Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / cinelerra / mainundo.h

diff --git a/cinelerra-5.1/cinelerra/mainundo.h b/cinelerra-5.1/cinelerra/mainundo.h
new file mode 100644 (file)
index 0000000..896db1b
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/mainundo.h
@@ -0,0 +1,85 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#ifndef MAINUNDO_H
+#define MAINUNDO_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+#include "bctimer.inc"
+#include "filexml.inc"
+#include "mwindow.inc"
+#include "undostack.inc"
+
+
+class MainUndo
+{
+public:
+       MainUndo(MWindow *mwindow);
+       ~MainUndo();
+
+
+
+
+// For tweeking operations:
+// If a pair of update_undo_before and update_undo_after are called
+// within a certain time limit and the creator is nonzero and equal,
+// the before undo is discarded and the previous after undo is replaced.
+       void update_undo_before(const char *description = "", 
+               void *creator = 0);
+       void update_undo_after(const char *description, 
+               uint32_t load_flags,
+               int changes_made = 1);
+
+// Used in undo and redo to reset the creators in all the records.
+       void reset_creators();
+
+       int undo();
+       int redo();
+
+       void dump(FILE *fp=stdout);
+private:
+// Entry point for all update commands
+       void update_undo_entry(const char *description, 
+               uint32_t load_flags, 
+               void *creator, 
+               int changes_made);
+       int load_from_undo(FileXML *file, uint32_t load_flags);    
+
+// Placing the before & after undo operations in the same stack makes the
+// compression more efficient.
+// So even numbers are before and odd numbers are after
+       UndoStack *undo_stack;
+
+
+
+
+// loads undo from the stringfile to the project
+       int load_undo_before(FileXML *file, uint32_t load_flags);    
+       int load_undo_after(FileXML *file, uint32_t load_flags);    
+
+
+       MWindow *mwindow;
+       Timer *last_update;
+};
+
+#endif