pjs/view/public/nsICompositeListener.h

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/* -*- Mode: IDL; 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 Communicator.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Kin Blas
*
* 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 ***** */
#ifndef nsICompositeListener_h___
#define nsICompositeListener_h___
#include "nsISupports.h"
// forward declarations
class nsIView;
class nsIViewManager;
class nsIRenderingContext;
class nsIRegion;
struct nsRect;
// IID for the nsICompositeListener interface
// {5661ce55-7c42-11d3-009d-1d060b0f8baff}
#define NS_ICOMPOSITELISTENER_IID \
{ 0x5661ce55, 0x7c42, 0x11d3, { 0x9d, 0x1d, 0x0, 0x60, 0xb0, 0xf8, 0xba, 0xff } }
/**
* Provides a way for a client of an nsIViewManager to learn about composite
* events.
*/
class nsICompositeListener : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ICOMPOSITELISTENER_IID)
/**
* Notification before a view is refreshed.
* @param aViewManager view manager that "owns" the view. The view does NOT
* hold a reference to the view manager
* @param aView view to be refreshed.
* @param aContext rendering context to be used during the refresh.
* @param aRegion region of the view to be refreshed, IN DEVICE COORDINATES
* @param aUpdateFlags see bottom of nsIViewManager.h for description
* @result The result of the notification, NS_OK if no errors
*/
NS_IMETHOD WillRefreshRegion(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
nsIRegion *aRegion,
PRUint32 aUpdateFlags) = 0;
/**
* Notification after a view was refreshed.
* @param aViewManager view manager that "owns" the view. The view does NOT
* hold a reference to the view manager
* @param aView view that was refreshed.
* @param aContext rendering context that was used during the refresh.
* @param aRegion region of the view that was refreshed, IN DEVICE COORDINATES
* @param aUpdateFlags see bottom of nsIViewManager.h for description
* @result The result of the notification, NS_OK if no errors
*/
NS_IMETHOD DidRefreshRegion(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
nsIRegion *aRegion,
PRUint32 aUpdateFlags) = 0;
/**
* Notification before a view is refreshed.
* @param aViewManager view manager that "owns" the view. The view does NOT
* hold a reference to the view manager
* @param aView view to be refreshed.
* @param aContext rendering context to be used during the refresh.
* @param aRect rect region of the view to be refreshed.
* @param aUpdateFlags see bottom of nsIViewManager.h for description
* @result The result of the notification, NS_OK if no errors
*/
NS_IMETHOD WillRefreshRect(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
const nsRect *aRect,
PRUint32 aUpdateFlags) = 0;
/**
* Notification after a view was refreshed.
* @param aViewManager view manager that "owns" the view. The view does NOT
* hold a reference to the view manager
* @param aView view that was refreshed.
* @param aContext rendering context that was used during the refresh.
* @param aRect rect region of the view that was refreshed.
* @param aUpdateFlags see bottom of nsIViewManager.h for description
* @result The result of the notification, NS_OK if no errors
*/
NS_IMETHOD DidRefreshRect(nsIViewManager *aViewManager,
nsIView *aView,
nsIRenderingContext *aContext,
const nsRect *aRect,
PRUint32 aUpdateFlags) = 0;
};
#endif /* nsICompositeListener_h___ */