Source/core/platform/graphics/transforms/TransformOperations.cpp - Issue 45553002: Move remaining classes in graphics/transforms to platform/

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Issue 45553002: Move remaining classes in graphics/transforms to platform/ (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Fix merge problem Created 7 years, 1 month ago

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1 /*

2 * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)

3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.

4 *

5 * This library is free software; you can redistribute it and/or

6 * modify it under the terms of the GNU Library General Public

7 * License as published by the Free Software Foundation; either

8 * version 2 of the License, or (at your option) any later version.

9 *

10 * This library is distributed in the hope that it will be useful,

11 * but WITHOUT ANY WARRANTY; without even the implied warranty of

12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

13 * Library General Public License for more details.

14 *

15 * You should have received a copy of the GNU Library General Public License

16 * along with this library; see the file COPYING.LIB. If not, write to

17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

18 * Boston, MA 02110-1301, USA.

19 *

20 */

21

22 #include "config.h"

23 #include "core/platform/graphics/transforms/TransformOperations.h"

24

25 #include <algorithm>

26 #include "core/platform/graphics/transforms/IdentityTransformOperation.h"

27 #include "core/platform/graphics/transforms/InterpolatedTransformOperation.h"

28

29 using namespace std;

30

31 namespace WebCore {

32

33 TransformOperations::TransformOperations(bool makeIdentity)

34 {

35 if (makeIdentity)

36 m_operations.append(IdentityTransformOperation::create());

37 }

38

39 bool TransformOperations::operator==(const TransformOperations& o) const

40 {

41 if (m_operations.size() != o.m_operations.size())

42 return false;

43

44 unsigned s = m_operations.size();

45 for (unsigned i = 0; i < s; i++) {

46 if (m_operations[i] != o.m_operations[i])

47 return false;

48 }

49

50 return true;

51 }

52

53 bool TransformOperations::operationsMatch(const TransformOperations& other) cons t

54 {

55 size_t numOperations = operations().size();

56 // If the sizes of the function lists don't match, the lists don't match

57 if (numOperations != other.operations().size())

58 return false;

59

60 // If the types of each function are not the same, the lists don't match

61 for (size_t i = 0; i < numOperations; ++i) {

62 if (!operations()[i]->isSameType(*other.operations()[i]))

63 return false;

64 }

65 return true;

66 }

67

68 TransformOperations TransformOperations::blendByMatchingOperations(const Transfo rmOperations& from, const double& progress) const

69 {

70 TransformOperations result;

71

72 unsigned fromSize = from.operations().size();

73 unsigned toSize = operations().size();

74 unsigned size = max(fromSize, toSize);

75 for (unsigned i = 0; i < size; i++) {

76 RefPtr<TransformOperation> fromOperation = (i < fromSize) ? from.operati ons()[i].get() : 0;

77 RefPtr<TransformOperation> toOperation = (i < toSize) ? operations()[i]. get() : 0;

78 RefPtr<TransformOperation> blendedOperation = toOperation ? toOperation- >blend(fromOperation.get(), progress) : (fromOperation ? fromOperation->blend(0, progress, true) : 0);

79 if (blendedOperation)

80 result.operations().append(blendedOperation);

81 else {

82 RefPtr<TransformOperation> identityOperation = IdentityTransformOper ation::create();

83 if (progress > 0.5)

84 result.operations().append(toOperation ? toOperation : identityO peration);

85 else

86 result.operations().append(fromOperation ? fromOperation : ident ityOperation);

87 }

88 }

89

90 return result;

91 }

92

93 TransformOperations TransformOperations::blendByUsingMatrixInterpolation(const T ransformOperations& from, double progress) const

94 {

95 TransformOperations result;

96 result.operations().append(InterpolatedTransformOperation::create(from, *thi s, progress));

97 return result;

98 }

99

100 TransformOperations TransformOperations::blend(const TransformOperations& from, double progress) const

101 {

102 if (from == *this)

103 return *this;

104

105 if (from.size() && from.operationsMatch(*this))

106 return blendByMatchingOperations(from, progress);

107

108 return blendByUsingMatrixInterpolation(from, progress);

109 }

110

111 TransformOperations TransformOperations::add(const TransformOperations& addend) const

112 {

113 TransformOperations result;

114 result.m_operations = operations();

115 result.m_operations.append(addend.operations());

116 return result;

117 }

118

119 } // namespace WebCore

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