Resolve "Simulate SFG in GUI"

Implemented the GUI handling of simulation of an SFG, also fixed some other stuff like new selection handling (any bugs are features), naming sfg, etc. Closes #88 (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._m_press = False
+        self._m_drag = False
         self._mouse_press_pos = None
         self._mouse_move_pos = None
         super(DragButton, self).__init__(self._window)
@@ -37,7 +39,7 @@ class DragButton(QPushButton):
         properties.triggered.connect(self.show_properties_window)
         menu.exec_(self.cursor().pos())
 
-    def show_properties_window(self, event):
+    def show_properties_window(self):
         self.properties_window = PropertiesWindow(self, self._window)
         self.properties_window.show()
 
@@ -45,55 +47,66 @@ class DragButton(QPushButton):
         self.label = label
 
     def mousePressEvent(self, event):
-
         if event.button() == Qt.LeftButton:
+            self._m_press = True
             self._mouse_press_pos = event.pos()
             self._mouse_move_pos = event.pos()
 
-            for signal in self._window.signalList:
-                signal.update()
-
-            self.clicked += 1
-            if self.clicked == 1:
-                self.pressed = True
-                self.setStyleSheet("background-color: grey; border-style: solid;\
-                border-color: black; border-width: 2px; border-radius: 10px")
-                self.setStyleSheet(""" QToolTip { background-color: white;
-                color: black }""")
-                path_to_image = os.path.join('operation_icons', self.operation_path_name + '_grey.png')
-                self.setIcon(QIcon(path_to_image))
-                self.setIconSize(QSize(55, 55))
-                self._window.pressed_operations.append(self)
-
-            elif self.clicked == 2:
-                self.clicked = 0
-                self.pressed = False
-                self.setStyleSheet("background-color: white; border-style: solid;\
-                border-color: black; border-width: 2px; border-radius: 10px")
-                self.setStyleSheet(""" QToolTip { background-color: white;
-                color: black}""")
-                path_to_image = os.path.join('operation_icons', self.operation_path_name + '.png')
-                self.setIcon(QIcon(path_to_image))
-                self.setIconSize(QSize(55, 55))
-                self._window.pressed_operations.remove(self)
-
         super(DragButton, self).mousePressEvent(event)
 
     def mouseMoveEvent(self, event):
-        if event.buttons() == Qt.LeftButton:
+        if event.buttons() == Qt.LeftButton and self._m_press:
+            self._m_drag = True
             self.move(self.mapToParent(event.pos() - self._mouse_press_pos))
+            for button in self._window.pressed_operations:
+                if button is self:
+                    continue
+
+                button.move(button.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.pos() - self._mouse_press_pos
-            if moved.manhattanLength() > 3:
-                event.ignore()
-                return
+        self._m_press = False
+        if self._m_drag:
+            if self._mouse_press_pos is not None:
+                moved = event.pos() - self._mouse_press_pos
+                if moved.manhattanLength() > 3:
+                    event.ignore()
+
+            self._m_drag = False
+
+        else:
+            self.select_button(event.modifiers())
 
         super(DragButton, self).mouseReleaseEvent(event)
 
+    def _toggle_button(self, pressed=False):
+        self.pressed = not pressed
+        self.setStyleSheet(f"background-color: {'white' if not self.pressed else 'grey'}; border-style: solid;\
+        border-color: black; border-width: 2px")
+        path_to_image = os.path.join('operation_icons', f"{self.operation_path_name}{'_grey.png' if self.pressed else '.png'}")
+        self.setIcon(QIcon(path_to_image))
+        self.setIconSize(QSize(55, 55))
+
+    def select_button(self, modifiers=None):
+        if modifiers != Qt.ControlModifier:
+            for button in self._window.pressed_operations:
+                button._toggle_button(button.pressed)
+
+            self._toggle_button(self.pressed)
+            self._window.pressed_operations = [self]
+
+        else:
+            self._toggle_button(self.pressed)
+            if self in self._window.pressed_operations:
+                self._window.pressed_operations.remove(self)
+            else:
+                self._window.pressed_operations.append(self)
+
+        for signal in self._window.signalList:
+            signal.update()
+
     def remove(self):
         self.deleteLater()
\ No newline at end of file