1 files changed, 275 insertions, 0 deletions
diff --git a/chromium/third_party/skia/gm/poly2poly.cpp b/chromium/third_party/skia/gm/poly2poly.cpp
new file mode 100644
index 00000000000..9e58d9d0369
--- /dev/null
+++ b/chromium/third_party/skia/gm/poly2poly.cpp
@@ -0,0 +1,275 @@
+/*
+ * 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"
+
+class SkJSCanvas {
+public:
+    SkJSCanvas(SkCanvas* target);
+    ~SkJSCanvas();
+
+    void save();
+    void restore();
+
+    double lineWidth;
+    void setLineWidth(double);
+
+    void beginPath();
+    void moveTo(double x, double y);
+    void lineTo(double x, double y);
+    void closePath();
+
+    void fill();
+    void stroke();
+
+    void fillText(const char text[], double x, double y);
+
+private:
+    SkCanvas*   fTarget;
+    SkPaint     fFillPaint;
+    SkPaint     fStrokePaint;
+    SkPath      fPath;
+};
+
+SkJSCanvas::SkJSCanvas(SkCanvas* target) : fTarget(target) {
+    fFillPaint.setAntiAlias(true);
+    fStrokePaint.setAntiAlias(true);
+    fStrokePaint.setStyle(SkPaint::kStroke_Style);
+    fStrokePaint.setStrokeWidth(SK_Scalar1);
+}
+
+SkJSCanvas::~SkJSCanvas() {}
+
+void SkJSCanvas::save() { fTarget->save(); }
+void SkJSCanvas::restore() { fTarget->restore(); }
+
+void SkJSCanvas::beginPath() { fPath.reset(); }
+void SkJSCanvas::moveTo(double x, double y) {
+    fPath.moveTo(SkDoubleToScalar(x), SkDoubleToScalar(y));
+}
+
+void SkJSCanvas::lineTo(double x, double y) {
+    fPath.lineTo(SkDoubleToScalar(x), SkDoubleToScalar(y));
+}
+
+void SkJSCanvas::closePath() { fPath.close(); }
+
+void SkJSCanvas::fill() {
+    fTarget->drawPath(fPath, fFillPaint);
+}
+
+void SkJSCanvas::stroke() {
+    fStrokePaint.setStrokeWidth(SkDoubleToScalar(lineWidth));
+    fTarget->drawPath(fPath, fStrokePaint);
+}
+
+void SkJSCanvas::fillText(const char text[], double x, double y) {
+    fTarget->drawText(text, strlen(text),
+                      SkDoubleToScalar(x), SkDoubleToScalar(y), fFillPaint);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+static void dump(const SkPath& path) {
+    const SkRect& r = path.getBounds();
+    SkDebugf("isEmpty %d, bounds [%g %g %g %g]\n", path.isEmpty(),
+             r.fLeft, r.fTop, r.fRight, r.fBottom);
+}
+
+static void test_stroke(SkCanvas* canvas) {
+    if (true) {
+        SkPath path;
+        dump(path);
+        path.reset(); path.moveTo(0, 0);
+        dump(path);
+        path.reset(); path.moveTo(100, 100);
+        dump(path);
+        path.reset(); path.moveTo(0, 0); path.moveTo(100, 100);
+        dump(path);
+        path.reset(); path.moveTo(0, 0); path.lineTo(100, 100);
+        dump(path);
+        path.reset(); path.moveTo(0, 0); path.lineTo(100, 100); path.moveTo(200, 200);
+        dump(path);
+    }
+
+#if 0
+    // TEST 1 - The rectangle as it's expected to look
+    var canvas = document.createElement('canvas');
+    document.body.appendChild(canvas);
+    var ctx = canvas.getContext("2d");
+#else
+    SkJSCanvas ctx(canvas);
+#endif
+
+    ctx.save();
+    ctx.lineWidth = 2;
+    ctx.beginPath();
+    ctx.moveTo(10, 100);
+    ctx.lineTo(150, 100);
+    ctx.lineTo(150, 15);
+    ctx.lineTo(10, 15);
+    ctx.closePath();
+
+    // no extra moveTo here
+    // ctx.moveTo(175, 125);
+
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.fillText("As Expected", 10, 10);
+
+#if 0
+    // TEST 2 - Includes an extra moveTo call before stroke; the rectangle appears larger
+    canvas = document.createElement('canvas');
+    document.body.appendChild(canvas);
+    ctx = canvas.getContext("2d");
+#else
+    canvas->translate(200, 0);
+#endif
+
+    ctx.save();
+    ctx.lineWidth = 2;
+    ctx.beginPath();
+    ctx.moveTo(10, 100);
+    ctx.lineTo(150, 100);
+    ctx.lineTo(150, 15);
+    ctx.lineTo(10, 15);
+    ctx.closePath();
+
+    ctx.moveTo(175, 125);
+
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.fillText("Larger Rectangle", 10, 10);
+
+#if 0
+    // TEST 3 - Identical to test 2 except the line width is 1
+    canvas = document.createElement('canvas');
+    document.body.appendChild(canvas);
+    ctx = canvas.getContext("2d");
+#else
+    canvas->translate(200, 0);
+#endif
+
+    ctx.save();
+    ctx.lineWidth = 1;
+    ctx.beginPath();
+    ctx.moveTo(10, 100);
+    ctx.lineTo(150, 100);
+    ctx.lineTo(150, 15);
+    ctx.lineTo(10, 15);
+    ctx.closePath();
+
+    ctx.moveTo(175, 125);
+
+    ctx.stroke();
+    ctx.restore();
+
+    ctx.fillText("As Expected - line width 1", 10, 10);
+}
+
+class Poly2PolyGM : public skiagm::GM {
+public:
+    Poly2PolyGM() {}
+
+protected:
+    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+        return kSkipTiled_Flag;
+    }
+
+    virtual SkString onShortName() SK_OVERRIDE {
+        return SkString("poly2poly");
+    }
+
+    virtual SkISize onISize() SK_OVERRIDE {
+        return SkISize::Make(835, 840);
+    }
+
+    static void doDraw(SkCanvas* canvas, SkPaint* paint, const int isrc[],
+                       const int idst[], int count) {
+        SkMatrix matrix;
+        SkPoint src[4], dst[4];
+
+        for (int i = 0; i < count; i++) {
+            src[i].set(SkIntToScalar(isrc[2*i+0]), SkIntToScalar(isrc[2*i+1]));
+            dst[i].set(SkIntToScalar(idst[2*i+0]), SkIntToScalar(idst[2*i+1]));
+        }
+
+        canvas->save();
+        matrix.setPolyToPoly(src, dst, count);
+        canvas->concat(matrix);
+
+        paint->setColor(SK_ColorGRAY);
+        paint->setStyle(SkPaint::kStroke_Style);
+        const SkScalar D = SkIntToScalar(64);
+        canvas->drawRectCoords(0, 0, D, D, *paint);
+        canvas->drawLine(0, 0, D, D, *paint);
+        canvas->drawLine(0, D, D, 0, *paint);
+
+        SkPaint::FontMetrics fm;
+        paint->getFontMetrics(&fm);
+        paint->setColor(SK_ColorRED);
+        paint->setStyle(SkPaint::kFill_Style);
+        SkScalar x = D/2;
+        SkScalar y = D/2 - (fm.fAscent + fm.fDescent)/2;
+        SkString str;
+        str.appendS32(count);
+        canvas->drawText(str.c_str(), str.size(), x, y, *paint);
+
+        canvas->restore();
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        if (false) { test_stroke(canvas); return; }
+
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        paint.setStrokeWidth(SkIntToScalar(4));
+        paint.setTextSize(SkIntToScalar(40));
+        paint.setTextAlign(SkPaint::kCenter_Align);
+
+        canvas->save();
+        canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
+        // translate (1 point)
+        const int src1[] = { 0, 0 };
+        const int dst1[] = { 5, 5 };
+        doDraw(canvas, &paint, src1, dst1, 1);
+        canvas->restore();
+
+        canvas->save();
+        canvas->translate(SkIntToScalar(160), SkIntToScalar(10));
+        // rotate/uniform-scale (2 points)
+        const int src2[] = { 32, 32, 64, 32 };
+        const int dst2[] = { 32, 32, 64, 48 };
+        doDraw(canvas, &paint, src2, dst2, 2);
+        canvas->restore();
+
+        canvas->save();
+        canvas->translate(SkIntToScalar(10), SkIntToScalar(110));
+        // rotate/skew (3 points)
+        const int src3[] = { 0, 0, 64, 0, 0, 64 };
+        const int dst3[] = { 0, 0, 96, 0, 24, 64 };
+        doDraw(canvas, &paint, src3, dst3, 3);
+        canvas->restore();
+
+        canvas->save();
+        canvas->translate(SkIntToScalar(160), SkIntToScalar(110));
+        // perspective (4 points)
+        const int src4[] = { 0, 0, 64, 0, 64, 64, 0, 64 };
+        const int dst4[] = { 0, 0, 96, 0, 64, 96, 0, 64 };
+        doDraw(canvas, &paint, src4, dst4, 4);
+        canvas->restore();
+    }
+
+private:
+    typedef skiagm::GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+DEF_GM( return new Poly2PolyGM; )