？？？？？？？？？？？？

Import Sys

Import OS

Import Utils

From PYQT4 import Qtgui,qtcore

Class Slideshowpics (Qtgui.qmainwindow):

"" "Slideshowpics class defines the methods for UI and

Working logic

"""

def __init__ (self, Imglst, Parent=none):

Super (Slideshowpics, self). __init__ (parent)

# Self._path = Path

Self._imagecache = []

Self._imagesinlist = Imglst

Self._pause = False

Self._count = 0

Self.animflag = True

Self.updatetimer = Qtcore.qtimer ()

Self.connect (Self.updatetimer, Qtcore.signal ("timeout ()"), Self.nextimage)

Self.prepairwindow ()

Self.nextimage ()

def prepairwindow (self):

# Centre UI

Screen = Qtgui.qdesktopwidget (). Screengeometry (self)

Size = Self.geometry ()

Self.move ((Screen.width ()-size.width ())/2, (Screen.height ()-size.height ())/2)

Self.setstylesheet ("qwidget{}")

Self.setwindowflags (QtCore.Qt.WindowStaysOnTopHint)

Self.buildui ()

Self.showfullscreen ()

Self.playpause ()

def buildui (self):

Self.label = Qtgui.qlabel ()

Self.label.setAlignment (QtCore.Qt.AlignCenter)

Self.setcentralwidget (Self.label)

def nextimage (self):

"" "Switch to next image or previous image

"""

If self._imagesinlist:

if Self._count = = Len (self._imagesinlist):

Self._count = 0

Self.showimagebypath (

Self._imagesinlist[self._count])

If Self.animflag:

Self._count + = 1

Else

Self._count-= 1

def showimagebypath (self, Path):

If path:

Image = Qtgui.qimage (path)

pp = QtGui.QPixmap.fromImage (image)

Self.label.setPixmap (pp.scaled (

Self.label.size (),

QtCore.Qt.KeepAspectRatio,

QtCore.Qt.SmoothTransformation))

def playpause (self):

If not self._pause:

Self._pause = True

Self.updateTimer.start (2500)

Return Self._pause

Else

Self._pause = False

Self.updateTimer.stop ()

def keypressevent (self, keyevent):

"" "Capture key to exit, next image, previous image,

On Escape, key-right and key-left respectively.

"""

event = Keyevent.key ()

If event = = QtCore.Qt.Key_Escape:

Self.close ()

If event = = QtCore.Qt.Key_Left:

Self.animflag = False

Self.nextimage ()

If event = = QtCore.Qt.Key_Right:

Self.animflag = True

Self.nextimage ()

If event = = 32:

Self._pause = Self.playpause ()

def main (paths):

If isinstance (Paths, list):

Imglst = utils.imagefilepaths (Paths)

Elif isinstance (Paths, str):

Imglst = Utils.imagefilepaths ([Paths])

Else

Print "Can either enter a list of paths or single path"

App = Qtgui.qapplication (SYS.ARGV)

If Imglst:

window = Slideshowpics (imglst)

Window.show ()

Window.raise_ ()

APP.EXEC_ ()

Else

MsgBox = Qtgui.qmessagebox ()

Msgbox.settext ("No Image found in any of the paths below\n\n%s"% paths)

Msgbox.setstandardbuttons (Msgbox.cancel | msgbox.open);

If msgbox.exec_ () = = Msgbox.open:

Main (Str (QtGui.QFileDialog.getExistingDirectory (None),

"Select Directory to Slideshow",

OS.GETCWD ())))

if __name__ = = ' __main__ ':

Curntpaths = OS.GETCWD ()

If Len (SYS.ARGV) > 1:

Curntpaths = sys.argv[1:]

Main (curntpaths)

？？？？？？？？？？？？