Fix bug#125 - "QAbstractTextDocumentLayout.registerHandler apparently not working"

Added class QPyTextObject which inherits from QObject and QTextObjectInterface to
solve the issue with registerHandler, the same approach used by PyQt.

Reviewer: Luciano Wolf <luciano.wolf@openbossa.org>
          Renato Araújo <renato.filho@openbossa.org>

tests/QtGui/CMakeLists.txt

@@ -14,6 +14,7 @@ PYSIDE_TEST(missing_symbols_test.py)
 PYSIDE_TEST(paint_event_test.py)
 PYSIDE_TEST(parent_method_test.py)
 PYSIDE_TEST(python_properties_test.py)
+PYSIDE_TEST(qabstracttextdocumentlayout_test.py)
 PYSIDE_TEST(qapplication_exit_segfault_test.py)
 PYSIDE_TEST(qapplication_singleton_test.py)
 PYSIDE_TEST(qapp_test.py)

tests/QtGui/qabstracttextdocumentlayout_test.py

@@ -0,0 +1,46 @@
+import unittest
+import colorsys
+
+from PySide.QtCore import *
+from PySide.QtGui import *
+from helper import UsesQApplication
+
+class Foo(QPyTextObject):
+    called = False
+
+    def intrinsicSize(self, doc, posInDocument, format):
+        Foo.called = True
+        return QSizeF(10, 10)
+
+    def drawObject(self, painter, rect, doc, posInDocument, format):
+        pass
+
+class QAbstractTextDocumentLayoutTest(UsesQApplication):
+
+    objectType = QTextFormat.UserObject + 1
+
+    def foo(self):
+        fmt = QTextCharFormat()
+        fmt.setObjectType(QAbstractTextDocumentLayoutTest.objectType)
+
+        cursor = self.textEdit.textCursor()
+        cursor.insertText(unichr(0xfffc), fmt)
+        self.textEdit.setTextCursor(cursor)
+        self.textEdit.close()
+
+    def testIt(self):
+
+        self.textEdit = QTextEdit()
+        self.textEdit.show()
+
+        interface = Foo()
+        self.textEdit.document().documentLayout().registerHandler(QAbstractTextDocumentLayoutTest.objectType, interface)
+
+        QTimer.singleShot(0, self.foo)
+        self.app.exec_()
+
+        self.assertTrue(Foo.called)
+
+if __name__ == "__main__":
+    unittest.main()
+