diff options
Diffstat (limited to 'experimental/sksg/SkSGNode.h')
| -rw-r--r-- | experimental/sksg/SkSGNode.h | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/experimental/sksg/SkSGNode.h b/experimental/sksg/SkSGNode.h index 30ff85d3c7..bc5970a3d9 100644 --- a/experimental/sksg/SkSGNode.h +++ b/experimental/sksg/SkSGNode.h @@ -8,6 +8,7 @@ #ifndef SkSGNode_DEFINED #define SkSGNode_DEFINED +#include "SkRect.h" #include "SkRefCnt.h" #include "SkTDArray.h" @@ -29,21 +30,24 @@ class InvalidationController; */ class Node : public SkRefCnt { public: - // Traverse the DAG and revalidate any connected/invalidated nodes. - void revalidate(InvalidationController*, const SkMatrix&); + // Traverse the DAG and revalidate any dependant/invalidated nodes. + // Returns the bounding box for the DAG fragment. + const SkRect& revalidate(InvalidationController*, const SkMatrix&); protected: Node(); ~Node() override; - // Mark this node and (transitively) any invalidation receivers for revalidation. - void invalidate(); + void invalidateSelf(); + void invalidateAncestors(); - bool isInvalidated() const { return fFlags & kInvalidated_Flag; } + bool hasSelfInval() const { return fFlags & kInvalSelf_Flag; } + bool hasDescendantInval() const { return fFlags & kInvalDescendant_Flag; } + bool hasInval() const { return this->hasSelfInval() || this->hasDescendantInval(); } - // Dispatched on revalidation. Subclasses are expected to recompute their geometry - // and push dirty rects to the InvalidationController. - virtual void onRevalidate(InvalidationController*, const SkMatrix& ctm) = 0; + // 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; private: void addInvalReceiver(Node*); @@ -57,9 +61,10 @@ private: void forEachInvalReceiver(Func&&) const; enum Flags { - kInvalidated_Flag = 1 << 0, // the node requires revalidation - kReceiverArray_Flag = 1 << 1, // the node has more than one inval receiver - kInTraversal_Flag = 1 << 2, // the node is part of a traversal (cycle detection) + kInvalSelf_Flag = 1 << 0, // the node requires revalidation + kInvalDescendant_Flag = 1 << 1, // the node's descendents require invalidation + kReceiverArray_Flag = 1 << 2, // the node has more than one inval receiver + kInTraversal_Flag = 1 << 3, // the node is part of a traversal (cycle detection) }; class ScopedFlag; @@ -68,18 +73,19 @@ private: Node* fInvalReceiver; SkTDArray<Node*>* fInvalReceiverArray; }; + SkRect fBounds; uint32_t fFlags; typedef SkRefCnt INHERITED; }; // Helper for defining attribute getters/setters in subclasses. -#define SG_ATTRIBUTE(attr_name, attr_type, attr_container) \ +#define SG_ATTRIBUTE(attr_name, attr_type, attr_container) \ attr_type get##attr_name() const { return attr_container; } \ - void set##attr_name(attr_type v) { \ - if (attr_container == v) return; \ - attr_container = v; \ - this->invalidate(); \ + void set##attr_name(attr_type v) { \ + if (attr_container == v) return; \ + attr_container = v; \ + this->invalidateSelf(); \ } } // namespace sksg |