From ae25d8012939de481633fa3572e7cd598d8a5a5f Mon Sep 17 00:00:00 2001
From: Jonas Kümmerlin <jonas@kuemmerlin.eu>
Date: Wed, 1 May 2019 16:27:25 +0200
Subject: redo compat function architecture

way less code at the expense of explicit initialization
---
 alf/alfcompat.h | 85 +++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 58 insertions(+), 27 deletions(-)

(limited to 'alf/alfcompat.h')

diff --git a/alf/alfcompat.h b/alf/alfcompat.h
index 0d5a7d4..6926de5 100644
--- a/alf/alfcompat.h
+++ b/alf/alfcompat.h
@@ -8,39 +8,51 @@
 #define WM_DPICHANGED       0x02E0
 #endif
 
+#ifdef __cplusplus
 extern "C" IMAGE_DOS_HEADER __ImageBase;
+#else
+extern IMAGE_DOS_HEADER __ImageBase;
+#endif
 #define ALF_HINSTANCE ((HINSTANCE)&__ImageBase)
 
 typedef LRESULT (CALLBACK *ALF_COMPAT_SUBCLASSPROC)(HWND,UINT,WPARAM,LPARAM,UINT_PTR,DWORD_PTR);
 
 typedef struct {
-    UINT    cbSize;
-    int     iBorderWidth;
-    int     iScrollWidth;
-    int     iScrollHeight;
-    int     iCaptionWidth;
-    int     iCaptionHeight;
-    LOGFONT lfCaptionFont;
-    int     iSmCaptionWidth;
-    int     iSmCaptionHeight;
-    LOGFONT lfSmCaptionFont;
-    int     iMenuWidth;
-    int     iMenuHeight;
-    LOGFONT lfMenuFont;
-    LOGFONT lfStatusFont;
-    LOGFONT lfMessageFont;
-    int     iPaddedBorderWidth; // new in Vista
-} ALF_NONCLIENTMETRICS_VISTA;
-
-static inline SIZE_T
-ALF_SizeOf_NONCLIENTMETRICS(void)
-{
-    if (LOBYTE(LOWORD(GetVersion())) >= 6) {
-        return sizeof(ALF_NONCLIENTMETRICS_VISTA);
-    } else {
-        return sizeof(ALF_NONCLIENTMETRICS_VISTA) - sizeof(int);
-    }
-}
+    UINT     cbSize;
+    int      iBorderWidth;
+    int      iScrollWidth;
+    int      iScrollHeight;
+    int      iCaptionWidth;
+    int      iCaptionHeight;
+    LOGFONTW lfCaptionFont;
+    int      iSmCaptionWidth;
+    int      iSmCaptionHeight;
+    LOGFONTW lfSmCaptionFont;
+    int      iMenuWidth;
+    int      iMenuHeight;
+    LOGFONTW lfMenuFont;
+    LOGFONTW lfStatusFont;
+    LOGFONTW lfMessageFont;
+    int      iPaddedBorderWidth; // new in Vista
+} ALF_NONCLIENTMETRICSW_VISTA;
+typedef struct {
+    UINT     cbSize;
+    int      iBorderWidth;
+    int      iScrollWidth;
+    int      iScrollHeight;
+    int      iCaptionWidth;
+    int      iCaptionHeight;
+    LOGFONTA lfCaptionFont;
+    int      iSmCaptionWidth;
+    int      iSmCaptionHeight;
+    LOGFONTA lfSmCaptionFont;
+    int      iMenuWidth;
+    int      iMenuHeight;
+    LOGFONTA lfMenuFont;
+    LOGFONTA lfStatusFont;
+    LOGFONTA lfMessageFont;
+    int      iPaddedBorderWidth; // new in Vista
+} ALF_NONCLIENTMETRICSA_VISTA;
 
 long
 ALF_GetAveCharWidth(HDC hdc);
@@ -75,6 +87,25 @@ typedef struct {
 #define TMT_TRANSITIONDURATION 6000
 #endif
 
+void ALF_LoadCompatFunctions(void);
+void ALF_UnloadCompatFunctions(void);
+
+inline static void
+ALF_Compat_LogFontWtoA(const LOGFONTW *w, LOGFONTA *a)
+{
+    CopyMemory(a, w, sizeof(LOGFONTA) - LF_FACESIZE);
+    WideCharToMultiByte(CP_ACP, 0, w->lfFaceName, -1, a->lfFaceName, LF_FACESIZE, NULL, NULL);
+    a->lfFaceName[LF_FACESIZE - 1] = '\0';
+}
+
+inline static void
+ALF_Compat_LogFontAtoW(const LOGFONTA *a, LOGFONTW *w)
+{
+    CopyMemory(w, a, sizeof(LOGFONTA) - LF_FACESIZE);
+    MultiByteToWideChar(CP_ACP, 0, a->lfFaceName, -1, w->lfFaceName, LF_FACESIZE);
+    w->lfFaceName[LF_FACESIZE - 1] = 0;
+}
+
 extern BOOL (WINAPI *ALF_Compat_IsAppThemed)(void);
 extern UINT (WINAPI *ALF_Compat_GetDpiForWindow)(HWND);
 extern BOOL (WINAPI *ALF_Compat_AdjustWindowRectExForDpi)(LPRECT,DWORD,BOOL,DWORD,UINT);
-- 
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