1 files changed, 78 insertions, 0 deletions
diff --git a/third_party/spiro/ppedit/bezctx_quartz.c b/third_party/spiro/ppedit/bezctx_quartz.c
new file mode 100644
index 0000000..f04e0bc
--- /dev/null
+++ b/third_party/spiro/ppedit/bezctx_quartz.c
@@ -0,0 +1,78 @@
+/*
+ppedit - A pattern plate editor for Spiro splines.
+Copyright (C) 2007 Raph Levien
+
+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.
+
+*/
+#include <Carbon/Carbon.h>
+
+#include "zmisc.h"
+#include "bezctx.h"
+#include "bezctx_quartz.h"
+
+
+typedef struct {
+    bezctx base;
+    CGMutablePathRef pathref;
+    int is_open;
+} bezctx_quartz;
+
+static void
+bezctx_quartz_moveto(bezctx *z, double x, double y, int is_open) {
+    bezctx_quartz *bc = (bezctx_quartz *)z;
+    if (!bc->is_open) CGPathCloseSubpath(bc->pathref);
+    CGPathMoveToPoint(bc->pathref, NULL, x, y);
+    bc->is_open = is_open;
+}
+
+static void
+bezctx_quartz_lineto(bezctx *z, double x, double y) {
+    bezctx_quartz *bc = (bezctx_quartz *)z;
+    CGPathAddLineToPoint(bc->pathref, NULL, x, y);
+}
+
+static void
+bezctx_quartz_quadto(bezctx *z, double x1, double y1, double x2, double y2)
+{
+    bezctx_quartz *bc = (bezctx_quartz *)z;
+    CGPathAddQuadCurveToPoint(bc->pathref, NULL, x1, y1, x2, y2);
+}
+
+bezctx *
+new_bezctx_quartz(void) {
+    bezctx_quartz *result = znew(bezctx_quartz, 1);
+
+    result->base.moveto = bezctx_quartz_moveto;
+    result->base.lineto = bezctx_quartz_lineto;
+    result->base.quadto = bezctx_quartz_quadto;
+    result->base.mark_knot = NULL;
+    result->pathref = CGPathCreateMutable();
+    result->is_open = 1;
+    return &result->base;
+}
+
+
+CGMutablePathRef
+bezctx_to_quartz(bezctx *z)
+{
+    bezctx_quartz *bc = (bezctx_quartz *)z;
+    CGMutablePathRef result = bc->pathref;
+
+    if (!bc->is_open) CGPathCloseSubpath(result);
+    zfree(bc);
+    return result;
+}