layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html@97036ab72558
layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 <!DOCTYPE html>
2 <meta http-equiv="msthemecompatible" content="no">
3 <div style="width: 200px; height: 200px; overflow: scroll;">
4 <div style="width: 3725px; height: 3725px"></div>
5 </div>
6 <!--
7 The size of the inner div is computed as follow:
9 Input:
10 outer_div_size: size of the div containing the scrollbar
11 button_size: size of the scrollbar arrow buttons
12 scrollbar_thickness: width/height of a vertical/horizontal scrollbar respectively
13 thumb_size: height/width of the thumb of a vertical/horizontal scrollbar respectively
14 Output:
15 inner_div_size: size of the div to be scrolled
17 Formula:
18 slider_size = outer_div_size - 2 * button_size - scrollbar_thickness
19 thumb_size = slider_size * (outer_div_size / inner_div_size)
20 which gives:
21 inner_div_size = (outer_div_size - 2 * button_size - scrollbar_thickness) * (outer_div_size / thumb_size)
23 Testcase constants:
24 outer_div_size = 200
26 On XP/Vista at 96 dpi with theme disabled:
27 thumb_size = 8 (minimum size)
28 button_size = 17
29 scrollbar_thickness = 17
31 inner_div_size = (200 - 2 * 17 - 17) * (200 / 8) = 3725
32 -->
