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Fix crash when layer surface dimensions or margins are unexpectedly large

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Leon Henrik Plickat 2021-03-27 07:06:32 +01:00 committed by Isaac Freund
parent e43e58432f
commit e6f11fc5d2
1 changed files with 32 additions and 2 deletions
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34
river/Output.zig
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@ -400,7 +400,25 @@ fn arrangeLayer(
var new_box: Box = undefined;
// Horizontal alignment
if (current_state.desired_width == 0) {
const horizontal_margin_size = current_state.margin.left + current_state.margin.right;
if (horizontal_margin_size >= bounds.width) {
// TODO find a better solution
// We currently have not reached a conclusion on how to gracefully
// handle this case yet, so we just close the surface. That will
// cause the output to be re-arranged eventually, so we can just
// exit here. Technically doing this is incorrect, but this case
// should only ever be encountered very rarely and matches the
// behavior of other compositors.
std.log.scoped(.layer_shell).warn(
"margins of layer surface '{}' are too large to be reasonably handled. Closing.",
.{layer_surface.wlr_layer_surface.namespace},
);
layer_surface.wlr_layer_surface.close();
return;
} else if (horizontal_margin_size + current_state.desired_width > bounds.width) {
new_box.y = bounds.y;
new_box.width = bounds.width - horizontal_margin_size;
} else if (current_state.desired_width == 0) {
std.debug.assert(current_state.anchor.right and current_state.anchor.left);
new_box.x = bounds.x + @intCast(i32, current_state.margin.left);
new_box.width = bounds.width - (current_state.margin.left + current_state.margin.right);
@ -417,7 +435,19 @@ fn arrangeLayer(
}
// Vertical alignment
if (current_state.desired_height == 0) {
const vertical_margin_size = current_state.margin.bottom + current_state.margin.top;
if (vertical_margin_size >= bounds.height) {
// TODO find a better solution, see explanation above
std.log.scoped(.layer_shell).warn(
"margins of layer surface '{}' are too large to be reasonably handled. Closing.",
.{layer_surface.wlr_layer_surface.namespace},
);
layer_surface.wlr_layer_surface.close();
return;
} else if (vertical_margin_size + current_state.desired_height > bounds.height) {
new_box.y = bounds.y;
new_box.height = bounds.height - vertical_margin_size;
} else if (current_state.desired_height == 0) {
std.debug.assert(current_state.anchor.top and current_state.anchor.bottom);
new_box.y = bounds.y + @intCast(i32, current_state.margin.top);
new_box.height = bounds.height - (current_state.margin.top + current_state.margin.bottom);