Merge pull request #824 from dfaker/patch-6

Aspect ratio overlay on img2img 

javascript/aspectRatioOverlay.js

+
+let currentWidth = null;
+let currentHeight = null;
+let arFrameTimeout = setTimeout(function(){},0);
+
+function dimensionChange(e,dimname){
+
+	if(dimname == 'Width'){
+		currentWidth = e.target.value*1.0
+	}
+	if(dimname == 'Height'){
+		currentHeight = e.target.value*1.0
+	}
+
+	var inImg2img   = Boolean(gradioApp().querySelector("button.rounded-t-lg.border-gray-200"))
+
+	if(!inImg2img){
+		return;
+	}
+
+	var img2imgMode = gradioApp().querySelector("input[name=radio-img2img_mode]:checked")
+	if(img2imgMode){
+		img2imgMode=img2imgMode.value
+	}else{
+		return;
+	}
+
+	var redrawImage = gradioApp().querySelector('div[data-testid=image] img');
+	var inpaintImage = gradioApp().querySelector('#img2maskimg div[data-testid=image] img')
+
+	var targetElement = null;
+
+	if(img2imgMode=='Redraw whole image' && redrawImage){
+		targetElement = redrawImage;
+	}else if(img2imgMode=='Inpaint a part of image' && inpaintImage){
+		targetElement = inpaintImage;
+	}else if(img2imgMode=='SD upscale' && redrawImage){
+		targetElement = redrawImage;
+	}
+
+	if(targetElement){
+
+		var arPreviewRect = gradioApp().querySelector('#imageARPreview');
+		if(!arPreviewRect){
+		    arPreviewRect = document.createElement('div')
+		    arPreviewRect.id = "imageARPreview";
+		    gradioApp().getRootNode().appendChild(arPreviewRect)
+		}
+
+
+
+		var viewportOffset = targetElement.getBoundingClientRect();
+
+		viewportscale = Math.min(  targetElement.clientWidth/targetElement.naturalWidth, targetElement.clientHeight/targetElement.naturalHeight )
+
+		scaledx = targetElement.naturalWidth*viewportscale
+		scaledy = targetElement.naturalHeight*viewportscale
+
+		cleintRectTop    = (viewportOffset.top+window.scrollY)
+		cleintRectLeft   = (viewportOffset.left+window.scrollX)
+		cleintRectCentreY = cleintRectTop  + (targetElement.clientHeight/2)
+		cleintRectCentreX = cleintRectLeft + (targetElement.clientWidth/2)
+
+		viewRectTop    = cleintRectCentreY-(scaledy/2)
+		viewRectLeft   = cleintRectCentreX-(scaledx/2)
+		arRectWidth  = scaledx
+		arRectHeight = scaledy
+
+		arscale = Math.min(  arRectWidth/currentWidth, arRectHeight/currentHeight )
+		arscaledx = currentWidth*arscale
+		arscaledy = currentHeight*arscale
+
+		arRectTop    = cleintRectCentreY-(arscaledy/2)
+		arRectLeft   = cleintRectCentreX-(arscaledx/2)
+		arRectWidth  = arscaledx
+		arRectHeight = arscaledy
+
+	    arPreviewRect.style.top  = arRectTop+'px';
+	    arPreviewRect.style.left = arRectLeft+'px';
+	    arPreviewRect.style.width = arRectWidth+'px';
+	    arPreviewRect.style.height = arRectHeight+'px';
+
+	    clearTimeout(arFrameTimeout);
+	    arFrameTimeout = setTimeout(function(){
+	    	arPreviewRect.style.display = 'none';
+	    },2000);
+
+	    arPreviewRect.style.display = 'block';
+
+	}
+
+}
+
+
+onUiUpdate(function(){
+	var arPreviewRect = gradioApp().querySelector('#imageARPreview');
+	if(arPreviewRect){
+		arPreviewRect.style.display = 'none';
+	}
+	var inImg2img   = Boolean(gradioApp().querySelector("button.rounded-t-lg.border-gray-200"))
+	if(inImg2img){
+		let inputs = gradioApp().querySelectorAll('input');
+		inputs.forEach(function(e){ 
+			let parentLabel = e.parentElement.querySelector('label')
+			if(parentLabel && parentLabel.innerText){
+				if(!e.classList.contains('scrollwatch')){
+					if(parentLabel.innerText == 'Width' || parentLabel.innerText == 'Height'){
+						e.addEventListener('input', function(e){dimensionChange(e,parentLabel.innerText)} )
+						e.classList.add('scrollwatch')
+					}
+					if(parentLabel.innerText == 'Width'){
+						currentWidth = e.value*1.0
+					}
+					if(parentLabel.innerText == 'Height'){
+						currentHeight = e.value*1.0
+					}
+				}
+			} 
+		})
+	}
+});
+
+
+

style.css

@@ -337,6 +337,17 @@ input[type="range"]{
   background-color: rgba(0, 0, 0, 0.8);
 }
 
+#imageARPreview{
+    position:absolute;
+    top:0px;
+    left:0px;
+    border:2px solid red;
+    background:rgba(255, 0, 0, 0.3);
+    z-index: 900;
+    pointer-events:none;
+    display:none
+}
+
 #interrupt{
   position: absolute;
   width: 100%;