python tkinter库画布鼠标拖动监听_python开发_tkinter_图形随鼠标移动

忘是亡心i 2022-10-31 13:48 242阅读 0赞

1 from tkinter import \*

= \{: ,: ,: ,: ,: \}Eay(Frame):createWidgets(self):self.draw = Canvas(self, width=500, height=500)self.mouse\_x = 450

self.mouse\_y = 250

self.oval\_zero\_x = 250

self.oval\_zero\_y = 250

self.oval\_r = 100

self.oval\_R = 30

self.oval\_r1 = self.oval\_r - self.oval\_R + 0.5

self.oval\_r2 = self.oval\_r - self.oval\_R - 0.5

self.letter\_ball\_x1 = 250

self.letter\_ball\_y1 = 250

self.ball = self.draw.create\_oval((self.oval\_zero\_x -self.oval\_r),42

(self.oval\_zero\_y -self.oval\_r),43

(self.oval\_zero\_x +self.oval\_r),44

(self.oval\_zero\_y +self.oval\_r),)46

self.ball = self.draw.create\_oval((self.oval\_zero\_x -self.oval\_r1),48

(self.oval\_zero\_y -self.oval\_r1),49

(self.oval\_zero\_x +self.oval\_r1),50

(self.oval\_zero\_y +self.oval\_r1),)52

self.ball = self.draw.create\_oval((self.oval\_zero\_x -self.oval\_r2),54

(self.oval\_zero\_y -self.oval\_r2),55

(self.oval\_zero\_x +self.oval\_r2),56

(self.oval\_zero\_y +self.oval\_r2),)self.ball\_over = self.draw.create\_oval((self.oval\_zero\_x -self.oval\_R),61

(self.oval\_zero\_y -self.oval\_R),62

(self.oval\_zero\_x +self.oval\_R),63

(self.oval\_zero\_y +self.oval\_R),)65

self.draw.pack(side=LEFT)mouseMove(self, event):69

self.mouse\_x =event.x70

self.mouse\_y =event.ySHOW\_LOG:\* 50).format(self.mouse\_x, self.mouse\_y)).format(self.letter\_ball\_x1, self.letter\_ball\_y1))ax\_x = abs(self.mouse\_x -self.oval\_zero\_x)78

ax\_y = abs(self.mouse\_y -self.oval\_zero\_y)79

ifSHOW\_LOG:).format(ax\_x, ax\_y))82

ax\_len = ((ax\_x \*\* 2) + (ax\_y \*\* 2))\*\*0.5

ifSHOW\_LOG:.format(ax\_len))ax\_len > abs(self.oval\_r -self.oval\_R):88

ac\_len = abs(self.oval\_r -self.oval\_R)89

ifSHOW\_LOG:.format(ac\_len))int(self.mouse\_x - self.oval\_zero\_x) !=0:93

if int(self.mouse\_y - self.oval\_zero\_y) !=0:k = (self.mouse\_y - self.oval\_zero\_y)/(self.mouse\_x -self.oval\_zero\_x)96

ifSHOW\_LOG:.format(k))98

b = self.mouse\_y - (k \*self.mouse\_x)letter\_ball\_x2 = ((ac\_len \* (abs(self.mouse\_x - self.oval\_zero\_x)))/ax\_len) +self.letter\_ball\_x1109

letter\_ball\_y2 = (letter\_ball\_x2 \* k) +b110

ifSHOW\_LOG:.format(self.letter\_ball\_x1, self.letter\_ball\_y1)).format(letter\_ball\_x2, letter\_ball\_y2))self.moved\_x2 = letter\_ball\_x2 -self.letter\_ball\_x1116

self.moved\_y2 = letter\_ball\_y2 -self.letter\_ball\_y1117

ifSHOW\_LOG:.format(int(self.moved\_x2), int(self.moved\_y2)))119 self.draw.move(self.ball\_over, int(self.moved\_x2), int(self.moved\_y2))120

self.letter\_ball\_x1 =letter\_ball\_x2121

self.letter\_ball\_y1 =letter\_ball\_y2122

else:)124

else:)126

else:127

ifSHOW\_LOG:)letter\_ball\_x2 =self.mouse\_x131

letter\_ball\_y2 =self.mouse\_y132

ifSHOW\_LOG:.format(letter\_ball\_x2, letter\_ball\_y2))self.moved\_x2 = letter\_ball\_x2 -self.letter\_ball\_x1137

self.moved\_y2 = letter\_ball\_y2 -self.letter\_ball\_y1138

ifSHOW\_LOG:.format(int(self.moved\_x2), int(self.moved\_y2)))140 self.draw.move(self.ball\_over, int(self.moved\_x2), int(self.moved\_y2))141