libtest/rolex.c

   1 /*********************************************************************
   2  *                                                                   *
   3  *  rolex.c: Windows clock application for WINE (by Jim Peterson)    *
   4  *                                                                   *
   5  *  This is a translation of a Turbo Pascal OWL application I made   *
   6  *  once, so it's a little flaky (tons of globals, functions that    *
   7  *  could have been in-lined, etc.).  The source code should easily  *
   8  *  compile with a standard Win32 C compiler.                        *
   9  *                                                                   *
  10  *  To try it out, type 'make rolex'.                                *
  11  *                                                                   *
  12  *********************************************************************/
  13
  14 #include <math.h>
  15 #include <string.h>
  16 #include "windows.h"
  17
  18 char AppName[] = "Rolex";
  19 char WindowName[] = "Rolex";
  20 int WindowWidth = 100;
  21 int WindowHeight = 121;
  22 COLORREF FaceColor = RGB(192,192,192);
  23 COLORREF HandColor = RGB(0,0,0);
  24 COLORREF EtchColor = RGB(0,0,0);
  25
  26 float Pi=3.1415926;
  27
  28 typedef struct
  29 {
  30   int StartX,StartY,EndX,EndY;
  31 } HandData;
  32
  33 int MaxX,MaxY;
  34 HandData OldSecond,OldHour,OldMinute;
  35
  36 HWND HWindow;
  37
  38 void DrawFace(HDC dc)
  39 {
  40   int MidX, MidY, t;
  41
  42   MidX=MaxX/2;
  43   MidY=MaxY/2;
  44   SelectObject(dc,CreateSolidBrush(FaceColor));
  45   SelectObject(dc,CreatePen(PS_SOLID,1,EtchColor));
  46   Ellipse(dc,0,0,MaxX,MaxY);
  47
  48   for(t=0; t<12; t++)
  49   {
  50     MoveToEx(dc,MidX+sin(t*Pi/6)*0.9*MidX,MidY-cos(t*Pi/6)*0.9*MidY,NULL);
  51     LineTo(dc,MidX+sin(t*Pi/6)*0.8*MidX,MidY-cos(t*Pi/6)*0.8*MidY);
  52   }
  53   if(MaxX>64 && MaxY>64)
  54     for(t=0; t<60; t++)
  55       SetPixel(dc,MidX+sin(t*Pi/30)*0.9*MidX,MidY-cos(t*Pi/30)*0.9*MidY
  56                ,EtchColor);
  57   DeleteObject(SelectObject(dc,GetStockObject(NULL_BRUSH)));
  58   DeleteObject(SelectObject(dc,GetStockObject(NULL_PEN)));
  59   memset(&OldSecond,0,sizeof(OldSecond));
  60   memset(&OldMinute,0,sizeof(OldMinute));
  61   memset(&OldHour,0,sizeof(OldHour));
  62 }
  63
  64 void DrawHourHand(HDC dc)
  65 {
  66   MoveToEx(dc, OldHour.StartX, OldHour.StartY, NULL);
  67   LineTo(dc, OldHour.EndX, OldHour.EndY);
  68 }
  69
  70 void DrawMinuteHand(HDC dc)
  71 {
  72   MoveToEx(dc, OldMinute.StartX, OldMinute.StartY, NULL);
  73   LineTo(dc, OldMinute.EndX, OldMinute.EndY);
  74 }
  75
  76 void DrawSecondHand(HDC dc)
  77 {
  78   MoveToEx(dc, OldSecond.StartX, OldSecond.StartY, NULL);
  79   LineTo(dc, OldSecond.EndX, OldSecond.EndY);
  80 }
  81
  82 BOOL UpdateHourHand(HDC dc,int MidX,int MidY,int XExt,int YExt,WORD Pos)
  83 {
  84   int Sx, Sy, Ex, Ey;
  85   BOOL rv;
  86
  87   rv = FALSE;
  88   Sx = MidX; Sy = MidY;
  89   Ex = MidX+sin(Pos*Pi/6000)*XExt;
  90   Ey = MidY-cos(Pos*Pi/6000)*YExt;
  91   rv = ( Sx!=OldHour.StartX || Ex!=OldHour.EndX ||
  92          Sy!=OldHour.StartY || Ey!=OldHour.EndY );
  93   if(rv)DrawHourHand(dc);
  94   OldHour.StartX = Sx; OldHour.EndX = Ex;
  95   OldHour.StartY = Sy; OldHour.EndY = Ey;
  96   return rv;
  97 }
  98
  99 BOOL UpdateMinuteHand(HDC dc,int MidX,int MidY,int XExt,int YExt,WORD Pos)
 100 {
 101   int Sx, Sy, Ex, Ey;
 102   BOOL rv;
 103
 104   rv = FALSE;
 105   Sx = MidX; Sy = MidY;
 106   Ex = MidX+sin(Pos*Pi/30000)*XExt;
 107   Ey = MidY-cos(Pos*Pi/30000)*YExt;
 108   rv = ( Sx!=OldMinute.StartX || Ex!=OldMinute.EndX ||
 109          Sy!=OldMinute.StartY || Ey!=OldMinute.EndY );
 110   if(rv)DrawMinuteHand(dc);
 111   OldMinute.StartX = Sx; OldMinute.EndX = Ex;
 112   OldMinute.StartY = Sy; OldMinute.EndY = Ey;
 113   return rv;
 114 }
 115
 116 BOOL UpdateSecondHand(HDC dc,int MidX,int MidY,int XExt,int YExt,WORD Pos)
 117 {
 118   int Sx, Sy, Ex, Ey;
 119   BOOL rv;
 120
 121   rv = FALSE;
 122   Sx = MidX; Sy = MidY;
 123   Ex = MidX+sin(Pos*Pi/3000)*XExt;
 124   Ey = MidY-cos(Pos*Pi/3000)*YExt;
 125   rv = ( Sx!=OldSecond.StartX || Ex!=OldSecond.EndX ||
 126          Sy!=OldSecond.StartY || Ey!=OldSecond.EndY );
 127   if(rv)DrawSecondHand(dc);
 128   OldSecond.StartX = Sx; OldSecond.EndX = Ex;
 129   OldSecond.StartY = Sy; OldSecond.EndY = Ey;
 130   return rv;
 131 }
 132
 133 void Idle(HDC idc)
 134 {
 135   SYSTEMTIME st;
 136   WORD H, M, S, F;
 137   int MidX, MidY;
 138   HDC dc;
 139   BOOL Redraw;
 140
 141   if(idc)
 142     dc=idc;
 143   else
 144     dc=GetDC(HWindow);
 145   if(!dc)return;
 146
 147   GetLocalTime(&st);
 148   H = st.wHour;
 149   M = st.wMinute;
 150   S = st.wSecond;
 151   F = st.wMilliseconds / 10;
 152   F = F + S*100;
 153   M = M*1000+F/6;
 154   H = H*1000+M/60;
 155   MidX = MaxX/2;
 156   MidY = MaxY/2;
 157   SelectObject(dc,CreatePen(PS_SOLID,1,FaceColor));
 158   Redraw = FALSE;
 159   if(UpdateHourHand(dc,MidX,MidY,MidX*0.5,MidY*0.5,H)) Redraw = TRUE;
 160   if(UpdateMinuteHand(dc,MidX,MidY,MidX*0.65,MidY*0.65,M)) Redraw = TRUE;
 161   if(UpdateSecondHand(dc,MidX,MidY,MidX*0.79,MidY*0.79,F)) Redraw = TRUE;
 162   DeleteObject(SelectObject(dc,CreatePen(PS_SOLID,1,HandColor)));
 163   if(Redraw)
 164   {
 165     DrawSecondHand(dc);
 166     DrawMinuteHand(dc);
 167     DrawHourHand(dc);
 168   }
 169   DeleteObject(SelectObject(dc,GetStockObject(NULL_PEN)));
 170   if(!idc) ReleaseDC(HWindow,dc);
 171 }
 172
 173 LRESULT CALLBACK ProcessAppMsg(HWND wnd,UINT msg,WPARAM w,LPARAM l)
 174 {
 175   PAINTSTRUCT PaintInfo;
 176   HDC dc;
 177
 178   switch(msg)
 179   {
 180   case WM_PAINT:
 181     if(GetUpdateRect(wnd,NULL,FALSE))
 182     {
 183       dc=BeginPaint(wnd,&PaintInfo);
 184       DrawFace(dc);
 185       Idle(dc);
 186       EndPaint(wnd,&PaintInfo);
 187     }
 188     break;
 189
 190   case WM_SIZE:
 191     MaxX = LOWORD(l);
 192     MaxY = HIWORD(l);
 193     break;
 194
 195   case WM_DESTROY:
 196     PostQuitMessage (0);
 197     break;
 198
 199   default:
 200     return DefWindowProc (wnd, msg, w, l);
 201   }
 202   return 0l;
 203 }
 204
 205 WPARAM MessageLoop()
 206 {
 207   MSG msg;
 208
 209   while(1)
 210   {
 211     Sleep(1); /* sleep 1 millisecond */
 212     if(PeekMessage(&msg,0,0,0,PM_REMOVE))
 213     {
 214       if(msg.message == WM_QUIT) return msg.wParam;
 215       TranslateMessage(&msg);
 216       DispatchMessage(&msg);
 217     }
 218     else
 219       Idle(NULL);
 220   }
 221 }
 222
 223 int PASCAL WinMain (HANDLE inst, HANDLE prev, LPSTR cmdline, int show)
 224 {
 225   WNDCLASS class;
 226   if(!prev)
 227   {
 228     class.style = CS_HREDRAW | CS_VREDRAW;
 229     class.lpfnWndProc = ProcessAppMsg;
 230     class.cbClsExtra = 0;
 231     class.cbWndExtra = 0;
 232     class.hInstance  = inst;
 233     class.hIcon      = 0; /* Draw my own icon */
 234     class.hCursor    = LoadCursor (0, IDC_ARROW);
 235     class.hbrBackground = (HBRUSH)(COLOR_BACKGROUND + 1);
 236     class.lpszMenuName = 0;
 237     class.lpszClassName = AppName;
 238   }
 239   if (!RegisterClass (&class)) return -1;
 240
 241   HWindow=CreateWindowEx(WS_EX_TOPMOST,AppName,WindowName,WS_OVERLAPPEDWINDOW,
 242                          CW_USEDEFAULT,CW_USEDEFAULT,WindowWidth,WindowHeight,
 243                          0,0,inst,0);
 244   memset(&OldSecond,0,sizeof(OldSecond));
 245   memset(&OldMinute,0,sizeof(OldMinute));
 246   memset(&OldHour,0,sizeof(OldHour));
 247   MaxX = WindowWidth;
 248   MaxY = WindowHeight;
 249
 250   ShowWindow (HWindow, show);
 251   UpdateWindow (HWindow);
 252
 253   return MessageLoop();
 254 }