Merge pull request #47 from borisdayma/demo-improvements

Demo improvements

Former-commit-id: d80c40f0c12dab92a636eda9172fff67511206b4

app/app.py

@@ -3,33 +3,47 @@
 
 import random
 from dalle_mini.backend import ServiceError, get_images_from_backend
-from dalle_mini.helpers import captioned_strip
 
 import streamlit as st
 
-st.sidebar.title("DALL-E Mini")
+# st.sidebar.title("DALL·E mini")
 
-sc = st.sidebar.beta_columns(2)
-sc[0].image('../img/logo.png', width=150)
-sc[1].write("  ")
-sc[1].markdown("Generate images from a text prompt")
+# sc = st.sidebar.beta_columns(2)
+# st.sidebar.image('../img/logo.png', width=150)
+# sc[1].write("  ")
+# st.sidebar.markdown("Generate images from text")
+
+st.sidebar.markdown("""
+<style>
+.aligncenter {
+    text-align: center;
+}
+</style>
+<p class="aligncenter">
+    <img src="https://raw.githubusercontent.com/borisdayma/dalle-mini/main/img/logo.png"/>
+</p>
+""", unsafe_allow_html=True)
 st.sidebar.markdown("""
-##### Dall-E Mini
 ___
-Dall-E Mini is an AI model that generates images of your prompt!
+DALL·E mini is an AI model that generates images from any prompt you give!
 
-Created by Boris Dayma et al. 2021 | [GitHub](https://github.com/borisdayma/dalle-mini) | See [Report](https://wandb.ai/dalle-mini/dalle-mini/reports/DALL-E-mini--Vmlldzo4NjIxODA)
-        """)
+<p style='text-align: center'>
+Created by Boris Dayma et al. 2021
+<a href="https://github.com/borisdayma/dalle-mini">GitHub</a> | <a href="https://wandb.ai/dalle-mini/dalle-mini/reports/DALL-E-mini--Vmlldzo4NjIxODA">Report</a>
+</p>
+        """, unsafe_allow_html=True)
 
-st.header('DALL-E mini Demo')
-st.subheader('Generate images from a text prompt')
+st.header('DALL·E mini')
+st.subheader('Generate images from text')
 
 prompt = st.text_input("What do you want to see?")
 
 #TODO: I think there's an issue where we can't run twice the same inference (not due to caching) - may need to use st.form
 
-if prompt != "":
-    st.write(f"Generating candidates for: {prompt}")
+DEBUG = False
+if prompt != "" or st.session_state.get("again", False):
+    container = st.empty()
+    container.markdown(f"Generating predictions for: **{prompt}**")
 
     try:
         backend_url = st.secrets["BACKEND_SERVER"]
@@ -39,15 +53,22 @@ if prompt != "":
         cols = st.beta_columns(4)
         for i, img in enumerate(selected):
             cols[i%4].image(img)
+
+        container.markdown(f"**{prompt}**")
         
+        st.session_state["again"] = st.button('Again!', key='again_button')
+    
     except ServiceError as error:
-        st.write(f"Service unavailable, status: {error.status_code}")
+        container.text(f"Service unavailable, status: {error.status_code}")
     except KeyError:
-        st.write("""
-        **Error: BACKEND_SERVER unset**
-
-        Please, create a file called `.streamlit/secrets.toml` inside the app's folder and include a line to configure the server URL:
-        ```
-        BACKEND_SERVER="<server url>"
-        ```
-        """)
+        if DEBUG:
+            container.markdown("""
+            **Error: BACKEND_SERVER unset**
+
+            Please, create a file called `.streamlit/secrets.toml` inside the app's folder and include a line to configure the server URL:
+            ```
+            BACKEND_SERVER="<server url>"
+            ```
+            """)
+        else:
+            container.markdown('Error -5, please try again or [report it](mailto:pcuenca-dalle@guenever.net).')