我正在尝试在python 2中使用GTK制作一个时钟。我此时的版本只是一个基本版本，它会复杂得多，但我需要先刷新它。最终，它将成为一个屏保，希望如此。
我试图理解queue_draw（）是如何工作的，但我无法弄明白。我是GTK的新手，没有使用过类的经验（尽管我正在尝试）。我想这两个都是我的问题所在。 有人可以帮我解决这个问题：D 我知道有关于这个问题的帖子，我仍然无法弄清楚如何使这个工作:( 谢谢
我正在使用Ubuntu 14.04，python 2。
这是我目前的代码：
#!/usr/bin/env python
import time
import gtk
import math
class Base:
def destroy(self, widget, data=None):
gtk.main_quit()
def close(self, widget):
self.window.destroy()
def rotate(self, center, point, angle):
#http://stackoverflow.com/questions/12161277/how-to-rotate-a-vertex-around-a-certain-point
px = point[0]
py = point[1]
rx = center[0] + (px - center[0]) * math.cos(math.radians(angle)) - (py - center[1]) * math.sin(math.radians(angle))
ry = center[1] + (px - center[0]) * math.sin(math.radians(angle)) + (py - center[1]) * math.cos(math.radians(angle))
return(rx, ry)
# This function will be called whenever the drawing area is exposed:
def expose_handler(self, widget, event) :
w, h = widget.window.get_size()
center = [int(w / 2), int(h / 2)]
xgc = widget.window.new_gc()
#%H for a 24 hour system as %I is for a 12 hour system
TIME = time.strftime("%Y-%m-%d %I:%M:%S") #add this to get GMT time# , time.gmtime())
H, M, S = TIME.split(" ")[1].split(":")
H, M, S = int(H), int(M), int(S)
Dial_radius = (h / 2 - ((h / 2) / 10)) / 3
H_size, M_size, S_size = (Dial_radius / 2), Dial_radius, Dial_radius
H_angle = H * (360 / 12) + (float(M) / 60) * (360 / 12)
M_angle = M * (360 / 60) + (float(S) / 60) * (360 / 60)
S_angle = S * (360 / 60)
H_zero = [center[0], center[1] - H_size]
M_zero = [center[0], center[1] - M_size]
S_zero = [center[0], center[1] - S_size]
Hx, Hy = self.rotate(center, H_zero, H_angle)
Mx, My = self.rotate(center, M_zero, M_angle)
Sx, Sy = self.rotate(center, S_zero, S_angle)
#Hour
xgc.set_rgb_fg_color(gtk.gdk.color_parse("red"))
widget.window.draw_line(xgc, center[0], center[1], int(Hx), int(Hy))
#Minute
xgc.set_rgb_fg_color(gtk.gdk.color_parse("green"))
widget.window.draw_line(xgc, center[0], center[1], int(Mx), int(My))
#Second
xgc.set_rgb_fg_color(gtk.gdk.color_parse("blue"))
widget.window.draw_line(xgc, center[0], center[1], int(Sx), int(Sy))
def __init__(self):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_position(gtk.WIN_POS_CENTER)
#self.window.fullscreen()
self.window.set_size_request(600, 400)
self.vbox = gtk.VBox()
self.window.add(self.vbox)
# Create an area to draw in:
self.drawing_area = gtk.DrawingArea()
self.vbox.pack_start(self.drawing_area)
self.drawing_area.show()
self.drawing_area.connect("expose-event", self.expose_handler)
self.drawing_area.show()
self.window.show_all()
self.window.connect("destroy", self.destroy)
def main(self):
gtk.main()
if __name__ == "__main__":
base = Base()
base.main()
我已经用acw1668的代码更新了代码，现在它正在工作，再次感谢，它看起来像这样：
#!/usr/bin/env python
import time
import gtk
import math
import glib
class Base:
def destroy(self, widget, data=None):
gtk.main_quit()
def close(self, widget):
self.window.destroy()
def refresh_clock(self):
self.drawing_area.queue_draw()
return True
def rotate(self, center, point, angle):
#http://stackoverflow.com/questions/12161277/how-to-rotate-a-vertex-around-a-certain-point
px = point[0]
py = point[1]
rx = center[0] + (px - center[0]) * math.cos(math.radians(angle)) - (py - center[1]) * math.sin(math.radians(angle))
ry = center[1] + (px - center[0]) * math.sin(math.radians(angle)) + (py - center[1]) * math.cos(math.radians(angle))
return(rx, ry)
# This function will be called whenever the drawing area is exposed:
def expose_handler(self, widget, event) :
w, h = widget.window.get_size()
center = [int(w / 2), int(h / 2)]
xgc = widget.window.new_gc()
#%H for a 24 hour system as %I is for a 12 hour system
TIME = time.strftime("%Y-%m-%d %I:%M:%S") #add this to get GMT time# , time.gmtime())
H, M, S = TIME.split(" ")[1].split(":")
H, M, S = int(H), int(M), int(S)
Dial_radius = (h / 2 - ((h / 2) / 10)) / 3
H_size, M_size, S_size = (Dial_radius / 2), Dial_radius, Dial_radius
H_angle = H * (360 / 12) + (float(M) / 60) * (360 / 12)
M_angle = M * (360 / 60) + (float(S) / 60) * (360 / 60)
S_angle = S * (360 / 60)
H_zero = [center[0], center[1] - H_size]
M_zero = [center[0], center[1] - M_size]
S_zero = [center[0], center[1] - S_size]
Hx, Hy = self.rotate(center, H_zero, H_angle)
Mx, My = self.rotate(center, M_zero, M_angle)
Sx, Sy = self.rotate(center, S_zero, S_angle)
#Hour
xgc.set_rgb_fg_color(gtk.gdk.color_parse("red"))
widget.window.draw_line(xgc, center[0], center[1], int(Hx), int(Hy))
#Minute
xgc.set_rgb_fg_color(gtk.gdk.color_parse("green"))
widget.window.draw_line(xgc, center[0], center[1], int(Mx), int(My))
#Second
xgc.set_rgb_fg_color(gtk.gdk.color_parse("blue"))
widget.window.draw_line(xgc, center[0], center[1], int(Sx), int(Sy))
def __init__(self):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_position(gtk.WIN_POS_CENTER)
#self.window.fullscreen()
self.window.set_size_request(600, 400)
self.vbox = gtk.VBox()
self.window.add(self.vbox)
# Create an area to draw in:
self.drawing_area = gtk.DrawingArea()
self.vbox.pack_start(self.drawing_area)
self.drawing_area.show()
self.drawing_area.connect("expose-event", self.expose_handler)
self.drawing_area.show()
self.window.show_all()
self.window.connect("destroy", self.destroy)
def main(self):
glib.timeout_add_seconds(1, self.refresh_clock)
gtk.main()
if __name__ == "__main__":
base = Base()
base.main()
答案 0 :(得分：5)
您可以使用glib.timeout_add_seconds(...)设置定时器，每秒拨打queue_draw()：
import glib
添加刷新时钟的功能：
def refresh_clock(self):
self.drawing_area.queue_draw()
return True
更新main()：
def main(self):
glib.timeout_add_seconds(1, self.refresh_clock)
gtk.main()