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/*
* Slider.cpp
*
* Created on: Mar 3, 2012
* Author: Simon
*/
#include <iostream>
#include "Slider.h"
#include "Colour.h"
namespace ui {
Slider::Slider(Point position, Point size, int steps):
Component(position, size),
sliderSteps(steps),
sliderPosition(0),
isMouseDown(false),
bgGradient(NULL)
{
// TODO Auto-generated constructor stub
}
void Slider::updatePosition(int position)
{
if(position < 3)
position = 3;
if(position > Size.X-3)
position = Size.X-3;
float fPosition = position-3;
float fSize = Size.X-6;
float fSteps = sliderSteps;
float fSliderPosition = (fPosition/fSize)*sliderSteps;//position;//((x-3)/(Size.X-6))*sliderSteps;
int newSliderPosition = fSliderPosition;
if(newSliderPosition == sliderPosition)
return;
sliderPosition = newSliderPosition;
if(actionCallback)
{
actionCallback->ValueChangedCallback(this);
}
}
void Slider::OnMouseMoved(int x, int y, int dx, int dy)
{
if(isMouseDown)
{
updatePosition(x);
}
}
void Slider::OnMouseClick(int x, int y, unsigned button)
{
isMouseDown = true;
updatePosition(x);
}
void Slider::OnMouseUp(int x, int y, unsigned button)
{
if(isMouseDown)
{
isMouseDown = false;
}
}
int Slider::GetValue()
{
return sliderPosition;
}
void Slider::SetColour(Colour col1, Colour col2)
{
if(bgGradient)
free(bgGradient);
bgGradient = (unsigned char*)Graphics::GenerateGradient(
(pixel[2]){PIXRGB(col1.Red, col1.Green, col1.Blue), PIXRGB(col2.Red, col2.Green, col2.Blue)},
(float[2]){0.0f, 1.0f}, 2, Size.X-6);
}
void Slider::SetValue(int value)
{
if(value < 0)
value = 0;
if(value > sliderSteps)
value = sliderSteps;
sliderPosition = value;
}
void Slider::Draw(const Point& screenPos)
{
Graphics * g = Engine::Ref().g;
//g->drawrect(screenPos.X, screenPos.Y, Size.X, Size.Y, 255, 255, 255, 255);
if(bgGradient)
{
for (int j = 3; j < Size.Y-6; j++)
for (int i = 3; i < Size.X-6; i++)
g->drawpixel(screenPos.X+i+2, screenPos.Y+j+2, bgGradient[(i-3)*3], bgGradient[(i-3)*3+1], bgGradient[(i-3)*3+2], 255);
}
g->drawrect(screenPos.X+3, screenPos.Y+3, Size.X-6, Size.Y-6, 255, 255, 255, 255);
float fPosition = sliderPosition;
float fSize = Size.X-6;
float fSteps = sliderSteps;
float fSliderX = (fSize/fSteps)*fPosition;//sliderPosition;//((Size.X-6)/sliderSteps)*sliderPosition;
int sliderX = fSliderX;
sliderX += 3;
g->fillrect(screenPos.X+sliderX-2, screenPos.Y+1, 4, Size.Y-2, 20, 20, 20, 255);
g->drawrect(screenPos.X+sliderX-2, screenPos.Y+1, 4, Size.Y-2, 200, 200, 200, 255);
}
Slider::~Slider()
{
}
} /* namespace ui */
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