hotwatermorning · hotwatermorning · Aug 20, 2019 · Aug 20, 2019 · Aug 20, 2019 · Aug 20, 2019
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -38,15 +38,57 @@ else()
 endif()
 
 ####################################################################
-# optoins
+# options
 ####################################################################
 option(ENABLE_BUILD_TESTS "Build test project" OFF)
 
 ####################################################################
-# configure project
+# define project
+####################################################################
+project("Vst3SampleHost")
+set(PROJECT_ROOT "${CMAKE_CURRENT_SOURCE_DIR}")
+
+####################################################################
+# update commit id file
 ####################################################################
+set(APP_COMMIT_ID_INC "${PROJECT_ROOT}/src/app/CommitID.inc")
+
+execute_process(
+  COMMAND "git" "rev-parse" "HEAD"
+  OUTPUT_VARIABLE APP_COMMIT_ID
+  RESULT_VARIABLE RESULT_REV_PARSE
+  )
+
+if(NOT (RESULT_REV_PARSE EQUAL 0))
+  message(FATAL_ERROR "failed to get current commit id: ${RESULT_REV_PARSE}")
+endif()
+
+string(STRIP ${APP_COMMIT_ID} APP_COMMIT_ID)
+
+if(EXISTS "${APP_COMMIT_ID_INC}")
+  file(READ "${APP_COMMIT_ID_INC}" PREV_APP_COMMIT_ID)
+  message("PREV : ${PREV_APP_COMMIT_ID}")
+  string(REGEX MATCH "L\"[^\"]+\"" PREV_APP_COMMIT_ID "${PREV_APP_COMMIT_ID}")
+  if(NOT PREV_APP_COMMIT_ID)
+    message(FATAL_ERROR "failed to get previous commit id")
+  endif()
+else()
+  unset(PREV_APP_COMMIT_ID)
+endif()
+
+if((DEFINED PREV_APP_COMMIT_ID) AND ("${PREV_APP_COMMIT_ID}" STREQUAL "${APP_COMMIT_ID}"))
+  # do nothing
+  # message("same commit id")
+else()
+  message("write commit id to ${APP_COMMIT_ID_INC}")
+  file(WRITE "${APP_COMMIT_ID_INC}" "L\"${APP_COMMIT_ID}\"")
+endif()
 
+####################################################################
+# configure project
+####################################################################
 project("Vst3SampleHost")
+set(PROJECT_ROOT "${CMAKE_CURRENT_SOURCE_DIR}")
 
 set(CMAKE_CXX_STANDARD 17)
 
@@ -56,8 +98,6 @@ get_filename_component(WX_DIR "./ext/wxWidgets" ABSOLUTE)
 function(ADD_VST3SAMPLEHOST_TARGET EXE_NAME)
   cmake_parse_arguments(AVP "ENABLE_BUILD_TESTS" "" "" ${ARGN})
 
-  set(PROJECT_ROOT "${CMAKE_CURRENT_SOURCE_DIR}")
-
   set(TARGET_NAME "${EXE_NAME}")
 
   if(NOT ${AVP_ENABLE_BUILD_TESTS})

diff --git a/src/app/AppConfig.cpp b/src/app/AppConfig.cpp
@@ -0,0 +1,11 @@
+#include "./AppConfig.hpp"
+
+NS_HWM_BEGIN
+
+wchar_t const * const kAppName = L"Vst3SampleHost";
+wchar_t const * const kAppVersion = L"0.0.0.1";
+wchar_t const * const kAppCommitID =
+#include "./CommitID.inc"
+;
+
+NS_HWM_END
diff --git a/src/app/AppConfig.hpp b/src/app/AppConfig.hpp
@@ -0,0 +1,10 @@
+#pragma once
+
+NS_HWM_BEGIN
+
+extern wchar_t const * const kAppName;
+extern wchar_t const * const kAppVersion;
+extern wchar_t const * const kAppCommitID;
+
+NS_HWM_END
+
diff --git a/src/gui/AboutDialog.cpp b/src/gui/AboutDialog.cpp
@@ -133,6 +133,19 @@ class AboutDialog
 
         dc.SetFont(font_);
         dc.SetTextForeground(*wxWHITE);
+
+        auto font_size = font_.GetPixelSize();
+        auto padding = 62;
+        auto text_rect = wxRect{
+            wxPoint{ padding, img.GetHeight() / 2 },
+            wxSize { img.GetWidth() - padding * 2, font_size.GetHeight() }
+        };
+
+        auto const version_str =
+        String(L"Version: ") + kAppVersion +
+        L" (" + String(kAppCommitID).substr(0, 8) + L")";
+
+        dc.DrawLabel(version_str, text_rect, wxALIGN_CENTER_VERTICAL);
     }
 
 private:

diff --git a/src/prefix.hpp b/src/prefix.hpp
@@ -57,9 +57,8 @@ using UInt16 = std::uint16_t;
 using UInt32 = std::uint32_t;
 using UInt64 = std::uint64_t;
 
-constexpr wchar_t const *kAppName = L"Vst3SampleHost";
-
 NS_HWM_END
 
+#include "app/AppConfig.hpp"
 #include "misc/DebuggerOutputStream.hpp"
 #include "misc/StrCnv.hpp"