degroote, I don't think you are being unreasonable to think your ex would want to see your DD on xmas day, but perhaps being unrealistic to expect your ex to have the same priorities as you with regard to your DD, given your post. You getting hurt on your DD's behalf is something I went through as well, but now realise that it's pointless, and just causes you stress and upset that can be avoided. Your ex's decisions on how much time he spends with your DD and when, are his decisions, and no matter what you think about them, the motivation behind them, and how that might then affect your DD, they are all his choices. You cannot force him to be the dad you think your DD deserves. You can only be the best mum you can be, and in doing so, any fall out that comes from the decisions and choices your ex makes, will be minimised because your DD has you to make sure she is the centre of your world, and your priority.
As hard as it is to separate yourself from the hurt his decisions cause you because you feel for your DD and how her dad's actions might affect her, you need to leave your ex to what he wants to do, and get on with being the mum your DD needs. Make sure your ex knows he can see and spend time with your DD when ever, but just leave him t get on with things, and you get on with your life. Possibly, the attention you give your ex, because of the things he is saying and doing, is giving him some satisfaction. Don't feed that situation. Offer him the time. Accept his response. Then ignore him until he comes to you for the time he asks for. That's how I now deal with my ex, and I'm a lot happier as a result. My DD is not at all affected by the very limited time her dad spends with her, as she gets a lot of love and nurture from me and my family. She sees her dad every 6/8 weeks, and loves him to bits. But she doesn't miss him, or look for him, and she isn't sad and rejected by his choices. She's got too full a life with me to worry about the life she doesn't have with her dad.
Leave him to his choices, and just enjoy your DD. Have confidence in your parenting as I'm sure you have more than enough love and care for her to make her dad's lack of effort have little impact on her growing up.