mirror of
https://github.com/mozilla/gecko-dev.git
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140 lines
4.6 KiB
C++
140 lines
4.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsIScrollbar_h__
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#define nsIScrollbar_h__
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#include "nsIWidget.h"
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// {18032AD2-B265-11d1-AA2A-000000000000}
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#define NS_ISCROLLBAR_IID \
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{ 0x18032ad2, 0xb265, 0x11d1, \
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{ 0xaa, 0x2a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }
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/**
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*
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* Scrollbar, converts mouse input into values that can be used
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* to shift the contents of a window.
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*
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*/
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class nsIScrollbar : public nsISupports
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{
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISCROLLBAR_IID)
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/**
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* Set the scrollbar range
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* @param aEndRange set range for scrollbar from 0 to aEndRange
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* @result NS_Ok if no errors
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*
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*/
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NS_IMETHOD SetMaxRange(PRUint32 aEndRange) = 0;
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/**
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* Get the scrollbar range
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* @return the upper end of the scrollbar range
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* @result NS_Ok if no errors
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*/
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NS_IMETHOD GetMaxRange(PRUint32& aMaxRange) = 0;
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/**
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* Set the thumb position.
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* @param aPos a value between (startRange) and (endRange - thumbSize)
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* @result NS_Ok if no errors
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*
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*/
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NS_IMETHOD SetPosition(PRUint32 aPos) = 0;
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/**
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* Get the thumb position.
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* @return a value between (startRange) and (endRange - thumbSize)
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* @result NS_Ok if no errors
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*
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*/
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NS_IMETHOD GetPosition(PRUint32& aPos) = 0;
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/**
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* Set the thumb size.
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* @param aSize size of the thumb. Must be a value between
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* startRange and endRange
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* @result NS_Ok if no errors
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*/
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NS_IMETHOD SetThumbSize(PRUint32 aSize) = 0;
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/**
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* Get the thumb size.
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* @return size of the thumb. The value is between
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* startRange and endRange
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* @result NS_Ok if no errors
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*/
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NS_IMETHOD GetThumbSize(PRUint32& aSize) = 0;
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/**
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* Set the line increment.
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* @param aSize size of the line increment. The value must
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* be between startRange and endRange
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* @result NS_Ok if no errors
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*/
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NS_IMETHOD SetLineIncrement(PRUint32 aSize) = 0;
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/**
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* Get the line increment.
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* @return size of the line increment. The value is
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* between startRange and endRange
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* @result NS_Ok if no errors
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*/
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NS_IMETHOD GetLineIncrement(PRUint32& aSize) = 0;
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/**
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* Set all scrollbar parameters at once
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* @param aMaxRange set range for scrollbar from 0 to aMaxRange
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* @param aThumbSize size of the thumb. Must be a value between
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* startRange and endRange
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* @param aPosition a value between (startRange) and (endRange - thumbSize)
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* @param aLineIncrement size of the line increment. The value must
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* be between startRange and endRange
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* @result NS_Ok if no errors
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*/
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NS_IMETHOD SetParameters(PRUint32 aMaxRange, PRUint32 aThumbSize,
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PRUint32 aPosition, PRUint32 aLineIncrement) = 0;
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};
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#endif // nsIScrollbar_h__
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