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ui: Improve handling being headless

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Don't assume there will always be a primary (logical) monitor, or any
(logical) monitor at all. This includes not allocating / layouting /
styling correctly when being headless.

The initial background loading will also be delayed until there are any
(logical) monitors connected.

https://bugzilla.gnome.org/show_bug.cgi?id=730551
This commit is contained in:
Jonas Ådahl
2017-04-12 14:46:54 +08:00
parent 59fc26f821
commit 5c37facc08
4 changed files with 64 additions and 12 deletions
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21
js/ui/workspaceThumbnail.js
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@ -937,7 +937,8 @@ var ThumbnailsBox = new Lang.Class({
},
addThumbnails: function(start, count) {
this._ensurePorthole();
if (!this._ensurePorthole())
return;
for (let k = start; k < start + count; k++) {
let metaWorkspace = global.screen.get_workspace_by_index(k);
let thumbnail = new WorkspaceThumbnail(metaWorkspace);
@ -1125,7 +1126,12 @@ var ThumbnailsBox = new Lang.Class({
// the size request to our children because we know how big they are and know
// that the actors aren't depending on the virtual functions being called.
this._ensurePorthole();
if (!this._ensurePorthole()) {
alloc.min_size = -1;
alloc.natural_size = -1;
return;
}
let themeNode = this.actor.get_theme_node();
let spacing = themeNode.get_length('spacing');
@ -1137,7 +1143,11 @@ var ThumbnailsBox = new Lang.Class({
},
_getPreferredWidth: function(actor, forHeight, alloc) {
this._ensurePorthole();
if (!this._ensurePorthole()) {
alloc.min_size = -1;
alloc.natural_size = -1;
return;
}
let themeNode = this.actor.get_theme_node();
@ -1158,8 +1168,13 @@ var ThumbnailsBox = new Lang.Class({
// The "porthole" is the portion of the screen that we show in the
// workspaces
_ensurePorthole: function() {
if (!Main.layoutManager.primaryMonitor)
return false;
if (!this._porthole)
this._porthole = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);
return true;
},
_allocate: function(actor, box, flags) {