PyQt实现界面翻转切换效果

yipeiwu_com6年前Python基础

PyQt实现界面翻转切换效果是用qt的场景功能来实现的,用到了QGraphicsView,QGraphicsLinearLayout,QGraphicsWidget等有关qt场景的库。算是对qt场景的一个小小的尝试,涉及内容不深,程序效果并是随心所欲,需要去进一步的改善和提高。暂且先把代码贴在此处,供大家学习和指正。

工程包括四个类:

界面A,TestMainWindow,用来充当翻转效果的A面。
界面B,TestMainWindowTwo,用来充当翻转效果的B面。
绘图界面:TestGraphicWidget,用来绘制界面A和B。
主界面:MainWindow,是一个全屏的透明窗口,是整个效果展现的总舞台,内部包含一个QGraphicsScene和一个QGraphicsView,用来展示效果中的界面翻转和界面替换。

整个效果的原理总结为几点:

首先,将整个效果需要的所有界面添加到TestGraphicWidget中,在将TestGraphicWidget放入到QGraphicsScene中,然后经QGraphicsScene添加到主界面中。
然后,界面切换实现,两个函数,非常简单,要显示A,就把B移除并隐藏,要显示B,则把A移除并隐藏。

def setOne(self): 
  self.twoWidget.hide() 
  self.oneWidget.show() 
  self.layout.removeItem(self.twoTestWidget) 
  self.layout.addItem(self.oneTestWidget) 
  self.view.update() 
   
def setTwo(self): 
  self.oneWidget.hide() 
  self.twoWidget.show() 
  self.layout.removeItem(self.oneTestWidget) 
  self.layout.addItem(self.twoTestWidget) 
  self.view.update() 

然后是最重要的,翻转效果的实现,用的是TestGraphicWidget特有的翻转方法,参数可以根据实景情况调整。

def transeformR(self,count): 
  r = self.form.boundingRect() 
  for i in range(1,count): 
    self.form.setTransform(QTransform() 
                .translate(r.width() / 2, r.height() / 2) 
                .rotate(91.00/count*i - 360 * 1, Qt.YAxis) 
                .translate(-r.width() / 2, -r.height() / 2)) 
    self.waitMethod() 
    self.view.update() 
   
  self.form.setTransform(QTransform() 
                .translate(r.width() / 2, r.height() / 2) 
                .rotate(270 - 360 * 1, Qt.YAxis) 
                .translate(-r.width() / 2, -r.height() / 2)) 
  self.view.update() 
  if self.formflag %2 == 0: 
    self.setOne() 
  else: 
    self.setTwo() 
   
  for i in range(1,count): 
    self.form.setTransform(QTransform() 
                  .translate(r.width() / 2, r.height() / 2) 
                  .rotate(270 + 93.00/count*i - 360 * 1, Qt.YAxis) 
                  .translate(-r.width() / 2, -r.height() / 2)) 
    self.waitMethod() 
    self.view.update() 

而且提供了两种让程序等待但界面不会卡死的方法:

def sleep(self,msec): 
     
  dieTime = QTime.currentTime().addMSecs(msec) 
   
  print dieTime,QTime.currentTime() 
  #a = 0 
  while( QTime.currentTime() < dieTime ): 
    #print "000000000000" 
    QCoreApplication.processEvents(QEventLoop.AllEvents, 100) 
   
     
def waitMethod(self): 
  tt = QElapsedTimer() 
  tt.start() 
   
  q = QEventLoop() 
  t = QTimer() 
  t.setSingleShot(True) 
  self.connect(t, SIGNAL("timeout()"), q.quit) 
  t.start(1)  # 5s timeout 
  q.exec_() 
  if(t.isActive()): 
    t.stop() 
  else: 
    pass 
   
  print tt.elapsed() 

下面粘上源码,供参考,这个源码可以直接运行,内部的调试信息可以忽略:

#coding:utf-8 
''''' 
Created on 2015 7 15 
@author: guowu 
''' 
 
from PyQt4.QtGui import QWidget, QTextEdit, QPushButton, QGraphicsScene,\ 
  QGraphicsWidget, QGraphicsLinearLayout, QGraphicsView, QApplication,\ 
  QTransform, QHBoxLayout, QPainter, QLabel, QGraphicsLayoutItem, QFont,\ 
  QPixmap, QBrush 
from PyQt4.QtCore import Qt, QTime, QCoreApplication, QEventLoop, QObject,\ 
  SIGNAL, QPoint, QTimer, QBasicTimer, QElapsedTimer, QPointF 
import sys 
import time 
 
 
class TestGraphicWidget(QGraphicsWidget): 
  def __init__(self,parent=None): 
    super(TestGraphicWidget,self).__init__(parent) 
    self.setWindowFlags(Qt.Window) 
    self.setWindowTitle("Turn Widget") 
    self.resize(400,400) 
    #self.setPos(QPoint(0,0)) 
    self.mousePressed = False 
     
  def closeEvent(self,event): 
    print "closeclosetest" 
    self.emit(SIGNAL("startTurn")) 
   
  def mouseMoveEvent(self, event): 
    print "move move" 
    if self.mousePressed: 
      #self.move(self.pos() + event.pos() - self.currentPos) 
      self.setPos(self.pos() + event.pos() - self.currentPos) 
   
  def mousePressEvent(self, event): 
    if event.buttons() == Qt.LeftButton: 
      self.currentPos = event.pos() 
      self.mousePressed = True  
     
 
class TestMainWindow(QWidget): 
  def __init__(self,parent=None): 
    super(TestMainWindow,self).__init__(parent) 
    #self.setStyleSheet("background: transparent;border:0px;") 
    self.setAttribute(Qt.WA_TranslucentBackground,True) 
     
    self.firstButton = QPushButton(u"翻转") 
    self.secondButton = QPushButton(u"翻转") 
    self.thirdButton = QPushButton(u"翻转") 
     
    self.mainLayout = QHBoxLayout(self) 
    self.mainLayout.addWidget(self.firstButton) 
    self.mainLayout.addWidget(self.secondButton) 
    self.mainLayout.addWidget(self.thirdButton) 
     
    self.connect(self.firstButton, SIGNAL("clicked()"), self.startTurn) 
    self.connect(self.secondButton, SIGNAL("clicked()"), self.startTurn) 
    self.connect(self.thirdButton, SIGNAL("clicked()"), self.startTurn) 
   
  def startTurn(self): 
    self.emit(SIGNAL("buttonclicked")) 
     
  def closeEvent(self,event): 
    print "closeclosetest" 
    self.emit(SIGNAL("startTurn")) 
     
  def paintEvent(self,event): 
    #print "paintevent" 
    painter = QPainter(self) 
    painter.setRenderHint(QPainter.SmoothPixmapTransform, True)#像素光滑 
    painter.setRenderHint(QPainter.Antialiasing, True)#反锯齿 
    pix = QPixmap("cloud-bak.jpg").scaled(self.width(),self.height()) 
    painter.setBrush(QBrush(pix)) 
    painter.drawRoundRect(self.rect(),5,5) 
     
class TestMainWindowTwo(QWidget): 
  def __init__(self,parent=None): 
    super(TestMainWindowTwo,self).__init__(parent) 
    #self.setStyleSheet("QWidget{background: transparent;border:0px;}") 
    self.setAttribute(Qt.WA_TranslucentBackground,True) 
     
    self.firstButton = QPushButton(u"p翻转") 
    self.secondButton = QPushButton(u"p翻转") 
    self.thirdButton = QPushButton(u"p翻转") 
     
    self.mainLayout = QHBoxLayout(self) 
    self.mainLayout.addWidget(self.firstButton) 
    self.mainLayout.addWidget(self.secondButton) 
    self.mainLayout.addWidget(self.thirdButton) 
     
    self.connect(self.firstButton, SIGNAL("clicked()"), self.startTurn) 
    self.connect(self.secondButton, SIGNAL("clicked()"), self.startTurn) 
    self.connect(self.thirdButton, SIGNAL("clicked()"), self.startTurn) 
   
  def startTurn(self): 
    self.emit(SIGNAL("buttonclicked")) 
     
  def paintEvent(self,event): 
    #print "paintevent" 
    painter = QPainter(self) 
    painter.setRenderHint(QPainter.SmoothPixmapTransform, True)#像素光滑 
    painter.setRenderHint(QPainter.Antialiasing, True)#反锯齿 
    pix = QPixmap("login.jpg").scaled(self.width(),self.height()) 
    painter.setBrush(QBrush(pix)) 
    painter.drawRoundRect(self.rect(),5,5) 
   
class MainWindow(QWidget): 
  def __init__(self,parent=None): 
    super(MainWindow,self).__init__(parent) 
     
    #self.setStyleSheet("QGraphicsView{background:rgb(0,0,0,0);border:0px;}") 
     
     
    self.formflag = 0 
     
    self.scene = QGraphicsScene() 
     
    self.setWindowFlags(Qt.FramelessWindowHint|Qt.WindowStaysOnTopHint) 
    self.setAttribute(Qt.WA_TranslucentBackground,True) 
     
    #创建部件,并关联它们的信号和槽 
    self.oneWidget = TestMainWindow() 
    self.connect(self.oneWidget, SIGNAL("buttonclicked"),self.startTurn) 
     
    self.twoWidget = TestMainWindowTwo() 
    self.connect(self.twoWidget, SIGNAL("buttonclicked"),self.startTurn) 
     
 
    #self.textEdit = QGraphicsLayoutItem(self.edit) 
    self.oneTestWidget = self.scene.addWidget(self.oneWidget) 
    self.twoTestWidget = self.scene.addWidget(self.twoWidget) 
      
    self.form = TestGraphicWidget() 
    self.connect(self.form, SIGNAL("startTurn"),self.close) 
    #将部件添加到布局管理器中 
     
     
    self.layout = QGraphicsLinearLayout(self.form) 
    self.layout.setSpacing(0) 
    self.layout.addItem(self.oneTestWidget) 
    self.layout.addItem(self.twoTestWidget) 
     
     
    self.layout.removeItem(self.twoTestWidget) 
    self.twoWidget.hide() 
     
    #创建图形部件,设置其为一个顶层窗口,然后在其上应用布局 
    #self.form.setWindowFlags(Qt.Window|Qt.FramelessWindowHint) 
    #self.form.setWindowTitle("Widget Item") 
    #self.form.setLayout(layout) 
      
    self.scene.addItem(self.form) 
     
    #self.form.setPos(QPointF(0,0)) 
     
    #self.form.hide() 
     
    self.view = QGraphicsView(self.scene,self) 
    #self.view.setScene(self.scene) 
    self.view.setRenderHint(QPainter.Antialiasing) 
    self.view.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate) 
    self.view.resize(QApplication.desktop().width(),QApplication.desktop().height()) 
    self.view.setStyleSheet("background: transparent;border:0px;") 
    self.view.setWindowFlags(Qt.FramelessWindowHint)       
    self.view.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) 
    self.view.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) 
    self.view.move(QPoint(0,0)) 
    #self.view.setAttribute(Qt.WA_TranslucentBackground,True) 
     
    #self.form.resize(500,500) 
    #self.form.setWindowFlags(Qt.FramelessWindowHint) 
    #for(int i=1;i<=360;i++) 
   
  def setOne(self): 
     
    self.twoWidget.hide() 
    self.oneWidget.show() 
    self.layout.removeItem(self.twoTestWidget) 
    self.layout.addItem(self.oneTestWidget) 
     
    self.view.update() 
   
  def setTwo(self): 
     
    self.oneWidget.hide() 
    self.twoWidget.show() 
    self.layout.removeItem(self.oneTestWidget) 
    self.layout.addItem(self.twoTestWidget) 
     
    self.view.update() 
     
  def transeformT(self,count): 
     
    r = self.form.boundingRect() 
    for i in range(1,count): 
      print "............." 
      self.form.setTransform(QTransform() 
                  .translate(r.width() / 2, r.height() / 2) 
                  .rotate(364.00/count*i - 360 * 1, Qt.YAxis) 
                  .translate(-r.width() / 2, -r.height() / 2)) 
      self.waitMethod() 
      #self.sleep(1) 
      #time.sleep(1) 
      self.view.update() 
#      
     
  def transeformS(self,count): 
    r = self.form.boundingRect() 
    for i in range(1,count): 
      print "............." 
      self.form.setTransform(QTransform() 
                  .translate(r.width() / 2, r.height() / 2) 
                  .rotate(182.00/count*i - 360 * 1, Qt.YAxis) 
                  .translate(-r.width() / 2, -r.height() / 2)) 
      self.waitMethod() 
      self.view.update() 
       
  def transeformR(self,count): 
    r = self.form.boundingRect() 
    for i in range(1,count): 
      print "............." 
      self.form.setTransform(QTransform() 
                  .translate(r.width() / 2, r.height() / 2) 
                  .rotate(91.00/count*i - 360 * 1, Qt.YAxis) 
                  .translate(-r.width() / 2, -r.height() / 2)) 
      self.waitMethod() 
      self.view.update() 
     
    self.form.setTransform(QTransform() 
                  .translate(r.width() / 2, r.height() / 2) 
                  .rotate(270 - 360 * 1, Qt.YAxis) 
                  .translate(-r.width() / 2, -r.height() / 2)) 
    self.view.update() 
    if self.formflag %2 == 0: 
      self.setOne() 
    else: 
      self.setTwo() 
     
    for i in range(1,count): 
      self.form.setTransform(QTransform() 
                    .translate(r.width() / 2, r.height() / 2) 
                    .rotate(270 + 93.00/count*i - 360 * 1, Qt.YAxis) 
                    .translate(-r.width() / 2, -r.height() / 2)) 
      self.waitMethod() 
      self.view.update() 
          
   
  def transeformB(self,count): 
    r = self.form.boundingRect() 
    for i in range(1,count): 
      print "............." 
      self.form.setTransform(QTransform() 
                  .translate(r.width(), r.height()) 
                  .rotate(91.00/count*i - 360 * 1, Qt.YAxis) 
                  .translate(-r.width(), -r.height())) 
      self.waitMethod() 
      self.view.update() 
     
    self.form.setTransform(QTransform() 
                  .translate(r.width(), r.height()) 
                  .rotate(270 - 360 * 1, Qt.YAxis) 
                  .translate(-r.width(), -r.height())) 
    self.view.update() 
     
     
    for i in range(1,count): 
      self.form.setTransform(QTransform() 
                    .translate(r.width(), r.height()) 
                    .rotate(270 + 93.00/count*i - 360 * 1, Qt.YAxis) 
                    .translate(-r.width(), -r.height())) 
      self.waitMethod() 
      self.view.update() 
       
  def transeform(self): 
    print self.form.pos() 
    #self.scene.itemAt(QPointF) 
    rxx = self.scene.itemsBoundingRect() 
    rx = self.form.boundingRect() 
    r = self.form.geometry() 
    print r,rx,rxx 
    for i in range(1,361): 
      print self.form.pos() 
      print "............." 
      #print r.width(),r.height() 
      transform = QTransform() 
      transform.translate(r.width() / 2, r.height()/2)#中心点,原点 
      transform.rotate(i - 360 * 1, Qt.YAxis)#绕X轴旋转角度 
      self.form.setTransform(transform) 
       
#       self.form.setTransform(QTransform() 
#                  .translate(r.width() / 2, r.height() / 2) 
#                  .rotate(i - 360 * 1, Qt.YAxis) 
#                  .translate(-r.width() / 2, -r.height() / 2)) 
#       self.form.setTransform(QTransform() 
#                  .translate(250, 250) 
#                  .rotate(i - 360 * 1, Qt.YAxis) 
#                  .translate(-250, -250)) 
      self.waitMethod() 
      self.view.update() 
#        
  def startTurn(self): 
    self.formflag += 1 
    self.transeformR(30) 
    #self.transeform() 
    #self.form.close() 
    #self.view.close() 
  def closeEvent(self,event): 
    print "close" 
    self.form.close() 
    self.view.close() 
    self.close() 
     
  def sleep(self,msec): 
     
    dieTime = QTime.currentTime().addMSecs(msec) 
     
    print dieTime,QTime.currentTime() 
    #a = 0 
    while( QTime.currentTime() < dieTime ): 
      #print "000000000000" 
      QCoreApplication.processEvents(QEventLoop.AllEvents, 100)     
   
  def waitMethod(self): 
    tt = QElapsedTimer() 
    tt.start() 
     
    q = QEventLoop() 
    t = QTimer() 
    t.setSingleShot(True) 
    self.connect(t, SIGNAL("timeout()"), q.quit) 
    t.start(1)  # 5s timeout 
    q.exec_() 
    if(t.isActive()): 
      t.stop() 
    else: 
      pass 
     
    print tt.elapsed() 
 
if __name__ == "__main__": 
  app = QApplication(sys.argv) 
   
  font = QFont() 
  font.setPointSize(16) 
  font.setFamily(("Roman Times")) 
  app.setFont(font) 
   
  c = MainWindow() 
  c.show() 
  c.move(QPoint(0,0)) 
  app.exec_() 

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持【听图阁-专注于Python设计】。

相关文章

python绘制直线的方法

python绘制直线的方法

本文实例为大家分享了python绘制直线的具体代码,供大家参考,具体内容如下 #!/usr/bin/env python import vtk # 绘制通用方法 def m...

24式加速你的Python(小结)

24式加速你的Python(小结)

一,分析代码运行时间 第1式,测算代码运行时间 平凡方法 快捷方法(jupyter环境) 第2式,测算代码多次运行平均时间 平凡方法 快捷方法(jupyter环境) 第3式,按调...

对python制作自己的数据集实例讲解

对python制作自己的数据集实例讲解

一、数据集介绍 点击打开链接17_Category_Flower 是一个不同种类鲜花的图像数据,包含 17 不同种类的鲜花,每类 80 张该类鲜花的图片,鲜花种类是英国地区常见鲜花。下载...

Flask框架请求钩子与request请求对象用法实例分析

Flask框架请求钩子与request请求对象用法实例分析

本文实例讲述了Flask框架请求钩子与request请求对象。分享给大家供大家参考,具体如下: 请求钩子 在客户端和服务器交互的过程中,有些准备工作或扫尾工作需要处理,比如: 在请...

Python OS模块常用函数说明

Python的标准库中的os模块包含普遍的操作系统功能。如果你希望你的程序能够与平台无关的话,这个模块是尤为重要的。即它允许一个程序在编写后不需要任何改动,也不会发生任何问题,就可以在L...