How to change font size according to its size and PyQt5 label size?

Question

PyQt

How to resize text according to its size and PyQt5 label's size?

If the font size is too large, then it often goes beyond the label. In my project, the text changes to unknown to me, so I need to somehow automate the change in font size in accordance with its size and the size of the label.

Answer 1

Each time the function is called, a new variable is declared and a new interval is created. The interval stops, but not the one that was created during the previous call, but a new one.

var snake = { 
     interval : {
    right : function (start){
      if( start == "stop"){
        clearInterval(this.inter);
      } else {
        this.inter = setInterval(function(){}, 500)
      }
    }
  }
};

snake.interval.right();
snake.interval.right("stop");

In this case, the interval id will be in snake.interval.inter, and calling with "stop" will stop it.

Answer 2

Because when you handle the 'stop' parameter, you still start an infinite loop and naturally the script does not reach the check for start=='stop'.
You need to create a generic element and 2 functions for start and stop. For more details and even with examples on the stack, follow this link .

Answer 3

Are there any errors in the console?

Answer 4

var snake = { 
  interval : {
    interval_id: null,
    right : function (stop){
      if (stop) {
        return clearInterval(this.interval_id);
      }
      if (this.interval_id) {
        clearInterval(this.interval_id);
      }
      this.interval_id = setInterval(snake.functions.moveRight, 500);
    }
  }
}
snake.interval.right();
snake.interval.right(true);