diff options
Diffstat (limited to 'examples/widgets/codeeditor/codeeditor.py')
-rw-r--r-- | examples/widgets/codeeditor/codeeditor.py | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/examples/widgets/codeeditor/codeeditor.py b/examples/widgets/codeeditor/codeeditor.py deleted file mode 100644 index f5f119000..000000000 --- a/examples/widgets/codeeditor/codeeditor.py +++ /dev/null @@ -1,141 +0,0 @@ -############################################################################# -## -## 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) |