"Modularize" SkSG

* relocate all SkSG-related files under modules/sksg/
* fix various tidbits to make non-sksg builds possible
* drop obsolete SampleSGInval.cpp

Change-Id: I54e6c5bb1a09f45030fa8d607b3eb3f7cba78957
Reviewed-on: https://skia-review.googlesource.com/130025
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Mike Klein <mtklein@google.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/modules/sksg/src/SkSGScene.cpp b/modules/sksg/src/SkSGScene.cpp
new file mode 100644
index 0000000000..8d7e0b369b
--- /dev/null
+++ b/modules/sksg/src/SkSGScene.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSGScene.h"
+
+#include "SkCanvas.h"
+#include "SkMatrix.h"
+#include "SkPaint.h"
+#include "SkSGInvalidationController.h"
+#include "SkSGRenderNode.h"
+
+namespace sksg {
+
+Animator::Animator()  = default;
+Animator::~Animator() = default;
+
+void Animator::tick(float t) {
+    this->onTick(t);
+}
+
+GroupAnimator::GroupAnimator(AnimatorList&& animators)
+    : fAnimators(std::move(animators)) {}
+
+void GroupAnimator::onTick(float t) {
+    for (const auto& a : fAnimators) {
+        a->tick(t);
+    }
+}
+
+std::unique_ptr<Scene> Scene::Make(sk_sp<RenderNode> root, AnimatorList&& anims) {
+    return root ? std::unique_ptr<Scene>(new Scene(std::move(root), std::move(anims))) : nullptr;
+}
+
+Scene::Scene(sk_sp<RenderNode> root, AnimatorList&& animators)
+    : fRoot(std::move(root))
+    , fAnimators(std::move(animators)) {}
+
+Scene::~Scene() = default;
+
+void Scene::render(SkCanvas* canvas) const {
+    InvalidationController ic;
+    fRoot->revalidate(&ic, SkMatrix::I());
+    fRoot->render(canvas);
+
+    if (fShowInval) {
+        SkPaint fill, stroke;
+        fill.setAntiAlias(true);
+        fill.setColor(0x40ff0000);
+        stroke.setAntiAlias(true);
+        stroke.setColor(0xffff0000);
+        stroke.setStyle(SkPaint::kStroke_Style);
+
+        for (const auto& r : ic) {
+            canvas->drawRect(r, fill);
+            canvas->drawRect(r, stroke);
+        }
+    }
+}
+
+void Scene::animate(float t) {
+    for (const auto& anim : fAnimators) {
+        anim->tick(t);
+    }
+}
+
+} // namespace sksg