Merge lp:~widelands-dev/widelands/bug-1656245-scrollbar-mousewheel into lp:widelands

[GunChleoc]

Fix mousewheel speed for listselect

[bunnybot (widelandsofficial)]

Continuous integration builds have changed state:

Travis build 3536. State: passed. Details: https://travis-ci.org/widelands/widelands/builds/382035769.
Appveyor build 3340. State: success. Details: https://ci.appveyor.com/project/widelands-dev/widelands/build/_widelands_dev_widelands_bug_1656245_scrollbar_mousewheel-3340.

[Notabilis (notabilis27)]

Works good, the lists are scrolling as they should.

review: Approve

[GunChleoc (gunchleoc)]

Thanks for the review :)

@bunnybot merge

=== modified file 'src/ui_basic/listselect.cc'
--- src/ui_basic/listselect.cc	2018-05-13 07:15:39 +0000
+++ src/ui_basic/listselect.cc	2018-05-22 07:29:28 +0000
@@ -286,6 +286,7 @@
 	scrollbar_.set_size(scrollbar_.get_w(), get_h());
 	scrollbar_.set_pos(Vector2i(get_w() - Scrollbar::kSize, 0));
 	scrollbar_.set_pagesize(get_h() - 2 * get_lineheight());
+	scrollbar_.set_singlestepsize(get_lineheight());
 	const int steps = entry_records_.size() * get_lineheight() - get_h();
 	scrollbar_.set_steps(steps);
 	if (scrollbar_.is_enabled() && selection_mode_ == ListselectLayout::kDropdown) {