feat: image file preview

display/pkg/image.go

@@ -0,0 +1,19 @@
+package pkg
+
+import "image"
+
+func ResizeImage(img image.Image, newWidth, newHeight int) image.Image {
+	srcBounds := img.Bounds()
+	srcWidth := srcBounds.Dx()
+	srcHeight := srcBounds.Dy()
+	dst := image.NewRGBA(image.Rect(0, 0, newWidth, newHeight))
+	for y := range newHeight {
+		for x := range newWidth {
+			srcX := x * srcWidth / newWidth
+			srcY := y * srcHeight / newHeight
+			c := img.At(srcBounds.Min.X+srcX, srcBounds.Min.Y+srcY)
+			dst.Set(x, y, c)
+		}
+	}
+	return dst
+}