зеркало из https://github.com/mozilla/pjs.git
130 строки
4.6 KiB
C++
130 строки
4.6 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 nsIScrollFrame_h___
|
|
#define nsIScrollFrame_h___
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsCoord.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsIScrollableViewProvider.h"
|
|
|
|
class nsIFrame;
|
|
class nsIBox;
|
|
class nsIPresContext;
|
|
class nsBoxLayoutState;
|
|
|
|
// IID for the nsIScrollableFrame interface
|
|
#define NS_ISCROLLABLE_FRAME_IID \
|
|
{ 0xc95f1831, 0xc372, 0x11d1, \
|
|
{ 0xb7, 0x21, 0x0, 0x64, 0x9, 0x92, 0xd8, 0xc9 } }
|
|
|
|
class nsIScrollableFrame : public nsIScrollableViewProvider {
|
|
public:
|
|
|
|
enum nsScrollPref {
|
|
Auto = 0,
|
|
NeverScroll,
|
|
AlwaysScroll,
|
|
AlwaysScrollVertical,
|
|
AlwaysScrollHorizontal
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISCROLLABLE_FRAME_IID)
|
|
|
|
/**
|
|
* Get the frame that we are scrolling within the scrollable frame.
|
|
* @result child frame
|
|
*/
|
|
NS_IMETHOD GetScrolledFrame(nsIPresContext* aPresContext,
|
|
nsIFrame *&aScrolledFrame) const = 0;
|
|
|
|
/**
|
|
* Return the actual sizes of all possible scrollbars. Returns 0 for scrollbar
|
|
* positions that don't have a scrollbar or where the scrollbar is not visible.
|
|
*/
|
|
virtual nsMargin GetActualScrollbarSizes() const = 0;
|
|
|
|
/**
|
|
* Return the sizes of all scrollbars assuming that any scrollbars that could
|
|
* be visible due to overflowing content, are.
|
|
*/
|
|
virtual nsMargin GetDesiredScrollbarSizes(nsBoxLayoutState* aState) = 0;
|
|
|
|
/**
|
|
* Query whether scroll bars should be displayed all the time, never or
|
|
* only when necessary.
|
|
* @return current scrollbar selection
|
|
*/
|
|
NS_IMETHOD GetScrollPreference(nsIPresContext* aPresContext, nsScrollPref* aScrollPreference) const = 0;
|
|
|
|
/**
|
|
* Get the position of the scrolled view.
|
|
*/
|
|
NS_IMETHOD GetScrollPosition(nsIPresContext* aContext, nscoord &aX, nscoord& aY) const=0;
|
|
|
|
/**
|
|
* Scroll the view to the given x,y, update's the scrollbar's thumb
|
|
* positions and the view's offset. Clamps the values to be
|
|
* legal. Updates the display based on aUpdateFlags.
|
|
* @param aX left edge to scroll to
|
|
* @param aY top edge to scroll to
|
|
* @param aUpdateFlags passed onto nsIViewManager->UpdateView()
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD ScrollTo(nsIPresContext* aContext, nscoord aX, nscoord aY, PRUint32 aFlags = NS_VMREFRESH_NO_SYNC)=0;
|
|
|
|
NS_IMETHOD GetScrollableView(nsIPresContext* aContext, nsIScrollableView** aResult)=0;
|
|
|
|
|
|
/**
|
|
* Set information about whether the vertical and horizontal scrollbars
|
|
* are currently visible
|
|
*/
|
|
NS_IMETHOD SetScrollbarVisibility(nsIPresContext* aPresContext,
|
|
PRBool aVerticalVisible,
|
|
PRBool aHorizontalVisible) = 0;
|
|
|
|
NS_IMETHOD GetScrollbarBox(PRBool aVertical, nsIBox** aResult) = 0;
|
|
|
|
NS_IMETHOD CurPosAttributeChanged(nsIPresContext* aPresContext,
|
|
nsIContent* aChild,
|
|
PRInt32 aModType) = 0;
|
|
};
|
|
|
|
#endif
|