controls: subclass generic "ALFControl" window

The idea is that the compiler can strip unused controls when linking
statically, but the window class initialization functions blocked that.

1 files changed, 65 insertions, 0 deletions

diff --git a/alf/alfcompat.cpp b/alf/alfcompat.cpp
index ec14b00..12a79f4 100644
--- a/alf/alfcompat.cpp
+++ b/alf/alfcompat.cpp
@@ -356,6 +356,58 @@ ALF_Compat_fallbackGetThemeColor(HTHEME   hTheme,
     return E_NOTIMPL;
 }
 
+static BOOL CALLBACK
+ALF_Compat_DrawDisabledText_DrawStateProc(HDC hdc,
+                                          LPARAM lData,
+                                          WPARAM wData,
+                                          int cx,
+                                          int cy)
+{
+    RECT rc = { 0, 0, cx, cy };
+    DrawText(hdc, (const TCHAR *)lData, -1, &rc, (UINT)wData);
+    return TRUE;
+}
+
+static int
+ALF_Compat_DrawDisabledTextEmbossed(HDC     hdc,
+                                    LPCTSTR lpchText,
+                                    int     cchText,
+                                    LPRECT  lprc,
+                                    UINT    format)
+{
+    (void)cchText;
+    return DrawState(hdc, NULL, ALF_Compat_DrawDisabledText_DrawStateProc,
+                     (LPARAM)lpchText, (WPARAM)format,
+                     lprc->left, lprc->top, lprc->right - lprc->left, lprc->bottom - lprc->top,
+                     DST_COMPLEX | DSS_DISABLED);
+}
+
+static int
+ALF_Compat_DrawDisabledTextSolid(HDC     hdc,
+                                 LPCTSTR lpchText,
+                                 int     cchText,
+                                 LPRECT  lprc,
+                                 UINT    format)
+{
+    COLORREF oldcolor = SetTextColor(hdc, GetSysColor(COLOR_GRAYTEXT));
+    int r = DrawText(hdc, lpchText, cchText, lprc, format);
+    SetTextColor(hdc, oldcolor);
+    return r;
+}
+
+// FIXME! This is how NT 3.x does it, need to figure out how to get the real 16bit look
+static int
+ALF_Compat_DrawDisabledText31(HDC     hdc,
+                              LPCTSTR lpchText,
+                              int     cchText,
+                              LPRECT  lprc,
+                              UINT    format)
+{
+    COLORREF oldcolor = SetTextColor(hdc, GetSysColor(COLOR_BTNSHADOW));
+    int r = DrawText(hdc, lpchText, cchText, lprc, format);
+    SetTextColor(hdc, oldcolor);
+    return r;
+}
 
 
 #define LOAD_FUNC(dll, name) do { \
@@ -413,6 +465,17 @@ void ALF_LoadCompatFunctions(void)
     LOAD_FUNC(uxtheme, GetThemeTransitionDuration);
     LOAD_FUNC(uxtheme, GetThemePartSize);
     LOAD_FUNC(uxtheme, GetThemeColor);
+
+    // initialize helper function for disabled text
+    if (ALF_Compat_IsMinWindowsVersion(4, 0)) {
+        if (GetSystemMetrics(SM_SLOWMACHINE)) {
+            ALF_Compat_DrawDisabledText = ALF_Compat_DrawDisabledTextSolid;
+        } else {
+            ALF_Compat_DrawDisabledText = ALF_Compat_DrawDisabledTextEmbossed;
+        }
+    } else {
+        ALF_Compat_DrawDisabledText = ALF_Compat_DrawDisabledText31;
+    }
 }
 
 void ALF_UnloadCompatFunctions(void)
@@ -448,6 +511,8 @@ void ALF_UnloadCompatFunctions(void)
 #undef LOAD_FUNC
 #undef UNLOAD_FUNC
 
+int (*ALF_Compat_DrawDisabledText)(HDC,LPCTSTR,int,LPRECT,UINT) = NULL;
+
 BOOL (WINAPI *ALF_Compat_IsAppThemed)(void) = NULL;
 UINT (WINAPI *ALF_Compat_GetDpiForWindow)(HWND /*window*/) = NULL;
 BOOL (WINAPI *ALF_Compat_AdjustWindowRectExForDpi)(LPRECT,DWORD,BOOL,DWORD,UINT) = NULL;