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Code Issues

config/output: Update output position in two passes

Browse Source 
The modeset logic iterates over all outputs at the end, sets their new
position in the layout and takes a copy of its geometry that is later
referenced by layout and scene management code.

If one output is auto configured, then a later output that is manually
configured can lead to the first output being moved without the stored
geometry being updated.

Split this into two passes: The first pass finalizes the output config
and makes updates to the layout, while the second pass updates the copy
of the geometry and arranges things as a result of it.
This commit is contained in:
Kenny Levinsen 2024-11-05 15:31:13 +01:00 committed by Simon Ser
parent 4cfcb3643b
commit 78fa4e9856
1 changed files with 16 additions and 8 deletions
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24
sway/config/output.c
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@ -533,14 +533,6 @@ static bool finalize_output_config(struct output_config *oc, struct sway_output
wlr_output_layout_add_auto(root->output_layout, wlr_output);
}
// Update output->{lx, ly, width, height}
struct wlr_box output_box;
wlr_output_layout_get_box(root->output_layout, wlr_output, &output_box);
output->lx = output_box.x;
output->ly = output_box.y;
output->width = output_box.width;
output->height = output_box.height;
if (!output->enabled) {
output_enable(output);
}
@ -562,6 +554,15 @@ static bool finalize_output_config(struct output_config *oc, struct sway_output
return true;
}
static void output_update_position(struct sway_output *output) {
struct wlr_box output_box;
wlr_output_layout_get_box(root->output_layout, output->wlr_output, &output_box);
output->lx = output_box.x;
output->ly = output_box.y;
output->width = output_box.width;
output->height = output_box.height;
}
// find_output_config_from_list returns a merged output_config containing all
// stored configuration that applies to the specified output.
static struct output_config *find_output_config_from_list(
@ -933,6 +934,13 @@ static bool apply_resolved_output_configs(struct matched_output_config *configs,
sway_log(SWAY_DEBUG, "Finalizing config for %s",
cfg->output->wlr_output->name);
finalize_output_config(cfg->config, cfg->output);
}
// Output layout being applied in finalize_output_config can shift outputs
// around, so we do a second pass to update positions and arrange.
for (size_t idx = 0; idx < configs_len; idx++) {
struct matched_output_config *cfg = &configs[idx];
output_update_position(cfg->output);
arrange_layers(cfg->output);
}