Source/WebCore/rendering/TextAutosizer.h - Issue 12326104: Merge 142866

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Issue 12326104: Merge 142866 (Closed) Base URL: http://svn.webkit.org/repository/webkit/branches/chromium/1410/

Patch Set: Created 7 years, 10 months ago

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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	5 * modification, are permitted provided that the following conditions

6 * are met:	6 * are met:

7 *	7 *

8 * 1. Redistributions of source code must retain the above copyright	8 * 1. 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 * 2. Redistributions in binary form must reproduce the above copyright	10 * 2. Redistributions in binary form must reproduce the above copyright

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54 static float computeAutosizedFontSize(float specifiedSize, float multiplier) ;	54 static float computeAutosizedFontSize(float specifiedSize, float multiplier) ;

55	55

56 private:	56 private:

57 enum TraversalDirection {	57 enum TraversalDirection {

58 FirstToLast,	58 FirstToLast,

59 LastToFirst	59 LastToFirst

60 };	60 };

61	61

62 explicit TextAutosizer(Document*);	62 explicit TextAutosizer(Document*);

63	63

	64 void processClusterInternal(TextAutosizingClusterInfo&, RenderBlock* contain er, RenderObject* subtreeRoot, const TextAutosizingWindowInfo&, float textWidth, bool shouldBeAutosized);

64 void processCluster(TextAutosizingClusterInfo&, RenderBlock* container, Rend erObject* subtreeRoot, const TextAutosizingWindowInfo&);	65 void processCluster(TextAutosizingClusterInfo&, RenderBlock* container, Rend erObject* subtreeRoot, const TextAutosizingWindowInfo&);

	66 void processCompositeCluster(Vector<TextAutosizingClusterInfo>&, const TextA utosizingWindowInfo&);

65 void processContainer(float multiplier, RenderBlock* container, TextAutosizi ngClusterInfo&, RenderObject* subtreeRoot, const TextAutosizingWindowInfo&);	67 void processContainer(float multiplier, RenderBlock* container, TextAutosizi ngClusterInfo&, RenderObject* subtreeRoot, const TextAutosizingWindowInfo&);

66	68

67 void setMultiplier(RenderObject*, float);	69 void setMultiplier(RenderObject*, float);

68	70

69 static bool isAutosizingContainer(const RenderObject*);	71 static bool isAutosizingContainer(const RenderObject*);

70 static bool isNarrowDescendant(const RenderBlock*, TextAutosizingClusterInfo & parentClusterInfo);	72 static bool isNarrowDescendant(const RenderBlock*, TextAutosizingClusterInfo & parentClusterInfo);

71 static bool isWiderDescendant(const RenderBlock*, const TextAutosizingCluste rInfo& parentClusterInfo);	73 static bool isWiderDescendant(const RenderBlock*, const TextAutosizingCluste rInfo& parentClusterInfo);

72 static bool isIndependentDescendant(const RenderBlock*);	74 static bool isIndependentDescendant(const RenderBlock*);

73 static bool isAutosizingCluster(const RenderBlock*, TextAutosizingClusterInf o& parentClusterInfo);	75 static bool isAutosizingCluster(const RenderBlock*, TextAutosizingClusterInf o& parentClusterInfo);

74	76

75 static bool containerShouldBeAutosized(const RenderBlock* container);	77 static bool containerShouldBeAutosized(const RenderBlock* container);

76 static bool containerContainsOneOfTags(const RenderBlock* cluster, const Vec tor<QualifiedName>& tags);	78 static bool containerContainsOneOfTags(const RenderBlock* cluster, const Vec tor<QualifiedName>& tags);

77 static bool containerIsRowOfLinks(const RenderObject* container);	79 static bool containerIsRowOfLinks(const RenderObject* container);

78 static bool contentHeightIsConstrained(const RenderBlock* container);	80 static bool contentHeightIsConstrained(const RenderBlock* container);

79 static bool clusterShouldBeAutosized(TextAutosizingClusterInfo&, float block Width);	81 static bool clusterShouldBeAutosized(TextAutosizingClusterInfo&, float block Width);

	82 static bool compositeClusterShouldBeAutosized(Vector<TextAutosizingClusterIn fo>&, float blockWidth);

80 static void measureDescendantTextWidth(const RenderBlock* container, TextAut osizingClusterInfo&, float minTextWidth, float& textWidth);	83 static void measureDescendantTextWidth(const RenderBlock* container, TextAut osizingClusterInfo&, float minTextWidth, float& textWidth);

81	84

82 // Use to traverse the tree of descendants, excluding descendants of contain ers (but returning the containers themselves).	85 // Use to traverse the tree of descendants, excluding descendants of contain ers (but returning the containers themselves).

83 static RenderObject* nextInPreOrderSkippingDescendantsOfContainers(const Ren derObject, const RenderObject stayWithin);	86 static RenderObject* nextInPreOrderSkippingDescendantsOfContainers(const Ren derObject, const RenderObject stayWithin);

84	87

85 static const RenderBlock* findDeepestBlockContainingAllText(const RenderBloc k* cluster);	88 static const RenderBlock* findDeepestBlockContainingAllText(const RenderBloc k* cluster);

86	89

87 // Depending on the traversal direction specified, finds the first or the la st leaf text node child that doesn't	90 // Depending on the traversal direction specified, finds the first or the la st leaf text node child that doesn't

88 // belong to any cluster.	91 // belong to any cluster.

89 static const RenderObject* findFirstTextLeafNotInCluster(const RenderObject* , size_t& depth, TraversalDirection);	92 static const RenderObject* findFirstTextLeafNotInCluster(const RenderObject* , size_t& depth, TraversalDirection);

90	93

91 Document* m_document;	94 Document* m_document;

92 };	95 };

93	96

94 } // namespace WebCore	97 } // namespace WebCore

95	98

96 #endif // ENABLE(TEXT_AUTOSIZING)	99 #endif // ENABLE(TEXT_AUTOSIZING)

97	100

98 #endif // TextAutosizer_h	101 #endif // TextAutosizer_h

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