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nsScrollbar.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is mozilla.org code.
00017  *
00018  * The Initial Developer of the Original Code is
00019  *  Zack Rusin <zack@kde.org>.
00020  * Portions created by the Initial Developer are Copyright (C) 2004
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *   Lars Knoll <knoll@kde.org>
00025  *   Zack Rusin <zack@kde.org>
00026  *
00027  * Alternatively, the contents of this file may be used under the terms of
00028  * either the GNU General Public License Version 2 or later (the "GPL"), or
00029  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00030  * in which case the provisions of the GPL or the LGPL are applicable instead
00031  * of those above. If you wish to allow use of your version of this file only
00032  * under the terms of either the GPL or the LGPL, and not to allow others to
00033  * use your version of this file under the terms of the MPL, indicate your
00034  * decision by deleting the provisions above and replace them with the notice
00035  * and other provisions required by the GPL or the LGPL. If you do not delete
00036  * the provisions above, a recipient may use your version of this file under
00037  * the terms of any one of the MPL, the GPL or the LGPL.
00038  *
00039  * ***** END LICENSE BLOCK ***** */
00040 #ifndef nsScrollbar_h__
00041 #define nsScrollbar_h__
00042 
00043 #include "nsCommonWidget.h"
00044 #include "nsINativeScrollbar.h"
00045 #include <qscrollbar.h>
00046 
00047 //=============================================================================
00048 // nsQScrollBar class:
00049 //  Customizes QScrollBar for use by XPFE
00050 //=============================================================================
00051 class nsQScrollBar : public QScrollBar
00052 {
00053     Q_OBJECT
00054 public:
00055     nsQScrollBar(int aMinValue, int aMaxValue, int aLineStep,
00056                  int aPageStep, int aValue, Orientation aOrientation,
00057                  QWidget *aParent, const char *aName = 0);
00058 
00059     void ScrollBarMoved(int aMessage,int aValue = -1);
00060 
00061 public slots:
00062     void slotValueChanged(int aValue);
00063 private:
00064 };
00065 
00066 //=============================================================================
00067 // nsScrollBar class:
00068 //  the XPFE Scrollbar
00069 //=============================================================================
00070 class nsNativeScrollbar : public nsCommonWidget,
00071                           public nsINativeScrollbar
00072 {
00073 public:
00074     nsNativeScrollbar();
00075     virtual ~nsNativeScrollbar();
00076 
00077     // nsISupports
00078     NS_DECL_ISUPPORTS_INHERITED
00079     NS_DECL_NSINATIVESCROLLBAR
00080 
00081     // nsIScrollBar implementation
00082 
00083     virtual PRBool OnScroll(nsScrollbarEvent &aEvent,PRUint32 cPos);
00084 
00085     virtual PRBool IsScrollBar() const { return PR_TRUE; }
00086 protected:
00087     QWidget *createQWidget(QWidget *parent, nsWidgetInitData *aInitData);
00088 
00089 
00090 private:
00091     QScrollBar::Orientation mOrientation;
00092     int mMaxValue;
00093     int mLineStep;
00094     int mPageStep;
00095     int mValue;
00096     PRUint32 mNsSBID;
00097 };
00098 
00099 #endif // nsScrollbar_h__