Add show/hide preview option for canvas image preview

Introduces a new 'show_preview' boolean option to CanvasNode and UI, allowing users to toggle the visibility of the canvas image preview widget. Updates Canvas.js with a setPreviewVisibility method to control the preview's display and size, and hooks this logic into CanvasView.js to respond to the new option. Adds detailed debug logging for widget state and size changes.

js/CanvasView.js

@@ -385,6 +385,8 @@ async function createCanvasWidget(node, widget, app) {
             flex-direction: column;
             position: relative;
         }
+
+
     `;
     document.head.appendChild(style);
 
@@ -945,7 +947,7 @@ async function createCanvasWidget(node, widget, app) {
     const updateOutput = async () => {
         triggerWidget.value = (triggerWidget.value + 1) % 99999999;
         
-        // Aktualizuj podgląd node z maską jako alpha
+        // ZAWSZE generuj obraz (potrzebny dla funkcji masek)
         try {
             const new_preview = new Image();
             const blob = await canvas.getFlattenedCanvasWithMaskAsBlob();
@@ -1107,6 +1109,33 @@ async function createCanvasWidget(node, widget, app) {
 
     node.canvasWidget = canvas;
 
+    console.log('Canvas widget element:', node.element);
+    console.log('Canvas widget canvas:', node.canvas);
+    console.log('Canvas widget parent:', node.parent);
+    
+
+    // Konfiguracja opcji ukrywania podglądu
+    const showPreviewWidget = node.widgets.find(w => w.name === "show_preview");
+    if (showPreviewWidget) {
+        const originalCallback = showPreviewWidget.callback;
+        
+        showPreviewWidget.callback = function(value) {
+            if (originalCallback) {
+                originalCallback.call(this, value);
+            }
+            
+            // Kontroluj widoczność podglądu w Canvas
+            if (canvas && canvas.setPreviewVisibility) {
+                canvas.setPreviewVisibility(value);
+            }
+            
+            // Wymuś przerysowanie node'a
+            if (node.graph && node.graph.canvas) {
+                node.setDirtyCanvas(true, true);
+            }
+        };
+    }
+
     setTimeout(() => {
         canvas.loadInitialState();
     }, 100);