class TextEdit(PlainTextEdit):
link_clicked = pyqtSignal(object)
smart_highlighting_updated = pyqtSignal()
def __init__(self, parent=None, expected_geometry=(100, 50)):
PlainTextEdit.__init__(self, parent)
self.snippet_manager = SnippetManager(self)
self.completion_popup = CompletionPopup(self)
self.request_completion = self.completion_doc_name = None
self.clear_completion_cache_timer = t = QTimer(self)
t.setInterval(5000), t.timeout.connect(self.clear_completion_cache), t.setSingleShot(True)
self.textChanged.connect(t.start)
self.last_completion_request = -1
self.gutter_width = 0
self.tw = 2
self.expected_geometry = expected_geometry
self.saved_matches = {}
self.syntax = None
self.smarts = NullSmarts(self)
self.current_cursor_line = None
self.current_search_mark = None
self.smarts_highlight_timer = t = QTimer()
t.setInterval(750), t.setSingleShot(True), t.timeout.connect(self.update_extra_selections)
self.highlighter = SyntaxHighlighter()
self.line_number_area = LineNumbers(self)
self.apply_settings()
self.setMouseTracking(True)
self.cursorPositionChanged.connect(self.highlight_cursor_line)
self.blockCountChanged[int].connect(self.update_line_number_area_width)
self.updateRequest.connect(self.update_line_number_area)
@dynamic_property
def is_modified(self):
""" True if the document has been modified since it was loaded or since
the last time is_modified was set to False. """
def fget(self):
return self.document().isModified()
def fset(self, val):
self.document().setModified(bool(val))
return property(fget=fget, fset=fset)
def sizeHint(self):
return self.size_hint
def apply_settings(self, prefs=None, dictionaries_changed=False): # {{{
prefs = prefs or tprefs
self.setAcceptDrops(prefs.get("editor_accepts_drops", True))
self.setLineWrapMode(QPlainTextEdit.WidgetWidth if prefs["editor_line_wrap"] else QPlainTextEdit.NoWrap)
theme = get_theme(prefs["editor_theme"])
self.apply_theme(theme)
w = self.fontMetrics()
self.space_width = w.width(" ")
self.tw = (
self.smarts.override_tab_stop_width
if self.smarts.override_tab_stop_width is not None
else prefs["editor_tab_stop_width"]
)
self.setTabStopWidth(self.tw * self.space_width)
if dictionaries_changed:
self.highlighter.rehighlight()
def apply_theme(self, theme):
self.theme = theme
pal = self.palette()
pal.setColor(pal.Base, theme_color(theme, "Normal", "bg"))
pal.setColor(pal.AlternateBase, theme_color(theme, "CursorLine", "bg"))
pal.setColor(pal.Text, theme_color(theme, "Normal", "fg"))
pal.setColor(pal.Highlight, theme_color(theme, "Visual", "bg"))
pal.setColor(pal.HighlightedText, theme_color(theme, "Visual", "fg"))
self.setPalette(pal)
self.tooltip_palette = pal = QPalette()
pal.setColor(pal.ToolTipBase, theme_color(theme, "Tooltip", "bg"))
pal.setColor(pal.ToolTipText, theme_color(theme, "Tooltip", "fg"))
self.line_number_palette = pal = QPalette()
pal.setColor(pal.Base, theme_color(theme, "LineNr", "bg"))
pal.setColor(pal.Text, theme_color(theme, "LineNr", "fg"))
pal.setColor(pal.BrightText, theme_color(theme, "LineNrC", "fg"))
self.match_paren_format = theme_format(theme, "MatchParen")
font = self.font()
ff = tprefs["editor_font_family"]
if ff is None:
ff = default_font_family()
font.setFamily(ff)
font.setPointSize(tprefs["editor_font_size"])
self.tooltip_font = QFont(font)
self.tooltip_font.setPointSize(font.pointSize() - 1)
self.setFont(font)
self.highlighter.apply_theme(theme)
w = self.fontMetrics()
self.number_width = max(map(lambda x: w.width(str(x)), xrange(10)))
self.size_hint = QSize(self.expected_geometry[0] * w.averageCharWidth(), self.expected_geometry[1] * w.height())
self.highlight_color = theme_color(theme, "HighlightRegion", "bg")
self.highlight_cursor_line()
self.completion_popup.clear_caches(), self.completion_popup.update()
# }}}
def load_text(self, text, syntax="html", process_template=False, doc_name=None):
self.syntax = syntax
self.highlighter = get_highlighter(syntax)()
self.highlighter.apply_theme(self.theme)
self.highlighter.set_document(self.document(), doc_name=doc_name)
sclass = get_smarts(syntax)
if sclass is not None:
self.smarts = sclass(self)
if self.smarts.override_tab_stop_width is not None:
self.tw = self.smarts.override_tab_stop_width
self.setTabStopWidth(self.tw * self.space_width)
self.setPlainText(unicodedata.normalize("NFC", unicode(text)))
if process_template and QPlainTextEdit.find(self, "%CURSOR%"):
c = self.textCursor()
c.insertText("")
def change_document_name(self, newname):
self.highlighter.doc_name = newname
self.highlighter.rehighlight() # Ensure links are checked w.r.t. the new name correctly
def replace_text(self, text):
c = self.textCursor()
pos = c.position()
c.beginEditBlock()
c.clearSelection()
c.select(c.Document)
c.insertText(unicodedata.normalize("NFC", text))
c.endEditBlock()
c.setPosition(min(pos, len(text)))
self.setTextCursor(c)
self.ensureCursorVisible()
def simple_replace(self, text, cursor=None):
c = cursor or self.textCursor()
c.insertText(unicodedata.normalize("NFC", text))
self.setTextCursor(c)
def go_to_line(self, lnum, col=None):
lnum = max(1, min(self.blockCount(), lnum))
c = self.textCursor()
c.clearSelection()
c.movePosition(c.Start)
c.movePosition(c.NextBlock, n=lnum - 1)
c.movePosition(c.StartOfLine)
c.movePosition(c.EndOfLine, c.KeepAnchor)
text = unicode(c.selectedText()).rstrip("\0")
if col is None:
c.movePosition(c.StartOfLine)
lt = text.lstrip()
if text and lt and lt != text:
c.movePosition(c.NextWord)
else:
c.setPosition(c.block().position() + col)
if c.blockNumber() + 1 > lnum:
# We have moved past the end of the line
c.setPosition(c.block().position())
c.movePosition(c.EndOfBlock)
self.setTextCursor(c)
self.ensureCursorVisible()
def update_extra_selections(self, instant=True):
sel = []
if self.current_cursor_line is not None:
sel.append(self.current_cursor_line)
if self.current_search_mark is not None:
sel.append(self.current_search_mark)
if instant and not self.highlighter.has_requests and self.smarts is not None:
sel.extend(self.smarts.get_extra_selections(self))
self.smart_highlighting_updated.emit()
else:
self.smarts_highlight_timer.start()
self.setExtraSelections(sel)
# Search and replace {{{
def mark_selected_text(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.highlight_color)
sel.cursor = self.textCursor()
if sel.cursor.hasSelection():
self.current_search_mark = sel
c = self.textCursor()
c.clearSelection()
self.setTextCursor(c)
else:
self.current_search_mark = None
self.update_extra_selections()
def find_in_marked(self, pat, wrap=False, save_match=None):
if self.current_search_mark is None:
return False
csm = self.current_search_mark.cursor
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
m_start = min(csm.position(), csm.anchor())
m_end = max(csm.position(), csm.anchor())
if c.position() < m_start:
c.setPosition(m_start)
if c.position() > m_end:
c.setPosition(m_end)
pos = m_start if reverse else m_end
if wrap:
pos = m_end if reverse else m_start
c.setPosition(pos, c.KeepAnchor)
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, "\n").rstrip("\0")
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
start, end = m_start + start, m_start + end
else:
if reverse:
start, end = m_start + end, m_start + start
else:
start, end = c.anchor() + start, c.anchor() + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def all_in_marked(self, pat, template=None):
if self.current_search_mark is None:
return 0
c = self.current_search_mark.cursor
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, "\n").rstrip("\0")
if template is None:
count = len(pat.findall(raw))
else:
from calibre.gui2.tweak_book.function_replace import Function
repl_is_func = isinstance(template, Function)
if repl_is_func:
template.init_env()
raw, count = pat.subn(template, raw)
if repl_is_func:
from calibre.gui2.tweak_book.search import show_function_debug_output
template.end()
show_function_debug_output(template)
if count > 0:
start_pos = min(c.anchor(), c.position())
c.insertText(raw)
end_pos = max(c.anchor(), c.position())
c.setPosition(start_pos), c.setPosition(end_pos, c.KeepAnchor)
self.update_extra_selections()
return count
def smart_comment(self):
from calibre.gui2.tweak_book.editor.comments import smart_comment
smart_comment(self, self.syntax)
def find(self, pat, wrap=False, marked=False, complete=False, save_match=None):
if marked:
return self.find_in_marked(pat, wrap=wrap, save_match=save_match)
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
if complete:
# Search the entire text
c.movePosition(c.End if reverse else c.Start)
pos = c.Start if reverse else c.End
if wrap and not complete:
pos = c.End if reverse else c.Start
c.movePosition(pos, c.KeepAnchor)
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, "\n").rstrip("\0")
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap and not complete:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
if reverse:
# Put the cursor at the start of the match
start, end = end, start
else:
textpos = c.anchor()
start, end = textpos + start, textpos + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def find_spell_word(self, original_words, lang, from_cursor=True, center_on_cursor=True):
c = self.textCursor()
c.setPosition(c.position())
if not from_cursor:
c.movePosition(c.Start)
c.movePosition(c.End, c.KeepAnchor)
def find_first_word(haystack):
match_pos, match_word = -1, None
for w in original_words:
idx = index_of(w, haystack, lang=lang)
if idx > -1 and (match_pos == -1 or match_pos > idx):
match_pos, match_word = idx, w
return match_pos, match_word
while True:
text = unicode(c.selectedText()).rstrip("\0")
idx, word = find_first_word(text)
if idx == -1:
return False
c.setPosition(c.anchor() + idx)
c.setPosition(c.position() + string_length(word), c.KeepAnchor)
if self.smarts.verify_for_spellcheck(c, self.highlighter):
self.setTextCursor(c)
if center_on_cursor:
self.centerCursor()
return True
c.setPosition(c.position())
c.movePosition(c.End, c.KeepAnchor)
return False
def find_next_spell_error(self, from_cursor=True):
c = self.textCursor()
if not from_cursor:
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY):
if not from_cursor or block.position() + r.start + r.length > c.position():
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
self.setTextCursor(c)
return True
block = block.next()
return False
def replace(self, pat, template, saved_match="gui"):
c = self.textCursor()
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, "\n").rstrip("\0")
m = pat.fullmatch(raw)
if m is None:
# This can happen if either the user changed the selected text or
# the search expression uses lookahead/lookbehind operators. See if
# the saved match matches the currently selected text and
# use it, if so.
if saved_match is not None and saved_match in self.saved_matches:
saved_pat, saved = self.saved_matches.pop(saved_match)
if saved_pat == pat and saved.group() == raw:
m = saved
if m is None:
return False
if callable(template):
text = template(m)
else:
text = m.expand(template)
c.insertText(text)
return True
def go_to_anchor(self, anchor):
if anchor is TOP:
c = self.textCursor()
c.movePosition(c.Start)
self.setTextCursor(c)
return True
base = r"""%%s\s*=\s*['"]{0,1}%s""" % regex.escape(anchor)
raw = unicode(self.toPlainText())
m = regex.search(base % "id", raw)
if m is None:
m = regex.search(base % "name", raw)
if m is not None:
c = self.textCursor()
c.setPosition(m.start())
self.setTextCursor(c)
return True
return False
# }}}
# Line numbers and cursor line {{{
def highlight_cursor_line(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.palette().alternateBase())
sel.format.setProperty(QTextFormat.FullWidthSelection, True)
sel.cursor = self.textCursor()
sel.cursor.clearSelection()
self.current_cursor_line = sel
self.update_extra_selections(instant=False)
# Update the cursor line's line number in the line number area
try:
self.line_number_area.update(
0, self.last_current_lnum[0], self.line_number_area.width(), self.last_current_lnum[1]
)
except AttributeError:
pass
block = self.textCursor().block()
top = int(self.blockBoundingGeometry(block).translated(self.contentOffset()).top())
height = int(self.blockBoundingRect(block).height())
self.line_number_area.update(0, top, self.line_number_area.width(), height)
def update_line_number_area_width(self, block_count=0):
self.gutter_width = self.line_number_area_width()
self.setViewportMargins(self.gutter_width, 0, 0, 0)
def line_number_area_width(self):
digits = 1
limit = max(1, self.blockCount())
while limit >= 10:
limit /= 10
digits += 1
return 8 + self.number_width * digits
def update_line_number_area(self, rect, dy):
if dy:
self.line_number_area.scroll(0, dy)
else:
self.line_number_area.update(0, rect.y(), self.line_number_area.width(), rect.height())
if rect.contains(self.viewport().rect()):
self.update_line_number_area_width()
def resizeEvent(self, ev):
QPlainTextEdit.resizeEvent(self, ev)
cr = self.contentsRect()
self.line_number_area.setGeometry(QRect(cr.left(), cr.top(), self.line_number_area_width(), cr.height()))
def paint_line_numbers(self, ev):
painter = QPainter(self.line_number_area)
painter.fillRect(ev.rect(), self.line_number_palette.color(QPalette.Base))
block = self.firstVisibleBlock()
num = block.blockNumber()
top = int(self.blockBoundingGeometry(block).translated(self.contentOffset()).top())
bottom = top + int(self.blockBoundingRect(block).height())
current = self.textCursor().block().blockNumber()
painter.setPen(self.line_number_palette.color(QPalette.Text))
while block.isValid() and top <= ev.rect().bottom():
if block.isVisible() and bottom >= ev.rect().top():
if current == num:
painter.save()
painter.setPen(self.line_number_palette.color(QPalette.BrightText))
f = QFont(self.font())
f.setBold(True)
painter.setFont(f)
self.last_current_lnum = (top, bottom - top)
painter.drawText(
0, top, self.line_number_area.width() - 5, self.fontMetrics().height(), Qt.AlignRight, str(num + 1)
)
if current == num:
painter.restore()
block = block.next()
top = bottom
bottom = top + int(self.blockBoundingRect(block).height())
num += 1
# }}}
def event(self, ev):
if ev.type() == ev.ToolTip:
self.show_tooltip(ev)
return True
if ev.type() == ev.ShortcutOverride:
# Let the global cut/copy/paste/undo/redo shortcuts work, this avoids the nbsp
# problem as well, since they use the overridden copy() method
# instead of the one from Qt, and allows proper customization
# of the shortcuts
if ev in (QKeySequence.Copy, QKeySequence.Cut, QKeySequence.Paste, QKeySequence.Undo, QKeySequence.Redo):
ev.ignore()
return True
# This is used to convert typed hex codes into unicode
# characters
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
ev.accept()
return True
return QPlainTextEdit.event(self, ev)
def text_for_range(self, block, r):
c = self.textCursor()
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
return unicode(c.selectedText())
def spellcheck_locale_for_cursor(self, c):
with store_locale:
formats = self.highlighter.parse_single_block(c.block())[0]
pos = c.positionInBlock()
for r in formats:
if r.start <= pos <= r.start + r.length and r.format.property(SPELL_PROPERTY):
return r.format.property(SPELL_LOCALE_PROPERTY)
def recheck_word(self, word, locale):
c = self.textCursor()
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY) and self.text_for_range(block, r) == word:
self.highlighter.reformat_block(block)
break
block = block.next()
# Tooltips {{{
def syntax_range_for_cursor(self, cursor):
if cursor.isNull():
return
pos = cursor.positionInBlock()
for r in cursor.block().layout().additionalFormats():
if r.start <= pos <= r.start + r.length and r.format.property(SYNTAX_PROPERTY):
return r
def syntax_format_for_cursor(self, cursor):
return getattr(self.syntax_range_for_cursor(cursor), "format", None)
def show_tooltip(self, ev):
c = self.cursorForPosition(ev.pos())
fmt = self.syntax_format_for_cursor(c)
if fmt is not None:
tt = unicode(fmt.toolTip())
if tt:
QToolTip.setFont(self.tooltip_font)
QToolTip.setPalette(self.tooltip_palette)
QToolTip.showText(ev.globalPos(), textwrap.fill(tt))
return
QToolTip.hideText()
ev.ignore()
# }}}
def link_for_position(self, pos):
c = self.cursorForPosition(pos)
r = self.syntax_range_for_cursor(c)
if r is not None and r.format.property(LINK_PROPERTY):
return self.text_for_range(c.block(), r)
def mousePressEvent(self, ev):
if self.completion_popup.isVisible() and not self.completion_popup.rect().contains(ev.pos()):
# For some reason using eventFilter for this does not work, so we
# implement it here
self.completion_popup.abort()
if ev.modifiers() & Qt.CTRL:
url = self.link_for_position(ev.pos())
if url is not None:
ev.accept()
self.link_clicked.emit(url)
return
return PlainTextEdit.mousePressEvent(self, ev)
def get_range_inside_tag(self):
c = self.textCursor()
left = min(c.anchor(), c.position())
right = max(c.anchor(), c.position())
# For speed we use QPlainTextEdit's toPlainText as we dont care about
# spaces in this context
raw = unicode(QPlainTextEdit.toPlainText(self))
# Make sure the left edge is not within a <>
gtpos = raw.find(">", left)
ltpos = raw.find("<", left)
if gtpos < ltpos:
left = gtpos + 1 if gtpos > -1 else left
right = max(left, right)
if right != left:
gtpos = raw.find(">", right)
ltpos = raw.find("<", right)
if ltpos > gtpos:
ltpos = raw.rfind("<", left, right + 1)
right = max(ltpos, left)
return left, right
def format_text(self, formatting):
if self.syntax != "html":
return
if formatting.startswith("justify_"):
return self.smarts.set_text_alignment(self, formatting.partition("_")[-1])
color = "currentColor"
if formatting in {"color", "background-color"}:
color = QColorDialog.getColor(
QColor(Qt.black if formatting == "color" else Qt.white),
self,
_("Choose color"),
QColorDialog.ShowAlphaChannel,
)
if not color.isValid():
return
r, g, b, a = color.getRgb()
if a == 255:
color = "rgb(%d, %d, %d)" % (r, g, b)
else:
color = "rgba(%d, %d, %d, %.2g)" % (r, g, b, a / 255)
prefix, suffix = {
"bold": ("<b>", "</b>"),
"italic": ("<i>", "</i>"),
"underline": ("<u>", "</u>"),
"strikethrough": ("<strike>", "</strike>"),
"superscript": ("<sup>", "</sup>"),
"subscript": ("<sub>", "</sub>"),
"color": ('<span style="color: %s">' % color, "</span>"),
"background-color": ('<span style="background-color: %s">' % color, "</span>"),
}[formatting]
left, right = self.get_range_inside_tag()
c = self.textCursor()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
prev_text = unicode(c.selectedText()).rstrip("\0")
c.insertText(prefix + prev_text + suffix)
if prev_text:
right = c.position()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
else:
c.setPosition(c.position() - len(suffix))
self.setTextCursor(c)
def insert_image(self, href, fullpage=False, preserve_aspect_ratio=False):
c = self.textCursor()
template, alt = "url(%s)", ""
left = min(c.position(), c.anchor)
if self.syntax == "html":
left, right = self.get_range_inside_tag()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
href = prepare_string_for_xml(href, True)
if fullpage:
template = """\
<div style="page-break-before:always; page-break-after:always; page-break-inside:avoid">\
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" \
version="1.1" width="100%%" height="100%%" viewBox="0 0 1200 1600" preserveAspectRatio="{}">\
<image width="1200" height="1600" xlink:href="%s"/>\
</svg></div>""".format(
"xMidYMid meet" if preserve_aspect_ratio else "none"
)
else:
alt = _("Image")
template = '<img alt="{0}" src="%s" />'.format(alt)
text = template % href
c.insertText(text)
if self.syntax == "html" and not fullpage:
c.setPosition(left + 10)
c.setPosition(c.position() + len(alt), c.KeepAnchor)
else:
c.setPosition(left)
c.setPosition(left + len(text), c.KeepAnchor)
self.setTextCursor(c)
def insert_hyperlink(self, target, text):
if hasattr(self.smarts, "insert_hyperlink"):
self.smarts.insert_hyperlink(self, target, text)
def insert_tag(self, tag):
if hasattr(self.smarts, "insert_tag"):
self.smarts.insert_tag(self, tag)
def keyPressEvent(self, ev):
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
if self.replace_possible_unicode_sequence():
ev.accept()
return
if ev.key() == Qt.Key_Insert:
self.setOverwriteMode(self.overwriteMode() ^ True)
ev.accept()
return
if self.snippet_manager.handle_key_press(ev):
self.completion_popup.hide()
return
if self.smarts.handle_key_press(ev, self):
self.handle_keypress_completion(ev)
return
QPlainTextEdit.keyPressEvent(self, ev)
self.handle_keypress_completion(ev)
def handle_keypress_completion(self, ev):
if self.request_completion is None:
return
code = ev.key()
if code in (
0,
Qt.Key_unknown,
Qt.Key_Shift,
Qt.Key_Control,
Qt.Key_Alt,
Qt.Key_Meta,
Qt.Key_AltGr,
Qt.Key_CapsLock,
Qt.Key_NumLock,
Qt.Key_ScrollLock,
Qt.Key_Up,
Qt.Key_Down,
):
# We ignore up/down arrow so as to not break scrolling through the
# text with the arrow keys
return
result = self.smarts.get_completion_data(self, ev)
if result is None:
self.last_completion_request += 1
else:
self.last_completion_request = self.request_completion(*result)
self.completion_popup.mark_completion(self, None if result is None else result[-1])
def handle_completion_result(self, result):
if result.request_id[0] >= self.last_completion_request:
self.completion_popup.handle_result(result)
def clear_completion_cache(self):
if self.request_completion is not None and self.completion_doc_name:
self.request_completion(None, "file:" + self.completion_doc_name)
def replace_possible_unicode_sequence(self):
c = self.textCursor()
has_selection = c.hasSelection()
if has_selection:
text = unicode(c.selectedText()).rstrip("\0")
else:
c.setPosition(c.position() - min(c.positionInBlock(), 6), c.KeepAnchor)
text = unicode(c.selectedText()).rstrip("\0")
m = re.search(r"[a-fA-F0-9]{2,6}$", text)
if m is None:
return False
text = m.group()
try:
num = int(text, 16)
except ValueError:
return False
if num > 0x10FFFF or num < 1:
return False
end_pos = max(c.anchor(), c.position())
c.setPosition(end_pos - len(text)), c.setPosition(end_pos, c.KeepAnchor)
c.insertText(safe_chr(num))
return True
def select_all(self):
c = self.textCursor()
c.clearSelection()
c.setPosition(0)
c.movePosition(c.End, c.KeepAnchor)
self.setTextCursor(c)
def rename_block_tag(self, new_name):
if hasattr(self.smarts, "rename_block_tag"):
self.smarts.rename_block_tag(self, new_name)
def current_tag(self, for_position_sync=True):
return self.smarts.cursor_position_with_sourceline(self.textCursor(), for_position_sync=for_position_sync)
def goto_sourceline(self, sourceline, tags, attribute=None):
return self.smarts.goto_sourceline(self, sourceline, tags, attribute=attribute)
def get_tag_contents(self):
c = self.smarts.get_inner_HTML(self)
if c is not None:
return self.selected_text_from_cursor(c)
def goto_css_rule(self, rule_address, sourceline_address=None):
from calibre.gui2.tweak_book.editor.smarts.css import find_rule
block = None
if self.syntax == "css":
raw = unicode(self.toPlainText())
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(line - 1)
elif sourceline_address is not None:
sourceline, tags = sourceline_address
if self.goto_sourceline(sourceline, tags):
c = self.textCursor()
c.setPosition(c.position() + 1)
self.setTextCursor(c)
raw = self.get_tag_contents()
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(c.blockNumber() + line - 1)
if block is not None and block.isValid():
c = self.textCursor()
c.setPosition(block.position() + col)
self.setTextCursor(c)
def change_case(self, action, cursor=None):
cursor = cursor or self.textCursor()
text = self.selected_text_from_cursor(cursor)
text = {"lower": lower, "upper": upper, "capitalize": capitalize, "title": titlecase, "swap": swapcase}[action](
text
)
cursor.insertText(text)
self.setTextCursor(cursor)
class TextEdit(PlainTextEdit):
link_clicked = pyqtSignal(object)
smart_highlighting_updated = pyqtSignal()
def __init__(self, parent=None, expected_geometry=(100, 50)):
PlainTextEdit.__init__(self, parent)
self.gutter_width = 0
self.tw = 2
self.expected_geometry = expected_geometry
self.saved_matches = {}
self.syntax = None
self.smarts = NullSmarts(self)
self.current_cursor_line = None
self.current_search_mark = None
self.smarts_highlight_timer = t = QTimer()
t.setInterval(750), t.setSingleShot(True), t.timeout.connect(self.update_extra_selections)
self.highlighter = SyntaxHighlighter()
self.line_number_area = LineNumbers(self)
self.apply_settings()
self.setMouseTracking(True)
self.cursorPositionChanged.connect(self.highlight_cursor_line)
self.blockCountChanged[int].connect(self.update_line_number_area_width)
self.updateRequest.connect(self.update_line_number_area)
@dynamic_property
def is_modified(self):
''' True if the document has been modified since it was loaded or since
the last time is_modified was set to False. '''
def fget(self):
return self.document().isModified()
def fset(self, val):
self.document().setModified(bool(val))
return property(fget=fget, fset=fset)
def sizeHint(self):
return self.size_hint
def apply_settings(self, prefs=None, dictionaries_changed=False): # {{{
prefs = prefs or tprefs
self.setLineWrapMode(QPlainTextEdit.WidgetWidth if prefs['editor_line_wrap'] else QPlainTextEdit.NoWrap)
theme = get_theme(prefs['editor_theme'])
self.apply_theme(theme)
w = self.fontMetrics()
self.space_width = w.width(' ')
self.tw = self.smarts.override_tab_stop_width if self.smarts.override_tab_stop_width is not None else prefs['editor_tab_stop_width']
self.setTabStopWidth(self.tw * self.space_width)
if dictionaries_changed:
self.highlighter.rehighlight()
def apply_theme(self, theme):
self.theme = theme
pal = self.palette()
pal.setColor(pal.Base, theme_color(theme, 'Normal', 'bg'))
pal.setColor(pal.AlternateBase, theme_color(theme, 'CursorLine', 'bg'))
pal.setColor(pal.Text, theme_color(theme, 'Normal', 'fg'))
pal.setColor(pal.Highlight, theme_color(theme, 'Visual', 'bg'))
pal.setColor(pal.HighlightedText, theme_color(theme, 'Visual', 'fg'))
self.setPalette(pal)
self.tooltip_palette = pal = QPalette()
pal.setColor(pal.ToolTipBase, theme_color(theme, 'Tooltip', 'bg'))
pal.setColor(pal.ToolTipText, theme_color(theme, 'Tooltip', 'fg'))
self.line_number_palette = pal = QPalette()
pal.setColor(pal.Base, theme_color(theme, 'LineNr', 'bg'))
pal.setColor(pal.Text, theme_color(theme, 'LineNr', 'fg'))
pal.setColor(pal.BrightText, theme_color(theme, 'LineNrC', 'fg'))
self.match_paren_format = theme_format(theme, 'MatchParen')
font = self.font()
ff = tprefs['editor_font_family']
if ff is None:
ff = default_font_family()
font.setFamily(ff)
font.setPointSize(tprefs['editor_font_size'])
self.tooltip_font = QFont(font)
self.tooltip_font.setPointSize(font.pointSize() - 1)
self.setFont(font)
self.highlighter.apply_theme(theme)
w = self.fontMetrics()
self.number_width = max(map(lambda x:w.width(str(x)), xrange(10)))
self.size_hint = QSize(self.expected_geometry[0] * w.averageCharWidth(), self.expected_geometry[1] * w.height())
self.highlight_color = theme_color(theme, 'HighlightRegion', 'bg')
self.highlight_cursor_line()
# }}}
def load_text(self, text, syntax='html', process_template=False, doc_name=None):
self.syntax = syntax
self.highlighter = get_highlighter(syntax)()
self.highlighter.apply_theme(self.theme)
self.highlighter.set_document(self.document(), doc_name=doc_name)
sclass = get_smarts(syntax)
if sclass is not None:
self.smarts = sclass(self)
if self.smarts.override_tab_stop_width is not None:
self.tw = self.smarts.override_tab_stop_width
self.setTabStopWidth(self.tw * self.space_width)
self.setPlainText(unicodedata.normalize('NFC', unicode(text)))
if process_template and QPlainTextEdit.find(self, '%CURSOR%'):
c = self.textCursor()
c.insertText('')
def change_document_name(self, newname):
self.highlighter.doc_name = newname
self.highlighter.rehighlight() # Ensure links are checked w.r.t. the new name correctly
def replace_text(self, text):
c = self.textCursor()
pos = c.position()
c.beginEditBlock()
c.clearSelection()
c.select(c.Document)
c.insertText(unicodedata.normalize('NFC', text))
c.endEditBlock()
c.setPosition(min(pos, len(text)))
self.setTextCursor(c)
self.ensureCursorVisible()
def simple_replace(self, text, cursor=None):
c = cursor or self.textCursor()
c.insertText(unicodedata.normalize('NFC', text))
self.setTextCursor(c)
def go_to_line(self, lnum, col=None):
lnum = max(1, min(self.blockCount(), lnum))
c = self.textCursor()
c.clearSelection()
c.movePosition(c.Start)
c.movePosition(c.NextBlock, n=lnum - 1)
c.movePosition(c.StartOfLine)
c.movePosition(c.EndOfLine, c.KeepAnchor)
text = unicode(c.selectedText()).rstrip('\0')
if col is None:
c.movePosition(c.StartOfLine)
lt = text.lstrip()
if text and lt and lt != text:
c.movePosition(c.NextWord)
else:
c.setPosition(c.block().position() + col)
if c.blockNumber() + 1 > lnum:
# We have moved past the end of the line
c.setPosition(c.block().position())
c.movePosition(c.EndOfBlock)
self.setTextCursor(c)
self.ensureCursorVisible()
def update_extra_selections(self, instant=True):
sel = []
if self.current_cursor_line is not None:
sel.append(self.current_cursor_line)
if self.current_search_mark is not None:
sel.append(self.current_search_mark)
if instant and not self.highlighter.has_requests and self.smarts is not None:
sel.extend(self.smarts.get_extra_selections(self))
self.smart_highlighting_updated.emit()
else:
self.smarts_highlight_timer.start()
self.setExtraSelections(sel)
# Search and replace {{{
def mark_selected_text(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.highlight_color)
sel.cursor = self.textCursor()
if sel.cursor.hasSelection():
self.current_search_mark = sel
c = self.textCursor()
c.clearSelection()
self.setTextCursor(c)
else:
self.current_search_mark = None
self.update_extra_selections()
def find_in_marked(self, pat, wrap=False, save_match=None):
if self.current_search_mark is None:
return False
csm = self.current_search_mark.cursor
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
m_start = min(csm.position(), csm.anchor())
m_end = max(csm.position(), csm.anchor())
if c.position() < m_start:
c.setPosition(m_start)
if c.position() > m_end:
c.setPosition(m_end)
pos = m_start if reverse else m_end
if wrap:
pos = m_end if reverse else m_start
c.setPosition(pos, c.KeepAnchor)
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
start, end = m_start + start, m_start + end
else:
if reverse:
start, end = m_start + end, m_start + start
else:
start, end = c.anchor() + start, c.anchor() + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def all_in_marked(self, pat, template=None):
if self.current_search_mark is None:
return 0
c = self.current_search_mark.cursor
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
if template is None:
count = len(pat.findall(raw))
else:
from calibre.gui2.tweak_book.function_replace import Function
repl_is_func = isinstance(template, Function)
if repl_is_func:
template.init_env()
raw, count = pat.subn(template, raw)
if repl_is_func:
from calibre.gui2.tweak_book.search import show_function_debug_output
template.end()
show_function_debug_output(template)
if count > 0:
start_pos = min(c.anchor(), c.position())
c.insertText(raw)
end_pos = max(c.anchor(), c.position())
c.setPosition(start_pos), c.setPosition(end_pos, c.KeepAnchor)
self.update_extra_selections()
return count
def find(self, pat, wrap=False, marked=False, complete=False, save_match=None):
if marked:
return self.find_in_marked(pat, wrap=wrap, save_match=save_match)
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
if complete:
# Search the entire text
c.movePosition(c.End if reverse else c.Start)
pos = c.Start if reverse else c.End
if wrap and not complete:
pos = c.End if reverse else c.Start
c.movePosition(pos, c.KeepAnchor)
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap and not complete:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
if reverse:
# Put the cursor at the start of the match
start, end = end, start
else:
textpos = c.anchor()
start, end = textpos + start, textpos + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def find_spell_word(self, original_words, lang, from_cursor=True, center_on_cursor=True):
c = self.textCursor()
c.setPosition(c.position())
if not from_cursor:
c.movePosition(c.Start)
c.movePosition(c.End, c.KeepAnchor)
def find_first_word(haystack):
match_pos, match_word = -1, None
for w in original_words:
idx = index_of(w, haystack, lang=lang)
if idx > -1 and (match_pos == -1 or match_pos > idx):
match_pos, match_word = idx, w
return match_pos, match_word
while True:
text = unicode(c.selectedText()).rstrip('\0')
idx, word = find_first_word(text)
if idx == -1:
return False
c.setPosition(c.anchor() + idx)
c.setPosition(c.position() + string_length(word), c.KeepAnchor)
if self.smarts.verify_for_spellcheck(c, self.highlighter):
self.setTextCursor(c)
if center_on_cursor:
self.centerCursor()
return True
c.setPosition(c.position())
c.movePosition(c.End, c.KeepAnchor)
return False
def find_next_spell_error(self, from_cursor=True):
c = self.textCursor()
if not from_cursor:
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY):
if not from_cursor or block.position() + r.start + r.length > c.position():
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
self.setTextCursor(c)
return True
block = block.next()
return False
def replace(self, pat, template, saved_match='gui'):
c = self.textCursor()
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.fullmatch(raw)
if m is None:
# This can happen if either the user changed the selected text or
# the search expression uses lookahead/lookbehind operators. See if
# the saved match matches the currently selected text and
# use it, if so.
if saved_match is not None and saved_match in self.saved_matches:
saved_pat, saved = self.saved_matches.pop(saved_match)
if saved_pat == pat and saved.group() == raw:
m = saved
if m is None:
return False
if callable(template):
text = template(m)
else:
text = m.expand(template)
c.insertText(text)
return True
def go_to_anchor(self, anchor):
if anchor is TOP:
c = self.textCursor()
c.movePosition(c.Start)
self.setTextCursor(c)
return True
base = r'''%%s\s*=\s*['"]{0,1}%s''' % regex.escape(anchor)
raw = unicode(self.toPlainText())
m = regex.search(base % 'id', raw)
if m is None:
m = regex.search(base % 'name', raw)
if m is not None:
c = self.textCursor()
c.setPosition(m.start())
self.setTextCursor(c)
return True
return False
# }}}
# Line numbers and cursor line {{{
def highlight_cursor_line(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.palette().alternateBase())
sel.format.setProperty(QTextFormat.FullWidthSelection, True)
sel.cursor = self.textCursor()
sel.cursor.clearSelection()
self.current_cursor_line = sel
self.update_extra_selections(instant=False)
# Update the cursor line's line number in the line number area
try:
self.line_number_area.update(0, self.last_current_lnum[0], self.line_number_area.width(), self.last_current_lnum[1])
except AttributeError:
pass
block = self.textCursor().block()
top = int(self.blockBoundingGeometry(block).translated(self.contentOffset()).top())
height = int(self.blockBoundingRect(block).height())
self.line_number_area.update(0, top, self.line_number_area.width(), height)
def update_line_number_area_width(self, block_count=0):
self.gutter_width = self.line_number_area_width()
self.setViewportMargins(self.gutter_width, 0, 0, 0)
def line_number_area_width(self):
digits = 1
limit = max(1, self.blockCount())
while limit >= 10:
limit /= 10
digits += 1
return 8 + self.number_width * digits
def update_line_number_area(self, rect, dy):
if dy:
self.line_number_area.scroll(0, dy)
else:
self.line_number_area.update(0, rect.y(), self.line_number_area.width(), rect.height())
if rect.contains(self.viewport().rect()):
self.update_line_number_area_width()
def resizeEvent(self, ev):
QPlainTextEdit.resizeEvent(self, ev)
cr = self.contentsRect()
self.line_number_area.setGeometry(QRect(cr.left(), cr.top(), self.line_number_area_width(), cr.height()))
def paint_line_numbers(self, ev):
painter = QPainter(self.line_number_area)
painter.fillRect(ev.rect(), self.line_number_palette.color(QPalette.Base))
block = self.firstVisibleBlock()
num = block.blockNumber()
top = int(self.blockBoundingGeometry(block).translated(self.contentOffset()).top())
bottom = top + int(self.blockBoundingRect(block).height())
current = self.textCursor().block().blockNumber()
painter.setPen(self.line_number_palette.color(QPalette.Text))
while block.isValid() and top <= ev.rect().bottom():
if block.isVisible() and bottom >= ev.rect().top():
if current == num:
painter.save()
painter.setPen(self.line_number_palette.color(QPalette.BrightText))
f = QFont(self.font())
f.setBold(True)
painter.setFont(f)
self.last_current_lnum = (top, bottom - top)
painter.drawText(0, top, self.line_number_area.width() - 5, self.fontMetrics().height(),
Qt.AlignRight, str(num + 1))
if current == num:
painter.restore()
block = block.next()
top = bottom
bottom = top + int(self.blockBoundingRect(block).height())
num += 1
# }}}
def event(self, ev):
if ev.type() == ev.ToolTip:
self.show_tooltip(ev)
return True
if ev.type() == ev.ShortcutOverride:
if ev in (
# Let the global cut/copy/paste/undo/redo shortcuts work,this avoids the nbsp
# problem as well, since they use the overridden copy() method
# instead of the one from Qt, and allows proper customization
# of the shortcuts
QKeySequence.Copy, QKeySequence.Cut, QKeySequence.Paste, QKeySequence.Undo, QKeySequence.Redo
) or (
# This is used to convert typed hex codes into unicode
# characters
ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier
):
ev.ignore()
return False
return QPlainTextEdit.event(self, ev)
def text_for_range(self, block, r):
c = self.textCursor()
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
return unicode(c.selectedText())
def spellcheck_locale_for_cursor(self, c):
with store_locale:
formats = self.highlighter.parse_single_block(c.block())[0]
pos = c.positionInBlock()
for r in formats:
if r.start <= pos < r.start + r.length and r.format.property(SPELL_PROPERTY):
return r.format.property(SPELL_LOCALE_PROPERTY)
def recheck_word(self, word, locale):
c = self.textCursor()
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY) and self.text_for_range(block, r) == word:
self.highlighter.reformat_block(block)
break
block = block.next()
# Tooltips {{{
def syntax_range_for_cursor(self, cursor):
if cursor.isNull():
return
pos = cursor.positionInBlock()
for r in cursor.block().layout().additionalFormats():
if r.start <= pos < r.start + r.length and r.format.property(SYNTAX_PROPERTY):
return r
def syntax_format_for_cursor(self, cursor):
return getattr(self.syntax_range_for_cursor(cursor), 'format', None)
def show_tooltip(self, ev):
c = self.cursorForPosition(ev.pos())
fmt = self.syntax_format_for_cursor(c)
if fmt is not None:
tt = unicode(fmt.toolTip())
if tt:
QToolTip.setFont(self.tooltip_font)
QToolTip.setPalette(self.tooltip_palette)
QToolTip.showText(ev.globalPos(), textwrap.fill(tt))
return
QToolTip.hideText()
ev.ignore()
# }}}
def link_for_position(self, pos):
c = self.cursorForPosition(pos)
r = self.syntax_range_for_cursor(c)
if r is not None and r.format.property(LINK_PROPERTY):
return self.text_for_range(c.block(), r)
def mousePressEvent(self, ev):
if ev.modifiers() & Qt.CTRL:
url = self.link_for_position(ev.pos())
if url is not None:
ev.accept()
self.link_clicked.emit(url)
return
return PlainTextEdit.mousePressEvent(self, ev)
def get_range_inside_tag(self):
c = self.textCursor()
left = min(c.anchor(), c.position())
right = max(c.anchor(), c.position())
# For speed we use QPlainTextEdit's toPlainText as we dont care about
# spaces in this context
raw = unicode(QPlainTextEdit.toPlainText(self))
# Make sure the left edge is not within a <>
gtpos = raw.find('>', left)
ltpos = raw.find('<', left)
if gtpos < ltpos:
left = gtpos + 1 if gtpos > -1 else left
right = max(left, right)
if right != left:
gtpos = raw.find('>', right)
ltpos = raw.find('<', right)
if ltpos > gtpos:
ltpos = raw.rfind('<', left, right+1)
right = max(ltpos, left)
return left, right
def format_text(self, formatting):
if self.syntax != 'html':
return
if formatting.startswith('justify_'):
return self.smarts.set_text_alignment(self, formatting.partition('_')[-1])
color = 'currentColor'
if formatting in {'color', 'background-color'}:
color = QColorDialog.getColor(QColor(Qt.black if formatting == 'color' else Qt.white), self, _('Choose color'), QColorDialog.ShowAlphaChannel)
if not color.isValid():
return
r, g, b, a = color.getRgb()
if a == 255:
color = 'rgb(%d, %d, %d)' % (r, g, b)
else:
color = 'rgba(%d, %d, %d, %.2g)' % (r, g, b, a/255)
prefix, suffix = {
'bold': ('<b>', '</b>'),
'italic': ('<i>', '</i>'),
'underline': ('<u>', '</u>'),
'strikethrough': ('<strike>', '</strike>'),
'superscript': ('<sup>', '</sup>'),
'subscript': ('<sub>', '</sub>'),
'color': ('<span style="color: %s">' % color, '</span>'),
'background-color': ('<span style="background-color: %s">' % color, '</span>'),
}[formatting]
left, right = self.get_range_inside_tag()
c = self.textCursor()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
prev_text = unicode(c.selectedText()).rstrip('\0')
c.insertText(prefix + prev_text + suffix)
if prev_text:
right = c.position()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
else:
c.setPosition(c.position() - len(suffix))
self.setTextCursor(c)
def insert_image(self, href):
c = self.textCursor()
template, alt = 'url(%s)', ''
left = min(c.position(), c.anchor)
if self.syntax == 'html':
left, right = self.get_range_inside_tag()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
alt = _('Image')
template = '<img alt="{0}" src="%s" />'.format(alt)
href = prepare_string_for_xml(href, True)
text = template % href
c.insertText(text)
if self.syntax == 'html':
c.setPosition(left + 10)
c.setPosition(c.position() + len(alt), c.KeepAnchor)
else:
c.setPosition(left)
c.setPosition(left + len(text), c.KeepAnchor)
self.setTextCursor(c)
def insert_hyperlink(self, target, text):
if hasattr(self.smarts, 'insert_hyperlink'):
self.smarts.insert_hyperlink(self, target, text)
def insert_tag(self, tag):
if hasattr(self.smarts, 'insert_tag'):
self.smarts.insert_tag(self, tag)
def keyPressEvent(self, ev):
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
if self.replace_possible_unicode_sequence():
ev.accept()
return
if ev.key() == Qt.Key_Insert:
self.setOverwriteMode(self.overwriteMode() ^ True)
ev.accept()
return
if isosx and QT_VERSION < 0x504000 and ev.modifiers() == Qt.ControlModifier and re.search(r'[a-zA-Z0-9]+', ev.text()) is not None:
# For some reason Qt 5 translates Cmd+key into text on OS X
# https://bugreports.qt-project.org/browse/QTBUG-36281
ev.setAccepted(False)
return
if self.smarts.handle_key_press(ev, self):
return
QPlainTextEdit.keyPressEvent(self, ev)
def replace_possible_unicode_sequence(self):
c = self.textCursor()
has_selection = c.hasSelection()
if has_selection:
text = unicode(c.selectedText()).rstrip('\0')
else:
c.setPosition(c.position() - min(c.positionInBlock(), 6), c.KeepAnchor)
text = unicode(c.selectedText()).rstrip('\0')
m = re.search(r'[a-fA-F0-9]{2,6}$', text)
if m is None:
return False
text = m.group()
try:
num = int(text, 16)
except ValueError:
return False
if num > 0x10ffff or num < 1:
return False
end_pos = max(c.anchor(), c.position())
c.setPosition(end_pos - len(text)), c.setPosition(end_pos, c.KeepAnchor)
c.insertText(safe_chr(num))
return True
def select_all(self):
c = self.textCursor()
c.clearSelection()
c.setPosition(0)
c.movePosition(c.End, c.KeepAnchor)
self.setTextCursor(c)
def rename_block_tag(self, new_name):
if hasattr(self.smarts, 'rename_block_tag'):
self.smarts.rename_block_tag(self, new_name)
def current_tag(self, for_position_sync=True):
return self.smarts.cursor_position_with_sourceline(self.textCursor(), for_position_sync=for_position_sync)
def goto_sourceline(self, sourceline, tags, attribute=None):
return self.smarts.goto_sourceline(self, sourceline, tags, attribute=attribute)
def get_tag_contents(self):
c = self.smarts.get_inner_HTML(self)
if c is not None:
return self.selected_text_from_cursor(c)
def goto_css_rule(self, rule_address, sourceline_address=None):
from calibre.gui2.tweak_book.editor.smarts.css import find_rule
block = None
if self.syntax == 'css':
raw = unicode(self.toPlainText())
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(line - 1)
elif sourceline_address is not None:
sourceline, tags = sourceline_address
if self.goto_sourceline(sourceline, tags):
c = self.textCursor()
c.setPosition(c.position() + 1)
self.setTextCursor(c)
raw = self.get_tag_contents()
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(c.blockNumber() + line - 1)
if block is not None and block.isValid():
c = self.textCursor()
c.setPosition(block.position() + col)
self.setTextCursor(c)
def change_case(self, action, cursor=None):
cursor = cursor or self.textCursor()
text = self.selected_text_from_cursor(cursor)
text = {'lower':lower, 'upper':upper, 'capitalize':capitalize, 'title':titlecase, 'swap':swapcase}[action](text)
cursor.insertText(text)
self.setTextCursor(cursor)
class TextEdit(PlainTextEdit):
link_clicked = pyqtSignal(object)
smart_highlighting_updated = pyqtSignal()
def __init__(self, parent=None, expected_geometry=(100, 50)):
PlainTextEdit.__init__(self, parent)
self.snippet_manager = SnippetManager(self)
self.completion_popup = CompletionPopup(self)
self.request_completion = self.completion_doc_name = None
self.clear_completion_cache_timer = t = QTimer(self)
t.setInterval(5000), t.timeout.connect(
self.clear_completion_cache), t.setSingleShot(True)
self.textChanged.connect(t.start)
self.last_completion_request = -1
self.gutter_width = 0
self.tw = 2
self.expected_geometry = expected_geometry
self.saved_matches = {}
self.syntax = None
self.smarts = NullSmarts(self)
self.current_cursor_line = None
self.current_search_mark = None
self.smarts_highlight_timer = t = QTimer()
t.setInterval(750), t.setSingleShot(True), t.timeout.connect(
self.update_extra_selections)
self.highlighter = SyntaxHighlighter()
self.line_number_area = LineNumbers(self)
self.apply_settings()
self.setMouseTracking(True)
self.cursorPositionChanged.connect(self.highlight_cursor_line)
self.blockCountChanged[int].connect(self.update_line_number_area_width)
self.updateRequest.connect(self.update_line_number_area)
def get_droppable_files(self, md):
def is_mt_ok(mt):
return self.syntax == 'html' and (mt in OEB_DOCS
or mt in OEB_STYLES
or mt.startswith('image/'))
if md.hasFormat(CONTAINER_DND_MIMETYPE):
for line in bytes(md.data(CONTAINER_DND_MIMETYPE)).decode(
'utf-8').splitlines():
mt = current_container().mime_map.get(
line, 'application/octet-stream')
if is_mt_ok(mt):
yield line, mt, True
return
for qurl in md.urls():
if qurl.isLocalFile() and os.access(qurl.toLocalFile(), os.R_OK):
path = qurl.toLocalFile()
mt = guess_type(path)
if is_mt_ok(mt):
yield path, mt, False
def canInsertFromMimeData(self, md):
if md.hasText() or (md.hasHtml()
and self.syntax == 'html') or md.hasImage():
return True
elif tuple(self.get_droppable_files(md)):
return True
return False
def insertFromMimeData(self, md):
files = tuple(self.get_droppable_files(md))
base = self.highlighter.doc_name or None
def get_name(name):
return get_recommended_folders(current_container(),
(name, ))[name] + '/' + name
def get_href(name):
return current_container().name_to_href(name, base)
def insert_text(text):
c = self.textCursor()
c.insertText(text)
self.setTextCursor(c)
def add_file(name, data, mt=None):
from calibre.gui2.tweak_book.boss import get_boss
name = current_container().add_file(name,
data,
media_type=mt,
modify_name_if_needed=True)
get_boss().refresh_file_list()
return name
if files:
for path, mt, is_name in files:
if is_name:
name = path
else:
name = get_name(os.path.basename(path))
with lopen(path, 'rb') as f:
name = add_file(name, f.read(), mt)
href = get_href(name)
if mt.startswith('image/'):
self.insert_image(href)
elif mt in OEB_STYLES:
insert_text(
'<link href="{}" rel="stylesheet" type="text/css"/>'.
format(href))
elif mt in OEB_DOCS:
self.insert_hyperlink(href, name)
return
if md.hasImage():
img = md.imageData()
if img.isValid():
data = image_to_data(img, fmt='PNG')
name = add_file(get_name('dropped_image.png', data))
self.insert_image(get_href(name))
return
if md.hasHtml():
insert_text(md.html())
return
if md.hasText():
return insert_text(md.text())
@dynamic_property
def is_modified(self):
''' True if the document has been modified since it was loaded or since
the last time is_modified was set to False. '''
def fget(self):
return self.document().isModified()
def fset(self, val):
self.document().setModified(bool(val))
return property(fget=fget, fset=fset)
def sizeHint(self):
return self.size_hint
def apply_settings(self, prefs=None, dictionaries_changed=False): # {{{
prefs = prefs or tprefs
self.setAcceptDrops(prefs.get('editor_accepts_drops', True))
self.setLineWrapMode(
QPlainTextEdit.WidgetWidth
if prefs['editor_line_wrap'] else QPlainTextEdit.NoWrap)
theme = get_theme(prefs['editor_theme'])
self.apply_theme(theme)
w = self.fontMetrics()
self.space_width = w.width(' ')
self.tw = self.smarts.override_tab_stop_width if self.smarts.override_tab_stop_width is not None else prefs[
'editor_tab_stop_width']
self.setTabStopWidth(self.tw * self.space_width)
if dictionaries_changed:
self.highlighter.rehighlight()
def apply_theme(self, theme):
self.theme = theme
pal = self.palette()
pal.setColor(pal.Base, theme_color(theme, 'Normal', 'bg'))
pal.setColor(pal.AlternateBase, theme_color(theme, 'CursorLine', 'bg'))
pal.setColor(pal.Text, theme_color(theme, 'Normal', 'fg'))
pal.setColor(pal.Highlight, theme_color(theme, 'Visual', 'bg'))
pal.setColor(pal.HighlightedText, theme_color(theme, 'Visual', 'fg'))
self.setPalette(pal)
self.tooltip_palette = pal = QPalette()
pal.setColor(pal.ToolTipBase, theme_color(theme, 'Tooltip', 'bg'))
pal.setColor(pal.ToolTipText, theme_color(theme, 'Tooltip', 'fg'))
self.line_number_palette = pal = QPalette()
pal.setColor(pal.Base, theme_color(theme, 'LineNr', 'bg'))
pal.setColor(pal.Text, theme_color(theme, 'LineNr', 'fg'))
pal.setColor(pal.BrightText, theme_color(theme, 'LineNrC', 'fg'))
self.match_paren_format = theme_format(theme, 'MatchParen')
font = self.font()
ff = tprefs['editor_font_family']
if ff is None:
ff = default_font_family()
font.setFamily(ff)
font.setPointSize(tprefs['editor_font_size'])
self.tooltip_font = QFont(font)
self.tooltip_font.setPointSize(font.pointSize() - 1)
self.setFont(font)
self.highlighter.apply_theme(theme)
w = self.fontMetrics()
self.number_width = max(map(lambda x: w.width(str(x)), xrange(10)))
self.size_hint = QSize(
self.expected_geometry[0] * w.averageCharWidth(),
self.expected_geometry[1] * w.height())
self.highlight_color = theme_color(theme, 'HighlightRegion', 'bg')
self.highlight_cursor_line()
self.completion_popup.clear_caches(), self.completion_popup.update()
# }}}
def load_text(self,
text,
syntax='html',
process_template=False,
doc_name=None):
self.syntax = syntax
self.highlighter = get_highlighter(syntax)()
self.highlighter.apply_theme(self.theme)
self.highlighter.set_document(self.document(), doc_name=doc_name)
sclass = get_smarts(syntax)
if sclass is not None:
self.smarts = sclass(self)
if self.smarts.override_tab_stop_width is not None:
self.tw = self.smarts.override_tab_stop_width
self.setTabStopWidth(self.tw * self.space_width)
self.setPlainText(unicodedata.normalize('NFC', unicode(text)))
if process_template and QPlainTextEdit.find(self, '%CURSOR%'):
c = self.textCursor()
c.insertText('')
def change_document_name(self, newname):
self.highlighter.doc_name = newname
self.highlighter.rehighlight(
) # Ensure links are checked w.r.t. the new name correctly
def replace_text(self, text):
c = self.textCursor()
pos = c.position()
c.beginEditBlock()
c.clearSelection()
c.select(c.Document)
c.insertText(unicodedata.normalize('NFC', text))
c.endEditBlock()
c.setPosition(min(pos, len(text)))
self.setTextCursor(c)
self.ensureCursorVisible()
def simple_replace(self, text, cursor=None):
c = cursor or self.textCursor()
c.insertText(unicodedata.normalize('NFC', text))
self.setTextCursor(c)
def go_to_line(self, lnum, col=None):
lnum = max(1, min(self.blockCount(), lnum))
c = self.textCursor()
c.clearSelection()
c.movePosition(c.Start)
c.movePosition(c.NextBlock, n=lnum - 1)
c.movePosition(c.StartOfLine)
c.movePosition(c.EndOfLine, c.KeepAnchor)
text = unicode(c.selectedText()).rstrip('\0')
if col is None:
c.movePosition(c.StartOfLine)
lt = text.lstrip()
if text and lt and lt != text:
c.movePosition(c.NextWord)
else:
c.setPosition(c.block().position() + col)
if c.blockNumber() + 1 > lnum:
# We have moved past the end of the line
c.setPosition(c.block().position())
c.movePosition(c.EndOfBlock)
self.setTextCursor(c)
self.ensureCursorVisible()
def update_extra_selections(self, instant=True):
sel = []
if self.current_cursor_line is not None:
sel.append(self.current_cursor_line)
if self.current_search_mark is not None:
sel.append(self.current_search_mark)
if instant and not self.highlighter.has_requests and self.smarts is not None:
sel.extend(self.smarts.get_extra_selections(self))
self.smart_highlighting_updated.emit()
else:
self.smarts_highlight_timer.start()
self.setExtraSelections(sel)
# Search and replace {{{
def mark_selected_text(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.highlight_color)
sel.cursor = self.textCursor()
if sel.cursor.hasSelection():
self.current_search_mark = sel
c = self.textCursor()
c.clearSelection()
self.setTextCursor(c)
else:
self.current_search_mark = None
self.update_extra_selections()
def find_in_marked(self, pat, wrap=False, save_match=None):
if self.current_search_mark is None:
return False
csm = self.current_search_mark.cursor
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
m_start = min(csm.position(), csm.anchor())
m_end = max(csm.position(), csm.anchor())
if c.position() < m_start:
c.setPosition(m_start)
if c.position() > m_end:
c.setPosition(m_end)
pos = m_start if reverse else m_end
if wrap:
pos = m_end if reverse else m_start
c.setPosition(pos, c.KeepAnchor)
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR,
'\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
start, end = m_start + start, m_start + end
else:
if reverse:
start, end = m_start + end, m_start + start
else:
start, end = c.anchor() + start, c.anchor() + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def all_in_marked(self, pat, template=None):
if self.current_search_mark is None:
return 0
c = self.current_search_mark.cursor
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR,
'\n').rstrip('\0')
if template is None:
count = len(pat.findall(raw))
else:
from calibre.gui2.tweak_book.function_replace import Function
repl_is_func = isinstance(template, Function)
if repl_is_func:
template.init_env()
raw, count = pat.subn(template, raw)
if repl_is_func:
from calibre.gui2.tweak_book.search import show_function_debug_output
if getattr(template.func, 'append_final_output_to_marked',
False):
retval = template.end()
if retval:
raw += unicode(retval)
else:
template.end()
show_function_debug_output(template)
if count > 0:
start_pos = min(c.anchor(), c.position())
c.insertText(raw)
end_pos = max(c.anchor(), c.position())
c.setPosition(start_pos), c.setPosition(end_pos, c.KeepAnchor)
self.update_extra_selections()
return count
def smart_comment(self):
from calibre.gui2.tweak_book.editor.comments import smart_comment
smart_comment(self, self.syntax)
def sort_css(self):
from calibre.gui2.dialogs.confirm_delete import confirm
if confirm(_(
'Sorting CSS rules can in rare cases change the effective styles applied to the book.'
' Are you sure you want to proceed?'),
'edit-book-confirm-sort-css',
parent=self,
config_set=tprefs):
c = self.textCursor()
c.beginEditBlock()
c.movePosition(c.Start), c.movePosition(c.End, c.KeepAnchor)
text = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR,
'\n').rstrip('\0')
from calibre.ebooks.oeb.polish.css import sort_sheet
text = sort_sheet(current_container(), text).cssText
c.insertText(text)
c.movePosition(c.Start)
c.endEditBlock()
self.setTextCursor(c)
def find(self,
pat,
wrap=False,
marked=False,
complete=False,
save_match=None):
if marked:
return self.find_in_marked(pat, wrap=wrap, save_match=save_match)
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
if complete:
# Search the entire text
c.movePosition(c.End if reverse else c.Start)
pos = c.Start if reverse else c.End
if wrap and not complete:
pos = c.End if reverse else c.Start
c.movePosition(pos, c.KeepAnchor)
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR,
'\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap and not complete:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
if reverse:
# Put the cursor at the start of the match
start, end = end, start
else:
textpos = c.anchor()
start, end = textpos + start, textpos + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def find_text(self, pat, wrap=False, complete=False):
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
if complete:
# Search the entire text
c.movePosition(c.End if reverse else c.Start)
pos = c.Start if reverse else c.End
if wrap and not complete:
pos = c.End if reverse else c.Start
c.movePosition(pos, c.KeepAnchor)
if hasattr(self.smarts, 'find_text'):
self.highlighter.join()
found, start, end = self.smarts.find_text(pat, c)
if not found:
return False
else:
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR,
'\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if reverse:
start, end = end, start
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
return True
def find_spell_word(self,
original_words,
lang,
from_cursor=True,
center_on_cursor=True):
c = self.textCursor()
c.setPosition(c.position())
if not from_cursor:
c.movePosition(c.Start)
c.movePosition(c.End, c.KeepAnchor)
def find_first_word(haystack):
match_pos, match_word = -1, None
for w in original_words:
idx = index_of(w, haystack, lang=lang)
if idx > -1 and (match_pos == -1 or match_pos > idx):
match_pos, match_word = idx, w
return match_pos, match_word
while True:
text = unicode(c.selectedText()).rstrip('\0')
idx, word = find_first_word(text)
if idx == -1:
return False
c.setPosition(c.anchor() + idx)
c.setPosition(c.position() + string_length(word), c.KeepAnchor)
if self.smarts.verify_for_spellcheck(c, self.highlighter):
self.highlighter.join() # Ensure highlighting is finished
locale = self.spellcheck_locale_for_cursor(c)
if not lang or not locale or (locale
and lang == locale.langcode):
self.setTextCursor(c)
if center_on_cursor:
self.centerCursor()
return True
c.setPosition(c.position())
c.movePosition(c.End, c.KeepAnchor)
return False
def find_next_spell_error(self, from_cursor=True):
c = self.textCursor()
if not from_cursor:
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY):
if not from_cursor or block.position(
) + r.start + r.length > c.position():
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
self.setTextCursor(c)
return True
block = block.next()
return False
def replace(self, pat, template, saved_match='gui'):
c = self.textCursor()
raw = unicode(c.selectedText()).replace(PARAGRAPH_SEPARATOR,
'\n').rstrip('\0')
m = pat.fullmatch(raw)
if m is None:
# This can happen if either the user changed the selected text or
# the search expression uses lookahead/lookbehind operators. See if
# the saved match matches the currently selected text and
# use it, if so.
if saved_match is not None and saved_match in self.saved_matches:
saved_pat, saved = self.saved_matches.pop(saved_match)
if saved_pat == pat and saved.group() == raw:
m = saved
if m is None:
return False
if callable(template):
text = template(m)
else:
text = m.expand(template)
c.insertText(text)
return True
def go_to_anchor(self, anchor):
if anchor is TOP:
c = self.textCursor()
c.movePosition(c.Start)
self.setTextCursor(c)
return True
base = r'''%%s\s*=\s*['"]{0,1}%s''' % regex.escape(anchor)
raw = unicode(self.toPlainText())
m = regex.search(base % 'id', raw)
if m is None:
m = regex.search(base % 'name', raw)
if m is not None:
c = self.textCursor()
c.setPosition(m.start())
self.setTextCursor(c)
return True
return False
# }}}
# Line numbers and cursor line {{{
def highlight_cursor_line(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.palette().alternateBase())
sel.format.setProperty(QTextFormat.FullWidthSelection, True)
sel.cursor = self.textCursor()
sel.cursor.clearSelection()
self.current_cursor_line = sel
self.update_extra_selections(instant=False)
# Update the cursor line's line number in the line number area
try:
self.line_number_area.update(0, self.last_current_lnum[0],
self.line_number_area.width(),
self.last_current_lnum[1])
except AttributeError:
pass
block = self.textCursor().block()
top = int(
self.blockBoundingGeometry(block).translated(
self.contentOffset()).top())
height = int(self.blockBoundingRect(block).height())
self.line_number_area.update(0, top, self.line_number_area.width(),
height)
def update_line_number_area_width(self, block_count=0):
self.gutter_width = self.line_number_area_width()
self.setViewportMargins(self.gutter_width, 0, 0, 0)
def line_number_area_width(self):
digits = 1
limit = max(1, self.blockCount())
while limit >= 10:
limit /= 10
digits += 1
return 8 + self.number_width * digits
def update_line_number_area(self, rect, dy):
if dy:
self.line_number_area.scroll(0, dy)
else:
self.line_number_area.update(0, rect.y(),
self.line_number_area.width(),
rect.height())
if rect.contains(self.viewport().rect()):
self.update_line_number_area_width()
def resizeEvent(self, ev):
QPlainTextEdit.resizeEvent(self, ev)
cr = self.contentsRect()
self.line_number_area.setGeometry(
QRect(cr.left(), cr.top(), self.line_number_area_width(),
cr.height()))
def paint_line_numbers(self, ev):
painter = QPainter(self.line_number_area)
painter.fillRect(ev.rect(),
self.line_number_palette.color(QPalette.Base))
block = self.firstVisibleBlock()
num = block.blockNumber()
top = int(
self.blockBoundingGeometry(block).translated(
self.contentOffset()).top())
bottom = top + int(self.blockBoundingRect(block).height())
current = self.textCursor().block().blockNumber()
painter.setPen(self.line_number_palette.color(QPalette.Text))
while block.isValid() and top <= ev.rect().bottom():
if block.isVisible() and bottom >= ev.rect().top():
if current == num:
painter.save()
painter.setPen(
self.line_number_palette.color(QPalette.BrightText))
f = QFont(self.font())
f.setBold(True)
painter.setFont(f)
self.last_current_lnum = (top, bottom - top)
painter.drawText(0, top,
self.line_number_area.width() - 5,
self.fontMetrics().height(), Qt.AlignRight,
str(num + 1))
if current == num:
painter.restore()
block = block.next()
top = bottom
bottom = top + int(self.blockBoundingRect(block).height())
num += 1
# }}}
def override_shortcut(self, ev):
# Let the global cut/copy/paste/undo/redo shortcuts work, this avoids the nbsp
# problem as well, since they use the overridden copy() method
# instead of the one from Qt, and allows proper customization
# of the shortcuts
if ev in (QKeySequence.Copy, QKeySequence.Cut, QKeySequence.Paste,
QKeySequence.Undo, QKeySequence.Redo):
ev.ignore()
return True
# This is used to convert typed hex codes into unicode
# characters
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
ev.accept()
return True
return PlainTextEdit.override_shortcut(self, ev)
def text_for_range(self, block, r):
c = self.textCursor()
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
return unicode(c.selectedText())
def spellcheck_locale_for_cursor(self, c):
with store_locale:
formats = self.highlighter.parse_single_block(c.block())[0]
pos = c.positionInBlock()
for r in formats:
if r.start <= pos <= r.start + r.length and r.format.property(
SPELL_PROPERTY):
return r.format.property(SPELL_LOCALE_PROPERTY)
def recheck_word(self, word, locale):
c = self.textCursor()
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY) and self.text_for_range(
block, r) == word:
self.highlighter.reformat_block(block)
break
block = block.next()
# Tooltips {{{
def syntax_range_for_cursor(self, cursor):
if cursor.isNull():
return
pos = cursor.positionInBlock()
for r in cursor.block().layout().additionalFormats():
if r.start <= pos <= r.start + r.length and r.format.property(
SYNTAX_PROPERTY):
return r
def syntax_format_for_cursor(self, cursor):
return getattr(self.syntax_range_for_cursor(cursor), 'format', None)
def show_tooltip(self, ev):
c = self.cursorForPosition(ev.pos())
fmt = self.syntax_format_for_cursor(c)
if fmt is not None:
tt = unicode(fmt.toolTip())
if tt:
QToolTip.setFont(self.tooltip_font)
QToolTip.setPalette(self.tooltip_palette)
QToolTip.showText(ev.globalPos(), textwrap.fill(tt))
return
QToolTip.hideText()
ev.ignore()
# }}}
def link_for_position(self, pos):
c = self.cursorForPosition(pos)
r = self.syntax_range_for_cursor(c)
if r is not None and r.format.property(LINK_PROPERTY):
return self.text_for_range(c.block(), r)
def mousePressEvent(self, ev):
if self.completion_popup.isVisible(
) and not self.completion_popup.rect().contains(ev.pos()):
# For some reason using eventFilter for this does not work, so we
# implement it here
self.completion_popup.abort()
if ev.modifiers() & Qt.CTRL:
url = self.link_for_position(ev.pos())
if url is not None:
ev.accept()
self.link_clicked.emit(url)
return
return PlainTextEdit.mousePressEvent(self, ev)
def get_range_inside_tag(self):
c = self.textCursor()
left = min(c.anchor(), c.position())
right = max(c.anchor(), c.position())
# For speed we use QPlainTextEdit's toPlainText as we dont care about
# spaces in this context
raw = unicode(QPlainTextEdit.toPlainText(self))
# Make sure the left edge is not within a <>
gtpos = raw.find('>', left)
ltpos = raw.find('<', left)
if gtpos < ltpos:
left = gtpos + 1 if gtpos > -1 else left
right = max(left, right)
if right != left:
gtpos = raw.find('>', right)
ltpos = raw.find('<', right)
if ltpos > gtpos:
ltpos = raw.rfind('<', left, right + 1)
right = max(ltpos, left)
return left, right
def format_text(self, formatting):
if self.syntax != 'html':
return
if formatting.startswith('justify_'):
return self.smarts.set_text_alignment(
self,
formatting.partition('_')[-1])
color = 'currentColor'
if formatting in {'color', 'background-color'}:
color = QColorDialog.getColor(
QColor(Qt.black if formatting == 'color' else Qt.white), self,
_('Choose color'), QColorDialog.ShowAlphaChannel)
if not color.isValid():
return
r, g, b, a = color.getRgb()
if a == 255:
color = 'rgb(%d, %d, %d)' % (r, g, b)
else:
color = 'rgba(%d, %d, %d, %.2g)' % (r, g, b, a / 255)
prefix, suffix = {
'bold': ('<b>', '</b>'),
'italic': ('<i>', '</i>'),
'underline': ('<u>', '</u>'),
'strikethrough': ('<strike>', '</strike>'),
'superscript': ('<sup>', '</sup>'),
'subscript': ('<sub>', '</sub>'),
'color': ('<span style="color: %s">' % color, '</span>'),
'background-color':
('<span style="background-color: %s">' % color, '</span>'),
}[formatting]
left, right = self.get_range_inside_tag()
c = self.textCursor()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
prev_text = unicode(c.selectedText()).rstrip('\0')
c.insertText(prefix + prev_text + suffix)
if prev_text:
right = c.position()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
else:
c.setPosition(c.position() - len(suffix))
self.setTextCursor(c)
def insert_image(self, href, fullpage=False, preserve_aspect_ratio=False):
c = self.textCursor()
template, alt = 'url(%s)', ''
left = min(c.position(), c.anchor)
if self.syntax == 'html':
left, right = self.get_range_inside_tag()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
href = prepare_string_for_xml(href, True)
if fullpage:
template = '''\
<div style="page-break-before:always; page-break-after:always; page-break-inside:avoid">\
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" \
version="1.1" width="100%%" height="100%%" viewBox="0 0 1200 1600" preserveAspectRatio="{}">\
<image width="1200" height="1600" xlink:href="%s"/>\
</svg></div>'''.format('xMidYMid meet' if preserve_aspect_ratio else 'none')
else:
alt = _('Image')
template = '<img alt="{0}" src="%s" />'.format(alt)
text = template % href
c.insertText(text)
if self.syntax == 'html' and not fullpage:
c.setPosition(left + 10)
c.setPosition(c.position() + len(alt), c.KeepAnchor)
else:
c.setPosition(left)
c.setPosition(left + len(text), c.KeepAnchor)
self.setTextCursor(c)
def insert_hyperlink(self, target, text):
if hasattr(self.smarts, 'insert_hyperlink'):
self.smarts.insert_hyperlink(self, target, text)
def insert_tag(self, tag):
if hasattr(self.smarts, 'insert_tag'):
self.smarts.insert_tag(self, tag)
def keyPressEvent(self, ev):
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
if self.replace_possible_unicode_sequence():
ev.accept()
return
if ev.key() == Qt.Key_Insert:
self.setOverwriteMode(self.overwriteMode() ^ True)
ev.accept()
return
if self.snippet_manager.handle_key_press(ev):
self.completion_popup.hide()
return
if self.smarts.handle_key_press(ev, self):
self.handle_keypress_completion(ev)
return
QPlainTextEdit.keyPressEvent(self, ev)
self.handle_keypress_completion(ev)
def handle_keypress_completion(self, ev):
if self.request_completion is None:
return
code = ev.key()
if code in (0, Qt.Key_unknown, Qt.Key_Shift, Qt.Key_Control,
Qt.Key_Alt, Qt.Key_Meta, Qt.Key_AltGr, Qt.Key_CapsLock,
Qt.Key_NumLock, Qt.Key_ScrollLock, Qt.Key_Up, Qt.Key_Down):
# We ignore up/down arrow so as to not break scrolling through the
# text with the arrow keys
return
result = self.smarts.get_completion_data(self, ev)
if result is None:
self.last_completion_request += 1
else:
self.last_completion_request = self.request_completion(*result)
self.completion_popup.mark_completion(
self, None if result is None else result[-1])
def handle_completion_result(self, result):
if result.request_id[0] >= self.last_completion_request:
self.completion_popup.handle_result(result)
def clear_completion_cache(self):
if self.request_completion is not None and self.completion_doc_name:
self.request_completion(None, 'file:' + self.completion_doc_name)
def replace_possible_unicode_sequence(self):
c = self.textCursor()
has_selection = c.hasSelection()
if has_selection:
text = unicode(c.selectedText()).rstrip('\0')
else:
c.setPosition(c.position() - min(c.positionInBlock(), 6),
c.KeepAnchor)
text = unicode(c.selectedText()).rstrip('\0')
m = re.search(r'[a-fA-F0-9]{2,6}$', text)
if m is None:
return False
text = m.group()
try:
num = int(text, 16)
except ValueError:
return False
if num > 0x10ffff or num < 1:
return False
end_pos = max(c.anchor(), c.position())
c.setPosition(end_pos - len(text)), c.setPosition(
end_pos, c.KeepAnchor)
c.insertText(safe_chr(num))
return True
def select_all(self):
c = self.textCursor()
c.clearSelection()
c.setPosition(0)
c.movePosition(c.End, c.KeepAnchor)
self.setTextCursor(c)
def rename_block_tag(self, new_name):
if hasattr(self.smarts, 'rename_block_tag'):
self.smarts.rename_block_tag(self, new_name)
def current_tag(self, for_position_sync=True):
return self.smarts.cursor_position_with_sourceline(
self.textCursor(), for_position_sync=for_position_sync)
def goto_sourceline(self, sourceline, tags, attribute=None):
return self.smarts.goto_sourceline(self,
sourceline,
tags,
attribute=attribute)
def get_tag_contents(self):
c = self.smarts.get_inner_HTML(self)
if c is not None:
return self.selected_text_from_cursor(c)
def goto_css_rule(self, rule_address, sourceline_address=None):
from calibre.gui2.tweak_book.editor.smarts.css import find_rule
block = None
if self.syntax == 'css':
raw = unicode(self.toPlainText())
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(line - 1)
elif sourceline_address is not None:
sourceline, tags = sourceline_address
if self.goto_sourceline(sourceline, tags):
c = self.textCursor()
c.setPosition(c.position() + 1)
self.setTextCursor(c)
raw = self.get_tag_contents()
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(c.blockNumber() +
line - 1)
if block is not None and block.isValid():
c = self.textCursor()
c.setPosition(block.position() + col)
self.setTextCursor(c)
def change_case(self, action, cursor=None):
cursor = cursor or self.textCursor()
text = self.selected_text_from_cursor(cursor)
text = {
'lower': lower,
'upper': upper,
'capitalize': capitalize,
'title': titlecase,
'swap': swapcase
}[action](text)
cursor.insertText(text)
self.setTextCursor(cursor)
class TextEdit(PlainTextEdit):
link_clicked = pyqtSignal(object)
smart_highlighting_updated = pyqtSignal()
def __init__(self, parent=None, expected_geometry=(100, 50)):
PlainTextEdit.__init__(self, parent)
self.snippet_manager = SnippetManager(self)
self.completion_popup = CompletionPopup(self)
self.request_completion = self.completion_doc_name = None
self.clear_completion_cache_timer = t = QTimer(self)
t.setInterval(5000), t.timeout.connect(self.clear_completion_cache), t.setSingleShot(True)
self.textChanged.connect(t.start)
self.last_completion_request = -1
self.gutter_width = 0
self.tw = 2
self.expected_geometry = expected_geometry
self.saved_matches = {}
self.syntax = None
self.smarts = NullSmarts(self)
self.current_cursor_line = None
self.current_search_mark = None
self.smarts_highlight_timer = t = QTimer()
t.setInterval(750), t.setSingleShot(True), t.timeout.connect(self.update_extra_selections)
self.highlighter = SyntaxHighlighter()
self.line_number_area = LineNumbers(self)
self.apply_settings()
self.setMouseTracking(True)
self.cursorPositionChanged.connect(self.highlight_cursor_line)
self.blockCountChanged[int].connect(self.update_line_number_area_width)
self.updateRequest.connect(self.update_line_number_area)
def get_droppable_files(self, md):
def is_mt_ok(mt):
return self.syntax == 'html' and (
mt in OEB_DOCS or mt in OEB_STYLES or mt.startswith('image/')
)
if md.hasFormat(CONTAINER_DND_MIMETYPE):
for line in as_unicode(bytes(md.data(CONTAINER_DND_MIMETYPE))).splitlines():
mt = current_container().mime_map.get(line, 'application/octet-stream')
if is_mt_ok(mt):
yield line, mt, True
return
for qurl in md.urls():
if qurl.isLocalFile() and os.access(qurl.toLocalFile(), os.R_OK):
path = qurl.toLocalFile()
mt = guess_type(path)
if is_mt_ok(mt):
yield path, mt, False
def canInsertFromMimeData(self, md):
if md.hasText() or (md.hasHtml() and self.syntax == 'html') or md.hasImage():
return True
elif tuple(self.get_droppable_files(md)):
return True
return False
def insertFromMimeData(self, md):
files = tuple(self.get_droppable_files(md))
base = self.highlighter.doc_name or None
def get_name(name):
folder = get_recommended_folders(current_container(), (name,))[name] or ''
if folder:
folder += '/'
return folder + name
def get_href(name):
return current_container().name_to_href(name, base)
def insert_text(text):
c = self.textCursor()
c.insertText(text)
self.setTextCursor(c)
self.ensureCursorVisible()
def add_file(name, data, mt=None):
from calibre.gui2.tweak_book.boss import get_boss
name = current_container().add_file(name, data, media_type=mt, modify_name_if_needed=True)
get_boss().refresh_file_list()
return name
if files:
for path, mt, is_name in files:
if is_name:
name = path
else:
name = get_name(os.path.basename(path))
with lopen(path, 'rb') as f:
name = add_file(name, f.read(), mt)
href = get_href(name)
if mt.startswith('image/'):
self.insert_image(href)
elif mt in OEB_STYLES:
insert_text('<link href="{}" rel="stylesheet" type="text/css"/>'.format(href))
elif mt in OEB_DOCS:
self.insert_hyperlink(href, name)
self.ensureCursorVisible()
return
if md.hasImage():
img = md.imageData()
if img is not None and not img.isNull():
data = image_to_data(img, fmt='PNG')
name = add_file(get_name('dropped_image.png'), data)
self.insert_image(get_href(name))
self.ensureCursorVisible()
return
if md.hasText():
return insert_text(md.text())
if md.hasHtml():
insert_text(md.html())
return
@property
def is_modified(self):
''' True if the document has been modified since it was loaded or since
the last time is_modified was set to False. '''
return self.document().isModified()
@is_modified.setter
def is_modified(self, val):
self.document().setModified(bool(val))
def sizeHint(self):
return self.size_hint
def apply_settings(self, prefs=None, dictionaries_changed=False): # {{{
prefs = prefs or tprefs
self.setAcceptDrops(prefs.get('editor_accepts_drops', True))
self.setLineWrapMode(QPlainTextEdit.WidgetWidth if prefs['editor_line_wrap'] else QPlainTextEdit.NoWrap)
theme = get_theme(prefs['editor_theme'])
self.apply_theme(theme)
w = self.fontMetrics()
self.space_width = w.width(' ')
self.tw = self.smarts.override_tab_stop_width if self.smarts.override_tab_stop_width is not None else prefs['editor_tab_stop_width']
self.setTabStopWidth(self.tw * self.space_width)
if dictionaries_changed:
self.highlighter.rehighlight()
def apply_theme(self, theme):
self.theme = theme
pal = self.palette()
pal.setColor(pal.Base, theme_color(theme, 'Normal', 'bg'))
pal.setColor(pal.AlternateBase, theme_color(theme, 'CursorLine', 'bg'))
pal.setColor(pal.Text, theme_color(theme, 'Normal', 'fg'))
pal.setColor(pal.Highlight, theme_color(theme, 'Visual', 'bg'))
pal.setColor(pal.HighlightedText, theme_color(theme, 'Visual', 'fg'))
self.setPalette(pal)
self.tooltip_palette = pal = QPalette()
pal.setColor(pal.ToolTipBase, theme_color(theme, 'Tooltip', 'bg'))
pal.setColor(pal.ToolTipText, theme_color(theme, 'Tooltip', 'fg'))
self.line_number_palette = pal = QPalette()
pal.setColor(pal.Base, theme_color(theme, 'LineNr', 'bg'))
pal.setColor(pal.Text, theme_color(theme, 'LineNr', 'fg'))
pal.setColor(pal.BrightText, theme_color(theme, 'LineNrC', 'fg'))
self.match_paren_format = theme_format(theme, 'MatchParen')
font = self.font()
ff = tprefs['editor_font_family']
if ff is None:
ff = default_font_family()
font.setFamily(ff)
font.setPointSize(tprefs['editor_font_size'])
self.tooltip_font = QFont(font)
self.tooltip_font.setPointSize(font.pointSize() - 1)
self.setFont(font)
self.highlighter.apply_theme(theme)
w = self.fontMetrics()
self.number_width = max(map(lambda x:w.width(unicode_type(x)), range(10)))
self.size_hint = QSize(self.expected_geometry[0] * w.averageCharWidth(), self.expected_geometry[1] * w.height())
self.highlight_color = theme_color(theme, 'HighlightRegion', 'bg')
self.highlight_cursor_line()
self.completion_popup.clear_caches(), self.completion_popup.update()
# }}}
def load_text(self, text, syntax='html', process_template=False, doc_name=None):
self.syntax = syntax
self.highlighter = get_highlighter(syntax)()
self.highlighter.apply_theme(self.theme)
self.highlighter.set_document(self.document(), doc_name=doc_name)
sclass = get_smarts(syntax)
if sclass is not None:
self.smarts = sclass(self)
if self.smarts.override_tab_stop_width is not None:
self.tw = self.smarts.override_tab_stop_width
self.setTabStopWidth(self.tw * self.space_width)
self.setPlainText(unicodedata.normalize('NFC', unicode_type(text)))
if process_template and QPlainTextEdit.find(self, '%CURSOR%'):
c = self.textCursor()
c.insertText('')
def change_document_name(self, newname):
self.highlighter.doc_name = newname
self.highlighter.rehighlight() # Ensure links are checked w.r.t. the new name correctly
def replace_text(self, text):
c = self.textCursor()
pos = c.position()
c.beginEditBlock()
c.clearSelection()
c.select(c.Document)
c.insertText(unicodedata.normalize('NFC', text))
c.endEditBlock()
c.setPosition(min(pos, len(text)))
self.setTextCursor(c)
self.ensureCursorVisible()
def simple_replace(self, text, cursor=None):
c = cursor or self.textCursor()
c.insertText(unicodedata.normalize('NFC', text))
self.setTextCursor(c)
def go_to_line(self, lnum, col=None):
lnum = max(1, min(self.blockCount(), lnum))
c = self.textCursor()
c.clearSelection()
c.movePosition(c.Start)
c.movePosition(c.NextBlock, n=lnum - 1)
c.movePosition(c.StartOfLine)
c.movePosition(c.EndOfLine, c.KeepAnchor)
text = unicode_type(c.selectedText()).rstrip('\0')
if col is None:
c.movePosition(c.StartOfLine)
lt = text.lstrip()
if text and lt and lt != text:
c.movePosition(c.NextWord)
else:
c.setPosition(c.block().position() + col)
if c.blockNumber() + 1 > lnum:
# We have moved past the end of the line
c.setPosition(c.block().position())
c.movePosition(c.EndOfBlock)
self.setTextCursor(c)
self.ensureCursorVisible()
def update_extra_selections(self, instant=True):
sel = []
if self.current_cursor_line is not None:
sel.append(self.current_cursor_line)
if self.current_search_mark is not None:
sel.append(self.current_search_mark)
if instant and not self.highlighter.has_requests and self.smarts is not None:
sel.extend(self.smarts.get_extra_selections(self))
self.smart_highlighting_updated.emit()
else:
self.smarts_highlight_timer.start()
self.setExtraSelections(sel)
# Search and replace {{{
def mark_selected_text(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.highlight_color)
sel.cursor = self.textCursor()
if sel.cursor.hasSelection():
self.current_search_mark = sel
c = self.textCursor()
c.clearSelection()
self.setTextCursor(c)
else:
self.current_search_mark = None
self.update_extra_selections()
def find_in_marked(self, pat, wrap=False, save_match=None):
if self.current_search_mark is None:
return False
csm = self.current_search_mark.cursor
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
m_start = min(csm.position(), csm.anchor())
m_end = max(csm.position(), csm.anchor())
if c.position() < m_start:
c.setPosition(m_start)
if c.position() > m_end:
c.setPosition(m_end)
pos = m_start if reverse else m_end
if wrap:
pos = m_end if reverse else m_start
c.setPosition(pos, c.KeepAnchor)
raw = unicode_type(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
start, end = m_start + start, m_start + end
else:
if reverse:
start, end = m_start + end, m_start + start
else:
start, end = c.anchor() + start, c.anchor() + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def all_in_marked(self, pat, template=None):
if self.current_search_mark is None:
return 0
c = self.current_search_mark.cursor
raw = unicode_type(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
if template is None:
count = len(pat.findall(raw))
else:
from calibre.gui2.tweak_book.function_replace import Function
repl_is_func = isinstance(template, Function)
if repl_is_func:
template.init_env()
raw, count = pat.subn(template, raw)
if repl_is_func:
from calibre.gui2.tweak_book.search import show_function_debug_output
if getattr(template.func, 'append_final_output_to_marked', False):
retval = template.end()
if retval:
raw += unicode_type(retval)
else:
template.end()
show_function_debug_output(template)
if count > 0:
start_pos = min(c.anchor(), c.position())
c.insertText(raw)
end_pos = max(c.anchor(), c.position())
c.setPosition(start_pos), c.setPosition(end_pos, c.KeepAnchor)
self.update_extra_selections()
return count
def smart_comment(self):
from calibre.gui2.tweak_book.editor.comments import smart_comment
smart_comment(self, self.syntax)
def sort_css(self):
from calibre.gui2.dialogs.confirm_delete import confirm
if confirm(_('Sorting CSS rules can in rare cases change the effective styles applied to the book.'
' Are you sure you want to proceed?'), 'edit-book-confirm-sort-css', parent=self, config_set=tprefs):
c = self.textCursor()
c.beginEditBlock()
c.movePosition(c.Start), c.movePosition(c.End, c.KeepAnchor)
text = unicode_type(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
from calibre.ebooks.oeb.polish.css import sort_sheet
text = css_text(sort_sheet(current_container(), text))
c.insertText(text)
c.movePosition(c.Start)
c.endEditBlock()
self.setTextCursor(c)
def find(self, pat, wrap=False, marked=False, complete=False, save_match=None):
if marked:
return self.find_in_marked(pat, wrap=wrap, save_match=save_match)
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
if complete:
# Search the entire text
c.movePosition(c.End if reverse else c.Start)
pos = c.Start if reverse else c.End
if wrap and not complete:
pos = c.End if reverse else c.Start
c.movePosition(pos, c.KeepAnchor)
raw = unicode_type(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if wrap and not complete:
if reverse:
textpos = c.anchor()
start, end = textpos + end, textpos + start
else:
if reverse:
# Put the cursor at the start of the match
start, end = end, start
else:
textpos = c.anchor()
start, end = textpos + start, textpos + end
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
if save_match is not None:
self.saved_matches[save_match] = (pat, m)
return True
def find_text(self, pat, wrap=False, complete=False):
reverse = pat.flags & regex.REVERSE
c = self.textCursor()
c.clearSelection()
if complete:
# Search the entire text
c.movePosition(c.End if reverse else c.Start)
pos = c.Start if reverse else c.End
if wrap and not complete:
pos = c.End if reverse else c.Start
c.movePosition(pos, c.KeepAnchor)
if hasattr(self.smarts, 'find_text'):
self.highlighter.join()
found, start, end = self.smarts.find_text(pat, c)
if not found:
return False
else:
raw = unicode_type(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.search(raw)
if m is None:
return False
start, end = m.span()
if start == end:
return False
if reverse:
start, end = end, start
c.clearSelection()
c.setPosition(start)
c.setPosition(end, c.KeepAnchor)
self.setTextCursor(c)
# Center search result on screen
self.centerCursor()
return True
def find_spell_word(self, original_words, lang, from_cursor=True, center_on_cursor=True):
c = self.textCursor()
c.setPosition(c.position())
if not from_cursor:
c.movePosition(c.Start)
c.movePosition(c.End, c.KeepAnchor)
def find_first_word(haystack):
match_pos, match_word = -1, None
for w in original_words:
idx = index_of(w, haystack, lang=lang)
if idx > -1 and (match_pos == -1 or match_pos > idx):
match_pos, match_word = idx, w
return match_pos, match_word
while True:
text = unicode_type(c.selectedText()).rstrip('\0')
idx, word = find_first_word(text)
if idx == -1:
return False
c.setPosition(c.anchor() + idx)
c.setPosition(c.position() + string_length(word), c.KeepAnchor)
if self.smarts.verify_for_spellcheck(c, self.highlighter):
self.highlighter.join() # Ensure highlighting is finished
locale = self.spellcheck_locale_for_cursor(c)
if not lang or not locale or (locale and lang == locale.langcode):
self.setTextCursor(c)
if center_on_cursor:
self.centerCursor()
return True
c.setPosition(c.position())
c.movePosition(c.End, c.KeepAnchor)
return False
def find_next_spell_error(self, from_cursor=True):
c = self.textCursor()
if not from_cursor:
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY):
if not from_cursor or block.position() + r.start + r.length > c.position():
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
self.setTextCursor(c)
return True
block = block.next()
return False
def replace(self, pat, template, saved_match='gui'):
c = self.textCursor()
raw = unicode_type(c.selectedText()).replace(PARAGRAPH_SEPARATOR, '\n').rstrip('\0')
m = pat.fullmatch(raw)
if m is None:
# This can happen if either the user changed the selected text or
# the search expression uses lookahead/lookbehind operators. See if
# the saved match matches the currently selected text and
# use it, if so.
if saved_match is not None and saved_match in self.saved_matches:
saved_pat, saved = self.saved_matches.pop(saved_match)
if saved_pat == pat and saved.group() == raw:
m = saved
if m is None:
return False
if callable(template):
text = template(m)
else:
text = m.expand(template)
c.insertText(text)
return True
def go_to_anchor(self, anchor):
if anchor is TOP:
c = self.textCursor()
c.movePosition(c.Start)
self.setTextCursor(c)
return True
base = r'''%%s\s*=\s*['"]{0,1}%s''' % regex.escape(anchor)
raw = unicode_type(self.toPlainText())
m = regex.search(base % 'id', raw)
if m is None:
m = regex.search(base % 'name', raw)
if m is not None:
c = self.textCursor()
c.setPosition(m.start())
self.setTextCursor(c)
return True
return False
# }}}
# Line numbers and cursor line {{{
def highlight_cursor_line(self):
sel = QTextEdit.ExtraSelection()
sel.format.setBackground(self.palette().alternateBase())
sel.format.setProperty(QTextFormat.FullWidthSelection, True)
sel.cursor = self.textCursor()
sel.cursor.clearSelection()
self.current_cursor_line = sel
self.update_extra_selections(instant=False)
# Update the cursor line's line number in the line number area
try:
self.line_number_area.update(0, self.last_current_lnum[0], self.line_number_area.width(), self.last_current_lnum[1])
except AttributeError:
pass
block = self.textCursor().block()
top = int(self.blockBoundingGeometry(block).translated(self.contentOffset()).top())
height = int(self.blockBoundingRect(block).height())
self.line_number_area.update(0, top, self.line_number_area.width(), height)
def update_line_number_area_width(self, block_count=0):
self.gutter_width = self.line_number_area_width()
self.setViewportMargins(self.gutter_width, 0, 0, 0)
def line_number_area_width(self):
digits = 1
limit = max(1, self.blockCount())
while limit >= 10:
limit /= 10
digits += 1
return 8 + self.number_width * digits
def update_line_number_area(self, rect, dy):
if dy:
self.line_number_area.scroll(0, dy)
else:
self.line_number_area.update(0, rect.y(), self.line_number_area.width(), rect.height())
if rect.contains(self.viewport().rect()):
self.update_line_number_area_width()
def resizeEvent(self, ev):
QPlainTextEdit.resizeEvent(self, ev)
cr = self.contentsRect()
self.line_number_area.setGeometry(QRect(cr.left(), cr.top(), self.line_number_area_width(), cr.height()))
def paint_line_numbers(self, ev):
painter = QPainter(self.line_number_area)
painter.fillRect(ev.rect(), self.line_number_palette.color(QPalette.Base))
block = self.firstVisibleBlock()
num = block.blockNumber()
top = int(self.blockBoundingGeometry(block).translated(self.contentOffset()).top())
bottom = top + int(self.blockBoundingRect(block).height())
current = self.textCursor().block().blockNumber()
painter.setPen(self.line_number_palette.color(QPalette.Text))
while block.isValid() and top <= ev.rect().bottom():
if block.isVisible() and bottom >= ev.rect().top():
if current == num:
painter.save()
painter.setPen(self.line_number_palette.color(QPalette.BrightText))
f = QFont(self.font())
f.setBold(True)
painter.setFont(f)
self.last_current_lnum = (top, bottom - top)
painter.drawText(0, top, self.line_number_area.width() - 5, self.fontMetrics().height(),
Qt.AlignRight, unicode_type(num + 1))
if current == num:
painter.restore()
block = block.next()
top = bottom
bottom = top + int(self.blockBoundingRect(block).height())
num += 1
# }}}
def override_shortcut(self, ev):
# Let the global cut/copy/paste/undo/redo shortcuts work, this avoids the nbsp
# problem as well, since they use the overridden createMimeDataFromSelection() method
# instead of the one from Qt (which makes copy() work), and allows proper customization
# of the shortcuts
if ev in (QKeySequence.Copy, QKeySequence.Cut, QKeySequence.Paste, QKeySequence.Undo, QKeySequence.Redo):
ev.ignore()
return True
# This is used to convert typed hex codes into unicode
# characters
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
ev.accept()
return True
return PlainTextEdit.override_shortcut(self, ev)
def text_for_range(self, block, r):
c = self.textCursor()
c.setPosition(block.position() + r.start)
c.setPosition(c.position() + r.length, c.KeepAnchor)
return unicode_type(c.selectedText())
def spellcheck_locale_for_cursor(self, c):
with store_locale:
formats = self.highlighter.parse_single_block(c.block())[0]
pos = c.positionInBlock()
for r in formats:
if r.start <= pos <= r.start + r.length and r.format.property(SPELL_PROPERTY):
return r.format.property(SPELL_LOCALE_PROPERTY)
def recheck_word(self, word, locale):
c = self.textCursor()
c.movePosition(c.Start)
block = c.block()
while block.isValid():
for r in block.layout().additionalFormats():
if r.format.property(SPELL_PROPERTY) and self.text_for_range(block, r) == word:
self.highlighter.reformat_block(block)
break
block = block.next()
# Tooltips {{{
def syntax_range_for_cursor(self, cursor):
if cursor.isNull():
return
pos = cursor.positionInBlock()
for r in cursor.block().layout().additionalFormats():
if r.start <= pos <= r.start + r.length and r.format.property(SYNTAX_PROPERTY):
return r
def syntax_format_for_cursor(self, cursor):
return getattr(self.syntax_range_for_cursor(cursor), 'format', None)
def show_tooltip(self, ev):
c = self.cursorForPosition(ev.pos())
fmt = self.syntax_format_for_cursor(c)
if fmt is not None:
tt = unicode_type(fmt.toolTip())
if tt:
QToolTip.setFont(self.tooltip_font)
QToolTip.setPalette(self.tooltip_palette)
QToolTip.showText(ev.globalPos(), textwrap.fill(tt))
return
QToolTip.hideText()
ev.ignore()
# }}}
def link_for_position(self, pos):
c = self.cursorForPosition(pos)
r = self.syntax_range_for_cursor(c)
if r is not None and r.format.property(LINK_PROPERTY):
return self.text_for_range(c.block(), r)
def mousePressEvent(self, ev):
if self.completion_popup.isVisible() and not self.completion_popup.rect().contains(ev.pos()):
# For some reason using eventFilter for this does not work, so we
# implement it here
self.completion_popup.abort()
if ev.modifiers() & Qt.CTRL:
url = self.link_for_position(ev.pos())
if url is not None:
ev.accept()
self.link_clicked.emit(url)
return
return PlainTextEdit.mousePressEvent(self, ev)
def get_range_inside_tag(self):
c = self.textCursor()
left = min(c.anchor(), c.position())
right = max(c.anchor(), c.position())
# For speed we use QPlainTextEdit's toPlainText as we dont care about
# spaces in this context
raw = unicode_type(QPlainTextEdit.toPlainText(self))
# Make sure the left edge is not within a <>
gtpos = raw.find('>', left)
ltpos = raw.find('<', left)
if gtpos < ltpos:
left = gtpos + 1 if gtpos > -1 else left
right = max(left, right)
if right != left:
gtpos = raw.find('>', right)
ltpos = raw.find('<', right)
if ltpos > gtpos:
ltpos = raw.rfind('<', left, right+1)
right = max(ltpos, left)
return left, right
def format_text(self, formatting):
if self.syntax != 'html':
return
if formatting.startswith('justify_'):
return self.smarts.set_text_alignment(self, formatting.partition('_')[-1])
color = 'currentColor'
if formatting in {'color', 'background-color'}:
color = QColorDialog.getColor(QColor(Qt.black if formatting == 'color' else Qt.white), self, _('Choose color'), QColorDialog.ShowAlphaChannel)
if not color.isValid():
return
r, g, b, a = color.getRgb()
if a == 255:
color = 'rgb(%d, %d, %d)' % (r, g, b)
else:
color = 'rgba(%d, %d, %d, %.2g)' % (r, g, b, a/255)
prefix, suffix = {
'bold': ('<b>', '</b>'),
'italic': ('<i>', '</i>'),
'underline': ('<u>', '</u>'),
'strikethrough': ('<strike>', '</strike>'),
'superscript': ('<sup>', '</sup>'),
'subscript': ('<sub>', '</sub>'),
'color': ('<span style="color: %s">' % color, '</span>'),
'background-color': ('<span style="background-color: %s">' % color, '</span>'),
}[formatting]
left, right = self.get_range_inside_tag()
c = self.textCursor()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
prev_text = unicode_type(c.selectedText()).rstrip('\0')
c.insertText(prefix + prev_text + suffix)
if prev_text:
right = c.position()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
else:
c.setPosition(c.position() - len(suffix))
self.setTextCursor(c)
def insert_image(self, href, fullpage=False, preserve_aspect_ratio=False, width=-1, height=-1):
if width <= 0:
width = 1200
if height <= 0:
height = 1600
c = self.textCursor()
template, alt = 'url(%s)', ''
left = min(c.position(), c.anchor)
if self.syntax == 'html':
left, right = self.get_range_inside_tag()
c.setPosition(left)
c.setPosition(right, c.KeepAnchor)
href = prepare_string_for_xml(href, True)
if fullpage:
template = '''\
<div style="page-break-before:always; page-break-after:always; page-break-inside:avoid">\
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" \
version="1.1" width="100%%" height="100%%" viewBox="0 0 {w} {h}" preserveAspectRatio="{a}">\
<image width="{w}" height="{h}" xlink:href="%s"/>\
</svg></div>'''.format(w=width, h=height, a='xMidYMid meet' if preserve_aspect_ratio else 'none')
else:
alt = _('Image')
template = '<img alt="{0}" src="%s" />'.format(alt)
text = template % href
c.insertText(text)
if self.syntax == 'html' and not fullpage:
c.setPosition(left + 10)
c.setPosition(c.position() + len(alt), c.KeepAnchor)
else:
c.setPosition(left)
c.setPosition(left + len(text), c.KeepAnchor)
self.setTextCursor(c)
def insert_hyperlink(self, target, text, template=None):
if hasattr(self.smarts, 'insert_hyperlink'):
self.smarts.insert_hyperlink(self, target, text, template=template)
def insert_tag(self, tag):
if hasattr(self.smarts, 'insert_tag'):
self.smarts.insert_tag(self, tag)
def remove_tag(self):
if hasattr(self.smarts, 'remove_tag'):
self.smarts.remove_tag(self)
def keyPressEvent(self, ev):
if ev.key() == Qt.Key_X and ev.modifiers() == Qt.AltModifier:
if self.replace_possible_unicode_sequence():
ev.accept()
return
if ev.key() == Qt.Key_Insert:
self.setOverwriteMode(self.overwriteMode() ^ True)
ev.accept()
return
if self.snippet_manager.handle_key_press(ev):
self.completion_popup.hide()
return
if self.smarts.handle_key_press(ev, self):
self.handle_keypress_completion(ev)
return
QPlainTextEdit.keyPressEvent(self, ev)
self.handle_keypress_completion(ev)
def handle_keypress_completion(self, ev):
if self.request_completion is None:
return
code = ev.key()
if code in (
0, Qt.Key_unknown, Qt.Key_Shift, Qt.Key_Control, Qt.Key_Alt,
Qt.Key_Meta, Qt.Key_AltGr, Qt.Key_CapsLock, Qt.Key_NumLock,
Qt.Key_ScrollLock, Qt.Key_Up, Qt.Key_Down):
# We ignore up/down arrow so as to not break scrolling through the
# text with the arrow keys
return
result = self.smarts.get_completion_data(self, ev)
if result is None:
self.last_completion_request += 1
else:
self.last_completion_request = self.request_completion(*result)
self.completion_popup.mark_completion(self, None if result is None else result[-1])
def handle_completion_result(self, result):
if result.request_id[0] >= self.last_completion_request:
self.completion_popup.handle_result(result)
def clear_completion_cache(self):
if self.request_completion is not None and self.completion_doc_name:
self.request_completion(None, 'file:' + self.completion_doc_name)
def replace_possible_unicode_sequence(self):
c = self.textCursor()
has_selection = c.hasSelection()
if has_selection:
text = unicode_type(c.selectedText()).rstrip('\0')
else:
c.setPosition(c.position() - min(c.positionInBlock(), 6), c.KeepAnchor)
text = unicode_type(c.selectedText()).rstrip('\0')
m = re.search(r'[a-fA-F0-9]{2,6}$', text)
if m is None:
return False
text = m.group()
try:
num = int(text, 16)
except ValueError:
return False
if num > 0x10ffff or num < 1:
return False
end_pos = max(c.anchor(), c.position())
c.setPosition(end_pos - len(text)), c.setPosition(end_pos, c.KeepAnchor)
c.insertText(safe_chr(num))
return True
def select_all(self):
c = self.textCursor()
c.clearSelection()
c.setPosition(0)
c.movePosition(c.End, c.KeepAnchor)
self.setTextCursor(c)
def rename_block_tag(self, new_name):
if hasattr(self.smarts, 'rename_block_tag'):
self.smarts.rename_block_tag(self, new_name)
def current_tag(self, for_position_sync=True):
return self.smarts.cursor_position_with_sourceline(self.textCursor(), for_position_sync=for_position_sync)
def goto_sourceline(self, sourceline, tags, attribute=None):
return self.smarts.goto_sourceline(self, sourceline, tags, attribute=attribute)
def get_tag_contents(self):
c = self.smarts.get_inner_HTML(self)
if c is not None:
return self.selected_text_from_cursor(c)
def goto_css_rule(self, rule_address, sourceline_address=None):
from calibre.gui2.tweak_book.editor.smarts.css import find_rule
block = None
if self.syntax == 'css':
raw = unicode_type(self.toPlainText())
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(line - 1)
elif sourceline_address is not None:
sourceline, tags = sourceline_address
if self.goto_sourceline(sourceline, tags):
c = self.textCursor()
c.setPosition(c.position() + 1)
self.setTextCursor(c)
raw = self.get_tag_contents()
line, col = find_rule(raw, rule_address)
if line is not None:
block = self.document().findBlockByNumber(c.blockNumber() + line - 1)
if block is not None and block.isValid():
c = self.textCursor()
c.setPosition(block.position() + col)
self.setTextCursor(c)
def change_case(self, action, cursor=None):
cursor = cursor or self.textCursor()
text = self.selected_text_from_cursor(cursor)
text = {'lower':lower, 'upper':upper, 'capitalize':capitalize, 'title':titlecase, 'swap':swapcase}[action](text)
cursor.insertText(text)
self.setTextCursor(cursor)