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ninoborges |
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#!/usr/bin/env python
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"""M CLOCK 2.0."""
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from __future__ import division
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import sys
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import time
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import math
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import Tkinter
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class MClock:
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def __init__(self, radius=200, segments=9):
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self.segments = segments
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self.root = Tkinter.Tk()
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self.root.wm_title("M Clock 2.0")
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self.canvas = Tkinter.Canvas(self.root,
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width=2*radius, height=2*radius,
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bg="black", highlightthickness=0)
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self.canvas.pack(expand=True, fill="both")
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self.canvas.bind("<Configure>", self.on_configure)
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self.canvas.bind("<ButtonPress-1>", self.on_press)
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self.canvas.bind("<B1-Motion>", self.on_motion)
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self.canvas.bind("<ButtonRelease-1>", self.on_release)
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if sys.platform == "win32":
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self.canvas.bind("<3>", self.on_zoom)
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self.credits += "\n(right button toggles full screen mode)"
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self.recalc(radius*2, radius*2)
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def on_configure(self, event):
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self.recalc(event.width, event.height)
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credits = ("M Clock 2.0\n"
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"by Guido van Rossum\n"
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"after a design by Rob Juda")
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creditid = None
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showtext = False
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def on_press(self, event):
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self.creditid = self.canvas.create_text(
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self.canvas.canvasx(event.x),
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self.canvas.canvasy(event.y),
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anchor="s", text=self.credits,
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font="Helvetica 16 bold", justify="center")
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self.showtext = not self.showtext
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def on_motion(self, event):
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creditid = self.creditid
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if creditid:
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oldx, oldy = self.canvas.coords(creditid)
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self.canvas.move(creditid,
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self.canvas.canvasx(event.x) - oldx,
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self.canvas.canvasy(event.y) - oldy)
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def on_release(self, event):
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creditid = self.creditid
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if creditid:
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self.creditid = None
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self.canvas.delete(creditid)
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def on_zoom(self, event):
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if self.root.wm_overrideredirect():
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self.root.wm_overrideredirect(False)
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self.root.wm_state("normal")
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self.root.wm_geometry("400x400")
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else:
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self.root.wm_overrideredirect(True)
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self.root.wm_state("zoomed")
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def recalc(self, width, height):
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radius = min(width, height) // 2
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self.width = width
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self.height = height
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self.radius = radius
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self.bigsize = radius * .975
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self.litsize = radius * .67
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self.canvas.configure(scrollregion=(-width//2, -height//2,
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width//2, height//2))
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def demo(self, speed=1, colors=(0, 1, 2), segments=None):
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if segments is not None:
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self.segments = segments
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if self.creditid:
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text = "N=%s\nv=%s\n%s" % (self.segments, speed, list(colors))
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self.canvas.itemconfigure(self.creditid, text=text)
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hh, mm, ss = time.localtime()[3:6]
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self.showtext = False
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while not self.showtext:
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try:
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self.draw(hh, mm, ss, colors)
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except Tkinter.TclError:
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break
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self.root.update()
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ss += speed
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mm, ss = divmod(mm*60 + ss, 60)
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hh, mm = divmod(hh*60 + mm, 60)
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hh %= 24
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def run(self):
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self.redraw()
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self.root.mainloop()
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def redraw(self):
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t = time.time()
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hh, mm, ss = time.localtime(t)[3:6]
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self.draw(hh, mm, ss)
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self.root.after(int(1000 * (1 - t%1.0)), self.redraw)
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ids = ()
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def draw(self, hh, mm, ss, colors=(0, 1, 2)):
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radius = self.radius
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bigsize = self.bigsize
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litsize = self.litsize
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# Delete old items
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if self.ids:
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self.canvas.delete(*self.ids)
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self.ids = []
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# Set bigd, litd to angles in degrees for big, little hands
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# 12 => 90, 3 => 0, etc.
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bigd = (90 - (mm*60 + ss) / 10) % 360
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litd = (90 - (hh*3600 + mm*60 + ss) / 120) % 360
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# Set bigr, litr to the same values in radians
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bigr = bigd * math.pi / 180
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litr = litd * math.pi / 180
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# Draw the background colored arcs
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self.drawbg(bigd, litd, colors)
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# Draw the hands
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b = self.canvas.create_line(0, 0,
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bigsize*math.cos(bigr),
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-bigsize*math.sin(bigr),
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width=radius/50, capstyle="round")
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l = self.canvas.create_line(0, 0,
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litsize*math.cos(litr),
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-litsize*math.sin(litr),
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width=radius/33, capstyle="round")
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self.ids.append(b)
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self.ids.append(l)
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# Draw the text
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if self.showtext:
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t = self.canvas.create_text(-bigsize, bigsize,
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text="%02d:%02d:%02d" % (hh, mm, ss),
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fill="white", anchor="sw",
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font="helvetica 16 bold")
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self.ids.append(t)
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if self.creditid:
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self.canvas.tag_raise(self.creditid)
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def drawbg(self, bigd, litd, colors=(0, 1, 2)):
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# This is tricky. We have to simulate a white background with
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# three transparent discs in front of it; one disc is
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# stationary and the other two are attached to the big and
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# little hands, respectively. Each disc has 9 pie segments in
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# sucessive shades of pigment applied to it, ranging from
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# fully transparent to only allowing one of the three colors
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# Cyan, Magenta, Yellow through.
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N = self.segments
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table = []
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for angle, colorindex in [(bigd - 180/N, 0),
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(litd - 180/N, 1),
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( 90 - 180/N, 2)]:
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angle %= 360
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for i in range(N):
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color = 255
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if colorindex in colors:
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color = (N-1-i)*color//(N-1)
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table.append((angle, color, colorindex))
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angle += 360/N
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if angle >= 360:
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angle -= 360
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table.append((0, color, colorindex))
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table.sort()
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table.append((360, None))
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radius = self.radius
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fill = [0, 0, 0]
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for i, (angle, color, colorindex) in enumerate(table[:-1]):
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fill[colorindex] = color
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if table[i+1][0] > angle:
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extent = table[i+1][0] - angle
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if extent < 1.:
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# XXX Work around a bug in Tk for very small angles
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extent = 1.
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id = self.canvas.create_arc(-radius, -radius, radius, radius,
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fill="#%02x%02x%02x" % tuple(fill),
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outline="",
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start=angle,
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extent=extent)
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self.ids.append(id)
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def main():
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MClock().run()
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def demo():
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mc = MClock()
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save_credits = mc.credits
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mc.credits = ""
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mc.demo(0, ())
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mc.demo(1, ())
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mc.demo(10, ())
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mc.demo(100, ())
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mc.demo(1000, ())
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mc.demo(0, (2,))
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mc.demo(10, (2,))
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mc.demo(0, (1,))
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mc.demo(10, (1,))
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mc.demo(0, (0,))
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mc.demo(10, (0,))
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mc.demo(0, (0, 1, 2,))
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(100, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 2)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 3)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 4)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 5)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 6)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 32)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 128)
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mc.demo(1, (0, 1, 2,))
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mc.demo(10, (0, 1, 2,))
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mc.demo(0, (0, 1, 2,), 9) # Reset
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mc.credits = save_credits
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mc.run()
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if __name__ == "__main__":
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if "-d" in sys.argv[1:] or "demo" in sys.argv[0]:
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demo()
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else:
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main()
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