Hi.
I'm trying to create a turntable viewer and in need of some guidance
please. In this view, I want to be able to click and hold left mouse button
then drag left/right to turn the turntable, which are image sequences.
My questions:
- Is there other way I should approach this? The mouse move event triggers
too fast and when I try to print out new image names they appear too
rapidly.
- How can I detect if I am moving mouse left or right?
- The pixmap doesn't seem to repaint even if I explicitly tells it to.
Appreciate any help. Thank you!
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# -*- coding: utf-8 -*-
import sys
from os.path import dirname, realpath, join
from PySide.QtGui import (QApplication, QVBoxLayout, QLabel, QPixmap,
QWidget)
from PySide import QtCore
class PlayTurntable(QWidget):
def __init__(self, images, parent=None):
super(PlayTurntable, self).__init__(parent)
self.label = QLabel()
self.label.setFixedWidth(300)
self.label.setFixedHeight(200)
layout = QVBoxLayout()
layout.addWidget(self.label)
self.setLayout(layout)
self.images = images
self.image_index = 0
self.pic = QPixmap(self.images[self.image_index])
self.label.setPixmap(self.pic.scaled(300, 200, QtCore.Qt.KeepAspectRatio))
self.installEventFilter(self)
def eventFilter(self, obj, event):
if event.type() == event.MouseMove:
if event.buttons() == QtCore.Qt.LeftButton:
self.increase_pic()
event.accept()
return True
return True
def increase_pic(self):
self.image_index += 1
if self.image_index >= len(self.images):
self.image_index = 0
self.pic.load(self.images[self.image_index])
self.label.setPixmap(
self.pic.scaled(300, 200, QtCore.Qt.KeepAspectRatio))
self.label.repaint()
if __name__=='__main__':
current_path = dirname(realpath(__file__))
images = ['turn1.jpg', 'turn2.jpg', 'turn3.jpg', 'turn4.jpg']
for index, value in enumerate(images):
images[index] = join(current_path, value)
app = QApplication(sys.argv)
PT = PlayTurntable(images)
PT.show()
sys.exit(app.exec_())
