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Update app.py
Browse files
app.py
CHANGED
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import gradio as gr
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from selenium import webdriver
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from selenium.webdriver.chrome.options import Options
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from selenium.webdriver.common.by import By
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver.support import expected_conditions as EC
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from PIL import Image
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from io import BytesIO
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import tempfile
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import time
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import os
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import math
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def render_fullpage_by_scrolling(html_code):
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# HTMLコードを一時ファイルに保存
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tmp_file = tempfile.NamedTemporaryFile(suffix=".html", delete=False)
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tmp_path = tmp_file.name
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tmp_file.write(html_code.encode('utf-8'))
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tmp_file.close()
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options = Options()
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options.add_argument("--headless")
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options.add_argument("--no-sandbox")
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options.add_argument("--disable-dev-shm-usage")
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options.add_argument("--force-device-scale-factor=1")
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-
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try:
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driver = webdriver.Chrome(options=options)
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driver
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# ページロード完了を待機
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WebDriverWait(driver, 10).until(
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EC.presence_of_element_located((By.TAG_NAME, "body"))
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)
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#
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time.sleep(2)
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# 必要に応じてスクロールバーを非表示にする(オプション)
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driver.execute_script("""
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document.documentElement.style.overflow = 'hidden';
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document.body.style.overflow = 'hidden';
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""")
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# ページ全体の高さ(スクロール量)と、ビューポートの高さを取得
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scroll_height = driver.execute_script("return document.body.scrollHeight")
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viewport_height = driver.execute_script("return window.innerHeight")
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# スクロール回数を計算
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n_screens = math.ceil(scroll_height / viewport_height)
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#
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png = driver.get_screenshot_as_png()
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img = Image.open(BytesIO(png))
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screenshots.append(img)
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#
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driver.execute_script(f"window.scrollTo(0, {next_scroll})")
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time.sleep(1) # スクロール後の描画待ち
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#
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# 幅は最初の画像の幅を基準にする
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# -----------------------------------------
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total_width = screenshots[0].width
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total_height = scroll_height
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full_screenshot = Image.new('RGB', (total_width, total_height))
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paste_y = i * viewport_height
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# 残りの高さ (最後だけviewport_heightより小さい可能性)
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leftover_height = total_height - paste_y
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if leftover_height < img.height:
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# 画像の上から leftover_height 分だけ切り抜く
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img = img.crop((0, 0, img.width, leftover_height))
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finally:
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driver.quit()
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if os.path.exists(tmp_path):
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os.remove(tmp_path)
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# Gradio
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iface = gr.Interface(
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fn=
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inputs=
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"
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)
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if __name__ == "__main__":
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import os
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import math
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import time
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import tempfile
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import gc
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from io import BytesIO
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import gradio as gr
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from PIL import Image
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from selenium import webdriver
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from selenium.webdriver.chrome.options import Options
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from selenium.webdriver.common.by import By
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver.support import expected_conditions as EC
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def setup_driver():
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"""
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ヘッドレスChromiumブラウザを起動するためのWebDriverを初期化する。
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Hugging Face Spacesで動かす場合は、packages.txtにchromium-driverが必要。
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"""
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options = Options()
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options.add_argument("--headless")
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options.add_argument("--no-sandbox")
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options.add_argument("--disable-dev-shm-usage")
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options.add_argument("--force-device-scale-factor=1")
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try:
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driver = webdriver.Chrome(options=options)
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# スタート時の画面サイズを固定しておく
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driver.set_window_size(1280, 800)
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return driver
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except Exception as e:
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print(f"WebDriver初期化エラー: {e}")
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return None
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def calculate_scroll_parameters(driver):
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"""
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スクロールに必要なパラメータを精密に計算する。
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"""
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# ビューポートの高さ(表示領域)
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viewport_height = driver.execute_script("return window.innerHeight")
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# ページ全体の高さ
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total_height = driver.execute_script("""
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return Math.max(
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document.body.scrollHeight,
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document.documentElement.scrollHeight
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);
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""")
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# スクロール回数を算出(端数が出たら繰り上げ)
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scroll_steps = math.ceil(total_height / viewport_height)
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# 画像の重複を少し入れておく(50px程度)と、つなぎ目がズレにくい
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overlap_pixels = 50
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return viewport_height, total_height, scroll_steps, overlap_pixels
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def process_screenshot_tiles(tiles, viewport_height, total_height, overlap):
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"""
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複数のタイル画像(tiles)を縦に合成して1枚のフルページ画像を作る。
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overlap: タイル同士を結合する際に重複させる領域(px)
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"""
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if not tiles:
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return None
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# 合成画像の最終サイズ
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# 幅 = 最初のタイルの幅, 高さ = ページ全体の高さ
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stitched_width = tiles[0].width
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stitched_height = total_height
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# 新しい画像を作る
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stitched = Image.new('RGB', (stitched_width, stitched_height))
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y_offset = 0
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for i, tile in enumerate(tiles):
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# タイルを貼り付ける
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stitched.paste(tile, (0, y_offset))
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# 最終タイル以外はオーバーラップ分を差し引いて次の貼り付け位置を計算
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if i < len(tiles) - 1:
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y_offset += tile.height - overlap
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else:
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# 最終タイルではオーバーラップを引かないで終了
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y_offset += tile.height
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return stitched
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def capture_fullpage_screenshot(driver, html_content, css_content):
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"""
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与えられたHTMLコードとCSSコードを結合したページを生成し、
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ヘッドレスブラウザでフルページスクリーンショットを取得(スクロール結合)。
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"""
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temp_path = None
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try:
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# もし不要ならCSS非表示でもOK
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# driver.execute_script("document.querySelector('style').style.display='none';")
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# 一時的なHTMLファイルを作る
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with tempfile.NamedTemporaryFile(suffix=".html", delete=False) as f:
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f.write(f"""
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<html>
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<head>
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<meta charset="UTF-8">
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<style>
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{css_content}
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</style>
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</head>
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<body>
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{html_content}
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</body>
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</html>
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""".encode('utf-8'))
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temp_path = f.name
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# ローカルHTMLを読み込み
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driver.get(f"file://{temp_path}")
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# ページロード完了を待機
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WebDriverWait(driver, 10).until(
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EC.presence_of_element_located((By.TAG_NAME, "body"))
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time.sleep(1.0) # 追加で待機(フォントや画像の読み込み)
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# スクロールパラメータ計算
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viewport_height, total_height, scroll_steps, overlap_pixels = calculate_scroll_parameters(driver)
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tiles = []
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for step in range(scroll_steps):
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scroll_y = step * (viewport_height - overlap_pixels)
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driver.execute_script(f"window.scrollTo(0, {scroll_y});")
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# DOMが再描画されるまで待機
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time.sleep(0.4)
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# スクリーンショット撮影
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screenshot = driver.get_screenshot_as_png()
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tile_img = Image.open(BytesIO(screenshot))
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tiles.append(tile_img)
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# タイルを結合
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full_image = process_screenshot_tiles(tiles, viewport_height, total_height, overlap_pixels)
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# メモリ解放(念のため)
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del tiles
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gc.collect()
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return full_image, None
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except Exception as e:
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return None, f"エラー発生: {str(e)}"
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finally:
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if temp_path and os.path.exists(temp_path):
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os.unlink(temp_path)
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def gradio_interface(html_input, css_input):
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"""
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Gradioから呼び出すメイン関数。
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"""
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driver = setup_driver()
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if not driver:
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return None, "WebDriver初期化に失敗しました。"
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image, error = capture_fullpage_screenshot(driver, html_input, css_input)
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driver.quit()
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if error:
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return None, error
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else:
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return image, None
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# Gradioアプリの定義
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iface = gr.Interface(
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fn=gradio_interface,
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inputs=[
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gr.Textbox(label="HTMLコード", lines=15, placeholder="<h1>Hello</h1>..."),
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gr.Textbox(label="CSSコード", lines=8, placeholder="body { background-color: #fff; }")
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],
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outputs=[
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gr.Image(label="フルページスクリーンショット"),
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gr.Textbox(label="エラーメッセージ", interactive=False)
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],
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title="フルページスクリーンショット(スクロール結合) App",
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description="HTMLとCSSを入力すると、ページ全体をスクロールしながらキャプチャして1枚の画像に結合します。"
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)
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if __name__ == "__main__":
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