🎉 Add zoom in and out shortcut

pyflow/graphics/view.py

@@ -27,6 +27,7 @@
 BLOCKFILES_PATH = os.path.join(BLOCK_PATH, "blockfiles")
 
 EPS: float = 1e-10  # To check if blocks are of size 0
+ZOOM_INCREMENT = 1.2
 LOGGER = get_logger(__name__)
 
 
@@ -376,6 +377,16 @@ def setZoom(self, new_zoom: float):
         self.scale(zoom_factor, zoom_factor)
         self.zoom = new_zoom
 
+    def zoomIn(self):
+        """Zoom in."""
+
+        self.setZoom(self.zoom * ZOOM_INCREMENT)
+
+    def zoomOut(self):
+        """Zoom out"""
+
+        self.setZoom(self.zoom / ZOOM_INCREMENT)
+
     def deleteSelected(self):
         """Delete selected items from the current scene."""
         scene = self.scene()
@@ -510,8 +521,10 @@ def drag_edge(self, event: QMouseEvent, action="press"):
             ):
                 # Link a new CodeBlock under the selected block
                 parent: CodeBlock = item_at_click.block
-                empty_code_block_path: str = os.path.join(BLOCKFILES_PATH, "empty.pfb") 
-                new_block = self.scene().create_block_from_file(empty_code_block_path, 0, 0)
+                empty_code_block_path: str = os.path.join(BLOCKFILES_PATH, "empty.pfb")
+                new_block = self.scene().create_block_from_file(
+                    empty_code_block_path, 0, 0
+                )
                 parent.link_and_place(new_block)
                 scene.history.checkpoint(
                     "Created a new linked block", set_modified=True

pyflow/graphics/window.py

@@ -181,6 +181,18 @@ def createActions(self):
             shortcut=" ",
             triggered=self.onMoveToItems,
         )
+        self._actZoomIn = QAction(
+            "Zoom in",
+            statusTip="Zoom in",
+            shortcut=QKeySequence.ZoomIn,
+            triggered=self.onZoomIn,
+        )
+        self._actZoomOut = QAction(
+            "Zoom out",
+            statusTip="Zoom out",
+            shortcut=QKeySequence.ZoomOut,
+            triggered=self.onZoomOut,
+        )
 
         # Window
         self._actClose = QAction(
@@ -252,6 +264,8 @@ def createMenus(self):
         self.thememenu = self.viewmenu.addMenu("Theme")
         self.thememenu.aboutToShow.connect(self.updateThemeMenu)
         self.viewmenu.addAction(self._actViewItems)
+        self.viewmenu.addAction(self._actZoomIn)
+        self.viewmenu.addAction(self._actZoomOut)
 
         self.windowMenu = self.menuBar().addMenu("&Window")
         self.updateWindowMenu()
@@ -543,6 +557,18 @@ def onMoveToItems(self):
         if current_window is not None and isinstance(current_window, Widget):
             current_window.moveToItems()
 
+    def onZoomIn(self):
+        """Zoom in, in the current window.."""
+        current_window = self.activeMdiChild()
+        if current_window is not None and isinstance(current_window, Widget):
+            current_window.view.zoomIn()
+
+    def onZoomOut(self):
+        """Zoom out, in the current window."""
+        current_window = self.activeMdiChild()
+        if current_window is not None and isinstance(current_window, Widget):
+            current_window.view.zoomOut()
+
     def setTheme(self, theme_index):
         """Set the theme of the application."""
         theme_manager().selected_theme_index = theme_index