怎么用PyQT5制作一个桌面摸鱼工具

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按键功能控制

q 退出

B 书签功能

F 增加字体大小

Shift F 减小字体

O 打开文件，现在仅仅支持 utf8格式的txt文件

主要功能

FlameLess Window 无边框窗口

一键快速退出

ini 文件读写

右键上下文菜单

核心代码

pyqt 实现功能还是比较顺畅的，总体功能实现代码量不到200行

from PyQt5 import QtCorefrom PyQt5.QtWidgets import *from PyQt5.QtGui import *from PyQt5.QtCore import Qtimport sys,osimport configparser# Q to quit app# B Bookmark # F increase Font size # Shift F decrease Font size# O Open *.txt fileclass FisherReader(QMainWindow):        def __init__(self):                super().__init__()                                # drag                self.pos =[0,0]                self.mouse_down = False                self.down = [0,0]                self.prev = [0,0]                # text                self.txtName = ''                self.text = []                self.index = 0                # style                self.show_info = False                self.font_size = 8                self.bgColor = QColor(255,255,255)                self.defPalette()                # self.read_Txt()        def mousePressEvent(self, event):                current = [event.pos().x(),event.pos().y()]                self.down = current                self.mouse_down = True        def mouseMoveEvent(self,event):                current = [event.pos().x(),event.pos().y()]                if self.mouse_down:                        delta = [current[0]-self.down[0],current[1]-self.down[1]]                        new = [self.pos[0]+delta[0],self.pos[1]+delta[1]]                        self.move(new[0],new[1])                        self.pos = new                        # print(self.pos)                        self.prev = current        def mouseReleaseEvent(self, event):                self.mouse_down = False        def keyPressEvent(self,event):                if event.key() == Qt.Key_Q:                        app.quit()                if event.key() == Qt.Key_Down:                        if self.index < len(self.text)-1:                                self.index = self.index+1                                self.update()                if event.key() == Qt.Key_Up:                        if self.index > 0:                                self.index = self.index-1                                self.update()                if event.key() == Qt.Key_F:                        if event.modifiers() & QtCore.Qt.ShiftModifier and self.font_size >2:                                self.font_size -= 2                        else:                                self.font_size += 2                        self.update()                if event.key() == Qt.Key_I:                        self.show_info = not self.show_info                        self.update()                if event.key() == Qt.Key_O:                        self.open()                        self.update()                if event.key() == Qt.Key_B:                        self.addBookmark()                if event.key() == Qt.Key_R:                        self.getBookmark()                                def defPalette(self):                p = self.palette()                p.setColor(QPalette.Background,self.bgColor)                self.window().setPalette(p)        def paintEvent(self,event):                painter = QPainter(self)                painter.setRenderHints(QPainter.Antialiasing)                if len(self.text)>0:                        painter.setFont(QFont('SimSun',self.font_size))                        painter.drawText(QtCore.QRectF(10,10,600,50),Qt.AlignLeft,self.text[self.index])                        if self.show_info:                                painter.drawText(QtCore.QRectF(610,10,50,50),Qt.AlignLeft,"{}/{}".format(self.index+1,len(self.text)))        def open(self):                path, _ = QFileDialog.getOpenFileName(self, "打开文件",os.getcwd(), "Text files (*.txt)")                if path:                        self.txtName = path                        self.read_Txt_smart(path)                        self.update()        def read_Txt(self,file):                with open(file,'r',encoding="UTF-8") as f:                        self.text = f.readlines()        def cut(self,text,length):                return [text[i:i+length] for i in range(0,len(text),length)]        def wheelEvent(self, e):                if e.angleDelta().y() < 0:                        if self.index < len(self.text)-1:                                self.index = self.index+1                elif e.angleDelta().y() > 0:                        if self.index > 0:                                self.index = self.index-1                self.update()          def addBookmark(self):                config = configparser.ConfigParser()                path = "bookmark.ini"                config.add_section('bookmark')                config.set('bookmark','path',self.txtName)                config.set('bookmark','bookmark',str(self.index))                config.write(open(path,'w'))        def getBookmark(self):                config = configparser.ConfigParser()                path = "bookmark.ini"                config.read(path)                if config.has_option('bookmark','path'):                        self.txtName = config.get('bookmark','path')                        self.index = int(config.get('bookmark','bookmark'))                        self.read_Txt_smart(self.txtName);                        self.update()        def read_Txt_smart(self,file):                with open(file,'r',encoding="UTF-8") as f:                        text_buffer = []                        lines = f.readlines()                        for line in lines:                                cline = self.cut(line,30)                                for cl in cline:                                        if len(cl)>1:                                                text_buffer.append(cl)                        self.text = text_bufferif __name__ == '__main__':        app = QApplication(sys.argv)        fisher = FisherReader()        fisher.resize(660,45)        fisher.setWindowFlags(Qt.FramelessWindowHint|Qt.WindowStaysOnTopHint)        fisher.show()        fisher.setWindowTitle("小鱼")        sys.exit(app.exec_())

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