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/*
* @(#)AnchorTables.cpp 1.6 00/03/15
*
* (C) Copyright IBM Corp. 1998, 1999, 2000, 2001 - 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:
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
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