fix export bug

src-tauri/src/lib.rs

@@ -144,7 +144,7 @@ fn parse_hex_color(hex: &str) -> image::Rgba<u8> {
 }
 
 #[tauri::command]
-async fn export_batch(images: Vec<ExportImageTask>, watermark: WatermarkSettings, output_dir: String) -> Result<String, String> {
+async fn export_batch(images: Vec<ExportImageTask>, watermark: WatermarkSettings, output_dir: String, mode: String) -> Result<String, String> {
     let font = FontRef::try_from_slice(FONT_DATA).map_err(|e| format!("Font error: {}", e))?;
     
     // Note: Settings are now resolved per-task
@@ -157,6 +157,8 @@ async fn export_batch(images: Vec<ExportImageTask>, watermark: WatermarkSettings
             let mut base_img = dynamic_img.to_rgba8();
             let (width, height) = base_img.dimensions();
 
+            // ONLY EXECUTE WATERMARK LOGIC IF MODE IS 'ADD'
+            if mode == "add" {
                 // Determine effective settings (Task > Global)
                 let eff_scale = task.scale.unwrap_or(watermark.scale);
                 let eff_opacity = task.opacity.unwrap_or(watermark.opacity);
@@ -218,6 +220,8 @@ async fn export_batch(images: Vec<ExportImageTask>, watermark: WatermarkSettings
                 x = x.max(0);
                 y = y.max(0);
                 
+                // SKIP DRAWING if text is empty (e.g. Remove Mode)
+                if !watermark.text.trim().is_empty() {
                     // 6. Draw Stroke (Simple 4-direction offset for black outline)
                     // Stroke alpha should match text alpha
                     let stroke_color = image::Rgba([0, 0, 0, text_color[3]]);
@@ -243,6 +247,8 @@ async fn export_batch(images: Vec<ExportImageTask>, watermark: WatermarkSettings
                         &font,
                         &watermark.text,
                     );
+                }
+            } // END IF MODE == ADD
 
             // Save
             let file_name = input_path.file_name().unwrap_or_default();

src/App.vue

@@ -32,7 +32,9 @@ async function openFolder() {
 
 async function exportBatch() {
     if (store.images.length === 0) return;
-    if (!store.watermarkSettings.text) {
+    
+    // Only require text if in ADD mode
+    if (store.editMode === 'add' && !store.watermarkSettings.text) {
         alert("请输入水印文字。");
         return;
     }
@@ -67,7 +69,8 @@ async function exportBatch() {
             await invoke('export_batch', {
                 images: exportTasks,
                 watermark: rustWatermarkSettings,
-                outputDir: outputDir
+                outputDir: outputDir,
+                mode: store.editMode
             });
             alert("批量导出完成！");
         }