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PyQt實(shí)現(xiàn)界面翻轉(zhuǎn)切換效果

 更新時(shí)間:2018年04月20日 11:09:46   作者:酒醉東坡  
這篇文章主要為大家詳細(xì)介紹了PyQt實(shí)現(xiàn)界面翻轉(zhuǎn)切換效果,具有一定的參考價(jià)值,感興趣的小伙伴們可以參考一下

PyQt實(shí)現(xiàn)界面翻轉(zhuǎn)切換效果是用qt的場(chǎng)景功能來(lái)實(shí)現(xiàn)的,用到了QGraphicsView,QGraphicsLinearLayout,QGraphicsWidget等有關(guān)qt場(chǎng)景的庫(kù)。算是對(duì)qt場(chǎng)景的一個(gè)小小的嘗試,涉及內(nèi)容不深,程序效果并是隨心所欲,需要去進(jìn)一步的改善和提高。暫且先把代碼貼在此處,供大家學(xué)習(xí)和指正。

工程包括四個(gè)類(lèi):

界面A,TestMainWindow,用來(lái)充當(dāng)翻轉(zhuǎn)效果的A面。
界面B,TestMainWindowTwo,用來(lái)充當(dāng)翻轉(zhuǎn)效果的B面。
繪圖界面:TestGraphicWidget,用來(lái)繪制界面A和B。
主界面:MainWindow,是一個(gè)全屏的透明窗口,是整個(gè)效果展現(xiàn)的總舞臺(tái),內(nèi)部包含一個(gè)QGraphicsScene和一個(gè)QGraphicsView,用來(lái)展示效果中的界面翻轉(zhuǎn)和界面替換。

整個(gè)效果的原理總結(jié)為幾點(diǎn):

首先,將整個(gè)效果需要的所有界面添加到TestGraphicWidget中,在將TestGraphicWidget放入到QGraphicsScene中,然后經(jīng)QGraphicsScene添加到主界面中。
然后,界面切換實(shí)現(xiàn),兩個(gè)函數(shù),非常簡(jiǎn)單,要顯示A,就把B移除并隱藏,要顯示B,則把A移除并隱藏。

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,翻轉(zhuǎn)效果的實(shí)現(xiàn),用的是TestGraphicWidget特有的翻轉(zhuǎn)方法,參數(shù)可以根據(jù)實(shí)景情況調(diào)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() 

而且提供了兩種讓程序等待但界面不會(huì)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() 

下面粘上源碼,供參考,這個(gè)源碼可以直接運(yùn)行,內(nèi)部的調(diào)試信息可以忽略:

#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"翻轉(zhuǎn)") 
    self.secondButton = QPushButton(u"翻轉(zhuǎn)") 
    self.thirdButton = QPushButton(u"翻轉(zhuǎn)") 
     
    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)#反鋸齒 
    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翻轉(zhuǎn)") 
    self.secondButton = QPushButton(u"p翻轉(zhuǎn)") 
    self.thirdButton = QPushButton(u"p翻轉(zhuǎn)") 
     
    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)#反鋸齒 
    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) 
     
    #創(chuàng)建部件,并關(guān)聯(lián)它們的信號(hào)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) 
    #將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() 
     
    #創(chuàng)建圖形部件,設(shè)置其為一個(gè)頂層窗口,然后在其上應(yīng)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)#中心點(diǎn),原點(diǎn) 
      transform.rotate(i - 360 * 1, Qt.YAxis)#繞X軸旋轉(zhuǎn)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?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。

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