1 files changed, 137 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/gpu/GrTestUtils.h b/gfx/skia/skia/include/gpu/GrTestUtils.h
new file mode 100644
index 000000000..17bf12af3
--- /dev/null
+++ b/gfx/skia/skia/include/gpu/GrTestUtils.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrTestUtils_DEFINED
+#define GrTestUtils_DEFINED
+
+#include "SkTypes.h"
+
+#ifdef GR_TEST_UTILS
+
+#include "GrColor.h"
+#include "GrColorSpaceXform.h"
+#include "SkPathEffect.h"
+#include "SkRandom.h"
+#include "SkStrokeRec.h"
+#include "../private/SkTemplates.h"
+
+class GrStyle;
+class SkMatrix;
+class SkPath;
+class SkRRect;
+struct SkRect;
+
+namespace GrTest {
+/**
+ * Helpers for use in Test functions.
+ */
+const SkMatrix& TestMatrix(SkRandom*);
+const SkMatrix& TestMatrixPreservesRightAngles(SkRandom*);
+const SkMatrix& TestMatrixRectStaysRect(SkRandom*);
+const SkMatrix& TestMatrixInvertible(SkRandom*);
+const SkMatrix& TestMatrixPerspective(SkRandom*);
+const SkRect& TestRect(SkRandom*);
+const SkRect& TestSquare(SkRandom*);
+const SkRRect& TestRRectSimple(SkRandom*);
+const SkPath& TestPath(SkRandom*);
+const SkPath& TestPathConvex(SkRandom*);
+SkStrokeRec TestStrokeRec(SkRandom*);
+/** Creates styles with dash path effects and null path effects */
+void TestStyle(SkRandom*, GrStyle*);
+sk_sp<SkColorSpace> TestColorSpace(SkRandom*);
+sk_sp<GrColorSpaceXform> TestColorXform(SkRandom*);
+
+// We have a simplified dash path effect here to avoid relying on SkDashPathEffect which
+// is in the optional build target effects.
+class TestDashPathEffect : public SkPathEffect {
+public:
+    static sk_sp<SkPathEffect> Make(const SkScalar* intervals, int count, SkScalar phase) {
+        return sk_sp<SkPathEffect>(new TestDashPathEffect(intervals, count, phase));
+    }
+
+    bool filterPath(SkPath* dst, const SkPath&, SkStrokeRec* , const SkRect*) const override;
+    DashType asADash(DashInfo* info) const override;
+    Factory getFactory() const override { return nullptr; }
+    void toString(SkString*) const override {}
+
+private:
+    TestDashPathEffect(const SkScalar* intervals, int count, SkScalar phase);
+
+    int                     fCount;
+    SkAutoTArray<SkScalar>  fIntervals;
+    SkScalar                fPhase;
+    SkScalar                fInitialDashLength;
+    int                     fInitialDashIndex;
+    SkScalar                fIntervalLength;
+};
+
+}  // namespace GrTest
+
+static inline GrColor GrRandomColor(SkRandom* random) {
+    // There are only a few cases of random colors which interest us
+    enum ColorMode {
+        kAllOnes_ColorMode,
+        kAllZeros_ColorMode,
+        kAlphaOne_ColorMode,
+        kRandom_ColorMode,
+        kLast_ColorMode = kRandom_ColorMode
+    };
+
+    ColorMode colorMode = ColorMode(random->nextULessThan(kLast_ColorMode + 1));
+    GrColor color SK_INIT_TO_AVOID_WARNING;
+    switch (colorMode) {
+        case kAllOnes_ColorMode:
+            color = GrColorPackRGBA(0xFF, 0xFF, 0xFF, 0xFF);
+            break;
+        case kAllZeros_ColorMode:
+            color = GrColorPackRGBA(0, 0, 0, 0);
+            break;
+        case kAlphaOne_ColorMode:
+            color = GrColorPackRGBA(random->nextULessThan(256),
+                                    random->nextULessThan(256),
+                                    random->nextULessThan(256),
+                                    0xFF);
+            break;
+        case kRandom_ColorMode: {
+                uint8_t alpha = random->nextULessThan(256);
+                color = GrColorPackRGBA(random->nextRangeU(0, alpha),
+                                        random->nextRangeU(0, alpha),
+                                        random->nextRangeU(0, alpha),
+                                        alpha);
+            break;
+        }
+    }
+    GrColorIsPMAssert(color);
+    return color;
+}
+
+static inline uint8_t GrRandomCoverage(SkRandom* random) {
+    enum CoverageMode {
+        kZero_CoverageMode,
+        kAllOnes_CoverageMode,
+        kRandom_CoverageMode,
+        kLast_CoverageMode = kRandom_CoverageMode
+    };
+
+    CoverageMode colorMode = CoverageMode(random->nextULessThan(kLast_CoverageMode + 1));
+    uint8_t coverage SK_INIT_TO_AVOID_WARNING;
+    switch (colorMode) {
+        case kZero_CoverageMode:
+            coverage = 0;
+            break;
+        case kAllOnes_CoverageMode:
+            coverage = 0xff;
+            break;
+        case kRandom_CoverageMode:
+            coverage = random->nextULessThan(256);
+            break;
+    }
+    return coverage;
+}
+
+#endif
+#endif