sl@0: /*
sl@0:  *
sl@0:  * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
sl@0:  *
sl@0:  */
sl@0: 
sl@0: #include "LETypes.h"
sl@0: #include "LEFontInstance.h"
sl@0: #include "DeviceTables.h"
sl@0: #include "AnchorTables.h"
sl@0: #include "LESwaps.h"
sl@0: 
sl@0: U_NAMESPACE_BEGIN
sl@0: 
sl@0: void AnchorTable::getAnchor(LEGlyphID glyphID, const LEFontInstance *fontInstance,
sl@0:                             LEPoint &anchor) const
sl@0: {
sl@0:     switch(SWAPW(anchorFormat)) {
sl@0:     case 1:
sl@0:     {
sl@0:         const Format1AnchorTable *f1 = (const Format1AnchorTable *) this;
sl@0: 
sl@0:         f1->getAnchor(fontInstance, anchor);
sl@0:         break;
sl@0:     }
sl@0: 
sl@0:     case 2:
sl@0:     {
sl@0:         const Format2AnchorTable *f2 = (const Format2AnchorTable *) this;
sl@0: 
sl@0:         f2->getAnchor(glyphID, fontInstance, anchor);
sl@0:         break;
sl@0:     }
sl@0: 
sl@0:     case 3:
sl@0:     {
sl@0:         const Format3AnchorTable *f3 = (const Format3AnchorTable *) this;
sl@0: 
sl@0:         f3->getAnchor(fontInstance, anchor);
sl@0:         break;
sl@0:     }
sl@0: 
sl@0:     default:
sl@0:         // Unknown format, set the anchor point to (0, 0)
sl@0:         anchor.fX = 0;
sl@0:         anchor.fY = 0;
sl@0:         break;
sl@0:     }
sl@0: }
sl@0: 
sl@0: void Format1AnchorTable::getAnchor(const LEFontInstance *fontInstance, LEPoint &anchor) const
sl@0: {
sl@0:     le_int16 x = SWAPW(xCoordinate);
sl@0:     le_int16 y = SWAPW(yCoordinate);
sl@0:     LEPoint pixels;
sl@0: 
sl@0:     fontInstance->transformFunits(x, y, pixels);
sl@0: 
sl@0:     fontInstance->pixelsToUnits(pixels, anchor);
sl@0: }
sl@0: 
sl@0: void Format2AnchorTable::getAnchor(LEGlyphID glyphID, const LEFontInstance *fontInstance, LEPoint &anchor) const
sl@0: {
sl@0:     LEPoint point;
sl@0: 
sl@0:     if (! fontInstance->getGlyphPoint(glyphID, SWAPW(anchorPoint), point)) {
sl@0:         le_int16 x = SWAPW(xCoordinate);
sl@0:         le_int16 y = SWAPW(yCoordinate);
sl@0: 
sl@0:         fontInstance->transformFunits(x, y, point);
sl@0:     }
sl@0: 
sl@0: 
sl@0:     fontInstance->pixelsToUnits(point, anchor);
sl@0: }
sl@0: 
sl@0: void Format3AnchorTable::getAnchor(const LEFontInstance *fontInstance, LEPoint &anchor) const
sl@0: {
sl@0:     le_int16 x = SWAPW(xCoordinate);
sl@0:     le_int16 y = SWAPW(yCoordinate);
sl@0:     LEPoint pixels;
sl@0:     Offset dtxOffset = SWAPW(xDeviceTableOffset);
sl@0:     Offset dtyOffset = SWAPW(yDeviceTableOffset);
sl@0: 
sl@0:     fontInstance->transformFunits(x, y, pixels);
sl@0: 
sl@0:     if (dtxOffset != 0) {
sl@0:         const DeviceTable *dtx = (const DeviceTable *) ((char *) this + dtxOffset);
sl@0:         le_int16 adjx = dtx->getAdjustment((le_int16) fontInstance->getXPixelsPerEm());
sl@0: 
sl@0:         pixels.fX += adjx;
sl@0:     }
sl@0: 
sl@0:     if (dtyOffset != 0) {
sl@0:         const DeviceTable *dty = (const DeviceTable *) ((char *) this + dtyOffset);
sl@0:         le_int16 adjy = dty->getAdjustment((le_int16) fontInstance->getYPixelsPerEm());
sl@0: 
sl@0:         pixels.fY += adjy;
sl@0:     }
sl@0: 
sl@0:     fontInstance->pixelsToUnits(pixels, anchor);
sl@0: }
sl@0: 
sl@0: U_NAMESPACE_END
sl@0: