I spent a lot of time in France, Belgium, Germany, Austria about 4-5 years ago. I guess probably about 2-3 weeks each in Turkey, Italy & Greece. You'd stop at a rest stop in France during a rain storm and everyone would be inside the rest stop smoking. I would like to say irregardless of whether it was signed no smoking, but I can't really remember - there was a heck of a lot of smoking. Lots of smokers in spain along the streets 2 years ago - but I was on a tour, so anytime I was in a restaurant it was usually with the rest of the tour and not with the general population (part of the part that sucks about tours)
I went to a lot of people's homes in belgium,, and I remember one new year's dinner, probably of about 20 people - 2 sisters of the host started smoking at the dinner table without asking anyone. I went outside to get some air to breath, the host found me out there and asked what I was doing - I said breathing, so he used that as an excuse to ask the sisters to stop smoking (he didn't want them smoking in his house to begin with). The sisters became very outraged about it and went on and on about how rude I was and how smokers have rights and people treat them like they're lesser people and trample all of them, setting off a mini drama. Luckily it was in flemish, so I didn't catch it all, but someone was translating for me. But anyways - after that, one of the sisters went into the bathroom to smoke because she was unwilling to do it outside as asked and apparently wasn't able to go without smoking.
Scotland and London used to be terrible about smoking - I have a lot of relatives in Scotland, so I go over fairly often - but the last couple times were for funerals/illnesses so I can't say I went out to dinner much. However, my uncle happily puffed away on cigarettes wherever - till he died of lung cancer at 80 last winter. So I think the last pleasure trip was maybe 7 years ago where I remember smokers being quite a pain.
So, maybe in the last few years smoking has changed in general in europe.