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GUIScrollBar.h
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GUIScrollBar.h
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/****************************************************************************
** Copyright (C) 2011 Luka Horvat <redreaper132 at gmail.com>
** Copyright (C) 2011 Edward Lii <edward_iii at myway.com>
** Copyright (C) 2011 O. Bahri Gordebak <gordebak at gmail.com>
**
**
** This file may be used under the terms of the GNU General Public
** License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
**
****************************************************************************/
#ifndef GUISCROLLBAR_H
#define GUISCROLLBAR_H
#include "GUIObject.h"
//Constant integers containing the two possible orientations of the scrollbar.
const int ScrollBarHorizontal=0;
const int ScrollBarVertical=1;
class GUIScrollBar:public GUIObject{
public:
//The minimum value of the scrollbar.
int minValue;
//The maximum value of the scrollbar.
int maxValue;
//The step size when a small step is made.
int smallChange;
//The step size when a large step is made.
int largeChange;
//The orientation of the scrollbar.
int orientation;
private:
//
float thumbStart;
//
float thumbEnd;
float valuePerPixel;
//Float containing the start position when dragging the scrollbar.
float startDragPos;
int criticalValue;
int timer;
//Boolean if the scrollbar position has changed.
bool changed;
//Method that will calculate the position of the scrollbar.
void calcPos();
//Method that will render a scrollbar button.
//index:
//x1:
//y1:
//x2:
//y2:
//srcLeft:
//srcRight:
void renderScrollBarButton(int index,int x1,int y1,int x2,int y2,int srcLeft,int srcTop);
public:
GUIScrollBar(int left=0,int top=0,int width=0,int height=0,int orientation=0,
int value=0,int minValue=0,int maxValue=100,int smallChange=10,int largeChange=50,
bool enabled=true,bool visible=true):
GUIObject(left,top,width,height,0,NULL,value,enabled,visible),
minValue(minValue),maxValue(maxValue),smallChange(smallChange),largeChange(largeChange),orientation(orientation),
criticalValue(0),timer(0),changed(false)
{
//In the constructor we simply call calcPos().
calcPos();
}
//Method used to handle mouse and/or key events.
//x: The x mouse location.
//y: The y mouse location.
//enabled: Boolean if the parent is enabled or not.
//visible: Boolean if the parent is visible or not.
//processed: Boolean if the event has been processed (by the parent) or not.
//Returns: Boolean if the event is processed by the child.
virtual bool handleEvents(int x=0,int y=0,bool enabled=true,bool visible=true,bool processed=false);
//Method that will render the GUIScrollBar.
//x: The x location to draw the GUIObject. (x+left)
//y: The y location to draw the GUIObject. (y+top)
virtual void render(int x=0,int y=0);
};
#endif

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