mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
115 lines
4.2 KiB
C++
115 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2001
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Stuart Parmenter <pavlov@netscape.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* class to notify frames of background and border image loads */
|
|
|
|
#include "nsStubImageDecoderObserver.h"
|
|
|
|
class nsIFrame;
|
|
class nsIURI;
|
|
|
|
#include "imgIRequest.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsAutoPtr.h"
|
|
|
|
/**
|
|
* Image loaders pass notifications for background and border image
|
|
* loading and animation on to the frames.
|
|
*
|
|
* Each frame's image loaders form a linked list.
|
|
*/
|
|
class nsImageLoader : public nsStubImageDecoderObserver
|
|
{
|
|
private:
|
|
nsImageLoader(nsIFrame *aFrame, PRUint32 aActions,
|
|
nsImageLoader *aNextLoader);
|
|
virtual ~nsImageLoader();
|
|
|
|
public:
|
|
/*
|
|
* Flags to specify actions that can be taken for the image at various
|
|
* times. Reflows always occur before redraws. "Decode" refers to one
|
|
* frame being available, whereas "load" refers to all the data being loaded
|
|
* from the network.
|
|
*/
|
|
enum {
|
|
ACTION_REDRAW_ON_DECODE = 0x01,
|
|
ACTION_REDRAW_ON_LOAD = 0x02,
|
|
};
|
|
static already_AddRefed<nsImageLoader>
|
|
Create(nsIFrame *aFrame, imgIRequest *aRequest,
|
|
PRUint32 aActions, nsImageLoader *aNextLoader);
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
// imgIDecoderObserver (override nsStubImageDecoderObserver)
|
|
NS_IMETHOD OnStartContainer(imgIRequest *aRequest, imgIContainer *aImage);
|
|
NS_IMETHOD OnStopFrame(imgIRequest *aRequest, PRUint32 aFrame);
|
|
NS_IMETHOD OnStopRequest(imgIRequest *aRequest, bool aLastPart);
|
|
NS_IMETHOD OnImageIsAnimated(imgIRequest *aRequest);
|
|
// Do not override OnDataAvailable since background images are not
|
|
// displayed incrementally; they are displayed after the entire image
|
|
// has been loaded.
|
|
// Note: Images referenced by the <img> element are displayed
|
|
// incrementally in nsImageFrame.cpp.
|
|
|
|
// imgIContainerObserver (override nsStubImageDecoderObserver)
|
|
NS_IMETHOD FrameChanged(imgIContainer *aContainer,
|
|
const nsIntRect *aDirtyRect);
|
|
|
|
void Destroy();
|
|
|
|
imgIRequest *GetRequest() { return mRequest; }
|
|
nsImageLoader *GetNextLoader() { return mNextLoader; }
|
|
|
|
private:
|
|
nsresult Load(imgIRequest *aImage);
|
|
/* if aDamageRect is nsnull, the whole frame is redrawn. */
|
|
void DoRedraw(const nsRect* aDamageRect);
|
|
|
|
nsIFrame *mFrame;
|
|
nsCOMPtr<imgIRequest> mRequest;
|
|
PRUint32 mActions;
|
|
nsRefPtr<nsImageLoader> mNextLoader;
|
|
|
|
// This is a boolean flag indicating whether or not the current image request
|
|
// has been registered with the refresh driver.
|
|
bool mRequestRegistered;
|
|
};
|