Added chr13-optimizations (thanks to Christian Tusche / closes #39)

- increased efficiency in drawing list items in the main menu
- introduce relative Pos and Size of objects to given BasePos, BaseSize
  (used to draw list items)
- increase skin file version to 1.1
- the position of list items is interpreted relative to the "list" container
  when file version >= 1.1
- when a position is specified for "block" elements, the position of all
  contained elements is interpreted relative to the container position
- selective update of changed objects
  refresh can be controlled for individual objects by the attributes
  "refresh" and "changed"
  default behaviour is to redraw everything (compatible with old skins)
- moved state tracking of marquee, blink, scroll from cText2SkinRender
  to cxObject
- fixed use of Update.Lock() in render.h
- new: dynamic width/height of objects
- new: Option "bgColor" used for items "Text", "Marquee", and "Blink".
- remember period to next timeout when doing a non-timeout refresh
  prevent occasional start/stop of marquee-text

1 files changed, 42 insertions, 3 deletions

diff --git a/xml/skin.h b/xml/skin.h
index e27f87e..49656ea 100644
--- a/xml/skin.h
+++ b/xml/skin.h
@@ -15,6 +15,45 @@
 class cText2SkinI18n;
 class cText2SkinTheme;
 
+class cxVersion {
+public:
+	cxVersion(int ma = 0, int min = 0);
+	bool Parse(const std::string &Text);
+	int Major(void) const { return mMajor; }
+	int Minor(void) const { return mMinor; }
+	bool Require(int ma, int min) const {
+		return mMajor > ma ? true : (mMajor == ma ? mMinor >= min : false);
+	}
+	bool Limit(int ma, int min) const {
+		return mMajor < ma ? true : (mMajor == ma ? mMinor <= min : false);
+	}
+	bool operator==(const cxVersion &v) const {
+		return mMajor == v.mMajor && mMinor == v.mMinor;
+	}
+	bool operator>=(const cxVersion &v) const {
+		return Require(v.mMajor, v.mMinor);
+	}
+	bool operator>=(const char *c) const {
+		cxVersion v;
+		if (!v.Parse(c))
+			return false;
+		return Require(v.mMajor, v.mMinor);
+	}
+	bool operator<=(const cxVersion &v) const {
+		return Limit(v.mMajor, v.mMinor);
+	}
+	bool operator<=(const char *c) const {
+		cxVersion v;
+		if (!v.Parse(c))
+			return false;
+		return Limit(v.mMajor, v.mMinor);
+	}
+
+private:
+	int mMajor;
+	int mMinor;
+};
+
 class cxSkin {
 	friend bool xStartElem(const std::string &name, std::map<std::string,std::string> &attrs);
 	friend bool xEndElem(const std::string &name);
@@ -35,8 +74,8 @@ private:
 	txSize           mBaseSize;
 	std::string      mName;
 	std::string      mTitle;
-	std::string      mVersion;
-	
+	cxVersion        mVersion;
+
 	cxDisplays       mDisplays;
 	
 	cText2SkinI18n  *mI18n; // TODO: should move here completely
@@ -55,7 +94,7 @@ public:
 	const txSize      &BaseSize(void)   const { return mBaseSize; }
 	const std::string &Name(void)       const { return mName; }
 	const std::string &Title(void)      const { return mTitle; }
-	const std::string &Version(void)    const { return mVersion; }
+	const cxVersion   &Version(void)    const { return mVersion; }
 
 	// functions for object classes to obtain dynamic item information
 	std::string        Translate(const std::string &Text);