Mozart: Add helpers for building view associates.

mojo/ui/associates/test_helpers.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_UI_ASSOCIATES_TEST_HELPERS_H_
+#define MOJO_UI_ASSOCIATES_TEST_HELPERS_H_
+
+#include <utility>
+
+#include "base/callback.h"
+#include "mojo/services/ui/views/interfaces/view_associates.mojom.h"
+
+namespace test {
+
+template <typename T>
+void Capture(const base::Closure& quit, T* out, T value) {
+  *out = std::move(value);
+  quit.Run();
+}
+
+inline mojo::PointPtr MakePoint(int32_t x, int32_t y) {
+  auto result = mojo::Point::New();
+  result->x = x;
+  result->y = y;
+  return result.Pass();
+}

[abarth, 2016/03/09 04:06:36]

These are pretty general functions.  They're not really related to view
associates.

[jeffbrown, 2016/03/09 19:43:43]

Yeah, I could probably put this one into geometry_util but the others aren't
things I want apps using.  I think I want to leave it alone for now.

+
+inline mojo::TransformPtr MakeTransform(float x) {

[abarth, 2016/03/09 04:06:36]

I don't quite get this one.  MakeScaleTransform?

[jeffbrown, 2016/03/09 19:43:43]

Renaming to MakeDummyTransform.

+  auto result = mojo::Transform::New();
+  result->matrix[0] = x;
+  return result.Pass();
+}
+
+inline mojo::gfx::composition::SceneTokenPtr MakeSceneToken(uint32_t value) {
+  auto result = mojo::gfx::composition::SceneToken::New();
+  result->value = value;
+  return result.Pass();
+}
+
+inline mojo::ui::ViewTokenPtr MakeViewToken(uint32_t value) {
+  auto result = mojo::ui::ViewToken::New();
+  result->value = value;
+  return result.Pass();
+}
+
+inline mojo::gfx::composition::HitTestResultPtr MakeSimpleHitTestResult(
+    mojo::gfx::composition::SceneTokenPtr scene_token,
+    mojo::TransformPtr transform) {
+  auto result = mojo::gfx::composition::HitTestResult::New();
+  result->root = mojo::gfx::composition::SceneHit::New();
+  result->root->scene_token = scene_token.Pass();
+  result->root->hits.push_back(mojo::gfx::composition::Hit::New());
+  result->root->hits[0]->set_node(mojo::gfx::composition::NodeHit::New());
+  result->root->hits[0]->get_node()->transform = transform.Pass();
+  return result.Pass();
+}
+
+inline mojo::gfx::composition::HitTestResultPtr MakeSimpleHitTestResult(
+    mojo::gfx::composition::SceneTokenPtr scene_token) {
+  return MakeSimpleHitTestResult(scene_token.Pass(), MakeTransform(0.f));
+}
+
+}  // namespace test
+
+#endif  // MOJO_UI_ASSOCIATES_TEST_HELPERS_H_