1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_ImageDocument_h
#define mozilla_dom_ImageDocument_h
#include "imgINotificationObserver.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/MediaDocument.h"
#include "nsIDOMEventListener.h"
namespace mozilla {
enum class StyleImageRendering : uint8_t;
struct IntrinsicSize;
} // namespace mozilla
namespace mozilla::dom {
class HTMLImageElement;
class ImageDocument final : public MediaDocument,
public imgINotificationObserver,
public nsIDOMEventListener {
public:
ImageDocument();
NS_DECL_ISUPPORTS_INHERITED
enum MediaDocumentKind MediaDocumentKind() const override {
return MediaDocumentKind::Image;
}
nsresult Init(nsIPrincipal* aPrincipal,
nsIPrincipal* aPartitionedPrincipal) override;
nsresult StartDocumentLoad(const char* aCommand, nsIChannel* aChannel,
nsILoadGroup* aLoadGroup, nsISupports* aContainer,
nsIStreamListener** aDocListener,
bool aReset = true) override;
void SetScriptGlobalObject(nsIScriptGlobalObject*) override;
void Destroy() override;
void OnPageShow(bool aPersisted, EventTarget* aDispatchStartTarget,
bool aOnlySystemGroup = false) override;
NS_DECL_IMGINOTIFICATIONOBSERVER
// nsIDOMEventListener
NS_DECL_NSIDOMEVENTLISTENER
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ImageDocument, MediaDocument)
friend class ImageListener;
void DefaultCheckOverflowing();
// WebIDL API
JSObject* WrapNode(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
bool ImageIsOverflowing() const {
return ImageIsOverflowingHorizontally() || ImageIsOverflowingVertically();
}
bool ImageIsOverflowingVertically() const {
return mImageHeight > mVisibleHeight;
}
bool ImageIsOverflowingHorizontally() const {
return mImageWidth > mVisibleWidth;
}
bool ImageIsResized() const { return mImageIsResized; }
// ShrinkToFit is called from xpidl methods and we don't have a good
// way to mark those MOZ_CAN_RUN_SCRIPT yet.
MOZ_CAN_RUN_SCRIPT_BOUNDARY void ShrinkToFit();
void RestoreImage();
void NotifyPossibleTitleChange(bool aBoundTitleElement) override;
void UpdateRemoteStyle(StyleImageRendering aImageRendering);
protected:
virtual ~ImageDocument();
nsresult CreateSyntheticDocument() override;
nsresult CheckOverflowing(bool changeState);
void UpdateTitleAndCharset();
void ScrollImageTo(int32_t aX, int32_t aY);
float GetRatio() const {
return std::min(mVisibleWidth / mImageWidth, mVisibleHeight / mImageHeight);
}
bool IsSiteSpecific();
void ResetZoomLevel();
float GetZoomLevel();
void CheckFullZoom();
float GetResolution();
void UpdateSizeFromLayout();
enum eModeClasses {
eNone,
eShrinkToFit,
eOverflowingVertical, // And maybe horizontal too.
eOverflowingHorizontalOnly,
eIsInObjectOrEmbed
};
void SetModeClass(eModeClasses mode);
void OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage);
void OnLoadComplete(imgIRequest* aRequest, nsresult aStatus);
void OnHasTransparency();
void MaybeSendResultToEmbedder(nsresult aResult);
RefPtr<HTMLImageElement> mImageContent;
float mVisibleWidth;
float mVisibleHeight;
int32_t mImageWidth;
int32_t mImageHeight;
// mImageIsResized is true if the image is currently resized
bool mImageIsResized;
// mShouldResize is true if the image should be resized when it doesn't fit
// mImageIsResized cannot be true when this is false, but mImageIsResized
// can be false when this is true
bool mShouldResize;
bool mFirstResize;
// mObservingImageLoader is true while the observer is set.
bool mObservingImageLoader;
bool mTitleUpdateInProgress;
bool mHasCustomTitle;
// True iff embedder is either <object> or <embed>.
bool mIsInObjectOrEmbed;
float mOriginalZoomLevel;
float mOriginalResolution;
};
inline ImageDocument* Document::AsImageDocument() {
MOZ_ASSERT(IsImageDocument());
return static_cast<ImageDocument*>(this);
}
inline const ImageDocument* Document::AsImageDocument() const {
MOZ_ASSERT(IsImageDocument());
return static_cast<const ImageDocument*>(this);
}
} // namespace mozilla::dom
#endif /* mozilla_dom_ImageDocument_h */
|
