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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 " You 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)
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原文地址：http://www.cnblogs.com/mhxy13867806343/p/4207365.html
