Resolve "Resize GUI Window"

Also fixed some smaller things like port crashing when dragging, modifier for zooming and the lag when dragging initially. Closes #87 (closed)

b_asic/GUI/drag_button.py

@@ -26,6 +26,8 @@ class DragButton(QPushButton):
         self.operation_path_name = operation_path_name
         self.clicked = 0
         self.pressed = False
+        self._mouse_press_pos = None
+        self._mouse_move_pos = None
         super(DragButton, self).__init__(self._window)
 
     def contextMenuEvent(self, event):
@@ -35,20 +37,18 @@ class DragButton(QPushButton):
         properties.triggered.connect(self.show_properties_window)
         menu.exec_(self.cursor().pos())
 
-    def show_properties_window(self):
-        self.properties_window = PropertiesWindow(self, self.__window)
+    def show_properties_window(self, event):
+        self.properties_window = PropertiesWindow(self, self._window)
         self.properties_window.show()
-    
+
     def add_label(self, label):
         self.label = label
 
     def mousePressEvent(self, event):
-        self._mouse_press_pos = None
-        self._mouse_move_pos = None
 
         if event.button() == Qt.LeftButton:
-            self._mouse_press_pos = event.globalPos()
-            self._mouse_move_pos = event.globalPos()
+            self._mouse_press_pos = event.pos()
+            self._mouse_move_pos = event.pos()
 
             for signal in self._window.signalList:
                 signal.update()
@@ -77,20 +77,14 @@ class DragButton(QPushButton):
 
     def mouseMoveEvent(self, event):
         if event.buttons() == Qt.LeftButton:
-            cur_pos = self.mapToGlobal(self.pos())
-            global_pos = event.globalPos()
-            diff = global_pos - self._mouse_move_pos
-            new_pos = self.mapFromGlobal(cur_pos + diff)
-            self.move(new_pos)
-
-            self._mouse_move_pos = global_pos
+            self.move(self.mapToParent(event.pos() - self._mouse_press_pos))
 
         self._window.update()
         super(DragButton, self).mouseMoveEvent(event)
 
     def mouseReleaseEvent(self, event):
         if self._mouse_press_pos is not None:
-            moved = event.globalPos() - self._mouse_press_pos
+            moved = event.pos() - self._mouse_press_pos
             if moved.manhattanLength() > 3:
                 event.ignore()
                 return