def pressedReturn(self):
"""
enter or return key is pressed
:return: returns nothing
"""
cursor = self.textCursor()
listIn = cursor.currentList()
# checks if cursor is in a list
if cursor.currentList() is not None:
cursor.select(QtGui.QTextCursor.BlockUnderCursor)
text = cursor.selectedText()
text = text.strip()
if text == "":
listIn.removeItem(listIn.count() - 1)
return False
currlist = listIn.format()
style = currlist.style()
cursor = self.textCursor()
cursor.insertText("\n")
listFormat = QTextListFormat()
listFormat.setStyle(style)
listFormat.setIndent(currlist.indent())
cursor.createList(listFormat)
return False
return True
def textStyle(self, styleIndex):
cursor = self.textEdit.textCursor()
if styleIndex:
styleDict = {
1: QTextListFormat.ListDisc,
2: QTextListFormat.ListCircle,
3: QTextListFormat.ListSquare,
4: QTextListFormat.ListDecimal,
5: QTextListFormat.ListLowerAlpha,
6: QTextListFormat.ListUpperAlpha,
7: QTextListFormat.ListLowerRoman,
8: QTextListFormat.ListUpperRoman,
}
style = styleDict.get(styleIndex, QTextListFormat.ListDisc)
cursor.beginEditBlock()
blockFmt = cursor.blockFormat()
listFmt = QTextListFormat()
if cursor.currentList():
listFmt = cursor.currentList().format()
else:
listFmt.setIndent(blockFmt.indent() + 1)
blockFmt.setIndent(0)
cursor.setBlockFormat(blockFmt)
listFmt.setStyle(style)
cursor.createList(listFmt)
cursor.endEditBlock()
else:
bfmt = QTextBlockFormat()
bfmt.setObjectIndex(-1)
cursor.mergeBlockFormat(bfmt)
def bulletList(self):
"""
bullet list created on cursor location
:return: returns nothing
"""
logging.info("bullet list: created")
style = QTextListFormat.ListDisc
cursor = self.textCursor()
cursor.select(QtGui.QTextCursor.LineUnderCursor)
listFormat = QTextListFormat()
listFormat.setStyle(style)
cursor.createList(listFormat)
def _text_style(self, index: int):
styles = {
1: QTextListFormat.ListDisc,
2: QTextListFormat.ListCircle,
3: QTextListFormat.ListSquare,
4: QTextListFormat.ListDecimal,
5: QTextListFormat.ListLowerAlpha,
6: QTextListFormat.ListUpperAlpha,
7: QTextListFormat.ListLowerRoman,
8: QTextListFormat.ListUpperRoman
}
cursor = self.textEdit.textCursor()
try:
style = styles[index]
except KeyError:
style = None
cursor.beginEditBlock()
block_fmt = cursor.blockFormat()
if style is None:
block_fmt.setObjectIndex(-1)
heading_level = index - 9 + 1 if index >= 9 else 0
block_fmt.setHeadingLevel(heading_level)
cursor.setBlockFormat(block_fmt)
size = 4 - heading_level if heading_level else 0
fmt = QTextCharFormat()
fmt.setFontWeight(QFont.Bold if heading_level else QFont.Normal)
fmt.setProperty(QTextFormat.FontSizeAdjustment, size)
cursor.select(QTextCursor.LineUnderCursor)
cursor.mergeCharFormat(fmt)
self.textEdit.mergeCurrentCharFormat(fmt)
else:
list_fmt = QTextListFormat()
if cursor.currentList():
list_fmt = cursor.currentList().format()
else:
list_fmt.setIndent(block_fmt.indent() + 1)
block_fmt.setIndent(0)
cursor.setBlockFormat(block_fmt)
list_fmt.setStyle(style)
cursor.createList(list_fmt)
cursor.endEditBlock()
def moveListForward(self):
"""
helper function when tab is pressed in bullet list
:return: returns nothing
"""
cursor = self.textCursor()
listIn = cursor.currentList()
currlist = listIn.format()
style = currlist.style()
# updates style to next bullet
if style == -3:
style = -1
else:
style -= 1
listFormat = QTextListFormat()
# adds indent
listFormat.setIndent(currlist.indent() + 1)
listFormat.setStyle(style)
listIn.setFormat(listFormat)
def moveListBackward(self):
"""
helper function when shift-tab is pressed in bullet list
:return: returns nothing
"""
cursor = self.textCursor()
listIn = cursor.currentList()
currlist = listIn.format()
indent = currlist.indent()
style = currlist.style()
# checks if indent can be removed then removes
if indent != 1:
indent -= 1
# if indent can be removed get previous bullet style
if style == -1:
style = -3
else:
style += 1
listFormat = QTextListFormat()
listFormat.setIndent(indent)
listFormat.setStyle(style)
listIn.setFormat(listFormat)
def test(self):
# 选中文本字符
cursor = self.textEdit.textCursor() # 每次点击必须获取新的textCursor
# 打印当前光标的位置
print(cursor.position())
cursor.setPosition(3, QTextCursor.KeepAnchor)
self.textEdit.setTextCursor(cursor)
self.textEdit.setFocus()
print(cursor.selectedText()) # 打印选中的文本
return None
qc = QColor(255, 0, 0)
self.textEdit.setTextBackgroundColor(qc)
self.textEdit.setFocus()
cursor = self.textEdit.textCursor()
# 移动光标
cursor.movePosition(QTextCursor.Left, n=1)
# 移动完成之后，在编辑器上显示出来
self.textEdit.setTextCursor(cursor)
# 获取光标的焦点(未设置可以移动，但无法显示光标)
self.textEdit.setFocus()
cursor.insertText('hello')
# 选中文本
cursor.select(QTextCursor.WordUnderCursor)
print(cursor.selectionStart(), cursor.selectionEnd())
print(cursor.selectedText())
# 插入一个表格(行,列)
ttf = QTextTableFormat()
ttf.setCellSpacing(10.0)
ttf.setCellPadding(10.0)
cursor.insertTable(2, 3, ttf)
# 插入一个列表
tlf = QTextListFormat()
tlf.setStyle(QTextListFormat.ListDisc)
cursor.insertList(tlf)
cursor.insertList(QTextListFormat.ListDisc)
# 利用文本光标插入纯文本或者HTML
cursor.insertText('<h1>123</h1>')
cursor.insertHtml('<h1>123</h1>')
cursor.insertImage('./start.jpg') # 暂时无法显示
# 设置字体
qfont = QFont()
qfont.setFamily('微软雅黑')
self.textEdit.setCurrentFont(qfont) # 从当前光标处开始为微软雅黑
# 设置文档标题
self.textEdit.setDocumentTitle('第一次')
self.textEdit.setFontFamily('微软雅黑')
# 在文本末尾追加内容(文本类型自动识别)
self.textEdit.append('123')
self.textEdit.append('<h1>123</h1>')
# 在光标处插入文本（需要手点确定光标位置）(不会覆盖之前的)
self.textEdit.insertPlainText('123')
self.textEdit.insertHtml('<h1>123</h1>')
# 插入纯文本
self.textEdit.setPlainText('<h1>123</h1>')
# 插入HTML
self.textEdit.setHtml('<h1>123</h1>')
# 自动识别文本类型
self.textEdit.setText('<h1>123</h1>')
self.textEdit.setText('123')
def getFormat(self, fmtId):
result = self.formats.get(fmtId)
if result is None:
result = Format(QTextBlockFormat(), QTextCharFormat(), QTextListFormat())
return result
def loadFormats(self):
self.formats = {}
stylesCSS = pkg_resources.resource_string(data.__name__, 'styles.css')
print("styles.css file: {}".format(stylesCSS))
styleSheet = cssutils.parseString(stylesCSS)
blockFormats = ['title[level="1"]',
'title[level="2"]',
'title[level="3"]',
'para',
'tip',
'warning',
'blockquote',
'programlisting[language="java"]',
'programlisting[language="cpp"]',
'programlisting[language="xml"]',
'programlisting[language="sql"]',
'programlisting[language="python"]',
'programlisting[language="bash"]',
'screen']
for cssKey in blockFormats:
cssRule = self.simpleLookup(styleSheet, cssKey)
# get the selector as a tuple of class and one attribute selector
# (Can be extended later, but currently sufficient)
m = re.match(r'^(\S*?)(?:\[(.*)="(.*)"])?$', cssKey)
selector = m.groups()
blockFmt = QTextBlockFormat()
blockFmt.setProperty(QTextFormat.UserProperty, selector)
value = self.getIntValue(cssRule, 'margin-top')
if value:
blockFmt.setTopMargin(value)
value = self.getIntValue(cssRule, 'margin-right')
if value:
blockFmt.setRightMargin(value)
value = self.getIntValue(cssRule, 'margin-bottom')
if value:
blockFmt.setBottomMargin(value)
value = self.getIntValue(cssRule, 'margin-left')
if value:
blockFmt.setLeftMargin(value)
value = self.getColorValue(cssRule, 'background-color')
if value:
blockFmt.setBackground(value)
charFmt = QTextCharFormat()
self.setCharFormatAttributes(cssRule, charFmt)
fmt = Format(blockFmt, charFmt)
value = self.getStringValue(cssRule, 'white-space')
if value and value == 'pre':
fmt.isPre = True
self.formats[selector] = fmt
### List formats
listFormats = ['itemizedlist[level="1"]',
'itemizedlist[level="2"]',
'itemizedlist[level="3"]',
'itemizedlist[level="4"]',
'orderedlist[level="1"]',
'orderedlist[level="2"]' ,
'orderedlist[level="3"]',
'orderedlist[level="4"]']
for cssKey in listFormats:
cssRule = self.simpleLookup(styleSheet, cssKey)
indent = 0
m = re.match(r'^(\S*?)(?:\[(.*)="(.*)"])?$', cssKey)
selector = m.groups()
if selector[1] == 'level':
indent = int(selector[2])
listFmt = QTextListFormat()
listFmt.setProperty(QTextFormat.UserProperty, selector)
listFmt.setIndent(indent)
value = self.getStringValue(cssRule, 'list-style-type')
if value:
if value == 'disc':
listFmt.setStyle(QTextListFormat.ListDisc)
elif value == 'circle':
listFmt.setStyle(QTextListFormat.ListCircle)
elif value == 'square':
listFmt.setStyle(QTextListFormat.ListSquare)
elif value == 'decimal':
listFmt.setStyle(QTextListFormat.ListDecimal)
self.formats[selector] = Format(None, None, listFmt)
### Inline formats
# Base format (?????)
pcharFmt = QTextCharFormat()
pcharFmt.setFontPointSize(10)
pcharFmt.setFontFamily("Sans")
inlineFormats = ['emphasis[role="highlight"]',
'emphasis',
'code',
'link',
'olink']
for cssKey in inlineFormats:
cssRule = self.simpleLookup(styleSheet, cssKey)
m = re.match(r'^(\S*?)(?:\[(.*)="(.*)"])?$', cssKey)
selector = m.groups()
charFmt = QTextCharFormat(pcharFmt)
charFmt.setProperty(QTextFormat.UserProperty, selector)
# TODO: better approach?
if cssKey in ['link', 'olink']:
charFmt.setAnchor(True)
self.setCharFormatAttributes(cssRule, charFmt)
self.formats[selector] = Format(None, charFmt)
### special formats
charFmt = QTextCharFormat()
cssRule = self.simpleLookup(styleSheet, 'searchMarker')
self.setCharFormatAttributes(cssRule, charFmt)
self.formats[('searchMarker', None, None)] = Format(None, charFmt)