(svn r21754) -Codechange: Scroll the matrix widget to make a clicked entry fully visible.

src/widget.cpp

@@ -1374,6 +1374,13 @@ void NWidgetMatrix::SetColour(Colours colour)
 void NWidgetMatrix::SetClicked(int clicked)
 {
 	this->clicked = clicked;
+	if (this->sb != NULL && this->widgets_x != 0) {
+		int vpos = (this->clicked / this->widgets_x) * this->widget_h; // Vertical position of the top.
+		/* Need to scroll down -> Scroll to the bottom.
+		 * However, last entry has no 'this->pip_inter' underneath, and we must stay below this->sb->GetCount() */
+		if (this->sb->GetPosition() < vpos) vpos += this->widget_h - this->pip_inter - 1;
+		this->sb->ScrollTowards(vpos);
+	}
 }
 
 /**