Source/core/layout/style/StyleFetchedImageSet.h - Issue 1045723009: Move core/layout/style to core/style

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Issue 1045723009: Move core/layout/style to core/style (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 5 years, 8 months ago

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1 /*

2 * Copyright (C) 2012 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. AND ITS CONTRIBUTORS ``AS IS''

14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

23 * THE POSSIBILITY OF SUCH DAMAGE.

24 */

25

26 #ifndef StyleFetchedImageSet_h

27 #define StyleFetchedImageSet_h

28

29 #include "core/fetch/ImageResourceClient.h"

30 #include "core/fetch/ResourcePtr.h"

31 #include "core/layout/style/StyleImage.h"

32 #include "platform/geometry/LayoutSize.h"

33

34 namespace blink {

35

36 class ImageResource;

37 class CSSImageSetValue;

38

39 // This class keeps one cached image and has access to a set of alternatives.

40

41 class StyleFetchedImageSet final : public StyleImage, private ImageResourceClien t {

42 WTF_MAKE_FAST_ALLOCATED(StyleFetchedImageSet);

43 public:

44 static PassRefPtr<StyleFetchedImageSet> create(ImageResource* image, float i mageScaleFactor, CSSImageSetValue* value)

45 {

46 return adoptRef(new StyleFetchedImageSet(image, imageScaleFactor, value) );

47 }

48 virtual ~StyleFetchedImageSet();

49

50 virtual PassRefPtrWillBeRawPtr<CSSValue> cssValue() const override;

51

52 // FIXME: This is used by StyleImage for equals comparison, but this impleme ntation

53 // only looks at the image from the set that we have loaded. I'm not sure if that is

54 // meaningful enough or not.

55 virtual WrappedImagePtr data() const override { return m_bestFitImage.get(); }

56

57 void clearImageSetValue() { m_imageSetValue = 0; }

58

59 virtual bool canRender(const LayoutObject&, float multiplier) const override ;

60 virtual bool isLoaded() const override;

61 virtual bool errorOccurred() const override;

62 virtual LayoutSize imageSize(const LayoutObject*, float multiplier) const ov erride;

63 virtual bool imageHasRelativeWidth() const override;

64 virtual bool imageHasRelativeHeight() const override;

65 virtual void computeIntrinsicDimensions(const LayoutObject*, Length& intrins icWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) override;

66 virtual bool usesImageContainerSize() const override;

67 virtual void setContainerSizeForLayoutObject(const LayoutObject*, const IntS ize&, float) override;

68 virtual void addClient(LayoutObject*) override;

69 virtual void removeClient(LayoutObject*) override;

70 virtual PassRefPtr<Image> image(LayoutObject*, const IntSize&) const overrid e;

71 virtual float imageScaleFactor() const override { return m_imageScaleFactor; }

72 virtual bool knownToBeOpaque(const LayoutObject*) const override;

73 virtual ImageResource* cachedImage() const override { return m_bestFitImage. get(); }

74

75 private:

76 StyleFetchedImageSet(ImageResource, float imageScaleFactor, CSSImageSetValu e);

77

78 ResourcePtr<ImageResource> m_bestFitImage;

79 float m_imageScaleFactor;

80

81 // FIXME: oilpan: Change to RawPtrWillBeMember when moving this class onto o ilpan heap.

82 // Also add "if !ENABLE(OILPAN)" around clearImageSetValue above as well as around its

83 // caller since it should not be needed once both of the objects are on the heap and

84 // oilpan is enabled.

85 CSSImageSetValue* m_imageSetValue; // Not retained; it owns us.

86 };

87

88 DEFINE_STYLE_IMAGE_TYPE_CASTS(StyleFetchedImageSet, isImageResourceSet());

89

90 } // namespace blink

91

92 #endif // StyleFetchedImageSet_h

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