class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self._create_actions()
self._create_toolbar()
self._canvas = Canvas()
self._canvas.scale(16, 16)
self.setCentralWidget(self._canvas)
def _create_actions(self):
self._delete_action = QAction("Delete", None)
self._delete_action.setShortcuts(QKeySequence.Delete)
self._delete_action.triggered.connect(self._delete)
self._select_action = QAction("Select", None)
self._select_action.setCheckable(True)
self._select_action.triggered.connect(self._use_select_tool)
self._pen_action = QAction("Pen", None)
self._pen_action.setCheckable(True)
self._pen_action.setChecked(True)
self._pen_action.triggered.connect(self._use_pen_tool)
self._new_shape_action = QAction("New Shape", None)
self._new_shape_action.triggered.connect(self._new_shape)
self._tool_group = QActionGroup(None)
self._tool_group.addAction(self._select_action)
self._tool_group.addAction(self._pen_action)
def _create_toolbar(self):
toolbar = self.addToolBar("Tools")
toolbar.addAction(self._delete_action)
toolbar.addAction(self._select_action)
toolbar.addAction(self._pen_action)
toolbar.addAction(self._new_shape_action)
def _use_select_tool(self):
self._canvas.use_tool(SelectTool)
def _use_pen_tool(self):
self._canvas.use_tool(PenTool)
def _new_shape(self):
self._canvas.new_shape()
def _delete(self):
self._canvas.delete_selection()