Conversion to new ScriptableImage complete, this affected quite a bit, including the evil thumbnail thread;

Added StyleListener, so style changes are only propagated to interested viewers.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@329 0fc631ac-6414-0410-93d0-97cfa31319b6

src/render/value/image.cpp

@@ -80,6 +80,7 @@ void ImageValueViewer::onValueChange() {
 void ImageValueViewer::onStyleChange() {
 	bitmap = Bitmap();
 	alpha_mask = AlphaMaskP(); // TODO: only reload whatever has changed
+	viewer.redraw(*this);
 }
 
 void ImageValueViewer::loadMask(const Rotation& rot) const {