"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, 41 insertions, 0 deletions

diff --git a/modules/sksg/src/SkSGPaintNode.cpp b/modules/sksg/src/SkSGPaintNode.cpp
new file mode 100644
index 0000000000..9220b0f0af
--- /dev/null
+++ b/modules/sksg/src/SkSGPaintNode.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSGPaintNode.h"
+
+namespace sksg {
+
+// Paint nodes don't generate damage on their own, but via their aggregation ancestor Draw nodes.
+PaintNode::PaintNode() : INHERITED(kBubbleDamage_Trait) {}
+
+const SkPaint& PaintNode::makePaint() {
+    SkASSERT(!this->hasInval());
+
+    return fPaint;
+}
+
+SkRect PaintNode::onRevalidate(InvalidationController*, const SkMatrix&) {
+    SkASSERT(this->hasInval());
+
+    fPaint.reset();
+    fPaint.setAntiAlias(fAntiAlias);
+    fPaint.setBlendMode(fBlendMode);
+    fPaint.setStyle(fStyle);
+    fPaint.setStrokeWidth(fStrokeWidth);
+    fPaint.setStrokeMiter(fStrokeMiter);
+    fPaint.setStrokeJoin(fStrokeJoin);
+    fPaint.setStrokeCap(fStrokeCap);
+
+    this->onApplyToPaint(&fPaint);
+
+    // Compose opacity on top of the subclass value.
+    fPaint.setAlpha(SkScalarRoundToInt(fPaint.getAlpha() * SkTPin<SkScalar>(fOpacity, 0, 1)));
+
+    return SkRect::MakeEmpty();
+}
+
+} // namespace sksg