#include "libs.h"
#include "gui.h"

#define BUTTON_SIZE 16

namespace Gui {

Button::Button(void) {
  m_isPressed = false;
  m_eventMask = EVENT_MOUSEDOWN | EVENT_MOUSEUP | EVENT_MOUSEMOTION;
  SetSize(BUTTON_SIZE, BUTTON_SIZE);
}

bool Button::OnMouseDown(MouseButtonEvent* e) {
  if(e->button == 1) {
    m_isPressed = true;
    onPress.emit();
    /* Wait for mouse release, regardless of where on screen. */
    _m_release = RawEvents::onMouseUp.connect(sigc::mem_fun(this, &Button::OnRawMouseUp));
  }
  return false;
}

bool Button::OnMouseUp(MouseButtonEvent* e) {
  if((e->button == 1) && m_isPressed) {
    m_isPressed = false;
    onClick.emit();
  }
  return false;
}

void Button::OnActivate(void) {
  /* Activated by keyboard shortcut. */
  m_isPressed = true;
  onPress.emit();
  _m_kbrelease = RawEvents::onKeyUp.connect(sigc::mem_fun(this, &Button::OnRawKeyUp));
}

void Button::OnRawKeyUp(SDL_KeyboardEvent* e) {
  if(e->keysym.sym == m_shortcut.sym)  {
    m_isPressed = false;
    onRelease.emit();
    onClick.emit();
    _m_kbrelease.disconnect();
  }
}

void Button::OnRawMouseUp(SDL_MouseButtonEvent* e) {
  if(e->button == 1) {
    m_isPressed = false;
    _m_release.disconnect();
    onRelease.emit();
  }
}

void SolidButton::GetSizeRequested(float size[2]) {
  size[0] = size[1] = BUTTON_SIZE;
}

void TransparentButton::GetSizeRequested(float size[2]) {
  size[0] = size[1] = BUTTON_SIZE;
}

void SolidButton::Draw(void) {
  glBegin(GL_QUADS);
    glColor3f(.6, .6, .6);
    glVertex2f(0, 0);
    glVertex2f(15, 0);
    glVertex2f(15, 15);
    glVertex2f(0, 15);

    glColor3fv(Color::bgShadow);
    glVertex2f(2, 0);
    glVertex2f(15, 0);
    glVertex2f(15, 13);
    glVertex2f(2, 13);

    glColor3fv(Color::bg);
    glVertex2f(2, 2);
    glVertex2f(13, 2);
    glVertex2f(13, 13);
    glVertex2f(2, 13);
  glEnd();
}

void TransparentButton::Draw(void) {
  glColor3f(1, 1, 1);
  glBegin(GL_LINE_LOOP);
    glVertex2f(0, 0);
    glVertex2f(15, 0);
    glVertex2f(15, 15);
    glVertex2f(0, 15);
  glEnd();

  glBegin(GL_LINE_LOOP);
    glVertex2f(1, 1);
    glVertex2f(14, 1);
    glVertex2f(14, 14);
    glVertex2f(1, 14);
  glEnd();
}

}