1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FindInPageCoordinates_h
#define FindInPageCoordinates_h
#include "platform/geometry/FloatRect.h"
namespace WebCore {
class Range;
class RenderObject;
}
namespace blink {
// Find-in-page coordinate conversion methods.
//
// This coordinate system is designed to give consistent tickmarks in cases where find matches
// are in scrollable areas but might not be visible (e.g. child frames, scroll:overflow).
// In these cases, using absolute positions might lead to tickmarks pointing outside the visible
// area of its container, which is counter-intuitive for users.
//
// Find-in-page coordinates are represented as normalized fractions of the main frame document with
// the property that they are built by composing the relative position of each renderer to the maximum
// effective layout size of its container all the way up the render tree. The resulting coordinates
// are scroll-independent, representing any contents scaled to the visible area of their container.
// The provided methods support scroll:overflow and are CSS position and transform-friendly.
WebCore::FloatRect findInPageRectFromAbsoluteRect(const WebCore::FloatRect&, const WebCore::RenderObject*);
WebCore::FloatRect findInPageRectFromRange(WebCore::Range*);
} // namespace blink
#endif
|
