refactor: rename canto-backend → backend, canto-frontend → frontend

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/indextts/utils/webui_utils.py

@@ -0,0 +1,42 @@
+import gradio as gr
+
+
+def html_center(text, label='p'):
+    return f"""<div style="text-align: center; margin: 100; padding: 50;">
+                <{label} style="margin: 0; padding: 0;">{text}</{label}>
+                </div>"""
+
+
+def html_left(text, label='p'):
+    return f"""<div style="text-align: left; margin: 0; padding: 0;">
+                <{label} style="margin: 0; padding: 0;">{text}</{label}>
+                </div>"""
+
+
+def next_page(page_number,sentences):
+    new_page_number = int(page_number) + 1
+    update_page_number = gr.update(value=str(new_page_number))
+    update_prev_page = gr.update(visible=True, interactive=True)
+    if len(sentences.values) <= new_page_number * 20:
+        update_next_page = gr.update(visible=False, interactive=False)
+    else:
+        update_next_page = gr.update(visible=True, interactive=True)
+    return update_page_number, update_next_page, update_prev_page
+
+
+def prev_page(page_number):
+    new_page_number = int(page_number) - 1
+    update_page_number = gr.update(value=str(new_page_number))
+    if new_page_number == 1:
+        update_prev_page = gr.update(visible=False, interactive=False)
+    else:
+        update_prev_page = gr.update(visible=True, interactive=True)
+    update_next_page = gr.update(visible=True, interactive=True)
+    return update_page_number, update_next_page, update_prev_page
+
+
+def update_current_texts(page_number,sentences):
+    start_index = (int(page_number) - 1) * 20
+    end_index = int(page_number) * 20
+    current_texts = sentences.values[start_index:end_index if end_index < len(sentences.values) else len(sentences.values)]
+    return gr.update(values=current_texts)