"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, 0 insertions, 107 deletions

diff --git a/experimental/sksg/SkSGNode.h b/experimental/sksg/SkSGNode.h
deleted file mode 100644
index 17619de485..0000000000
--- a/experimental/sksg/SkSGNode.h
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * Copyright 2017 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef SkSGNode_DEFINED
-#define SkSGNode_DEFINED
-
-#include "SkRect.h"
-#include "SkRefCnt.h"
-#include "SkTDArray.h"
-
-class SkCanvas;
-class SkMatrix;
-
-namespace sksg {
-
-class InvalidationController;
-
-/**
- * Base class for all scene graph nodes.
- *
- * Handles ingress edge management for the DAG (i.e. node -> "parent" node mapping),
- * and invalidation.
- *
- * Note: egress edges are only implemented/supported in container subclasses
- * (e.g. Group, Effect, Draw).
- */
-class Node : public SkRefCnt {
-public:
-    // Traverse the DAG and revalidate any dependant/invalidated nodes.
-    // Returns the bounding box for the DAG fragment.
-    const SkRect& revalidate(InvalidationController*, const SkMatrix&);
-
-protected:
-    enum InvalTraits {
-        // Nodes with this trait never generate direct damage -- instead,
-        // the damage bubbles up to ancestors.
-        kBubbleDamage_Trait = 1 << 0,
-    };
-
-    explicit Node(uint32_t invalTraits);
-    ~Node() override;
-
-    const SkRect& bounds() const {
-        SkASSERT(!this->hasInval());
-        return fBounds;
-    }
-
-    // Tag this node for invalidation and optional damage.
-    void invalidate(bool damage = true);
-    bool hasInval() const { return fFlags & kInvalidated_Flag; }
-
-    // Dispatched on revalidation.  Subclasses are expected to recompute/cache their properties
-    // and return their bounding box in local coordinates.
-    virtual SkRect onRevalidate(InvalidationController*, const SkMatrix& ctm) = 0;
-
-    // Register/unregister |this| to receive invalidation events from a descendant.
-    void observeInval(const sk_sp<Node>&);
-    void unobserveInval(const sk_sp<Node>&);
-
-private:
-    enum Flags {
-        kInvalidated_Flag   = 1 << 0, // the node or its descendants require revalidation
-        kDamage_Flag        = 1 << 1, // the node contributes damage during revalidation
-        kObserverArray_Flag = 1 << 2, // the node has more than one inval observer
-        kInTraversal_Flag   = 1 << 3, // the node is part of a traversal (cycle detection)
-    };
-
-    template <typename Func>
-    void forEachInvalObserver(Func&&) const;
-
-    class ScopedFlag;
-
-    union {
-        Node*             fInvalObserver;
-        SkTDArray<Node*>* fInvalObserverArray;
-    };
-    SkRect                fBounds;
-    const uint32_t        fInvalTraits : 16;
-    uint32_t              fFlags       : 16;
-
-    typedef SkRefCnt INHERITED;
-};
-
-// Helper for defining attribute getters/setters in subclasses.
-#define SG_ATTRIBUTE(attr_name, attr_type, attr_container)             \
-    const attr_type& get##attr_name() const { return attr_container; } \
-    void set##attr_name(const attr_type& v) {                          \
-        if (attr_container == v) return;                               \
-        attr_container = v;                                            \
-        this->invalidate();                                            \
-    }
-
-#define SG_MAPPED_ATTRIBUTE(attr_name, attr_type, attr_container)                \
-    attr_type get##attr_name() const { return attr_container.get##attr_name(); } \
-    void set##attr_name(const attr_type& v) {                                    \
-        if (attr_container.get##attr_name() == v) return;                        \
-        attr_container.set##attr_name(v);                                        \
-        this->invalidate();                                                      \
-    }
-
-} // namespace sksg
-
-#endif // SkSGNode_DEFINED