1 | /* |
2 | * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
3 | * (C) 2000 Antti Koivisto (koivisto@kde.org) |
4 | * (C) 2000 Dirk Mueller (mueller@kde.org) |
5 | * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. |
6 | * |
7 | * This library is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU Library General Public |
9 | * License as published by the Free Software Foundation; either |
10 | * version 2 of the License, or (at your option) any later version. |
11 | * |
12 | * This library is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | * Library General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU Library General Public License |
18 | * along with this library; see the file COPYING.LIB. If not, write to |
19 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | * Boston, MA 02110-1301, USA. |
21 | * |
22 | */ |
23 | |
24 | #pragma once |
25 | |
26 | #include "CSSValue.h" |
27 | #include "FloatSize.h" |
28 | #include "Image.h" |
29 | #include <wtf/RefCounted.h> |
30 | #include <wtf/RefPtr.h> |
31 | #include <wtf/TypeCasts.h> |
32 | |
33 | namespace WebCore { |
34 | |
35 | class CachedImage; |
36 | class CachedResourceLoader; |
37 | class CSSValue; |
38 | class RenderElement; |
39 | class RenderObject; |
40 | struct ResourceLoaderOptions; |
41 | |
42 | typedef const void* WrappedImagePtr; |
43 | |
44 | class StyleImage : public RefCounted<StyleImage> { |
45 | public: |
46 | virtual ~StyleImage() = default; |
47 | |
48 | virtual bool operator==(const StyleImage& other) const = 0; |
49 | |
50 | virtual Ref<CSSValue> cssValue() const = 0; |
51 | |
52 | virtual bool canRender(const RenderElement*, float /*multiplier*/) const { return true; } |
53 | virtual bool isPending() const = 0; |
54 | virtual void load(CachedResourceLoader&, const ResourceLoaderOptions&) = 0; |
55 | virtual bool isLoaded() const { return true; } |
56 | virtual bool errorOccurred() const { return false; } |
57 | virtual FloatSize imageSize(const RenderElement*, float multiplier) const = 0; |
58 | virtual void computeIntrinsicDimensions(const RenderElement*, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio) = 0; |
59 | virtual bool imageHasRelativeWidth() const = 0; |
60 | virtual bool imageHasRelativeHeight() const = 0; |
61 | virtual bool usesImageContainerSize() const = 0; |
62 | virtual void setContainerContextForRenderer(const RenderElement&, const FloatSize&, float) = 0; |
63 | virtual void addClient(RenderElement*) = 0; |
64 | virtual void removeClient(RenderElement*) = 0; |
65 | virtual RefPtr<Image> image(RenderElement*, const FloatSize&) const = 0; |
66 | virtual WrappedImagePtr data() const = 0; |
67 | virtual float imageScaleFactor() const { return 1; } |
68 | virtual bool knownToBeOpaque(const RenderElement*) const = 0; |
69 | virtual CachedImage* cachedImage() const { return 0; } |
70 | |
71 | ALWAYS_INLINE bool isCachedImage() const { return m_isCachedImage; } |
72 | ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; } |
73 | |
74 | protected: |
75 | StyleImage() |
76 | : m_isCachedImage(false) |
77 | , m_isGeneratedImage(false) |
78 | { |
79 | } |
80 | bool m_isCachedImage : 1; |
81 | bool m_isGeneratedImage : 1; |
82 | }; |
83 | |
84 | } // namespace WebCore |
85 | |
86 | #define SPECIALIZE_TYPE_TRAITS_STYLE_IMAGE(ToClassName, predicate) \ |
87 | SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToClassName) \ |
88 | static bool isType(const WebCore::StyleImage& image) { return image.predicate(); } \ |
89 | SPECIALIZE_TYPE_TRAITS_END() |
90 | |