added a special thread for making thumbnails (thumb.h thumb.cpp)

git-svn-id: svn://ttmath.org/publicrep/winix/trunk@700 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/config.h

@@ -198,9 +198,21 @@ public:
 	int upload_files_chmod;
 
 	// create a thumbnail from an image
-	// default: false (!!will be true)
+	// default: true
 	bool create_thumb;
 
+	// the mode of creating a thumbnail
+	// width means thumb_cx, height means thumb_cy
+	// 1: Width given, height automagically selected to preserve aspect ratio.
+	// 2: Height given, width automagically selected to preserve aspect ratio.
+	// 3: Maximum values of height and width given, aspect ratio preserved.
+	// 4: Minimum values of width and height given, aspect ratio preserved.
+	// 5: Width and height emphatically given, original aspect ratio ignored.
+	// 6: Change as per widthxheight (3) but only if an image dimension exceeds a specified dimension.
+	// 7: Change dimensions only if both image dimensions are less than specified dimensions.
+	// default: 2
+	int thumb_mode;
+
 	// width of thumbnails
 	// default: 150
 	size_t thumb_cx;
@@ -209,6 +221,10 @@ public:
 	// default: 150
 	size_t thumb_cy;
 
+	// the convert program
+	// default: /usr/local/bin/convert
+	std::wstring convert_cmd;
+
 	// locale: en, pl
 	// default: en
 	std::wstring locale_str;