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1 /* | |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Neither the name of Google Inc. nor the names of its | |
11 * contributors may be used to endorse or promote products derived from | |
12 * this software without specific prior written permission. | |
13 * | |
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 */ | |
26 | |
27 #ifndef RenderedDocumentMarker_h | |
28 #define RenderedDocumentMarker_h | |
29 | |
30 #include "core/editing/markers/DocumentMarker.h" | |
31 #include "platform/geometry/LayoutRect.h" | |
32 | |
33 namespace blink { | |
34 | |
35 class RenderedDocumentMarker final : public DocumentMarker { | |
36 private: | |
37 enum class State { Invalid, ValidNull, ValidNotNull }; | |
38 | |
39 public: | |
40 static RenderedDocumentMarker* create(const DocumentMarker& marker) { | |
41 return new RenderedDocumentMarker(marker); | |
42 } | |
43 | |
44 bool isRendered() const { return m_state == State::ValidNotNull; } | |
45 bool contains(const LayoutPoint& point) const { | |
46 DCHECK_EQ(m_state, State::ValidNotNull); | |
47 return m_renderedRect.contains(point); | |
48 } | |
49 void setRenderedRect(const LayoutRect& rect) { | |
50 if (m_state == State::ValidNotNull && rect == m_renderedRect) | |
51 return; | |
52 m_state = State::ValidNotNull; | |
53 m_renderedRect = rect; | |
54 } | |
55 | |
56 const LayoutRect& renderedRect() const { | |
57 DCHECK_EQ(m_state, State::ValidNotNull); | |
58 return m_renderedRect; | |
59 } | |
60 | |
61 void nullifyRenderedRect() { | |
62 m_state = State::ValidNull; | |
63 // Now |m_renderedRect| can not be accessed until |setRenderedRect| is | |
64 // called. | |
65 } | |
66 | |
67 void invalidate() { m_state = State::Invalid; } | |
68 bool isValid() const { return m_state != State::Invalid; } | |
69 | |
70 private: | |
71 explicit RenderedDocumentMarker(const DocumentMarker& marker) | |
72 : DocumentMarker(marker), m_state(State::Invalid) {} | |
73 | |
74 LayoutRect m_renderedRect; | |
75 State m_state; | |
76 }; | |
77 | |
78 DEFINE_TYPE_CASTS(RenderedDocumentMarker, DocumentMarker, marker, true, true); | |
79 | |
80 } // namespace blink | |
81 | |
82 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS( | |
83 blink::RenderedDocumentMarker); | |
84 | |
85 #endif | |
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