我有一个带有空白文本框(通常由手工填写)的表单(以.png格式)。我想填充文本框。为此,我使用tkinter在屏幕上显示窗体,然后使用鼠标(使用箭头键进行更精细的定位)来获取框的像素坐标,然后使用PIL将文本写入到该窗体中框。下面是一个工作示例。调整tkinter画布和PIL图像上的像素坐标(Python)
我的主要问题是我努力对准tkinter画布中的像素坐标和PIL图像中的像素坐标。
一些额外的背景。图像高分辨率,大约4961×7016像素。我的屏幕分辨率是1920 x 1080.我在写文本时遇到了问题,我需要这样写,并且如果我缩放图像以使其完全适合我的屏幕,则会获得更大的成功。我只能假设这是因为我屏幕像素与图片像素混淆(当我将图像放入屏幕以对齐这两个图像时解决了这一问题 - 但了解这里的差异以及如何在不缩放的情况下执行此任务将成为最也有帮助)。
但我也有麻烦tkinter画布上的像素坐标与PIL图片调和。例如,下面的代码被设计为将(x,y)像素坐标和页面相对性(页面上的x%,页面上的y%)写入框中(其原因是因为它是另一个过程)。一个例子是:(346,481)>> {49.856,51.018}
但是如果(使用0.14的缩放因子)我点击图片底部的很低,我得到(209,986)>> {30.115,-0.407}。相对性应该介于0和100%之间,所以不应该是负数,我不能在PIL生成的.png文件中看到这个。
如果我使用0.125的比例因子,我可以将文本写入tkinter画布框中,但文本显示比保存到驱动器的PIL .png文件低很多(即在框外) 。所以这两个系统之间显然不起作用。
如何协调PIL和tkinter像素坐标?另外,我有四个独立的函数来处理更好的关键调整。理想的情况是这些将是一个函数,但我无法让箭头按钮(ETC)到如果elif的块中工作(例如,我尝试这样做,左,右等一些衍生品)
def mouseMovement(event):
moveSpeed = 1
try:
int(event.char)
moveSpeed = max(1, int(event.char)*5)
return True
except ValueError:
return False
x, y = pyautogui.position()
if event.char == '<Left>':
pyautogui.moveTo(x-moveSpeed, y)
elif event.char == '<Right>':
pyautogui.moveTo(x+moveSpeed, y)
root.bind('<Key>' , mouseMovement)
任何帮助不胜感激!
几乎工作下面的例子:
from tkinter import *
from PIL import Image, ImageDraw, ImageFont, ImageTk
import pyautogui
# Form
formName = '2013+ MCS4'
# PIL image'
formImage = Image.open(formName+'.png')
wForm, hForm = formImage.size
scale = 0.14
formImage = formImage.resize((int(scale*wForm), int(scale*hForm)), Image.ANTIALIAS)
draw = ImageDraw.Draw(formImage)
font = ImageFont.truetype('arial.ttf', 10)
textColor = (255, 40, 40)
# tkinter canvas
def colorConversion(RGB):
def hexadecimalScale(RGB):
hexadecimalSystem = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'A', 'B', 'C', 'D', 'E', 'F')
return str(hexadecimalSystem[RGB//16]) + str(hexadecimalSystem[RGB%16])
return '#' + hexadecimalScale(RGB[0]) + hexadecimalScale(RGB[1]) + hexadecimalScale(RGB[2])
fontCanvas = 'arial 7'
textColorCanvas = colorConversion(textColor)
# generate canvas
if __name__ == '__main__':
root = Tk()
# set up tkinter canvas with scrollbars
frame = Frame(root, bd=2, relief=SUNKEN)
frame.grid_rowconfigure(0, weight=1)
frame.grid_columnconfigure(0, weight=1)
xscroll = Scrollbar(frame, orient=HORIZONTAL)
xscroll.grid(row=1, column=0, sticky=E+W)
yscroll = Scrollbar(frame)
yscroll.grid(row=0, column=1, sticky=N+S)
canvas = Canvas(frame, width=int(scale*wForm), height=int(scale*hForm), bd=0, xscrollcommand=xscroll.set, yscrollcommand=yscroll.set)
canvas.grid(row=0, column=0, sticky=N+S+E+W)
xscroll.config(command=canvas.xview)
yscroll.config(command=canvas.yview)
frame.pack(fill=BOTH,expand=1)
# add image
#img = PhotoImage(file=formName+'.png')
img = ImageTk.PhotoImage(formImage)
canvas.create_image(0,0,image=img,anchor="nw")
canvas.config(scrollregion=canvas.bbox(ALL))
wForm = img.width()
hForm = img.height()
# finer mouse movements
moveSpeed = 1
def setMoveSpeed(event):
global moveSpeed
try:
int(event.char)
moveSpeed = max(1, int(event.char)*5)
return moveSpeed
except ValueError:
return False
def moveMouseLeft(event):
x, y = pyautogui.position()
pyautogui.moveTo(x-moveSpeed, y)
def moveMouseRight(event):
x, y = pyautogui.position()
pyautogui.moveTo(x+moveSpeed, y)
def moveMouseUp(event):
x, y = pyautogui.position()
pyautogui.moveTo(x, y-moveSpeed)
def moveMouseDown(event):
x, y = pyautogui.position()
pyautogui.moveTo(x, y+moveSpeed)
root.bind('<Key>' , setMoveSpeed)
root.bind('<Left>' , moveMouseLeft)
root.bind('<Right>', moveMouseRight)
root.bind('<Up>' , moveMouseUp)
root.bind('<Down>' , moveMouseDown)
# print coordinates
def printCoordinates(event):
x = event.x # minor adjustments to correct for differences in tkinter vs PIL methods (investigate further)
y = event.y # minor adjustments to correct for differences in tkinter vs PIL methods (investigate further)
canvas.create_text(x, y-5, fill= textColorCanvas, font= fontCanvas, anchor= 'sw',
text= '{'+str(round(x/wForm*100,3))+', '+str(round((1-y/hForm)*100,3))+'}')
draw.text((x, y-5), '{'+str(round(x/wForm*100,3))+', '+str(round((1-y/hForm)*100,3))+'}' , fill=textColor, font=font)
print('('+str(x)+', '+str(y)+') >> {'+str(round(x/wForm*100,3))+', '+str(round((1-y/hForm)*100,3))+'}')
root.bind('<Return>', printCoordinates)
root.mainloop()
formImage.save('coordinates - '+formName+'.png')