1/*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.  Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26/*
27 *
28 * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
29 *
30 */
31
32#include "LETypes.h"
33#include "LEFontInstance.h"
34#include "DeviceTables.h"
35#include "AnchorTables.h"
36#include "LESwaps.h"
37
38U_NAMESPACE_BEGIN
39
40void AnchorTable::getAnchor(const LETableReference &base, LEGlyphID glyphID, const LEFontInstance *fontInstance,
41                            LEPoint &anchor, LEErrorCode &success) const
42{
43  switch(SWAPW(anchorFormat)) {
44    case 1:
45    {
46        LEReferenceTo<Format1AnchorTable> f1(base, success);
47        if (LE_SUCCESS(success)) {
48            f1->getAnchor(f1, fontInstance, anchor, success);
49        }
50        break;
51    }
52
53    case 2:
54    {
55        LEReferenceTo<Format2AnchorTable> f2(base, success);
56        if (LE_SUCCESS(success)) {
57            f2->getAnchor(f2, glyphID, fontInstance, anchor, success);
58        }
59        break;
60    }
61
62    case 3:
63    {
64        LEReferenceTo<Format3AnchorTable> f3(base, success);
65        if (LE_SUCCESS(success)) {
66            f3->getAnchor(f3, fontInstance, anchor, success);
67        }
68        break;
69    }
70
71    default:
72    {
73        // unknown format: just use x, y coordinate, like format 1...
74        LEReferenceTo<Format1AnchorTable> f1(base, success);
75        if (LE_SUCCESS(success)) {
76            f1->getAnchor(f1, fontInstance, anchor, success);
77        }
78        break;
79    }
80  }
81}
82
83void Format1AnchorTable::getAnchor(const LEReferenceTo<Format1AnchorTable>& base, const LEFontInstance *fontInstance, LEPoint &anchor, LEErrorCode &success) const
84{
85    le_int16 x = SWAPW(xCoordinate);
86    le_int16 y = SWAPW(yCoordinate);
87    LEPoint pixels;
88
89    fontInstance->transformFunits(x, y, pixels);
90    fontInstance->pixelsToUnits(pixels, anchor);
91}
92
93void Format2AnchorTable::getAnchor(const LEReferenceTo<Format2AnchorTable>& base,
94                                   LEGlyphID glyphID, const LEFontInstance *fontInstance, LEPoint &anchor
95                                   , LEErrorCode &success) const
96{
97    LEPoint point;
98
99    if (! fontInstance->getGlyphPoint(glyphID, SWAPW(anchorPoint), point)) {
100        le_int16 x = SWAPW(xCoordinate);
101        le_int16 y = SWAPW(yCoordinate);
102
103        fontInstance->transformFunits(x, y, point);
104    }
105
106
107    fontInstance->pixelsToUnits(point, anchor);
108}
109
110void Format3AnchorTable::getAnchor(const LEReferenceTo<Format3AnchorTable> &base, const LEFontInstance *fontInstance,
111                                   LEPoint &anchor, LEErrorCode &success) const
112{
113    le_int16 x = SWAPW(xCoordinate);
114    le_int16 y = SWAPW(yCoordinate);
115    LEPoint pixels;
116    Offset dtxOffset = SWAPW(xDeviceTableOffset);
117    Offset dtyOffset = SWAPW(yDeviceTableOffset);
118
119    fontInstance->transformFunits(x, y, pixels);
120
121    if (dtxOffset != 0) {
122        LEReferenceTo<DeviceTable> dt(base, success, dtxOffset);
123        if (LE_SUCCESS(success)) {
124            le_int16 adjx = dt->getAdjustment(dt, (le_int16) fontInstance->getXPixelsPerEm(), success);
125            pixels.fX += adjx;
126        }
127    }
128
129    if (dtyOffset != 0) {
130        LEReferenceTo<DeviceTable> dt(base, success, dtyOffset);
131        if (LE_SUCCESS(success)) {
132            le_int16 adjy = dt->getAdjustment(dt, (le_int16) fontInstance->getYPixelsPerEm(), success);
133            pixels.fY += adjy;
134        }
135    }
136
137    fontInstance->pixelsToUnits(pixels, anchor);
138}
139
140U_NAMESPACE_END
141
142