class BarraLista(QGraphicsView):
usuarioSelecionado = pyqtSignal(Usuario)
def __init__(self, servico, parent=None):
super().__init__(parent)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setTransformationAnchor(QGraphicsView.AnchorViewCenter)
self.setViewportUpdateMode(QGraphicsView.FullViewportUpdate)
self.viewport().setAutoFillBackground(False)
self.setFrameShape(QFrame.NoFrame)
self.setMinimumWidth(150)
self._scene = ListaScene(self)
self.setScene(self._scene)
self._servico = servico
self._servico.dadosUsuarioAtualizado.connect(self._atualizarDadosUsuario)
self._scene.doubleClickItem.connect(self._emitirUsuarioSelecionado)
def _emitirUsuarioSelecionado(self, item):
self.usuarioSelecionado.emit(item.getUsuario())
for i in range(self._scene.quantItens()):
sceneItem = self._scene.getItem(i)
sceneItem.selected = (sceneItem == item)
def _atualizarDadosUsuario(self, usuario):
us = self.getItemUsuario(usuario)
if not us:
self.addUsuario(usuario)
else:
us.setUsuario(usuario)
def addUsuario(self, usuario):
item = ItemUsuario(usuario)
self.sceneRectChanged.connect(item.resize)
item.resize(self.sceneRect())
self._scene.addItem(item)
def atualizarNumConversasNaoVisualizadas(self, usuario, num):
self.getItemUsuario(usuario).setNumConversasNaoVisualizadas(num)
def getItemUsuario(self, usuario):
for i in range(self._scene.quantItens()):
if self._scene.getItem(i).getUsuario().getIP() == usuario.getIP():
return self._scene.getItem(i)
return None
def resizeEvent(self, resize):
size = resize.size()
self._scene.setSceneRect(0, 0, size.width(), size.height())
def __getattr__(self, attr):
return self._scene.__getattribute__(attr)
#-*- coding: utf-8 -*- from PyQt4.QtGui import QApplication, QGraphicsView from PyQt4.QtCore import QTimer, QRectF from widgets.lista import ListaScene from widgets.itens import ItemMovel app = QApplication([]) w = QGraphicsView() a = ListaScene(w) a.setSceneRect(0,0,300,300) i = ItemMovel() a.addItem(i) i2 = ItemMovel() a.addItem(i2) QTimer.singleShot(2000, lambda: (i.setTamanho(QRectF(0,0,10,10)), i2.setTamanho(QRectF(0,0,40,20)))) QTimer.singleShot(4000, lambda: i.setTamanho(QRectF(0,0,60,50))) q = ItemMovel() QTimer.singleShot(6000, lambda: (a.addItem(q), q.setTamanho(QRectF(0,0,60,60)))) QTimer.singleShot(8000, lambda: (q.setTamanho(QRectF(0,0,30,20)), i.setTamanho(QRectF(0,0,10,50)), i2.setTamanho(QRectF(0,0,30,10)))) a.addItem(ItemMovel()) w.setScene(a) w.show()