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fix(xworkspaces): Fix scrolling (#2492)

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The scroll handler had two issues:

* It did not respect the order the desktops where displayed in
* It would not wrap around on the first desktop because of an integer
  underflow

Fixes #2491
This commit is contained in:
Patrick Ziegler 2021-09-04 14:36:01 +02:00 committed by GitHub
parent ddabe3f0f4
commit 9f828800fb
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2 changed files with 30 additions and 12 deletions
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3
CHANGELOG.md
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@ -132,6 +132,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
([`#2371`](https://github.com/polybar/polybar/issues/2371))
- `polybar -m` used to show both physical outputs and randr monitors, even if the outputs were covered by monitors.
([`#2481`](https://github.com/polybar/polybar/issues/2481))
- `internal/xworkspaces`: Broken scroll-wrapping and order of workspaces when scrolling
([`#2491`](https://github.com/polybar/polybar/issues/2491))
## [3.5.6] - 2021-05-24
### Build

39
src/modules/xworkspaces.cpp
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@ -391,27 +391,42 @@ namespace modules {
focus_direction(false);
}
/**
* Focuses either the next or previous desktop.
*
* Will wrap around at the ends and go in the order the desktops are displayed.
*/
void xworkspaces_module::focus_direction(bool next) {
std::lock_guard<std::mutex> lock(m_workspace_mutex);
vector<unsigned int> indexes;
unsigned int current_desktop{ewmh_util::get_current_desktop()};
int current_index = -1;
/*
* Desktop indices in the order they are displayed.
*/
vector<unsigned int> indices;
for (auto&& viewport : m_viewports) {
for (auto&& desktop : viewport->desktops) {
indexes.emplace_back(desktop->index);
if (current_desktop == desktop->index) {
current_index = indices.size();
}
indices.emplace_back(desktop->index);
}
}
unsigned new_desktop;
unsigned int current_desktop{ewmh_util::get_current_desktop()};
if (next) {
new_desktop = math_util::min<unsigned int>(indexes.back(), current_desktop + 1);
new_desktop = new_desktop == current_desktop ? indexes.front() : new_desktop;
} else {
new_desktop = math_util::max<unsigned int>(indexes.front(), current_desktop - 1);
new_desktop = new_desktop == current_desktop ? indexes.back() : new_desktop;
if (current_index == -1) {
m_log.err("%s: Current desktop (%u) not found in list of desktops", name(), current_desktop);
return;
}
focus_desktop(new_desktop);
int offset = next? 1 : -1;
int new_index = (current_index + offset + indices.size()) % indices.size();
focus_desktop(indices.at(new_index));
}
void xworkspaces_module::focus_desktop(unsigned new_desktop) {