From cdf122657394390ebcc45e6f4c0e2bf4a90adc4a Mon Sep 17 00:00:00 2001
From: Maarten Bent <MaartenBent@users.noreply.github.com>
Date: Tue, 29 Oct 2019 00:33:53 +0100
Subject: [PATCH] Add DPI Awareness option to configure and bakefile

Add option --with-dpi=[none,system,per-monitor] to configure the dpi awareness
on Windows.

Support DPI Awareness in makefile.gcc and makefile.bcc.

The default DPI awareness is set to per-monitor.
---
 build/bakefiles/common.bkl |  5 +++++
 build/bakefiles/config.bkl |  8 ++++++++
 configure                  | 19 +++++++++++++++++++
 configure.in               | 15 +++++++++++++++
 4 files changed, 47 insertions(+)

diff --git a/build/bakefiles/common.bkl b/build/bakefiles/common.bkl
index 1fe539ad02..ac89850f6a 100644
--- a/build/bakefiles/common.bkl
+++ b/build/bakefiles/common.bkl
@@ -303,6 +303,10 @@
         <if cond="FORMAT=='dmars' or FORMAT=='dmars_smake'">_WIN32_WINNT=0x0400</if>
     </set>
 
+    <set var="WIN32_DPI_MANIFEST">
+        <if cond="PLATFORM_WIN32=='1' and IS_MSVC=='0'">wxUSE_DPI_AWARE_MANIFEST=$(USE_DPI_AWARE_MANIFEST)</if>
+    </set>
+
     <set var="CAIRO_LIB">
         <if cond="USE_CAIRO=='1'">cairo</if>
     </set>
@@ -343,6 +347,7 @@
         </if>
         <define>$(NO_VC_CRTDBG)</define>
         <define>$(WIN32_WINNT)</define>
+        <res-define>$(WIN32_DPI_MANIFEST)</res-define>
         <if cond="FORMAT=='msvc'">
             <ldflags>$(LINK_TARGET_CPU)</ldflags>
         </if>
diff --git a/build/bakefiles/config.bkl b/build/bakefiles/config.bkl
index 4562c8abaa..65a7e8f9fc 100644
--- a/build/bakefiles/config.bkl
+++ b/build/bakefiles/config.bkl
@@ -327,6 +327,14 @@ Default is to use debug CRT if and only if BUILD==debug.
         </description>
     </option>
 
+    <option name="USE_DPI_AWARE_MANIFEST">
+        <values>0,1,2</values>
+        <default-value>2</default-value>
+        <description>
+            Set DPI Awareness (win32) to none, system or per-monitor.
+        </description>
+    </option>
+
     <option name="USE_THREADS">
         <values>0,1</values>
         <default-value>1</default-value>
diff --git a/configure b/configure
index b20869091b..10b7b951e6 100755
--- a/configure
+++ b/configure
@@ -883,6 +883,7 @@ INSTALL_DATA
 INSTALL_SCRIPT
 INSTALL_PROGRAM
 RANLIB
+USE_DPI_AWARE_MANIFEST
 HOST_SUFFIX
 HEADER_PAD_OPTION
 SAMPLES_CXXFLAGS
@@ -1058,6 +1059,7 @@ enable_official_build
 enable_vendor
 enable_all_features
 enable_sys_libs
+with_dpi
 enable_universal
 with_themes
 with_gtk
@@ -2312,6 +2314,7 @@ Optional Packages:
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
   --without-subdirs       don't generate makefiles for samples/demos/...
   --with-flavour=NAME     specify a name to identify this build
+  --with-dpi=none|system|per-monitor   use dpi-awareness (Win32 only)
   --with-themes=all|list  use only the specified comma-separated list of wxUniversal themes
   --with-gtk[=VERSION]    use GTK+, VERSION can be 4 (EXPERIMENTAL), 3, 2 (default), 1 or "any"
   --with-motif            use Motif/Lesstif
@@ -4306,6 +4309,13 @@ if test "$wxUSE_ALL_FEATURES" = "no"; then
 fi
 
 
+# Check whether --with-dpi was given.
+if test "${with_dpi+set}" = set; then :
+  withval=$with_dpi; wxWITH_DPI_MANIFEST="$withval"
+fi
+
+
+
 if test "$wxUSE_GUI" = "yes"; then
 
 
@@ -18402,6 +18412,14 @@ $as_echo "#define HAVE_CXX17 1" >>confdefs.h
     fi
 fi
 
+USE_DPI_AWARE_MANIFEST=0
+if test "$wxWITH_DPI_MANIFEST" = "system" ; then
+    USE_DPI_AWARE_MANIFEST=1
+fi
+if test "$wxWITH_DPI_MANIFEST" = "per-monitor" ; then
+    USE_DPI_AWARE_MANIFEST=2
+fi
+
 if test "x$SUNCXX" != xyes; then
     if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
@@ -37820,6 +37838,7 @@ TOOLKIT_LOWERCASE=`echo $TOOLKIT | tr '[A-Z]' '[a-z]'`
 
 
 
+
 case "$TOOLKIT" in
     GTK)
         TOOLKIT_DESC="GTK+"
diff --git a/configure.in b/configure.in
index 7251023abf..e5eb9fdf64 100644
--- a/configure.in
+++ b/configure.in
@@ -408,6 +408,8 @@ if test "$wxUSE_ALL_FEATURES" = "no"; then
     DEFAULT_wxUSE_MEDIACTRL=no
 fi
 
+AC_ARG_WITH(dpi, [  --with-dpi=none|system|per-monitor   set dpi-awareness (Win32 only), default is per-monitor], [wxWITH_DPI_MANIFEST="$withval"])
+
 dnl ---------------------------------------------------------------------------
 dnl port selection
 dnl ---------------------------------------------------------------------------
@@ -1124,6 +1126,18 @@ if test -n "$wxWITH_CXX"; then
     fi
 fi
 
+case "$wxWITH_DPI_MANIFEST" in
+    none)
+        USE_DPI_AWARE_MANIFEST=0 ;;
+    system)
+        USE_DPI_AWARE_MANIFEST=1 ;;
+    per-monitor)
+        USE_DPI_AWARE_MANIFEST=2 ;;
+    *)
+        USE_DPI_AWARE_MANIFEST=0
+        AC_MSG_WARN([Unsupported DPI awareness value "$wxWITH_DPI_MANIFEST" ignored.])
+esac
+
 dnl ar command
 dnl   defines AR with the appropriate command
 dnl
@@ -8095,6 +8109,7 @@ AC_SUBST(SAMPLES_RPATH_FLAG)
 AC_SUBST(SAMPLES_CXXFLAGS)
 AC_SUBST(HEADER_PAD_OPTION)
 AC_SUBST(HOST_SUFFIX)
+AC_SUBST(USE_DPI_AWARE_MANIFEST)
 
 case "$TOOLKIT" in
     GTK)