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1 /* | 1 /* |
2 * Copyright (C) 2012 Google Inc. All rights reserved. | 2 * Copyright (C) 2012 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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33 | 33 |
34 #include "platform/geometry/FloatRect.h" | 34 #include "platform/geometry/FloatRect.h" |
35 #include "web/WebExport.h" | 35 #include "web/WebExport.h" |
36 | 36 |
37 namespace blink { | 37 namespace blink { |
38 class Range; | 38 class Range; |
39 class LayoutObject; | 39 class LayoutObject; |
40 | 40 |
41 // Find-in-page coordinate conversion methods. | 41 // Find-in-page coordinate conversion methods. |
42 // | 42 // |
43 // This coordinate system is designed to give consistent tickmarks in cases wher
e find matches | 43 // This coordinate system is designed to give consistent tickmarks in cases |
44 // are in scrollable areas but might not be visible (e.g. child frames, scroll:o
verflow). | 44 // where find matches are in scrollable areas but might not be visible (e.g. |
45 // In these cases, using absolute positions might lead to tickmarks pointing out
side the visible | 45 // child frames, scroll:overflow). In these cases, using absolute positions |
46 // area of its container, which is counter-intuitive for users. | 46 // might lead to tickmarks pointing outside the visible area of its container, |
| 47 // which is counter-intuitive for users. |
47 // | 48 // |
48 // Find-in-page coordinates are represented as normalized fractions of the main
frame document with | 49 // Find-in-page coordinates are represented as normalized fractions of the main |
49 // the property that they are built by composing the relative position of each l
ayoutObject to the maximum | 50 // frame document with the property that they are built by composing the |
50 // effective layout size of its container all the way up the layout tree. The re
sulting coordinates | 51 // relative position of each layoutObject to the maximum effective layout size |
51 // are scroll-independent, representing any contents scaled to the visible area
of their container. | 52 // of its container all the way up the layout tree. The resulting coordinates |
52 // The provided methods support scroll:overflow and are CSS position and transfo
rm-friendly. | 53 // are scroll-independent, representing any contents scaled to the visible area |
| 54 // of their container. The provided methods support scroll:overflow and are |
| 55 // CSS position and transform-friendly. |
53 | 56 |
54 WEB_EXPORT FloatRect findInPageRectFromAbsoluteRect(const FloatRect&, | 57 WEB_EXPORT FloatRect findInPageRectFromAbsoluteRect(const FloatRect&, |
55 const LayoutObject*); | 58 const LayoutObject*); |
56 WEB_EXPORT FloatRect findInPageRectFromRange(Range*); | 59 WEB_EXPORT FloatRect findInPageRectFromRange(Range*); |
57 | 60 |
58 } // namespace blink | 61 } // namespace blink |
59 | 62 |
60 #endif | 63 #endif |
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