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layout: Compute strut side more precisely for non primary monitors

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Don't assume struts are on the primary monitor while computing
the strut side. Instead, find the first monitor that overlaps the
strut and compute the strut side using it.

https://bugzilla.gnome.org/show_bug.cgi?id=744183
This commit is contained in:
Sylvain Pasche 2015-02-08 23:03:07 +01:00 committed by Florian Müllner
parent f4301147bb
commit c2f5813463
1 changed files with 20 additions and 27 deletions
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47
js/ui/layout.js
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@ -973,46 +973,39 @@ const LayoutManager = new Lang.Class({
let y1 = Math.max(y, 0);
let y2 = Math.min(y + h, global.screen_height);
// NetWM struts are not really powerful enought to handle
// a multi-monitor scenario, they only describe what happens
// around the outer sides of the full display region. However
// it can describe a partial region along each side, so
// we can support having the struts only affect the
// primary monitor. This should be enough as we only have
// chrome affecting the struts on the primary monitor so
// far.
//
// Metacity wants to know what side of the screen the
// strut is considered to be attached to. If the actor is
// Metacity wants to know what side of the monitor the
// strut is considered to be attached to. First, we find
// the monitor that contains the strut. If the actor is
// only touching one edge, or is touching the entire
// border of the primary monitor, then it's obvious which
// side to call it. If it's in a corner, we pick a side
// arbitrarily. If it doesn't touch any edges, or it spans
// the width/height across the middle of the screen, then
// we don't create a strut for it at all.
// border of that monitor, then it's obvious which side
// to call it. If it's in a corner, we pick a side
// arbitrarily. If it doesn't touch any edges, or it
// spans the width/height across the middle of the
// screen, then we don't create a strut for it at all.
let monitor = this.findMonitorForActor(actorData.actor);
let side;
let primary = this.primaryMonitor;
if (x1 <= primary.x && x2 >= primary.x + primary.width) {
if (y1 <= primary.y)
if (x1 <= monitor.x && x2 >= monitor.x + monitor.width) {
if (y1 <= monitor.y)
side = Meta.Side.TOP;
else if (y2 >= primary.y + primary.height)
else if (y2 >= monitor.y + monitor.height)
side = Meta.Side.BOTTOM;
else
continue;
} else if (y1 <= primary.y && y2 >= primary.y + primary.height) {
if (x1 <= 0)
} else if (y1 <= monitor.y && y2 >= monitor.y + monitor.height) {
if (x1 <= monitor.x)
side = Meta.Side.LEFT;
else if (x2 >= primary.x + primary.width)
else if (x2 >= monitor.x + monitor.width)
side = Meta.Side.RIGHT;
else
continue;
} else if (x1 <= 0)
} else if (x1 <= monitor.x)
side = Meta.Side.LEFT;
else if (y1 <= 0)
else if (y1 <= monitor.y)
side = Meta.Side.TOP;
else if (x2 >= global.screen_width)
else if (x2 >= monitor.x + monitor.width)
side = Meta.Side.RIGHT;
else if (y2 >= global.screen_height)
else if (y2 >= monitor.y + monitor.height)
side = Meta.Side.BOTTOM;
else
continue;