The speed patch: redraw only rows that have changed

[lyx.git] / src / insets / render_base.h

diff --git a/src/insets/render_base.h b/src/insets/render_base.h
index 0ca610723a3ac967ee9c6586d56ea8579c4b7e0a..ba9221fbf70830cd9023afeb45692d7d8b62a3b4 100644 (file)
--- a/src/insets/render_base.h
+++ b/src/insets/render_base.h
@@ -14,6 +14,9 @@
 
 #include "dimension.h"
 
+#include <memory>
+
+class InsetBase;
 class MetricsInfo;
 class PainterInfo;
 
@@ -26,7 +29,7 @@ class RenderBase {
 public:
        virtual ~RenderBase() {}
 
-       virtual RenderBase * clone() const = 0;
+       virtual std::auto_ptr<RenderBase> clone(InsetBase const *) const = 0;
 
        /// compute the size of the object returned in dim
        virtual void metrics(MetricsInfo & mi, Dimension & dim) const = 0;
@@ -42,7 +45,7 @@ public:
 protected:
        RenderBase() {}
        RenderBase(RenderBase const &) {}
-       void operator=(RenderBase const &) {}
+       RenderBase & operator=(RenderBase const &) { return *this; }
 
        /// Cached
        mutable Dimension dim_;