mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-29 15:52:07 +00:00
119 lines
4.4 KiB
C++
119 lines
4.4 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) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* 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 nsIViewObserver_h___
|
|
#define nsIViewObserver_h___
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsEvent.h"
|
|
#include "nsColor.h"
|
|
#include "nsRect.h"
|
|
|
|
class nsIRenderingContext;
|
|
class nsGUIEvent;
|
|
|
|
#define NS_IVIEWOBSERVER_IID \
|
|
{ 0x0f4bc34a, 0xc93b, 0x4699, \
|
|
{ 0xb6, 0xc2, 0xb3, 0xca, 0x9e, 0xe4, 0x6c, 0x95 } }
|
|
|
|
class nsIViewObserver : public nsISupports
|
|
{
|
|
public:
|
|
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IVIEWOBSERVER_IID)
|
|
|
|
/* called when the observer needs to paint. This paints the entire
|
|
* frame subtree rooted at the view, including frame subtrees from
|
|
* subdocuments.
|
|
* @param aRenderingContext rendering context to paint to
|
|
* @param aDirtyRegion the region to be painted, in the coordinates of aRootView
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD Paint(nsIView* aRootView,
|
|
nsIRenderingContext* aRenderingContext,
|
|
const nsRegion& aDirtyRegion) = 0;
|
|
|
|
/**
|
|
* @see nsLayoutUtils::ComputeRepaintRegionForCopy
|
|
*/
|
|
NS_IMETHOD ComputeRepaintRegionForCopy(nsIView* aRootView,
|
|
nsIView* aMovingView,
|
|
nsPoint aDelta,
|
|
const nsRect& aCopyRect,
|
|
nsRegion* aRepaintRegion) = 0;
|
|
|
|
/* called when the observer needs to handle an event
|
|
* @param aView - where to start processing the event; the root view,
|
|
* or the view that's currently capturing this sort of event; must be a view
|
|
* for this presshell
|
|
* @param aEvent - event notification
|
|
* @param aEventStatus - out parameter for event handling
|
|
* status
|
|
* @param aHandled - whether the correct frame was found to
|
|
* handle the event
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD HandleEvent(nsIView* aView,
|
|
nsGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus) = 0;
|
|
|
|
/* called when the view has been resized and the
|
|
* content within the view needs to be reflowed.
|
|
* @param aWidth - new width of view
|
|
* @param aHeight - new height of view
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD ResizeReflow(nsIView * aView, nscoord aWidth, nscoord aHeight) = 0;
|
|
|
|
/**
|
|
* Hack to find out if the view observer is itself visible, in lieu
|
|
* of having the view trees linked.
|
|
*/
|
|
NS_IMETHOD_(PRBool) IsVisible() = 0;
|
|
|
|
/**
|
|
* Notify the observer that we're about to start painting. This
|
|
* gives the observer a chance to make some last-minute invalidates
|
|
* and geometry changes if it wants to.
|
|
*/
|
|
NS_IMETHOD_(void) WillPaint() = 0;
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(nsIViewObserver, NS_IVIEWOBSERVER_IID)
|
|
|
|
#endif
|