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QT 实现滚屏显示多张漂亮美眉图片(可放大缩小)

作为新手小白的一些分享。。。。。。。

其中一部分功能要求显示多张图片,如果图片总高度超过工具窗口的高度就要有滚动条出现,实现滚屏的效果,网上这部分内容少之又少,我就把效果和代码都贴出来供大家参考。

想看QT 实现滚屏显示多张漂亮美眉片(可放大缩小),可以跳过第一种方式,直接看第二种方式。

我这里介绍两种方式,首先一种简单的方式,展示效果如下,实现QWidget的滚动条,在Qt Designer中,QScrollArea已经实现好的带有滚动条的控件。

QT 实现滚屏显示多张漂亮美眉图片(可放大缩小)

功能实现代码如下,非常简单。

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
 
class MainWindow(QMainWindow):
    def __init__(self,):
        super(QMainWindow,self).__init__()
        self.number = 0
 
        w = QWidget()
        self.setCentralWidget(w)
 
        self.topFiller = QWidget()
        self.topFiller.setMinimumSize(250, 2000)#######设置滚动条的尺寸



        lab1 = QLabel(self.topFiller)
        lab1.setPixmap(QPixmap('demo.jpg'))

        lab2 = QLabel(self.topFiller)
        lab2.setPixmap(QPixmap('demo.jpg'))
        lab2.move(0, 220)


        ##创建一个滚动条
        self.scroll = QScrollArea()
        self.scroll.setWidget(self.topFiller)
 
 
        self.vbox = QVBoxLayout()
        self.vbox.addWidget(self.scroll)
        w.setLayout(self.vbox)
 
        self.statusBar().showMessage("底部信息栏")
        self.resize(600, 500)
 
if __name__ == "__main__":
    app = QApplication(sys.argv)
    mainwindow = MainWindow()
    mainwindow.show()
    sys.exit(app.exec_())
           

第二种方式,用PyQt5高级界面控件QListWidget,先展示一下效果,实现显示漂亮美眉,哈哈哈哈哈哈,是我本人(害羞):

QT 实现滚屏显示多张漂亮美眉图片(可放大缩小)

UI界面代码实现如下:

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

# Form implementation generated from reading ui file 'ui_ImageBrowserWidget1.ui'
#
# Created by: PyQt5 UI code generator 5.14.2
#
# WARNING! All changes made in this file will be lost!


from PyQt5 import QtCore, QtGui, QtWidgets

"被jiemian调用 显示图片的缩略图 并且用滚动条"

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(400, 574)
        self.sliderScale = QtWidgets.QSlider(Form)
        self.sliderScale.setGeometry(QtCore.QRect(20, 0, 361, 22))
        self.sliderScale.setOrientation(QtCore.Qt.Horizontal)
        self.sliderScale.setObjectName("sliderScale")
        self.listWidgetImages = QtWidgets.QListWidget(Form)
        self.listWidgetImages.setGeometry(QtCore.QRect(10, 30, 371, 501))
        self.listWidgetImages.setDragEnabled(True)
        self.listWidgetImages.setMovement(QtWidgets.QListView.Static)
        self.listWidgetImages.setFlow(QtWidgets.QListView.LeftToRight)
        self.listWidgetImages.setResizeMode(QtWidgets.QListView.Adjust)
        self.listWidgetImages.setViewMode(QtWidgets.QListView.IconMode)
        self.listWidgetImages.setModelColumn(0)
        self.listWidgetImages.setObjectName("listWidgetImages")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(10, 540, 113, 32))
        self.pushButton.setObjectName("pushButton")

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.pushButton.setText(_translate("Form", "show plmm"))
           

业务逻辑代码如下,点击"show plmm"按钮,实现多张图片的显示,可放大缩小并滚动:

import sys
import cv2


from PyQt5.QtWidgets import QMainWindow, QApplication, QFileDialog
from PyQt5.QtWidgets import QWidget, QListWidgetItem, QListView
from PyQt5.QtGui import QImage, QPixmap, QIcon
from PyQt5.QtCore import Qt, QSize, pyqtSignal


from ui_ImageBrowserWidget1 import Ui_Form

"显示多张图片的缩略图 加滚动条"

FrameIdxRole = Qt.UserRole + 1


class MyMainForm(QMainWindow, Ui_Form):
    def __init__(self, parent=None):
        super(MyMainForm, self).__init__(parent)

        self.setupUi(self)

        self.pushButton.clicked.connect(self.display)


    def display(self):
        self.listWidgetImages.setViewMode(QListView.IconMode)
        self.listWidgetImages.setModelColumn(1)
        self.listWidgetImages.itemSelectionChanged.connect(self.onItemSelectionChanged)

        # slider
        self.sliderScale.valueChanged.connect(self.onSliderPosChanged)

        for i in range(100):
            image = cv2.imread('plmm.jpg')
            self.add_image_thumbnail(image,"图片",str(i))


    def add_image_thumbnail(self, image, frameIdx, name):
        self.listWidgetImages.itemSelectionChanged.disconnect(self.onItemSelectionChanged)

        height, width, channels = image.shape
        print(image.shape)
        bytes_per_line = width * channels
        print(bytes_per_line)
        qImage = QImage(image.data, width, height, bytes_per_line, QImage.Format_RGB888).rgbSwapped()
        pixmap = QPixmap.fromImage(qImage)

        item = QListWidgetItem(QIcon(pixmap), str(frameIdx) + ": " + name)
        item.setData(FrameIdxRole, frameIdx)

        self.listWidgetImages.addItem(item)

        # to bottom
        # self.listWidgetImages.scrollToBottom()
        self.listWidgetImages.setCurrentRow(self.listWidgetImages.count() - 1)

        print('\033[32;0m  --- add image thumbnail: {}, {} -------'.format(frameIdx, name))

        self.listWidgetImages.itemSelectionChanged.connect(self.onItemSelectionChanged)
        # self.listWidgetImages.it

    def resizeEvent(self, event):
        width = self.listWidgetImages.contentsRect().width()
        self.sliderScale.setMaximum(width)
        self.sliderScale.setValue(width - 40)

    def onItemSelectionChanged(self):
        pass

    def onSliderPosChanged(self, value):
        self.listWidgetImages.setIconSize(QSize(value, value))


if __name__ == "__main__":
    # 固定的,PyQt5程序都需要QApplication对象。sys.argv是命令行参数列表,确保程序可以双击运行
    app = QApplication(sys.argv)
    # 初始化
    myWin = MyMainForm()
    # 将窗口控件显示在屏幕上
    myWin.show()
    # 程序运行,sys.exit方法确保程序完整退出。
    sys.exit(app.exec_())