Fix trailing whitespace in Live Preview node

Co-authored-by: jags111 <5968619+jags111@users.noreply.github.com>

.gitignore

@@ -0,0 +1,21 @@
+# Python cache
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+
+# Virtual environments
+venv/
+env/
+ENV/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

README.md

@@ -131,6 +131,17 @@ Please check out our WIKI for any use cases and new developments including workf
   <img src="https://github.com/LucianoCirino/efficiency-nodes-media/blob/main/images/nodes/Image%20Overlay%20-%20Node%20Example.png" width="1080">
 </p>
  
+</details>
+<!-------------------------------------------------------------------------------------------------------------------------------------------------------->
+<details>
+    <summary><b>Live Preview (Eff.)</b></summary>
+<ul>
+    <li>Node that displays a live preview of images while allowing them to pass through to other nodes in the workflow.</li>
+    <li>Can be connected to multiple samplers sequentially to show progressive updates as the workflow advances through different stages (base sampling, refining, hi-res fix, detailing, etc.).</li>
+    <li>Useful for placing preview displays outside of subgraphs or in custom locations within complex workflows.</li>
+    <li>Simply connect the IMAGE output from any sampler or image processing node to this node's input, and connect its output to continue the workflow.</li>
+</ul>
+ 
 </details>
 <!-------------------------------------------------------------------------------------------------------------------------------------------------------->
 <details>

efficiency_nodes.py

@@ -4013,6 +4013,34 @@ class TSC_ImageOverlay:
         # Return the edited base image
         return (base_image,)
 
+########################################################################################################################
+# TSC Live Preview Node
+class TSC_LivePreview:
+    
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "images": ("IMAGE",),
+            },
+            "hidden": {
+                "prompt": "PROMPT",
+                "extra_pnginfo": "EXTRA_PNGINFO"
+            },
+        }
+    
+    RETURN_TYPES = ("IMAGE",)
+    FUNCTION = "preview_image"
+    OUTPUT_NODE = True
+    CATEGORY = "Efficiency Nodes/Image"
+    
+    def preview_image(self, images, prompt=None, extra_pnginfo=None):
+        # Generate preview using ComfyUI's PreviewImage node
+        preview = PreviewImage().save_images(images, prompt=prompt, extra_pnginfo=extra_pnginfo)["ui"]
+        
+        # Return both the preview for UI and the original images for pass-through
+        return {"ui": preview, "result": (images,)}
+
 ########################################################################################################################
 # Noise Sources & Seed Variations
 # https://github.com/shiimizu/ComfyUI_smZNodes
@@ -4288,6 +4316,7 @@ NODE_CLASS_MAPPINGS = {
     "Manual XY Entry Info": TSC_XYplot_Manual_XY_Entry_Info,
     "Join XY Inputs of Same Type": TSC_XYplot_JoinInputs,
     "Image Overlay": TSC_ImageOverlay,
+    "Live Preview (Eff.)": TSC_LivePreview,
     "Noise Control Script": TSC_Noise_Control_Script,
     "HighRes-Fix Script": TSC_HighRes_Fix,
     "Tiled Upscaler Script": TSC_Tiled_Upscaler,

js/seedcontrol.js

@@ -117,10 +117,7 @@ class SeedControl {
                 this.updateButtonLabel();
             }
 
-            // Don't update the widget value to maintain -1 in the UI when seed was special
+            this.seedWidget.value = this.serializedCtx.seedUsed;
-            if (!this.serializedCtx.wasSpecial) {
-                this.seedWidget.value = this.serializedCtx.seedUsed;
-            }
 
             if (this.serializedCtx.wasSpecial) {
                 this.lastSeed = this.serializedCtx.seedUsed;
@@ -136,8 +133,12 @@ class SeedControl {
                 return; // Exit the function immediately
             }
 
-            // Update lastSeed if user manually changed the seed to a specific value
+            if (this.serializedCtx.wasSpecial) {
-            if (!this.serializedCtx.wasSpecial && this.seedWidget.value !== -1) {
+                this.seedWidget.value = -1;
+            }
+
+            // Check if seed has changed to a non -1 value, and if so, update lastSeed
+            if (this.seedWidget.value !== -1) {
                 this.lastSeed = this.seedWidget.value;
             }