1 files changed, 99 insertions, 0 deletions
diff --git a/source/blender/editors/curve/editfont_undo.c b/source/blender/editors/curve/editfont_undo.c
new file mode 100644
index 00000000000..cee10698039
--- /dev/null
+++ b/source/blender/editors/curve/editfont_undo.c
@@ -0,0 +1,99 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/editors/curve/editfont_undo.c
+ *  \ingroup edcurve
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_utildefines.h"
+
+#include "DNA_curve_types.h"
+#include "DNA_object_types.h"
+#include "DNA_scene_types.h"
+
+#include "BKE_context.h"
+#include "BKE_font.h"
+
+#include "ED_curve.h"
+#include "ED_util.h"
+
+/* TODO, remove */
+#define MAXTEXT 32766
+
+static void undoFont_to_editFont(void *strv, void *ecu, void *UNUSED(obdata))
+{
+	Curve *cu = (Curve *)ecu;
+	EditFont *ef = cu->editfont;
+	const char *str = strv;
+
+	ef->pos = *((const short *)str);
+	ef->len = *((const short *)(str + 2));
+
+	memcpy(ef->textbuf, str + 4, (ef->len + 1) * sizeof(wchar_t));
+	memcpy(ef->textbufinfo, str + 4 + (ef->len + 1) * sizeof(wchar_t), ef->len * sizeof(CharInfo));
+
+	ef->selstart = ef->selend = 0;
+
+}
+
+static void *editFont_to_undoFont(void *ecu, void *UNUSED(obdata))
+{
+	Curve *cu = (Curve *)ecu;
+	EditFont *ef = cu->editfont;
+	char *str;
+
+	/* The undo buffer includes [MAXTEXT+6]=actual string and [MAXTEXT+4]*sizeof(CharInfo)=charinfo */
+	str = MEM_callocN((MAXTEXT + 6) * sizeof(wchar_t) + (MAXTEXT + 4) * sizeof(CharInfo), "string undo");
+
+	/* Copy the string and string information */
+	memcpy(str + 4, ef->textbuf, (ef->len + 1) * sizeof(wchar_t));
+	memcpy(str + 4 + (ef->len + 1) * sizeof(wchar_t), ef->textbufinfo, ef->len * sizeof(CharInfo));
+
+	*((short *)(str + 0)) = ef->pos;
+	*((short *)(str + 2)) = ef->len;
+
+	return str;
+}
+
+static void free_undoFont(void *strv)
+{
+	MEM_freeN(strv);
+}
+
+static void *get_undoFont(bContext *C)
+{
+	Object *obedit = CTX_data_edit_object(C);
+	if (obedit && obedit->type == OB_FONT) {
+		return obedit->data;
+	}
+	return NULL;
+}
+
+/* and this is all the undo system needs to know */
+void undo_push_font(bContext *C, const char *name)
+{
+	undo_editmode_push(C, name, get_undoFont, free_undoFont, undoFont_to_editFont, editFont_to_undoFont, NULL);
+}