udbmffnt.c

S1D13506windml下的驱动程序,支持vxworks5.4 支持tornado2.0 windml2.0

/***************************************************************************
*
* uglBMFFontDriverDestroy - 
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontDriverDestroy
    (
    UGL_FONT_DRIVER * pFontDriver 
    )
    {   
    UGL_STATUS status = UGL_STATUS_OK;
    UGL_BMF_FONT_DRIVER * pBMFFontDriver = 
	(UGL_BMF_FONT_DRIVER *)pFontDriver;

    /* Destroy any remaining fonts that may still exist. However,
       the application really should take care of this first */
    if (pBMFFontDriver->pFirstFont != UGL_NULL)
	{
	UGL_BMF_FONT * pBMFFont = pBMFFontDriver->pFirstFont;
	UGL_BMF_FONT * pNextBMFFont;

	while(pBMFFont != UGL_NULL)
	    {
	    pNextBMFFont = pBMFFont->pNextFont;
	    pBMFFont->referenceCount = 1;
	    (*pFontDriver->fontDestroy)((UGL_FONT *)pBMFFont);
	    pBMFFont = pNextBMFFont;
	    }
	}

    uglOSLockDelete(pBMFFontDriver->lockId);

    /* Delete lock */
    UGL_FREE(pFontDriver);
    pFontDriver = UGL_NULL;

    return(status);
    }

/***************************************************************************
*
* uglBMFFontFindFirst - 
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_SEARCH_ID uglBMFFontFindFirst
    (
    UGL_FONT_DRIVER * pFontDriver,
    UGL_FONT_DESC * pFontDescriptor
    )
    {
    UGL_SEARCH_ID searchId = UGL_NULL_ID;

    if (uglBMFFontData[0] != UGL_NULL)
        {
        searchId = (UGL_SEARCH_ID)UGL_MALLOC(sizeof (UGL_SEARCH_ID));
        *pFontDescriptor = *(UGL_FONT_DESC *)(uglBMFFontData[0]);
        *(UGL_UINT32 *)searchId = 1;
        }

    return(searchId);
    }

/***************************************************************************
*
* uglBMFFontFindNext - 
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontFindNext
    (
    UGL_FONT_DRIVER * pFontDriver,
    UGL_FONT_DESC * pFontDescriptor,
    UGL_SEARCH_ID searchId
    )
    {
    if(searchId == UGL_NULL_ID)
        return (UGL_STATUS_ERROR);
       
    if (uglBMFFontData[*(UGL_UINT32 *)searchId] != UGL_NULL)
	{
	*pFontDescriptor = *(UGL_FONT_DESC *)(uglBMFFontData[*(UGL_UINT32 *)searchId]);
	(*(UGL_UINT32 *)searchId)++;
        return (UGL_STATUS_OK);
	}
    else
        return (UGL_STATUS_FINISHED);
    }

/***************************************************************************
*
* uglBMFFontFindClose - 
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontFindClose
    (
    UGL_FONT_DRIVER * pFontDriver,
    UGL_SEARCH_ID searchId
    )
    {
    if (searchId == UGL_NULL_ID)
        return (UGL_STATUS_ERROR);

    UGL_FREE (searchId);
    searchId = UGL_NULL_ID;

    return(UGL_STATUS_OK);
    }

/***************************************************************************
*
* uglBMFFontDriverInfo - 
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontDriverInfo
    (
    UGL_FONT_DRIVER * pFontDriver,
    UGL_INFO_REQ infoRequest,
    void * pInfo
    )
    {
    UGL_STATUS status = UGL_STATUS_ERROR;

    switch (infoRequest)
	{
	/* This should not be done after uglInitialize() */
	case UGL_BMF_GLYPH_CACHE_CONFIG:
	    {
	    UGL_BMF_FONT_DRIVER * pBMFFontDriver = 
		(UGL_BMF_FONT_DRIVER *)pFontDriver;

	    if(uglBMFCacheConfig != UGL_FALSE)
		return(UGL_STATUS_ERROR);

	    if(UGL_NULL != pInfo)
		{
		if (((UGL_BMF_CACHE_CONFIG *)pInfo)->glyphCacheSize < 0)
		    {
		    pBMFFontDriver->glyphCacheSize = UGL_BMF_GLYPH_CACHE_SIZE_MAX;
		    }
		pBMFFontDriver->glyphCacheSize = 
		    ((UGL_BMF_CACHE_CONFIG *)pInfo)->glyphCacheSize;

		pBMFFontDriver->glyphCachePoolId = 
		    ((UGL_BMF_CACHE_CONFIG *)pInfo)->glyphCachePoolId;

		uglBMFCacheConfig = UGL_TRUE;

		status = UGL_STATUS_OK;
		}
	    else
		status = UGL_STATUS_ERROR;
	    }
	    break;

	case UGL_FONT_TEXT_ORIGIN:
	    {
	    UGL_BMF_FONT_DRIVER * pBMFFontDriver =
		(UGL_BMF_FONT_DRIVER *)pFontDriver;

	    if(UGL_NULL != pInfo)
		{
		if(*(UGL_ORD *)pInfo == UGL_FONT_TEXT_UPPER_LEFT ||
		   *(UGL_ORD *)pInfo == UGL_FONT_TEXT_BASELINE)
		    {
		    pBMFFontDriver->textOrigin = *(UGL_ORD *)pInfo;
		    status = UGL_STATUS_OK;
		    }
		else
		    status = UGL_STATUS_ERROR;
		}
	    else
		status = UGL_STATUS_ERROR;
	    }
	    break;

	default:
	    return (UGL_STATUS_ERROR);
	}

    return(status);
    }

/***************************************************************************
*
* uglBMFFontMetricsGet - 
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontMetricsGet
    (
    UGL_FONT * pFont,
    UGL_FONT_METRICS * pFontMetrics
    )
    {
    UGL_BMF_FONT *pBMFFont = (UGL_BMF_FONT *)pFont;

    pFontMetrics->pixelSize = pBMFFont->pBMFFontDesc->header.pixelSize.min;
    pFontMetrics->weight = pBMFFont->pBMFFontDesc->header.weight.min;
    pFontMetrics->italic = pBMFFont->pBMFFontDesc->header.italic;
    pFontMetrics->maxAscent = pBMFFont->pBMFFontDesc->maxAscent;
    pFontMetrics->maxDescent = pBMFFont->pBMFFontDesc->maxDescent;
    pFontMetrics->maxAdvance = pBMFFont->pBMFFontDesc->maxAdvance;
    pFontMetrics->height = pFontMetrics->maxAscent + pFontMetrics->maxDescent;
    pFontMetrics->leading = pBMFFont->pBMFFontDesc->leading;
    pFontMetrics->spacing = pBMFFont->pBMFFontDesc->header.spacing;
    pFontMetrics->fontType = UGL_FONT_BITMAPPED;
    pFontMetrics->scalable = UGL_FALSE;
    pFontMetrics->charSet = pBMFFont->pBMFFontDesc->header.charSet;
    strncpy(pFontMetrics->faceName, pBMFFont->pBMFFontDesc->header.faceName,
	    UGL_FONT_FACE_NAME_MAX_LENGTH);
    pFontMetrics->faceName[UGL_FONT_FACE_NAME_MAX_LENGTH - 1] = 0;
    strncpy(pFontMetrics->familyName, pBMFFont->pBMFFontDesc->header.familyName,
	    UGL_FONT_FAMILY_NAME_MAX_LENGTH);
    pFontMetrics->familyName[UGL_FONT_FAMILY_NAME_MAX_LENGTH - 1] = 0;

    return(UGL_STATUS_OK);
    }

/***************************************************************************
*
* uglBMFFontRotationAngleSet - Unsupported in BMF driver
*
* This function is a stub for the uglFontRotationAngleSet() function.
* The BMF driver does not implement any functionality for this feature.
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontRotationAngleSet 
    (
    UGL_FONT * pFont,
    UGL_ORD angle
    )
    {
    return(UGL_STATUS_ERROR);
    }

/***************************************************************************
*
* uglBMFFontSizeSet - Unsupported in BMF driver
*
* This function is a stub for the uglFontSizeSet() function.
* The BMF driver does not implement any functionality for this feature.
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontSizeSet 
    (
    UGL_FONT * pFont,
    UGL_SIZE size
    )
    {
    return(UGL_STATUS_ERROR);
    }

/***************************************************************************
*
* uglBMFFontWeightSet - Unsupported in BMF driver
*
* This function is a stub for the uglFontWeightSet() function. 
* The BMF driver does not implement any functionality for this feature.
*
*/

UGL_LOCAL UGL_STATUS uglBMFFontWeightSet 
    (
    UGL_FONT * pFont,
    UGL_SIZE weight
    )
    {
    return(UGL_STATUS_ERROR);
    }

/***************************************************************************
*
* uglBMFTextDraw - draw text
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFTextDraw
    (
    UGL_GC * pGc, 
    UGL_POS x, 
    UGL_POS y,
    UGL_SIZE length,
    const UGL_CHAR * text
    )
    {
    UGL_UGI_DRIVER * pDriver = pGc->pDriver;
    UGL_BMF_FONT * pBMFFont = (UGL_BMF_FONT *)pGc->pFont;
    UGL_BMF_FONT_DRIVER * pBMFFontDriver = 
	(UGL_BMF_FONT_DRIVER *)pBMFFont->header.pFontDriver;
    UGL_FONT_DRIVER * pFontDriver = 
	(UGL_FONT_DRIVER *)pBMFFont->header.pFontDriver;
    UGL_GLYPH_CACHE_ELEMENT *pCacheElement;
    UGL_STATUS status = UGL_STATUS_OK;
    UGL_SIZE maxAscent = pBMFFont->pBMFFontDesc->maxAscent;
    void ** ppPageZero = pBMFFont->pageZero;
    void ** ppPageElement;
    UGL_COLOR saveColor;
    UGL_POINT point;
    int i;

    /* Make sure the font and text are valid */

    if (pBMFFont == UGL_NULL || text == UGL_NULL || text[0] == 0)
        return (UGL_STATUS_ERROR);

    /* Set a large text length, if -1 is specified */

    if (length <= 0)
        length = 0x0fff;

    /* Draw the text background */
    if (pGc->backgroundColor != UGL_COLOR_TRANSPARENT)
	{
	UGL_SIZE width, height;
	UGL_RECT rect;
	UGL_POS tmpY;

	(*pFontDriver->textSizeGet)(pGc->pFont, &width, &height,
				    length, text);

	if(pBMFFontDriver->textOrigin == UGL_FONT_TEXT_UPPER_LEFT)
	    {
	    rect.right = x + width - 1;
	    rect.bottom = y + height - 1;
	    rect.left = x;
	    rect.top = y;
	    }
	else if(pBMFFontDriver->textOrigin == UGL_FONT_TEXT_BASELINE)
	    {
	    tmpY = y - maxAscent;
	    rect.right = x + width - 1;
	    rect.bottom = tmpY + height - 1;
	    rect.left = x;
	    rect.top = tmpY;
	    }
	else
	    {
	    return(UGL_STATUS_ERROR);
	    }

	saveColor = pGc->foregroundColor;
	pGc->foregroundColor = UGL_COLOR_TRANSPARENT;
	pGc->changed |= UGL_GC_FOREGROUND_COLOR_CHANGED;
	UGL_GC_CHANGED_SET(pGc);
	UGL_GC_SET(pDriver, pGc);

	(*pDriver->rectangle)(pDriver, &rect);

	pGc->foregroundColor = saveColor;
	pGc->changed |= UGL_GC_FOREGROUND_COLOR_CHANGED;
	UGL_GC_CHANGED_SET(pGc);
	UGL_GC_SET(pDriver, pGc);
	}

    saveColor = pGc->backgroundColor;
    pGc->backgroundColor = UGL_COLOR_TRANSPARENT;
    pGc->changed |= UGL_GC_BACKGROUND_COLOR_CHANGED;
    UGL_GC_CHANGED_SET(pGc);
    UGL_GC_SET(pDriver, pGc);

    /* Blit each character to the screen */
    for (i = 0; UGL_NULL != *text && i < length; i++) 
	{
	ppPageElement = &ppPageZero[(UGL_UINT8)*(text++)];

	pCacheElement = (UGL_GLYPH_CACHE_ELEMENT *)*ppPageElement;

	/* If encoding doesn't map to a glyph, don't do anything */
	if (UGL_NULL == pCacheElement)
	    {
	    continue;
	    }

	/* Check to see if glyph is in cache or not */
	if (UGL_BMF_GLYPH_IN_CACHE != pCacheElement->cacheFlag)
	    {
	    pCacheElement = uglBMFGlyphCacheAlloc(pFontDriver, 
						  ppPageElement);

	    if (UGL_NULL == pCacheElement)
		{
		status = UGL_STATUS_ERROR;
		break;
		}
	    }

	/* Blit glyph to the screen */
	if(pBMFFontDriver->textOrigin == UGL_FONT_TEXT_UPPER_LEFT)
	    {
	    point.x = x;
	    point.y = y + maxAscent - (UGL_POS)pCacheElement->ascent;
	    (*pDriver->monoBitmapBlt)(pDriver, pCacheElement->bitmapID, 
				      &pCacheElement->bitmapRect, 
				      UGL_DEFAULT_ID, &point);

	    x += pCacheElement->width;
	    }
	else if(pBMFFontDriver->textOrigin == UGL_FONT_TEXT_BASELINE)
	    {
	    point.x = x;
	    point.y = y - (UGL_POS)pCacheElement->ascent;
	    (*pDriver->monoBitmapBlt)(pDriver, pCacheElement->bitmapID, 
				      &pCacheElement->bitmapRect, 
				      UGL_DEFAULT_ID, &point);

	    x += pCacheElement->width;
	    }
	else
	    {
	    status = UGL_STATUS_ERROR;
	    break;
	    }
	}

    /* Restore gc */
    pGc->backgroundColor = saveColor;
    pGc->changed |= UGL_GC_BACKGROUND_COLOR_CHANGED;
    UGL_GC_CHANGED_SET(pGc);
    UGL_GC_SET(pDriver, pGc);

    return (status);
    }

/***************************************************************************
*
* uglBMFTextSizeGet - Get the width and height of a text string
*
* NOMANUAL
*
*/

UGL_LOCAL UGL_STATUS uglBMFTextSizeGet
    (
    UGL_FONT * pFont, 
    UGL_SIZE * pWidth,
    UGL_SIZE * pHeight,
    UGL_SIZE length,
    const UGL_CHAR *text
    )
    {