1 #define FACTOR   5  2 #define EYE_X1  18  3 #define EYE_X2  54  4 #define EYE_Y   26  5 #define EYE_RX  16  6 #define EYE_RY  24  7 #define MIN_VISIBILITY 50          /* Make sure at least this many pixels stay visible when moved */  8   9 static int _Min(int a, int b) { 10   return (a < b) ? a : b; 11 } 12 //画眼睛的函数 13 static void _DrawEye(int x0, int y0, int rx, int ry, int x1, int y1) { 14   int dx, dy, x, y; 15   float Hyp; 16   GUI_SetColor(GUI_WHITE); 17   GUI_FillEllipse(x0, y0, rx, ry); 18   GUI_SetColor(GUI_BLACK); 19   GUI_DrawEllipse(x0, y0, rx, ry); 20   /* Calculate the coordinates */ 21   dx  = x1 - x0 + 1; 22   dy  = y1 - y0 + 1; 23   Hyp = sqrt(dx * dx + dy * dy); 24   x   = (dx * _Min(rx - 5, abs(dx)) * FACTOR / Hyp) + x0 * FACTOR; 25   y   = (dy * _Min(ry - 5, abs(dy)) * FACTOR / Hyp) + y0 * FACTOR; 26   /* Draw the pupil */ 27   GUI_AA_SetFactor(FACTOR); 28   GUI_AA_EnableHiRes(); 29   GUI_SetColor(0xD00000); 30   GUI_AA_FillCircle(x, y, 5.75 * FACTOR); 31   GUI_SetColor(GUI_BLACK); 32   GUI_AA_FillCircle(x, y, 3.75 * FACTOR); 33   GUI_SetColor(GUI_GRAY); 34   GUI_AA_FillCircle(x - 1.25 * FACTOR, y - 1.25 * FACTOR, 1.25 * FACTOR); 35   GUI_AA_DisableHiRes(); 36 } 37 //窗口消息回调函数 38 static void _cbTransWindow(WM_MESSAGE* pMsg) { 39   WM_HWIN hWin = pMsg->hWin; 40   GUI_PID_STATE State; 41   GUI_PID_GetState(&State); 42   switch (pMsg->MsgId) { 43   case WM_PAINT: 44     State.x -= WM_GetWindowOrgX(hWin);//分别返回指定窗口的原点在桌面坐标中的X或Y位置 45     State.y -= WM_GetWindowOrgY(hWin); 46     _DrawEye(EYE_X1, EYE_Y, EYE_RX, EYE_RY, State.x, State.y); 47     _DrawEye(EYE_X2, EYE_Y, EYE_RX, EYE_RY, State.x, State.y); 48     break; 49   case WM_TOUCH: 50     if (pMsg->Data.p) { 51       GUI_PID_STATE* pState = (GUI_PID_STATE*)pMsg->Data.p; 52       if (pState->Pressed) { 53         int mx, my, x; 54         I32 Sum, SumY; 55         I32 OutConst = EYE_RX * EYE_RX * EYE_RY * EYE_RY + (EYE_RX * EYE_RX * EYE_RY >> 1); 56         mx = pState->x; 57         my = (pState->y < EYE_Y) ? (EYE_Y - pState->y) : (pState->y - EYE_Y); 58         if (my >= 0 && my <= EYE_RY) { 59           int y; 60           x = EYE_RX; 61           for (y = 0; y <= my; y++) { 62             SumY =((I32)(EYE_RX * EYE_RX)) * ((I32)(y * y)); 63             while (Sum = SumY + ((I32)(EYE_RY * EYE_RY)) * ((I32)(x * x)), (x > 0) && (Sum > OutConst)) { 64               x--; 65             } 66           } 67         } else { 68           x = -EYE_RX; 69         } 70         if (((mx >= EYE_X1 - x) && (mx <= EYE_X1 + x)) ||  71             ((mx >= EYE_X2 - x) && (mx <= EYE_X2 + x)) || WM_HasCaptured(hWin)) 72         { 73           WM_SetCaptureMove(hWin, pState, MIN_VISIBILITY); 74         } else { 75           /* Transfer the message to the underlying window, since the transparent area has been clicked. */ 76           WM_HWIN hBelow = WM_Screen2hWinEx(hWin, State.x, State.y); 77           if (hBelow) { 78             pState->x = State.x - WM_GetWindowOrgX(hBelow); 79             pState->y = State.y - WM_GetWindowOrgY(hBelow); 80             WM_SendMessage(hBelow, pMsg); 81           } 82         } 83       } 84     } 85     break; 86   default: 87     WM_DefaultProc(pMsg); 88   } 89 } 90 //界面创建函数 91 static void _DemoTransWindow(void) { 92   WM_HWIN hTransWin, hFrameWin; 93   WM_SetCreateFlags(WM_CF_MEMDEV); 94   WM_EnableMemdev(WM_HBKWIN); 95   WM_SetDesktopColor(GUI_RED); 96   hTransWin = WM_CreateWindow(10,  10, 72, 52, WM_CF_SHOW | WM_CF_HASTRANS | WM_CF_STAYONTOP, 97                               &_cbTransWindow, 0); 98   hFrameWin = FRAMEWIN_Create("Framewin", 0, WM_CF_SHOW, 100, 70, 120, 100);    //创建一个FRAMEWIN小工具。（弃用） 99   FRAMEWIN_SetActive(hFrameWin, 1);                                                //设置框架窗口的状态。（弃用）                                            100   FRAMEWIN_SetMoveable(hFrameWin, 1);                                            //窗口可移动函数101   GUI_CURSOR_Show();102   while (1) {103     WM_InvalidateWindow(hTransWin);                                                //使窗口无效。104     GUI_Delay(20);105   }106 }107 //主函数108 void MainTask_eye(void) {109   GUI_Init();110   _DemoTransWindow();111 }