good pyQt5 web
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http://blog.csdn.net/xiaoyangyang20
python3+PyQt5 树中表达表格数据
#!/usr/bin/env python3import bisectimport codecsfrom PyQt5.QtCore import (QAbstractItemModel, QModelIndex,QVariant, Qt)KEY, NODE = range(2)class BranchNode(object): def __init__(self, name, parent=None): super(BranchNode, self).__init__() self.name = name self.parent = parent self.children = [] def __lt__(self, other): if isinstance(other, BranchNode): return self.orderKey() < other.orderKey() return False def orderKey(self): return self.name.lower() def toString(self): return self.name def __len__(self): return len(self.children) def childAtRow(self, row): assert 0 <= row < len(self.children) return self.children[row][NODE] def rowOfChild(self, child): for i, item in enumerate(self.children): if item[NODE] == child: return i return -1 def childWithKey(self, key): if not self.children: return None # Causes a -3 deprecation warning. Solution will be to # reimplement bisect_left and provide a key function. i = bisect.bisect_left(self.children, (key, None)) if i < 0 or i >= len(self.children): return None if self.children[i][KEY] == key: return self.children[i][NODE] return None def insertChild(self, child): child.parent = self bisect.insort(self.children, (child.orderKey(), child)) def hasLeaves(self): if not self.children: return False return isinstance(self.children[0], LeafNode)class LeafNode(object): def __init__(self, fields, parent=None): super(LeafNode, self).__init__() self.parent = parent self.fields = fields def orderKey(self): return "\t".join(self.fields).lower() def toString(self, separator="\t"): return separator.join(self.fields) def __len__(self): return len(self.fields) def asRecord(self): record = [] branch = self.parent while branch is not None: record.insert(0, branch.toString()) branch = branch.parent assert record and not record[0] record = record[1:] return record + self.fields def field(self, column): assert 0 <= column <= len(self.fields) return self.fields[column]class TreeOfTableModel(QAbstractItemModel): def __init__(self, parent=None): super(TreeOfTableModel, self).__init__(parent) self.columns = 0 self.root = BranchNode("") self.headers = [] def load(self, filename, nesting, separator): self.beginResetModel() assert nesting > 0 self.nesting = nesting self.root = BranchNode("") exception = None fh = None try: for line in codecs.open(str(filename), "rU", "utf8"): if not line: continue self.addRecord(line.split(separator), False) except IOError as e: exception = e finally: if fh is not None: fh.close() #self.reset() self.endResetModel() for i in range(self.columns): self.headers.append("Column #{0}".format(i)) if exception is not None: raise exception def addRecord(self, fields, callReset=True): assert len(fields) > self.nesting root = self.root branch = None for i in range(self.nesting): key = fields[i].lower() branch = root.childWithKey(key) if branch is not None: root = branch else: branch = BranchNode(fields[i]) root.insertChild(branch) root = branch assert branch is not None items = fields[self.nesting:] self.columns = max(self.columns, len(items)) branch.insertChild(LeafNode(items, branch)) if callReset: self.beginResetModel() self.endResetModel() def asRecord(self, index): leaf = self.nodeFromIndex(index) if leaf is not None and isinstance(leaf, LeafNode): return leaf.asRecord() return [] def rowCount(self, parent): node = self.nodeFromIndex(parent) if node is None or isinstance(node, LeafNode): return 0 return len(node) def columnCount(self, parent): return self.columns def data(self, index, role): if role == Qt.TextAlignmentRole: return QVariant(int(Qt.AlignTop|Qt.AlignLeft)) if role != Qt.DisplayRole: return QVariant() node = self.nodeFromIndex(index) assert node is not None if isinstance(node, BranchNode): return node.toString() if index.column() == 0 else "" return node.field(index.column()) def headerData(self, section, orientation, role): if (orientation == Qt.Horizontal and role == Qt.DisplayRole): assert 0 <= section <= len(self.headers) return self.headers[section] return QVariant() def index(self, row, column, parent): assert self.root branch = self.nodeFromIndex(parent) assert branch is not None return self.createIndex(row, column, branch.childAtRow(row)) def parent(self, child): node = self.nodeFromIndex(child) if node is None: return QModelIndex() parent = node.parent if parent is None: return QModelIndex() grandparent = parent.parent if grandparent is None: return QModelIndex() row = grandparent.rowOfChild(parent) assert row != -1 return self.createIndex(row, 0, parent) def nodeFromIndex(self, index): return (index.internalPointer() if index.isValid() else self.root)
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/home/yrd/eric_workspace/chap16/serverinfo.pyw
#!/usr/bin/env python3import osimport sysfrom PyQt5.QtCore import (QModelIndex, QVariant, Qt,pyqtSignal)from PyQt5.QtWidgets import (QApplication, QMainWindow,QMessageBox, QShortcut, QTreeView)from PyQt5.QtGui import QKeySequence,QPixmapimport treeoftableclass ServerModel(treeoftable.TreeOfTableModel): def __init__(self, parent=None): super(ServerModel, self).__init__(parent) def data(self, index, role): if role == Qt.DecorationRole: node = self.nodeFromIndex(index) if node is None: return QVariant() if isinstance(node, treeoftable.BranchNode): if index.column() != 0: return QVariant() filename = node.toString().replace(" ", "_") parent = node.parent.toString() if parent and parent != "USA": return QVariant() if parent == "USA": filename = "USA_" + filename filename = os.path.join(os.path.dirname(__file__), "flags", filename + ".png") pixmap = QPixmap(filename) if pixmap.isNull(): return QVariant() return QVariant(pixmap) return treeoftable.TreeOfTableModel.data(self, index, role)class TreeOfTableWidget(QTreeView): activated_signal=pyqtSignal(list) def __init__(self, filename, nesting, separator, parent=None): super(TreeOfTableWidget, self).__init__(parent) self.setSelectionBehavior(QTreeView.SelectItems) self.setUniformRowHeights(True) model = ServerModel(self) self.setModel(model) try: model.load(filename, nesting, separator) except IOError as e: QMessageBox.warning(self, "Server Info - Error", str(e)) self.activated[QModelIndex].connect(self.activate) self.expanded.connect(self.expand) self.expand() def currentFields(self): return self.model().asRecord(self.currentIndex()) def activate(self, index): self.activated_signal.emit(self.model().asRecord(index)) def expand(self): for column in range(self.model().columnCount( QModelIndex())): self.resizeColumnToContents(column)class MainForm(QMainWindow): def __init__(self, filename, nesting, separator, parent=None): super(MainForm, self).__init__(parent) headers = ["Country/State (US)/City/Provider", "Server", "IP"] if nesting != 3: if nesting == 1: headers = ["Country/State (US)", "City", "Provider", "Server"] elif nesting == 2: headers = ["Country/State (US)/City", "Provider", "Server"] elif nesting == 4: headers = ["Country/State (US)/City/Provider/Server"] headers.append("IP") self.treeWidget = TreeOfTableWidget(filename, nesting, separator) self.treeWidget.model().headers = headers self.setCentralWidget(self.treeWidget) QShortcut(QKeySequence("Escape"), self, self.close) QShortcut(QKeySequence("Ctrl+Q"), self, self.close) self.treeWidget.activated_signal[list].connect(self.activated) self.setWindowTitle("Server Info") self.statusBar().showMessage("Ready...", 5000) def picked(self): return self.treeWidget.currentFields() def activated(self, fields): self.statusBar().showMessage("*".join(fields), 60000)app = QApplication(sys.argv)nesting = 3if len(sys.argv) > 1: try: nesting = int(sys.argv[1]) except: pass if nesting not in (1, 2, 3, 4): nesting = 3form = MainForm(os.path.join(os.path.dirname(__file__), "servers.txt"), nesting, "*")form.resize(750, 550)form.show()app.exec_()print("*".join(form.picked()))
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