1 files changed, 70 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/graphics/paint/display_item_raster_invalidator.h b/chromium/third_party/blink/renderer/platform/graphics/paint/display_item_raster_invalidator.h
new file mode 100644
index 00000000000..310efb3bd21
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/graphics/paint/display_item_raster_invalidator.h
@@ -0,0 +1,70 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DISPLAY_ITEM_RASTER_INVALIDATOR_H_
+#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_DISPLAY_ITEM_RASTER_INVALIDATOR_H_
+
+#include "third_party/blink/renderer/platform/graphics/paint/raster_invalidator.h"
+
+namespace blink {
+
+// Generates raster invalidation for changed display items in a chunk.
+class DisplayItemRasterInvalidator {
+ public:
+  DisplayItemRasterInvalidator(RasterInvalidator& invalidator,
+                               const PaintArtifact& old_paint_artifact,
+                               const PaintArtifact& new_paint_artifact,
+                               const PaintChunk& old_chunk,
+                               const PaintChunk& new_chunk,
+                               const ChunkToLayerMapper& mapper)
+      : invalidator_(invalidator),
+        old_paint_artifact_(old_paint_artifact),
+        new_paint_artifact_(new_paint_artifact),
+        old_chunk_(old_chunk),
+        new_chunk_(new_chunk),
+        mapper_(mapper) {
+    DCHECK(old_chunk_.Matches(new_chunk_));
+  }
+
+  void Generate();
+
+ private:
+  static const auto kClientIsOld = RasterInvalidator::kClientIsOld;
+  static const auto kClientIsNew = RasterInvalidator::kClientIsNew;
+
+  ALWAYS_INLINE void AddRasterInvalidation(const DisplayItemClient&,
+                                           const FloatRect&,
+                                           PaintInvalidationReason,
+                                           RasterInvalidator::ClientIsOldOrNew);
+  ALWAYS_INLINE size_t
+  MatchNewDisplayItemInOldChunk(const DisplayItem& new_item,
+                                size_t& next_old_item_to_match);
+  ALWAYS_INLINE void GenerateRasterInvalidation(
+      const DisplayItemClient&,
+      const FloatRect* old_visual_rect,
+      const FloatRect* new_visual_rect,
+      PaintInvalidationReason);
+  ALWAYS_INLINE void GenerateIncrementalRasterInvalidation(
+      const DisplayItemClient&,
+      const FloatRect& old_visual_rect,
+      const FloatRect& new_visual_rect);
+  ALWAYS_INLINE void GenerateFullRasterInvalidation(
+      const DisplayItemClient&,
+      const FloatRect& old_visual_rect,
+      const FloatRect& new_visual_rect,
+      PaintInvalidationReason reason);
+
+  RasterInvalidator& invalidator_;
+  const PaintArtifact& old_paint_artifact_;
+  const PaintArtifact& new_paint_artifact_;
+  const PaintChunk& old_chunk_;
+  const PaintChunk& new_chunk_;
+  const ChunkToLayerMapper& mapper_;
+  // Maps clients to indices of display items in old_chunk_.
+  HashMap<const DisplayItemClient*, Vector<size_t>> old_display_items_index_;
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_DISPLAY_ITEM_PAINT_RASTER_INVALIDATOR_H_