Python怎么实现截图生成符合markdown的链接(markdown,python,开发技术)

思路

程序的整体思路是，首先需要给界面来设置存储的类型，即是选择存在阿里OSS还是七牛的Kodo还是其他的云存储，还有设置key和secret以及不同存储类型所需要的属性，接着界面可以显示复制的图片，以及上传成功后的markdownUrl和httpUrl,界面大体如下

子界面：

主界面：

实现

程序整体选择用python来实现，因为之前用过QT，所以GUI的框架用的是pyqt5，数据库用的是sqlite3，还有阿里云和七牛的sdk等。

整个界面有一个主窗口和一个子窗口构成，主界面在初始化的同时初始化数据库

classImgFrame(QMainWindow):def__init__(self):super().__init__()self.http_url=Noneself.markdown_url=Noneself.clipboard=Noneself.img=None#初始化数据库self.db=init_db()self.init_ui()definit_ui(self):self.setGeometry(300,300,500,500)self.setWindowTitle('MarkDown-Img')widget=QWidget()setupAction=QAction(QIcon('setup.png'),'设置',self)setupAction.setStatusTip('Exitapplication')setupAction.triggered.connect(self.a)menubar=QMenuBar(self)menubar.setGeometry(QtCore.QRect(0,0,251,23))menubar.setObjectName("menubar")setup=menubar.addMenu('系统')setup.addAction(setupAction)menubar.setVisible(True)menubar.setNativeMenuBar(False)self.setMenuBar(menubar)self.img=QLabel()layout=QVBoxLayout()layout.addWidget(markdown_widget(self))layout.addWidget(url_widget(self))layout.addWidget(self.img)layout.setAlignment(Qt.AlignCenter)self.clipboard=QApplication.clipboard()self.clipboard.dataChanged.connect(self.paste)widget.setLayout(layout)self.setCentralWidget(widget)self.show()

definit_db():connect=sqlite3.connect('markdown-img.db')globalconn#全局变量connconn=connectcursor=connect.cursor()cursor.execute(sql)#返回游标returncursor

子窗口的主要作用就是设置云存储所需要的各种字段，然后存储到数据库中

classsecondFrame(QWidget):def__init__(self,db):super().__init__()#self.init_ui()self.db=dbself.resize(400,100)self.setWindowTitle('存储设置')formlayout=QFormLayout()storageLabel=QLabel("存储")self.storageBox=QComboBox()self.storageBox.addItems(['阿里OSS','七牛Kodo'])self.endpointLabel=QLabel("endpoint")self.endpointLineEdit=QLineEdit("")self.endpointLineEdit.setStyleSheet("width:200px")self.qntLabel=QLabel("七牛域名")self.qnLineEdit=QLineEdit("")self.qnLineEdit.setStyleSheet("width:200px")keyLabel=QLabel("access_key")self.keyLineEdit=QLineEdit("")self.keyLineEdit.setStyleSheet("width:350px")secretLabel=QLabel("secret_key")self.secretLineEdit=QLineEdit()self.secretLineEdit.setStyleSheet("width:350px")self.secretLineEdit.setText('')bucketLabel=QLabel("bucket_name")self.bucketLineEdit=QLineEdit("")confirmButton=QPushButton("确定")formlayout.addRow(storageLabel,self.storageBox)formlayout.addRow(bucketLabel,self.bucketLineEdit)formlayout.addRow(self.endpointLabel,self.endpointLineEdit)formlayout.addRow(self.qntLabel,self.qnLineEdit)self.qntLabel.setVisible(False)self.qnLineEdit.setVisible(False)formlayout.addRow(keyLabel,self.keyLineEdit)formlayout.addRow(secretLabel,self.secretLineEdit)formlayout.addRow(confirmButton)self.storageBox.currentIndexChanged[int].connect(self.changeLabel)confirmButton.clicked.connect(self.confirm)self.setLayout(formlayout)self.setVisible(True)

子窗口是通过主窗口的菜单栏的设置菜单触发

setupAction=QAction(QIcon('setup.png'),'设置',self)setupAction.setStatusTip('Exitapplication')setupAction.triggered.connect(self.openSecondFrame)defopenSecondFrame(self):self.frame=secondFrame(self.db)self.frame.show()

监听剪贴板的功能通过pyqt中的clipboard来监听剪贴板的实现

self.clipboard.dataChanged.connect(self.paste)defpaste(self):data=self.clipboard.mimeData()ifdata.hasImage():print(data.formats())pixmap=self.clipboard.pixmap()height=pixmap.height()width=pixmap.width()ifheight>300andwidth>300:self.img.setPixmap(shrink_img(pixmap))else:self.img.setPixmap(pixmap)fileName='ink_'+''.join(str(uuid.uuid1()).split('-'))+'.png'self.clipboard.pixmap().save(fileName,'PNG')urls=generate_url(self.upload(fileName))print(urls)self.img.setScaledContents(True)self.markdown_url.setText(urls['markdown_url'])self.http_url.setText(urls['http_url'])pyperclip.copy(urls['markdown_url'])defshrink_img(pixmap):scale=0.3height=pixmap.height()width=pixmap.width()shrink_height=int(height*scale)shrink_width=int(width*scale)size=QSize(shrink_width,shrink_height)image=pixmap.toImage()returnQPixmap.fromImage(image.scaled(size,Qt.IgnoreAspectRatio))

defupload(self,filename):type,storage=self.get_storage_data()iftype=='阿里OSS':url=upload2ali(storage,filename)returnurldefget_storage_data(self):self.db.execute(select_sql)data=self.db.fetchone()bucket_name=data[1]extra=data[2]key=data[3]secret=data[4]ifdata[0]=='阿里OSS':bucket=init_ali(bucket_name,extra,key,secret)return'阿里OSS',{'bucket':bucket,'bucket_name':bucket_name,'extra':extra}

当图片上传成功后，默认会生成markdown的图片url,然后将这个url设置到剪贴板中，然后在marktext中只需要粘贴就能贴上图床的图片，因为pyqt为了防止死循环，不允许通过剪贴板设置内容，所以我们可以通过pyperclip来设置剪贴板

pyperclip.copy(urls['markdown_url'])