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Add options dialog with simple configuration management.
Minor presentation bugfixes. Bump version and bdbag dependency version.
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| Original file line number | Diff line number | Diff line change |
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| import sys | ||
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| from PyQt5.QtCore import Qt, QRegExp, QSize, QRect | ||
| from PyQt5.QtGui import QSyntaxHighlighter, QTextCharFormat, QFont, QPainter, QColor, QTextFormat | ||
| from PyQt5.QtWidgets import QTextEdit, QApplication, QWidget, QPlainTextEdit, QMessageBox, QDialog, QVBoxLayout | ||
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| class JSONSyntaxHighlighter(QSyntaxHighlighter): | ||
| def __init__(self, parent=None): | ||
| super(JSONSyntaxHighlighter, self).__init__(parent) | ||
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| self.symbol_format = QTextCharFormat() | ||
| self.symbol_format.setForeground(Qt.blue) | ||
| self.symbol_format.setFontWeight(QFont.Bold) | ||
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| self.name_format = QTextCharFormat() | ||
| self.name_format.setForeground(Qt.darkMagenta) | ||
| self.name_format.setFontWeight(QFont.Bold) | ||
| self.name_format.setFontItalic(True) | ||
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| self.value_format = QTextCharFormat() | ||
| self.value_format.setForeground(Qt.darkGreen) | ||
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| def highlightBlock(self, text): | ||
| expression = QRegExp("(\\{|\\}|\\[|\\]|\\:|\\,)") | ||
| index = expression.indexIn(text) | ||
| while index >= 0: | ||
| length = expression.matchedLength() | ||
| self.setFormat(index, length, self.symbol_format) | ||
| index = expression.indexIn(text, index + length) | ||
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| text.replace("\\\"", " ") | ||
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| expression = QRegExp("\".*\" *\\:") | ||
| expression.setMinimal(True) | ||
| index = expression.indexIn(text) | ||
| while index >= 0: | ||
| length = expression.matchedLength() | ||
| self.setFormat(index, length - 1, self.name_format) | ||
| index = expression.indexIn(text, index + length) | ||
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| expression = QRegExp("\\: *\".*\"") | ||
| expression.setMinimal(True) | ||
| index = expression.indexIn(text) | ||
| while index >= 0: | ||
| length = expression.matchedLength() | ||
| self.setFormat(index, length, self.value_format) | ||
| index = expression.indexIn(text, index + length) | ||
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| class LineNumberArea(QWidget): | ||
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| def __init__(self, editor): | ||
| super().__init__(editor) | ||
| self.editor = editor | ||
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| def sizeHint(self): | ||
| return QSize(self.editor.lineNumberAreaWidth(), 0) | ||
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| def paintEvent(self, event): | ||
| self.editor.lineNumberAreaPaintEvent(event) | ||
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| class CodeEditor(QPlainTextEdit): | ||
| def __init__(self): | ||
| super().__init__() | ||
| self.modified = False | ||
| self.lineNumberArea = LineNumberArea(self) | ||
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| self.modificationChanged.connect(self.setModified) | ||
| self.blockCountChanged.connect(self.updateLineNumberAreaWidth) | ||
| self.updateRequest.connect(self.updateLineNumberArea) | ||
| self.cursorPositionChanged.connect(self.highlightCurrentLine) | ||
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| self.updateLineNumberAreaWidth(0) | ||
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| def setModified(self, modified): | ||
| self.modified = modified | ||
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| def lineNumberAreaWidth(self): | ||
| digits = 1 | ||
| count = max(1, self.blockCount()) | ||
| while count >= 10: | ||
| count /= 10 | ||
| digits += 1 | ||
| space = 3 + self.fontMetrics().width('9') * digits | ||
| return space | ||
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| def updateLineNumberAreaWidth(self, _): | ||
| self.setViewportMargins(self.lineNumberAreaWidth(), 0, 0, 0) | ||
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| def updateLineNumberArea(self, rect, dy): | ||
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| if dy: | ||
| self.lineNumberArea.scroll(0, dy) | ||
| else: | ||
| self.lineNumberArea.update(0, rect.y(), self.lineNumberArea.width(), rect.height()) | ||
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| if rect.contains(self.viewport().rect()): | ||
| self.updateLineNumberAreaWidth(0) | ||
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| def resizeEvent(self, event): | ||
| super().resizeEvent(event) | ||
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| cr = self.contentsRect() | ||
| self.lineNumberArea.setGeometry(QRect(cr.left(), cr.top(), self.lineNumberAreaWidth(), cr.height())) | ||
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| def lineNumberAreaPaintEvent(self, event): | ||
| painter = QPainter(self.lineNumberArea) | ||
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| painter.fillRect(event.rect(), Qt.lightGray) | ||
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| block = self.firstVisibleBlock() | ||
| blockNumber = block.blockNumber() | ||
| top = self.blockBoundingGeometry(block).translated(self.contentOffset()).top() | ||
| bottom = top + self.blockBoundingRect(block).height() | ||
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| height = self.fontMetrics().height() | ||
| while block.isValid() and (top <= event.rect().bottom()): | ||
| if block.isVisible() and (bottom >= event.rect().top()): | ||
| number = str(blockNumber + 1) | ||
| painter.setPen(Qt.black) | ||
| painter.drawText(0, top, self.lineNumberArea.width(), height, Qt.AlignRight, number) | ||
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| block = block.next() | ||
| top = bottom | ||
| bottom = top + self.blockBoundingRect(block).height() | ||
| blockNumber += 1 | ||
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| def highlightCurrentLine(self): | ||
| extraSelections = [] | ||
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| if not self.isReadOnly(): | ||
| selection = QTextEdit.ExtraSelection() | ||
| lineColor = QColor(Qt.yellow).lighter(160) | ||
| selection.format.setBackground(lineColor) | ||
| selection.format.setProperty(QTextFormat.FullWidthSelection, True) | ||
| selection.cursor = self.textCursor() | ||
| selection.cursor.clearSelection() | ||
| extraSelections.append(selection) | ||
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| self.setExtraSelections(extraSelections) | ||
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| class JSONEditor(QDialog): | ||
| def __init__(self, parent, file_path, title="JSON Editor"): | ||
| super().__init__(parent) | ||
| self.setWindowTitle(title) | ||
| self.file_path = file_path | ||
| self.editor = CodeEditor() | ||
| self.highlighter = JSONSyntaxHighlighter(self.editor.document()) | ||
| self.initUI() | ||
| self.openFile() | ||
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| def initUI(self): | ||
| layout = QVBoxLayout() | ||
| layout.addWidget(self.editor) | ||
| self.setLayout(layout) | ||
| font = QFont() | ||
| font.setFamily('Courier') | ||
| font.setFixedPitch(True) | ||
| font.setPointSize(10) | ||
| self.setFont(font) | ||
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| self.setMinimumSize(800, 600) | ||
| self.setWindowFlags(self.windowFlags() & ~Qt.WindowContextHelpButtonHint) | ||
| self.setSizeGripEnabled(True) | ||
| self.show() | ||
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| def saveFile(self): | ||
| with open(self.file_path, 'w') as f: | ||
| file_data = self.editor.toPlainText() | ||
| f.write(file_data) | ||
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| def openFile(self): | ||
| with open(self.file_path, 'r') as f: | ||
| file_data = f.read() | ||
| self.editor.setPlainText(file_data) | ||
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| def closeEvent(self, event=None): | ||
| if not self.editor.modified: | ||
| return | ||
| msg = QMessageBox() | ||
| msg.setIcon(QMessageBox.Information) | ||
| msg.setWindowIcon(self.parent().windowIcon()) | ||
| msg.setWindowTitle("Save Changes?") | ||
| msg.setText("Do you want to save changes to this file?") | ||
| msg.setStandardButtons(QMessageBox.Yes | QMessageBox.No) | ||
| ret = msg.exec_() | ||
| if ret == QMessageBox.Yes: | ||
| self.saveFile() | ||
| if event: | ||
| event.accept() | ||
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| def isModified(self): | ||
| return self.editor.modified | ||
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| def main(): | ||
| app = QApplication(sys.argv) | ||
| editor = JSONEditor(sys.argv[1]) | ||
| editor.exec_() | ||
| sys.exit(app.exec_()) | ||
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| if __name__ == "__main__": | ||
| main() |
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