我要评论1、背景介绍
我们可以利用pyqt6创建一个图片查看器，其中包括，选则一个包含多张图片的文件夹，然后点击按钮【下一页】或者【上一页】进行图片的翻页
2、库的安装
| 库 | 用途 | 安装 |
|---|---|---|
| pyqt6 | 界面设计 | pip install pyqt6 -i https://pypi.tuna.tsinghua.edu.cn/simple/ |
3、核心代码
①：图片展示
def showimage(self, imagepath):
self.current_pixmap = qpixmap(imagepath)
self.resizeimage()
②：自适应尺寸缩放
def resizeimage(self):
if self.current_pixmap:
# 获取标签的大小
label_size = self.lb.size()
# 保持纵横比缩放图片以适应标签大小
scaled_pixmap = self.current_pixmap.scaled(
label_size.width(),
label_size.height(),
qt.aspectratiomode.keepaspectratio,
qt.transformationmode.smoothtransformation
)
self.lb.setpixmap(scaled_pixmap)
4、完整代码
import sys
import os
from pyqt6.qtcore import qt
from pyqt6.qtgui import qpixmap
from pyqt6.qtwidgets import qwidget, qvboxlayout, qapplication, qlabel, qfiledialog, qpushbutton, qhboxlayout
class mywidget(qwidget):
def __init__(self, parent=none):
super(mywidget, self).__init__(parent)
self.setwindowtitle("图片浏览器")
self.resize(500, 350)
# 修改 qlabel 的设置
self.lb = qlabel()
self.lb.setminimumsize(200, 200) # 设置最小尺寸
self.lb.setalignment(qt.alignmentflag.aligncenter) # 居中对齐
# 选择文件夹按钮
self.selectfolderbutton = qpushbutton("选择文件夹")
self.selectfolderbutton.clicked.connect(self.selectfolder)
# 上一张按钮
self.prevbutton = qpushbutton("上一张")
self.prevbutton.clicked.connect(self.showprevimage)
# 下一张按钮
self.nextbutton = qpushbutton("下一张")
self.nextbutton.clicked.connect(self.shownextimage)
# 默认图片列表
self.imagefiles = []
self.currentindex = -1
self.current_pixmap = none # 添加存储当前图片的变量
# 布局设置
layout = qvboxlayout()
# 图片标签占据主要空间
layout.addwidget(self.lb, 1) # 添加拉伸因子1
# 按钮布局
buttonlayout = qhboxlayout()
buttonlayout.addwidget(self.prevbutton)
buttonlayout.addwidget(self.selectfolderbutton)
buttonlayout.addwidget(self.nextbutton)
layout.addlayout(buttonlayout)
self.setlayout(layout)
def selectfolder(self):
folderpath = qfiledialog.getexistingdirectory(self, "选择文件夹")
if folderpath:
self.imagefiles = [os.path.join(folderpath, f) for f in os.listdir(folderpath)
if f.lower().endswith(('.png', '.jpg', '.jpeg', '.bmp', '.gif'))]
self.currentindex = 0
if self.imagefiles:
self.showimage(self.imagefiles[self.currentindex])
def showimage(self, imagepath):
self.current_pixmap = qpixmap(imagepath)
self.resizeimage()
def showprevimage(self):
if self.imagefiles and self.currentindex > 0:
self.currentindex -= 1
self.showimage(self.imagefiles[self.currentindex])
def shownextimage(self):
if self.imagefiles and self.currentindex < len(self.imagefiles) - 1:
self.currentindex += 1
self.showimage(self.imagefiles[self.currentindex])
def resizeevent(self, event):
super().resizeevent(event)
self.resizeimage()
def resizeimage(self):
if self.current_pixmap:
# 获取标签的大小
label_size = self.lb.size()
# 保持纵横比缩放图片以适应标签大小
scaled_pixmap = self.current_pixmap.scaled(
label_size.width(),
label_size.height(),
qt.aspectratiomode.keepaspectratio,
qt.transformationmode.smoothtransformation
)
self.lb.setpixmap(scaled_pixmap)
if __name__ == '__main__':
app = qapplication(sys.argv)
w = mywidget()
w.show()
sys.exit(app.exec())
最后效果
以上就是python+pyqt6编写一个图片播放器的详细内容，更多关于python图片播放器的资料请关注代码网其它相关文章！
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