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| 1 # Copyright (c) 2001-2004 Twisted Matrix Laboratories. | |
| 2 # See LICENSE for details. | |
| 3 | |
| 4 # | |
| 5 """Logictech MouseMan serial protocol. | |
| 6 | |
| 7 http://www.softnco.demon.co.uk/SerialMouse.txt | |
| 8 """ | |
| 9 | |
| 10 from twisted.internet import protocol | |
| 11 | |
| 12 class MouseMan(protocol.Protocol): | |
| 13 """ | |
| 14 | |
| 15 Parser for Logitech MouseMan serial mouse protocol (compatible | |
| 16 with Microsoft Serial Mouse). | |
| 17 | |
| 18 """ | |
| 19 | |
| 20 state = 'initial' | |
| 21 | |
| 22 leftbutton=None | |
| 23 rightbutton=None | |
| 24 middlebutton=None | |
| 25 | |
| 26 leftold=None | |
| 27 rightold=None | |
| 28 middleold=None | |
| 29 | |
| 30 horiz=None | |
| 31 vert=None | |
| 32 horizold=None | |
| 33 vertold=None | |
| 34 | |
| 35 def down_left(self): | |
| 36 pass | |
| 37 | |
| 38 def up_left(self): | |
| 39 pass | |
| 40 | |
| 41 def down_middle(self): | |
| 42 pass | |
| 43 | |
| 44 def up_middle(self): | |
| 45 pass | |
| 46 | |
| 47 def down_right(self): | |
| 48 pass | |
| 49 | |
| 50 def up_right(self): | |
| 51 pass | |
| 52 | |
| 53 def move(self, x, y): | |
| 54 pass | |
| 55 | |
| 56 horiz=None | |
| 57 vert=None | |
| 58 | |
| 59 def state_initial(self, byte): | |
| 60 if byte & 1<<6: | |
| 61 self.word1=byte | |
| 62 self.leftbutton = byte & 1<<5 | |
| 63 self.rightbutton = byte & 1<<4 | |
| 64 return 'horiz' | |
| 65 else: | |
| 66 return 'initial' | |
| 67 | |
| 68 def state_horiz(self, byte): | |
| 69 if byte & 1<<6: | |
| 70 return self.state_initial(byte) | |
| 71 else: | |
| 72 x=(self.word1 & 0x03)<<6 | (byte & 0x3f) | |
| 73 if x>=128: | |
| 74 x=-256+x | |
| 75 self.horiz = x | |
| 76 return 'vert' | |
| 77 | |
| 78 def state_vert(self, byte): | |
| 79 if byte & 1<<6: | |
| 80 # short packet | |
| 81 return self.state_initial(byte) | |
| 82 else: | |
| 83 x = (self.word1 & 0x0c)<<4 | (byte & 0x3f) | |
| 84 if x>=128: | |
| 85 x=-256+x | |
| 86 self.vert = x | |
| 87 self.snapshot() | |
| 88 return 'maybemiddle' | |
| 89 | |
| 90 def state_maybemiddle(self, byte): | |
| 91 if byte & 1<<6: | |
| 92 self.snapshot() | |
| 93 return self.state_initial(byte) | |
| 94 else: | |
| 95 self.middlebutton=byte & 1<<5 | |
| 96 self.snapshot() | |
| 97 return 'initial' | |
| 98 | |
| 99 def snapshot(self): | |
| 100 if self.leftbutton and not self.leftold: | |
| 101 self.down_left() | |
| 102 self.leftold=1 | |
| 103 if not self.leftbutton and self.leftold: | |
| 104 self.up_left() | |
| 105 self.leftold=0 | |
| 106 | |
| 107 if self.middlebutton and not self.middleold: | |
| 108 self.down_middle() | |
| 109 self.middleold=1 | |
| 110 if not self.middlebutton and self.middleold: | |
| 111 self.up_middle() | |
| 112 self.middleold=0 | |
| 113 | |
| 114 if self.rightbutton and not self.rightold: | |
| 115 self.down_right() | |
| 116 self.rightold=1 | |
| 117 if not self.rightbutton and self.rightold: | |
| 118 self.up_right() | |
| 119 self.rightold=0 | |
| 120 | |
| 121 if self.horiz or self.vert: | |
| 122 self.move(self.horiz, self.vert) | |
| 123 | |
| 124 def dataReceived(self, data): | |
| 125 for c in data: | |
| 126 byte = ord(c) | |
| 127 self.state = getattr(self, 'state_'+self.state)(byte) | |
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Chromium Code Reviews
Issue 12261012:
Remove third_party/twisted_8_1 (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/tools/build