormous bug on my machine. In the main window where the PDF is displayed, a blank region appears at the bottom. The farther into a document I scroll, the larger the blank region gets. I am currently looking at page 358 of a book and the blank region is about 1/4 the height of my screen. On further inspection, it appears that the blank region grows by very nearly 1/2 pixel per page-scrolled of the document.
A probably related problem: The cursor is also offset by the same amount--the affected region is above the place where the cursor appears.
Here is a screen shot of a Skim window showing page 570 of a document. I have just drawn a blue line across the bottom-most visible portion of the window BY PLACING THE CURSOR AT THE EXTREME BOTTOM OF THE WINDOW. The screen shot utility hides the cursor or you could see it there. The displayed blue line is actually clipped by one pixel as well.
I am using Skim version 1.4.20 but as I mentioned, this problem has existed for a long time. OS X 10.9.5, late 2008 MacBook Pro.
Jerry

That’s weird. Unfortunately this does not look like something we can fix. Apple’s PDFKit does the PDF layout, we don’t control how it does that. So it must be a bug in Apple’s code. I guess they make some rounding errors in the placement of the pages that add up for a large number of pages.
The only way I can see to fix this is to upgrade your system. Which you probably want to do anyway, if you’re running 10.9.
Christiaan

Yes, I will upgrade soon. But Skim is the only PDF app that does this, so the problem is probably a little more subtle than it first appears. Other PDF apps that work OK include Preview, DevonThink stuff, some LaTeX previewers, etc.

Jerry