From 027696e9c6ac0cf4b6a7bd7905358104f9bed6cd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Sat, 15 Feb 2020 19:06:28 +0100
Subject: [PATCH] wayland: calculate DPI from physical size, not logical size

xdg_output_handle_logical_size() reports _logical_ output size. That
is, it is scaled by the output's scale factor.

We want the _actual_ DPI. The _real_ output size is reported by
output_mode(), so use that instead.
---
 wayland.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/wayland.c b/wayland.c
index 8b529a9c..8528f987 100644
--- a/wayland.c
+++ b/wayland.c
@@ -153,6 +153,8 @@ output_mode(void *data, struct wl_output *wl_output, uint32_t flags,
 
     struct monitor *mon = data;
     mon->refresh = (float)refresh / 1000;
+    mon->width_px = width;
+    mon->height_px = height;
 }
 
 static void
@@ -189,10 +191,6 @@ static void
 xdg_output_handle_logical_size(void *data, struct zxdg_output_v1 *xdg_output,
                                int32_t width, int32_t height)
 {
-    struct monitor *mon = data;
-    mon->width_px = width;
-    mon->height_px = height;
-    output_update_ppi(mon);
 }
 
 static void