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htmldelegate.py
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# htmldelegate.py - HTML QStyledItemDelegate # # 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. from mercurial import error from tortoisehg.util import hglib from tortoisehg.hgqt.i18n import _ from tortoisehg.hgqt import qtlib from PyQt4.QtCore import * from PyQt4.QtGui import * class HTMLDelegate(QStyledItemDelegate): def __init__(self, parent=0, cols=None): QStyledItemDelegate.__init__(self, parent) self.cols = cols def paint(self, painter, option, index): if self.cols and index.column() not in self.cols: return QStyledItemDelegate.paint(self, painter, option, index) # draw selection option = QStyleOptionViewItemV4(option) self.parent().style().drawControl(QStyle.CE_ItemViewItem, option, painter) # draw text doc = self._builddoc(option, index) painter.save() painter.setClipRect(option.rect) painter.translate(QPointF( option.rect.left(), option.rect.top() + (option.rect.height() - doc.size().height()) / 2)) ctx = QAbstractTextDocumentLayout.PaintContext() ctx.palette = option.palette if option.state & QStyle.State_Selected: if option.state & QStyle.State_Active: ctx.palette.setCurrentColorGroup(QPalette.Active) else: ctx.palette.setCurrentColorGroup(QPalette.Inactive) ctx.palette.setBrush(QPalette.Text, ctx.palette.highlightedText()) elif not option.state & QStyle.State_Enabled: ctx.palette.setCurrentColorGroup(QPalette.Disabled) doc.documentLayout().draw(painter, ctx) painter.restore() def sizeHint(self, option, index): doc = self._builddoc(option, index) return QSize(doc.idealWidth() + 5, doc.size().height()) def _builddoc(self, option, index): try: text = index.model().data(index, Qt.DisplayRole).toString() except error.RevlogError, e: # this can happen if revlog is being truncated while we read it text = _('?? Error: %s ??') % hglib.tounicode(str(e)) doc = QTextDocument(defaultFont=option.font) doc.setHtml(text) return doc