From 626ce0968605785a591a6b13e7f48d044c07167d Mon Sep 17 00:00:00 2001
From: "[dyad]" <git@dyad.sh>
Date: Sun, 18 Jan 2026 13:25:54 +0100
Subject: [PATCH] [dyad] Implemented "auto" image dimensioning - wrote 1
 file(s)

---
 src/components/image-converter.tsx | 84 ++++++++++++------------------
 1 file changed, 32 insertions(+), 52 deletions(-)

diff --git a/src/components/image-converter.tsx b/src/components/image-converter.tsx
index 7d240f8..250b7ae 100644
--- a/src/components/image-converter.tsx
+++ b/src/components/image-converter.tsx
@@ -38,7 +38,6 @@ import {
 } from "@/components/ui/tooltip";
 
 const aspectRatios = [
-  { name: "Original", value: "original" },
   { name: "Custom", value: "custom" },
   { name: "1:1 (Square)", value: "1/1" },
   { name: "4:3 (Standard)", value: "4/3" },
@@ -71,7 +70,6 @@ export function ImageConverter() {
   const [width, setWidth] = useState<number | string>(initialSettings.width);
   const [height, setHeight] = useState<number | string>(initialSettings.height);
   const [aspectRatio, setAspectRatio] = useState<string>(initialSettings.aspectRatio);
-  const [originalImageRatio, setOriginalImageRatio] = useState<number | null>(null);
   const [keepOrientation, setKeepOrientation] = useState<boolean>(initialSettings.keepOrientation);
   const [format, setFormat] = useState<"png" | "jpeg" | "webp">(initialSettings.format);
   const [quality, setQuality] = useState<number>(initialSettings.quality);
@@ -110,19 +108,6 @@ export function ImageConverter() {
       return;
     }
 
-    if (images.length === 0 && imageFiles.length > 0) {
-      const firstImage = imageFiles[0];
-      const img = new Image();
-      img.src = URL.createObjectURL(firstImage);
-      img.onload = () => {
-        setOriginalImageRatio(img.naturalWidth / img.naturalHeight);
-        setAspectRatio("original");
-        setWidth(img.naturalWidth);
-        setHeight(img.naturalHeight);
-        URL.revokeObjectURL(img.src);
-      };
-    }
-
     const newImages = [...images, ...imageFiles];
     const newPreviewUrls = [
       ...previewUrls,
@@ -174,13 +159,6 @@ export function ImageConverter() {
     setImages(newImages);
     setPreviewUrls(newPreviewUrls);
     setFilenames(newFilenames);
-
-    if (newImages.length === 0) {
-      setOriginalImageRatio(null);
-      setAspectRatio(initialSettings.aspectRatio);
-      setWidth(initialSettings.width);
-      setHeight(initialSettings.height);
-    }
   };
 
   const handleClearAll = () => {
@@ -188,8 +166,6 @@ export function ImageConverter() {
     setImages([]);
     setPreviewUrls([]);
     setFilenames([]);
-    setOriginalImageRatio(null);
-    setAspectRatio(initialSettings.aspectRatio);
     setWidth(initialSettings.width);
     setHeight(initialSettings.height);
     toast.info("All images cleared.");
@@ -221,12 +197,31 @@ export function ImageConverter() {
 
       img.onload = () => {
         const canvas = document.createElement("canvas");
-        let targetWidth = width ? Number(width) : img.naturalWidth;
-        let targetHeight = height ? Number(height) : img.naturalHeight;
+        const sourceRatio = img.naturalWidth / img.naturalHeight;
+        
+        let targetWidth: number;
+        let targetHeight: number;
 
-        if (keepOrientation && width && height) {
+        const inputWidth = width ? Number(width) : 0;
+        const inputHeight = height ? Number(height) : 0;
+
+        if (inputWidth && !inputHeight) {
+            targetWidth = inputWidth;
+            targetHeight = Math.round(targetWidth / sourceRatio);
+        } else if (!inputWidth && inputHeight) {
+            targetHeight = inputHeight;
+            targetWidth = Math.round(targetHeight * sourceRatio);
+        } else if (inputWidth && inputHeight) {
+            targetWidth = inputWidth;
+            targetHeight = inputHeight;
+        } else {
+            targetWidth = img.naturalWidth;
+            targetHeight = img.naturalHeight;
+        }
+
+        if (keepOrientation && (inputWidth || inputHeight)) {
           const isOriginalPortrait = img.naturalHeight > img.naturalWidth;
-          const isTargetPortrait = Number(height) > Number(width);
+          const isTargetPortrait = targetHeight > targetWidth;
           if (isOriginalPortrait !== isTargetPortrait) {
             [targetWidth, targetHeight] = [targetHeight, targetWidth];
           }
@@ -365,14 +360,13 @@ export function ImageConverter() {
     setDefaultBaseName(initialSettings.defaultBaseName);
     setScaleMode(initialSettings.scaleMode);
     setObjectPosition(initialSettings.objectPosition);
-    setOriginalImageRatio(null);
     toast.success("All settings have been reset to their defaults.");
   };
 
   const handleAspectRatioChange = (value: string) => {
     setAspectRatio(value);
 
-    if (value === "custom" || value === "original") {
+    if (value === "custom") {
       return;
     }
 
@@ -396,27 +390,13 @@ export function ImageConverter() {
   };
 
   const handleWidthChange = (e: React.ChangeEvent<HTMLInputElement>) => {
-    const newWidthValue = e.target.value;
-    setWidth(newWidthValue);
-
-    if (aspectRatio === 'original' && originalImageRatio && newWidthValue) {
-        const newHeight = Math.round(Number(newWidthValue) / originalImageRatio);
-        setHeight(newHeight);
-    } else if (aspectRatio !== 'original') {
-        setAspectRatio("custom");
-    }
+    setWidth(e.target.value);
+    setAspectRatio("custom");
   };
 
   const handleHeightChange = (e: React.ChangeEvent<HTMLInputElement>) => {
-    const newHeightValue = e.target.value;
-    setHeight(newHeightValue);
-
-    if (aspectRatio === 'original' && originalImageRatio && newHeightValue) {
-        const newWidth = Math.round(Number(newHeightValue) * originalImageRatio);
-        setWidth(newWidth);
-    } else if (aspectRatio !== 'original') {
-        setAspectRatio("custom");
-    }
+    setHeight(e.target.value);
+    setAspectRatio("custom");
   };
 
   const handleSwapDimensions = () => {
@@ -584,13 +564,13 @@ export function ImageConverter() {
                         </TooltipContent>
                       </Tooltip>
                     </div>
-                    <Select value={aspectRatio} onValueChange={handleAspectRatioChange} disabled={!hasImages && aspectRatio === 'original'}>
+                    <Select value={aspectRatio} onValueChange={handleAspectRatioChange}>
                       <SelectTrigger id="aspect-ratio" className="mt-2">
                         <SelectValue placeholder="Select aspect ratio" />
                       </SelectTrigger>
                       <SelectContent>
                         {aspectRatios.map((ratio) => (
-                          <SelectItem key={ratio.value} value={ratio.value} disabled={ratio.value === 'original' && !originalImageRatio}>
+                          <SelectItem key={ratio.value} value={ratio.value}>
                             {ratio.name}
                           </SelectItem>
                         ))}
@@ -610,7 +590,7 @@ export function ImageConverter() {
                           </TooltipContent>
                         </Tooltip>
                       </div>
-                      <Input id="width" type="number" placeholder="Original" value={width} onChange={handleWidthChange} />
+                      <Input id="width" type="number" placeholder="Auto" value={width} onChange={handleWidthChange} />
                     </div>
                     <Tooltip>
                       <TooltipTrigger asChild>
@@ -634,7 +614,7 @@ export function ImageConverter() {
                           </TooltipContent>
                         </Tooltip>
                       </div>
-                      <Input id="height" type="number" placeholder="Original" value={height} onChange={handleHeightChange} />
+                      <Input id="height" type="number" placeholder="Auto" value={height} onChange={handleHeightChange} />
                     </div>
                   </div>
                   <div className="flex items-center space-x-2 pt-2">