mso_choice.c

来自「ZORAN 962/966 SOURCE CODE,DVD chip」· C语言 代码 · 共 511 行 · 第 1/2 页

*
*	Desc 	:	Defaul display function of MSO_LISTITEM objects.
****************************************************************************************/
BOOL ListItemFillOSDSeg(MSO_OBJECT __NEAR* pThis, MS_AREA __NEAR* pAbsArea)
{
	FORMATED_UNICODE_STRING oFormUniStr;
	UINT16 wColor = (MS_IsFocusable(pThis) && (!MS_IS_LISTITEM_DISABLED(pThis))) ? CIDX_CHOICE_LIST_ITEM_FOCUSABLE : CIDX_CHOICE_LIST_ITEM_NOT_FOCUSABLE;

	MSO_LISTITEM __NEAR* pItem = (MSO_LISTITEM __NEAR*)pThis;

	// Display selection icon.
	if(MS_IsSelected(pItem))
	{
		OSDR_FillOsdSegBitmap(BMP_FG_MARK_CHECK,
							pAbsArea,
							LISTITEM_SELECTION_STARTX,
							(pAbsArea->mwH >> 1),
							ALIGN_H_LEFT, ALIGN_V_CENTER,
							NULL_EXPANSION, NULL_EXPANSION);

	}

	oFormUniStr.mtFontIndex = FONT_0;

	OSDR_GetFormUniStr_OsdMessage((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr, pItem->moParam.mwOsdMsgIndex);

	OSDR_FillOsdSegUniString((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr,
							pAbsArea,
							LISTITEM_TEXT_STARTX,
							(pAbsArea->mwH >> 1),
							ALIGN_H_LEFT,
							ALIGN_V_CENTER,
							wColor);

	if(MS_IsFocusable(pThis) && MS_IsFocused(pThis))
		OSDR_FillOsdSegBitmapFitArea(BMP_FG_FOCUS, pAbsArea);

	return FALSE;
}

/***************************************************************************************
*	Function	: 	ChoiceOperation
*
*	In		: 	pThis	=	Pointer to the Choice (MSO_CHOICE) object.
*
*				MsOp	=	Operation ID.
*
*				lParam	=	Parameter associated with an MS_OP if any.
*
*	Out		: 	None.
*
*	Return	:	ID of the operation that is to be propagated once processing is done,
*				otherwise MS_OP_NONE.
*
*	Desc 	:	This function default operation function of MSO_CHOICE objects.
****************************************************************************************/
BOOL ChoiceFillOSDSeg(MSO_OBJECT __NEAR* pThis, MS_AREA __NEAR* pAbsArea)
{
	FORMATED_UNICODE_STRING oFormUniStr;

	MSO_CHOICE __NEAR* pChoice = (MSO_CHOICE __NEAR*)pThis;
	MS_DESCRIPTOR_CHOICE* pDescriptorChoice = (MS_DESCRIPTOR_CHOICE*)pThis->mpDescriptor;
	UINT16 wColor = ((MS_IsFocused(pThis) || MS_IS_FOCUS_ON_LASTITEM(pThis)) ? CIDX_4 : pDescriptorChoice->mwNameTextColor);
	UINT16 wValueColor = (MS_IsFocused(pThis) ? CIDX_4 : pDescriptorChoice->mwValueTextColor);
	
	INT16 sStartX = MS_IS_CHOICE_DISPLAY_AS_BUTTON(pThis) ? (pAbsArea->mwW >> 1) : NAME_START_XPOS;
	UINT8 cHAlign = MS_IS_CHOICE_DISPLAY_AS_BUTTON(pThis) ? ALIGN_H_CENTER : ALIGN_H_LEFT;

	oFormUniStr.mtFontIndex = FONT_0;

	if(MS_IS_CHOICE_DISABLED(pThis))
		wColor = wValueColor = CIDX_4;

	if(MS_IsFocused(pThis) || MS_CHOICE_IS_DISPLAY_AS_TAB(pThis) || MS_IS_CHOICE_DISPLAY_BG_BMP(pThis))
		OSDR_FillOsdSegBitmapFitArea(pDescriptorChoice->mpBgBmp, pAbsArea);

	// Display the name of the choice, if required:
	if(!MS_IS_CHOICE_NO_NAME_REQUIRED(pThis))
	{
		OSDR_GetFormUniStr_OsdMessage((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr, pDescriptorChoice->mName);

	        OSDR_FillOsdSegUniString((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr,
								pAbsArea,
								sStartX,
								(pAbsArea->mwH >> 1),
								cHAlign,
								ALIGN_V_CENTER,
								wColor);
	}

	if((!MS_CHOICE_IS_DISPLAY_AS_TAB(pThis)) && (!MS_IS_CHOICE_DISPLAY_AS_BUTTON(pThis)))
	{
		if(!MS_IS_CHOICE_NO_NAME_REQUIRED(pThis))
		{
			// Colon
			OSDR_GetFormUniStr_Flash((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr, (UINT32)COLON);

			OSDR_FillOsdSegUniString((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr,
									pAbsArea,
									(pAbsArea->mwW >> 1),
									(pAbsArea->mwH >> 1),
									ALIGN_H_LEFT,
									ALIGN_V_CENTER,
									wColor);
		}

		// Parameter value.
		OSDR_GetFormUniStr_OsdMessage((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr,
										pDescriptorChoice->mpData[pChoice->moParam.mwCurrValIndex].mwOsdMsgIndex);

		OSDR_FillOsdSegUniString((FORMATED_UNICODE_STRING __NEAR*)&oFormUniStr,
								pAbsArea,
								MS_IS_CHOICE_NO_NAME_REQUIRED(pThis) ? sStartX : (pAbsArea->mwW >> 1) + 12,
								(pAbsArea->mwH >> 1),
								ALIGN_H_LEFT,
								ALIGN_V_CENTER,
								wValueColor);
	}

	if(!MS_IsFocusable(pThis))
		return FALSE;

	if(MS_IsFocused(pThis))
		OSDR_FillOsdSegBitmapFitArea(BMP_FG_FOCUS, pAbsArea);

	if(MS_CHOICE_IS_DISPLAY_AS_TAB(pThis))
	{
		OSDR_FillOsdSegRectangle(pThis->moArea.mwW - CHOICE_OVERLAP_VALUELIST_W,
								0,
								CHOICE_OVERLAP_VALUELIST_W,
								pThis->moArea.mwH,
								pAbsArea,
								pDescriptorChoice->mwBgColor);
	}
	return FALSE;
}

/***************************************************************************************
* Choice Public utility function declarations.
****************************************************************************************/

/***************************************************************************************
*	Function	: 	OCHOICE_AddItemsToVList
*
*	In		: 	pChoice			=	Pointer to List to the MSO_CHOICE object.
*
*				pList				=	Pointer to List to which items would to be added.
*
*	Out		: 	None.
*
*	Return	:	TRUE if all the items could be added, FALSE otherwise
*
*	Desc 	:	This is a convienience function - This function is generic code (to add a list
*				of items to a vertical list) that will work in most cases. The number of items that would
*				be added depends on the number of values an MSO_CHOICE object can have
*				(i.e. MS_DESCRIPTOR_CHOICE::mcTotalValues).
****************************************************************************************/
BOOL OCHOICE_AddItemsToVList(MSO_CHOICE __NEAR* pChoice, MSO_VLIST __NEAR* pList)
{
	UINT8 cIndex;
	UINT8 cNumItems;
	MSO_LISTITEM __NEAR* pListItem;
	MS_DESCRIPTOR_CHOICE* pDescriptorChoice;
	CONST MS_DESCRIPTOR_LISTITEM* pDescriptorListItem;

	pDescriptorChoice 	= (MS_DESCRIPTOR_CHOICE*)((MSO_OBJECT __NEAR*)pChoice)->mpDescriptor;
	pDescriptorListItem = (CONST MS_DESCRIPTOR_LISTITEM*)(pDescriptorChoice->mpDescriptorValue);

	if((NULL != pChoice) && (NULL != pList))
	{
		UINT16 wItemIndex = 0;

		pList->moParam.mwTotalItems = pDescriptorChoice->mcTotalValues;

		cNumItems = MIN(pList->moParam.mcNumVisibleItems, 	(pList->moParam.mwTotalItems - pList->moParam.mwFirstDisplayItem));

		for(cIndex = 0; cIndex < cNumItems; cIndex++)
		{
			pListItem = (MSO_LISTITEM __NEAR*)OVLIST_CreatAndAddItem((MSO_OBJECT __NEAR*)pList, (MS_DESCRIPTOR*)pDescriptorListItem, TRUE, FALSE);
			wItemIndex = pList->moParam.mwFirstDisplayItem + cIndex;

			MS_SendOperation((MSO_OBJECT __NEAR*)pListItem, MS_OP_OPEN, 0);

			pListItem->moParam.mwOsdMsgIndex 	= pDescriptorChoice->mpData[wItemIndex].mwOsdMsgIndex;
			pListItem->moParam.mwValue 		= pDescriptorChoice->mpData[wItemIndex].mwValue;

			MS_SendOperation((MSO_OBJECT __NEAR*)pListItem, MS_OP_INIT, 0);

			if(pChoice->moParam.mwCurrValIndex == wItemIndex)
				MS_SetSelected(pListItem);
		}
		return TRUE;
	}
	return FALSE;
}

/***************************************************************************************
*	Function	: 	OCHOICE_GetIndexFromValue
*
*	In		: 	pThis	=	Pointer to List to the MSO_CHOICE object.
*
*				wValue	=	Value, who's index is to be searched for.
*
*	Out		: 	None.
*
*	Return	:	Index corresponding to wValue.
*
*	Desc 	:	This function search the table of value (mpData), and returns the index number
*				corresponding to wValue. Returns index of the first item if the value cannot be
*				found in the table.
****************************************************************************************/
UINT8 OCHOICE_GetIndexFromValue(MSO_OBJECT __NEAR* pThis, UINT16 wValue)
{
	if(NULL != pThis)
	{
		UINT8 cIndex;
		MS_DESCRIPTOR_CHOICE* pDescriptor = (MS_DESCRIPTOR_CHOICE*)pThis->mpDescriptor;

		for(cIndex = 0; cIndex < pDescriptor->mcTotalValues; cIndex++)
		{
			if(wValue == pDescriptor->mpData[cIndex].mwValue)
				return cIndex;
		}
	}
	return 0;// Return index of the first item, if the specified value is not found.
}

/***************************************************************************************
*	Function	: 	OCHOICE_GetValueFromIndex
*
*	In		: 	pThis	=	Pointer to List to the MSO_CHOICE object.
*
*				wIndex	=	Index, who's value is to be searched for.
*
*	Out		: 	None.
*
*	Return	:	Value corresponding to wIndex.
*
*	Desc 	:	This function returns the value (mpData) at index wIndex in the mpData table.
****************************************************************************************/
UINT16 OCHOICE_GetValueFromIndex(MSO_OBJECT __NEAR* pThis, UINT16 wIndex)
{
	if(NULL != pThis)
	{
		MS_DESCRIPTOR_CHOICE* pDescriptor = (MS_DESCRIPTOR_CHOICE*)pThis->mpDescriptor;

		if(wIndex >= pDescriptor->mcTotalValues)
			return INVALID_VALUE;
		else
			return pDescriptor->mpData[wIndex].mwValue;
	}
	return INVALID_VALUE;
}