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GUIScrollBar.h
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GUIScrollBar.h
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/*
* Copyright (C) 2011-2012 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Me and My Shadow is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Me and My Shadow. 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(SDL_Renderer &renderer, int index, int x1, int y1, int x2, int y2, int srcLeft, int srcTop);
public:
GUIScrollBar(ImageManager& imageManager, SDL_Renderer& renderer,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(imageManager,renderer,left,top,width,height,NULL,value,enabled,visible),
minValue(minValue),maxValue(maxValue),smallChange(smallChange),largeChange(largeChange),orientation(orientation),
thumbStart(0.0f),thumbEnd(0.0f),valuePerPixel(0.0f),startDragPos(0.0f),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(SDL_Renderer&,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(SDL_Renderer& renderer, int x=0,int y=0,bool draw=true);
};
#endif

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