1 #!/usr/bin/python3
3 import sys
4 import pykms
5 import selectors
7 bar_width = 20
8 bar_speed = 8
10 class FlipHandler(pykms.PageFlipHandlerBase):
11 def __init__(self):
12 super().__init__()
13 self.bar_xpos = 0
14 self.front_buf = 0
15 self.fb1 = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
16 self.fb2 = pykms.DumbFramebuffer(card, mode.hdisplay, mode.vdisplay, "XR24");
18 def handle_page_flip(self, frame, time):
19 if self.front_buf == 0:
20 fb = self.fb2
21 else:
22 fb = self.fb1
24 self.front_buf = self.front_buf ^ 1
26 current_xpos = self.bar_xpos;
27 old_xpos = (current_xpos + (fb.width - bar_width - bar_speed)) % (fb.width - bar_width);
28 new_xpos = (current_xpos + bar_speed) % (fb.width - bar_width);
30 self.bar_xpos = new_xpos
32 pykms.draw_color_bar(fb, old_xpos, new_xpos, bar_width)
34 if card.has_atomic:
35 ctx = pykms.AtomicReq(card)
36 ctx.add(crtc.primary_plane, "FB_ID", fb.id)
37 ctx.commit(self)
38 else:
39 crtc.page_flip(fb, self)
42 card = pykms.Card()
43 conn = card.get_first_connected_connector()
44 mode = conn.get_default_mode()
45 crtc = conn.get_current_crtc()
47 fliphandler = FlipHandler()
49 crtc.set_mode(conn, fliphandler.fb1, mode)
51 fliphandler.handle_page_flip(0, 0)
53 def readdrm(conn, mask):
54 #print("EVENT");
55 card.call_page_flip_handlers()
57 def readkey(conn, mask):
58 #print("KEY EVENT");
59 sys.stdin.readline()
60 exit(0)
62 sel = selectors.DefaultSelector()
63 sel.register(card.fd, selectors.EVENT_READ, readdrm)
64 sel.register(sys.stdin, selectors.EVENT_READ, readkey)
66 while True:
67 events = sel.select()
68 for key, mask in events:
69 callback = key.data
70 callback(key.fileobj, mask)