# [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
109   GUI_Init();
110   _DemoTransWindow();
111 }

posted @ 2014-08-24 20:54  beautifulzzzz  阅读(1332)  评论(0编辑  收藏  举报