piskel/zoom/js/drawingtools/selectiontools/RectangleSelect.js

/**
 * @provide pskl.drawingtools.RectangleSelect
 *
 * @require pskl.utils
 */
(function() {
  var ns = $.namespace("pskl.drawingtools");

  ns.RectangleSelect = function() {
    this.toolId = "tool-rectangle-select";
    this.helpText = "Rectangle selection tool";
    
    ns.BaseSelect.call(this);
  };

  pskl.utils.inherit(ns.RectangleSelect, ns.BaseSelect);
  

  /**
   * @override
   */
  ns.RectangleSelect.prototype.onSelectStart_ = function (col, row, color, frame, overlay) {
    // Drawing the first point of the rectangle in the fake overlay canvas:
    overlay.setPixel(col, row, color);
  };

  /**
   * When creating the rectangle selection, we clear the current overlayFrame and
   * redraw the current rectangle based on the orgin coordinate and
   * the current mouse coordiinate in sprite.
   * @override
   */
  ns.RectangleSelect.prototype.onSelect_ = function (col, row, color, frame, overlay) {
    overlay.clear();
    if(this.startCol == col &&this.startRow == row) {
      $.publish(Events.SELECTION_DISMISSED);
    } else {
      var selection = new pskl.selection.RectangularSelection(
        this.startCol, this.startRow, col, row);
      $.publish(Events.SELECTION_CREATED, [selection]);
      this.drawSelectionOnOverlay_(selection, overlay);
    }
  };

  /**
   * @override
   */
  ns.RectangleSelect.prototype.onSelectEnd_ = function (col, row, color, frame, overlay) {
    this.onSelect_(col, row, color, frame, overlay);
  };

})();