update at 2026-02-11 19:39:59

frontend/src/components/SvgPreview.vue

@@ -69,6 +69,10 @@ const visiblePreviewItems = computed(() => {
   return previewItems.value.slice(0, renderedPreviewCount.value)
 })
 
+const hasRenderableInput = computed(() => {
+  return inputText.value.trim() !== '' && activePreviewFonts.value.length > 0
+})
+
 const previewTriggerIndex = computed(() => {
   if (!hasMorePreviewItems.value || visiblePreviewItems.value.length <= 0) {
     return -1
@@ -470,6 +474,8 @@ async function regeneratePreviews() {
 
   if (!inputText.value || inputText.value.trim() === '' || nextPreviewFonts.length === 0) {
     isGenerating.value = false
+    isBatchGenerating.value = false
+    batchOwnerToken = null
     return
   }
 
@@ -477,6 +483,14 @@ async function regeneratePreviews() {
 
   try {
     await loadNextPreviewBatch(generationToken)
+    if (
+      !isStaleGeneration(generationToken) &&
+      previewItems.value.length === 0 &&
+      processedFontCount.value < activePreviewFonts.value.length &&
+      !isBatchGenerating.value
+    ) {
+      await loadNextPreviewBatch(generationToken)
+    }
     if (
       !isStaleGeneration(generationToken) &&
       previewItems.value.length === 0 &&
@@ -571,9 +585,9 @@ defineExpose({
               previewErrorMessage
                 ? previewErrorMessage
                 : (
-                    inputText.trim() === '' || previewFonts.length === 0
+                    inputText.trim() === '' || activePreviewFonts.length === 0
                       ? '请选择字体并输入内容'
-                      : '暂无可显示预览'
+                      : (hasRenderableInput ? '暂无可显示预览' : '请选择字体并输入内容')
                   )
             )
       }}