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htmllistview.py
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# htmllistview.py - QListView based widget for selectable read-only HTML # # Copyright 2010 Steve Borho <steve@borho.org> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. import sys from PyQt4.QtCore import * from PyQt4.QtGui import * class HtmlModel(QAbstractListModel): def __init__(self, strings): QAbstractTableModel.__init__(self) self.strings = strings def rowCount(self, parent): if not parent.isValid(): return len(self.strings) return 0 def data(self, index, role): if not index.isValid() or role != Qt.DisplayRole: return QVariant() if index.row() < 0 or index.row() >= len(self.strings): return QVariant() return QVariant(self.strings[index.row()]) def headerData(self, col, orientation, role): if col != 0 or role != Qt.DisplayRole or orientation != Qt.Horizontal: return QVariant() else: return QVariant("Multiline Rich-Text List") def flags(self, index): return Qt.ItemIsSelectable | Qt.ItemIsEnabled class HtmlListView(QListView): def __init__(self, model): QListView.__init__(self) self.setWindowTitle('HtmlListView') self.setModel(model) self.setSelectionBehavior(QAbstractItemView.SelectItems) self.setSelectionMode(QAbstractItemView.ExtendedSelection) self.resize(600, 200) self.setItemDelegate(HTMLDelegate(self)) self._supportsSelection = QApplication.clipboard().supportsSelection() def selectionChanged(self, selected, deselected): QListView.selectionChanged(self, selected, deselected) self.copySelection( QClipboard.Selection ) def keyPressEvent(self, event): if event.matches(QKeySequence.Cut) or event.matches(QKeySequence.Copy): self.copySelection(QClipboard.Clipboard) else: QListView.keyPressEvent(self, event) def copySelection(self, mode): if mode == QClipboard.Selection and not self._supportsSelection: return maxCol = 0 sel = [] for index in self.selectionModel().selectedIndexes(): if maxCol < index.column(): maxCol = index.column() sel.append((index.row(), index.column(), index)) sel.sort() selectionText = '' for item in sel: data = self.model().data(item[2], Qt.DisplayRole).toString() data.replace('\n', '\\n') selectionText += data if item[1] == maxCol: selectionText += '\n' else: selectionText += '\t' QApplication.clipboard().setText(selectionText, mode) class HTMLDelegate(QStyledItemDelegate): def __init__(self, parent=0): QItemDelegate.__init__(self, parent) def paint(self, painter, option, index): text = index.model().data(index, Qt.DisplayRole).toString() palette = QApplication.palette() doc = QTextDocument() doc.setDefaultFont(option.font) painter.save() if option.state & QStyle.State_Selected: doc.setHtml('<font color=%s>%s</font>' % ( palette.highlightedText().color().name(), text)) bgcolor = palette.highlight().color() painter.fillRect(option.rect, bgcolor) else: doc.setHtml(text) painter.translate(option.rect.left(), option.rect.top()) doc.drawContents(painter) painter.restore() def sizeHint(self, option, index): fm = option.fontMetrics text = index.model().data(index, Qt.DisplayRole).toString() doc = QTextDocument() doc.setDefaultFont(option.font) doc.setHtml(text) doc.setTextWidth(option.rect.width()) return QSize(doc.idealWidth() + 5, doc.size().height()) if __name__ == "__main__": items = [ 'item0', '<pre style="color: green">just this text from this item</pre>', 'what does a multi<br>line cell look like?', 'what <b>does</b> a multi<br>line cell<br>look<br>like?', 'item2' ] app = QApplication(sys.argv) tm = HtmlModel(items) tv1 = HtmlListView( tm ) tv1.show() app.connect(app, SIGNAL('lastWindowClosed()'), app, SLOT('quit()')) sys.exit(app.exec_())