feat(product-suite): remove fixed original image placeholders

app/gui/tabs/product_suite.py

@@ -153,6 +153,7 @@ class ProductOriginalDelegate(QStyledItemDelegate):
 
 class ProductOriginalList(QListWidget):
     MAX_VISIBLE_ASSETS = 16
+    EMPTY_STATE_TEXT = "暂无商品原图"
 
     filesDropped = Signal(list)
     clipboardImage = Signal(bytes)
@@ -191,7 +192,20 @@ class ProductOriginalList(QListWidget):
         self._hover_remove_button.setFixedSize(28, 28)
         self._hover_remove_button.clicked.connect(self._remove_hovered)
         self._hover_remove_button.hide()
-        self.setToolTip("点击添加图片；也可拖入图片、粘贴图片或拖动缩略图排序")
+        self.setToolTip("可拖入或粘贴图片；已有缩略图可拖动排序")
+
+    def paintEvent(self, event):
+        super().paintEvent(event)
+        if self.count() != 0:
+            return
+        painter = QPainter(self.viewport())
+        painter.setPen(QColor("#6b7280"))
+        painter.drawText(
+            self.viewport().rect().adjusted(12, 8, -12, -8),
+            Qt.AlignCenter,
+            self.EMPTY_STATE_TEXT,
+        )
+        painter.end()
 
     def dragEnterEvent(self, event):
         if event.mimeData().hasUrls():
@@ -319,9 +333,11 @@ class ProductOriginalList(QListWidget):
         return max(1, (available + self.spacing()) // step)
 
     def content_row_count(self):
-        count = min(self.MAX_VISIBLE_ASSETS, max(1, self.count()))
+        count = min(self.MAX_VISIBLE_ASSETS, self.count())
+        if count == 0:
+            return 1
         columns = self.content_column_count()
-        return max(1, (count + columns - 1) // columns)
+        return (count + columns - 1) // columns
 
     def update_content_height(self):
         rows = self.content_row_count()
@@ -741,6 +757,19 @@ class ProductSuiteTab(QWidget):
         layout.addWidget(self.open_folder_button)
         self.add_images_button = QPushButton("添加图片")
         self.add_images_button.setObjectName("suiteAddImagesButton")
+        self.add_images_button.setAccessibleName("添加商品原图")
+        self.add_images_button.setToolTip("添加本地商品原图")
+        self.add_images_button.setStyleSheet(
+            "QPushButton#suiteAddImagesButton { "
+            "color: #0969da; border: 1px solid #0969da; "
+            "background-color: #eef4ff; font-weight: 600; "
+            "}"
+            "QPushButton#suiteAddImagesButton:hover { background-color: #dbeafe; }"
+            "QPushButton#suiteAddImagesButton:pressed { background-color: #c7ddff; }"
+            "QPushButton#suiteAddImagesButton:disabled { "
+            "color: #8c959f; border-color: #d8dee4; background-color: #f6f8fa; "
+            "}"
+        )
         layout.addWidget(self.add_images_button)
         layout.addStretch(1)
         layout.addWidget(QLabel("账号"))
@@ -1396,6 +1425,25 @@ class ProductSuiteTab(QWidget):
         self.pull_button.setEnabled(
             self._valid_context(state, show_message=False) and state.pull_worker is None
         )
+        self._refresh_add_images_action(state)
+
+    def _refresh_add_images_action(self, state):
+        asset_count = len(self._original_assets(state, include_missing=True)) if state else 0
+        full = asset_count >= image_studio_images.MAX_ORIGINAL_ASSETS
+        generation_running = bool(state and state.generation_running())
+        importing = bool(state and state.import_worker is not None)
+        self.add_images_button.setEnabled(
+            state is not None and not full and not generation_running and not importing
+        )
+        if full:
+            tooltip = "已达到16张商品原图上限"
+        elif generation_running:
+            tooltip = "生成中不能添加商品原图"
+        elif importing:
+            tooltip = "正在添加商品原图"
+        else:
+            tooltip = "添加本地商品原图"
+        self.add_images_button.setToolTip(tooltip)
 
     def _start_thread(self, worker, name):
         thread = run_worker(worker, thread_name=name, start=False)
@@ -1431,14 +1479,6 @@ class ProductSuiteTab(QWidget):
                     item.setIcon(QIcon(_placeholder_pixmap("待下载", QSize(82, 64))))
                     item.setToolTip("%s尚未下载；勾选可批量删除，单击缩略图后台拉取" % label)
                 self.original_list.addItem(item)
-            for index in range(len(assets) + 1, 7):
-                label = "主图" if index == 1 else "参考%d" % (index - 1)
-                item = QListWidgetItem(label)
-                item.setData(Qt.UserRole, None)
-                item.setIcon(QIcon(_placeholder_pixmap("添加", QSize(82, 64))))
-                item.setToolTip("点击添加%s" % label)
-                item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable)
-                self.original_list.addItem(item)
         finally:
             self.original_list.blockSignals(previous)
         self._original_list_context = context
@@ -1446,6 +1486,7 @@ class ProductSuiteTab(QWidget):
         self.original_list.viewport().update()
         self.original_count_label.setText("%d/16" % len(assets))
         self._refresh_original_selection_controls()
+        self._refresh_add_images_action(state)
         self._refresh_totals(state)
 
     def _on_original_checks_changed(self, asset_ids):
@@ -1512,6 +1553,8 @@ class ProductSuiteTab(QWidget):
             config=self.config,
         )
         state.import_worker = worker
+        if state is self._displayed_state:
+            self._refresh_add_images_action(state)
         worker.finished.connect(lambda result, state=state: self._on_import_finished(state, result))
         worker.cancelled.connect(lambda result, state=state: self._on_import_finished(state, result))
         worker.failed.connect(lambda row, error, state=state: self._on_import_failed(state, error))
@@ -1519,7 +1562,11 @@ class ProductSuiteTab(QWidget):
         self._status("正在后台添加商品原图", "info")
 
     def _on_import_failed(self, state, error):
+        state.import_worker = None
+        state.import_thread = None
         self._status("添加商品原图失败：%s" % _user_error(error), "danger")
+        if state is self._displayed_state:
+            self._refresh_add_images_action(state)
 
     def _on_import_finished(self, state, result):
         state.import_worker = None
@@ -1622,9 +1669,6 @@ class ProductSuiteTab(QWidget):
 
     def _on_original_clicked(self, item):
         asset = self._asset_for_item(item)
-        if asset is None and item.data(Qt.UserRole) is None:
-            self.choose_images()
-            return
         if asset is not None and not _asset_usable(asset) and asset.remote_url:
             self._queue_original_downloads(self._displayed_state, [asset])
 
@@ -2107,7 +2151,7 @@ class ProductSuiteTab(QWidget):
         self.pull_button.setText("正在拉取..." if state.pull_worker is not None else "拉取蝦皮主图")
         self.account_combo.setEnabled(not generation_running and state.pull_worker is None)
         self.item_id_edit.setEnabled(not generation_running and state.pull_worker is None)
-        self.add_images_button.setEnabled(not generation_running and state.import_worker is None)
+        self._refresh_add_images_action(state)
         self.original_list.setEnabled(not generation_running)
         self._refresh_original_selection_controls()
         for widget in (