menu.c

ucgui的3.98版本的源代码

  }
}

/*********************************************************************
*
*       _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) {
    pObj->Sel = Index;
    MENU__InvalidateItem(hObj, pObj, pObj->Sel); /* Invalidate previous selection */
    MENU__InvalidateItem(hObj, pObj, Index);     /* Invalidate new selection */
  }
}

/*********************************************************************
*
*       _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
*/
#if (GUI_SUPPORT_MOUSE)
static int _ForwardMouseOverMsg(MENU_Handle hObj, MENU_Obj* pObj, int x, int y) {
  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__IsInModalArea(hBelow)) {
        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;
      }
    }
  }
  return 0;
}
#endif

/*********************************************************************
*
*       _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 > 0) {
        if ((PrevState.Pressed == 0) && (Pressed == 1)) {  /* 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 (GUI_SUPPORT_MOUSE)
          if (_ForwardMouseOverMsg(hObj, pObj, x, y) != 0) {
            _DeselectItem(hObj, pObj);
          } else
        #endif
        {
          _SelectItem(hObj, pObj, ItemIndex);
        }
      }
    } else {
      /* 
       * Coordinates are outside the menu but inside the widget.
       */
      if (Pressed > 0) {
        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 */
        if (!(pObj->Widget.State & WIDGET_STATE_FOCUS)) {
          _DeselectItem(hObj, pObj);
        }
      }
    }
    return 0;
  } else {
    /* 
     * Handle PID when coordinates are outside the widget.
     */
    if ((Pressed > 0) && (PrevState.Pressed == 0)) {
      /* 
       * User has clicked outside the menu. Close the active submenu.
       * The widget itself must be closed (if needed) by the owner.
       */
      _DeselectItem(hObj, pObj);
      _DeactivateMenu(hObj, pObj);
      _ClosePopup(hObj, pObj);
      _SetSelection(hObj, pObj, -1);
      if (pObj->Widget.State & WIDGET_STATE_FOCUS) {
        MENU_Handle hObjTopLevel; 
        MENU_Obj *  pObjTopLevel;
        _GetTopLevelMenu(hObj, pObj, &hObjTopLevel, &pObjTopLevel, 0);
        WM_SetFocus(hObjTopLevel);
        _SetSelection(hObjTopLevel, pObjTopLevel, -1);
        _ReleaseCapture(hObjTopLevel, pObjTopLevel);
      }
    }
    if (!(pObj->Widget.State & WIDGET_STATE_FOCUS)) {
      _DeselectItem(hObj, pObj);
    }
    #if (GUI_SUPPORT_MOUSE)
      _ForwardMouseOverMsg(hObj, pObj, x, y);
    #endif
  }
  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;
      _SetCapture(hObj, pObj);
      MENU__ResizeMenu(hObj, pObj);
      break;
    case MENU_ON_CLOSE:
      _CloseSubmenu(hObj, pObj);
      break;
    case MENU_IS_MENU:
      pMsg->Data.v = 1;
      break;
    }
  }
}

/*********************************************************************
*
*       _OnTouch
*/
static char _OnTouch(MENU_Handle hObj, MENU_Obj* pObj, WM_MESSAGE* pMsg) {
  const GUI_PID_STATE* pState = (const GUI_PID_STATE*)pMsg->Data.p;
  if (pState) {  /* Something happened in our area (pressed or released) */
    return _HandlePID(hObj, pObj, pState->x, pState->y, pState->Pressed);
  }
  return _HandlePID(hObj, pObj, -1, -1, -1); /* Moved out */
}

/*********************************************************************
*
*       _OnMouseOver
*/
#if (GUI_SUPPORT_MOUSE)
static char _OnMouseOver(MENU_Handle hObj, MENU_Obj* pObj, WM_MESSAGE* pMsg) {
  const GUI_PID_STATE* pState = (const GUI_PID_STATE *)pMsg->Data.p;
  if (pState) {
    return _HandlePID(hObj, pObj, pState->x, pState->y, -1);
  }
  return 0;
}
#endif

/*********************************************************************
*
*       _SetPaintColors
*/
static void _SetPaintColors(const MENU_Obj* pObj, const MENU_ITEM* pItem, int ItemIndex) {
  char Selected;
  unsigned ColorIndex;
  Selected = (ItemIndex == pObj->Sel) ? 1 : 0;
  if (pObj->IsSubmenuActive && Selected) {
    ColorIndex = MENU_CI_ACTIVE_SUBMENU;
  } else if (pItem->Flags & MENU_IF_SEPARATOR) {
    ColorIndex = MENU_CI_ENABLED;
  } else {
    ColorIndex = (Selected) ? MENU_CI_SELECTED : MENU_CI_ENABLED;
    if (pItem->Flags & MENU_IF_DISABLED) {
      if (pObj->Flags & MENU_CF_HIDE_DISABLED_SEL) {
        ColorIndex = MENU_CI_DISABLED;
      } else {
        ColorIndex += MENU_CI_DISABLED;
      }
    }
  }
  GUI_SetBkColor(pObj->Props.aBkColor[ColorIndex]);
  GUI_SetColor(pObj->Props.aTextColor[ColorIndex]);
}

/*********************************************************************
*
*       _OnPaint
*/
static void _OnPaint(MENU_Handle hObj, MENU_Obj* pObj) {
  GUI_RECT FillRect, TextRect;
  MENU_ITEM* pItem;
  unsigned TextWidth, NumItems, i;
  U8 BorderLeft   = pObj->Props.aBorder[MENU_BI_LEFT];
  U8 BorderTop    = pObj->Props.aBorder[MENU_BI_TOP];
  int FontHeight  = GUI_GetYDistOfFont(pObj->Props.pFont);
  int EffectSize  = _GetEffectSize(hObj, pObj);
  NumItems = MENU__GetNumItems(pObj);
  WM__GetClientRectWin(&pObj->Widget.Win, &FillRect);
  GUI__ReduceRect(&FillRect, &FillRect, EffectSize);
  GUI_SetFont(pObj->Props.pFont);
  if (pObj->Flags & MENU_SF_VERTICAL) {
    int ItemHeight, xSize;
    xSize = _CalcMenuSizeX(hObj, pObj);
    FillRect.x1 = xSize - EffectSize - 1;
    TextRect.x0 = FillRect.x0 + BorderLeft;
    for (i = 0; i < NumItems; i++) {
      pItem = (MENU_ITEM*)GUI_ARRAY_GetpItem(&pObj->ItemArray, i);
      ItemHeight = _GetItemHeight(hObj, pObj, i);
      _SetPaintColors(pObj, pItem, i);
      FillRect.y1 = FillRect.y0 + ItemHeight - 1;
      if (pItem->Flags & MENU_IF_SEPARATOR) {
        GUI_ClearRectEx(&FillRect);
        GUI_SetColor(0x7C7C7C);
        GUI_DrawHLine(FillRect.y0 + BorderTop + 1, FillRect.x0 + 2, FillRect.x1 - 2);
      } else {
        TextWidth = pItem->TextWidth;
        TextRect.x1 = TextRect.x0 + TextWidth - 1;
        TextRect.y0 = FillRect.y0 + BorderTop;
        TextRect.y1 = TextRect.y0 + FontHeight - 1;
        WIDGET__FillStringInRect(pItem->acText, &FillRect, &TextRect, &TextRect);
      }
      FillRect.y0 += ItemHeight;
    }
  } else {
    int ItemWidth, ySize;
    ySize = _CalcMenuSizeY(hObj, pObj);
    FillRect.y1 = ySize - EffectSize - 1;
    TextRect.y0 = FillRect.y0 + BorderTop;
    TextRect.y1 = TextRect.y0 + FontHeight - 1;
    for (i = 0; i < NumItems; i++) {
      pItem = (MENU_ITEM*)GUI_ARRAY_GetpItem(&pObj->ItemArray, i);
      ItemWidth = _GetItemWidth(hObj, pObj, i);
      _SetPaintColors(pObj, pItem, i);
      FillRect.x1 = FillRect.x0 + ItemWidth - 1;
      if (pItem->Flags & MENU_IF_SEPARATOR) {
        GUI_ClearRectEx(&FillRect);
        GUI_SetColor(0x7C7C7C);
        GUI_DrawVLine(FillRect.x0 + BorderLeft + 1, FillRect.y0 + 2, FillRect.y1 - 2);
      } else {
        TextWidth = pItem->TextWidth;
        TextRect.x0 = FillRect.x0 + BorderLeft;
        TextRect.x1 = TextRect.x0 + TextWidth - 1;
        WIDGET__FillStringInRect(pItem->acText, &FillRect, &TextRect, &TextRect);
      }
      FillRect.x0 += ItemWidth;
    }
  }
  if (pObj->Width || pObj->Height) {