这篇文章主要介绍了linux下python抓屏实现方法,涉及Python操作屏幕截取的相关技巧,需要的朋友可以参考下
本文实例讲述了linux下python抓屏实现方法。分享给大家供大家参考。具体实现代码如下:
- #!/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()
希望本文所述对大家的Python程序设计有所帮助。
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