SVG 1.1 Conditional Processing Module rendering support (<switch> element, requiredRe...

[inkscape.git] / src / sp-switch.h

diff --git a/src/sp-switch.h b/src/sp-switch.h
new file mode 100644 (file)
index 0000000..84fc352
--- /dev/null
+++ b/src/sp-switch.h
@@ -0,0 +1,61 @@
+#ifndef __SP_SWITCH_H__
+#define __SP_SWITCH_H__
+
+/*
+ * SVG <switch> implementation
+ *
+ * Authors:
+ *   Andrius R. <knutux@gmail.com>
+ *
+ * Copyright (C) 2006 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "sp-item-group.h"
+
+#define SP_TYPE_SWITCH            (CSwitch::getType())
+#define SP_SWITCH(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), SP_TYPE_SWITCH, SPSwitch))
+#define SP_SWITCH_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), SP_TYPE_SWITCH, SPSwitchClass))
+#define SP_IS_SWITCH(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SP_TYPE_SWITCH))
+#define SP_IS_SWITCH_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), SP_TYPE_SWITCH))
+
+/*
+ * Virtual methods of SPSwitch
+ */
+class CSwitch : public CGroup {
+public:
+    CSwitch(SPGroup *group);
+    virtual ~CSwitch();
+
+    friend class SPSwitch;
+
+    static GType getType();
+    
+    virtual void onChildAdded(Inkscape::XML::Node *child);
+    virtual void onChildRemoved(Inkscape::XML::Node *child);
+    virtual void onOrderChanged(Inkscape::XML::Node *child, Inkscape::XML::Node *old_ref, Inkscape::XML::Node *new_ref);
+    virtual gchar *getDescription();
+
+protected:
+    virtual GSList *_childList(bool add_ref, Action action);
+    virtual void _showChildren (NRArena *arena, NRArenaItem *ai, unsigned int key, unsigned int flags);
+    
+    SPObject *_evaluateFirst();
+    void _reevaluate(bool add_to_arena = false);
+    static void _releaseItem(SPObject *obj, CSwitch *selection);
+    void _releaseLastItem(SPObject *obj);
+
+private:
+    SPObject *_cached_item;
+    gulong _release_handler_id;
+};
+
+struct SPSwitch : public SPGroup {
+    void resetChildEvaluated() { ((CSwitch *)group)->_reevaluate(); }
+};
+
+struct SPSwitchClass : public SPGroupClass {
+};
+
+#endif