add SkParsePath to go to/from SVG strings (e.g. "M0,0 L10,20")

git-svn-id: http://skia.googlecode.com/svn/trunk@203 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 58 insertions, 0 deletions

diff --git a/tests/ParsePathTest.cpp b/tests/ParsePathTest.cpp
new file mode 100644
index 0000000000..917b0cb538
--- /dev/null
+++ b/tests/ParsePathTest.cpp
@@ -0,0 +1,58 @@
+#include "Test.h"
+#include "SkParsePath.h"
+
+static void test_to_from(skiatest::Reporter* reporter, const SkPath& path) {
+    SkString str, str2;
+    SkParsePath::ToSVGString(path, &str);
+
+    SkPath path2;
+    bool success = SkParsePath::FromSVGString(str.c_str(), &path2);
+    REPORTER_ASSERT(reporter, success);
+
+    SkParsePath::ToSVGString(path2, &str2);
+    REPORTER_ASSERT(reporter, str == str2);
+#if 0 // closed paths are not equal, the iter explicitly gives the closing
+      // edge, even if it is not in the path.
+    REPORTER_ASSERT(reporter, path == path2);
+    if (path != path2) {
+        SkDebugf("str1=%s\nstr2=%s\n", str.c_str(), str2.c_str());
+    }
+#endif
+}
+
+static void TestParsePath(skiatest::Reporter* reporter) {
+    static const struct {
+        const char* fStr;
+        SkRect      fBounds;
+    } gRec[] = {
+        { "", { 0, 0, 0, 0 } },
+        { "M0,0L10,10", { 0, 0, SkIntToScalar(10), SkIntToScalar(10) } },
+        { "M-5.5,-0.5 Q 0 0 6,6.50",
+            { SkFloatToScalar(-5.5f), SkFloatToScalar(-0.5f),
+              SkFloatToScalar(6), SkFloatToScalar(6.5f) } }
+    };
+    
+    for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); i++) {
+        SkPath  path;
+        bool success = SkParsePath::FromSVGString(gRec[i].fStr, &path);
+        REPORTER_ASSERT(reporter, success);
+        const SkRect& expectedBounds = gRec[i].fBounds;
+        const SkRect& pathBounds = path.getBounds();
+        REPORTER_ASSERT(reporter, expectedBounds == pathBounds);
+
+        test_to_from(reporter, path);
+    }
+    
+    SkRect r;
+    r.set(0, 0, SkFloatToScalar(10), SkFloatToScalar(10.5));
+    SkPath p;
+    p.addRect(r);
+    test_to_from(reporter, p);
+    p.addOval(r);
+    test_to_from(reporter, p);
+    p.addRoundRect(r, SkFloatToScalar(4), SkFloatToScalar(4.5));
+    test_to_from(reporter, p);
+}
+
+#include "TestClassDef.h"
+DEFINE_TESTCLASS("ParsePath", ParsePathClass, TestParsePath)