linux下python抓屏實現方法

 　　本文實例講述了linux下python抓屏實現方法。分享給大家供大家參考。具體實現代碼如下：

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 #!/usr/bin/python '''by zevolo, 2012.12.20 ''' import gtk.gdk import gtk import glib class MyRect(): def __init__(self, x = 0, y = 0, w = 0, h = 0): self.x = x self.y = y self.w = w self.h = h def __init__(self, x, y): self.x = min(int(x.x), int(y.x)) self.y = min(int(x.y), int(y.y)) self.w = abs(int(y.x - x.x)) self.h = abs(int(y.y - x.y)) class MyPair(): def __init__(self, x = 0, y = 0): self.x = x self.y = y class MyPoint(MyPair): def __init__(self, x = 0, y = 0): MyPair.__init__(self, x, y) class MySize(MyPair): def __init__(self, w = 0, h = 0): MyPair.__init__(self, x, y) class MyCapture(): (event_enter, event_leave) = (0, 1) def __init__(self): pass def capture(self): pass def handleEvent(self, event): if event == event_enter: enterSnap() elif event == event_leave: leaveSnap() def enterSnap(self): pass def leaveSnap(self): pass def snap(self, window = None, rect = None, name = None): pass class MyCaptureGtk(MyCapture): def __init__(self): MyCapture.__init__(self) self.window = gtk.Window() self.window.set_default_size(1,1) self.window.connect("button-press-event", self.button_press_cb) self.first = None self.second = None self.window.show() #self.window.set_events(gtk.gdk.BUTTON_PRESS_MASK) def getWindow(self): return self.window def button_press_cb(self, widget, event): #print "type is %d" % event.type if event.type == gtk.gdk.BUTTON_PRESS: if event.button == 1: #left button print "(%d, %d), (%d, %d), button is %d" % (event.x_root, event.y_root, event.x, event.y, event.button) if not self.first: self.first = MyPoint(event.x_root, event.y_root) else: self.second = MyPoint(event.x_root, event.y_root) self.snap(None, MyRect(self.first, self.second)) self.first = None elif event.button == 3: #right button self.uncapture() else: pass def uncapture(self): if self.first: print "cancel" self.first = None else: print "exit now" gtk.gdk.pointer_ungrab() gtk.mainquit() def capture(self, time = 0L): cursor = gtk.gdk.Cursor(gtk.gdk.display_get_default(), gtk.gdk.CROSSHAIR) ret = gtk.gdk.pointer_grab(self.window.window, True, gtk.gdk.BUTTON_PRESS_MASK, None, cursor, time) if ret == gtk.gdk.GRAB_SUCCESS: print "left button start, end, right button cancel/exit" else: print "failed to capture %d, (viewable %d),(frozen %d), (already %d)" % (ret, gtk.gdk.GRAB_NOT_VIEWABLE, gtk.gdk.GRAB_FROZEN, gtk.gdk.GRAB_ALREADY_GRABBED) def snap(self, window = None, rect = None, name = None): w = window if not window: #w = gtk.gdk.get_default_root_window() d = gtk.gdk.display_get_default() w = d.get_default_screen().get_root_window() r = rect if not r: sz = w.get_size() r = MyRect(0, 0, sz[0], sz[1]) print "The size of the window is (%d, %d, %d, %d)" % (r.x, r.y, r.w, r.h) n = name if not n: n = "screenshot.png" buf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,False,8, r.w, r.h) buf = buf.get_from_drawable(w,w.get_colormap(), r.x, r.y, 0, 0, r.w, r.h) if (buf != None): buf.save(n, "png") print "Screenshot saved to %s." % n else: print "Unable to get the screenshot." def timeout(data): #print "timeout" data.capture() if __name__ == '__main__': cap = MyCaptureGtk() w = cap.getWindow() w.show() glib.timeout_add_seconds(1, timeout, cap) #cap.snap() gtk.main()

　　希望本文所述對大家的Python程序設計有所幫助。