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