wxPython实现绘图小例子
本文实例为大家分享了wxPython绘图小例子的具体实现代码，供大家参考，具体内容如下
一个绘图的例子：
#!/usr/bin/envpython
#-*-coding:utf-8-*-
'''
Function:绘图
Input：NONE
Output:NONE
author:socrates
blog:http://www.cnblogs.com/dyx1024/
date:2012-07-11
'''
importwx
classPaintWindow(wx.Window):
def__init__(self,parent,id):
wx.Window.__init__(self,parent,id)
self.SetBackgroundColour("Red")
self.color="Green"
self.thickness=10
#创建一个画笔
self.pen=wx.Pen(self.color,self.thickness,wx.SOLID)
self.lines=[]
self.curLine=[]
self.pos=(0,0)
self.InitBuffer()
#连接事件
self.Bind(wx.EVT_LEFT_DOWN,self.OnLeftDown)
self.Bind(wx.EVT_LEFT_UP,self.OnLeftUp)
self.Bind(wx.EVT_MOTION,self.OnMotion)
self.Bind(wx.EVT_SIZE,self.OnSize)
self.Bind(wx.EVT_IDLE,self.OnIdle)
self.Bind(wx.EVT_PAINT,self.OnPaint)
defInitBuffer(self):
size=self.GetClientSize()
#创建缓存的设备上下文
self.buffer=wx.EmptyBitmap(size.width,size.height)
dc=wx.BufferedDC(None,self.buffer)
#使用设备上下文
dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
dc.Clear()
self.DrawLines(dc)
self.reInitBuffer=False
defGetLinesData(self):
returnself.lines[:]
defSetLinesData(self,lines):
self.lines=lines[:]
self.InitBuffer()
self.Refresh()
defOnLeftDown(self,event):
self.curLine=[]
#获取鼠标位置
self.pos=event.GetPositionTuple()
self.CaptureMouse()
defOnLeftUp(self,event):
ifself.HasCapture():
self.lines.append((self.color,
self.thickness,
self.curLine))
self.curLine=[]
self.ReleaseMouse()
defOnMotion(self,event):
ifevent.Dragging()andevent.LeftIsDown():
dc=wx.BufferedDC(wx.ClientDC(self),self.buffer)
self.drawMotion(dc,event)
event.Skip()
defdrawMotion(self,dc,event):
dc.SetPen(self.pen)
newPos=event.GetPositionTuple()
coords=self.pos+newPos
self.curLine.append(coords)
dc.DrawLine(*coords)
self.pos=newPos
defOnSize(self,event):
self.reInitBuffer=True
defOnIdle(self,event):
ifself.reInitBuffer:
self.InitBuffer()
self.Refresh(False)
defOnPaint(self,event):
dc=wx.BufferedPaintDC(self,self.buffer)
defDrawLines(self,dc):
forcolour,thickness,lineinself.lines:
pen=wx.Pen(colour,thickness,wx.SOLID)
dc.SetPen(pen)
forcoordsinline:
dc.DrawLine(*coords)
defSetColor(self,color):
self.color=color
self.pen=wx.Pen(self.color,self.thickness,wx.SOLID)
defSetThickness(self,num):
self.thickness=num
self.pen=wx.Pen(self.color,self.thickness,wx.SOLID)
classPaintFrame(wx.Frame):
def__init__(self,parent):
wx.Frame.__init__(self,parent,-1,"PanitFrame",size=(800,600))
self.paint=PaintWindow(self,-1)
if__name__=='__main__':
app=wx.PySimpleApp()
frame=PaintFrame(None)
frame.Show(True)
app.MainLoop()
测试：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。
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