ui: highres logo for sdl and gtk, bugfixes for vnc and egl.

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Merge remote-tracking branch 'remotes/kraxel/tags/ui-20190121-pull-request' into staging

ui: highres logo for sdl and gtk, bugfixes for vnc and egl.

# gpg: Signature made Mon 21 Jan 2019 14:11:39 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20190121-pull-request:
  egl-helpers.h: do not depend on X11 Window type, use EGLNativeWindowType
  vnc: detect and optimize pageflips
  sdl: add support for high resolution window icon
  ui: fix icon display for GTK frontend under GNOME Shell with Wayland
  ui: install logo icons to $prefix/share/icons

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

configure

@@ -349,6 +349,7 @@ fdt=""
 netmap="no"
 sdl=""
 sdlabi=""
+sdl_image=""
 virtfs=""
 mpath=""
 vnc="yes"
@@ -1045,6 +1046,10 @@ for opt do
   ;;
   --with-sdlabi=*) sdlabi="$optarg"
   ;;
+  --disable-sdl-image) sdl_image="no"
+  ;;
+  --enable-sdl-image) sdl_image="yes"
+  ;;
   --disable-qom-cast-debug) qom_cast_debug="no"
   ;;
   --enable-qom-cast-debug) qom_cast_debug="yes"
@@ -1707,6 +1712,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   gcrypt          libgcrypt cryptography support
   sdl             SDL UI
   --with-sdlabi     select preferred SDL ABI 1.2 or 2.0
+  sdl_image       SDL Image support for icons
   gtk             gtk UI
   vte             vte support for the gtk UI
   curses          curses UI
@@ -3008,10 +3014,43 @@ EOF
   fi # sdl compile test
 }
 
+sdl_image_probe ()
+{
+    if test "$sdl_image" != "no" ; then
+        if $pkg_config SDL2_image --exists; then
+            if test "$static" = "yes"; then
+                sdl_image_libs=$($pkg_config SDL2_image --libs --static 2>/dev/null)
+            else
+                sdl_image_libs=$($pkg_config SDL2_image --libs 2>/dev/null)
+            fi
+            sdl_image_cflags=$($pkg_config SDL2_image --cflags 2>/dev/null)
+            sdl_image=yes
+
+            sdl_cflags="$sdl_cflags $sdl_image_cflags"
+            sdl_libs="$sdl_libs $sdl_image_libs"
+        else
+            if test "$sdl_image" = "yes" ; then
+                feature_not_found "sdl_image" "Install SDL Image devel"
+            else
+                sdl_image=no
+            fi
+        fi
+    fi
+}
+
 if test "$sdl" != "no" ; then
   sdl_probe
 fi
 
+if test "$sdl" = "yes" ; then
+  sdl_image_probe
+else
+  if test "$sdl_image" = "yes"; then
+    echo "warning: SDL Image requested, but SDL is not available, disabling"
+  fi
+  sdl_image=no
+fi
+
 if test "$sdl" = "yes" ; then
   cat > $TMPC <<EOF
 #include <SDL.h>
@@ -5751,6 +5790,8 @@ qemu_confdir=$sysconfdir$confsuffix
 qemu_moddir=$libdir$confsuffix
 qemu_datadir=$datadir$confsuffix
 qemu_localedir="$datadir/locale"
+qemu_icondir="$datadir/icons"
+qemu_desktopdir="$datadir/applications"
 
 # We can only support ivshmem if we have eventfd
 if [ "$eventfd" = "yes" ]; then
@@ -6037,6 +6078,7 @@ if test "$darwin" = "yes" ; then
     echo "Cocoa support     $cocoa"
 fi
 echo "SDL support       $sdl $(echo_version $sdl $sdlversion)"
+echo "SDL image support $sdl_image"
 echo "GTK support       $gtk $(echo_version $gtk $gtk_version)"
 echo "GTK GL support    $gtk_gl"
 echo "VTE support       $vte $(echo_version $vte $vteversion)"
@@ -6220,6 +6262,8 @@ if test "$mingw32" = "no" ; then
 fi
 echo "qemu_helperdir=$libexecdir" >> $config_host_mak
 echo "qemu_localedir=$qemu_localedir" >> $config_host_mak
+echo "qemu_icondir=$qemu_icondir" >> $config_host_mak
+echo "qemu_desktopdir=$qemu_desktopdir" >> $config_host_mak
 echo "libs_softmmu=$libs_softmmu" >> $config_host_mak
 echo "GIT=$git" >> $config_host_mak
 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
@@ -6374,6 +6418,9 @@ if test "$sdl" = "yes" ; then
   echo "CONFIG_SDLABI=$sdlabi" >> $config_host_mak
   echo "SDL_CFLAGS=$sdl_cflags" >> $config_host_mak
   echo "SDL_LIBS=$sdl_libs" >> $config_host_mak
+  if test "$sdl_image" = "yes" ; then
+      echo "CONFIG_SDL_IMAGE=y" >> $config_host_mak
+  fi
 fi
 if test "$cocoa" = "yes" ; then
   echo "CONFIG_COCOA=y" >> $config_host_mak