Disable the page selector when there's only one page

[inkscape.git] / src / gc-anchored.cpp

diff --git a/src/gc-anchored.cpp b/src/gc-anchored.cpp
index 02dff76d435b60f56525fdd11b1460f1ce75b547..3f4cfc12dcf8cbe1a3022882495dbfe451f480f5 100644 (file)
--- a/src/gc-anchored.cpp
+++ b/src/gc-anchored.cpp
@@ -9,12 +9,51 @@
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
 
+#include <typeinfo>
 #include "gc-anchored.h"
+#include "debug/event-tracker.h"
+#include "debug/simple-event.h"
+#include "debug/demangle.h"
+#include "util/share.h"
+#include "util/format.h"
 
 namespace Inkscape {
 
 namespace GC {
 
+namespace {
+
+typedef Debug::SimpleEvent<Debug::Event::REFCOUNT> RefCountEvent;
+
+class BaseAnchorEvent : public RefCountEvent {
+public:
+    BaseAnchorEvent(Anchored const *object, int bias,
+                    Util::ptr_shared<char> name)
+    : RefCountEvent(name)
+    {
+        _addProperty("base", Util::format("%p", Core::base(const_cast<Anchored *>(object))));
+        _addProperty("pointer", Util::format("%p", object));
+        _addProperty("class", Debug::demangle(typeid(*object).name()));
+        _addProperty("new-refcount", Util::format("%d", object->_anchored_refcount() + bias));
+    }
+};
+
+class AnchorEvent : public BaseAnchorEvent {
+public:
+    AnchorEvent(Anchored const *object)
+    : BaseAnchorEvent(object, 1, Util::share_static_string("gc-anchor"))
+    {}
+};
+
+class ReleaseEvent : public BaseAnchorEvent {
+public:
+    ReleaseEvent(Anchored const *object)
+    : BaseAnchorEvent(object, -1, Util::share_static_string("gc-release"))
+    {}
+};
+
+}
+
 Anchored::Anchor *Anchored::_new_anchor() const {
     return new Anchor(this);
 }
@@ -23,6 +62,22 @@ void Anchored::_free_anchor(Anchored::Anchor *anchor) const {
     delete anchor;
 }
 
+void Anchored::anchor() const {
+    Debug::EventTracker<AnchorEvent> tracker(this);
+    if (!_anchor) {
+        _anchor = _new_anchor();
+    }
+    _anchor->refcount++;
+}
+
+void Anchored::release() const {
+    Debug::EventTracker<ReleaseEvent> tracker(this);
+    if (!--_anchor->refcount) {
+        _free_anchor(_anchor);
+        _anchor = NULL;
+    }
+}
+
 }
 
 }