Extend Python Example

Author: Simsys

.gitignore

@@ -1,3 +1,3 @@
 /build
-/__pycache__
+/**/__pycache__
 /.venv

python/example/example.py

@@ -0,0 +1,271 @@
+#!/usr/bin/env python
+
+import sys
+
+try:
+    from PyQt5 import QtWidgets, QtCore, QtGui
+except:
+    from PyQt5 import QtWidgets, QtCore, QtGui
+
+from QHexEdit import QHexEdit
+
+import qhexedit_rc
+
+
+class MainWindow(QtWidgets.QMainWindow):
+
+    def __init__(self, fileName=None):
+        super(MainWindow, self).__init__()
+        self.init()
+        self.setCurrentFile('')
+        
+    def about(self):
+        QtWidgets.QMessageBox.about(self, "About HexEdit",
+            "The HexEdit example is a short Demo of the QHexEdit Widget.");
+
+    def closeEvent(self, event):
+        self.writeSettings()
+        self.close()
+
+    def createActions(self):
+        self.openAct = QtWidgets.QAction(QtGui.QIcon(':/images/open.png'),
+                "&Open...", self, shortcut=QtGui.QKeySequence.Open,
+                statusTip="Open an existing file", triggered=self.open)
+
+        self.saveAct = QtWidgets.QAction(QtGui.QIcon(':/images/save.png'),
+                "&Save", self, shortcut=QtGui.QKeySequence.Save,
+                statusTip="Save the document to disk", triggered=self.save)
+
+        self.saveAsAct = QtWidgets.QAction("Save &As...", self,
+                shortcut=QtGui.QKeySequence.SaveAs,
+                statusTip="Save the document under a new name", triggered=self.saveAs)
+        
+        self.saveReadable = QtWidgets.QAction("Save as &Readable...", self,
+                statusTip="Save in a readable format", triggered=self.saveToReadableFile)
+
+        self.exitAct = QtWidgets.QAction("E&xit", self, shortcut="Ctrl+Q",
+                statusTip="Exit the application", triggered=self.close)
+        
+        self.undoAct = QtWidgets.QAction(QtGui.QIcon(':/images/undo.png'),
+                "&Undo", self, shortcut=QtGui.QKeySequence.Undo, triggered=self.hexEdit.undo)
+                
+        self.redoAct = QtWidgets.QAction(QtGui.QIcon(':/images/redo.png'), 
+                "&Redo", self, shortcut=QtGui.QKeySequence.Redo, triggered=self.hexEdit.redo)
+        
+        self.saveSelectionReadable = QtWidgets.QAction("Save Selection Readable...", self,
+                statusTip="Save selection in a readable format",
+                triggered=self.saveSelectionToReadableFile)
+        
+        self.aboutAct = QtWidgets.QAction("&About", self,
+                statusTip="Show the application's About box", triggered=self.about)
+                
+        self.findAct = QtWidgets.QAction("&Find/Replace", self, shortcut=QtGui.QKeySequence.Find,
+                statusTip="Show the Dialog for finding and replacing", triggered=self.showSearchDialog)
+
+        self.findNextAct = QtWidgets.QAction("Find &next", self, shortcut=QtGui.QKeySequence.FindNext, 
+                statusTip="Find next occurrence of the searched pattern", triggered=self.findNext)
+
+        self.optionsAct = QtWidgets.QAction("&Options", self,
+                statusTip="Show the options dialog", triggered=self.showOptionsDialog)
+
+    def createMenus(self):
+        self.fileMenu = self.menuBar().addMenu("&File")
+        self.fileMenu.addAction(self.openAct)
+        self.fileMenu.addAction(self.saveAct)
+        self.fileMenu.addAction(self.saveAsAct)
+        self.fileMenu.addAction(self.saveReadable)
+        self.fileMenu.addSeparator()
+        self.fileMenu.addAction(self.exitAct)
+        
+        self.editMenu = self.menuBar().addMenu("&Edit")
+        self.editMenu.addAction(self.undoAct)
+        self.editMenu.addAction(self.redoAct)
+        self.editMenu.addAction(self.saveSelectionReadable)
+        
+        self.helpMenu = self.menuBar().addMenu("&Help")
+        self.helpMenu.addAction(self.aboutAct)
+        
+    def createStatusBar(self):
+        # Address Label
+        self.lbAddressName = QtWidgets.QLabel()
+        self.lbAddressName.setText("Address:")
+        self.statusBar().addPermanentWidget(self.lbAddressName)
+        self.lbAddress = QtWidgets.QLabel()
+        self.lbAddress.setFrameShape(QtWidgets.QFrame.Panel)
+        self.lbAddress.setFrameShadow(QtWidgets.QFrame.Sunken)
+        self.lbAddress.setMinimumWidth(70)
+        self.statusBar().addPermanentWidget(self.lbAddress)
+        self.hexEdit.currentAddressChanged.connect(self.setAddress)
+        
+        # Address Size
+        self.lbSizeName = QtWidgets.QLabel()
+        self.lbSizeName.setText("Size:")
+        self.statusBar().addPermanentWidget(self.lbSizeName)
+        self.lbSize = QtWidgets.QLabel()
+        self.lbSize.setFrameShape(QtWidgets.QFrame.Panel)
+        self.lbSize.setFrameShadow(QtWidgets.QFrame.Sunken)
+        self.lbSize.setMinimumWidth(70)
+        self.statusBar().addPermanentWidget(self.lbSize)
+        self.hexEdit.currentSizeChanged.connect(self.setSize)
+        
+        # Overwrite Mode label
+        self.lbOverwriteModeName = QtWidgets.QLabel()
+        self.lbOverwriteModeName.setText("Mode:")
+        self.statusBar().addPermanentWidget(self.lbOverwriteModeName)
+        self.lbOverwriteMode = QtWidgets.QLabel()
+        self.lbOverwriteMode.setFrameShape(QtWidgets.QFrame.Panel)
+        self.lbOverwriteMode.setFrameShadow(QtWidgets.QFrame.Sunken)
+        self.lbOverwriteMode.setMinimumWidth(70)
+        self.statusBar().addPermanentWidget(self.lbOverwriteMode)
+        self.setOverwriteMode(self.hexEdit.overwriteMode())
+
+        self.statusBar().showMessage("Ready")
+        
+    def createToolBars(self):
+        self.fileToolBar = self.addToolBar("File")
+        self.fileToolBar.addAction(self.openAct)
+        self.fileToolBar.addAction(self.saveAct)
+        self.fileToolBar.addAction(self.undoAct)
+        self.fileToolBar.addAction(self.redoAct)
+
+    def init(self):
+        self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
+        self.isUntitled = True
+        
+        self.hexEdit = QHexEdit()
+        self.setCentralWidget(self.hexEdit)
+        self.hexEdit.overwriteModeChanged.connect(self.setOverwriteMode)
+
+        self.createActions()
+        self.createMenus()
+        self.createToolBars()
+        self.createStatusBar()
+
+        self.readSettings()
+
+    def loadFile(self, fileName):
+        file = QtCore.QFile(fileName)
+        if not file.open( QtCore.QFile.ReadOnly | QtCore.QFile.Text):
+            QtWidgets.QMessageBox.warning(self, "QHexEdit",
+                    "Cannot read file %s:\n%s." % (fileName, file.errorString()))
+            return
+
+        QtWidgets.QApplication.setOverrideCursor(QtCore.Qt.WaitCursor)
+        self.hexEdit.setData(file.readAll())
+        QtWidgets.QApplication.restoreOverrideCursor()
+
+        self.setCurrentFile(fileName)
+        self.statusBar().showMessage("File loaded", 2000)
+
+    def open(self):
+        fileName, _filter = QtWidgets.QFileDialog.getOpenFileName(self)
+        if fileName:
+            self.loadFile(fileName)
+
+    def optionsAccepted(self):
+        self.writeSettings()
+        self.readSettings()
+        
+    def findNext(self):
+        self.searchDialog.findNext()
+
+    def readSettings(self):
+        settings = QtCore.QSettings()
+
+        pos = settings.value('pos', QtCore.QPoint(200, 200))
+        size = settings.value('size', QtCore.QSize(610, 460))
+        self.hexEdit.setAddressArea(settings.value("AddressArea")=='true')
+        self.hexEdit.setAsciiArea(settings.value("AsciiArea")=='true')
+        self.hexEdit.setHighlighting(settings.value("Highlighting")=='true')
+        self.hexEdit.setOverwriteMode(settings.value("OverwriteMode")=='true')
+        self.hexEdit.setReadOnly(settings.value("ReadOnly")=='true')
+
+        self.hexEdit.setHighlightingColor(QtGui.QColor(settings.value("HighlightingColor")))
+        self.hexEdit.setAddressAreaColor(QtGui.QColor(settings.value("AddressAreaColor")))
+        self.hexEdit.setSelectionColor(QtGui.QColor(settings.value("SelectionColor")))
+        self.hexEdit.setFont(QtGui.QFont(settings.value("WidgetFont", QtGui.QFont(QtGui.QFont("Courier New", 10)))))
+
+        self.hexEdit.setAddressWidth(int(settings.value("AddressAreaWidth")));
+        self.move(pos)
+        self.resize(size)
+
+    def save(self):
+        if self.isUntitled:
+            return self.saveAs()
+        else:
+            return self.saveFile(self.curFile)
+
+    def saveAs(self):
+        fileName, _filter = QtWidgets.QFileDialog.getSaveFileName(self, "Save As", self.curFile)
+        if not fileName:
+            return False
+        return self.saveFile(fileName)
+
+    def showOptionsDialog(self):
+        self.optionsDialog.show()
+        
+    def showSearchDialog(self):
+        self.searchDialog.show()
+        
+    def setAddress(self, address):
+        self.lbAddress.setText('%x' % address)
+        
+    def setOverwriteMode(self, mode):
+        settings = QtCore.QSettings()
+        settings.setValue("OverwriteMode", mode)
+        if mode:
+            self.lbOverwriteMode.setText("Overwrite")
+        else:
+            self.lbOverwriteMode.setText("Insert")
+            
+    def setSize(self, size):
+        self.lbSize.setText('%d' % size)
+            
+    def saveFile(self, fileName):
+        file = QtCore.QFile(fileName)
+        if not file.open( QtCore.QFile.WriteOnly | QtCore.QFile.Truncate):
+            QtWidgets.QMessageBox.warning(self, "HexEdit",
+                    "Cannot write file %s:\n%s." % (fileName, file.errorString()))
+            return False
+
+        file.write(self.hexEdit.data())
+
+        self.setCurrentFile(fileName)
+        self.statusBar().showMessage("File saved", 2000)
+        return True
+    
+    def saveToReadableFile(self):
+        fileName, _filter = QtWidgets.QFileDialog.getSaveFileName(self, "Save To Readable File")
+        if fileName != "":
+            file = open(str(fileName), "w")
+            file.write(str(self.hexEdit.toReadableString()))
+            self.statusBar().showMessage("File saved", 2000);
+
+    def saveSelectionToReadableFile(self):
+        fileName, _filter = QtWidgets.QFileDialog.getSaveFileName(self, "Save To Readable File")
+        if fileName != "":
+            file = open(str(fileName), "w")
+            file.write(str(self.hexEdit.selectionToReadableString()))
+            self.statusBar().showMessage("File saved", 2000);
+
+    def setCurrentFile(self, fileName):
+        self.curFile = fileName
+        self.isUntitled = (fileName == "")
+        self.setWindowModified(False)
+        self.setWindowTitle("%s[*] - QHexEdit" % self.strippedName(self.curFile))
+
+    def strippedName(self, fullFileName):
+        return QtCore.QFileInfo(fullFileName).fileName()
+
+    def writeSettings(self):
+        settings = QtCore.QSettings()
+        settings.setValue('pos', self.pos())
+        settings.setValue('size', self.size())
+        
+if __name__ == '__main__':
+    app = QtWidgets.QApplication(sys.argv)
+    app.setApplicationName("QHexEdit");
+    app.setOrganizationName("QHexEdit");
+    mainWin = MainWindow()
+    mainWin.show()
+    sys.exit(app.exec())

python/example/example_pyqt5.py

@@ -0,0 +1,8 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>images/open.png</file>
+    <file>images/redo.png</file>
+    <file>images/save.png</file>
+    <file>images/undo.png</file>
+</qresource>
+</RCC>