/usr/share/pyshared/ninja_ide/gui/editor/sidebar_widget.py is in ninja-ide 2.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This file is part of NINJA-IDE (http://ninja-ide.org).
#
# NINJA-IDE is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# any later version.
#
# NINJA-IDE is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with NINJA-IDE; If not, see <http://www.gnu.org/licenses/>.
from __future__ import absolute_import
import math
import re
from PyQt4.QtGui import QWidget
from PyQt4.QtGui import QBrush
from PyQt4.QtGui import QLinearGradient
from PyQt4.QtGui import QPixmap
from PyQt4.QtGui import QColor
from PyQt4.QtGui import QPolygonF
from PyQt4.QtGui import QFontMetrics
from PyQt4.QtGui import QPainter
from PyQt4.QtCore import Qt
from PyQt4.QtCore import QPointF
from ninja_ide import resources
from ninja_ide.core import settings
from ninja_ide.gui.editor import helpers
#based on: http://john.nachtimwald.com/2009/08/15/qtextedit-with-line-numbers/
#(MIT license)
class SidebarWidget(QWidget):
def __init__(self, editor):
QWidget.__init__(self, editor)
self.edit = editor
self.highest_line = 0
self.foldArea = 15
self.rightArrowIcon = QPixmap()
self.downArrowIcon = QPixmap()
self.pat = re.compile(
"(\s)*def |(\s)*class |(\s)*if |(\s)*while |"
"(\s)*else:|(\s)*elif |(\s)*for |"
"(\s)*try:|(\s)*except:|(\s)*except |(\s)*#begin-fold:")
self.patNotPython = re.compile('(\s)*#begin-fold:|(.)*{')
self._foldedBlocks = []
self._breakpoints = []
self._bookmarks = []
self._pep8Lines = []
self._errorsLines = []
self._migrationLines = []
def update_area(self):
maxLine = math.ceil(math.log10(self.edit.blockCount()))
width = QFontMetrics(
self.edit.document().defaultFont()).width('0' * int(maxLine)) \
+ 10 + self.foldArea
if self.width() != width:
self.setFixedWidth(width)
self.edit.setViewportMargins(width, 0, 0, 0)
self.update()
def update(self, *args):
QWidget.update(self, *args)
def pep8_check_lines(self, lines):
self._pep8Lines = lines
def static_errors_lines(self, lines):
self._errorsLines = lines
def migration_lines(self, lines):
self._migrationLines = lines
def code_folding_event(self, lineNumber):
if self._is_folded(lineNumber):
self._fold(lineNumber)
else:
self._unfold(lineNumber)
self.edit.update()
self.update()
def _fold(self, lineNumber):
startBlock = self.edit.document().findBlockByNumber(lineNumber - 1)
endPos = self._find_fold_closing(startBlock)
endBlock = self.edit.document().findBlockByNumber(endPos)
block = startBlock.next()
while block.isValid() and block != endBlock:
block.setVisible(False)
block.setLineCount(0)
block = block.next()
self._foldedBlocks.append(startBlock.blockNumber())
self.edit.document().markContentsDirty(startBlock.position(), endPos)
def _unfold(self, lineNumber):
startBlock = self.edit.document().findBlockByNumber(lineNumber - 1)
endPos = self._find_fold_closing(startBlock)
endBlock = self.edit.document().findBlockByNumber(endPos)
block = startBlock.next()
while block.isValid() and block != endBlock:
block.setVisible(True)
block.setLineCount(block.layout().lineCount())
endPos = block.position() + block.length()
if block.blockNumber() in self._foldedBlocks:
close = self._find_fold_closing(block)
block = self.edit.document().findBlockByNumber(close)
else:
block = block.next()
self._foldedBlocks.remove(startBlock.blockNumber())
self.edit.document().markContentsDirty(startBlock.position(), endPos)
def _is_folded(self, line):
block = self.edit.document().findBlockByNumber(line)
if not block.isValid():
return False
return block.isVisible()
def _find_fold_closing(self, block):
text = block.text()
pat = re.compile('(\s)*#begin-fold:')
patBrace = re.compile('(.)*{$')
if pat.match(text):
return self._find_fold_closing_label(block)
elif patBrace.match(text):
return self._find_fold_closing_brace(block)
spaces = helpers.get_leading_spaces(text)
pat = re.compile('^\s*$|^\s*#')
block = block.next()
while block.isValid():
text2 = block.text()
if not pat.match(text2):
spacesEnd = helpers.get_leading_spaces(text2)
if len(spacesEnd) <= len(spaces):
if pat.match(block.previous().text()):
return block.previous().blockNumber()
else:
return block.blockNumber()
block = block.next()
return block.previous().blockNumber()
def _find_fold_closing_label(self, block):
text = block.text()
label = text.split(':')[1]
block = block.next()
pat = re.compile('\s*#end-fold:' + label)
while block.isValid():
if pat.match(block.text()):
return block.blockNumber() + 1
block = block.next()
return block.blockNumber()
def _find_fold_closing_brace(self, block):
block = block.next()
openBrace = 1
while block.isValid():
openBrace += block.text().count('{')
openBrace -= block.text().count('}')
if openBrace == 0:
return block.blockNumber() + 1
elif openBrace < 0:
return block.blockNumber()
block = block.next()
return block.blockNumber()
def paintEvent(self, event):
page_bottom = self.edit.viewport().height()
font_metrics = QFontMetrics(self.edit.document().defaultFont())
current_block = self.edit.document().findBlock(
self.edit.textCursor().position())
pattern = self.pat if self.edit.lang == "python" else self.patNotPython
painter = QPainter(self)
background = resources.CUSTOM_SCHEME.get('sidebar-background',
resources.COLOR_SCHEME['sidebar-background'])
foreground = resources.CUSTOM_SCHEME.get('sidebar-foreground',
resources.COLOR_SCHEME['sidebar-foreground'])
pep8color = resources.CUSTOM_SCHEME.get('pep8-underline',
resources.COLOR_SCHEME['pep8-underline'])
errorcolor = resources.CUSTOM_SCHEME.get('error-underline',
resources.COLOR_SCHEME['error-underline'])
migrationcolor = resources.CUSTOM_SCHEME.get('migration-underline',
resources.COLOR_SCHEME['migration-underline'])
painter.fillRect(self.rect(), QColor(background))
block = self.edit.firstVisibleBlock()
viewport_offset = self.edit.contentOffset()
line_count = block.blockNumber()
painter.setFont(self.edit.document().defaultFont())
while block.isValid():
line_count += 1
# The top left position of the block in the document
position = self.edit.blockBoundingGeometry(block).topLeft() + \
viewport_offset
# Check if the position of the block is outside of the visible area
if position.y() > page_bottom:
break
# Set the Painter Pen depending on special lines
error = False
if settings.CHECK_STYLE and \
((line_count - 1) in self._pep8Lines):
painter.setPen(QColor(pep8color))
font = painter.font()
font.setItalic(True)
font.setUnderline(True)
painter.setFont(font)
error = True
elif settings.FIND_ERRORS and \
((line_count - 1) in self._errorsLines):
painter.setPen(QColor(errorcolor))
font = painter.font()
font.setItalic(True)
font.setUnderline(True)
painter.setFont(font)
error = True
elif settings.SHOW_MIGRATION_TIPS and \
((line_count - 1) in self._migrationLines):
painter.setPen(QColor(migrationcolor))
font = painter.font()
font.setItalic(True)
font.setUnderline(True)
painter.setFont(font)
error = True
else:
painter.setPen(QColor(foreground))
# We want the line number for the selected line to be bold.
bold = False
if block == current_block:
bold = True
font = painter.font()
font.setBold(True)
painter.setFont(font)
# Draw the line number right justified at the y position of the
# line. 3 is a magic padding number. drawText(x, y, text).
if block.isVisible():
painter.drawText(self.width() - self.foldArea -
font_metrics.width(str(line_count)) - 3,
round(position.y()) + font_metrics.ascent() +
font_metrics.descent() - 1,
str(line_count))
# Remove the bold style if it was set previously.
if bold:
font = painter.font()
font.setBold(False)
painter.setFont(font)
if error:
font = painter.font()
font.setItalic(False)
font.setUnderline(False)
painter.setFont(font)
block = block.next()
self.highest_line = line_count
#Code Folding
xofs = self.width() - self.foldArea
painter.fillRect(xofs, 0, self.foldArea, self.height(),
QColor(resources.CUSTOM_SCHEME.get('fold-area',
resources.COLOR_SCHEME['fold-area'])))
if self.foldArea != self.rightArrowIcon.width():
polygon = QPolygonF()
self.rightArrowIcon = QPixmap(self.foldArea, self.foldArea)
self.rightArrowIcon.fill(Qt.transparent)
self.downArrowIcon = QPixmap(self.foldArea, self.foldArea)
self.downArrowIcon.fill(Qt.transparent)
polygon.append(QPointF(self.foldArea * 0.4, self.foldArea * 0.25))
polygon.append(QPointF(self.foldArea * 0.4, self.foldArea * 0.75))
polygon.append(QPointF(self.foldArea * 0.8, self.foldArea * 0.5))
iconPainter = QPainter(self.rightArrowIcon)
iconPainter.setRenderHint(QPainter.Antialiasing)
iconPainter.setPen(Qt.NoPen)
iconPainter.setBrush(QColor(
resources.CUSTOM_SCHEME.get('fold-arrow',
resources.COLOR_SCHEME['fold-arrow'])))
iconPainter.drawPolygon(polygon)
polygon.clear()
polygon.append(QPointF(self.foldArea * 0.25, self.foldArea * 0.4))
polygon.append(QPointF(self.foldArea * 0.75, self.foldArea * 0.4))
polygon.append(QPointF(self.foldArea * 0.5, self.foldArea * 0.8))
iconPainter = QPainter(self.downArrowIcon)
iconPainter.setRenderHint(QPainter.Antialiasing)
iconPainter.setPen(Qt.NoPen)
iconPainter.setBrush(QColor(
resources.CUSTOM_SCHEME.get('fold-arrow',
resources.COLOR_SCHEME['fold-arrow'])))
iconPainter.drawPolygon(polygon)
block = self.edit.firstVisibleBlock()
while block.isValid():
position = self.edit.blockBoundingGeometry(
block).topLeft() + viewport_offset
#Check if the position of the block is outside of the visible area
if position.y() > page_bottom:
break
if pattern.match(block.text()) and block.isVisible():
if block.blockNumber() in self._foldedBlocks:
painter.drawPixmap(xofs, round(position.y()),
self.rightArrowIcon)
else:
painter.drawPixmap(xofs, round(position.y()),
self.downArrowIcon)
#Add Bookmarks and Breakpoint
elif block.blockNumber() in self._breakpoints:
linear_gradient = QLinearGradient(
xofs, round(position.y()),
xofs + self.foldArea, round(position.y()) + self.foldArea)
linear_gradient.setColorAt(0, QColor(255, 11, 11))
linear_gradient.setColorAt(1, QColor(147, 9, 9))
painter.setRenderHints(QPainter.Antialiasing, True)
painter.setPen(Qt.NoPen)
painter.setBrush(QBrush(linear_gradient))
painter.drawEllipse(
xofs + 1,
round(position.y()) + 6,
self.foldArea - 1, self.foldArea - 1)
elif block.blockNumber() in self._bookmarks:
linear_gradient = QLinearGradient(
xofs, round(position.y()),
xofs + self.foldArea, round(position.y()) + self.foldArea)
linear_gradient.setColorAt(0, QColor(13, 62, 243))
linear_gradient.setColorAt(1, QColor(5, 27, 106))
painter.setRenderHints(QPainter.Antialiasing, True)
painter.setPen(Qt.NoPen)
painter.setBrush(QBrush(linear_gradient))
painter.drawRoundedRect(
xofs + 1,
round(position.y()) + 6,
self.foldArea - 2, self.foldArea - 1,
3, 3)
block = block.next()
painter.end()
QWidget.paintEvent(self, event)
def mousePressEvent(self, event):
if self.foldArea > 0:
xofs = self.width() - self.foldArea
font_metrics = QFontMetrics(self.edit.document().defaultFont())
fh = font_metrics.lineSpacing()
ys = event.posF().y()
lineNumber = 0
if event.pos().x() > xofs:
pattern = self.pat
if self.edit.lang != "python":
pattern = self.patNotPython
block = self.edit.firstVisibleBlock()
viewport_offset = self.edit.contentOffset()
page_bottom = self.edit.viewport().height()
while block.isValid():
position = self.edit.blockBoundingGeometry(
block).topLeft() + viewport_offset
if position.y() > page_bottom:
break
if position.y() < ys and (position.y() + fh) > ys and \
pattern.match(str(block.text())):
lineNumber = block.blockNumber() + 1
break
elif position.y() < ys and (position.y() + fh) > ys and \
event.button() == Qt.LeftButton:
line = block.blockNumber()
if line in self._breakpoints:
self._breakpoints.remove(line)
else:
self._breakpoints.append(line)
self.update()
break
elif position.y() < ys and (position.y() + fh) > ys and \
event.button() == Qt.RightButton:
line = block.blockNumber()
if line in self._bookmarks:
self._bookmarks.remove(line)
else:
self._bookmarks.append(line)
self.update()
break
block = block.next()
self._save_breakpoints_bookmarks()
if lineNumber > 0:
self.code_folding_event(lineNumber)
def _save_breakpoints_bookmarks(self):
if self._bookmarks and self.edit.ID != "":
settings.BOOKMARKS[self.edit.ID] = self._bookmarks
elif self.edit.ID in settings.BOOKMARKS:
settings.BOOKMARKS.pop(self.edit.ID)
if self._breakpoints and self.edit.ID != "":
settings.BREAKPOINTS[self.edit.ID] = self._breakpoints
elif self.edit.ID in settings.BREAKPOINTS:
settings.BREAKPOINTS.pop(self.edit.ID)
def set_breakpoint(self, lineno):
if lineno in self._breakpoints:
self._breakpoints.remove(lineno)
else:
self._breakpoints.append(lineno)
self.update()
self._save_breakpoints_bookmarks()
def set_bookmark(self, lineno):
if lineno in self._bookmarks:
self._bookmarks.remove(lineno)
else:
self._bookmarks.append(lineno)
self.update()
self._save_breakpoints_bookmarks()
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