add SVG::PathString for better path building

(bzr r2267)

2 files changed, 153 insertions, 0 deletions

diff --git a/src/svg/Makefile_insert b/src/svg/Makefile_insert
index 410fe7ba0..5c723dfac 100644
--- a/src/svg/Makefile_insert
+++ b/src/svg/Makefile_insert
@@ -19,6 +19,7 @@ svg_libspsvg_a_SOURCES =	\
 	svg/gnome-canvas-bpath-util.cpp	\
 	svg/gnome-canvas-bpath-util.h	\
 	svg/itos.cpp	\
+	svg/path-string.h	\
 	svg/round.cpp	\
 	svg/stringstream.h	\
 	svg/stringstream.cpp	\
diff --git a/src/svg/path-string.h b/src/svg/path-string.h
new file mode 100644
index 000000000..3139466ef
--- /dev/null
+++ b/src/svg/path-string.h
@@ -0,0 +1,152 @@
+/*
+ * Inkscape::SVG::PathString - builder for SVG path strings
+ *
+ * Copyright 2007 MenTaLguY <mental@rydia.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.
+ *
+ * See the file COPYING for details.
+ *
+ */
+
+#ifndef SEEN_INKSCAPE_SVG_PATH_STRING_H
+#define SEEN_INKSCAPE_SVG_PATH_STRING_H
+
+#include <glibmm/ustring.h>
+#include "libnr/nr-point.h"
+#include "svg/stringstream.h"
+
+namespace Inkscape {
+
+namespace SVG {
+
+class PathString {
+public:
+    PathString() {}
+
+    // default copy
+    // default assign
+
+    Glib::ustring const &ustring() const {
+        return _str;
+    }
+
+    operator Glib::ustring const &() const {
+        return ustring();
+    }
+
+    char const *c_str() const {
+        return _str.c_str();
+    }
+
+    PathString &moveTo(NR::Coord x, NR::Coord y) {
+        return moveTo(NR::Point(x, y));
+    }
+
+    PathString &moveTo(NR::Point p) {
+        _appendOp('M');
+        _append(p);
+        return *this;
+    }
+
+    PathString &lineTo(NR::Coord x, NR::Coord y) {
+        return lineTo(NR::Point(x, y));
+    }
+
+    PathString &lineTo(NR::Point p) {
+        _appendOp('L');
+        _append(p);
+        return *this;
+    }
+
+    PathString &quadTo(NR::Coord cx, NR::Coord cy, NR::Coord x, NR::Coord y) {
+        return quadTo(NR::Point(cx, cy), NR::Point(x, y));
+    }
+
+    PathString &quadTo(NR::Point c, NR::Point p) {
+        _appendOp('Q');
+        _append(c);
+        _append(p);
+        return *this;
+    }
+
+    PathString &curveTo(NR::Coord x0, NR::Coord y0,
+                        NR::Coord x1, NR::Coord y1,
+                        NR::Coord x,  NR::Coord y)
+    {
+        return curveTo(NR::Point(x0, y0), NR::Point(x1, y1), NR::Point(x, y));
+    }
+    
+
+    PathString &curveTo(NR::Point c0, NR::Point c1, NR::Point p) {
+        _appendOp('C');
+        _append(c0);
+        _append(c1);
+        _append(p);
+        return *this;
+    }
+
+    PathString &arcTo(NR::Coord rx, NR::Coord ry, NR::Coord rot,
+                      bool large_arc, bool sweep,
+                      NR::Point p)
+    {
+        _appendOp('A');
+        _append(NR::Point(rx, ry));
+        _append(rot);
+        _append(large_arc);
+        _append(sweep);
+        _append(p);
+        return *this;
+    }
+
+    PathString &closePath() {
+      _appendOp('z');
+      return *this;
+    }
+
+private:
+    void _appendOp(char op) {
+        if (!_str.empty()) {
+          _str.append(1, ' ');
+        }
+        _str.append(1, op);
+    }
+
+    void _append(bool flag) {
+        _str.append(1, ' ');
+        _str.append(1, ( flag ? '1' : '0' ));
+    }
+
+    void _append(NR::Coord v) {
+        SVGOStringStream os;
+        os << ' ' << v;
+        _str.append(os.str());
+    }
+
+    void _append(NR::Point p) {
+        SVGOStringStream os;
+        os << ' ' << p[NR::X] << ',' << p[NR::Y];
+        _str.append(os.str());
+    }
+
+    Glib::ustring _str;
+};
+
+}
+
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :