dialog_radio.c

uc/os下的gui,友好的交互界面可以使你的产品更有吸引力

/*********************************************************************
*                SEGGER MICROCONTROLLER SYSTEME GmbH                 *
*        Solutions for real time microcontroller applications        *
*                                                                    *
*                    emWin GSC sample code                           *
*                                                                    *
**********************************************************************

----------------------------------------------------------------------
File        : DIALOG_Radio.c
Purpose     : Example demonstrating the use of a RADIO widget
----------------------------------------------------------------------
*/

#include <stddef.h>
#include "GUI.h"
#include "DIALOG.h"

/*********************************************************************
*
*       static data
*
**********************************************************************
*/

/*********************************************************************
*
*       Dialog resource
*
* This table conatins the info required to create the dialog.
* It has been created manually, but could also be created by a GUI-builder.
*/
static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
  { FRAMEWIN_CreateIndirect, "Radio button sample", 0,        30,  70, 260, 100, FRAMEWIN_CF_MOVEABLE },
  { RADIO_CreateIndirect,     NULL,           GUI_ID_RADIO0,   5,  10,   0,   0,   0,  3 },
  { TEXT_CreateIndirect,     "Suspend",       GUI_ID_TEXT0,   25,  10,  70,  20, TEXT_CF_LEFT },
  { TEXT_CreateIndirect,     "Shut down",     GUI_ID_TEXT1,   25,  30,  70,  20, TEXT_CF_LEFT },
  { TEXT_CreateIndirect,     "Restart after", GUI_ID_TEXT2,   25,  50,  70,  20, TEXT_CF_LEFT },
  { TEXT_CreateIndirect,     "seconds",       GUI_ID_TEXT3,  130,  50,  70,  20, TEXT_CF_LEFT },
  { EDIT_CreateIndirect,     "200",           GUI_ID_EDIT0,   95,  47,  30,  19, 0, 3},
  { BUTTON_CreateIndirect,   "OK",            GUI_ID_OK,     180,  10,  60,  20 },
  { BUTTON_CreateIndirect,   "Cancel",        GUI_ID_CANCEL, 180,  40,  60,  20 }
};

/*********************************************************************
*
*       static code
*
**********************************************************************
*/

/*********************************************************************
*
*       _cbBkWindow
*/
static void _cbBkWindow(WM_MESSAGE* pMsg) {
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_RED);
    GUI_Clear();
    GUI_SetColor(GUI_WHITE);
    GUI_SetFont(&GUI_Font24_ASCII);
    GUI_DispStringHCenterAt("DIALOG_Radio - Sample", 160, 5);
    break;
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbCallback
*/
static void _cbCallback(WM_MESSAGE * pMsg) {
  int Sel, NCode, Id;
  WM_HWIN hDlg, hItem;
  GUI_PID_STATE * pState;
  hDlg = pMsg->hWin;
  switch (pMsg->MsgId) {
    case WM_INIT_DIALOG:
      hItem = WM_GetDialogItem(hDlg, GUI_ID_EDIT0);
      EDIT_SetDecMode(hItem, 30,   0, 999, 0, 0);    /* Select decimal mode */
      WM_DisableWindow(hItem);
      break;
    case WM_KEY:
      switch (((WM_KEY_INFO*)(pMsg->Data.p))->Key) {
        case GUI_KEY_ESCAPE:
          GUI_EndDialog(hDlg, 1);
          break;
        case GUI_KEY_ENTER:
          GUI_EndDialog(hDlg, 0);
          break;
      }
      break;
    case WM_TOUCH_CHILD:
      Id = WM_GetId(pMsg->hWinSrc);      /* Id of widget */
      switch (Id) {
        case GUI_ID_TEXT0:
        case GUI_ID_TEXT1:
        case GUI_ID_TEXT2:
          pState = (GUI_PID_STATE *)((WM_MESSAGE *)pMsg->Data.p)->Data.p;
          if (pState) {
            if (pState->Pressed) {
              WM_HWIN hRadio = WM_GetDialogItem(hDlg, GUI_ID_RADIO0);
              RADIO_SetValue(hRadio, Id - GUI_ID_TEXT0);    /* Use the text beside the radio button to 
                                                               set the value of the radio button */
            }
          }
          break;
      }
      break;
    case WM_NOTIFY_PARENT:
      Id    = WM_GetId(pMsg->hWinSrc);      /* Id of widget */
      NCode = pMsg->Data.v;                 /* Notification code */
      switch (NCode) {
        case WM_NOTIFICATION_RELEASED:      /* React only if released */
          switch (Id) {
            case GUI_ID_OK:
              GUI_EndDialog(hDlg, 0);
              break;
            case GUI_ID_CANCEL:
              GUI_EndDialog(hDlg, 1);
              break;
          }
          break;
        case WM_NOTIFICATION_VALUE_CHANGED:
          hItem = WM_GetDialogItem(hDlg, GUI_ID_RADIO0);
          Sel   = RADIO_GetValue(hItem);
          hItem = WM_GetDialogItem(hDlg, GUI_ID_EDIT0);
          WM_SetEnableState(hItem, Sel == 2);      
          break;
      }
      break;
    default:
      WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       MainTask
*
*       Demonstrates a dialog box
*
**********************************************************************
*/

void MainTask(void) {
  GUI_Init();
  WM_SetCallback(WM_HBKWIN, &_cbBkWindow);
  WM_SetCreateFlags(WM_CF_MEMDEV);  /* Use memory devices on all windows to avoid flicker */
  while (1) {
    GUI_ExecDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), &_cbCallback, 0, 0, 0);
    GUI_Delay(1000);
  }
}