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-rw-r--r--examples/widgets/codeeditor/codeeditor.py141
1 files changed, 0 insertions, 141 deletions
diff --git a/examples/widgets/codeeditor/codeeditor.py b/examples/widgets/codeeditor/codeeditor.py
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index f5f119000..000000000
--- a/examples/widgets/codeeditor/codeeditor.py
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-#############################################################################
-##
-## Copyright (C) 2019 The Qt Company Ltd.
-## Contact: http://www.qt.io/licensing/
-##
-## This file is part of the Qt for Python examples of the Qt Toolkit.
-##
-## $QT_BEGIN_LICENSE:BSD$
-## You may use this file under the terms of the BSD license as follows:
-##
-## "Redistribution and use in source and binary forms, with or without
-## modification, are permitted provided that the following conditions are
-## met:
-## * Redistributions of source code must retain the above copyright
-## notice, this list of conditions and the following disclaimer.
-## * Redistributions in binary form must reproduce the above copyright
-## notice, this list of conditions and the following disclaimer in
-## the documentation and/or other materials provided with the
-## distribution.
-## * Neither the name of The Qt Company Ltd nor the names of its
-## contributors may be used to endorse or promote products derived
-## from this software without specific prior written permission.
-##
-##
-## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-##
-## $QT_END_LICENSE$
-##
-#############################################################################
-
-from PySide6.QtCore import Slot, Qt, QRect, QSize
-from PySide6.QtGui import QColor, QPainter, QTextFormat
-from PySide6.QtWidgets import QPlainTextEdit, QWidget, QTextEdit
-
-
-class LineNumberArea(QWidget):
- def __init__(self, editor):
- QWidget.__init__(self, editor)
- self._code_editor = editor
-
- def sizeHint(self):
- return QSize(self._code_editor.line_number_area_width(), 0)
-
- def paintEvent(self, event):
- self._code_editor.lineNumberAreaPaintEvent(event)
-
-
-class CodeEditor(QPlainTextEdit):
- def __init__(self):
- super().__init__()
- self.line_number_area = LineNumberArea(self)
-
- self.blockCountChanged[int].connect(self.update_line_number_area_width)
- self.updateRequest[QRect, int].connect(self.update_line_number_area)
- self.cursorPositionChanged.connect(self.highlight_current_line)
-
- self.update_line_number_area_width(0)
- self.highlight_current_line()
-
- def line_number_area_width(self):
- digits = 1
- max_num = max(1, self.blockCount())
- while max_num >= 10:
- max_num *= 0.1
- digits += 1
-
- space = 3 + self.fontMetrics().horizontalAdvance('9') * digits
- return space
-
- def resizeEvent(self, e):
- super().resizeEvent(e)
- cr = self.contentsRect()
- width = self.line_number_area_width()
- rect = QRect(cr.left(), cr.top(), width, cr.height())
- self.line_number_area.setGeometry(rect)
-
- def lineNumberAreaPaintEvent(self, event):
- painter = QPainter(self.line_number_area)
- painter.fillRect(event.rect(), Qt.lightGray)
- block = self.firstVisibleBlock()
- block_number = block.blockNumber()
- offset = self.contentOffset()
- top = self.blockBoundingGeometry(block).translated(offset).top()
- bottom = top + self.blockBoundingRect(block).height()
-
- while block.isValid() and top <= event.rect().bottom():
- if block.isVisible() and bottom >= event.rect().top():
- number = str(block_number + 1)
- painter.setPen(Qt.black)
- width = self.line_number_area.width()
- height = self.fontMetrics().height()
- painter.drawText(0, top, width, height, Qt.AlignRight, number)
-
- block = block.next()
- top = bottom
- bottom = top + self.blockBoundingRect(block).height()
- block_number += 1
-
- @Slot()
- def update_line_number_area_width(self, newBlockCount):
- self.setViewportMargins(self.line_number_area_width(), 0, 0, 0)
-
- @Slot()
- def update_line_number_area(self, rect, dy):
- if dy:
- self.line_number_area.scroll(0, dy)
- else:
- width = self.line_number_area.width()
- self.line_number_area.update(0, rect.y(), width, rect.height())
-
- if rect.contains(self.viewport().rect()):
- self.update_line_number_area_width(0)
-
- @Slot()
- def highlight_current_line(self):
- extra_selections = []
-
- if not self.isReadOnly():
- selection = QTextEdit.ExtraSelection()
-
- line_color = QColor(Qt.yellow).lighter(160)
- selection.format.setBackground(line_color)
-
- selection.format.setProperty(QTextFormat.FullWidthSelection, True)
-
- selection.cursor = self.textCursor()
- selection.cursor.clearSelection()
-
- extra_selections.append(selection)
-
- self.setExtraSelections(extra_selections)