Update app.py

app.py

@@ -1,6 +1,14 @@
 import gradio as gr
 from TTS.api import TTS
 
+css = """
+#warning {background-color: #FFCCCB !important}
+.feedback label textarea {height: auto !important;
+                    font-size: 25px !important;
+                    font-weight: 600 !important;
+                    text-align: center !important}
+#alert {background-color: #fff !important}
+"""
 
 # Init TTS
 tts = TTS(model_name="tts_models/multilingual/multi-dataset/your_tts", progress_bar=False, gpu=False)
@@ -8,20 +16,27 @@ zh_tts = TTS(model_name="tts_models/zh-CN/baker/tacotron2-DDC-GST", progress_bar
 de_tts = TTS(model_name="tts_models/de/thorsten/vits", gpu=False)
 es_tts = TTS(model_name="tts_models/es/mai/tacotron2-DDC", progress_bar=False, gpu=False)
 
-
 def text_to_speech(text: str, speaker_wav, speaker_wav_file):
     if len(text) > 0:
-        if speaker_wav_file and not speaker_wav:
-            speaker_wav = speaker_wav_file
-        file_path = "output.wav"
-        if speaker_wav is not None:
-            tts.tts_to_file(text, speaker_wav=speaker_wav, language="en", file_path=file_path)
-        else:
-            tts.tts_to_file(text, speaker=tts.speakers[0], language="en", file_path=file_path)
-        return file_path
+       return change_aud(text, speaker_wav, speaker_wav_file)
+    else:
+       return (None)
+
+def change_aud(text: str, speaker_wav, speaker_wav_file):
+    if speaker_wav_file and not speaker_wav:
+        speaker_wav = speaker_wav_file
+    file_path = "output.wav"
+    if speaker_wav is not None:
+        tts.tts_to_file(text, speaker_wav=speaker_wav, language="en", file_path=file_path)
     else:
-        raise gr.Error("Input box cannot be blank")
+        tts.tts_to_file(text, speaker=tts.speakers[0], language="en", file_path=file_path)
+    return file_path
 
+def show_error(text):
+    if len(text) == 0:
+        return gr.update(visible=True, elem_id="warning", elem_classes="feedback"), gr.update(visible=False)
+    else:
+        return gr.update(visible=False), gr.update(visible=True)
 
 title = "Voice-Cloning-Demo"
 
@@ -30,9 +45,13 @@ def toggle(choice):
         return gr.update(visible=True, value=None), gr.update(visible=False, value=None)
     else:
         return gr.update(visible=False, value=None), gr.update(visible=True, value=None)
+def change_color(text_input):
+    if len(text_input) == 0:
+        return gr.update(elem_id="warning")
+    else:
+        return gr.update(elem_id="alert")
 
-
-with gr.Blocks() as demo:
+with gr.Blocks(css=css) as demo:
     with gr.Row():
         with gr.Column():
             text_input = gr.Textbox(label="Input the text", value="", max_lines=3)
@@ -47,12 +66,15 @@ with gr.Blocks() as demo:
                 with gr.Column():
                     btn = gr.Button("Submit", variant="primary")
         with gr.Column():
-            audio_output = gr.Audio(label="Output")
+            audio_output = gr.Audio(label="Output", visible=True)
+            error_box = gr.Textbox(label="ERROR", value="Input box cannot be blank!!", visible=False)
 
     # gr.Examples(examples, fn=inference, inputs=[audio_file, text_input],
     #                   outputs=audio_output, cache_examples=True)
-    btn.click(text_to_speech, inputs=[text_input, audio_input_mic,audio_input_file], outputs=audio_output)
+    btn.click(text_to_speech, inputs=[text_input, audio_input_mic, audio_input_file], outputs=audio_output)
+    btn.click(show_error, text_input, [error_box, audio_output])
     radio.change(toggle, radio, [audio_input_mic, audio_input_file])
     btn_clear.add(audio_output)
+    btn.click(change_color, text_input, text_input)
 
 demo.launch(share=True)