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constraints: Don't use intersection when sliding with custom rule
If an intersection is empty, the (x, y) coordinates are undefined, so just use the work area and in-progress constrained window rect when sliding according to the SLIDE_X or SLIDE_Y custom placement rule. https://gitlab.gnome.org/GNOME/mutter/merge_requests/496
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@ -910,18 +910,42 @@ constrain_custom_rule (MetaWindow *window,
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if (current_rule.constraint_adjustment &
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META_PLACEMENT_CONSTRAINT_ADJUSTMENT_SLIDE_X)
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{
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if (info->current.x != intersection.x)
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info->current.x = intersection.x;
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else if (info->current.width != intersection.width)
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info->current.x -= info->current.width - intersection.width;
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int current_x2;
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int work_area_monitor_x2;
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current_x2 = info->current.x + info->current.width;
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work_area_monitor_x2 = (info->work_area_monitor.x +
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info->work_area_monitor.width);
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if (current_x2 > work_area_monitor_x2)
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{
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info->current.x = MAX (info->work_area_monitor.x,
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work_area_monitor_x2 - info->current.width);
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}
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else if (info->current.x < info->work_area_monitor.x)
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{
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info->current.x = info->work_area_monitor.x;
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}
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}
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if (current_rule.constraint_adjustment &
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META_PLACEMENT_CONSTRAINT_ADJUSTMENT_SLIDE_Y)
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{
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if (info->current.y != intersection.y)
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info->current.y = intersection.y;
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else if (info->current.height != intersection.height)
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info->current.y -= info->current.height - intersection.height;
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int current_y2;
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int work_area_monitor_y2;
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current_y2 = info->current.y + info->current.height;
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work_area_monitor_y2 = (info->work_area_monitor.y +
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info->work_area_monitor.height);
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if (current_y2 > work_area_monitor_y2)
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{
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info->current.y = MAX (info->work_area_monitor.y,
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work_area_monitor_y2 - info->current.height);
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}
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else if (info->current.y < info->work_area_monitor.y)
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{
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info->current.y = info->work_area_monitor.y;
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}
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}
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meta_rectangle_intersect (&info->current, &info->work_area_monitor,
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