chore(examples): improve example for replace image

Author: loonghao

examples/files/green_130x260.png

@@ -1,13 +1,34 @@
 """Replace the image of the current active layer with a new image."""
 
+# Import third-party modules
+import examples._psd_files as psd  # Import from examples.
 
 # Import local modules
 from photoshop import Session
 
 
-with Session() as ps:
+PSD_FILE = psd.get_psd_files()
+
+
+with Session(PSD_FILE["replace_images.psd"], action="open") as ps:
+    active_layer = ps.active_document.activeLayer
+    bounds = active_layer.bounds
+    print(f"current layer {active_layer.name}: {bounds}")
+    input_file = PSD_FILE["red_100x200.png"]
     replace_contents = ps.app.stringIDToTypeID("placedLayerReplaceContents")
     desc = ps.ActionDescriptor
     idnull = ps.app.charIDToTypeID("null")
-    desc.putPath(idnull, "your/image/path.jpg")
+    desc.putPath(idnull, input_file)
     ps.app.executeAction(replace_contents, desc)
+
+    # replaced image.
+    active_layer = ps.active_document.activeLayer
+    current_bounds = active_layer.bounds
+    width = bounds[2] - bounds[0]
+    height = bounds[3] - bounds[1]
+
+    current_width = current_bounds[2] - current_bounds[0]
+    current_height = current_bounds[3] - current_bounds[1]
+    new_size = width / current_width * 100
+    active_layer.resize(new_size, new_size, ps.AnchorPosition.MiddleCenter)
+    print(f"current layer {active_layer.name}: {current_bounds}")