//=============================================================================
// MOG_MenuScrollbar.js
//=============================================================================

/*:
 * @target MZ
 * @plugindesc (v1.0) Adiciona uma barra de rolamento nas janelas.
 * @author Moghunter
 * @url https://mogplugins.wordpress.com
 *
 * @param Always Visible
 * @desc Deixar o medidor sempre visível.
 * @default true
 *
 * @param X-Axis
 * @desc Definição da posição X-Axis da barra.
 * @default 0
 *
 * @param Y-Axis
 * @desc Definição da posição Y-Axis da barra.
 * @default 0
 *
 * @param Button X-Axis
 * @desc Definição da posição X-Axis do botão.
 * @default 1
 *
 * @param Button Y-Axis
 * @desc Definição da posição Y-Axis da botão.
 * @default 1
 *
 * @help
 * =============================================================================
 * ♦♦♦ MOG - Menu Scroll Bar ♦♦♦
 * Author   -   Moghunter
 * Version  -   1.0
 * Updated  -   2020/10/18
 * https://mogplugins.wordpress.com
 * =============================================================================
 * Adiciona uma barra de rolamento nas janelas.
 *
 * =============================================================================
 * UTILIZAÇÃO
 * =============================================================================
 * Serão necessários as imagens. (/img/menus/)
 *
 * ScrollBarA.png
 * ScrollBarB.png
 *
 */

//=============================================================================
// ** PLUGIN PARAMETERS
//=============================================================================
var Imported = Imported || {};
Imported.MOG_MenuScrollbar = true;
var Moghunter = Moghunter || {};

Moghunter.parameters = PluginManager.parameters("MOG_MenuScrollbar");
Moghunter.scrollBarAlwaysVisible = String(
  Moghunter.parameters["Always Visible"] || "true"
);
Moghunter.scrollBarX = Number(Moghunter.parameters["X-Axis"] || 0);
Moghunter.scrollBarY = Number(Moghunter.parameters["Y-Axis"] || 0);
Moghunter.scrollBar_ButtonX = Number(
  Moghunter.parameters["Button X-Axis"] || 1
);
Moghunter.scrollBar_ButtonY = Number(
  Moghunter.parameters["Button Y-Axis"] || 0
);

//=============================================================================
// ■■■ ImageManager ■■■
//=============================================================================

//==============================
// * Menus
//==============================
ImageManager.loadMenus = function (filename) {
  return this.loadBitmap("img/menus/", filename);
};

//=============================================================================
// ** Window Selectable
//=============================================================================

//==============================
// * Initialize
//==============================
var _mog_scrollbar_winSel_initialize = Window_Selectable.prototype.initialize;
Window_Selectable.prototype.initialize = function (rect) {
  _mog_scrollbar_winSel_initialize.call(this, rect);
  this.createScrollBar();
};

//==============================
// * create Scroll Bar
//==============================
Window_Selectable.prototype.createScrollBar = function () {
  this._refScroll = true;
  this._scrollBar = new SpriteScrollBar(this);
  var id = this.scrollBarSetChild();
  this.addChildAt(this._scrollBar, id);
};

//==============================
// * scrollBarSetChild
//==============================
Window_Selectable.prototype.scrollBarSetChild = function () {
  var id = 3;
  if (id > this.children.length) {
    id = this.children.length;
  }
  return id;
};

//==============================
// * set Cursor Rect
//==============================
var _mog_scroll_setCursorRect = Window_Selectable.prototype.setCursorRect;
Window_Selectable.prototype.setCursorRect = function (x, y, width, height) {
  _mog_scroll_setCursorRect.call(this, x, y, width, height);
  this._refScroll = true;
};

//==============================
// * select
//==============================
var _mog_scrollbar_wsel_select = Window_Selectable.prototype.select;
Window_Selectable.prototype.select = function (index) {
  _mog_scrollbar_wsel_select.call(this, index);
  if (this._scrollBar) {
    this._scrollBar.update();
  }
};

//=============================================================================
// ** Sprite Scroll Bar
//=============================================================================
function SpriteScrollBar() {
  this.initialize.apply(this, arguments);
}

SpriteScrollBar.prototype = Object.create(Sprite.prototype);
SpriteScrollBar.prototype.constructor = SpriteScrollBar;

//==============================
// * Initialize
//==============================
SpriteScrollBar.prototype.initialize = function (win) {
  Sprite.prototype.initialize.call(this);
  this._window = win;
  this.visible = false;
  this._avisble =
    String(Moghunter.scrollBarAlwaysVisible) === "true" ? true : false;
  this.loadBitmaps();
  this.createSprites();
};

//==============================
// * Load Bitmaps
//==============================
SpriteScrollBar.prototype.loadBitmaps = function () {
  this._img1 = ImageManager.loadMenus("ScrollBarA");
  this._img2 = ImageManager.loadMenus("ScrollBarB");
};

//==============================
// * rc
//==============================
SpriteScrollBar.prototype.rc = function () {
  return this._window._cursorRect;
};

//==============================
// * create Sprites
//==============================
SpriteScrollBar.prototype.createSprites = function () {
  this.createBack();
  this.createButton();
};

//==============================
// * create Back
//==============================
SpriteScrollBar.prototype.createButton = function () {
  this._button = [];
  this._button._ny = 0;
  this._button._maxItens = -1;
  this._button._maxTopRow = -1;
  for (var i = 0; i < 3; i++) {
    this._button[i] = new Sprite(this._img2);
    this._button[i].visible = false;
    this.addChild(this._button[i]);
  }
};

//==============================
// * refresh button
//==============================
SpriteScrollBar.prototype.refreshButton = function () {
  var w = this._img2.width / 2;
  var h = this._img2.height;
  for (var i = 0; i < this._button.length; i++) {
    var p = [0, -999];
    var bx = Moghunter.scrollBar_ButtonX;
    var by = this.buttonPos();
    this._button[i].setFrame(0, 0, w, h);
    this._button[i].visible = true;
    if (i === 0) {
      p = [bx, by - this._img2.height];
    }
    if (i === 1) {
      p = [bx, by];
      this._button[i].setFrame(w, 0, w, h);
    }
    if (i === 2) {
      p = [bx, by + this.buttonSize() + this._img2.height];
    }
    this._button[i].x = p[0];
    if (this._button._maxItens != this._window.maxItems()) {
      this._button[i].y = p[1];
    }
  }
  this.setScaleButton();
  this._button._maxItens = this._window.maxItems();
};

//==============================
// * update Button
//==============================
SpriteScrollBar.prototype.updateButton = function () {
  for (var i = 0; i < this._button.length; i++) {
    var by = this.buttonPos();
    if (i === 0) {
      ny = by - this._img2.height;
    }
    if (i === 1) {
      ny = by;
    }
    if (i === 2) {
      ny = by + this.buttonSize() + this._img2.height;
    }
    this._button[i].y = this.moveto(this._button[i].y, ny);
  }
};

//==============================
// * button Size
//==============================
SpriteScrollBar.prototype.buttonSize = function () {
  var size = this.heightF() - this.padding() * this._window.maxTopRow();
  return Math.min(Math.max(size, this.padding()), this.heightF());
};

//==============================
// * moveto
//==============================
SpriteScrollBar.prototype.moveto = function (value, real_value) {
  if (value == real_value) {
    return value;
  }
  var dnspeed = 3 + Math.abs(value - real_value) / 10;
  if (value > real_value) {
    value -= dnspeed;
    if (value < real_value) {
      value = real_value;
    }
  } else if (value < real_value) {
    value += dnspeed;
    if (value > real_value) {
      value = real_value;
    }
  }
  return Math.floor(value);
};

//==============================
// * scroll Bar Y
//==============================
SpriteScrollBar.prototype.scrollBarY = function () {
  return Moghunter.scrollBar_ButtonY;
};

//==============================
// * button Pos
//==============================
SpriteScrollBar.prototype.buttonPos = function () {
  var space_max = this.heightF() - this.buttonSize();
  var space = space_max / this._window.maxTopRow();
  var s = Math.min(Math.max(space, 0.001), space_max);
  var y =
    this.scrollBarY() +
    s * Math.floor(this._window.topIndex() / this._window.maxCols());
  return Math.min(Math.max(y, 0), space_max);
};

//==============================
// * set Scale Button
//==============================
SpriteScrollBar.prototype.setScaleButton = function () {
  this._button[1].scale.y = this.buttonSize() / this._img2.height;
  this._button[2].scale.y = -1.0;
};

//==============================
// * create Back
//==============================
SpriteScrollBar.prototype.createBack = function () {
  this._back = [];
  for (var i = 0; i < 3; i++) {
    this._back[i] = new Sprite(this._img1);
    this._back[i].visible = false;
    this.addChild(this._back[i]);
  }
};

//==============================
// * refresh Back
//==============================
SpriteScrollBar.prototype.refreshBack = function () {
  var w = this._img1.width / 2;
  var h = this._img1.height;
  for (var i = 0; i < this._back.length; i++) {
    var p = [0, 0];
    this._back[i].setFrame(0, 0, w, h);
    if (i === 0) {
      p = [0, -this._img1.height];
    }
    if (i === 1) {
      p = [0, 0];
      this._back[i].setFrame(w, 0, w, h);
    }
    if (i === 2) {
      p = [0, this.heightF() + this._img1.height];
    }
    this._back[i].x = p[0];
    this._back[i].y = p[1];
    this._back[i].visible = true;
  }
  this.setScaleBack();
};

//==============================
// * Set Scale Back
//==============================
SpriteScrollBar.prototype.setScaleBack = function () {
  this._back[1].scale.y = this.heightF() / this._img1.height;
  this._back[2].scale.y = -1.0;
};

//==============================
// * Padding
//==============================
SpriteScrollBar.prototype.padding = function () {
  return this._window.padding;
};

//==============================
// * Pos X
//==============================
SpriteScrollBar.prototype.posX = function () {
  return this._window.width - this.padding() + Moghunter.scrollBarX;
};

//==============================
// * Pos Y
//==============================
SpriteScrollBar.prototype.posY = function () {
  return this.padding() + Moghunter.scrollBarY;
};

//==============================
// * Height F
//==============================
SpriteScrollBar.prototype.heightF = function () {
  return this._window.height - this.padding() * 2;
};

//==============================
// * refresh Sprites
//==============================
SpriteScrollBar.prototype.refreshSprites = function () {
  this._window._refScroll = false;
  this._button._maxTopRow = this._window.maxTopRow();
  this.refreshBack();
  this.refreshButton();
};

//==============================
// * needRefresh
//==============================
SpriteScrollBar.prototype.needRefresh = function () {
  if (this._window._refScroll) {
    return true;
  }
  if (this._button._maxTopRow != this._window.maxTopRow()) {
    return true;
  }
  return false;
};

//==============================
// * update Position
//==============================
SpriteScrollBar.prototype.updatePosition = function () {
  if (this.needRefresh()) {
    this.refreshSprites();
  }
  this.updateButton();
  this.visible = this.isVisible();
  this.x = this.posX();
  this.y = this.posY();
  this.opacity = this._window.contentsOpacity;
  if (!this.visible) {
    this._button._maxItens = -2;
  }
};

//==============================
// * Is Visible
//==============================
SpriteScrollBar.prototype.isVisible = function () {
  if (this._window._opening) {
    return false;
  }
  if (this._window._closing) {
    return false;
  }
  if (this._window.openness <= 0) {
    return false;
  }
  if (!this._window.visible) {
    return false;
  }
  if (this._window.maxTopRow() === 0) {
    return false;
  }
  if (!this._avisble && !this._window.active) {
    return false;
  }
  return true;
};

//==============================
// * Update
//==============================
SpriteScrollBar.prototype.update = function () {
  Sprite.prototype.update.call(this);
  if (!this._img1) {
    return;
  }
  if (!this._img1.isReady()) {
    return;
  }
  if (!this.rc()) {
    this.visible = false;
    return;
  }
  this.updatePosition();
};