class PaintWindow(wx.Window):
def __init__(self, parent, id):
wx.Window.__init__(self, parent, id)
self.SetBackgroundColour("White")
self.color = "Black"
self.thickness = 10
# 創建一個畫筆
self.pen = wx.Pen(self.color, self.thickness, wx.SOLID)
self.lines = []
self.curLine = []
self.pos = (0, 0)
self.InitBuffer()
# 連接事件
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)
def InitBuffer(self):
size = self.GetClientSize()
# 創建快取的設備背景關系
self.buffer = wx.Bitmap(size.width, size.height)
dc = wx.BufferedDC(None, self.buffer)
# 使用設備背景關系
dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
dc.Clear()
self.DrawLines(dc)
self.reInitBuffer = False
def GetLinesData(self):
return self.lines[:]
def SetLinesData(self, lines):
self.lines = lines[:]
self.InitBuffer()
self.Refresh()
def OnLeftDown(self, event):
self.curLine = []
self.pos = event.GetPositionTuple()
self.CaptureMouse()
def OnLeftUp(self, event):
if self.HasCapture():
self.lines.append((self.color,
self.thickness,
self.curLine))
self.curLine = []
self.ReleaseMouse()
def OnMotion(self, event):
if event.Dragging() and event.LeftIsDown():
dc = wx.BufferedDC(wx.ClientDC(self), self.buffer)
self.drawMotion(dc, event)
event.Skip()
def drawMotion(self, dc, event):
dc.SetPen(self.pen)
newPos = event.GetPositionTuple()
print(newPos)
coords = self.pos + newPos
self.curLine.append(coords)
dc.DrawLine(*coords)
self.pos = newPos
def OnSize(self, event):
self.reInitBuffer = True
def OnIdle(self, event):
if self.reInitBuffer:
self.InitBuffer()
self.Refresh(False)
def OnPaint(self, event):
dc = wx.BufferedPaintDC(self, self.buffer)
def DrawLines(self, dc):
for colour, thickness, line in self.lines:
pen = wx.Pen(colour, thickness, wx.SOLID)
dc.SetPen(pen)
for coords in line:
dc.DrawLine(*coords)
def SetColor(self, color):
self.color = color
self.pen = wx.Pen(self.color, self.thickness, wx.SOLID)
def SetThickness(self, num):
self.thickness = num
self.pen = wx.Pen(self.color, self.thickness, wx.SOLID)
想用wxpython實作繪圖功能，但是提示獲取不到滑鼠的位置陣列，但是GetPosition仍然是可以呼叫的，這種情況該怎么解決呢？
uj5u.com熱心網友回復：
wx.GetMousePosition() 這個嗎？uj5u.com熱心網友回復：
是想要獲得滑鼠移動程序中經過的點坐標的陣列，用的getPositionTuple()，但是報錯提示MouseEvent沒有這個屬性
uj5u.com熱心網友回復：
1. 兩個位置event.GetPositionTuple()更改event.GetPosition()2. 刪掉下面兩條
coords = self.pos + newPos
self.curLine.append(coords)
3.dc.DrawLine(*coords) 更換dc.DrawLine(self.pos,newPos)
uj5u.com熱心網友回復：
改成：wx.GetPosition()即可uj5u.com熱心網友回復：
改成：wx.GetPosition()即可67行：coords = self.pos + newPos 改成：coords = (self.pos, newPos)即可
uj5u.com熱心網友回復：
改成：event.GetPosition()即可67行：coords = self.pos + newPos 改成：coords = (self.pos, newPos)即可
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