add SkPaint::getPosTextPath(), with gm to test it

Review URL: https://codereview.appspot.com/6427055

git-svn-id: http://skia.googlecode.com/svn/trunk@4684 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 59 insertions, 0 deletions

diff --git a/gm/getpostextpath.cpp b/gm/getpostextpath.cpp
new file mode 100644
index 0000000000..6ef37caf70
--- /dev/null
+++ b/gm/getpostextpath.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2012 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 "SkPaint.h"
+#include "SkRandom.h"
+
+class GetPosTextPathGM : public skiagm::GM {
+public:
+    GetPosTextPathGM() {}
+
+protected:
+    SkString onShortName() {
+        return SkString("getpostextpath");
+    }
+
+    SkISize onISize() { return skiagm::make_isize(480, 780); }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        const char* text = "Hamburgefons";
+        size_t len = strlen(text);
+
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        paint.setTextSize(SkIntToScalar(48));
+        
+        SkAutoTArray<SkPoint>  pos(len);
+        SkAutoTArray<SkScalar> widths(len);
+        paint.getTextWidths(text, len, &widths[0]);
+        
+        SkRandom rand;
+        SkScalar x = SkIntToScalar(20);
+        SkScalar y = SkIntToScalar(100);
+        for (size_t i = 0; i < len; ++i) {
+            pos[i].set(x, y + rand.nextSScalar1() * 24);
+            x += widths[i];
+        }
+        
+        canvas->drawPosText(text, len, &pos[0], paint);
+        
+        SkPath path;
+        paint.setColor(SK_ColorRED);
+        paint.setStyle(SkPaint::kStroke_Style);
+        paint.getPosTextPath(text, len, &pos[0], &path);
+        canvas->drawPath(path, paint);
+    }
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static skiagm::GM* F(void*) { return new GetPosTextPathGM; }
+
+static skiagm::GMRegistry gR(F);
+