button.cpp

#include <windows.h>
#include <GL/gl.h>

#include "button.h"

button::button()
{
  active = false;
  hoverActive = false;
  
  renderable = true;
  
  location.x = 275; 
  location.y = 75;
  size.x = 12;
  size.y = 12;
  
  bgColor.R = 0.5f;
  bgColor.G = 0.5f;
  bgColor.B = 0.5f;
  
  bgColor_active.R = 0.5f;
  bgColor_active.G = 0.5f;
  bgColor_active.B = 0.9f;
  
  bgColor_hoverActive.R = 0.5f;
  bgColor_hoverActive.G = 0.5f;
  bgColor_hoverActive.B = 0.7f;
  
  useLabelName = false;
  
  l_name.location.x = location.x;
  l_name.location.y = location.y;
  l_name.alignment = ALIGN_RIGHT;
  
  l_name.txtSize = (float)size.y;
  
}

button::~button()
{
}

int button::draw()
{
  if (!renderable) return -1;
  glBegin(GL_QUADS);
		//BackGround
		glColor3f( 
		active ? bgColor_active.R : hoverActive ? bgColor_hoverActive.R :  bgColor.R, 
		active ? bgColor_active.G : hoverActive ? bgColor_hoverActive.G :  bgColor.G, 
		active ? bgColor_active.B : hoverActive ? bgColor_hoverActive.B :  bgColor.B );
		
		glVertex2f((GLfloat)location.x,			(GLfloat)location.y);
		glVertex2f((GLfloat)location.x + size.x,(GLfloat)location.y);
		glVertex2f((GLfloat)location.x + size.x,(GLfloat)location.y + size.y);
		glVertex2f((GLfloat)location.x,			(GLfloat)location.y + size.y);
  glEnd();
  
  if (useLabelName) l_name.draw();
  return 0;
}

int button::forceUnActive()
{
  active = false;
  hoverActive = false;
  return 0;
}

int button::setOnClick(std::function<void()> p)
{
  onClick = p;
  return 0;
}

int button::eventHandler(UINT message,WPARAM key,int mousex,int mousey)
{
	(void) key;

	if (message == WM_LBUTTONDOWN)
	{
		active = true;
		hoverActive = false;
	}
	if (message == WM_MOUSEMOVE)
	{
		if (active) 
		{
		  // Move slider position to mouse x if can! calc value
		}
		else  // Hovering? How do we detect left hover?
		{
		  if (inBounds(mousex,mousey)) hoverActive = true;
		  else hoverActive = false; 
		}
	}
	if (message == WM_LBUTTONUP)   // Unset Active
	{
		active = false;
		if (inBounds(mousex,mousey)) 
		{
		  hoverActive = true;
		  // Run external code here?  
		  if (onClick) onClick();
		}
		
		
		
		//bgColor.B = 0.5f;
	}
	return 0;
}


void button::setColor(float red,float green, float blue, int style)
{

  switch (style)
  {
	case BUTTON_COLOR:
	  bgColor.R = red;
	  bgColor.G = green;
	  bgColor.B = blue;
	  return;
	  
	case BUTTON_COLOR_ACTIVE:
	  bgColor_active.R = red;
	  bgColor_active.G = green;
	  bgColor_active.B = blue;
	  return;
	  
	case BUTTON_COLOR_HOVERACTIVE:
	  bgColor_hoverActive.R = red;
	  bgColor_hoverActive.G = green;
	  bgColor_hoverActive.B = blue;
	  return;
  }
}