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POHow draw on gtk window without generating expose event
 

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    <p>I am doing a project in PyGtk for monitoring a performance of system. I have developed almost of the code for purpose.But now i have a problem in it. My problem is that i am repainting all my stuff on expose-event and i want to draw on window without generating expose event.Reason for that is, i am plotting a graph on expose-event,but when i resize window it is not showing the perfect reading, i want to plot graph when window is idle and window is not resizing and when window gets resize it should not plot a graph.I tried for configure event but doesn't success to me. please help me. Please reply me soon. thank you</p> <p>here is my complete code:</p> <pre><code>import pygtk pygtk.require(`2.0`) import gtk import cairo import gobject import random, sys, thread, time from gtk import gdk class Monitor(gtk.DrawingArea): ##__gsignals__ = { ##"configure-event" : "override" ##} count = 0 coord = [] mem_coord = [] x1, y1 = 0, 0 str1 = [] max_mem = 0 mem_usage = 0 name = "" G = 2 def __init__(self,parent,name): super(Monitor,self).__init__() self.coord.append(0) self.connect("expose-event",self.do_on_expose) self.name = name gobject.timeout_add(1000,self.draw_loop) def get_mem_data(self): f = open("/proc/meminfo","r") str2 = f.readline().split(" ")[:] self.max_mem = int(str2[len(str2)-2]) for i in range(5): str2 = f.readline().split(" ")[:] str3 = int(str2[len(str2)-2]) f.close() return str3 def get_mem_usage(self): self.mem_usage = self.get_data() val = (self.mem_usage * 100) / self.max_mem return val def get_cpu_data(self): f = open("/proc/stat","r") str2 = f.readline().split(" ")[2:6] f.close() for i in range(len(str2)): str2[i] = int(str2[i]) return str2 def get_cpu_usage(self): str2 = self.get_data() for i in range(len(self.str1)): self.str1[i] = str2[i] - self.str1[i] val = 100 - (self.str1[len(self.str1) - 1] * 100.00 / sum(self.str1)) for i in range(len(self.str1)): self.str1[i] = str2[i] return val def draw_loop(self): self.queue_draw() return True def do_configure_event(self, event): self.cr=self.window.cairo_create() self.draw_grid(self.G) self.draw_graph() gtk.Window.do_configure_event(self, event) def do_on_expose(self,widget,event): self.cr=widget.window.cairo_create() self.draw_grid(self.G) self.draw_graph() def draw_graph(self): val = random.randint(1,100)##self.get_usage(self.resource) ##random.randint(1,100) print "val = ",val if self.count&lt;256 : self.count=self.count+1 self.coord.append(val) else: self.coord.pop(0) self.coord.append(val) val = (self.y1+self.y2-3) - ((val*(self.y2-6))/100) x=self.x1 + self.x2 - 3 self.cr.move_to(x,val) self.cr.set_source_rgb(255,0,0) for i in range(self.count,-1,-1): if x &gt; self.x1+3: val = (self.y1+self.y2-3) - ((self.coord[i]*(self.y2-6))/100) self.cr.line_to(x,val) self.cr.move_to(x,val) x=x-5 else: break self.cr.stroke() return False def draw_grid(self,G): size=self.window.get_size() height = (size[1] / G) - 30 self.x1, self.y1 = 20, 20 self.x2, self.y2 = size[0]-(2*self.x1), height x1, y1, x2, y2 = self.x1, self.y1, self.x2, self.y2 for i in range(G): self.cr.set_source_rgb(0,0,0) self.cr.rectangle(x1,y1,x2,y2) self.cr.fill() self.cr.stroke() self.cr.set_source_rgb(0,255,0) x3 = x2 - 6 y3 = y2 - 6 self.cr.rectangle(x1+3,y1+3,x3,y3) self.cr.stroke() x = x1 + 3 y = y1 + y2 - 3 fraction = int( round( x3 / 12.34 ) ) split = float(x3) / float(fraction) self.cr.set_source_rgba(0,255,0,0.3) for i in range(fraction): x = x + split self.cr.move_to(x,y1+3) self.cr.line_to(x,y) self.cr.stroke() x = x1 + x2 - 3 y = y1 + 3 fraction = int( round( y3 / 12.34 ) ) split = float(y3) / float(fraction) self.cr.set_source_rgba(0,255,0,0.3) for i in range(fraction): y = y + split self.cr.move_to(x1+3,y) self.cr.line_to(x,y) self.cr.stroke() y1 = y1 + y2 + 20 class main(gtk.Window): __gsignals__ = { "configure-event" : "override" } def __init__(self): super(main,self).__init__() self.set_title("Virtual Machine Monitor") self.set_default_size(640,640) self.set_resizable(True) self.set_geometry_hints(min_width=640,min_height=500) self.set_position(gtk.WIN_POS_CENTER) self.connect("delete_event",gtk.main_quit) ##self.maximize() vbox=gtk.VBox(False,1) self.monitor2=Monitor(self,"MEM") ##self.monitor3=Monitor(self,"MEM") vbox.pack_start(self.monitor2,1,1,0) ##vbox.pack_start(self.monitor3,1,1,0) self.add(vbox) self.show_all() def do_configure_event(self, event): title = "%s, %s" % (event.x, event.y) ##self.set_title(title) gtk.Window.do_configure_event(self, event) if __name__ == "__main__": main() gtk.main() </code></pre>
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