Load, validate and retrieve a few properties from an msstyles theme.

dlls/uxtheme/Makefile.in

@@ -3,13 +3,14 @@ TOPOBJDIR = ../..
 SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 MODULE    = uxtheme.dll
-IMPORTS   = gdi32 user32 advapi32 kernel32 ntdll
+IMPORTS   = shlwapi user32 gdi32 advapi32 kernel32 ntdll
 EXTRALIBS = $(LIBUNICODE)
 
 C_SRCS = \
 	draw.c \
 	main.c \
 	metric.c \
+	msstyles.c \
 	property.c \
 	system.c
 

dlls/uxtheme/msstyles.c

+/*
+ * Win32 5.1 msstyles theme format
+ *
+ * Copyright (C) 2003 Kevin Koltzau
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config.h"
+
+#include <stdarg.h>
+
+#include "windef.h"
+#include "winbase.h"
+#include "winuser.h"
+#include "wingdi.h"
+#include "uxtheme.h"
+
+#include "uxthemedll.h"
+#include "msstyles.h"
+
+#include "wine/debug.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(uxtheme);
+
+#define MSSTYLES_VERSION 0x0003
+
+/**********************************************************************
+ *      MSSTYLES_OpenThemeFile
+ *
+ * Load and validate a theme
+ *
+ * PARAMS
+ *     lpThemeFile         Path to theme file to load
+ *     pszColorName        Color name wanted, can be NULL
+ *     pszSizeName         Size name wanted, can be NULL
+ *
+ * NOTES
+ * If pszColorName or pszSizeName are NULL, the default color/size will be used.
+ * If one/both are provided, they are validated against valid color/sizes and if
+ * a match is not found, the function fails.
+ */
+HRESULT MSSTYLES_OpenThemeFile(LPCWSTR lpThemeFile, LPCWSTR pszColorName, LPCWSTR pszSizeName, PTHEME_FILE *tf)
+{
+    HMODULE hTheme;
+    HRSRC hrsc;
+    HRESULT hr = S_OK;
+    WCHAR szPackThemVersionResource[] = {
+        'P','A','C','K','T','H','E','M','_','V','E','R','S','I','O','N', '\0'
+    };
+    WCHAR szColorNamesResource[] = {
+        'C','O','L','O','R','N','A','M','E','S','\0'
+    };
+    WCHAR szSizeNamesResource[] = {
+        'S','I','Z','E','N','A','M','E','S','\0'
+    };
+
+    WORD version;
+    DWORD versize;
+    LPWSTR pszColors;
+    LPWSTR pszSelectedColor = NULL;
+    LPWSTR pszSizes;
+    LPWSTR pszSelectedSize = NULL;
+    LPWSTR tmp;
+
+    TRACE("Opening %s\n", debugstr_w(lpThemeFile));
+
+    hTheme = LoadLibraryExW(lpThemeFile, NULL, LOAD_LIBRARY_AS_DATAFILE);
+
+    /* Validate that this is really a theme */
+    if(!hTheme) goto invalid_theme;
+    if(!(hrsc = FindResourceW(hTheme, MAKEINTRESOURCEW(1), szPackThemVersionResource))) {
+        TRACE("No version resource found\n");
+        goto invalid_theme;
+    }
+    if((versize = SizeofResource(hTheme, hrsc)) != 2)
+    {
+        TRACE("Version resource found, but wrong size: %ld\n", versize);
+        goto invalid_theme;
+    }
+    version = *(WORD*)LoadResource(hTheme, hrsc);
+    if(version != MSSTYLES_VERSION)
+    {
+        TRACE("Version of theme file is unsupported: 0x%04x\n", version);
+        goto invalid_theme;
+    }
+
+    if(!(hrsc = FindResourceW(hTheme, MAKEINTRESOURCEW(1), szColorNamesResource))) {
+        TRACE("Color names resource not found\n");
+        goto invalid_theme;
+    }
+    pszColors = (LPWSTR)LoadResource(hTheme, hrsc);
+
+    if(!(hrsc = FindResourceW(hTheme, MAKEINTRESOURCEW(1), szSizeNamesResource))) {
+        TRACE("Size names resource not found\n");
+        goto invalid_theme;
+    }
+    pszSizes = (LPWSTR)LoadResource(hTheme, hrsc);
+
+    /* Validate requested color against whats available from the theme */
+    if(pszColorName) {
+        tmp = pszColors;
+        while(*tmp) {
+            if(!lstrcmpiW(pszColorName, tmp)) {
+                pszSelectedColor = tmp;
+                break;
+            }
+            tmp += lstrlenW(tmp)+1;
+        }
+    }
+    else
+        pszSelectedColor = pszColors; /* Use the default color */
+
+    /* Validate requested size against whats available from the theme */
+    if(pszSizeName) {
+        tmp = pszSizes;
+        while(*tmp) {
+            if(!lstrcmpiW(pszSizeName, tmp)) {
+                pszSelectedSize = tmp;
+                break;
+            }
+            tmp += lstrlenW(tmp)+1;
+        }
+    }
+    else
+        pszSelectedSize = pszSizes; /* Use the default size */
+
+    if(!pszSelectedColor || !pszSelectedSize) {
+        TRACE("Requested color/size (%s/%s) not found in theme\n",
+              debugstr_w(pszColorName), debugstr_w(pszSizeName));
+        hr = E_PROP_ID_UNSUPPORTED;
+        goto invalid_theme;
+    }
+
+    *tf = HeapAlloc(GetProcessHeap(), 0, sizeof(THEME_FILE));
+    (*tf)->hTheme = hTheme;
+    (*tf)->pszAvailColors = pszColors;
+    (*tf)->pszAvailSizes = pszSizes;
+    (*tf)->pszSelectedColor = pszSelectedColor;
+    (*tf)->pszSelectedSize = pszSelectedSize;
+    return S_OK;
+
+invalid_theme:
+    if(hTheme) FreeLibrary(hTheme);
+    if(!hr) hr = HRESULT_FROM_WIN32(GetLastError());
+    return hr;
+}
+
+/***********************************************************************
+ *      MSSTYLES_CloseThemeFile
+ *
+ * Close theme file and free resources
+ */
+void MSSTYLES_CloseThemeFile(PTHEME_FILE tf)
+{
+    if(tf) {
+        if(tf->hTheme) FreeLibrary(tf->hTheme);
+        HeapFree(GetProcessHeap(), 0, tf);
+    }
+}

dlls/uxtheme/msstyles.h

+/*
+ * Internal msstyles related defines & declarations
+ *
+ * Copyright (C) 2003 Kevin Koltzau
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __WINE_MSSTYLES_H
+#define __WINE_MSSTYLES_H
+
+typedef struct _THEME_FILE {
+    HMODULE hTheme;
+    LPWSTR pszAvailColors;
+    LPWSTR pszAvailSizes;
+
+    LPWSTR pszSelectedColor;
+    LPWSTR pszSelectedSize;
+} THEME_FILE, *PTHEME_FILE;
+
+HRESULT MSSTYLES_OpenThemeFile(LPCWSTR lpThemeFile, LPCWSTR pszColorName, LPCWSTR pszSizeName, PTHEME_FILE *tf);
+void MSSTYLES_CloseThemeFile(PTHEME_FILE tf);
+
+
+#endif