menu.c

成功移植到s3c44b0开发板上的ucos-ii和lwip

  return r;
}

/*********************************************************************
*
*       _GetItemPos
*/
static void _GetItemPos(MENU_Handle hObj, MENU_Obj* pObj, unsigned Index, int* px, int* py) {
  int i, EffectSize;
  EffectSize = _GetEffectSize(hObj, pObj);
  if (pObj->Flags & MENU_SF_VERTICAL) {
    int yPos = 0;
    for (i = 0; i < (int)Index; i++) {
      yPos += _GetItemHeight(hObj, pObj, i);
    }
    *px = EffectSize;
    *py = EffectSize + yPos;
  } else {
    int xPos = 0;
    for (i = 0; i < (int)Index; i++) {
      xPos += _GetItemWidth(hObj, pObj, i);
    }
    *px = EffectSize + xPos;
    *py = EffectSize;
  }
}

/*********************************************************************
*
*       _SetCapture
*/
static void _SetCapture(MENU_Handle hObj, const MENU_Obj* pObj) {
  if (pObj->IsSubmenuActive == 0) {
    if (WM_HasCaptured(hObj) == 0) {
      WM_SetCapture(hObj, 0);
    }
  }
}

/*********************************************************************
*
*       _ReleaseCapture
*/
static void _ReleaseCapture(MENU_Handle hObj, const MENU_Obj* pObj) {
  if (WM_HasCaptured(hObj)) {
    if (_IsTopLevelMenu(hObj, pObj) && !(pObj->Flags & MENU_SF_POPUP)) {
      WM_ReleaseCapture();
    }
  }
}

/*********************************************************************
*
*       _CloseSubmenu
*/
static void _CloseSubmenu(MENU_Handle hObj, MENU_Obj* pObj) {
  if (pObj->Flags & MENU_SF_ACTIVE) {
    if (pObj->IsSubmenuActive) {
      MENU_ITEM* pItem = (MENU_ITEM*)GUI_ARRAY_GetpItem(&pObj->ItemArray, pObj->Sel);
      /* Inform submenu about its deactivation and detach it */
      MENU__SendMenuMessage(hObj, pItem->hSubmenu, MENU_ON_CLOSE, 0);
      WM_DetachWindow(pItem->hSubmenu);
      pObj->IsSubmenuActive = 0;
      /*
       * Keep capture in menu widget. The capture may only released
       * by clicking outside the menu or when mouse moved out.
       * And it may only released from a top level menu.
       */
      _SetCapture(hObj, pObj);
      /* Invalidate menu item. This is needed because the appearance may have changed */
      MENU__InvalidateItem(hObj, pObj, pObj->Sel);
    }
  }
}

/*********************************************************************
*
*       _OpenSubmenu
*/
static void _OpenSubmenu(MENU_Handle hObj, MENU_Obj* pObj, unsigned Index) {
  if (pObj->Flags & MENU_SF_ACTIVE) {
    MENU_ITEM* pItem;
    char PrevActiveSubmenu;
    PrevActiveSubmenu = pObj->IsSubmenuActive;
    /* Close previous submenu (if needed) */
    _CloseSubmenu(hObj, pObj);
    pItem = (MENU_ITEM*)GUI_ARRAY_GetpItem(&pObj->ItemArray, Index);
    if (pItem->hSubmenu) {
      if ((pItem->Flags & MENU_IF_DISABLED) == 0) {
        int x, y, EffectSize;
        /* Calculate position of submenu */
        EffectSize = _GetEffectSize(hObj, pObj);
        _GetItemPos(hObj, pObj, Index, &x, &y);
        if (pObj->Flags & MENU_SF_VERTICAL) {
          x += _CalcMenuSizeX(hObj, pObj) - (_GetEffectSize(hObj, pObj) << 1);
          y -= EffectSize;
        } else {
          y += _CalcMenuSizeY(hObj, pObj) - (_GetEffectSize(hObj, pObj) << 1);
          x -= EffectSize;
        }
        x += WM_GetWindowOrgX(hObj);
        y += WM_GetWindowOrgY(hObj);
        /*
         * Notify owner window when for the first time open a menu (when no
         * other submenu was open), so it can initialize the menu items.
         */
        if (PrevActiveSubmenu == 0) {
          if (_IsTopLevelMenu(hObj, pObj)) {
            MENU__SendMenuMessage(hObj, pObj->hOwner, MENU_ON_INITMENU, 0);
          }
        }
        /* Notify owner window when a submenu opens, so it can initialize the menu items. */
        MENU__SendMenuMessage(hObj, pObj->hOwner, MENU_ON_INITSUBMENU, pItem->Id);
        /* Set active menu as owner of submenu. */
        MENU_SetOwner(pItem->hSubmenu, hObj);
        /* Attach submenu and inform it about its activation. */
        WM_AttachWindowAt(pItem->hSubmenu, WM_HBKWIN, x, y);
        MENU__SendMenuMessage(hObj, pItem->hSubmenu, MENU_ON_OPEN, 0);
        pObj->IsSubmenuActive = 1;
        /* Invalidate menu item. This is needed because the appearance may have changed. */
        MENU__InvalidateItem(hObj, pObj, Index);
      }
    }
  }
}

/*********************************************************************
*
*       _ClosePopup
*/
static void _ClosePopup(MENU_Handle hObj, MENU_Obj* pObj) {
  if (pObj->Flags & MENU_SF_POPUP) {
    pObj->Flags &= ~(MENU_SF_POPUP);
    WM_DetachWindow(hObj);
    WM_ReleaseCapture();
  }
}

/*********************************************************************
*
*       _SetSelection
*/
static void _SetSelection(MENU_Handle hObj, MENU_Obj* pObj, int Index) {
  if (Index != pObj->Sel) {
    MENU__InvalidateItem(hObj, pObj, pObj->Sel); /* Invalidate previous selection */
    MENU__InvalidateItem(hObj, pObj, Index);     /* Invalidate new selection */
    pObj->Sel = Index;
  }
}

/*********************************************************************
*
*       _SelectItem
*/
static void _SelectItem(MENU_Handle hObj, MENU_Obj* pObj, unsigned Index) {
  if (pObj->Sel != (int)Index) {
    _SetCapture(hObj, pObj);
    _OpenSubmenu(hObj, pObj, Index);
    _SetSelection(hObj, pObj, Index);
  }
}

/*********************************************************************
*
*       _DeselectItem
*/
static void _DeselectItem(MENU_Handle hObj, MENU_Obj* pObj) {
  if (pObj->IsSubmenuActive == 0) {
    _SetSelection(hObj, pObj, -1);
    _ReleaseCapture(hObj, pObj);
  }
}

/*********************************************************************
*
*       _ActivateItem
*/
static void _ActivateItem(MENU_Handle hObj, MENU_Obj* pObj, unsigned Index) {
  MENU_ITEM* pItem;
  pItem = (MENU_ITEM*)GUI_ARRAY_GetpItem(&pObj->ItemArray, Index);
  if (pItem->hSubmenu == 0) {
    if ((pItem->Flags & (MENU_IF_DISABLED | MENU_IF_SEPARATOR)) == 0) {
      _ClosePopup(hObj, pObj);
      /* Send item select message to owner. */
      MENU__SendMenuMessage(hObj, pObj->hOwner, MENU_ON_ITEMSELECT, pItem->Id);
    }
  }
}

/*********************************************************************
*
*       _ActivateMenu
*/
static void _ActivateMenu(MENU_Handle hObj, MENU_Obj* pObj, unsigned Index) {
  if ((pObj->Flags & MENU_SF_OPEN_ON_POINTEROVER) == 0) {
    MENU_ITEM* pItem;
    pItem = (MENU_ITEM*)GUI_ARRAY_GetpItem(&pObj->ItemArray, Index);
    if (pItem->hSubmenu) {
      if ((pItem->Flags & MENU_IF_DISABLED) == 0) {
        if ((pObj->Flags & MENU_SF_ACTIVE) == 0) {
          pObj->Flags |= MENU_SF_ACTIVE;
          _OpenSubmenu(hObj, pObj, Index);
          _SetSelection(hObj, pObj, Index);
        } else if (pObj->Flags & MENU_SF_CLOSE_ON_SECOND_CLICK) {
          if ((int)Index == pObj->Sel) {
            _CloseSubmenu(hObj, pObj);
            pObj->Flags &= ~MENU_SF_ACTIVE;
          }
        }
      }
    }
  }
}

/*********************************************************************
*
*       _DeactivateMenu
*/
static void _DeactivateMenu(MENU_Handle hObj, MENU_Obj* pObj) {
  _CloseSubmenu(hObj, pObj);
  if ((pObj->Flags & MENU_SF_OPEN_ON_POINTEROVER) == 0) {
    pObj->Flags &= ~MENU_SF_ACTIVE;
  }
}

/*******************************************************************
*
*       _ForwardMouseOverMsg
*/
static int _ForwardMouseOverMsg(MENU_Handle hObj, MENU_Obj* pObj, int x, int y) {
#if (GUI_SUPPORT_MOUSE)
  if ((pObj->IsSubmenuActive == 0) && !(pObj->Flags & MENU_SF_POPUP)) {
    if (_IsTopLevelMenu(hObj, pObj)) {
      WM_HWIN hBelow;
      x += WM_GetWindowOrgX(hObj);
      y += WM_GetWindowOrgY(hObj);
      hBelow = WM_Screen2hWin(x, y);
      if (hBelow && (hBelow != hObj)) {
        WM_MESSAGE Msg;
        GUI_PID_STATE State;
        x -= WM_GetWindowOrgX(hBelow);
        y -= WM_GetWindowOrgY(hBelow);
        State.Pressed = 0;
        State.x = x;
        State.y = y;
        Msg.Data.p = &State;
        Msg.MsgId = WM_MOUSEOVER;
        WM__SendMessage(hBelow, &Msg);
        return 1;
      }
    }
  }
#endif
  return 0;
}

/*********************************************************************
*
*       _HandlePID
*
* Return values:
*   1 = We need to forward PID message to owner.
*   0 = We do not need to inform owner.
*/
static char _HandlePID(MENU_Handle hObj, MENU_Obj* pObj, int x, int y, int Pressed) {
  GUI_PID_STATE PrevState;
  char XYInWidget = 0;
  WM_PID__GetPrevState(&PrevState);
  /*
   * Check if coordinates are inside the widget.
   */
  if ((x >= 0) && (y >= 0)) {
    GUI_RECT r;
    WM__GetClientRectWin(&pObj->Widget.Win, &r);
    if ((x <= r.x1) && (y <= r.y1)) {
      XYInWidget = 1;
    }
  }

  if (XYInWidget) {
    int ItemIndex;
    ItemIndex = _GetItemFromPos(hObj, pObj, x, y);
    /* 
     * Handle PID when coordinates are inside the widget.
     */
    if (ItemIndex >= 0) {
      /* 
       * Coordinates are inside the menu.
       */
      if (Pressed == 1) {
        if (PrevState.Pressed == 0) {  /* Clicked */
          _ActivateMenu(hObj, pObj, ItemIndex);
        }
        _SelectItem(hObj, pObj, ItemIndex);
      } else if ((Pressed == 0) && (PrevState.Pressed == 1)) {  /* Released */
        _ActivateItem(hObj, pObj, ItemIndex);
      } else if (Pressed < 0) {  /* Mouse moved */
        if (_ForwardMouseOverMsg(hObj, pObj, x, y) == 0) {
          _SelectItem(hObj, pObj, ItemIndex);
        } else {
          _DeselectItem(hObj, pObj);
        }
      }
    } else {
      /* 
       * Coordinates are outside the menu but inside the widget.
       */
      if (Pressed == 1) {
        if (PrevState.Pressed == 0) {  /* Clicked */
          /* 
           * User has clicked outside the menu. Close the active submenu.
           * The widget itself must be closed (if needed) by the owner.
           */
          _DeactivateMenu(hObj, pObj);
        }
        _DeselectItem(hObj, pObj);
      } else if (Pressed < 0) {  /* Moved out or mouse moved */
        _DeselectItem(hObj, pObj);
      }
    }
    return 0;
  } else {
    /* 
     * Handle PID when coordinates are outside the widget.
     */
    if ((Pressed == 1) && (PrevState.Pressed == 0)) {
      /* 
       * User has clicked outside the menu. Close the active submenu.
       * The widget itself must be closed (if needed) by the owner.
       */
      _DeactivateMenu(hObj, pObj);
      _ClosePopup(hObj, pObj);
    }
    _DeselectItem(hObj, pObj);
    _ForwardMouseOverMsg(hObj, pObj, x, y);
  }
  return 1;   /* Coordinates are not in widget, we need to forward PID message to owner */
}

/*********************************************************************
*
*       _ForwardPIDMsgToOwner
*/
static void _ForwardPIDMsgToOwner(MENU_Handle hObj, MENU_Obj* pObj, WM_MESSAGE* pMsg) {
  if (_IsTopLevelMenu(hObj, pObj) == 0) {
    WM_HWIN hOwner;
    hOwner = pObj->hOwner ? pObj->hOwner : WM_GetParent(hObj);
    if (hOwner) {
      if (pMsg->Data.p) {
        GUI_PID_STATE* pState;
        pState = (GUI_PID_STATE*)pMsg->Data.p;
        pState->x += WM_GetWindowOrgX(hObj) - WM_GetWindowOrgX(hOwner);
        pState->y += WM_GetWindowOrgY(hObj) - WM_GetWindowOrgY(hOwner);
      }
      WM__SendMessage(hOwner, pMsg);
    }
  }
}

/*********************************************************************
*
*       Static routines, callback
*
**********************************************************************
*/
/*********************************************************************
*
*       _OnMenu
*/
static void _OnMenu(MENU_Handle hObj, MENU_Obj* pObj, WM_MESSAGE* pMsg) {
  const MENU_MSG_DATA* pData = (const MENU_MSG_DATA*)pMsg->Data.p;
  if (pData) {
    switch (pData->MsgType) {
    case MENU_ON_ITEMSELECT:
      _DeactivateMenu(hObj, pObj);
      _DeselectItem(hObj, pObj);
      _ClosePopup(hObj, pObj);
      /* No break here. We need to forward message to owner. */
    case MENU_ON_INITMENU:
    case MENU_ON_INITSUBMENU:
      /* Forward message to owner. */
      {
        WM_HWIN hOwner;
        hOwner = pObj->hOwner ? pObj->hOwner : WM_GetParent(hObj);
        if (hOwner) {
          pMsg->hWinSrc = hObj;
          WM__SendMessage(hOwner, pMsg);
        }
      }
      break;
    case MENU_ON_OPEN:
      pObj->Sel = -1;
      pObj->IsSubmenuActive = 0;
      pObj->Flags |= MENU_SF_ACTIVE | MENU_SF_OPEN_ON_POINTEROVER;