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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef LayoutPagedFlowThread_h | 5 #ifndef LayoutPagedFlowThread_h |
| 6 #define LayoutPagedFlowThread_h | 6 #define LayoutPagedFlowThread_h |
| 7 | 7 |
| 8 #include "core/layout/LayoutMultiColumnFlowThread.h" | 8 #include "core/layout/LayoutMultiColumnFlowThread.h" |
| 9 | 9 |
| 10 namespace blink { | 10 namespace blink { |
| 11 | 11 |
| 12 // A flow thread for paged overflow. FIXME: The current implementation relies on
the multicol | 12 // A flow thread for paged overflow. FIXME: The current implementation relies on |
| 13 // implementation, but it in the long run it would be better to have what's comm
on between | 13 // the multicol implementation, but it in the long run it would be better to |
| 14 // LayoutMultiColumnFlowThread and LayoutPagedFlowThread in LayoutFlowThread, an
d have both of them | 14 // have what's common between LayoutMultiColumnFlowThread and |
| 15 // inherit from that one. | 15 // LayoutPagedFlowThread in LayoutFlowThread, and have both of them inherit |
| 16 // from that one. |
| 16 class LayoutPagedFlowThread : public LayoutMultiColumnFlowThread { | 17 class LayoutPagedFlowThread : public LayoutMultiColumnFlowThread { |
| 17 public: | 18 public: |
| 18 static LayoutPagedFlowThread* createAnonymous( | 19 static LayoutPagedFlowThread* createAnonymous( |
| 19 Document&, | 20 Document&, |
| 20 const ComputedStyle& parentStyle); | 21 const ComputedStyle& parentStyle); |
| 21 | 22 |
| 22 LayoutBlockFlow* pagedBlockFlow() const { | 23 LayoutBlockFlow* pagedBlockFlow() const { |
| 23 return toLayoutBlockFlow(parent()); | 24 return toLayoutBlockFlow(parent()); |
| 24 } | 25 } |
| 25 | 26 |
| 26 // Return the number of pages. Will never be less than 1. | 27 // Return the number of pages. Will never be less than 1. |
| 27 int pageCount(); | 28 int pageCount(); |
| 28 | 29 |
| 29 bool isLayoutPagedFlowThread() const override { return true; } | 30 bool isLayoutPagedFlowThread() const override { return true; } |
| 30 const char* name() const override { return "LayoutPagedFlowThread"; } | 31 const char* name() const override { return "LayoutPagedFlowThread"; } |
| 31 bool needsNewWidth() const override; | 32 bool needsNewWidth() const override; |
| 32 void updateLogicalWidth() override; | 33 void updateLogicalWidth() override; |
| 33 virtual void layout(); | 34 virtual void layout(); |
| 34 | 35 |
| 35 private: | 36 private: |
| 36 bool descendantIsValidColumnSpanner( | 37 bool descendantIsValidColumnSpanner( |
| 37 LayoutObject* /*descendant*/) const override { | 38 LayoutObject* /*descendant*/) const override { |
| 38 return false; | 39 return false; |
| 39 } | 40 } |
| 40 }; | 41 }; |
| 41 | 42 |
| 42 } // namespace blink | 43 } // namespace blink |
| 43 | 44 |
| 44 #endif // LayoutPagedFlowThread_h | 45 #endif // LayoutPagedFlowThread_h |
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