Python实例讲解 tkinter canvas (设置背景图片及文字)
-09-14
Python实例讲解 -- tkinter canvas (设置背景图片及文字)
博客分类:Python 2 / Wxpython
PythonwxPython
先来一个绘图:
Python代码
from Tkinter import *
master = Tk()
w = Canvas(master, width=200, height=100)
w.pack()
w.create_line(0, 0, 200, 100)
w.create_line(0, 100, 200, 0, fill="red", dash=(4, 4))
w.create_rectangle(50, 25, 150, 75, fill="blue")
mainloop()
tk 默认处理图片格式为gif 处理其他格式的图片,否则需要下载image的mod,见附件
Python代码
# -*- coding:utf-8 -*-
# file: TkinterCanvas.py
#
import Tkinter # 导入Tkinter模块
from PIL import Image, ImageTk
root = Tkinter.Tk()
canvas = Tkinter.Canvas(root,
width = 500, # 指定Canvas组件的宽度
height = 600, # 指定Canvas组件的高度
bg = "white") # 指定Canvas组件的背景色
#im = Tkinter.PhotoImage(file="img.gif") # 使用PhotoImage打开图片
image = Image.open("img.jpg")
im = ImageTk.PhotoImage(image)
canvas.create_image(300,50,image = im) # 使用create_image将图片添加到Canvas组件中
canvas.create_text(302,77, # 使用create_text方法在坐标(302,77)处绘制文字
text = "Use Canvas" # 所绘制文字的内容
,fill = "gray") # 所绘制文字的颜色为灰色
canvas.create_text(300,75,
text = "Use Canvas",
fill = "blue")
canvas.pack() # 将Canvas添加到主窗口
root.mainloop()
参看: /tkinterbook/canvas.htm#when-to-use
wxpython 的canvas
Java代码
# create a canvas on top of a blank bitmap
# any canvas drawings can now be saved to a standard image file
# tested with Python27 and wxPython28 by vegaseat 05jan
import wx
class MyFrame(wx.Frame):
def __init__(self, parent=None, id=-1, title=None):
wx.Frame.__init__(self, parent, id, title, size=(380,400))
self.statbmp = wx.StaticBitmap(self)
self.draw_image()
self.save_image()
def draw_image(self):
# select the width and height of the blank bitmap
# should fit the client frame
w, h = 340, 340
# create the blank bitmap as a draw background
draw_bmp = wx.EmptyBitmap(w, h)
# create the canvas on top of the draw_bmp
canvas_dc = wx.MemoryDC(draw_bmp)
# fill the canvas white
canvas_dc.SetBrush(wx.Brush("white"))
canvas_dc.Clear()
# draw a bunch of circles ...
# pen colour
canvas_dc.SetPen(wx.Pen("red", 1))
# fill colour
canvas_dc.SetBrush(wx.Brush("yellow"))
for x in range(10, 180, 10):
y = x
r = x
canvas_dc.DrawCircle(x, y, r)
# now put the canvas drawing into a bitmap to display it
# remember the canvas is on top of the draw_bmp
self.statbmp.SetBitmap(draw_bmp)
def save_image(self):
"""save the drawing"""
finished_image = self.statbmp.GetBitmap()
#finished_image.SaveFile("mydrawing.png", wx.BITMAP_TYPE_PNG)
finished_image.SaveFile("mydrawing.jpg", wx.BITMAP_TYPE_JPEG)
app = wx.App(0)
MyFrame(title="canvas draw and save").Show()
app.MainLoop()
# help(wx.PaintDC)
Tkinter编程代码实例.pdf (639 KB)
下载次数: 47
image_PIL-1.1.7.win32-py2.7.tar (820 KB)
下载次数: 19
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