Automatically generate macOS icon file

media/CMakeLists.txt

@@ -1,16 +1,21 @@
 set(LINUX_ICON_SIZES 16 22 24 32 48 64 128)
 set(WINDOWS_ICON_SIZES 16 24 32 48 256)
+set(MACOS_ICON_SIZES 16 32 128 256 512)
 
 find_program(CONVERT_EXECUTABLE convert)
+find_program(PNG2ICNS_EXECUTABLE png2icns)
 
 if(CONVERT_EXECUTABLE)
   set(ICON_FILES icons/tigervnc.ico)
   foreach(SIZE ${LINUX_ICON_SIZES})
     list(APPEND ICON_FILES ${CMAKE_CURRENT_SOURCE_DIR}/icons/tigervnc_${SIZE}.png)
   endforeach()
+  if(PNG2ICNS_EXECUTABLE)
+    list(APPEND ICON_FILES icons/tigervnc.icns)
+  endif()
   add_custom_target(icons DEPENDS ${ICON_FILES})
 
-  foreach(SIZE ${LINUX_ICON_SIZES} ${WINDOWS_ICON_SIZES})
+  foreach(SIZE ${LINUX_ICON_SIZES} ${WINDOWS_ICON_SIZES} ${MACOS_ICON_SIZES})
     if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/tigervnc_${SIZE}.svg)
       set(ICON_SRC_FILE ${CMAKE_CURRENT_SOURCE_DIR}/tigervnc_${SIZE}.svg)
     else()
@@ -37,4 +42,16 @@ if(CONVERT_EXECUTABLE)
       ${CMAKE_CURRENT_SOURCE_DIR}/icons/tigervnc.ico
     DEPENDS ${ICO_DEPENDS}
     COMMENT "Generating icons/tigervnc.ico")
+
+  if(PNG2ICNS_EXECUTABLE)
+    # FIXME: Should be a drop shadow here as well
+    foreach(SIZE ${MACOS_ICON_SIZES})
+      list(APPEND ICNS_FILES ${CMAKE_CURRENT_SOURCE_DIR}/icons/tigervnc_${SIZE}.png)
+    endforeach()
+    add_custom_command(OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/icons/tigervnc.icns
+      COMMAND ${PNG2ICNS_EXECUTABLE}
+          ${CMAKE_CURRENT_SOURCE_DIR}/icons/tigervnc.icns ${ICNS_FILES}
+      DEPENDS ${ICNS_FILES}
+      COMMENT "Generating icons/tigervnc.icns")
+  endif()
 endif()

release/makemacapp.in

@@ -42,7 +42,7 @@ mkdir -p "$APPROOT/Contents/MacOS"
 mkdir -p "$APPROOT/Contents/Resources"
 
 install -m 755 vncviewer/vncviewer "$APPROOT/Contents/MacOS/TigerVNC Viewer"
-install -m 644 $SRCDIR/release/tigervnc.icns "$APPROOT/Contents/Resources/"
+install -m 644 $SRCDIR/media/icons/tigervnc.icns "$APPROOT/Contents/Resources/"
 install -m 644 release/Info.plist "$APPROOT/Contents/"
 
 for lang in `cat "$SRCDIR/po/LINGUAS"`; do