Python QTextCursor.block方法代码示例

# 需要导入模块: from PyQt5.Qt import QTextCursor [as 别名]
# 或者: from PyQt5.Qt.QTextCursor import block [as 别名]
    def find_text(self, pat, cursor):
        from calibre.gui2.tweak_book.text_search import find_text_in_chunks
        chunks = []

        cstart = min(cursor.position(), cursor.anchor())
        cend = max(cursor.position(), cursor.anchor())
        c = QTextCursor(cursor)
        c.setPosition(cstart)
        block = c.block()
        in_text = find_tag_definition(block, 0)[0] is None
        if in_text:
            # Check if we are in comment/PI/etc.
            pb = block.previous()
            while pb.isValid():
                boundaries = pb.userData().non_tag_structures
                if boundaries:
                    if boundaries[-1].is_start:
                        in_text = False
                    break
                pb = pb.previous()

        def append(text, start):
            text = text.replace(PARAGRAPH_SEPARATOR, '\n')
            after = start + len(text)
            if start <= cend and cstart < after:
                extra = after - (cend + 1)
                if extra > 0:
                    text = text[:-extra]
                extra = cstart - start
                if extra > 0:
                    text = text[extra:]
                chunks.append((text, start + max(extra, 0)))

        while block.isValid() and block.position() <= cend:
            ud = block.userData()
            boundaries = sorted(chain(ud.tags, ud.non_tag_structures), key=get_offset)
            if not boundaries:
                # Add the whole line
                if in_text:
                    text = block.text() + '\n'
                    append(text, block.position())
            else:
                start = block.position()
                c.setPosition(start)
                for b in boundaries:
                    if in_text:
                        c.setPosition(start + b.offset, c.KeepAnchor)
                        if c.hasSelection():
                            append(c.selectedText(), c.anchor())
                    in_text = not b.is_start
                    c.setPosition(start + b.offset + 1)
                if in_text:
                    # Add remaining text in block
                    c.setPosition(block.position() + boundaries[-1].offset + 1)
                    c.movePosition(c.EndOfBlock, c.KeepAnchor)
                    if c.hasSelection():
                        append(c.selectedText() + '\n', c.anchor())
            block = block.next()
        s, e = find_text_in_chunks(pat, chunks)
        return s != -1 and e != -1, s, e

# 需要导入模块: from PyQt5.Qt import QTextCursor [as 别名]
# 或者: from PyQt5.Qt.QTextCursor import block [as 别名]
    def find_text(self, pat, cursor):
        from calibre.gui2.tweak_book.text_search import find_text_in_chunks
        chunks = []

        cstart = min(cursor.position(), cursor.anchor())
        cend = max(cursor.position(), cursor.anchor())
        c = QTextCursor(cursor)
        c.setPosition(cstart)
        block = c.block()
        in_text = find_tag_definition(block, 0)[0] is None

        def append(text, start):
            after = start + len(text)
            if start <= cend and cstart < after:
                extra = after - (cend + 1)
                if extra > 0:
                    text = text[:-extra]
                extra = cstart - start
                if extra > 0:
                    text = text[extra:]
                chunks.append((text, start + max(extra, 0)))

        while block.isValid() and block.position() <= cend:
            boundaries = sorted(block.userData().tags, key=get_offset)
            if not boundaries:
                # Add the whole line
                if in_text:
                    text = block.text()
                    if text:
                        append(text, block.position())
            else:
                start = block.position()
                c.setPosition(start)
                for b in boundaries:
                    if in_text:
                        c.setPosition(start + b.offset, c.KeepAnchor)
                        if c.hasSelection():
                            append(c.selectedText(), c.anchor())
                    in_text = not b.is_start
                    c.setPosition(start + b.offset + 1)
                if in_text:
                    # Add remaining text in block
                    c.setPosition(block.position() + boundaries[-1].offset + 1)
                    c.movePosition(c.EndOfBlock, c.KeepAnchor)
                    if c.hasSelection():
                        append(c.selectedText(), c.anchor())
            block = block.next()
        s, e = find_text_in_chunks(pat, chunks)
        return s != -1 and e != -1, s, e

# 需要导入模块: from PyQt5.Qt import QTextCursor [as 别名]
# 或者: from PyQt5.Qt.QTextCursor import block [as 别名]
    def show_context_menu(self, pos):
        m = QMenu(self)
        a = m.addAction
        c = self.editor.cursorForPosition(pos)
        origc = QTextCursor(c)
        current_cursor = self.editor.textCursor()
        r = origr = self.editor.syntax_range_for_cursor(c)
        if (r is None or not r.format.property(SPELL_PROPERTY)) and c.positionInBlock() > 0 and not current_cursor.hasSelection():
            c.setPosition(c.position() - 1)
            r = self.editor.syntax_range_for_cursor(c)

        if r is not None and r.format.property(SPELL_PROPERTY):
            word = self.editor.text_for_range(c.block(), r)
            locale = self.editor.spellcheck_locale_for_cursor(c)
            orig_pos = c.position()
            c.setPosition(orig_pos - utf16_length(word))
            found = False
            self.editor.setTextCursor(c)
            if self.editor.find_spell_word([word], locale.langcode, center_on_cursor=False):
                found = True
                fc = self.editor.textCursor()
                if fc.position() < c.position():
                    self.editor.find_spell_word([word], locale.langcode, center_on_cursor=False)
            spell_cursor = self.editor.textCursor()
            if current_cursor.hasSelection():
                # Restore the current cursor so that any selection is preserved
                # for the change case actions
                self.editor.setTextCursor(current_cursor)
            if found:
                suggestions = dictionaries.suggestions(word, locale)[:7]
                if suggestions:
                    for suggestion in suggestions:
                        ac = m.addAction(suggestion, partial(self.editor.simple_replace, suggestion, cursor=spell_cursor))
                        f = ac.font()
                        f.setBold(True), ac.setFont(f)
                    m.addSeparator()
                m.addAction(actions['spell-next'])
                m.addAction(_('Ignore this word'), partial(self._nuke_word, None, word, locale))
                dics = dictionaries.active_user_dictionaries
                if len(dics) > 0:
                    if len(dics) == 1:
                        m.addAction(_('Add this word to the dictionary: {0}').format(dics[0].name), partial(
                            self._nuke_word, dics[0].name, word, locale))
                    else:
                        ac = m.addAction(_('Add this word to the dictionary'))
                        dmenu = QMenu(m)
                        ac.setMenu(dmenu)
                        for dic in dics:
                            dmenu.addAction(dic.name, partial(self._nuke_word, dic.name, word, locale))
                m.addSeparator()

        if origr is not None and origr.format.property(LINK_PROPERTY):
            href = self.editor.text_for_range(origc.block(), origr)
            m.addAction(_('Open %s') % href, partial(self.link_clicked.emit, href))

        if origr is not None and (origr.format.property(TAG_NAME_PROPERTY) or origr.format.property(CSS_PROPERTY)):
            word = self.editor.text_for_range(origc.block(), origr)
            item_type = 'tag_name' if origr.format.property(TAG_NAME_PROPERTY) else 'css_property'
            url = help_url(word, item_type, self.editor.highlighter.doc_name, extra_data=current_container().opf_version)
            if url is not None:
                m.addAction(_('Show help for: %s') % word, partial(open_url, url))

        for x in ('undo', 'redo'):
            ac = actions['editor-%s' % x]
            if ac.isEnabled():
                a(ac)
        m.addSeparator()
        for x in ('cut', 'copy', 'paste'):
            ac = actions['editor-' + x]
            if ac.isEnabled():
                a(ac)
        m.addSeparator()
        m.addAction(_('&Select all'), self.editor.select_all)
        if self.selected_text or self.has_marked_text:
            update_mark_text_action(self)
            m.addAction(actions['mark-selected-text'])
        if self.syntax != 'css' and actions['editor-cut'].isEnabled():
            cm = QMenu(_('Change &case'), m)
            for ac in 'upper lower swap title capitalize'.split():
                cm.addAction(actions['transform-case-' + ac])
            m.addMenu(cm)
        if self.syntax == 'html':
            m.addAction(actions['multisplit'])
        m.exec_(self.editor.viewport().mapToGlobal(pos))

# 需要导入模块: from PyQt5.Qt import QTextCursor [as 别名]
# 或者: from PyQt5.Qt.QTextCursor import block [as 别名]
class DocumentFactory:
    
    def __init__(self, contentPath, formatManager):
        self.formatManager = formatManager
        self.contentPath = contentPath


    def createDocument(self, rootFrame):

        # Create empty document
        self.document = QTextDocument()
        self.document.setUndoRedoEnabled(False)
        self.document.setIndentWidth(20)

        # Register a renderer for custom text objects
        mo = CustomObjectRenderer()
        mo.setParent(self.document)
        self.document.documentLayout().registerHandler(QTextCharFormat.UserObject+1, mo);

        self.cursor = QTextCursor(self.document)
        self.listLevel = 0
        self.paraFormat = None

        # add all root paragraphs
        for n in rootFrame.children:
            self.addNode(n)

        # Clean up the first paragraph if document is not empty
        self.cursor.movePosition(QTextCursor.Start)
        b = self.cursor.block()
        if b.length() == 1:
            cursor = QTextCursor(self.document.findBlockByLineNumber(0))
            cursor.select(QTextCursor.BlockUnderCursor)
            cursor.deleteChar()

        return self.document


    def addNode(self, node):
        if type(node) == Paragraph:
            self.paraFormat = self.formatManager.getFormat(node.style)

            # NOTE: "The block char format is the format used when inserting 
            #        text at the beginning of an empty block."
            #       See also below.
            self.cursor.insertBlock(self.paraFormat.getBlockFormat(), self.paraFormat.getCharFormat())
            # self.cursor.insertFragment(QTextDocumentFragment.fromPlainText(''))

            if self.listLevel > 0:
                # TODO: use list style from list node - requires a stack, though ...
                listStyle = ('itemizedlist', 'level', str(self.listLevel))
                newList = self.cursor.createList(self.formatManager.getFormat(listStyle).getListFormat())
            for n in node.children:
                self.addNode(n)

        elif type(node) == List:
            self.listLevel += 1
            for n in node.children:
                self.addNode(n)
            self.listLevel -= 1

        elif type(node) is ImageFragment:
            imageObject = ImageObject()
            imagePath = os.path.join(self.contentPath, node.image)
            imageObject.setName(imagePath)

            imageObjectFormat = QTextCharFormat()
            imageObjectFormat.setObjectType(QTextFormat.UserObject + 1)
            imageObjectFormat.setProperty(QTextFormat.UserProperty + 1, imageObject)
            self.cursor.insertText('\ufffc', imageObjectFormat);

        elif type(node) is MathFragment:
            mathFormula = MathFormulaObject()
            mathFormula.setFormula(node.text)
            mathFormula.image = node.image #  renderFormula()

            mathObjectFormat = QTextCharFormat()
            mathObjectFormat.setObjectType(QTextFormat.UserObject + 1)
            mathObjectFormat.setVerticalAlignment(QTextCharFormat.AlignMiddle)
            mathObjectFormat.setProperty(QTextFormat.UserProperty + 1, mathFormula)
            self.cursor.insertText('\ufffc', mathObjectFormat);
        elif type(node) is TextFragment:
            text = node.text.replace('\n', '\u2028')
            if node.href is not None:
                fmt = self.formatManager.getFormat(('link', None, None))   # TODO!
                charFmt = fmt.getCharFormat()
                charFmt.setAnchorHref(node.href)
                self.cursor.insertText(text, charFmt)
            else:
                # "The block char format is the format used when inserting text at the beginning of an empty block.
                # Hence, the block char format is only useful for the first fragment -
                # once a fragment is inserted with a different style, and afterwards
                # another fragment is inserted with no specific style, we need to reset
                # the char format to the block's char format explicitly!
    
                if node.style is not None:
                    fmt = self.formatManager.getFormat(node.style)
                else:
                    fmt = self.paraFormat

#.........这里部分代码省略.........