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From 36315cbe2b3c9d1c1b7508d9494a251eddbc4452 Mon Sep 17 00:00:00 2001
From: John Ralls <jralls@ceridwen.us>
Date: Thu, 14 Oct 2021 12:41:05 -0700
Subject: [PATCH] [quartz]Use the absolute value of Scale values for
CGContextScaleSCM
In macOS-12.sdk CGContextConverSizeToDeviceSpace returns a negative
height and passing that to CGContextScaleCTM in turn causes the cairo
surface to draw outside the window where it can't be seen. Passing the
absolute values of the scale factors fixes the display on macOS 12 without
affecting earlier macOS versions.
---
gdk/quartz/gdkwindow-quartz.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/gdk/quartz/gdkwindow-quartz.c b/gdk/quartz/gdkwindow-quartz.c
index 1a3389bb32..a5c5c31945 100644
--- a/gdk/quartz/gdkwindow-quartz.c
+++ b/gdk/quartz/gdkwindow-quartz.c
@@ -183,8 +183,7 @@ gdk_window_impl_quartz_get_context (GdkWindowImplQuartz *window_impl,
* in gdk_quartz_ref_cairo_surface () */
scale = CGContextConvertSizeToDeviceSpace (cg_context,
CGSizeMake (1.0, 1.0));
- CGContextScaleCTM (cg_context, 1.0 / scale.width, 1.0 / scale.height);
-
+ CGContextScaleCTM (cg_context, 1.0 / fabs(scale.width), 1.0 / fabs(scale.height));
return cg_context;
}
--
2.30.1 (Apple Git-130)
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