1 files changed, 134 insertions, 0 deletions
diff --git a/src/svg/svg-angle.cpp b/src/svg/svg-angle.cpp
new file mode 100644
index 0000000..0e4af4f
--- /dev/null
+++ b/src/svg/svg-angle.cpp
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ *  \file src/svg/svg-angle.cpp
+ *  \brief SVG angle type
+ */
+/*
+ * Authors:
+ *   Tomasz Boczkowski <penginsbacon@gmail.com>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+#include <glib.h>
+
+#include "svg/svg-angle.h"
+#include "util/units.h"
+
+
+static bool sp_svg_angle_read_lff(gchar const *str, SVGAngle::Unit &unit, float &val, float &computed);
+
+SVGAngle::SVGAngle()
+    : _set(false)
+    , unit(Unit::NONE)
+    , value(0)
+    , computed(0)
+{
+}
+
+/* Angle */
+
+bool SVGAngle::read(gchar const *str)
+{
+    if (!str) {
+        return false;
+    }
+
+    SVGAngle::Unit u;
+    float v;
+    float c;
+    if (!sp_svg_angle_read_lff(str, u, v, c)) {
+        return false;
+    }
+
+    _set = true;
+    unit = u;
+    value = v;
+    computed = c;
+
+    return true;
+}
+
+void SVGAngle::unset(SVGAngle::Unit u, float v, float c) {
+    _set = false;
+    unit = u;
+    value = v;
+    computed = c;
+}
+
+void SVGAngle::readOrUnset(gchar const *str, Unit u, float v, float c) {
+    if (!read(str)) {
+        unset(u, v, c);
+    }
+}
+
+static bool sp_svg_angle_read_lff(gchar const *str, SVGAngle::Unit &unit, float &val, float &computed)
+{
+    if (!str) {
+        return false;
+    }
+
+    gchar const *e;
+    float const v = g_ascii_strtod(str, (char **) &e);
+    if (e == str) {
+        return false;
+    }
+
+    if (!e[0]) {
+        /* Unitless (defaults to degrees)*/
+        unit = SVGAngle::Unit::NONE;
+        val = v;
+        computed = v;
+        return true;
+    } else if (!g_ascii_isalnum(e[0])) {
+        if (g_ascii_isspace(e[0]) && e[1] && g_ascii_isalpha(e[1])) {
+            return false; // spaces between value and unit are not allowed
+        } else {
+            /* Unitless (defaults to degrees)*/
+            unit = SVGAngle::Unit::NONE;
+            val = v;
+            computed = v;
+            return true;
+        }
+    } else {
+        if (strncmp(e, "deg", 3) == 0) {
+            unit = SVGAngle::Unit::DEG;
+            val = v;
+            computed = v;
+        } else if (strncmp(e, "grad", 4) == 0) {
+            unit = SVGAngle::Unit::GRAD;
+            val = v;
+            computed = Inkscape::Util::Quantity::convert(v, "grad", "°");
+        } else if (strncmp(e, "rad", 3) == 0) {
+            unit = SVGAngle::Unit::RAD;
+            val = v;
+            computed = Inkscape::Util::Quantity::convert(v, "rad", "°");
+        } else if (strncmp(e, "turn", 4) == 0) {
+            unit = SVGAngle::Unit::TURN;
+            val = v;
+            computed = Inkscape::Util::Quantity::convert(v, "turn", "°");
+        } else {
+            return false;
+        }
+        return true;
+    }
+
+    /* Invalid */
+    return false;
+}
+
+/*
+  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:fileencoding=utf-8:textwidth=99 :