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import gradio as gr
import numpy as np
with gr.Blocks() as demo:
imgs = gr.State()
gallery = gr.Gallery(allow_preview=False)
def deselect_images():
return gr.Gallery(selected_index=None)
def generate_images():
images = []
for _ in range(9):
image = np.ones((100, 100, 3), dtype=np.uint8) * np.random.randint(
0, 255, 3
) # image is a solid single color
images.append(image)
return images, images
demo.load(generate_images, None, [gallery, imgs])
with gr.Row():
selected = gr.Number(show_label=False)
darken_btn = gr.Button("Darken selected")
deselect_button = gr.Button("Deselect")
deselect_button.click(deselect_images, None, gallery)
def get_select_index(evt: gr.SelectData):
return evt.index
gallery.select(get_select_index, None, selected)
def darken_img(imgs, index):
index = int(index)
imgs[index] = np.round(imgs[index] * 0.8).astype(np.uint8)
return imgs, imgs
darken_btn.click(darken_img, [imgs, selected], [imgs, gallery])
if __name__ == "__main__":
demo.launch()
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