1 | /* |
2 | * Copyright (C) 2003-2016 Apple 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 |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #pragma once |
27 | |
28 | #include <algorithm> |
29 | #include <wtf/JSONValues.h> |
30 | #include <wtf/Forward.h> |
31 | |
32 | #if PLATFORM(MAC) && defined __OBJC__ |
33 | #import <Foundation/NSGeometry.h> |
34 | #endif |
35 | |
36 | #if USE(CG) |
37 | typedef struct CGSize CGSize; |
38 | #endif |
39 | |
40 | #if PLATFORM(MAC) |
41 | #ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES |
42 | typedef struct CGSize NSSize; |
43 | #else |
44 | typedef struct _NSSize NSSize; |
45 | #endif |
46 | #endif |
47 | |
48 | #if PLATFORM(IOS_FAMILY) |
49 | #ifndef NSSize |
50 | #define NSSize CGSize |
51 | #endif |
52 | #endif |
53 | |
54 | #if PLATFORM(WIN) |
55 | typedef struct tagSIZE SIZE; |
56 | |
57 | struct D2D_SIZE_U; |
58 | typedef D2D_SIZE_U D2D1_SIZE_U; |
59 | |
60 | struct D2D_SIZE_F; |
61 | typedef D2D_SIZE_F D2D1_SIZE_F; |
62 | #endif |
63 | |
64 | namespace WTF { |
65 | class TextStream; |
66 | } |
67 | |
68 | namespace WebCore { |
69 | |
70 | class FloatSize; |
71 | |
72 | class IntSize { |
73 | public: |
74 | IntSize() : m_width(0), m_height(0) { } |
75 | IntSize(int width, int height) : m_width(width), m_height(height) { } |
76 | WEBCORE_EXPORT explicit IntSize(const FloatSize&); // don't do this implicitly since it's lossy |
77 | |
78 | int width() const { return m_width; } |
79 | int height() const { return m_height; } |
80 | |
81 | void setWidth(int width) { m_width = width; } |
82 | void setHeight(int height) { m_height = height; } |
83 | |
84 | bool isEmpty() const { return m_width <= 0 || m_height <= 0; } |
85 | bool isZero() const { return !m_width && !m_height; } |
86 | |
87 | float aspectRatio() const { return static_cast<float>(m_width) / static_cast<float>(m_height); } |
88 | |
89 | void expand(int width, int height) |
90 | { |
91 | m_width += width; |
92 | m_height += height; |
93 | } |
94 | |
95 | void contract(int width, int height) |
96 | { |
97 | m_width -= width; |
98 | m_height -= height; |
99 | } |
100 | |
101 | void scale(float widthScale, float heightScale) |
102 | { |
103 | m_width = static_cast<int>(static_cast<float>(m_width) * widthScale); |
104 | m_height = static_cast<int>(static_cast<float>(m_height) * heightScale); |
105 | } |
106 | |
107 | void scale(float scale) |
108 | { |
109 | this->scale(scale, scale); |
110 | } |
111 | |
112 | IntSize expandedTo(const IntSize& other) const |
113 | { |
114 | return IntSize(std::max(m_width, other.m_width), std::max(m_height, other.m_height)); |
115 | } |
116 | |
117 | IntSize shrunkTo(const IntSize& other) const |
118 | { |
119 | return IntSize(std::min(m_width, other.m_width), std::min(m_height, other.m_height)); |
120 | } |
121 | |
122 | void clampNegativeToZero() |
123 | { |
124 | *this = expandedTo(IntSize()); |
125 | } |
126 | |
127 | void clampToMinimumSize(const IntSize& minimumSize) |
128 | { |
129 | if (m_width < minimumSize.width()) |
130 | m_width = minimumSize.width(); |
131 | if (m_height < minimumSize.height()) |
132 | m_height = minimumSize.height(); |
133 | } |
134 | |
135 | WEBCORE_EXPORT IntSize constrainedBetween(const IntSize& min, const IntSize& max) const; |
136 | |
137 | template <typename T = WTF::CrashOnOverflow> |
138 | Checked<unsigned, T> area() const |
139 | { |
140 | return Checked<unsigned, T>(abs(m_width)) * abs(m_height); |
141 | } |
142 | |
143 | size_t unclampedArea() const |
144 | { |
145 | return static_cast<size_t>(abs(m_width)) * abs(m_height); |
146 | } |
147 | |
148 | int diagonalLengthSquared() const |
149 | { |
150 | return m_width * m_width + m_height * m_height; |
151 | } |
152 | |
153 | IntSize transposedSize() const |
154 | { |
155 | return IntSize(m_height, m_width); |
156 | } |
157 | |
158 | #if USE(CG) |
159 | WEBCORE_EXPORT explicit IntSize(const CGSize&); // don't do this implicitly since it's lossy |
160 | WEBCORE_EXPORT operator CGSize() const; |
161 | #endif |
162 | |
163 | #if PLATFORM(MAC) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES) |
164 | WEBCORE_EXPORT explicit IntSize(const NSSize &); // don't do this implicitly since it's lossy |
165 | WEBCORE_EXPORT operator NSSize() const; |
166 | #endif |
167 | |
168 | #if PLATFORM(WIN) |
169 | IntSize(const SIZE&); |
170 | operator SIZE() const; |
171 | IntSize(const D2D1_SIZE_U&); |
172 | explicit IntSize(const D2D1_SIZE_F&); // don't do this implicitly since it's lossy; |
173 | operator D2D1_SIZE_U() const; |
174 | operator D2D1_SIZE_F() const; |
175 | #endif |
176 | |
177 | String toJSONString() const; |
178 | Ref<JSON::Object> toJSONObject() const; |
179 | |
180 | private: |
181 | int m_width, m_height; |
182 | }; |
183 | |
184 | inline IntSize& operator+=(IntSize& a, const IntSize& b) |
185 | { |
186 | a.setWidth(a.width() + b.width()); |
187 | a.setHeight(a.height() + b.height()); |
188 | return a; |
189 | } |
190 | |
191 | inline IntSize& operator-=(IntSize& a, const IntSize& b) |
192 | { |
193 | a.setWidth(a.width() - b.width()); |
194 | a.setHeight(a.height() - b.height()); |
195 | return a; |
196 | } |
197 | |
198 | inline IntSize operator+(const IntSize& a, const IntSize& b) |
199 | { |
200 | return IntSize(a.width() + b.width(), a.height() + b.height()); |
201 | } |
202 | |
203 | inline IntSize operator-(const IntSize& a, const IntSize& b) |
204 | { |
205 | return IntSize(a.width() - b.width(), a.height() - b.height()); |
206 | } |
207 | |
208 | inline IntSize operator-(const IntSize& size) |
209 | { |
210 | return IntSize(-size.width(), -size.height()); |
211 | } |
212 | |
213 | inline bool operator==(const IntSize& a, const IntSize& b) |
214 | { |
215 | return a.width() == b.width() && a.height() == b.height(); |
216 | } |
217 | |
218 | inline bool operator!=(const IntSize& a, const IntSize& b) |
219 | { |
220 | return a.width() != b.width() || a.height() != b.height(); |
221 | } |
222 | |
223 | WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const IntSize&); |
224 | |
225 | } // namespace WebCore |
226 | |
227 | namespace WTF { |
228 | template<> struct DefaultHash<WebCore::IntSize>; |
229 | template<> struct HashTraits<WebCore::IntSize>; |
230 | |
231 | template<typename Type> struct LogArgument; |
232 | template <> |
233 | struct LogArgument<WebCore::IntSize> { |
234 | static String toString(const WebCore::IntSize& size) |
235 | { |
236 | return size.toJSONString(); |
237 | } |
238 | }; |
239 | } |
240 | |
241 | |