--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HexEdit/HexEditGotoWidget.py Sun Jan 17 11:23:17 2016 +0100
@@ -0,0 +1,157 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2016 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a movement (goto) widget for the hex editor.
+"""
+
+from __future__ import unicode_literals
+
+from PyQt5.QtCore import pyqtSlot, Qt, QRegExp
+from PyQt5.QtGui import QRegExpValidator
+from PyQt5.QtWidgets import QWidget
+
+from .Ui_HexEditGotoWidget import Ui_HexEditGotoWidget
+
+import UI.PixmapCache
+
+
+class HexEditGotoWidget(QWidget, Ui_HexEditGotoWidget):
+ """
+ Class implementing a movement (goto) widget for the hex editor.
+ """
+ def __init__(self, editor, parent=None):
+ """
+ Constructor
+
+ @param editor reference to the hex editor widget
+ @type HexEditWidget
+ @param parent reference to the parent widget
+ @type QWidget
+ """
+ super(HexEditGotoWidget, self).__init__(parent)
+ self.setupUi(self)
+
+ self.__editor = editor
+
+ # keep this in sync with the logic in __getContent()
+ self.__formatAndValidators = {
+ "hex": (self.tr("Hex"), QRegExpValidator((QRegExp("[0-9a-f]*")))),
+ "dec": (self.tr("Dec"), QRegExpValidator((QRegExp("[0-9]*")))),
+ }
+ formatOrder = ["hex", "dec"]
+
+ self.__currentFormat = ""
+
+ self.closeButton.setIcon(UI.PixmapCache.getIcon("close.png"))
+
+ for format in formatOrder:
+ formatStr, validator = self.__formatAndValidators[format]
+ self.formatCombo.addItem(formatStr, format)
+
+ self.formatCombo.setCurrentIndex(0)
+
+ @pyqtSlot()
+ def on_closeButton_clicked(self):
+ """
+ Private slot to close the widget.
+ """
+ self.__editor.setFocus(Qt.OtherFocusReason)
+ self.close()
+
+ @pyqtSlot(int)
+ def on_formatCombo_currentIndexChanged(self, idx):
+ """
+ Private slot to handle a selection of the format.
+
+ @param idx index of the selected entry
+ @type int
+ """
+ if idx >= 0:
+ format = self.formatCombo.itemData(idx)
+
+ if format != self.__currentFormat:
+ txt = self.offsetEdit.text()
+ newTxt = self.__convertText(
+ txt, self.__currentFormat, format)
+ self.__currentFormat = format
+
+ self.offsetEdit.setValidator(
+ self.__formatAndValidators[format][1])
+
+ self.offsetEdit.setText(newTxt)
+
+ @pyqtSlot(str)
+ def on_offsetEdit_textChanged(self, offset):
+ """
+ Private slot handling a change of the entered offset.
+
+ @param offset entered offset
+ @type str
+ """
+ self.gotoButton.setEnabled(bool(offset))
+
+ @pyqtSlot()
+ def on_gotoButton_clicked(self):
+ """
+ Private slot to move the cursor and extend the selection.
+ """
+ format = self.formatCombo.itemData(self.formatCombo.currentIndex())
+ if format == "hex":
+ offset = int(self.offsetEdit.text(), 16)
+ else:
+ offset = int(self.offsetEdit.text(), 10)
+
+ fromCursor = self.cursorCheckBox.isChecked()
+ backwards = self.backCheckBox.isChecked()
+ extendSelection = self.selectionCheckBox.isChecked()
+
+ self.__editor.goto(offset, fromCursor=fromCursor, backwards=backwards,
+ extendSelection=extendSelection)
+
+ def show(self):
+ """
+ Public slot to show the widget.
+ """
+ self.offsetEdit.setFocus()
+ super(HexEditGotoWidget, self).show()
+
+ def keyPressEvent(self, event):
+ """
+ Protected slot to handle key press events.
+
+ @param event reference to the key press event
+ @type QKeyEvent
+ """
+ if event.key() == Qt.Key_Escape:
+ self.close()
+
+ def __convertText(self, txt, oldFormat, newFormat):
+ """
+ Private method to convert text from one format into another.
+
+ @param txt text to be converted
+ @type str
+ @param oldFormat current format of the text
+ @type str
+ @param newFormat format to convert to
+ @type str
+ @return converted text
+ @rtype str
+ """
+ if oldFormat and newFormat:
+ # step 1: convert the text to an integer using the old format
+ if oldFormat == "hex":
+ index = int(txt, 16)
+ else:
+ index = int(txt, 10)
+
+ # step 2: convert the integer to text using the new format
+ if newFormat == "hex":
+ txt = "{0:x}".format(index)
+ else:
+ txt = "{0:d}".format(index)
+
+ return txt
