[ucgui] 对话框5——鼠标位置和移动窗口

 

 

>_<" 这节主要是获取鼠标的位置和把窗口设置为可以移动。其中设置窗口可以移动用FRAMEWIN_SetMoveable(hFrameWin, 1)就行了。而获得鼠标位置则是利用WM_TOUCH消息的state结构体所传送过来的位置信息（见56、57两行）

  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 }