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layout: Protect against broken monitor size reports

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VNC / XRDP reports nonsensial (i.e 0) monitor dimensions causing us to
end up with a dpi of "Infinity" and thus scale even though we shouldn't.

https://bugzilla.redhat.com/show_bug.cgi?id=1065788
This commit is contained in:
Adel Gadllah 2014-02-17 13:34:42 +01:00
parent 470889f1c3
commit e5c982351f
1 changed files with 6 additions and 0 deletions
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6
js/ui/layout.js
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@ -489,6 +489,12 @@ const LayoutManager = new Lang.Class({
_updateScaling: function() {
let primary = this.monitors[this.primaryIndex];
let width_mm = global.gdk_screen.get_monitor_width_mm(this.primaryIndex);
let height_mm = global.gdk_screen.get_monitor_height_mm(this.primaryIndex);
if (width_mm == 0 || height_mm == 0) {
St.ThemeContext.get_for_stage(global.stage).scale_factor = 1;
return;
}
let dpi_x = primary.width / (global.gdk_screen.get_monitor_width_mm(this.primaryIndex) / 25.4);
let dpi_y = primary.height / (global.gdk_screen.get_monitor_height_mm(this.primaryIndex) / 25.4);
if (dpi_x > HIGH_DPI_LIMIT && dpi_y > HIGH_DPI_LIMIT)