The guide lines are not long enough when create a rectangle

[windwhim]

Provide environment information

python 3.8

What OS are you using?

Windows

Describe the Bug

The guide lines are not long enough when create a rectangle

Expected Behavior

No response

To Reproduce

No response

[windwhim]

This is due to the wrong length in Canvas.
I changed the code p.drawLine(0,int(self.prevMovePoint.y()),self.width()-1,int(self.prevMovePoint.y())) in the draw crosshair to p.drawLine(0,int(self.prevMovePoint.y()),int(self.pixmap.width()-1),int(self.prevMovePoint.y())), and similarly changed the p.drawLine(int(self.prevMovePoint.x()),0,int(self.prevMovePoint.x()),self.height()-1) to p.drawLine(int(self.prevMovePoint.x()),0,int(self.prevMovePoint.x()),int(self.pixmap.height()-1)). And the problem was solved.
Hope the bug can be solved sooner.