Update alpha blending weight to 0.75 in app.py and implement drag-and-drop functionality for image input.

app.py

@@ -152,14 +152,13 @@ def infer(
         num_images_per_prompt=1,
     ).images
 
-    # Alpha blend: input (0.2) + generated (0.8)
+    # Alpha blend (0.75)
     if result_images and pil_image is not None:
         generated_image = result_images[0]
         # Resize input image to match generated image size if different
         if pil_image.size != generated_image.size:
             pil_image = pil_image.resize(generated_image.size, Image.Resampling.LANCZOS)
-        # Blend: 0.2 * input + 0.8 * generated
-        blended_image = Image.blend(pil_image, generated_image, alpha=0.8)
+        blended_image = Image.blend(pil_image, generated_image, alpha=0.75)
         return blended_image, seed
 
     # Return first result image and seed
@@ -192,7 +191,53 @@ with gr.Blocks(css=css) as demo:
                 input_image = gr.Image(label="Input Image",
                                        show_label=False,
                                        type="pil",
-                                       interactive=True)
+                                       interactive=True,
+                                       elem_id="input-image")
+
+                gr.HTML("""
+                <script>
+                (function () {
+                  function bindDrop() {
+                    var root = document.getElementById("input-image");
+                    if (!root || root.dataset.dropBound === "1") return;
+
+                    var input = root.querySelector('input[type="file"]');
+                    if (!input) return;
+
+                    function prevent(e) {
+                      e.preventDefault();
+                      e.stopPropagation();
+                    }
+
+                    function onDrop(e) {
+                      prevent(e);
+                      var files = e.dataTransfer && e.dataTransfer.files;
+                      if (!files || files.length === 0) return;
+
+                      var dt = new DataTransfer();
+                      dt.items.add(files[0]);
+                      input.files = dt.files;
+                      input.dispatchEvent(new Event("change", { bubbles: true }));
+                    }
+
+                    root.addEventListener("dragenter", prevent, true);
+                    root.addEventListener("dragover", prevent, true);
+                    root.addEventListener("drop", onDrop, true);
+                    root.dataset.dropBound = "1";
+                  }
+
+                  var observer = new MutationObserver(function () {
+                    bindDrop();
+                  });
+                  observer.observe(document.body, { childList: true, subtree: true });
+
+                  window.addEventListener("load", function () {
+                    bindDrop();
+                  });
+                  setTimeout(bindDrop, 1000);
+                })();
+                </script>
+                """)
 
             with gr.Column(scale=1):
                 gr.Markdown("### 📤 Result")
@@ -280,4 +325,4 @@ with gr.Blocks(css=css) as demo:
     )
 
 if __name__ == "__main__":
-    demo.launch(mcp_server=True)
+    demo.launch(mcp_server=True)