[gnue] r8885 - trunk/gnue-forms/src/uidrivers/qt3/widgets

[johannes]

Author: johannes
Date: 2006-10-20 05:22:53 -0500 (Fri, 20 Oct 2006)
New Revision: 8885

Modified:
   trunk/gnue-forms/src/uidrivers/qt3/widgets/entry.py
Log:
Improved MultiLine text edits


Modified: trunk/gnue-forms/src/uidrivers/qt3/widgets/entry.py
===================================================================
--- trunk/gnue-forms/src/uidrivers/qt3/widgets/entry.py 2006-10-20 08:35:01 UTC 
(rev 8884)
+++ trunk/gnue-forms/src/uidrivers/qt3/widgets/entry.py 2006-10-20 10:22:53 UTC 
(rev 8885)
@@ -482,33 +482,93 @@
         qt.QLineEdit.__init__(self, parent)
         BaseEntry.__init__(self, ui_widget, qt.QTextEdit)
 
+        self.__last_para = 0
+        self.__last_pos = 0
+
         self.setTextFormat(qt.Qt.PlainText)
 
+        self.connect(self, qt.SIGNAL('textChanged()'),
+                self.__on_text_changed)
+        self.connect(self, qt.SIGNAL('cursorPositionChanged(int, int)'),
+                self.__on_cursor_changed)
+
     # -------------------------------------------------------------------------
     # UI slots
     # -------------------------------------------------------------------------
 
     def _ui_set_value_(self, value):
 
-        # TODO: check for newlines (and paragraph handling)
         self.setText(value)
 
     # -------------------------------------------------------------------------
 
     def _ui_set_cursor_position_(self, position):
 
-        # TODO: what about other paragraphs ?
-        self.setCursorPosition(0, position)
+        (para, offset) = self.__position_to_qt(position)
+        self.setCursorPosition(para, offset)
 
     # -------------------------------------------------------------------------
 
     def _ui_set_selected_area_(self, selection1, selection2):
 
-        self.setSelection(0, selection1, 0, selection2)
+        (para1, offs1) = self.__position_to_qt(selection1)
+        (para2, offs2) = self.__position_to_qt(selection2)
 
+        self.setSelection(para1, offs1, para2, offs2)
 
 
+    # -------------------------------------------------------------------------
+    # Qt-Signals
+    # -------------------------------------------------------------------------
 
+    def __on_text_changed(self):
+
+        # FIXME: This signal is fired twice when a selection get's replaced by
+        # a new text.  By doing this and the lack of a working
+        # getCursorPosition() replacing selected text does not work properly.
+        if not self.ui_widget._block_change_:
+            self.ui_widget._request('REPLACEVALUE', text=unicode(self.text()),
+                    position=self.__qt_to_position() + 1)
+
+    # -------------------------------------------------------------------------
+
+    def __on_cursor_changed(self, para, pos):
+
+        # pyQT has a broken getCursorPosition(), so we have no chance to find
+        # out where the cursor is currently located.  That's the reason for
+        # doing it this way.
+        self.__last_para = para
+        self.__last_pos = pos
+
+
+    # -------------------------------------------------------------------------
+    # Map a QT position into a GF position
+    # -------------------------------------------------------------------------
+
+    def __qt_to_position(self):
+
+        result = self.__last_pos + self.__last_para
+        for i in range(self.__last_para):
+            result += self.paragraphLength(i)
+
+        return result
+
+
+    # -------------------------------------------------------------------------
+    # Map a GF position into a QT position
+    # -------------------------------------------------------------------------
+
+    def __position_to_qt(self, position):
+
+        val = unicode(self.text())[:position]
+        para = val.count('\n')
+        offset = position
+        if para > 0:
+            offset = len(val.split('\n')[-1])
+
+        return (para, offset)
+
+
 # =============================================================================
 # Checkbox (TriState)
 # =============================================================================