/* BSD 3-Clause License
 *
 * Copyright © 2008-2020, Jice and the libtcod contributors.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include "button.hpp"

#include <string.h>

#include <algorithm>

Button::Button(const char* label, const char* tip, widget_callback_t cbk, void* userData)
    : pressed(false), label(NULL) {
  if (label) {
    setLabel(label);
  }
  if (tip) {
    setTip(tip);
  }
  this->x = 0;
  this->y = 0;
  this->userData = userData;
  this->cbk = cbk;
}
Button::Button(
    int x, int y, int width, int height, const char* label, const char* tip, widget_callback_t cbk, void* userData)
    : pressed(false), label(NULL) {
  if (label) {
    setLabel(label);
  }
  if (tip) {
    setTip(tip);
  }
  w = width;
  h = height;
  this->x = x;
  this->y = y;
  this->userData = userData;
  this->cbk = cbk;
}
Button::~Button() {
  if (label) {
    free(label);
  }
}
void Button::setLabel(const char* newLabel) {
  if (label) {
    free(label);
  }
  label = TCOD_strdup(newLabel);
}
void Button::render() {
  con->setDefaultBackground(mouseIn ? backFocus : back);
  con->setDefaultForeground(mouseIn ? foreFocus : fore);
  if (w > 0 && h > 0) {
    con->rect(x, y, w, h, true, TCOD_BKGND_SET);
  }
  if (label) {
    if (pressed && mouseIn) {
      con->printf(x + w / 2, y, TCOD_BKGND_NONE, TCOD_CENTER, "-%s-", label);
    } else {
      con->printf(x + w / 2, y, TCOD_BKGND_NONE, TCOD_CENTER, "%s", label);
    }
  }
}
void Button::computeSize() {
  w = label ? static_cast<int>(strlen(label) + 2) : 4;
  h = 1;
}
void Button::expand(int width, int) { w = std::max(w, width); }
void Button::onButtonPress() { pressed = true; }
void Button::onButtonRelease() { pressed = false; }
void Button::onButtonClick() {
  if (cbk) {
    cbk(this, userData);
  }
}
