+void UpdatableInset::toggleInsetCursor(BufferView *)
+{}
+
+
+void UpdatableInset::showInsetCursor(BufferView *, bool)
+{}
+
+
+void UpdatableInset::hideInsetCursor(BufferView *)
+{}
+
+
+void UpdatableInset::fitInsetCursor(BufferView *) const
+{}
+
+
+void UpdatableInset::edit(BufferView *, int, int, unsigned int)
+{}
+
+
+void UpdatableInset::edit(BufferView *, bool)
+{}
+
+
+void UpdatableInset::draw(BufferView *, LyXFont const &,
+ int /* baseline */, float & x,
+ bool/*cleared*/) const
+{
+ x += float(scx);
+ // ATTENTION: don't do the following here!!!
+ // top_x = int(x);
+ // top_baseline = baseline;
+}
+
+
+void UpdatableInset::scroll(BufferView * bv, float s) const
+{
+ LyXFont font;
+
+ if (!s) {
+ scx = 0;
+ return;
+ }
+
+ int const workW = bv->workWidth();
+ int const tmp_top_x = top_x - scx;
+
+ if (tmp_top_x > 0 &&
+ (tmp_top_x + width(bv, font)) < workW)
+ return;
+ if (s > 0 && top_x > 0)
+ return;
+
+ // int mx_scx=abs((width(bv,font) - bv->workWidth())/2);
+ //int const save_scx = scx;
+
+ scx = int(s * workW / 2);
+ // if (!display())
+ // scx += 20;
+
+ if ((tmp_top_x + scx + width(bv, font)) < (workW / 2)) {
+ scx += (workW / 2) - (tmp_top_x + scx + width(bv, font));
+ }
+
+ // bv->updateInset(const_cast<UpdatableInset *>(this), false);
+}
+
+void UpdatableInset::scroll(BufferView * bv, int offset) const