-from wxPython.wx import *
+import random
+import time
+import thread
-import thread
-import time
-from whrandom import random
+import wx
+import wx.lib.newevent
#----------------------------------------------------------------------
-wxEVT_UPDATE_BARGRAPH = 25015
-
-def EVT_UPDATE_BARGRAPH(win, func):
- win.Connect(-1, -1, wxEVT_UPDATE_BARGRAPH, func)
-
-
-class UpdateBarEvent(wxPyEvent):
- def __init__(self, barNum, value):
- wxPyEvent.__init__(self)
- self.SetEventType(wxEVT_UPDATE_BARGRAPH)
- self.barNum = barNum
- self.value = value
+# This creates a new Event class and a EVT binder function
+(UpdateBarEvent, EVT_UPDATE_BARGRAPH) = wx.lib.newevent.NewEvent()
#----------------------------------------------------------------------
self.val = val
def Start(self):
- self.keepGoing = self.running = true
+ self.keepGoing = self.running = True
thread.start_new_thread(self.Run, ())
def Stop(self):
- self.keepGoing = false
+ self.keepGoing = False
def IsRunning(self):
return self.running
def Run(self):
while self.keepGoing:
- evt = UpdateBarEvent(self.barNum, int(self.val))
- wxPostEvent(self.win, evt)
- del evt
-
- sleeptime = (random() * 2) + 0.5
- #print self.barNum, 'sleeping for', sleeptime
- time.sleep(sleeptime)
+ evt = UpdateBarEvent(barNum = self.barNum, value = int(self.val))
+ wx.PostEvent(self.win, evt)
+
+ sleeptime = (random.random() * 2) + 0.5
+ time.sleep(sleeptime/4)
sleeptime = sleeptime * 5
- if int(random() * 2):
+ if int(random.random() * 2):
self.val = self.val + sleeptime
else:
self.val = self.val - sleeptime
if self.val < 0: self.val = 0
if self.val > 300: self.val = 300
- self.running = false
+ self.running = False
#----------------------------------------------------------------------
-class GraphWindow(wxWindow):
+class GraphWindow(wx.Window):
def __init__(self, parent, labels):
- wxWindow.__init__(self, parent, -1)
+ wx.Window.__init__(self, parent, -1)
self.values = []
for label in labels:
self.values.append((label, 0))
- self.font = wxFont(12, wxSWISS, wxNORMAL, wxBOLD)
- self.SetFont(self.font)
+ font = wx.Font(12, wx.SWISS, wx.NORMAL, wx.BOLD)
+ self.SetFont(font)
- self.colors = [ wxRED, wxGREEN, wxBLUE, wxCYAN,
- wxNamedColour("Yellow"), wxNamedColor("Navy") ]
+ self.colors = [ wx.RED, wx.GREEN, wx.BLUE, wx.CYAN,
+ "Yellow", "Navy" ]
- EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
- EVT_PAINT(self, self.OnPaint)
+ self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
+ self.Bind(wx.EVT_PAINT, self.OnPaint)
def SetValue(self, index, value):
def SetFont(self, font):
- wxWindow.SetFont(self, font)
+ wx.Window.SetFont(self, font)
wmax = hmax = 0
for label, val in self.values:
w,h = self.GetTextExtent(label)
self.barHeight = hmax
+ def GetBestHeight(self):
+ return 2 * (self.barHeight + 1) * len(self.values)
+
+
def Draw(self, dc, size):
- dc.SetFont(self.font)
- dc.SetTextForeground(wxBLUE)
- dc.SetBackground(wxBrush(self.GetBackgroundColour()))
+ dc.SetFont(self.GetFont())
+ dc.SetTextForeground(wx.BLUE)
+ dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
dc.Clear()
- dc.SetPen(wxPen(wxBLACK, 3, wxSOLID))
+ dc.SetPen(wx.Pen(wx.BLACK, 3, wx.SOLID))
dc.DrawLine(self.linePos, 0, self.linePos, size.height-10)
bh = ypos = self.barHeight
if val:
color = self.colors[ x % len(self.colors) ]
- dc.SetPen(wxPen(color))
- dc.SetBrush(wxBrush(color))
+ dc.SetPen(wx.Pen(color))
+ dc.SetBrush(wx.Brush(color))
dc.DrawRectangle(self.linePos+3, ypos, val, bh)
ypos = ypos + 2*bh
- if ypos > size.height-10:
+ if ypos > size[1]-10:
break
def OnPaint(self, evt):
- size = self.GetSize()
- bmp = wxEmptyBitmap(size.width, size.height)
- dc = wxMemoryDC()
+ width, height = size =self.GetSize()
+ bmp = wx.EmptyBitmap(width, height)
+
+ dc = wx.MemoryDC()
dc.SelectObject(bmp)
+
+
self.Draw(dc, size)
- wdc = wxPaintDC(self)
+ wdc = wx.PaintDC(self)
wdc.BeginDrawing()
- wdc.Blit(0,0, size.width, size.height, dc, 0,0)
+ wdc.Blit(0,0, size[0], size[1], dc, 0,0)
wdc.EndDrawing()
- dc.SelectObject(wxNullBitmap)
+ dc.SelectObject(wx.NullBitmap)
def OnEraseBackground(self, evt):
#----------------------------------------------------------------------
-class TestFrame(wxFrame):
+class TestFrame(wx.Frame):
def __init__(self, parent, log):
- wxFrame.__init__(self, parent, -1, "Thread Test", size=(450,300))
+ wx.Frame.__init__(self, parent, -1, "Thread Test", size=(450,300))
self.log = log
#self.CenterOnParent()
- panel = wxPanel(self, -1)
- panel.SetFont(wxFont(10, wxSWISS, wxNORMAL, wxBOLD))
- wxStaticText(panel, -1,
+ panel = wx.Panel(self, -1)
+ panel.SetFont(wx.Font(10, wx.SWISS, wx.NORMAL, wx.BOLD))
+ wx.StaticText(panel, -1,
"This demo shows multiple threads interacting with this\n"
- "window by sending events to it.", wxPoint(5,5))
+ "window by sending events to it, one thread for each bar.",
+ (5,5))
panel.Fit()
self.graph = GraphWindow(self, ['Zero', 'One', 'Two', 'Three', 'Four',
'Five', 'Six', 'Seven'])
+ self.graph.SetSize((450, self.graph.GetBestHeight()))
- sizer = wxBoxSizer(wxVERTICAL)
- sizer.Add(panel, 0, wxEXPAND)
- sizer.Add(self.graph, 1, wxEXPAND)
+ sizer = wx.BoxSizer(wx.VERTICAL)
+ sizer.Add(panel, 0, wx.EXPAND)
+ sizer.Add(self.graph, 1, wx.EXPAND)
self.SetSizer(sizer)
- self.SetAutoLayout(true)
+ self.SetAutoLayout(True)
+ sizer.Fit(self)
- #self.graph.SetValue(0, 25)
- #self.graph.SetValue(1, 50)
- #self.graph.SetValue(2, 75)
- #self.graph.SetValue(3, 100)
+ self.Bind(EVT_UPDATE_BARGRAPH, self.OnUpdate)
- EVT_UPDATE_BARGRAPH(self, self.OnUpdate)
self.threads = []
self.threads.append(CalcBarThread(self, 0, 50))
self.threads.append(CalcBarThread(self, 1, 75))
for t in self.threads:
t.Start()
- EVT_CLOSE(self, self.OnCloseWindow)
+ self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
def OnUpdate(self, evt):
self.graph.SetValue(evt.barNum, evt.value)
- self.graph.Refresh(false)
+ self.graph.Refresh(False)
def OnCloseWindow(self, evt):
- busy = wxBusyInfo("One moment please, waiting for threads to die...")
+ busy = wx.BusyInfo("One moment please, waiting for threads to die...")
+ wx.Yield()
+
for t in self.threads:
t.Stop()
+
running = 1
+
while running:
running = 0
+
for t in self.threads:
running = running + t.IsRunning()
+
time.sleep(0.1)
+
self.Destroy()
-#----------------------------------------------------------------------
+#---------------------------------------------------------------------------
+
+class TestPanel(wx.Panel):
+ def __init__(self, parent, log):
+ self.log = log
+ wx.Panel.__init__(self, parent, -1)
+
+ b = wx.Button(self, -1, "Show Threads sample", (50,50))
+ self.Bind(wx.EVT_BUTTON, self.OnButton, b)
+
+
+ def OnButton(self, evt):
+ win = TestFrame(self, self.log)
+ win.Show(True)
+
+
+#---------------------------------------------------------------------------
+
def runTest(frame, nb, log):
- win = TestFrame(frame, log)
- frame.otherWin = win
- win.Show(true)
- return None
+ win = TestPanel(nb, log)
+ return win
#----------------------------------------------------------------------
+
overview = """\
The main issue with multi-threaded GUI programming is the thread safty
of the GUI itself. On most platforms the GUI is not thread safe and
need to take that into account.
The solution is to only allow interaction with the GUI from a single
-thread, but this often severly limits what can be done in an
+thread, but this often severely limits what can be done in an
application and makes it difficult to use additional threads at all.
Since wxPython already makes extensive use of event handlers, it is a
logical extension to allow events to be sent to GUI objects from
-alternate threads. A function called wxPostEvent allows you to do
+alternate threads. A function called wx.PostEvent allows you to do
this. It accepts an event and an event handler (window) and instead
of sending the event immediately in the current context like
ProcessEvent does, it processes it later from the context of the GUI
thread.
"""
+
+
+
+if __name__ == '__main__':
+ import sys,os
+ import run
+ run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
+
projects / wxWidgets.git / blobdiff