Python实现一个小小的图片播放器，就是这么简单！

零、小序

Python是一个语法简单的语言，Python的框架却没有那么简单，真想学好Python来做项目并不是一件简单的事情，这里在windows下用PyCharm开发，使用PyQt5来实现了一个小小的图片播放器。

一、图片播放器介绍

1、功能介绍

使用PyQt5这个强大的库来实现界面和图片浏览功能，界面使用QtDesigner来设计并通过PyUIC把Qt设计师绘制的界面转化为Python代码，界面布局主要有QMainWindow和QLabel这另两个空间来实现。该工具支持单张图片的打开和打开文件夹两种功能，图片显示使用QLabel+QPixmap来显示，界面的周边使用QLabel增加了一些动态文字的显示功能。

2、用到的技术

主要使用到PyQt5的信号和槽处理机制、QTimer定时器的使用、Qt设计师的使用、QLabel的使用、QPixmap的使用、QFileDialog打开文件和文件夹的使用等技术，详细使用情况请看代码。Qt设计师的使用可以参考我之前写的一篇文章：https://blog.csdn.net/toby54king/article/details/101383374

3、图片播放效果

下图是操作和效果，为了减小动态图占用空间，录制的动态图做了一些减帧处理，效果看着可能有些不是很好。

二、主要代码

1、Python代码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'ScanPicture.ui'
#
# Created by: PyQt5 UI code generator 5.13.1
#
# WARNING! All changes made in this file will be lost!


from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import QTimer

import sys,os

class Ui_MainWindow(object):
    def __init__(self):
        # 存储图片vector
        self.vector = []
        self.posTop = 0
        self.posBottom = 0
        self.posLeft = 0
        self.posRight = 0
        self.index = 0

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(891, 685)
        font = QtGui.QFont()
        font.setPointSize(9)
        MainWindow.setFont(font)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        font = QtGui.QFont()
        font.setPointSize(15)
        font.setBold(False)
        font.setWeight(50)
        self.centralwidget.setFont(font)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setSpacing(0)
        self.gridLayout.setObjectName("gridLayout")
        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setSpacing(0)
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.labelLeft = QtWidgets.QLabel(self.centralwidget)
        self.labelLeft.setMinimumSize(QtCore.QSize(25, 0))
        self.labelLeft.setMaximumSize(QtCore.QSize(25, 16777215))
        self.labelLeft.setStyleSheet("background-color: rgb(255, 170, 127);")
        self.labelLeft.setObjectName("labelLeft")
        self.horizontalLayout.addWidget(self.labelLeft)
        self.verticalLayout = QtWidgets.QVBoxLayout()
        self.verticalLayout.setSpacing(0)
        self.verticalLayout.setObjectName("verticalLayout")
        self.labelTop = QtWidgets.QLabel(self.centralwidget)
        self.labelTop.setMinimumSize(QtCore.QSize(0, 25))
        self.labelTop.setMaximumSize(QtCore.QSize(16777215, 25))
        self.labelTop.setStyleSheet("background-color: rgb(255, 255, 127);")
        self.labelTop.setObjectName("labelTop")
        self.verticalLayout.addWidget(self.labelTop)
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setStyleSheet("background-color: qradialgradient(spread:pad, cx:0.5, cy:0.5, radius:0.5, fx:0.5, fy:0.5, stop:0 rgba(255, 255, 255, 255), stop:0.1 rgba(255, 255, 255, 255), stop:0.2 rgba(255, 176, 176, 167), stop:0.3 rgba(255, 151, 151, 92), stop:0.4 rgba(255, 125, 125, 51), stop:0.5 rgba(255, 76, 76, 205), stop:0.52 rgba(255, 76, 76, 205), stop:0.6 rgba(255, 180, 180, 84), stop:1 rgba(255, 255, 255, 0));")
        self.label.setAlignment(QtCore.Qt.AlignCenter)
        self.label.setObjectName("label")
        self.verticalLayout.addWidget(self.label)
        self.labelBottom = QtWidgets.QLabel(self.centralwidget)
        self.labelBottom.setMinimumSize(QtCore.QSize(0, 25))
        self.labelBottom.setMaximumSize(QtCore.QSize(16777215, 25))
        self.labelBottom.setStyleSheet("background-color: rgb(255, 255, 127);")
        self.labelBottom.setObjectName("labelBottom")
        self.verticalLayout.addWidget(self.labelBottom)
        self.horizontalLayout.addLayout(self.verticalLayout)
        self.labelRight = QtWidgets.QLabel(self.centralwidget)
        self.labelRight.setEnabled(True)
        self.labelRight.setMinimumSize(QtCore.QSize(25, 0))
        self.labelRight.setMaximumSize(QtCore.QSize(25, 16777215))
        self.labelRight.setStyleSheet("background-color: rgb(255, 170, 127);")
        self.labelRight.setScaledContents(False)
        self.labelRight.setObjectName("labelRight")
        self.horizontalLayout.addWidget(self.labelRight)
        self.gridLayout.addLayout(self.horizontalLayout, 0, 0, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 891, 23))
        self.menubar.setObjectName("menubar")
        self.menu = QtWidgets.QMenu(self.menubar)
        self.menu.setObjectName("menu")
        MainWindow.setMenuBar(self.menubar)
        self.actionOpenFile = QtWidgets.QAction(MainWindow)
        self.actionOpenFile.setObjectName("actionOpenFile")
        self.actionOpenDir = QtWidgets.QAction(MainWindow)
        self.actionOpenDir.setObjectName("actionOpenDir")
        self.menu.addAction(self.actionOpenFile)
        self.menu.addAction(self.actionOpenDir)
        self.menubar.addAction(self.menu.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
        # 初始化信息
        self.initInfo()
        #添加信号和槽连接
        self.actionOpenDir.triggered.connect(self.openPicDir)
        self.actionOpenFile.triggered.connect(self.openPicFile)
        self.timerPicture = QTimer()
        self.timerText = QTimer()
        self.timerPicture.timeout.connect(self.timerShowPic)
        self.timerText.timeout.connect(self.timerShowText)
        self.timerPicture.start(1000)
        self.timerText.start(500)


    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "ScanPicture"))
        self.labelLeft.setText(_translate("MainWindow", "LeftLabe"))
        self.labelTop.setText(_translate("MainWindow", "Top"))
        self.label.setText(_translate("MainWindow", "Love"))
        self.labelBottom.setText(_translate("MainWindow", "Botton Label"))
        self.labelRight.setText(_translate("MainWindow", "RightLabel"))
        self.menu.setTitle(_translate("MainWindow", "File"))
        self.actionOpenFile.setText(_translate("MainWindow", "OpenFile"))
        self.actionOpenDir.setText(_translate("MainWindow", "OpenDir"))

    #初始化界面信息
    def initInfo(self):
        self.labelLeftText = "爱她就把你的工资交给她,爱她就把你的工资交给她"
        self.labelRightText = "爱她房产证上就写她的名,爱她房产证上就写她的名"
        self.labelTopText = "爱人生，爱微笑，一个爱分享的程序猿！欢迎关注！"
        self.labelBottomText = "xx月xx日即腊月xx是xx女士与xx先生的婚礼欢迎您的参加"

    # 打开图片目录
    def openPicDir(self):
        self.timerPicture.start()
        dirPic = QFileDialog.getExistingDirectory(None,"OpenDir",".")
        #print("dirPic:%s"%dirPic)
        for dir,subdir,files in os.walk(dirPic):
            #print("files:%s"%files)
            for file in files:
                #print("file:%s"%file)
                splitStr = os.path.splitext(file)[1]
                #print("splitStr:%s"%splitStr)
                if splitStr == '.jpg':
                    picPath = os.path.join(dirPic,file)
                    #print("picPath:%s"%picPath)
                    self.vector.append(picPath)

    # 打开图片文件
    def openPicFile(self):
        self.timerPicture.stop() # 当需要单独查看图片时，需要关闭正在循环播放的图片
        self.vector.clear()
        filePic = QFileDialog.getOpenFileName(None,"openFile",".","*.jpg *.png *.gif")
        print("openPicFile--------------")
        print("filePic:%s"%filePic[0])
        if len(filePic[0])>0:
            self.label.setPixmap(QPixmap(filePic[0]))

    # 循环定时播放文件夹中的图片
    def timerShowPic(self):
        print("index=%s"%self.index)
        #当文件夹中的图片浏览完后从头再次开始播放
        if self.index == len(self.vector):
            self.index = 0

        if len(self.vector) > 0:
            print("vector_len=%s" %len(self.vector))
            self.image = QImage(self.vector[self.index])
            #设置图片缩放保持原来的比例
            self.scalePic = self.image.scaled(self.label.width(),self.label.height(),Qt.KeepAspectRatio,Qt.SmoothTransformation)
            self.label.setPixmap(QPixmap(self.scalePic))
            self.index += 1

    # 显示文字
    def timerShowText(self):
        #当文字加载完后，重置从头加载
        if self.posTop > len(self.labelTopText):
            self.posTop = 0

        if self.posBottom > len(self.labelBottomText):
            self.posBottom = 0

        if self.posLeft > len(self.labelLeftText):
            self.posLeft = 0

        if self.posRight > len(self.labelRightText):
            self.posRight = 0

        self.labelTop.setText(self.labelTopText[0:self.posTop])
        self.labelBottom.setText(self.labelBottomText[0:self.posBottom])
        self.labelLeft.setText(self.labelLeftText[0:self.posLeft])
        self.labelLeft.setWordWrap(True)
        self.labelRight.setText(self.labelRightText[0:self.posRight])
        self.labelRight.setWordWrap(True)

        self.posTop += 1
        self.posBottom += 1
        self.posLeft += 1
        self.posRight += 1

if __name__ == "__main__":
    app = QApplication(sys.argv)
    MainWindow = QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

2、代码下载地址

为了方便界面设计，使用了Qt设计师，生成的有UI文件，这里没法粘贴，这个工程的代码下载地址在这里：https://download.csdn.net/download/toby54king/12281508

能力有限，如有错误，多多指教！原创不易，点赞鼓励一下吧！