add SkPath::reverseAddPath()

git-svn-id: http://skia.googlecode.com/svn/trunk@2995 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 133 insertions, 0 deletions

diff --git a/gm/strokefill.cpp b/gm/strokefill.cpp
new file mode 100644
index 0000000000..2e71a368e8
--- /dev/null
+++ b/gm/strokefill.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+#include "SkCanvas.h"
+#include "SkPath.h"
+#include "SkTypeface.h"
+
+static void test10(SkCanvas* canvas) {
+    SkPaint paint;
+    const char text[] = "Hello"; // "Hello";
+    const size_t len = sizeof(text) - 1;
+    paint.setAntiAlias(true);
+    paint.setTextSize(SkIntToScalar(100));
+    SkTypeface* hira = SkTypeface::CreateFromName("Hiragino Maru Gothic Pro",
+                                                  SkTypeface::kNormal);
+    paint.setTypeface(hira);
+    SkScalar x = 180;
+    SkScalar y = 88;
+    
+    canvas->drawText(text, len, x, y, paint);
+    paint.setFakeBoldText(true);
+    canvas->drawText(text, len, x, y + 100, paint);
+    paint.setStyle(SkPaint::kStrokeAndFill_Style);
+    paint.setStrokeWidth(5);
+    
+    SkPath path;
+    path.setFillType(SkPath::kWinding_FillType);
+    path.addCircle(x, y + 200, 50, SkPath::kCW_Direction);
+    path.addCircle(x, y + 200, 40, SkPath::kCCW_Direction);
+    canvas->drawPath(path, paint);
+    
+    SkPath path2;
+    path2.setFillType(SkPath::kWinding_FillType);
+    path2.addCircle(x + 120, y + 200, 50, SkPath::kCCW_Direction);
+    path2.addCircle(x + 120, y + 200, 40, SkPath::kCW_Direction);
+    canvas->drawPath(path2, paint);
+    
+    path2.reset();
+    path2.addCircle(x + 240, y + 200, 50, SkPath::kCCW_Direction);
+    canvas->drawPath(path2, paint);
+    
+    path2.reset();
+    path2.addCircle(x + 360, y + 200, 50, SkPath::kCW_Direction);
+    canvas->drawPath(path2, paint);
+}
+
+static void test_path(SkCanvas* canvas, const SkPath& path) {
+    SkPaint paint;
+    paint.setAntiAlias(true);
+    canvas->drawPath(path, paint);
+    
+    paint.setStyle(SkPaint::kStroke_Style);
+    paint.setColor(SK_ColorRED);
+    canvas->drawPath(path, paint);
+}
+
+static void test_rev(SkCanvas* canvas, const SkPath& path) {
+    test_path(canvas, path);
+
+    SkPath rev;
+    rev.reverseAddPath(path);
+    canvas->save();
+    canvas->translate(150, 0);
+    test_path(canvas, rev);
+    canvas->restore();
+}
+
+static void test_rev(SkCanvas* canvas) {
+    SkRect r = { 10, 10, 100, 60 };
+
+    SkPath path;
+
+    path.addRect(r); test_rev(canvas, path);
+
+    canvas->translate(0, 100);
+    path.offset(20, 20);
+    path.addRect(r); test_rev(canvas, path);
+
+    canvas->translate(0, 100);
+    path.reset();
+    path.moveTo(10, 10); path.lineTo(30, 30);
+    path.addOval(r);
+    r.offset(50, 20);
+    path.addOval(r);
+    test_rev(canvas, path);
+
+    SkPaint paint;
+    paint.setTextSize(SkIntToScalar(100));
+    SkTypeface* hira = SkTypeface::CreateFromName("Hiragino Maru Gothic Pro", SkTypeface::kNormal);
+    SkSafeUnref(paint.setTypeface(hira));
+    path.reset();
+    paint.getTextPath("e", 1, 50, 50, &path);
+    canvas->translate(0, 100);
+    test_rev(canvas, path);
+}
+
+namespace skiagm {
+
+class StrokeFillGM : public GM {
+public:
+    StrokeFillGM() {
+
+    }
+
+protected:
+    virtual SkString onShortName() {
+        return SkString("stroke-fill");
+    }
+
+    virtual SkISize onISize() {
+        return make_isize(640, 480);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) {
+    //    test10(canvas);
+        test_rev(canvas);
+    }
+
+private:
+    typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory(void*) { return new StrokeFillGM; }
+static GMRegistry reg(MyFactory);
+
+}