137 lines
2.9 KiB
C++
137 lines
2.9 KiB
C++
#include "winbase.h"
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static HWND s_HWnd = nullptr;
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static ID2D1Factory * s_pDirect2dFactory = nullptr;
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static ID2D1HwndRenderTarget * s_pRenderTarget = nullptr;
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static ID2D1SolidColorBrush * s_pSolidBrush = nullptr;
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static IWICImagingFactory * s_pIWICFactory = nullptr;
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static IDWriteFactory * s_pDWriteFactory = nullptr;
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static LARGE_INTEGER s_tNow;
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static LARGE_INTEGER s_tFreq;
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HWND &GetHWnd()
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{
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return s_HWnd;
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}
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ID2D1Factory * &GetFactory()
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{
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if (!s_pDirect2dFactory)
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{
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// 创建设备无关资源，它们的生命周期和程序的时长相同
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HRESULT hr = S_OK;
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// 创建一个 Direct2D 工厂
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hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &s_pDirect2dFactory);
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ASSERT(SUCCEEDED(hr), "Create Device Independent Resources Failed!");
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}
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return s_pDirect2dFactory;
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}
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ID2D1HwndRenderTarget * &GetRenderTarget()
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{
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if (!s_pRenderTarget)
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{
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// 创建设备相关资源。这些资源应在 Direct3D 设备消失时重建，
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// 比如当 isVisiable 被修改，等等
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RECT rc;
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GetClientRect(GetHWnd(), &rc);
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D2D1_SIZE_U size = D2D1::SizeU(
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rc.right - rc.left,
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rc.bottom - rc.top
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);
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// 创建一个 Direct2D 渲染目标
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HRESULT hr;
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hr = GetFactory()->CreateHwndRenderTarget(
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D2D1::RenderTargetProperties(),
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D2D1::HwndRenderTargetProperties(
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GetHWnd(),
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size),
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&s_pRenderTarget
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);
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ASSERT(SUCCEEDED(hr), "Create Render Target Failed! Maybe you should initalize EApp first.");
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}
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return s_pRenderTarget;
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}
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IWICImagingFactory * &GetImagingFactory()
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{
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if (!s_pIWICFactory)
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{
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// 创建 WIC 绘图工厂，用于统一处理各种格式的图片
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HRESULT hr = CoCreateInstance(
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CLSID_WICImagingFactory,
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NULL,
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CLSCTX_INPROC_SERVER,
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IID_IWICImagingFactory,
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reinterpret_cast<void**>(&s_pIWICFactory)
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);
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ASSERT(SUCCEEDED(hr), "Create WICImagingFactory Failed!");
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}
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return s_pIWICFactory;
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}
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IDWriteFactory * &GetDirectWriteFactory()
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{
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if (!s_pDWriteFactory)
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{
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// 创建 DirectWrite 工厂
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HRESULT hr = DWriteCreateFactory(
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DWRITE_FACTORY_TYPE_SHARED,
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__uuidof(IDWriteFactory),
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reinterpret_cast<IUnknown**>(&s_pDWriteFactory)
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);
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ASSERT(SUCCEEDED(hr), "Create DirectWrite Factory Failed!");
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}
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return s_pDWriteFactory;
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}
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ID2D1SolidColorBrush * &GetSolidColorBrush()
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{
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if (!s_pSolidBrush)
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{
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HRESULT hr;
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hr = GetRenderTarget()->CreateSolidColorBrush(
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D2D1::ColorF(D2D1::ColorF::White),
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&s_pSolidBrush
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);
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ASSERT(SUCCEEDED(hr), "Create Solid Color Brush Failed!");
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}
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return s_pSolidBrush;
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}
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LARGE_INTEGER &GetFreq()
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{
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if (s_tFreq.QuadPart == 0)
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{
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QueryPerformanceFrequency(&s_tFreq); // 获取时钟频率
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}
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return s_tFreq;
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}
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LARGE_INTEGER &GetNow()
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{
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return s_tNow;
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}
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bool IsIntervalFull(const LARGE_INTEGER& tLast, const LARGE_INTEGER& tInterval)
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{
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return (s_tNow.QuadPart - tLast.QuadPart) >= tInterval.QuadPart;
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}
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LONGLONG ToMilliseconds(LONGLONG tLast)
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{
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return tLast * 1000LL / GetFreq().QuadPart;
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}
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void SetInterval(LARGE_INTEGER& nInterval, LONGLONG nIntervalMS)
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{
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nInterval.QuadPart = static_cast<LONGLONG>(GetFreq().QuadPart * nIntervalMS / 1000.0);
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}
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