2010-08-13 21:09:48 -07:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2012-05-21 04:12:37 -07:00
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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2010-08-13 21:09:48 -07:00
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#ifndef MOZILLA_IMAGELIB_IMAGE_H_
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#define MOZILLA_IMAGELIB_IMAGE_H_
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#include "imgIContainer.h"
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#include "imgStatusTracker.h"
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namespace mozilla {
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2012-01-06 08:02:27 -08:00
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namespace image {
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2010-08-13 21:09:48 -07:00
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class Image : public imgIContainer
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{
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public:
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2010-11-17 12:39:23 -08:00
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// From NS_DECL_IMGICONTAINER:
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NS_IMETHOD GetAnimationMode(uint16_t *aAnimationMode);
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NS_IMETHOD SetAnimationMode(uint16_t aAnimationMode);
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2010-11-17 12:39:23 -08:00
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2010-08-23 15:44:07 -07:00
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imgStatusTracker& GetStatusTracker() { return *mStatusTracker; }
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2010-08-13 21:09:48 -07:00
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2010-08-13 21:09:49 -07:00
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/**
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* Flags for Image initialization.
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*
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* Meanings:
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*
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* INIT_FLAG_NONE: Lack of flags
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*
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* INIT_FLAG_DISCARDABLE: The container should be discardable
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*
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* INIT_FLAG_DECODE_ON_DRAW: The container should decode on draw rather than
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* decoding on load.
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*
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* INIT_FLAG_MULTIPART: The container will be used to display a stream of
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* images in a multipart channel. If this flag is set, INIT_FLAG_DISCARDABLE
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* and INIT_FLAG_DECODE_ON_DRAW must not be set.
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*/
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static const uint32_t INIT_FLAG_NONE = 0x0;
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static const uint32_t INIT_FLAG_DISCARDABLE = 0x1;
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static const uint32_t INIT_FLAG_DECODE_ON_DRAW = 0x2;
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static const uint32_t INIT_FLAG_MULTIPART = 0x4;
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/**
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* Creates a new image container.
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*
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* @param aObserver Observer to send decoder and animation notifications to.
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* @param aMimeType The mimetype of the image.
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* @param aFlags Initialization flags of the INIT_FLAG_* variety.
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*/
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virtual nsresult Init(imgIDecoderObserver* aObserver,
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const char* aMimeType,
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const char* aURIString,
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uint32_t aFlags) = 0;
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/**
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* The rectangle defining the location and size of the currently displayed
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* frame.
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*/
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virtual void GetCurrentFrameRect(nsIntRect& aRect) = 0;
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/**
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* The size, in bytes, occupied by the significant data portions of the image.
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* This includes both compressed source data and decoded frames.
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*/
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uint32_t SizeOfData();
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/**
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* The components that make up SizeOfData().
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*/
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virtual size_t HeapSizeOfSourceWithComputedFallback(nsMallocSizeOfFun aMallocSizeOf) const = 0;
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virtual size_t HeapSizeOfDecodedWithComputedFallback(nsMallocSizeOfFun aMallocSizeOf) const = 0;
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virtual size_t NonHeapSizeOfDecoded() const = 0;
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virtual size_t OutOfProcessSizeOfDecoded() const = 0;
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2010-08-22 19:30:45 -07:00
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// Mimetype translation
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enum eDecoderType {
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eDecoderType_png = 0,
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eDecoderType_gif = 1,
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eDecoderType_jpeg = 2,
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eDecoderType_bmp = 3,
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eDecoderType_ico = 4,
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eDecoderType_icon = 5,
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eDecoderType_unknown = 6
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};
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static eDecoderType GetDecoderType(const char *aMimeType);
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2010-09-07 17:33:02 -07:00
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void IncrementAnimationConsumers();
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void DecrementAnimationConsumers();
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#ifdef DEBUG
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uint32_t GetAnimationConsumers() { return mAnimationConsumers; }
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#endif
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void SetInnerWindowID(uint64_t aInnerWindowId) {
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mInnerWindowId = aInnerWindowId;
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}
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uint64_t InnerWindowID() const { return mInnerWindowId; }
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2011-09-28 23:19:26 -07:00
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bool HasError() { return mError; }
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2010-08-13 21:09:48 -07:00
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protected:
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Image(imgStatusTracker* aStatusTracker);
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2010-09-07 17:33:02 -07:00
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/**
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* Decides whether animation should or should not be happening,
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* and makes sure the right thing is being done.
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*/
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virtual void EvaluateAnimation();
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virtual nsresult StartAnimation() = 0;
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virtual nsresult StopAnimation() = 0;
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2012-08-22 08:56:38 -07:00
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uint64_t mInnerWindowId;
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// Member data shared by all implementations of this abstract class
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nsAutoPtr<imgStatusTracker> mStatusTracker;
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uint32_t mAnimationConsumers;
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uint16_t mAnimationMode; // Enum values in imgIContainer
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bool mInitialized:1; // Have we been initalized?
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bool mAnimating:1; // Are we currently animating?
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bool mError:1; // Error handling
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/**
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* Extended by child classes, if they have additional
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* conditions for being able to animate
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*/
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virtual bool ShouldAnimate() {
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return mAnimationConsumers > 0 && mAnimationMode != kDontAnimMode;
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}
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};
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2012-01-06 08:02:27 -08:00
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} // namespace image
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2010-08-13 21:09:48 -07:00
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} // namespace mozilla
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#endif // MOZILLA_IMAGELIB_IMAGE_H_
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