monitor-manager: Take panel-orientation into account for physical size

Just like we swap the x and y resolution of the monitor modes when
the panel-orientation requires 90 or 270 degree rotation to compensate,
we should do the same for the width and height in mm of the monitor.

https://bugzilla.gnome.org/show_bug.cgi?id=782294

1 files changed, 12 insertions, 2 deletions

diff --git a/src/backends/x11/meta-output-xrandr.c b/src/backends/x11/meta-output-xrandr.c
index 4fed6e5d9..1f44cb168 100644
--- a/src/backends/x11/meta-output-xrandr.c
+++ b/src/backends/x11/meta-output-xrandr.c
@@ -769,8 +769,6 @@ meta_create_xrandr_output (MetaGpuXrandr *gpu_xrandr,
   meta_output_parse_edid (output, edid);
   g_bytes_unref (edid);
 
-  output->width_mm = xrandr_output->mm_width;
-  output->height_mm = xrandr_output->mm_height;
   output->subpixel_order = COGL_SUBPIXEL_ORDER_UNKNOWN;
   output->hotplug_mode_update = output_get_hotplug_mode_update (output);
   output->suggested_x = output_get_suggested_x (output);
@@ -779,6 +777,18 @@ meta_create_xrandr_output (MetaGpuXrandr *gpu_xrandr,
   output->panel_orientation_transform =
     output_get_panel_orientation_transform (output);
 
+  if (meta_monitor_transform_is_rotated (
+                                output->panel_orientation_transform))
+    {
+      output->width_mm = xrandr_output->mm_height;
+      output->height_mm = xrandr_output->mm_width;
+    }
+  else
+    {
+      output->width_mm = xrandr_output->mm_width;
+      output->height_mm = xrandr_output->mm_height;
+    }
+
   output_get_tile_info (output);
   output_get_modes (output, xrandr_output);
   output_get_crtcs (output, xrandr_output);