/*

  *

  * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved

  *

  */

 #include "LETypes.h"

 #include "LEFontInstance.h"

 #include "DeviceTables.h"

 #include "AnchorTables.h"

 #include "LESwaps.h"

 U_NAMESPACE_BEGIN

 void AnchorTable::getAnchor(LEGlyphID glyphID, const LEFontInstance *fontInstance,

                             LEPoint &anchor) const

 {

     switch(SWAPW(anchorFormat)) {

     case 1:

     {

         const Format1AnchorTable *f1 = (const Format1AnchorTable *) this;

         f1->getAnchor(fontInstance, anchor);

         break;

     }

     case 2:

     {

         const Format2AnchorTable *f2 = (const Format2AnchorTable *) this;

         f2->getAnchor(glyphID, fontInstance, anchor);

         break;

     }

     case 3:

     {

         const Format3AnchorTable *f3 = (const Format3AnchorTable *) this;

         f3->getAnchor(fontInstance, anchor);

         break;

     }

     default:

         // Unknown format, set the anchor point to (0, 0)

         anchor.fX = 0;

         anchor.fY = 0;

         break;

     }

 }

 void Format1AnchorTable::getAnchor(const LEFontInstance *fontInstance, LEPoint &anchor) const

 {

     le_int16 x = SWAPW(xCoordinate);

     le_int16 y = SWAPW(yCoordinate);

     LEPoint pixels;

     fontInstance->transformFunits(x, y, pixels);

     fontInstance->pixelsToUnits(pixels, anchor);

 }

 void Format2AnchorTable::getAnchor(LEGlyphID glyphID, const LEFontInstance *fontInstance, LEPoint &anchor) const

 {

     LEPoint point;

     if (! fontInstance->getGlyphPoint(glyphID, SWAPW(anchorPoint), point)) {

         le_int16 x = SWAPW(xCoordinate);

         le_int16 y = SWAPW(yCoordinate);

         fontInstance->transformFunits(x, y, point);

     }

     fontInstance->pixelsToUnits(point, anchor);

 }

 void Format3AnchorTable::getAnchor(const LEFontInstance *fontInstance, LEPoint &anchor) const

 {

     le_int16 x = SWAPW(xCoordinate);

     le_int16 y = SWAPW(yCoordinate);

     LEPoint pixels;

     Offset dtxOffset = SWAPW(xDeviceTableOffset);

     Offset dtyOffset = SWAPW(yDeviceTableOffset);

     fontInstance->transformFunits(x, y, pixels);

     if (dtxOffset != 0) {

         const DeviceTable *dtx = (const DeviceTable *) ((char *) this + dtxOffset);

         le_int16 adjx = dtx->getAdjustment((le_int16) fontInstance->getXPixelsPerEm());

         pixels.fX += adjx;

     }

     if (dtyOffset != 0) {

         const DeviceTable *dty = (const DeviceTable *) ((char *) this + dtyOffset);

         le_int16 adjy = dty->getAdjustment((le_int16) fontInstance->getYPixelsPerEm());

         pixels.fY += adjy;

     }

     fontInstance->pixelsToUnits(pixels, anchor);

 }

 U_NAMESPACE_END