app.py

import os
import gc
import gradio as gr
import numpy as np
import spaces
import torch
import random
from PIL import Image
from typing import Iterable
from gradio.themes import Soft
from gradio.themes.utils import colors, fonts, sizes

colors.orange_red = colors.Color(
    name="orange_red",
    c50="#FFF0E5",
    c100="#FFE0CC",
    c200="#FFC299",
    c300="#FFA366",
    c400="#FF8533",
    c500="#FF4500",
    c600="#E63E00",
    c700="#CC3700",
    c800="#B33000",
    c900="#992900",
    c950="#802200",
)

class OrangeRedTheme(Soft):
    def __init__(
        self,
        *,
        primary_hue: colors.Color | str = colors.gray,
        secondary_hue: colors.Color | str = colors.orange_red,
        neutral_hue: colors.Color | str = colors.slate,
        text_size: sizes.Size | str = sizes.text_lg,
        font: fonts.Font | str | Iterable[fonts.Font | str] = (
            fonts.GoogleFont("Outfit"), "Arial", "sans-serif",
        ),
        font_mono: fonts.Font | str | Iterable[fonts.Font | str] = (
            fonts.GoogleFont("IBM Plex Mono"), "ui-monospace", "monospace",
        ),
    ):
        super().__init__(
            primary_hue=primary_hue,
            secondary_hue=secondary_hue,
            neutral_hue=neutral_hue,
            text_size=text_size,
            font=font,
            font_mono=font_mono,
        )
        super().set(
            background_fill_primary="*primary_50",
            background_fill_primary_dark="*primary_900",
            body_background_fill="linear-gradient(135deg, *primary_200, *primary_100)",
            body_background_fill_dark="linear-gradient(135deg, *primary_900, *primary_800)",
            button_primary_text_color="white",
            button_primary_text_color_hover="white",
            button_primary_background_fill="linear-gradient(90deg, *secondary_500, *secondary_600)",
            button_primary_background_fill_hover="linear-gradient(90deg, *secondary_600, *secondary_700)",
            button_primary_background_fill_dark="linear-gradient(90deg, *secondary_600, *secondary_700)",
            button_primary_background_fill_hover_dark="linear-gradient(90deg, *secondary_500, *secondary_600)",
            button_secondary_text_color="black",
            button_secondary_text_color_hover="white",
            button_secondary_background_fill="linear-gradient(90deg, *primary_300, *primary_300)",
            button_secondary_background_fill_hover="linear-gradient(90deg, *primary_400, *primary_400)",
            button_secondary_background_fill_dark="linear-gradient(90deg, *primary_500, *primary_600)",
            button_secondary_background_fill_hover_dark="linear-gradient(90deg, *primary_500, *primary_500)",
            slider_color="*secondary_500",
            slider_color_dark="*secondary_600",
            block_title_text_weight="600",
            block_border_width="3px",
            block_shadow="*shadow_drop_lg",
            button_primary_shadow="*shadow_drop_lg",
            button_large_padding="11px",
            color_accent_soft="*primary_100",
            block_label_background_fill="*primary_200",
        )

orange_red_theme = OrangeRedTheme()

device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
dtype = torch.bfloat16

from diffusers import FlowMatchEulerDiscreteScheduler
from qwenimage.pipeline_qwenimage_edit_plus import QwenImageEditPlusPipeline
from qwenimage.transformer_qwenimage import QwenImageTransformer2DModel
from qwenimage.qwen_fa3_processor import QwenDoubleStreamAttnProcessorFA3

print("Loading Qwen Image Edit Pipeline...")
pipe = QwenImageEditPlusPipeline.from_pretrained(
    "Qwen/Qwen-Image-Edit-2509",
    transformer=QwenImageTransformer2DModel.from_pretrained(
        "linoyts/Qwen-Image-Edit-Rapid-AIO",
        subfolder='transformer',
        torch_dtype=dtype,
        device_map='cuda'
    ),
    torch_dtype=dtype
).to(device)

try:
    pipe.enable_vae_tiling()
    print("VAE Tiling enabled.")
except Exception as e:
    print(f"Warning: Could not enable VAE tiling: {e}")

print("Loading and Fusing Lightning LoRA (Base Optimization)...")
pipe.load_lora_weights("lightx2v/Qwen-Image-Lightning",
                       weight_name="Qwen-Image-Lightning-4steps-V2.0-bf16.safetensors",
                       adapter_name="lightning")
pipe.fuse_lora(adapter_names=["lightning"], lora_scale=1.0)

try:
    pipe.transformer.set_attn_processor(QwenDoubleStreamAttnProcessorFA3())
    print("Flash Attention 3 Processor set successfully.")
except Exception as e:
    print(f"Could not set FA3 processor: {e}. using default attention.")


ADAPTER_SPECS = {
    "Texture Edit": {
        "repo": "tarn59/apply_texture_qwen_image_edit_2509",
        "weights": "apply_texture_v2_qwen_image_edit_2509.safetensors",
        "adapter_name": "texture",
        "default_prompt": "Apply texture to object."
    },
    "Fuse-Objects": {
        "repo": "ostris/qwen_image_edit_inpainting",
        "weights": "qwen_image_edit_inpainting.safetensors",
        "adapter_name": "fusion",
        "default_prompt": "Fuse object into background."
    },
    "Cloth-Design-Fuse": {
        "repo": "ostris/qwen_image_edit_2509_shirt_design",
        "weights": "qwen_image_edit_2509_shirt_design.safetensors",
        "adapter_name": "shirt_design",
        "default_prompt": "Put this design on their shirt."
    },
    "Super-Fusion": {
        "repo": "dx8152/Qwen-Image-Edit-2509-Fusion",
        "weights": "溶图.safetensors",
        "adapter_name": "fusion-x",
        "default_prompt": "Blend the product into the background, correct its perspective and lighting."
    },
    "Material-Transfer": {
        "repo": "oumoumad/Qwen-Edit-2509-Material-transfer",
        "weights": "material-transfer_000004769.safetensors",
        "adapter_name": "material-transfer",
        "default_prompt": "Change materials of image1 to match the reference in image2."
    },
    "Light-Migration": {
        "repo": "dx8152/Qwen-Edit-2509-Light-Migration",
        "weights": "参考色调.safetensors",
        "adapter_name": "light-migration",
        "default_prompt": "Relight Image 1 based on the lighting and color tone of Image 2."
    }
}

LOADED_ADAPTERS = set()
MAX_SEED = np.iinfo(np.int32).max

def update_dimensions_on_upload(image):
    if image is None:
        return 1024, 1024
    
    original_width, original_height = image.size
    
    if original_width > original_height:
        new_width = 1024
        aspect_ratio = original_height / original_width
        new_height = int(new_width * aspect_ratio)
    else:
        new_height = 1024
        aspect_ratio = original_width / original_height
        new_width = int(new_height * aspect_ratio)
        
    # Ensure dimensions are multiples of 8
    new_width = (new_width // 8) * 8
    new_height = (new_height // 8) * 8
    
    return new_width, new_height

@spaces.GPU(duration=30)
def infer(
    image_1,
    image_2,
    prompt,
    lora_adapter,
    seed,
    randomize_seed,
    guidance_scale,
    steps,
    progress=gr.Progress(track_tqdm=True)
):
    gc.collect()
    torch.cuda.empty_cache()

    if image_1 is None or image_2 is None:
        raise gr.Error("Please upload both images for Fusion/Texture/FaceSwap tasks.")
    
    # 1. Get Adapter Spec
    spec = ADAPTER_SPECS.get(lora_adapter)
    if not spec:
        raise gr.Error(f"Invalid Adapter Selection: {lora_adapter}")
    
    adapter_name = spec["adapter_name"]

    # 2. Dynamic Loading Logic
    if adapter_name not in LOADED_ADAPTERS:
        print(f"--- Downloading and Loading Adapter: {lora_adapter} ---")
        try:
            pipe.load_lora_weights(
                spec["repo"], 
                weight_name=spec["weights"], 
                adapter_name=adapter_name
            )
            LOADED_ADAPTERS.add(adapter_name)
        except Exception as e:
            raise gr.Error(f"Failed to load adapter {lora_adapter}: {e}")
    else:
        print(f"--- Adapter {lora_adapter} already loaded. Activating. ---")

    # 3. Handle Default Prompts
    if not prompt:
        prompt = spec["default_prompt"]
            
    # 4. Activate specific adapter
    # Note: We do not fuse these task adapters, we just activate them.
    # Lightning is already fused.
    pipe.set_adapters([adapter_name], adapter_weights=[1.0])

    if randomize_seed:
        seed = random.randint(0, MAX_SEED)

    generator = torch.Generator(device=device).manual_seed(seed)
    negative_prompt = "worst quality, low quality, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, jpeg artifacts, signature, watermark, username, blurry"

    img1_pil = image_1.convert("RGB")
    img2_pil = image_2.convert("RGB")
    
    width, height = update_dimensions_on_upload(img1_pil)

    try:
        with torch.inference_mode():
            result = pipe(
                image=[img1_pil, img2_pil],
                prompt=prompt,
                negative_prompt=negative_prompt,
                height=height,
                width=width,
                num_inference_steps=steps,
                generator=generator,
                true_cfg_scale=guidance_scale,
            ).images[0]
            
        return result, seed
        
    except Exception as e:
        raise e
        
    finally:
        gc.collect()
        torch.cuda.empty_cache()

@spaces.GPU
def infer_example(image_1, image_2, prompt, lora_adapter):
    if image_1 is None or image_2 is None:
        return None, 0
    
    # Simple wrapper call
    result, seed = infer(
        image_1.convert("RGB"), 
        image_2.convert("RGB"), 
        prompt, 
        lora_adapter, 
        0,
        True,
        1.0,
        4
    )
    return result, seed

css="""
#col-container {
    margin: 0 auto;
    max-width: 1100px;
}
#main-title h1 {font-size: 2.1em !important;}
"""

with gr.Blocks(delete_cache=(300, 300)) as demo:
    with gr.Column(elem_id="col-container"):
        gr.Markdown("# **Qwen-Image-Edit-2509-LoRAs-Fast-Fusion**", elem_id="main-title")
        gr.Markdown("Perform diverse image edits using specialized [LoRA](https://huggingface.co/models?other=base_model:adapter:Qwen/Qwen-Image-Edit-2509) adapters for the [Qwen-Image-Edit](https://huggingface.co/Qwen/Qwen-Image-Edit-2509) model.")
        with gr.Row(equal_height=True):
          
            with gr.Column(scale=1):
                with gr.Row():
                    image_1 = gr.Image(label="Base Image", type="pil", height=290)
                    image_2 = gr.Image(label="Reference Image", type="pil", height=290)

                prompt = gr.Text(
                    label="Edit Prompt",
                    show_label=True,
                    placeholder="e.g., Apply wood texture to the mug...",
                )
                
                run_button = gr.Button("Edit Image", variant="primary")

                with gr.Accordion("Advanced Settings", open=False, visible=False):
                    seed = gr.Slider(label="Seed", minimum=0, maximum=MAX_SEED, step=1, value=0)
                    randomize_seed = gr.Checkbox(label="Randomize Seed", value=True)
                    guidance_scale = gr.Slider(label="True Guidance Scale", minimum=1.0, maximum=10.0, step=0.1, value=1.0)
                    steps = gr.Slider(label="Inference Steps", minimum=1, maximum=50, step=1, value=4)

            with gr.Column(scale=1):
                output_image = gr.Image(label="Output Image", interactive=False, format="png", height=350)
                
                with gr.Row():
                    lora_adapter = gr.Dropdown(
                        label="Choose Editing Style",
                        choices=list(ADAPTER_SPECS.keys()),
                        value="Texture Edit",
                    )        
 
        gr.Examples(
            examples=[
                ["examples/M1.jpg", "examples/M2.jpg", "Refer to the color tone, remove the original lighting from Image 1, and relight Image 1 based on the lighting and color tone of Image 2.", "Light-Migration"],
                ["examples/Cloth2.jpg", "examples/Design2.png", "Put this design on their shirt.", "Cloth-Design-Fuse"],
                ["examples/Cup1.png", "examples/Wood1.png", "Apply wood texture to mug.", "Texture Edit"],
                ["examples/Cloth1.jpg", "examples/Design1.png", "Put this design on their shirt.", "Cloth-Design-Fuse"],
                ["examples/F3.jpg", "examples/F4.jpg", "Replace her glasses with the new glasses from image 1.", "Super-Fusion"],
                ["examples/Chair.jpg", "examples/Material.jpg", "Change materials of image1 to match the reference in image2.", "Material-Transfer"],
                ["examples/F1.jpg", "examples/F2.jpg", "Put the small bottle on the table.", "Super-Fusion"],
                ["examples/Mug1.jpg", "examples/Texture1.jpg", "Apply the design from image 2 to the mug.", "Texture Edit"],
                ["examples/Cat1.jpg", "examples/Glass1.webp", "A cat wearing glasses in image 2.", "Fuse-Objects"],

            ],
            inputs=[image_1, image_2, prompt, lora_adapter],
            outputs=[output_image, seed],
            fn=infer_example,
            cache_examples=False,
            label="Examples"
        )

    run_button.click(
        fn=infer,
        inputs=[image_1, image_2, prompt, lora_adapter, seed, randomize_seed, guidance_scale, steps],
        outputs=[output_image, seed]
    )
    
if __name__ == "__main__":
    demo.queue(max_size=50).launch(css=css, theme=orange_red_theme, mcp_server=True, ssr_mode=False, show_error=True)