修改鼠标样式

function SortHearderCellType() {}
SortHearderCellType.prototype = new spreadNS.CellTypes.Text();

SortHearderCellType.prototype.paint = function (
  ctx,
  value,
  x,
  y,
  width,
  height,
  style,
  context
) {
  spreadNS.CellTypes.Text.prototype.paint.apply(this, arguments);
  if (this._mouseEnter) {
    style.backgroundImage = src;
    x = x + width / 2 + 70 / 2;
    y = y + (height - 16) / 2;
    width = 16;
    height = 16;
    value = "";
    spreadNS.CellTypes.Text.prototype.paint.apply(this, arguments);
  }
};

//鼠标移动
SortHearderCellType.prototype.processMouseEnter = function (hitInfo) {
  this._mouseEnter = true;
  var sheet = hitInfo.sheet;
  sheet.repaint(
    new GC.Spread.Sheets.Rect(
      hitInfo.cellRect.x,
      hitInfo.cellRect.y,
      hitInfo.cellRect.width,
      hitInfo.cellRect.height
    )
  );
}; //鼠标离开
SortHearderCellType.prototype.processMouseLeave = function (hitInfo) {
  this._mouseEnter = false;
  var sheet = hitInfo.sheet;
  sheet.repaint(
    new GC.Spread.Sheets.Rect(
      hitInfo.cellRect.x,
      hitInfo.cellRect.y,
      hitInfo.cellRect.width,
      hitInfo.cellRect.height
    )
  );
};