kanzi做3d时钟屏保

用kanzi做一个3d屏保

1. blender制作3d数字模型

下载一些好看的字体文件，用blender建模字体模型，导出fbx格式

2. 新建kanzi工程

导入fbx模型，创建节点，时分秒节点，最上面放一个按钮，用来点击

根据喜好给个火焰贴图，在shader里让uv随时间移动

screen背景透明

3. 代码

3.1 识别桌面分辨率

c 复制代码

Application* createApplication()
{
    //获取win 桌面分辨率
     // 获取桌面窗口的句柄
    HWND hDesktopWnd = GetDesktopWindow();

    // 获取桌面窗口的设备上下文句柄
    HDC hDesktopDC = GetDC(hDesktopWnd);

    screenWidth = GetSystemMetrics(SM_CXSCREEN);
    screenHeight = GetSystemMetrics(SM_CYSCREEN);
    printf("screenWidth:%d, screenHeight:%d\n", screenWidth, screenHeight);

    // 释放设备上下文句柄
    ReleaseDC(hDesktopWnd, hDesktopDC);

    return new DesktopTime;
}

3.2 设置窗口透明

c 复制代码

    virtual void onProjectLoaded() KZ_OVERRIDE
    {
        // Project file has been loaded from .kzb file.

        // Add initialization code here.

        // 使用FindWindow函数查找窗口句柄
        hwnd = FindWindow(L"KanziWindow", NULL);
        //Transparent background
        LONG ret = ::GetWindowLong(hwnd, GWL_EXSTYLE);
        ret = ret | WS_EX_LAYERED;
        ::SetWindowLong(hwnd, GWL_EXSTYLE, ret);
        ::SetLayeredWindowAttributes(hwnd, RGB(0, 0, 0), 255, LWA_COLORKEY | LWA_ALPHA);

3.3 绑定按键

c 复制代码

 kanzi::TimerSubscriptionToken timerid = addTimerHandler(this->getMessageDispatcher(), kanzi::chrono::milliseconds(20), KZU_TIMER_MESSAGE_MODE_REPEAT, bind(&DesktopTime::onTimeOutEventHandler, this));

        Button2DSharedPtr btn = getScreen()->lookupNode<Button2D>("#Button 2D");

        if (btn) {
            btn->addMessageHandler(Button2D::PressedMessage, bind(&DesktopTime::onBtnClicked, this, std::placeholders::_1));
        }

点击屏幕控制开关

c 复制代码

void onBtnClicked(ButtonConcept::PressedMessageArguments& messageArguments)
    {
        (void)messageArguments;
        //kzLogDebug(("{} {} ", __FUNCTION__, isOpen));

        isOpen = !isOpen;

3.4 定时器更新时间和动画坐标

c 复制代码

void onTimeOutEventHandler()
    {
        m_anim->Update(20);

        PageHostSharedPtr p = getScreen()->lookupNode<PageHost>("#RootPage");
        if (p) {
            //获取系统时间
            SYSTEMTIME st;
            GetLocalTime(&st);

            //设置时间
            p->setProperty(DynamicPropertyType<int>("DesktopTime.hour1"), st.wHour >= 10 ? (int)(st.wHour / 10) : 0);
            p->setProperty(DynamicPropertyType<int>("DesktopTime.hour2"), st.wHour >= 10 ? st.wHour % 10 : st.wHour);

            p->setProperty(DynamicPropertyType<int>("DesktopTime.minute1"), st.wMinute >= 10 ? st.wMinute / 10 : 0);
            p->setProperty(DynamicPropertyType<int>("DesktopTime.minute2"), st.wMinute >= 10 ? st.wMinute % 10 : st.wMinute);

            p->setProperty(DynamicPropertyType<int>("DesktopTime.sec1"), st.wSecond >= 10 ? st.wSecond / 10 : 0);
            p->setProperty(DynamicPropertyType<int>("DesktopTime.sec2"), st.wSecond >= 10 ? st.wSecond % 10 : st.wSecond);

            p->setProperty(DynamicPropertyType<int>("DesktopTime.ScreenPosY"), m_y - screenHeight);
        }

4. 效果

运行程序，桌面显示全屏3d数字屏保

点击画面，屏保向上退出，在屏幕顶显示黑条

点击黑条，屏保向下出现