# main.vp — ViperQtProject：VS Installer 风格安装向导演示
#
# 纯界面演示（无真实安装逻辑）：
#   步骤0 欢迎 → 步骤1 许可协议 → 步骤2 组件选择 → 步骤3 安装进度 → 步骤4 完成
#
# 完善功能：
#   - 许可协议页：协议文本 + "我接受" 勾选后才可继续
#   - 组件选择：磁盘占用实时统计 + 安装选项（快捷方式/PATH/桌面图标）
#   - 安装进度：进度条 + 阶段文案 + 实时日志（QPlainTextEdit）
#   - 安装按钮点击后禁用，防重复
#
# 说明：
#   - 回调签名统一 def Cb(slot_id: int, data: t.CPtr)
#   - 跨模块 FFI 调用避免返回指针的函数（用 *_utf8 便捷版 + 整数返回函数）
#   - 模块级全局只存 t.CPtr 指针（不存对象）
import t
import stdlib
import viperlib
import vqt6


# ============================================================
# 全局指针（回调里访问）
# ============================================================
app_ptr: t.CPtr = None
stack_ptr: t.CPtr = None
nav0_ptr: t.CPtr = None
nav1_ptr: t.CPtr = None
nav2_ptr: t.CPtr = None
nav3_ptr: t.CPtr = None
nav4_ptr: t.CPtr = None
progress_ptr: t.CPtr = None
progress_status_ptr: t.CPtr = None
log_ptr: t.CPtr = None
path_label_ptr: t.CPtr = None
summary_ptr: t.CPtr = None
disk_ptr: t.CPtr = None
finish_summary_ptr: t.CPtr = None
timer_ptr: t.CPtr = None
comp0_ptr: t.CPtr = None
comp1_ptr: t.CPtr = None
comp2_ptr: t.CPtr = None
comp3_ptr: t.CPtr = None
comp4_ptr: t.CPtr = None
agree_cb_ptr: t.CPtr = None
license_next_ptr: t.CPtr = None
install_btn_ptr: t.CPtr = None
opt0_ptr: t.CPtr = None
opt1_ptr: t.CPtr = None
opt2_ptr: t.CPtr = None

# 全局状态
cur_step: int = 0
progress_val: int = 0
comp_count: int = 0
install_path: str = "C:/Program Files/Viper6"


# ============================================================
# 深色主题 QSS（VS Installer 风格，单行字面量）
# ============================================================
dark_qss: str = "QWidget { background-color: #1e1e1e; color: #d4d4d4; font-size: 13px; } QPushButton { background-color: #333333; border: 1px solid #555555; border-radius: 4px; padding: 7px 16px; color: #ffffff; } QPushButton:hover { background-color: #454545; } QPushButton:pressed { background-color: #2a6da8; } QPushButton:disabled { background-color: #2a2a2a; color: #666666; border-color: #3a3a3a; } QLineEdit { background-color: #252526; border: 1px solid #555555; border-radius: 3px; padding: 5px 8px; color: #ffffff; } QCheckBox { color: #d4d4d4; spacing: 10px; font-size: 14px; } QCheckBox::indicator { width: 18px; height: 18px; } QProgressBar { background-color: #252526; border: 1px solid #555555; border-radius: 5px; text-align: center; color: #ffffff; font-size: 13px; } QProgressBar::chunk { background-color: #4a86c8; border-radius: 4px; } QPlainTextEdit { background-color: #1a1a1a; border: 1px solid #444444; color: #cccccc; }"


# 导航项样式
nav_active_qss: str = "font-size: 15px; color: #ffffff; font-weight: bold; background-color: #2a6da8; padding: 10px 14px; border-radius: 4px;"
nav_idle_qss: str = "font-size: 15px; color: #8a8a8a; padding: 10px 14px;"


# 许可协议文本
license_text: str = "VIPER 6.0 最终用户许可协议\n\n重要 - 请仔细阅读：本最终用户许可协议（以下简称\"协议\"）是您与 Viper Software Foundation 之间就 Viper 6.0 软件达成的法律协议。\n\n1. 许可授予。在遵守本协议条款的前提下，您被授予一份非独占、不可转让的许可，允许在您的设备上安装和使用本软件用于开发与测试目的。\n\n2. 使用限制。您不得对本软件进行反向工程、反编译或反汇编（适用法律明确允许的除外）；不得删除或修改软件中的版权声明。\n\n3. 开源组件。本软件包含根据 MIT、BSD 与 LGPL 许可发布的第三方开源组件，相关许可文本随附于软件文档中。\n\n4. 免责声明。本软件按\"现状\"提供，不附带任何明示或默示的担保，包括但不限于适销性、特定用途适用性及不侵权的担保。\n\n5. 责任限制。在任何情况下，Viper Software Foundation 均不对因使用或无法使用本软件而产生的任何间接、偶然、特殊或后果性损害承担责任。\n\n6. 协议终止。若您违反本协议的任何条款，本协议将自动终止，您应停止使用并删除本软件的全部副本。\n\n请阅读以上条款。要安装 Viper 6.0，必须接受这些条款并勾选下方的\"我接受许可协议中的条款\"。"


# ============================================================
# 工具：切换步骤 + 导航高亮
# ============================================================
def SetNavStyle(ptr: t.CPtr, qss: str):
    vqt6.vqt6_qwidget_set_stylesheet_utf8(ptr, qss)


def GotoStep(step: int):
    global cur_step
    cur_step = step
    vqt6.vqt6_qstackedwidget_set_current_index(stack_ptr, step)
    # 导航高亮
    SetNavStyle(nav0_ptr, nav_active_qss if step == 0 else nav_idle_qss)
    SetNavStyle(nav1_ptr, nav_active_qss if step == 1 else nav_idle_qss)
    SetNavStyle(nav2_ptr, nav_active_qss if step == 2 else nav_idle_qss)
    SetNavStyle(nav3_ptr, nav_active_qss if step == 3 else nav_idle_qss)
    SetNavStyle(nav4_ptr, nav_active_qss if step == 4 else nav_idle_qss)


# ============================================================
# 步骤0：欢迎页
# ============================================================
def OnNext(slot_id: int, data: t.CPtr):
    GotoStep(1)


# ============================================================
# 步骤1：许可协议
# ============================================================
def OnLicenseToggled(slot_id: int, data: t.CPtr):
    """勾选"我接受"后启用下一步"""
    checked: int = vqt6.vqt6_qcheckbox_is_checked(agree_cb_ptr)
    vqt6.vqt6_qwidget_set_enabled(license_next_ptr, checked)


def OnLicenseNext(slot_id: int, data: t.CPtr):
    GotoStep(2)


def OnLicenseBack(slot_id: int, data: t.CPtr):
    GotoStep(0)


# ============================================================
# 步骤2：组件选择
# ============================================================
def OnBack(slot_id: int, data: t.CPtr):
    GotoStep(1)


def OnBrowse(slot_id: int, data: t.CPtr):
    global install_path
    p: str = vqt6.QFileDialog.getExistingDirectory(None, "选择安装目录", "C:/")
    if p is not None and p != "":
        install_path = p
        vqt6.vqt6_qlabel_set_text_utf8(path_label_ptr, p)


def UpdateDiskInfo():
    """按组件勾选统计磁盘占用"""
    total_mb: int = 0
    if vqt6.vqt6_qcheckbox_is_checked(comp0_ptr) != 0: total_mb += 850
    if vqt6.vqt6_qcheckbox_is_checked(comp1_ptr) != 0: total_mb += 1200
    if vqt6.vqt6_qcheckbox_is_checked(comp2_ptr) != 0: total_mb += 350
    if vqt6.vqt6_qcheckbox_is_checked(comp3_ptr) != 0: total_mb += 220
    if vqt6.vqt6_qcheckbox_is_checked(comp4_ptr) != 0: total_mb += 90
    buf: bytes = stdlib.malloc(96)
    viperlib.snprintf(buf, 96, "所需磁盘空间: %d MB / 可用 51200 MB", total_mb)
    vqt6.vqt6_qlabel_set_text_utf8(disk_ptr, buf)
    stdlib.free(buf)


def OnCompToggled(slot_id: int, data: t.CPtr):
    """组件勾选变化：重算勾选数 + 磁盘占用"""
    global comp_count
    n: int = 0
    if vqt6.vqt6_qcheckbox_is_checked(comp0_ptr) != 0: n += 1
    if vqt6.vqt6_qcheckbox_is_checked(comp1_ptr) != 0: n += 1
    if vqt6.vqt6_qcheckbox_is_checked(comp2_ptr) != 0: n += 1
    if vqt6.vqt6_qcheckbox_is_checked(comp3_ptr) != 0: n += 1
    if vqt6.vqt6_qcheckbox_is_checked(comp4_ptr) != 0: n += 1
    comp_count = n
    buf: bytes = stdlib.malloc(64)
    viperlib.snprintf(buf, 64, "已选择 %d 个组件", n)
    vqt6.vqt6_qlabel_set_text_utf8(summary_ptr, buf)
    stdlib.free(buf)
    UpdateDiskInfo()


def OnInstall(slot_id: int, data: t.CPtr):
    """进入安装页并启动模拟进度"""
    global progress_val
    vqt6.vqt6_qwidget_set_enabled(install_btn_ptr, 0)
    GotoStep(3)
    progress_val = 0
    vqt6.vqt6_qprogressbar_set_value(progress_ptr, 0)
    vqt6.vqt6_qlabel_set_text_utf8(progress_status_ptr, "正在准备安装环境...")
    vqt6.vqt6_qplaintextedit_append_utf8(log_ptr, "== 开始安装 Viper 6.0 ==\n")
    vqt6.vqt6_qtimer_start(timer_ptr, 80)


# ============================================================
# 步骤3：安装进度（QTimer 模拟）
# ============================================================
def OnProgressTick(slot_id: int, data: t.CPtr):
    global progress_val
    progress_val += 4
    vqt6.vqt6_qprogressbar_set_value(progress_ptr, progress_val)
    if progress_val == 4:
        vqt6.vqt6_qplaintextedit_append_utf8(log_ptr, "[1/4] 正在准备安装环境...\n")
    elif progress_val == 28:
        vqt6.vqt6_qlabel_set_text_utf8(progress_status_ptr, "正在复制核心文件...")
        vqt6.vqt6_qplaintextedit_append_utf8(log_ptr, "[2/4] 正在复制核心文件...\n")
    elif progress_val == 52:
        vqt6.vqt6_qlabel_set_text_utf8(progress_status_ptr, "正在配置 Qt6 组件...")
        vqt6.vqt6_qplaintextedit_append_utf8(log_ptr, "[3/4] 正在配置 Qt6 组件...\n")
    elif progress_val == 76:
        vqt6.vqt6_qlabel_set_text_utf8(progress_status_ptr, "正在注册系统组件...")
        vqt6.vqt6_qplaintextedit_append_utf8(log_ptr, "[4/4] 正在注册系统组件...\n")
    elif progress_val >= 100:
        vqt6.vqt6_qtimer_stop(timer_ptr)
        vqt6.vqt6_qplaintextedit_append_utf8(log_ptr, "安装完成！\n")
        # 完成页摘要（含安装选项）
        buf: bytes = stdlib.malloc(512)
        viperlib.snprintf(buf, 512, "安装位置: %s\n已安装组件: %d 个\nViper 6.0 已成功安装到您的系统。", install_path, comp_count)
        vqt6.vqt6_qlabel_set_text_utf8(finish_summary_ptr, buf)
        stdlib.free(buf)
        GotoStep(4)


# ============================================================
# 步骤4：完成页
# ============================================================
def OnFinish(slot_id: int, data: t.CPtr):
    vqt6.vqt6_qapplication_quit(app_ptr)


def main() -> int:
    global app_ptr, stack_ptr
    global nav0_ptr, nav1_ptr, nav2_ptr, nav3_ptr, nav4_ptr
    global progress_ptr, progress_status_ptr, log_ptr, path_label_ptr
    global summary_ptr, disk_ptr, finish_summary_ptr, timer_ptr
    global comp0_ptr, comp1_ptr, comp2_ptr, comp3_ptr, comp4_ptr
    global agree_cb_ptr, license_next_ptr, install_btn_ptr
    global opt0_ptr, opt1_ptr, opt2_ptr

    app = vqt6.QApplication(t.CPtr(0))
    app_ptr = t.CPtr(app._ptr)

    # 主窗口
    win = vqt6.QMainWindow()
    win.setWindowTitle("Viper 6.0 Installer")
    win.resize(920, 600)

    central = vqt6.QWidget()
    central.setStyleSheet(dark_qss)
    win.setCentralWidget(central._ptr)

    root = vqt6.QHBoxLayout(central)

    # ===== 左导航面板 =====
    nav_panel = vqt6.QWidget()
    vqt6.vqt6_qwidget_set_fixed_size(nav_panel._ptr, 210, 600)
    nav_box = vqt6.QVBoxLayout(nav_panel)
    nav_box.setContentsMargins(10, 16, 10, 10)
    nav_box.setSpacing(6)

    title_lb = vqt6.QLabel("Viper 6.0")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(title_lb._ptr, "font-size: 20px; color: #4a86c8; font-weight: bold; padding: 6px 14px;")
    nav_box.addWidget(title_lb._ptr)

    nav0 = vqt6.QLabel("欢迎")
    nav0.setStyleSheet(nav_active_qss)
    nav_box.addWidget(nav0._ptr)
    nav0_ptr = t.CPtr(nav0._ptr)

    nav1 = vqt6.QLabel("许可协议")
    nav1.setStyleSheet(nav_idle_qss)
    nav_box.addWidget(nav1._ptr)
    nav1_ptr = t.CPtr(nav1._ptr)

    nav2 = vqt6.QLabel("组件选择")
    nav2.setStyleSheet(nav_idle_qss)
    nav_box.addWidget(nav2._ptr)
    nav2_ptr = t.CPtr(nav2._ptr)

    nav3 = vqt6.QLabel("安装进度")
    nav3.setStyleSheet(nav_idle_qss)
    nav_box.addWidget(nav3._ptr)
    nav3_ptr = t.CPtr(nav3._ptr)

    nav4 = vqt6.QLabel("完成")
    nav4.setStyleSheet(nav_idle_qss)
    nav_box.addWidget(nav4._ptr)
    nav4_ptr = t.CPtr(nav4._ptr)

    nav_box.addStretch(1)
    ver_lb = vqt6.QLabel("v6.0.1 · 2026")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(ver_lb._ptr, "color: #666666; padding: 6px 14px;")
    nav_box.addWidget(ver_lb._ptr)

    root.addWidget(nav_panel._ptr)

    # ===== 右侧步骤容器 =====
    stack = vqt6.QStackedWidget()
    root.addWidget(stack._ptr)
    stack_ptr = t.CPtr(stack._ptr)

    # ---------- 页0：欢迎 ----------
    page0 = vqt6.QWidget()
    p0 = vqt6.QVBoxLayout(page0)
    p0.setContentsMargins(36, 40, 36, 24)
    p0.setSpacing(12)

    big = vqt6.QLabel("Viper 6.0")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(big._ptr, "font-size: 34px; color: #ffffff; font-weight: bold;")
    p0.addWidget(big._ptr)

    sub = vqt6.QLabel("为 Viper 语言平台安装工具链、Qt6 运行时与开发组件")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(sub._ptr, "font-size: 16px; color: #9cdcfe;")
    p0.addWidget(sub._ptr)

    desc = vqt6.QLabel("本向导将引导您完成 Viper 6.0 的安装。您可以自定义要安装的组件\n和安装位置，安装过程由模拟进度与日志展示（演示界面，无真实安装行为）。")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(desc._ptr, "font-size: 13px; color: #9a9a9a;")
    p0.addWidget(desc._ptr)

    p0.addStretch(1)
    next_btn = vqt6.QPushButton("下一步 >")
    p0.addWidget(next_btn._ptr)
    next_btn.clicked(OnNext, 0)

    stack.addWidget(page0._ptr)

    # ---------- 页1：许可协议 ----------
    page1 = vqt6.QWidget()
    p1 = vqt6.QVBoxLayout(page1)
    p1.setContentsMargins(36, 32, 36, 24)
    p1.setSpacing(10)

    lh = vqt6.QLabel("许可协议")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(lh._ptr, "font-size: 22px; color: #ffffff; font-weight: bold;")
    p1.addWidget(lh._ptr)

    license_box = vqt6.QPlainTextEdit()
    license_box.setPlainText(license_text)
    license_box.setReadOnly(1)
    p1.addWidget(license_box._ptr)

    agree_cb = vqt6.QCheckBox("我接受许可协议中的条款")
    p1.addWidget(agree_cb._ptr)
    agree_cb_ptr = t.CPtr(agree_cb._ptr)
    agree_cb.toggled(OnLicenseToggled, 0)

    lbrow = vqt6.QHBoxLayout()
    p1.addLayout(lbrow._ptr)
    lbrow.addStretch(1)
    lic_back = vqt6.QPushButton("< 上一步")
    lbrow.addWidget(lic_back._ptr)
    lic_back.clicked(OnLicenseBack, 0)
    lic_next = vqt6.QPushButton("下一步 >")
    lic_next.setEnabled(0)
    lbrow.addWidget(lic_next._ptr)
    license_next_ptr = t.CPtr(lic_next._ptr)
    lic_next.clicked(OnLicenseNext, 0)

    stack.addWidget(page1._ptr)

    # ---------- 页2：组件选择 ----------
    page2 = vqt6.QWidget()
    p2 = vqt6.QVBoxLayout(page2)
    p2.setContentsMargins(36, 28, 36, 20)
    p2.setSpacing(8)

    h2 = vqt6.QLabel("选择要安装的组件")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(h2._ptr, "font-size: 22px; color: #ffffff; font-weight: bold;")
    p2.addWidget(h2._ptr)

    h2b = vqt6.QLabel("勾选您需要的工作负载与组件，取消勾选可减少安装体积与磁盘占用。")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(h2b._ptr, "font-size: 13px; color: #9a9a9a;")
    p2.addWidget(h2b._ptr)

    comp0 = vqt6.QCheckBox("Viper 核心工具链（编译器 + 运行时）[850 MB]")
    comp0.setChecked(1)
    p2.addWidget(comp0._ptr)
    comp0_ptr = t.CPtr(comp0._ptr)

    comp1 = vqt6.QCheckBox("Qt6 桌面开发（GUI 框架 + vqt6 桥接库）[1200 MB]")
    comp1.setChecked(1)
    p2.addWidget(comp1._ptr)
    comp1_ptr = t.CPtr(comp1._ptr)

    comp2 = vqt6.QCheckBox("Viper 标准库与 includes 包 [350 MB]")
    comp2.setChecked(1)
    p2.addWidget(comp2._ptr)
    comp2_ptr = t.CPtr(comp2._ptr)

    comp3 = vqt6.QCheckBox("网络与调试工具（QtNetwork + TPV）[220 MB]")
    comp3.setChecked(0)
    p2.addWidget(comp3._ptr)
    comp3_ptr = t.CPtr(comp3._ptr)

    comp4 = vqt6.QCheckBox("示例项目与文档 [90 MB]")
    comp4.setChecked(0)
    p2.addWidget(comp4._ptr)
    comp4_ptr = t.CPtr(comp4._ptr)

    comp0.toggled(OnCompToggled, comp0._ptr)
    comp1.toggled(OnCompToggled, comp1._ptr)
    comp2.toggled(OnCompToggled, comp2._ptr)
    comp3.toggled(OnCompToggled, comp3._ptr)
    comp4.toggled(OnCompToggled, comp4._ptr)

    summary = vqt6.QLabel("已选择 3 个组件")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(summary._ptr, "font-size: 13px; color: #9cdcfe;")
    p2.addWidget(summary._ptr)
    summary_ptr = t.CPtr(summary._ptr)

    disk = vqt6.QLabel("所需磁盘空间: 2400 MB / 可用 51200 MB")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(disk._ptr, "font-size: 13px; color: #9cdcfe;")
    p2.addWidget(disk._ptr)
    disk_ptr = t.CPtr(disk._ptr)

    # 安装选项
    oh = vqt6.QLabel("安装选项")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(oh._ptr, "font-size: 15px; color: #ffffff; font-weight: bold; padding-top: 6px;")
    p2.addWidget(oh._ptr)

    opt0 = vqt6.QCheckBox("创建开始菜单快捷方式")
    opt0.setChecked(1)
    p2.addWidget(opt0._ptr)
    opt0_ptr = t.CPtr(opt0._ptr)

    opt1 = vqt6.QCheckBox("将 viper 命令添加到系统 PATH")
    opt1.setChecked(0)
    p2.addWidget(opt1._ptr)
    opt1_ptr = t.CPtr(opt1._ptr)

    opt2 = vqt6.QCheckBox("创建桌面图标")
    opt2.setChecked(0)
    p2.addWidget(opt2._ptr)
    opt2_ptr = t.CPtr(opt2._ptr)

    # 安装位置行
    path_row = vqt6.QHBoxLayout()
    p2.addLayout(path_row._ptr)
    path_lb = vqt6.QLabel("安装位置:")
    path_row.addWidget(path_lb._ptr)
    path_lb2 = vqt6.QLabel(install_path)
    vqt6.vqt6_qwidget_set_stylesheet_utf8(path_lb2._ptr, "background-color: #252526; border: 1px solid #555555; border-radius: 3px; padding: 5px 8px; color: #ffffff;")
    path_row.addWidget(path_lb2._ptr)
    path_label_ptr = t.CPtr(path_lb2._ptr)
    browse_btn = vqt6.QPushButton("浏览...")
    path_row.addWidget(browse_btn._ptr)
    browse_btn.clicked(OnBrowse, 0)

    p2.addStretch(1)

    btn_row2 = vqt6.QHBoxLayout()
    p2.addLayout(btn_row2._ptr)
    btn_row2.addStretch(1)
    back_btn = vqt6.QPushButton("< 上一步")
    btn_row2.addWidget(back_btn._ptr)
    back_btn.clicked(OnBack, 0)
    install_btn = vqt6.QPushButton("安装")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(install_btn._ptr, "background-color: #2a6da8; border: 1px solid #2a6da8; border-radius: 4px; padding: 8px 22px; color: #ffffff; font-size: 14px; font-weight: bold;")
    btn_row2.addWidget(install_btn._ptr)
    install_btn_ptr = t.CPtr(install_btn._ptr)
    install_btn.clicked(OnInstall, 0)

    stack.addWidget(page2._ptr)

    # ---------- 页3：安装进度 ----------
    page3 = vqt6.QWidget()
    p3 = vqt6.QVBoxLayout(page3)
    p3.setContentsMargins(36, 36, 36, 24)
    p3.setSpacing(12)

    h3 = vqt6.QLabel("正在安装 Viper 6.0...")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(h3._ptr, "font-size: 22px; color: #ffffff; font-weight: bold;")
    p3.addWidget(h3._ptr)

    prog = vqt6.QProgressBar()
    prog.setRange(0, 100)
    prog.setValue(0)
    p3.addWidget(prog._ptr)
    progress_ptr = t.CPtr(prog._ptr)

    pstat = vqt6.QLabel("正在准备安装环境...")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(pstat._ptr, "font-size: 13px; color: #9a9a9a;")
    p3.addWidget(pstat._ptr)
    progress_status_ptr = t.CPtr(pstat._ptr)

    log = vqt6.QPlainTextEdit()
    log.setReadOnly(1)
    p3.addWidget(log._ptr)
    log_ptr = t.CPtr(log._ptr)

    stack.addWidget(page3._ptr)

    # ---------- 页4：完成 ----------
    page4 = vqt6.QWidget()
    p4 = vqt6.QVBoxLayout(page4)
    p4.setContentsMargins(36, 40, 36, 24)
    p4.setSpacing(14)

    ok = vqt6.QLabel("安装完成")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(ok._ptr, "font-size: 30px; color: #4ec9b0; font-weight: bold;")
    p4.addWidget(ok._ptr)

    fsum = vqt6.QLabel("")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(fsum._ptr, "font-size: 14px; color: #d4d4d4;")
    p4.addWidget(fsum._ptr)
    finish_summary_ptr = t.CPtr(fsum._ptr)

    p4.addStretch(1)
    finish_btn = vqt6.QPushButton("完成")
    vqt6.vqt6_qwidget_set_stylesheet_utf8(finish_btn._ptr, "background-color: #2a6da8; border-radius: 4px; padding: 8px 22px; color: #ffffff; font-size: 14px; font-weight: bold;")
    p4.addWidget(finish_btn._ptr)
    finish_btn.clicked(OnFinish, 0)

    stack.addWidget(page4._ptr)

    # ===== 定时器（模拟安装进度） =====
    timer = vqt6.QTimer()
    timer.timeout(OnProgressTick, 0)
    timer_ptr = t.CPtr(timer._ptr)

    GotoStep(0)
    win.show()
    return app.exec()