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fix：优化PDF转换逻辑

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寒寒
2026-01-29 23:10:06 +08:00
parent 60a78ed1e3
commit 6a0c826a06
4 changed files with 346 additions and 28 deletions
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ui/views/convert_pdf_page.py Normal file
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import os
import comtypes.client
import pythoncom
from loguru import logger
from nicegui import ui
from utils.file_utils import open_folder
progress_bar = None
progress_label = None
powerpoint = None
def onload_page(folder: str = ""):
global powerpoint
pdf_path = os.path.join(folder, "PDF")
if not os.path.exists(pdf_path):
os.makedirs(pdf_path)
if not powerpoint:
try:
pythoncom.CoInitialize()
powerpoint = comtypes.client.CreateObject("PowerPoint.Application")
logger.success("PowerPoint 应用启动成功")
except Exception as e:
logger.error(f"PowerPoint 应用启动失败: {str(e)}")
def update_progress(current: int, total: int, message: str):
global progress_bar, progress_label
if total <= 0:
pct = 0
text = f"{message}: 准备中..."
else:
pct = current / total
text = f"{message}: {current}/{total} ({int(pct * 100)}%)"
# 更新 UI
if progress_bar:
progress_bar.set_value(pct)
if progress_label:
progress_label.set_text(text)
def cleanup_powerpoint():
"""清理 PowerPoint COM 组件资源"""
global powerpoint
if powerpoint:
try:
powerpoint.Quit()
logger.success("PowerPoint 应用已关闭")
except Exception as e:
logger.error(f"关闭 PowerPoint 应用失败: {str(e)}")
finally:
powerpoint = None
def create_convert_pdf_page(folder: str = ""):
onload_page(folder)
ui.add_head_html('<link href="/assets/style.css" rel="stylesheet" />')
# 添加样式
ui.add_head_html(
"""
<style>
.file-list { max-height: 450px; overflow-y: auto; }
.file-list::-webkit-scrollbar {
width: 6px;
}
.file-list::-webkit-scrollbar-track {
background: #f1f1f1;
border-radius: 3px;
}
.file-list::-webkit-scrollbar-thumb {
background: #c1c1c1;
border-radius: 3px;
}
.file-list::-webkit-scrollbar-thumb:hover {
background: #a1a1a1;
}
.file-item { transition: background-color 0.2s ease; }
.file-item:hover { background-color: #f8f9fa; }
</style>
"""
)
with ui.header().classes("app-header items-center justify-between shadow-md"):
# 左侧：图标和标题
with ui.row().classes("items-center gap-2"):
ui.image("/assets/icon.ico").classes("w-8 h-8").props("fit=contain")
ui.label("尚城幼儿园成长报告助手").classes("text-xl font-bold")
# 右侧：署名 + 配置按钮
with ui.row().classes("items-center gap-4"):
ui.label("By 寒寒 | 这里的每一份评语都充满爱意").classes(
"text-xs opacity-90"
)
ui.button(icon="home", on_click=lambda: ui.navigate.to("/")).props(
"flat round color=white"
)
with ui.card().classes("w-full"):
with ui.row().classes("w-full justify-between"):
ui.label("📑 格式转换").classes("section-title")
with ui.row().classes("flex-1 justify-end"):
ui.button(
"📑 格式转换",
on_click=lambda: convert_all_pdf_files(folder),
).props().classes()
ui.button(
"📂 打开文件夹",
on_click=lambda: open_folder(folder),
).props("outline").classes()
ui.button(
"🔄 刷新数据",
on_click=lambda: convert_files_list(list_card, folder),
).props("outline").classes()
# 进度条
with ui.row().classes("w-full"):
global progress_label, progress_bar
progress_bar = ui.linear_progress(value=0, show_value=False).classes(
"h-4 rounded"
)
progress_bar.props("color=positive")
progress_label = ui.label("⛳ 任务进度: 待命").classes(
"font-bold text-gray-700 mb-1"
)
list_card = ui.card().classes("w-full p-4 gap-4")
convert_files_list(list_card, folder)
# 遍历目录
def convert_files_list(list_card, folder):
# 清空旧内容
list_card.clear()
files = get_convert_files(folder)
with list_card:
ui.label(f"📄 找到 {len(files)} 个 PPT 文件").classes(
"text-sm text-gray-600 mb-4"
)
# 创建可滚动的文件列表
with ui.grid(columns=2).classes("file-list"):
for ppt_file in files:
with ui.row().classes(
"w-full justify-between items-center file-item p-3 rounded mb-2"
):
ui.label(ppt_file).classes("flex-1 text-sm")
with ui.row().classes("items-center gap-2"):
# 打开文件按钮
ui.button(
"📂 打开",
on_click=lambda f=ppt_file: open_folder(
os.path.join(folder, f)
),
).props("outline").classes("text-xs")
# 签名按钮
ui.button(
"📑 转换",
on_click=lambda f=ppt_file: (convert_pdf_file(folder, f),),
).props("outline").classes("text-xs")
def get_convert_files(folder: str) -> list:
"""获取目录下所有 需要转换的PPT 文件"""
if not os.path.exists(folder):
return []
files = []
for filename in os.listdir(folder):
if not filename.startswith(".") and filename.endswith(".pptx"):
files.append(filename)
return sorted(files)
def convert_file(folder, file_name: str):
"""
转换单个PPT文件为PDF格式
:param folder: PPT 文件所在目录
:param file_name: PPT 文件名称
"""
global progress_bar, progress_label, powerpoint
if not powerpoint:
logger.error("PowerPoint 应用未初始化，请重新加载页面")
ui.notify("PowerPoint 应用未初始化", type="negative")
return
try:
ppt_path = os.path.join(folder, file_name)
pdf_name = os.path.splitext(file_name)[0] + ".pdf"
pdf_path = os.path.join(folder, "PDF", pdf_name)
# 如果 PDF 已存在，可以选择跳过
if os.path.exists(pdf_path):
logger.info(f"[跳过] 已存在: {pdf_name}")
return True
# 打开 -> 另存为 -> 关闭
deck = powerpoint.Presentations.Open(ppt_path)
deck.SaveAs(pdf_path, 32)
deck.Close()
logger.success(f"文件转换完成: {file_name}")
return True
except Exception as e:
error_msg = f"转换失败: {str(e)}"
logger.error(error_msg)
return False
def convert_pdf_file(folder, file_name: str):
"""
转换单个PPT文件为PDF格式（带UI更新）
:param folder: PPT 文件所在目录
:param file_name: PPT 文件名称
"""
update_progress(0, 1, f"⛳ 任务进度: 开始转换 {file_name}")
result = convert_file(folder, file_name)
if result is True:
update_progress(1, 1, f"✅ 转换完成: {file_name}")
ui.notify(f"转换完成: {file_name}", type="positive")
elif result is None:
update_progress(1, 1, f"⏭️ 已存在: {file_name}")
ui.notify(f"已存在: {file_name}", type="info")
else:
update_progress(1, 1, f"❌ 转换失败: {file_name}")
ui.notify(f"转换失败: {file_name}", type="negative")
def convert_all_pdf_files(folder: str):
"""批量转换目录下所有PPT文件为PDF格式"""
global progress_bar, progress_label
pdf_files = get_convert_files(folder)
pdf_total = len(pdf_files)
if pdf_total == 0:
ui.notify("没有找到需要转换的PPT文件", type="warning")
return
success_count = 0
skip_count = 0
fail_count = 0
try:
for index, file in enumerate(pdf_files):
update_progress(index, pdf_total, f"正在转换: {file}")
result = convert_file(folder, file)
if result is True:
success_count += 1
elif result is None:
skip_count += 1
else:
fail_count += 1
update_progress(pdf_total, pdf_total, f"✅ 批量转换完成")
summary_msg = f"转换完成: 成功 {success_count} 个, 跳过 {skip_count} 个, 失败 {fail_count} 个"
logger.success(summary_msg)
ui.notify(summary_msg, type="positive")
except Exception as e:
error_msg = f"批量转换失败: {str(e)}"
update_progress(pdf_total, pdf_total, f"❌ 批量转换失败")
logger.error(error_msg)
ui.notify(error_msg, type="negative")