C++ 水波纹效果Water

// 程序需要的头文件 #include "stdafx.h" #include <strsafe.h> #include < Mmsystem.h > #pragma comment(lib,"scrnsave.lib") //使用库文件 #pragma comment(lib,"comctl32.lib") #pragma comment(lib,"Winmm.lib") #include "fileNamelist.h" #include "resource.h" #include "time.h" #include "watersurf.h" #include "stack.h" extern HINSTANCE hMainInstance; // screen saver instance handle //CHAR szAppName[80]; // .ini section name CHAR szTemp[20]; // temporary array of characters CHAR szWaterScrExculpation[ ] = "Water Scr Exculpation"; CHAR szWaterScrShowSize[ ] = "Water Scr Show Size"; CHAR szWaterScrPullQ[ ] = "Water Scr PullQ"; CHAR szWaterScrDampQ[ ] = "Water Scr DampQ"; CHAR szWaterScrRadius[ ] = "Water Scr Radius"; CHAR szWaterScrStrength[ ] = "Water Scr Strength"; CHAR szWaterScrFrequency[ ] = "Water Scr Frequency"; CHAR szWaterScrHeight[ ] = "Water Scr Height"; CHAR szWaterScrWindow[ ] = "Water Scr Window"; CHAR szWaterScrZoom[ ] = "Water Scr Zoom"; CHAR szWaterScrSlide[ ] = "Water Scr Slide"; CHAR szWaterScrPath[ ] = "Water Scr Path"; CHAR szWaterScrSpeed[ ] = "Water Scr Speed"; CHAR szWaterScrWaveLevel[ ] = "Water Scr Wave"; CHAR szIniFile[MAXFILELEN]; // .ini or registry file name const LONG MIN_EXCULPATION = 1; const LONG MAX_EXCULPATION = 128; const LONG DEF_EXCULPATION = 16; const LONG MIN_SHOWSIZE = 1; const LONG MAX_SHOWSIZE = 128; const LONG DEF_SHOWSIZE = 12; const LONG MIN_PULLQ = 10; const LONG MAX_PULLQ = 200; const LONG DEF_PULLQ = 100; const LONG MIN_DAMPQ = 0; const LONG MAX_DAMPQ = 100; const LONG DEF_DAMPQ = 1; const LONG MIN_RADIUS = 1; const LONG MAX_RADIUS = 100; const LONG DEF_RADIUS = 6; const LONG MIN_STRENGTH = 10; const LONG MAX_STRENGTH = 10000; const LONG DEF_STRENGTH = 600; const LONG MIN_FREQUENCY = 10; const LONG MAX_FREQUENCY = 100; const LONG DEF_FREQUENCY = 50; const LONG MIN_WAVE_LEVEL = 1; const LONG MAX_WAVE_LEVEL = 10; const LONG DEF_WAVE_LEVEL = 1; const LONG DEF_WINDOW = 0; const LONG DEF_ZOOM = 1; const LONG DEF_SLIDE = 1; const char DEF_PATH[] = "C:\\Documents and Settings\\All Users\\Documents\\My Pictures\\示例图片"; const LONG MIN_UPDATE_SPEED = 10; const LONG MAX_UPDATE_SPEED = 1000; const LONG DEF_UPDATE_SPEED = 32; LONG lExculpation; LONG lShowSize; LONG lPullQ; LONG lDampQ; LONG lRadius; LONG lStrength; LONG lFrequency; LONG lWaveLevel; LONG lWindow; LONG lZoom; LONG lSlide; char szPath[4096]; LONG lSpeed; CFileNameList fnlList; int g_iWavNum = 6; LPSTR g_lpstrWave[] = { "IDR_WAVE1" ,"IDR_WAVE2" ,"IDR_WAVE3" ,"IDR_WAVE4" ,"IDR_WAVE5" ,"IDR_WAVE6" }; BOOL PlayResource(LPSTR lpName) { BOOL bRtn; LPVOID lpRes; HRSRC hResInfo; HGLOBAL hRes; // Find the WAVE resource. hResInfo = FindResource(hMainInstance, lpName, "WAVE"); if (hResInfo == NULL) return FALSE; // Load the WAVE resource. hRes = LoadResource(hMainInstance, hResInfo); if (hRes == NULL) return FALSE; // Lock the WAVE resource and play it. lpRes = LockResource(hRes); if (lpRes != NULL) { bRtn = sndPlaySound(LPCSTR(lpRes), SND_MEMORY | SND_ASYNC | SND_NODEFAULT); UnlockResource(hRes); } else bRtn = 0; // Free the WAVE resource and return success or failure. FreeResource(hRes); return bRtn; } int g_iScreencx; int g_iScreency; CWaterSurf g_waterSurf; void CALLBACK EXPORT TimerProc( HWND hWnd, // handle of CWnd that called SetTimer UINT nMsg, // WM_TIMER UINT nIDEvent, // timer identification DWORD dwTime // system time ) { static cx, cy; static ecx, ecy; switch(nIDEvent) { case 1: ::InvalidateRect(hWnd, NULL, false); break; case 2: { int dx = 0, dy = 0; float zoomRatex = 1.0f; float zoomRatey = 1.0f; fnlList.Rand(); CDC DCDesktop; DCDesktop.Attach(::GetDC(NULL)); if(lShowSize > lExculpation) { lShowSize = lExculpation; } g_waterSurf.SetGridSize(lShowSize); if(lSlide && fnlList.Count()) { CImage img; if(FAILED(img.Load(fnlList.GetFileName()))) { if(lZoom) { g_waterSurf.SetImage(0 ,0 ,cx, cy, &DCDesktop, true); zoomRatex = (ecx - 1) * lShowSize / float(cx); zoomRatey = (ecy - 1) * lShowSize / float(cy); } else { dx = (cx - (ecx - 1) * lShowSize) / 2; dy = (cy - (ecy - 1) * lShowSize) / 2; g_waterSurf.SetImage(dx ,dy ,(ecx) * lShowSize, (ecy) * lShowSize, &DCDesktop, false); } } CDC tdc; tdc.CreateCompatibleDC(&DCDesktop); CBitmap bmp; bmp.CreateCompatibleBitmap(&DCDesktop, img.GetWidth(), img.GetHeight()); tdc.SelectObject(&bmp); img.BitBlt(HDC(tdc), 0, 0, SRCCOPY); if(lZoom) { g_waterSurf.SetImage(0 ,0 ,img.GetWidth(), img.GetHeight(), &tdc, true); zoomRatex = (ecx - 1) * lShowSize / float(img.GetWidth()); zoomRatey = (ecy - 1) * lShowSize / float(img.GetHeight()); } else { dx = (img.GetWidth() - (ecx - 1) * lShowSize) / 2; dy = (img.GetHeight() - (ecy - 1) * lShowSize) / 2; g_waterSurf.SetImage(dx ,dy ,(ecx) * lShowSize, (ecy) * lShowSize, &tdc, false); } } } break; default: break; } } LRESULT CALLBACK ScreenSaverProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { static cx, cy; static ecx, ecy; switch (message) { case WM_CREATE: { ::g_iScreencx = ::GetSystemMetrics(SM_CXSCREEN); ::g_iScreency = ::GetSystemMetrics(SM_CYSCREEN); // Retrieve the application name from the .rc file. LoadString(hMainInstance, idsAppName, szAppName, 80 * sizeof(TCHAR)); // Retrieve the .ini (or registry) file name. LoadString(hMainInstance, idsIniFile, szIniFile, MAXFILELEN * sizeof(TCHAR)); lExculpation = GetPrivateProfileInt(szAppName, szWaterScrExculpation, DEF_EXCULPATION, szIniFile); lShowSize = GetPrivateProfileInt(szAppName, szWaterScrShowSize, DEF_SHOWSIZE, szIniFile); lPullQ = GetPrivateProfileInt(szAppName, szWaterScrPullQ, DEF_PULLQ, szIniFile); lDampQ = GetPrivateProfileInt(szAppName, szWaterScrDampQ, DEF_DAMPQ, szIniFile); lRadius = GetPrivateProfileInt(szAppName, szWaterScrRadius, DEF_RADIUS, szIniFile); lStrength = GetPrivateProfileInt(szAppName, szWaterScrStrength, DEF_STRENGTH, szIniFile); lFrequency = GetPrivateProfileInt(szAppName, szWaterScrFrequency, DEF_FREQUENCY, szIniFile); lWaveLevel = GetPrivateProfileInt(szAppName, szWaterScrWaveLevel, DEF_WAVE_LEVEL, szIniFile); lWindow = GetPrivateProfileInt(szAppName, szWaterScrWindow, DEF_WINDOW, szIniFile); lZoom = GetPrivateProfileInt(szAppName, szWaterScrZoom, DEF_ZOOM, szIniFile); lSlide = GetPrivateProfileInt(szAppName, szWaterScrSlide, DEF_SLIDE, szIniFile); GetPrivateProfileString(szAppName, szWaterScrPath, DEF_PATH, szPath, 4095, szIniFile); lSpeed = GetPrivateProfileInt(szAppName, szWaterScrSpeed, DEF_UPDATE_SPEED, szIniFile); ::SetCurrentDirectory(szPath); fnlList.FromPath(szPath, "*.jpg"); fnlList.FromPath(szPath, "*.jpe"); fnlList.FromPath(szPath, "*.jpeg"); fnlList.FromPath(szPath, "*.jfif"); fnlList.FromPath(szPath, "*.png"); fnlList.FromPath(szPath, "*.bmp"); fnlList.Rand(); #ifdef DEBUG char ts[1024]; sprintf