Window API

// 创建窗口
pa2d::Window window(800, 600, "PA2D 示例窗口");

// 创建画布并绘制内容
pa2d::Canvas canvas(800, 600, pa2d::White);
canvas.circle(400, 300, 200, pa2d::Red_fill + 2.0_w)
      .textCentered(400, 300, L"Hello PA2D!", 36, pa2d::Black);

// 显示窗口（必须先显示）
window.show();

// 渲染内容到窗口
window.render(canvas);

// 更新内容并重新渲染
canvas.circle(400, 300, 150, pa2d::Blue_fill + 2.0_w);
window.render(canvas); // 需要再次调用 render() 更新显示

// 居中渲染
pa2d::Canvas smallCanvas(400, 300, pa2d::Green);
window.renderCentered(smallCanvas);

// 阻塞等待窗口关闭
window.waitForClose();

pa2d::Window window(800, 600, "事件处理示例");

// 键盘事件处理
window.onKey([](const pa2d::KeyEvent& event) {
    if (event.pressed) {
        std::cout << "按键按下: " << event.key << std::endl;
        if (event.key == VK_ESCAPE) {
            std::cout << "ESC 键被按下" << std::endl;
        }
    } else {
        std::cout << "按键释放: " << event.key << std::endl;
    }
});

// 鼠标事件处理
window.onMouse([](const pa2d::MouseEvent& event) {
    if (event.button == -2) { // 鼠标移动
        std::cout << "鼠标移动到: (" << event.x << ", " << event.y << ")" << std::endl;
    } else if (event.button == 0) { // 左键
        if (event.pressed) {
            std::cout << "左键按下 at (" << event.x << ", " << event.y << ")" << std::endl;
        } else {
            std::cout << "左键释放 at (" << event.x << ", " << event.y << ")" << std::endl;
        }
    } else if (event.button == -1) { // 滚轮
        std::cout << "滚轮滚动: " << event.wheelDelta << std::endl;
    }
});

// 窗口尺寸变化处理
window.onResize([](int width, int height) {
    std::cout << "窗口尺寸改变: " << width << " x " << height << std::endl;
    // 需要重新渲染内容以适应新尺寸
});

// 窗口关闭确认
window.onClose([]() {
    std::cout << "确认关闭窗口吗？" << std::endl;
    // 返回 false 可阻止窗口关闭
    return true; // 允许关闭
});

// 字符输入
window.onChar([](wchar_t ch) {
    std::wcout << L"输入字符: " << ch << std::endl;
});

// 文件拖放支持
window.enableFileDrop();
window.onFileDrop([](const std::vector& files) {
    std::cout << "拖放了 " << files.size() << " 个文件:" << std::endl;
    for (const auto& file : files) {
        std::cout << "  - " << file << std::endl;
    }
});

window.show();
window.waitForClose();

pa2d::Window window(800, 600, "菜单示例");

// 创建主菜单
pa2d::Window::HMENU mainMenu = window.createMenu();

// 创建文件子菜单
pa2d::Window::HMENU fileMenu = window.createPopupMenu();
window.appendMenuItem(fileMenu, "新建(&N)", 1001)
      .appendMenuItem(fileMenu, "打开(&O)", 1002)
      .appendMenuSeparator(fileMenu)
      .appendMenuItem(fileMenu, "保存(&S)", 1003)
      .appendMenuItem(fileMenu, "另存为(&A)", 1004)
      .appendMenuSeparator(fileMenu)
      .appendMenuItem(fileMenu, "退出(&X)", 1005);

// 创建编辑子菜单
pa2d::Window::HMENU editMenu = window.createPopupMenu();
window.appendMenuItem(editMenu, "撤销(&U)", 2001)
      .appendMenuItem(editMenu, "重做(&R)", 2002)
      .appendMenuSeparator(editMenu)
      .appendMenuItem(editMenu, "剪切(&T)", 2003)
      .appendMenuItem(editMenu, "复制(&C)", 2004)
      .appendMenuItem(editMenu, "粘贴(&P)", 2005);

// 将子菜单添加到主菜单
window.appendMenuPopup(mainMenu, "文件(&F)", fileMenu)
      .appendMenuPopup(mainMenu, "编辑(&E)", editMenu);

// 设置窗口菜单
window.setMenu(mainMenu);

// 菜单项点击处理
window.onMenu([](int menuId) {
    switch (menuId) {
        case 1001: std::cout << "新建文件" << std::endl; break;
        case 1002: std::cout << "打开文件" << std::endl; break;
        case 1003: std::cout << "保存文件" << std::endl; break;
        case 1005: std::cout << "退出程序" << std::endl; break;
        case 2003: std::cout << "剪切" << std::endl; break;
        case 2004: std::cout << "复制" << std::endl; break;
        case 2005: std::cout << "粘贴" << std::endl; break;
    }
});

window.show();
window.waitForClose();

// 清理菜单
window.destroyMenu(mainMenu);

// Windows 虚拟键码（部分常用）
#include <windows.h>    // 或包含 Windows 头文件以获取 VK_ 常量
#define VK_LBUTTON    0x01    // 鼠标左键
#define VK_RBUTTON    0x02    // 鼠标右键
#define VK_MBUTTON    0x04    // 鼠标中键
#define VK_BACK       0x08    // Backspace 键
#define VK_TAB        0x09    // Tab 键
#define VK_RETURN     0x0D    // Enter 键
#define VK_SHIFT      0x10    // Shift 键
#define VK_CONTROL    0x11    // Ctrl 键
#define VK_MENU       0x12    // Alt 键
#define VK_ESCAPE     0x1B    // Esc 键
#define VK_SPACE      0x20    // 空格键
#define VK_PRIOR      0x21    // Page Up
#define VK_NEXT       0x22    // Page Down
#define VK_END        0x23    // End 键
#define VK_HOME       0x24    // Home 键
#define VK_LEFT       0x25    // 左箭头
#define VK_UP         0x26    // 上箭头
#define VK_RIGHT      0x27    // 右箭头
#define VK_DOWN       0x28    // 下箭头
#define VK_INSERT     0x2D    // Insert 键
#define VK_DELETE     0x2E    // Delete 键

// 字母键 'A' - 'Z' 对应 0x41 - 0x5A
// 数字键 '0' - '9' 对应 0x30 - 0x39
// 功能键 F1 - F24 对应 0x70 - 0x87

// 获取窗口句柄
pa2d::Window window(800, 600);
pa2d::Window::HWND hwnd = window.getHandle();

// 使用系统函数时需要类型转换
#ifdef _WIN32
#include <windows.h>

// 将 pa2d::Window::HWND 转换为 Windows HWND
HWND winHwnd = static_cast<HWND>(hwnd);

// 使用 Windows API
SetWindowTextW(winHwnd, L"新的窗口标题");

// 将 Windows COLORREF 转换为 pa2d::Window::COLORREF
pa2d::Window::COLORREF bgColor = RGB(255, 0, 0); // 红色背景

// 渲染时使用颜色
window.render(canvas, 0, 0, 0, 0, -1, -1, true, bgColor);
#endif

// 获取系统信息
pa2d::Point mousePos = pa2d::getGlobalMousePosition();
std::cout << "全局鼠标位置: (" << mousePos.x << ", " << mousePos.y << ")" << std::endl;

pa2d::Point screenSize = pa2d::getScreenSize();
std::cout << "屏幕尺寸: " << screenSize.x << " x " << screenSize.y << std::endl;

pa2d::Point workArea = pa2d::getWorkAreaSize();
std::cout << "工作区尺寸: " << workArea.x << " x " << workArea.y << std::endl;

double dpiScale = pa2d::getDpiScale();
std::cout << "DPI 缩放比例: " << dpiScale << std::endl;

// 根据屏幕尺寸创建窗口
int windowWidth = static_cast(screenSize.x * 0.8);
int windowHeight = static_cast(screenSize.y * 0.8);
pa2d::Window window(windowWidth, windowHeight, "自适应窗口");

// 将窗口居中
int centerX = static_cast((screenSize.x - windowWidth) / 2);
int centerY = static_cast((screenSize.y - windowHeight) / 2);
window.setPosition(centerX, centerY);

window.show();
window.waitForClose();