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Diffstat (limited to 'experimental/sksg/SkSGNode.h')
-rw-r--r-- | experimental/sksg/SkSGNode.h | 107 |
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 |