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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* Copyright (C) 2005-2014 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 ViewportConfiguration_h
#define ViewportConfiguration_h
#include "FloatSize.h"
#include "IntSize.h"
#include "ViewportArguments.h"
#include <wtf/Noncopyable.h>
namespace WebCore {
class TextStream;
class ViewportConfiguration {
WTF_MAKE_NONCOPYABLE(ViewportConfiguration); WTF_MAKE_FAST_ALLOCATED;
public:
// FIXME: unify with ViewportArguments.
struct Parameters {
Parameters()
: width(0)
, height(0)
, initialScale(0)
, minimumScale(0)
, maximumScale(0)
, allowsUserScaling(false)
, allowsShrinkToFit(false)
, widthIsSet(false)
, heightIsSet(false)
, initialScaleIsSet(false)
{
}
double width;
double height;
double initialScale;
double minimumScale;
double maximumScale;
bool allowsUserScaling;
bool allowsShrinkToFit;
bool widthIsSet;
bool heightIsSet;
bool initialScaleIsSet;
};
WEBCORE_EXPORT ViewportConfiguration();
const Parameters& defaultConfiguration() const { return m_defaultConfiguration; }
WEBCORE_EXPORT void setDefaultConfiguration(const Parameters&);
const IntSize& contentsSize() const { return m_contentSize; }
WEBCORE_EXPORT bool setContentsSize(const IntSize&);
const FloatSize& minimumLayoutSize() const { return m_minimumLayoutSize; }
WEBCORE_EXPORT bool setMinimumLayoutSize(const FloatSize&);
const ViewportArguments& viewportArguments() const { return m_viewportArguments; }
WEBCORE_EXPORT bool setViewportArguments(const ViewportArguments&);
WEBCORE_EXPORT bool setCanIgnoreScalingConstraints(bool);
void setForceAlwaysUserScalable(bool forceAlwaysUserScalable) { m_forceAlwaysUserScalable = forceAlwaysUserScalable; }
WEBCORE_EXPORT IntSize layoutSize() const;
WEBCORE_EXPORT double initialScale() const;
WEBCORE_EXPORT double initialScaleIgnoringContentSize() const;
WEBCORE_EXPORT double minimumScale() const;
double maximumScale() const { return m_configuration.maximumScale; }
WEBCORE_EXPORT bool allowsUserScaling() const;
bool allowsShrinkToFit() const;
WEBCORE_EXPORT static Parameters webpageParameters();
WEBCORE_EXPORT static Parameters textDocumentParameters();
WEBCORE_EXPORT static Parameters imageDocumentParameters();
WEBCORE_EXPORT static Parameters xhtmlMobileParameters();
WEBCORE_EXPORT static Parameters testingParameters();
#ifndef NDEBUG
WTF::CString description() const;
void dump() const;
#endif
private:
void updateConfiguration();
double viewportArgumentsLength(double length) const;
double initialScaleFromSize(double width, double height, bool shouldIgnoreScalingConstraints) const;
int layoutWidth() const;
int layoutHeight() const;
bool shouldIgnoreScalingConstraints() const;
bool shouldIgnoreVerticalScalingConstraints() const;
bool shouldIgnoreHorizontalScalingConstraints() const;
Parameters m_configuration;
Parameters m_defaultConfiguration;
IntSize m_contentSize;
FloatSize m_minimumLayoutSize;
ViewportArguments m_viewportArguments;
bool m_canIgnoreScalingConstraints;
bool m_forceAlwaysUserScalable;
};
TextStream& operator<<(TextStream&, const ViewportConfiguration::Parameters&);
} // namespace WebCore
#endif // ViewportConfiguration_h
|
