From b6a20b77926727af99b39773ee104ffa457c604f Mon Sep 17 00:00:00 2001
From: Matthew Petroff <matthew@mpetroff.net>
Date: Tue, 18 Oct 2016 15:10:13 -0400
Subject: Add hi-dpi support for main view.

Based on Evince commits 8b965e769808815df9c75a10a0e4972c0904d26a
and a612f809e4e23d88a661a9604ce84f332189a658.

https://github.com/linuxmint/xreader/commit/4eccf6b
---
 configure.ac | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index b0d22d03..55149721 100644
--- a/configure.ac
+++ b/configure.ac
@@ -123,6 +123,23 @@ PKG_CHECK_MODULES(GMODULE, gmodule-2.0 >= $GLIB_REQUIRED)
 
 PKG_CHECK_MODULES([SHELL_CORE],[libxml-2.0 >= $LIBXML_REQUIRED gtk+-3.0 >= $GTK_REQUIRED gio-2.0 >= $GLIB_REQUIRED gthread-2.0 x11])
 
+# Although GTK+ 3.10 includes hi-dpi functionality, it does not require a cairo with
+# cairo_surface_set_device_scale(), which we also need if we're to support hi-dpi,
+# so we need check for that explicity.
+
+atril_save_LIBS=$LIBS
+LIBS="$LIBS $LIBVIEW_LIBS"
+AC_CHECK_FUNCS(cairo_surface_set_device_scale)
+LIBS=$atril_save_LIBS
+
+AC_MSG_CHECKING([for hi-dpi support])
+if test "$ac_cv_func_cairo_surface_set_device_scale" = yes ; then
+   AC_DEFINE([HAVE_HIDPI_SUPPORT], [1], [Define if cairo and GTK+ have necessary functions for hi-dpi])
+   AC_MSG_RESULT([yes])
+else
+   AC_MSG_RESULT([no])
+fi
+
 dnl
 dnl zlib support
 dnl
-- 
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