app.py

import gradio as gr
import numpy as np
import random
import spaces
import torch
from diffusers import DiffusionPipeline

# Load the model
dtype = torch.bfloat16
device = "cuda" if torch.cuda.is_available() else "cpu"
pipe = DiffusionPipeline.from_pretrained("black-forest-labs/FLUX.1-schnell", torch_dtype=dtype).to(device)

# Constants
MAX_SEED = np.iinfo(np.int32).max
MAX_IMAGE_SIZE = 2048

# Style list for prompt customization
style_list = [
    {"name": "D&D Art", "prompt": "dungeons & dragons style artwork {prompt}. d&d style, key visual, vibrant, studio anime, highly detailed", "negative_prompt": "photo, deformed, black and white, realism, disfigured, low contrast"},
    {"name": "Dark Fantasy", "prompt": "dark and moody dungeons & dragons artwork of {prompt}. gothic ruins, shadowy figures, haunting atmospheres, grim villains, muted colors, intricate textures, sinister undertones", "negative_prompt": "bright, cheerful, cartoonish, lighthearted, futuristic, deformed"},
    {"name": "Epic Battle", "prompt": "dynamic dungeons & dragons artwork of {prompt}. epic battle scene, legendary heroes, fierce monsters, intense action, dramatic lighting, high-detail environment, magical effects, vibrant colors", "negative_prompt": "peaceful, mundane, low energy, modern, sci-fi, simplistic, cartoonish, low contrast"},
    # Add additional styles as needed
{    "name": "Character Portrait",
    "prompt": "dungeons & dragons character portrait of {prompt}. intricate details, expressive faces, heroic poses, rich textures, elaborate costumes, iconic weapons, fantasy aesthetic, studio-quality rendering",
    "negative_prompt": "generic, overly stylized, blurry, simplistic, futuristic, deformed"
},
{
    "name": "Magical Realm",
    "prompt": "mystical dungeons & dragons artwork of {prompt}. enchanted forests, glowing runes, floating islands, otherworldly landscapes, magical auras, vibrant fantasy colors, ultra-detailed",
    "negative_prompt": "urban, dull, realistic, futuristic, lifeless, overly muted, minimalistic"
},
{
    "name": "Legendary Creatures",
    "prompt": "dungeons & dragons artwork of legendary creatures {prompt}. awe-inspiring dragons, ferocious beasts, mythical monsters, intricate scales, detailed textures, dynamic poses, magical auras, cinematic quality",
    "negative_prompt": "simplistic, dull, mundane creatures, low-detail, modern animals, cartoony"
},

{
    "name": "Ancient Ruins",
    "prompt": "dungeons & dragons artwork of {prompt}. ancient temples, crumbling ruins, arcane symbols, epic scale, mystical atmosphere, grand designs, dramatic perspective, ultra-detailed",
    "negative_prompt": "modern structures, low-detail, dull, untextured, non-fantasy elements, minimalistic"
},

{
    "name": "Spellcasting Scene",
    "prompt": "dungeons & dragons artwork of {prompt}. dramatic spellcasting, glowing magic effects, dynamic poses, swirling energy, vibrant light contrasts, powerful sorcerers, rich fantasy aesthetic",
    "negative_prompt": "low energy, non-magical, mundane, modern day, generic designs, dull colors"
},

{
    "name": "Tavern Life",
    "prompt": "dungeons & dragons artwork of {prompt}. lively medieval tavern scene, detailed character interactions, warm firelight, wooden interiors, mugs of ale, bard performances, rich textures, inviting atmosphere",
    "negative_prompt": "cold, empty, futuristic, lifeless, overly simplistic, boring"
},

{
    "name": "D&D Quest Art",
    "prompt": "dungeons & dragons quest artwork of {prompt}. heroic adventurers, perilous journeys, hidden treasures, legendary quests, immersive fantasy landscapes, intricate details, atmospheric lighting, grand scale, narrative-driven composition",
    "negative_prompt": "modern, futuristic, low-detail, overly abstract, mundane settings, simplistic, sci-fi, cartoony, lifeless, uninspired"
},

{
    "name": "D&D Anime Art",
    "prompt": "dungeons & dragons anime-style artwork of {prompt}. stylized characters, vibrant colors, expressive designs, dynamic action poses, magical effects, intricate fantasy backgrounds, studio-quality anime detailing",
    "negative_prompt": "photo-realistic, overly gritty, mundane, futuristic, overly dark, simplistic, deformed"
},

{
    "name": "D&D Map",
    "prompt": "dungeons & dragons map artwork of {prompt}. In the styel of Dungeon Tiles, Intricate fantasy map with a precise 1-inch visible grid layout adhering to D&D rules (5 feet per square), ancient cartography style, clearly labeled locations, key landmarks, navigational markers, topographic textures, detailed compass rose, parchment-like texture, vibrant rich colors, immersive design, optimized for tabletop gameplay and tactical use.",
    "negative_prompt": "modern maps, bland, plain, low detail, inaccurate grids (non-5-foot alignment), futuristic, chaotic, unlabeled locations, minimalist, non-immersive, disproportionate landmarks."
},
{
    "name": "Arcane Duel",
    "prompt": "dungeons & dragons artwork of {prompt}. two powerful sorcerers battling with swirling magical energy, dramatic lighting, glowing spell effects, mystical atmosphere, ultra-detailed fantasy elements",
    "negative_prompt": "calm, peaceful, dull colors, modern setting, non-fantasy, low-detail"
},
{
    "name": "Treasure Hoard",
    "prompt": "dungeons & dragons artwork of {prompt}. a cavern filled with glittering gold coins, ancient relics, glowing gemstones, treasure chests, detailed textures, vibrant fantasy lighting",
    "negative_prompt": "empty, dull, modern day, futuristic, sci-fi, bland atmosphere"
},
{
    "name": "Underdark",
    "prompt": "dark and moody dungeons & dragons artwork of {prompt}. sprawling underground caverns, glowing fungi, shadowy creatures, bioluminescent details, ominous tones, intricate fantasy detailing",
    "negative_prompt": "bright and sunny, surface world, futuristic, sci-fi, minimal detail, lifeless"
},
{
    "name": "Celestial Realm",
    "prompt": "dungeons & dragons artwork of {prompt}. divine celestial realms, golden light, angelic beings, floating clouds, radiant auras, epic divine architecture, detailed textures",
    "negative_prompt": "dark, demonic, mundane, low-detail, futuristic, simplistic"
},
{
    "name": "D&D Heist Scene",
    "prompt": "dungeons & dragons artwork of {prompt}. a group of adventurers sneaking into a heavily guarded treasure vault, dramatic lighting, intricate lock mechanisms, tense atmosphere, ultra-detailed environment",
    "negative_prompt": "carefree, bland setting, modern day, low-detail, simplistic designs, deformed"
},
{
    "name": "Enchanted Forest",
    "prompt": "dungeons & dragons artwork of {prompt}. magical forest with glowing flora, towering ancient trees, mystical wildlife, detailed textures, serene but vibrant fantasy tones",
    "negative_prompt": "modern city, mundane, lifeless, futuristic, abstract designs, overly simplistic"
},
{
    "name": "Battle at the Gates",
    "prompt": "dungeons & dragons artwork of {prompt}. an epic battle unfolding at massive fortress gates, heavily armored soldiers, dramatic clashes, powerful war machines, intense action, atmospheric lighting",
    "negative_prompt": "peaceful, bland, empty fields, low energy, futuristic, deformed, overly simplistic"
},
{
    "name": "Stormy Seas",
    "prompt": "dungeons & dragons artwork of {prompt}. a ship caught in a raging storm, enormous waves, dark clouds, flashes of lightning, detailed ocean textures, dynamic lighting",
    "negative_prompt": "calm water, lifeless, plain scenery, futuristic, minimalist, abstract"
},
{
    "name": "Desert Wasteland",
    "prompt": "dungeons & dragons artwork of {prompt}. endless desert landscapes, ruins of ancient civilizations, glowing sun on the horizon, swirling sands, intricate details, mystical atmosphere",
    "negative_prompt": "lush forests, futuristic, cityscapes, low-detail, lifeless"
},
{
    "name": "Dwarven Forge",
    "prompt": "dungeons & dragons artwork of {prompt}. a massive underground forge with molten lava streams, glowing furnaces, dwarf blacksmiths, intricate metalworks, rugged and vibrant tones",
    "negative_prompt": "modern machinery, minimalistic, clean, futuristic, deformed"
},
{
    "name": "Ethereal Spires",
    "prompt": "dungeons & dragons artwork of {prompt}. floating crystalline towers above the clouds, glowing lights, otherworldly designs, vibrant celestial colors, ultra-detailed mystical atmosphere",
    "negative_prompt": "mundane, low-detail, dark and grim, simplistic, lifeless"
},
{
    "name": "Feywild Meadow",
    "prompt": "dungeons & dragons artwork of {prompt}. a surreal and magical meadow filled with sparkling lights, dancing fey creatures, vibrant blooming flowers, whimsical details, fantasy colors",
    "negative_prompt": "plain forest, dark and brooding, lifeless, realistic, dull tones"
},
{
    "name": "Dungeon Crawl",
    "prompt": "dungeons & dragons artwork of {prompt}. adventurers exploring a dark dungeon with traps, treasure chests, cobwebbed corners, torch-lit corridors, richly detailed stone textures",
    "negative_prompt": "bright outdoor scenes, futuristic, modern, low detail"
},
{
    "name": "Frosted Peaks",
    "prompt": "dungeons & dragons artwork of {prompt}. icy mountaintops, adventurers climbing through harsh snowstorms, frozen castles, glowing icy runes, cold tones with vivid details",
    "negative_prompt": "warm beaches, futuristic, cartoony, deformed, dull colors"
},
{
    "name": "Cyberpunk Cityscape",
    "prompt": "futuristic cyberpunk artwork of {prompt}. neon-lit streets, towering skyscrapers, flying vehicles, cybernetic details, vibrant colors, cinematic atmosphere, ultra-detailed",
    "negative_prompt": "fantasy, medieval, dull colors, empty city, overly simplistic, bland"
},
{
    "name": "Steampunk World",
    "prompt": "steampunk-style artwork of {prompt}. intricate clockwork mechanisms, steam-powered inventions, Victorian-inspired characters, vibrant but rustic tones, rich textures, detailed environments",
    "negative_prompt": "futuristic, sleek designs, dull, modern cityscapes, simplistic, minimalistic"
},
{
    "name": "Wild West Scene",
    "prompt": "cinematic wild west-style artwork of {prompt}. vast desert landscapes, rugged cowboys, wooden saloons, vintage rifles, atmospheric lighting, detailed textures",
    "negative_prompt": "modern vehicles, futuristic elements, overly vibrant, simplistic, low energy"
},
{
    "name": "Mythological Greece",
    "prompt": "mythological artwork of {prompt}. ancient Greek gods and heroes, marble temples, epic battles, radiant divine light, ultra-detailed settings, rich classical tones",
    "negative_prompt": "sci-fi, modern city, low-detail, lifeless atmosphere, generic textures"
},
{
    "name": "Sci-Fi Space Adventure",
    "prompt": "sci-fi style artwork of {prompt}. massive starships, alien planets, swirling galaxies, futuristic cities, neon highlights, ultra-detailed space themes",
    "negative_prompt": "fantasy elements, medieval setting, dull or muted tones, overly simple designs"
},
{
    "name": "Retro Pixel Art",
    "prompt": "8-bit retro-style pixel art of {prompt}. classic video game aesthetics, vibrant and bold pixel colors, stylized backgrounds, clean and defined sprites",
    "negative_prompt": "realistic textures, photorealistic, overly smooth, detailed textures"
},
{
    "name": "Pop Art Aesthetic",
    "prompt": "vivid pop art illustration of {prompt}. bold colors, high contrast, retro style, comic book-like details, playful and energetic compositions",
    "negative_prompt": "realism, dull tones, blurred effects, abstract"
},
{
    "name": "Noir Detective",
    "prompt": "cinematic noir-style artwork of {prompt}. black and white aesthetics, shadowy figures, fog-filled streets, dramatic lighting, vintage details, atmospheric tension",
    "negative_prompt": "colorful, futuristic, mundane, cheerful, low-detail"
},
{
    "name": "Studio Ghibli-Inspired Fantasy",
    "prompt": "anime-style artwork inspired by Studio Ghibli of {prompt}. magical landscapes, intricate details, vibrant colors, fantastical creatures, peaceful yet surreal atmosphere",
    "negative_prompt": "dark and brooding, sci-fi, plain, minimalist, harsh contrasts"
},
{
    "name": "Art Deco City",
    "prompt": "art deco-inspired cityscape of {prompt}. geometric designs, golden accents, intricate and modern architecture, glowing lights, detailed and luxurious atmosphere",
    "negative_prompt": "medieval settings, fantasy, low-detail, dull textures, minimalism"
},
    {"name": "(No style)", "prompt": "{prompt}", "negative_prompt": ""},
]

styles = {k["name"]: (k["prompt"], k["negative_prompt"]) for k in style_list}
STYLE_NAMES = list(styles.keys())
DEFAULT_STYLE_NAME = "D&D Art"

# Function to apply selected style
def apply_style(style_name: str, positive: str, negative: str = ""):
    p, n = styles.get(style_name, styles[DEFAULT_STYLE_NAME])
    return p.replace("{prompt}", positive), n + (negative or "")

# Inference function
@spaces.GPU()
def infer(
    prompt,
    style,
    seed=42,
    randomize_seed=False,
    width=1024,
    height=1024,
    num_inference_steps=4,
    progress=gr.Progress(track_tqdm=True),
):
    if randomize_seed:
        seed = random.randint(0, MAX_SEED)
    
    # Apply style to prompt
    styled_prompt, negative_prompt = apply_style(style, prompt)
    generator = torch.Generator().manual_seed(seed)
    image = pipe(
        prompt=styled_prompt,
        width=width,
        height=height,
        num_inference_steps=num_inference_steps,
        generator=generator,
        guidance_scale=0.0,
        negative_prompt=negative_prompt,
    ).images[0]
    return image, seed

# Example prompts
examples = [
    ["A heroic adventurer wielding a flaming sword standing on a cliff", "D&D Art"],
    ["A mystical library with ancient scrolls and glowing runes", "Dark Fantasy"],
    ["A ferocious dragon breathing fire in a dark cavern", "Epic Battle"],
]

# Custom CSS for a Dungeons & Dragons theme
css = """
body {
    background-color: #1b1b1b;
    font-family: 'Cinzel', serif;
    color: #f5f5f5;
    background-image: url('https://www.transparenttextures.com/patterns/dark-matter.png');
}
#col-container {
    margin: 0 auto;
    max-width: 550px;
    padding: 15px;
    border: 4px solid #8b4513;
    background: linear-gradient(145deg, #2e2b2a, #3a3433);
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}
"""

# Interface
with gr.Blocks(css=css) as demo:
    with gr.Column(elem_id="col-container"):
        # Title and Description
        gr.Markdown(
            """
            # 🛡️ ChatDnD.net 🛡️
            # ⚔️ Dungeons & Dragons Image Generator ⚔️
            **Unleash Your Imagination!** Create heroes, maps, quests, and epic scenes to bring your campaigns to life. 
            Tailored for adventurers seeking inspiration or Dungeon Masters constructing their next grand story. <br>
            [Visit Our Website](https://chatdnd.net) | [Support Us](https://buymeacoffee.com/watchoutformike)
            """
        )

        # Prompt input and style selector
        with gr.Row():
            prompt = gr.Textbox(
                label="🎲 Describe Your Vision:",
                lines=3,
                placeholder="Describe your hero, monster, or legendary landscape..."
            )
            style = gr.Dropdown(
                label="🎨 Select a Style",
                choices=STYLE_NAMES,
                value=DEFAULT_STYLE_NAME,
            )
        
        # Run button and result display
        with gr.Row():
            run_button = gr.Button("Generate Image")
        result = gr.Image(label="🖼️ Your Legendary Vision")
        
        # Advanced settings
        with gr.Accordion("⚙️ Advanced Settings", open=False):
            seed = gr.Slider(
                label="Seed",
                minimum=0,
                maximum=MAX_SEED,
                step=1,
                value=0,
            )
            randomize_seed = gr.Checkbox(label="Randomize Seed", value=True)
            
            with gr.Row():
                width = gr.Slider(
                    label="Width",
                    minimum=256,
                    maximum=MAX_IMAGE_SIZE,
                    step=32,
                    value=1024,
                )
                height = gr.Slider(
                    label="Height",
                    minimum=256,
                    maximum=MAX_IMAGE_SIZE,
                    step=32,
                    value=1024,
                )
            
            num_inference_steps = gr.Slider(
                label="Inference Steps",
                minimum=1,
                maximum=50,
                step=1,
                value=4,
            )

        # Examples with styles
        gr.Examples(
            examples=examples,
            inputs=[prompt, style],
            outputs=[result],
            fn=infer,
            cache_examples="lazy",
        )

    # Interactivity
    gr.on(
        triggers=[run_button.click, prompt.submit],
        fn=infer,
        inputs=[prompt, style, seed, randomize_seed, width, height, num_inference_steps],
        outputs=[result, seed],
    )

# Launch the demo
demo.launch()