зеркало из https://github.com/mozilla/gecko-dev.git
89 строки
3.1 KiB
C++
89 строки
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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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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#ifndef mozilla_image_ImageFactory_h
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#define mozilla_image_ImageFactory_h
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#include "nsCOMPtr.h"
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#include "nsProxyRelease.h"
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#include "nsStringFwd.h"
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class nsIRequest;
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class nsIURI;
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namespace mozilla {
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namespace image {
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class Image;
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class MultipartImage;
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class ProgressTracker;
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class ImageFactory {
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public:
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/**
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* Registers vars with Preferences. Should only be called on the main thread.
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*/
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static void Initialize();
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/**
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* Creates a new image with the given properties.
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* Can be called on or off the main thread.
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*
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* @param aRequest The associated request.
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* @param aProgressTracker A status tracker for the image to use.
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* @param aMimeType The mimetype of the image.
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* @param aURI The URI of the image.
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* @param aIsMultiPart Whether the image is part of a multipart request.
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* @param aInnerWindowId The window this image belongs to.
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*/
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static already_AddRefed<Image> CreateImage(nsIRequest* aRequest,
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ProgressTracker* aProgressTracker,
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const nsCString& aMimeType,
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nsIURI* aURI, bool aIsMultiPart,
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uint32_t aInnerWindowId);
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/**
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* Creates a new image which isn't associated with a URI or loaded through
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* the usual image loading mechanism.
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*
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* @param aMimeType The mimetype of the image.
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* @param aSizeHint The length of the source data for the image.
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*/
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static already_AddRefed<Image> CreateAnonymousImage(
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const nsCString& aMimeType, uint32_t aSizeHint = 0);
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/**
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* Creates a new multipart/x-mixed-replace image wrapper, and initializes it
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* with the first part. Subsequent parts should be passed to the existing
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* MultipartImage via MultipartImage::BeginTransitionToPart().
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*
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* @param aFirstPart An image containing the first part of the multipart
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* stream.
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* @param aProgressTracker A progress tracker for the multipart image.
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*/
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static already_AddRefed<MultipartImage> CreateMultipartImage(
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Image* aFirstPart, ProgressTracker* aProgressTracker);
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private:
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// Factory functions that create specific types of image containers.
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static already_AddRefed<Image> CreateRasterImage(
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nsIRequest* aRequest, ProgressTracker* aProgressTracker,
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const nsCString& aMimeType, nsIURI* aURI, uint32_t aImageFlags,
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uint32_t aInnerWindowId);
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static already_AddRefed<Image> CreateVectorImage(
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nsIRequest* aRequest, ProgressTracker* aProgressTracker,
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const nsCString& aMimeType, nsIURI* aURI, uint32_t aImageFlags,
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uint32_t aInnerWindowId);
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// This is a static factory class, so disallow instantiation.
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virtual ~ImageFactory() = 0;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_ImageFactory_h
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