Still looks blurry?
I made a v2... i hope this time works better...
I'd the same problem. Here are the tips to "fix" that:
Go to Right click -> Skins -> Active Skins -> Horizontal Line Calendar -> Options.
Month_year_font: font size of month and year text.
Small_font: font size for day numbers.
Large_font: font size for weekdays names.
Calendar_width: window width.
Calendar_height: window height.
Calendar_dayheight: "weekday/day" height.
Looking at the image, these are the steps:
1) Changes the font sizes until they have the size you want.
2) To change the spacing between days numbers change the window width.
3) Then, to change the spacing between weekdays and days change the Calendar_dayheight.
4) If month and year disappear, change the Calendar_height value.
I think that if you do this, you can set the font sizes to values that in your resolution are good, because you're changing the size, not the "zoom" scale.
NOTE: If the year is too far apart from month, change the x="1000r" to a less value.