[mutter] monitor: Check mode resolution area when determining advertisability

[Jonas Ådahl <jadahl src gnome org>]

commit 989a281b5f8fea9474ebbefaaad537520133666e
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Aug 12 10:52:48 2019 +0200

    monitor: Check mode resolution area when determining advertisability
    
    Explicitly checking the dimensions of a mode to determine whether it
    should be advertised or not fails for portrait style modes. Avoid this
    by checking the area instead.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/722

 src/backends/meta-monitor.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/src/backends/meta-monitor.c b/src/backends/meta-monitor.c
index c4311a56f..a6a57c6d5 100644
--- a/src/backends/meta-monitor.c
+++ b/src/backends/meta-monitor.c
@@ -34,8 +34,7 @@
 #define SCALE_FACTORS_STEPS (1.0 / (float) SCALE_FACTORS_PER_INTEGER)
 #define MINIMUM_SCALE_FACTOR 1.0f
 #define MAXIMUM_SCALE_FACTOR 4.0f
-#define MINIMUM_LOGICAL_WIDTH 800
-#define MINIMUM_LOGICAL_HEIGHT 480
+#define MINIMUM_LOGICAL_AREA (800 * 480)
 #define MAXIMUM_REFRESH_RATE_DIFF 0.001
 
 typedef struct _MetaMonitorMode
@@ -1661,8 +1660,7 @@ static gboolean
 is_logical_size_large_enough (int width,
                               int height)
 {
-  return width >= MINIMUM_LOGICAL_WIDTH &&
-         height >= MINIMUM_LOGICAL_HEIGHT;
+  return width * height >= MINIMUM_LOGICAL_AREA;
 }
 
 gboolean