|
sl@0
|
1 |
/*
|
|
sl@0
|
2 |
*
|
|
sl@0
|
3 |
* (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
|
|
sl@0
|
4 |
*
|
|
sl@0
|
5 |
*/
|
|
sl@0
|
6 |
|
|
sl@0
|
7 |
#include "LETypes.h"
|
|
sl@0
|
8 |
#include "GlyphPositionAdjustments.h"
|
|
sl@0
|
9 |
#include "LEGlyphStorage.h"
|
|
sl@0
|
10 |
#include "LEFontInstance.h"
|
|
sl@0
|
11 |
|
|
sl@0
|
12 |
U_NAMESPACE_BEGIN
|
|
sl@0
|
13 |
|
|
sl@0
|
14 |
#define CHECK_ALLOCATE_ARRAY(array, type, size) \
|
|
sl@0
|
15 |
if (array == NULL) { \
|
|
sl@0
|
16 |
array = (type *) new type[size]; \
|
|
sl@0
|
17 |
}
|
|
sl@0
|
18 |
|
|
sl@0
|
19 |
GlyphPositionAdjustments::GlyphPositionAdjustments(le_int32 glyphCount)
|
|
sl@0
|
20 |
: fGlyphCount(glyphCount), fEntryExitPoints(NULL), fAdjustments(NULL)
|
|
sl@0
|
21 |
{
|
|
sl@0
|
22 |
fAdjustments = (Adjustment *) new Adjustment[glyphCount];
|
|
sl@0
|
23 |
}
|
|
sl@0
|
24 |
|
|
sl@0
|
25 |
GlyphPositionAdjustments::~GlyphPositionAdjustments()
|
|
sl@0
|
26 |
{
|
|
sl@0
|
27 |
delete[] fEntryExitPoints;
|
|
sl@0
|
28 |
delete[] fAdjustments;
|
|
sl@0
|
29 |
}
|
|
sl@0
|
30 |
|
|
sl@0
|
31 |
const LEPoint *GlyphPositionAdjustments::getEntryPoint(le_int32 index, LEPoint &entryPoint) const
|
|
sl@0
|
32 |
{
|
|
sl@0
|
33 |
if (fEntryExitPoints == NULL) {
|
|
sl@0
|
34 |
return NULL;
|
|
sl@0
|
35 |
}
|
|
sl@0
|
36 |
|
|
sl@0
|
37 |
return fEntryExitPoints[index].getEntryPoint(entryPoint);
|
|
sl@0
|
38 |
}
|
|
sl@0
|
39 |
|
|
sl@0
|
40 |
const LEPoint *GlyphPositionAdjustments::getExitPoint(le_int32 index, LEPoint &exitPoint)const
|
|
sl@0
|
41 |
{
|
|
sl@0
|
42 |
if (fEntryExitPoints == NULL) {
|
|
sl@0
|
43 |
return NULL;
|
|
sl@0
|
44 |
}
|
|
sl@0
|
45 |
|
|
sl@0
|
46 |
return fEntryExitPoints[index].getExitPoint(exitPoint);
|
|
sl@0
|
47 |
}
|
|
sl@0
|
48 |
|
|
sl@0
|
49 |
void GlyphPositionAdjustments::setEntryPoint(le_int32 index, LEPoint &newEntryPoint, le_bool baselineIsLogicalEnd)
|
|
sl@0
|
50 |
{
|
|
sl@0
|
51 |
CHECK_ALLOCATE_ARRAY(fEntryExitPoints, EntryExitPoint, fGlyphCount);
|
|
sl@0
|
52 |
|
|
sl@0
|
53 |
fEntryExitPoints[index].setEntryPoint(newEntryPoint, baselineIsLogicalEnd);
|
|
sl@0
|
54 |
}
|
|
sl@0
|
55 |
|
|
sl@0
|
56 |
void GlyphPositionAdjustments::setExitPoint(le_int32 index, LEPoint &newExitPoint, le_bool baselineIsLogicalEnd)
|
|
sl@0
|
57 |
{
|
|
sl@0
|
58 |
CHECK_ALLOCATE_ARRAY(fEntryExitPoints, EntryExitPoint, fGlyphCount);
|
|
sl@0
|
59 |
|
|
sl@0
|
60 |
fEntryExitPoints[index].setExitPoint(newExitPoint, baselineIsLogicalEnd);
|
|
sl@0
|
61 |
}
|
|
sl@0
|
62 |
|
|
sl@0
|
63 |
void GlyphPositionAdjustments::setCursiveGlyph(le_int32 index, le_bool baselineIsLogicalEnd)
|
|
sl@0
|
64 |
{
|
|
sl@0
|
65 |
CHECK_ALLOCATE_ARRAY(fEntryExitPoints, EntryExitPoint, fGlyphCount);
|
|
sl@0
|
66 |
|
|
sl@0
|
67 |
fEntryExitPoints[index].setCursiveGlyph(baselineIsLogicalEnd);
|
|
sl@0
|
68 |
}
|
|
sl@0
|
69 |
|
|
sl@0
|
70 |
void GlyphPositionAdjustments::applyCursiveAdjustments(LEGlyphStorage &glyphStorage, le_bool rightToLeft, const LEFontInstance *fontInstance)
|
|
sl@0
|
71 |
{
|
|
sl@0
|
72 |
if (! hasCursiveGlyphs()) {
|
|
sl@0
|
73 |
return;
|
|
sl@0
|
74 |
}
|
|
sl@0
|
75 |
|
|
sl@0
|
76 |
le_int32 start = 0, end = fGlyphCount, dir = 1;
|
|
sl@0
|
77 |
le_int32 firstExitPoint = -1, lastExitPoint = -1;
|
|
sl@0
|
78 |
LEPoint entryAnchor, exitAnchor, pixels;
|
|
sl@0
|
79 |
LEGlyphID lastExitGlyphID = 0;
|
|
sl@0
|
80 |
float baselineAdjustment = 0;
|
|
sl@0
|
81 |
|
|
sl@0
|
82 |
// This removes a possible warning about
|
|
sl@0
|
83 |
// using exitAnchor before it's been initialized.
|
|
sl@0
|
84 |
exitAnchor.fX = exitAnchor.fY = 0;
|
|
sl@0
|
85 |
|
|
sl@0
|
86 |
if (rightToLeft) {
|
|
sl@0
|
87 |
start = fGlyphCount - 1;
|
|
sl@0
|
88 |
end = -1;
|
|
sl@0
|
89 |
dir = -1;
|
|
sl@0
|
90 |
}
|
|
sl@0
|
91 |
|
|
sl@0
|
92 |
for (le_int32 i = start; i != end; i += dir) {
|
|
sl@0
|
93 |
LEGlyphID glyphID = glyphStorage[i];
|
|
sl@0
|
94 |
|
|
sl@0
|
95 |
if (isCursiveGlyph(i)) {
|
|
sl@0
|
96 |
if (lastExitPoint >= 0 && getEntryPoint(i, entryAnchor) != NULL) {
|
|
sl@0
|
97 |
float anchorDiffX = exitAnchor.fX - entryAnchor.fX;
|
|
sl@0
|
98 |
float anchorDiffY = exitAnchor.fY - entryAnchor.fY;
|
|
sl@0
|
99 |
|
|
sl@0
|
100 |
baselineAdjustment += anchorDiffY;
|
|
sl@0
|
101 |
adjustYPlacement(i, baselineAdjustment);
|
|
sl@0
|
102 |
|
|
sl@0
|
103 |
if (rightToLeft) {
|
|
sl@0
|
104 |
LEPoint secondAdvance;
|
|
sl@0
|
105 |
|
|
sl@0
|
106 |
fontInstance->getGlyphAdvance(glyphID, pixels);
|
|
sl@0
|
107 |
fontInstance->pixelsToUnits(pixels, secondAdvance);
|
|
sl@0
|
108 |
|
|
sl@0
|
109 |
adjustXAdvance(i, -(anchorDiffX + secondAdvance.fX));
|
|
sl@0
|
110 |
} else {
|
|
sl@0
|
111 |
LEPoint firstAdvance;
|
|
sl@0
|
112 |
|
|
sl@0
|
113 |
fontInstance->getGlyphAdvance(lastExitGlyphID, pixels);
|
|
sl@0
|
114 |
fontInstance->pixelsToUnits(pixels, firstAdvance);
|
|
sl@0
|
115 |
|
|
sl@0
|
116 |
adjustXAdvance(lastExitPoint, anchorDiffX - firstAdvance.fX);
|
|
sl@0
|
117 |
}
|
|
sl@0
|
118 |
}
|
|
sl@0
|
119 |
|
|
sl@0
|
120 |
lastExitPoint = i;
|
|
sl@0
|
121 |
|
|
sl@0
|
122 |
if (getExitPoint(i, exitAnchor) != NULL) {
|
|
sl@0
|
123 |
if (firstExitPoint < 0) {
|
|
sl@0
|
124 |
firstExitPoint = i;
|
|
sl@0
|
125 |
}
|
|
sl@0
|
126 |
|
|
sl@0
|
127 |
lastExitGlyphID = glyphID;
|
|
sl@0
|
128 |
} else {
|
|
sl@0
|
129 |
if (baselineIsLogicalEnd(i) && firstExitPoint >= 0 && lastExitPoint >= 0) {
|
|
sl@0
|
130 |
le_int32 limit = lastExitPoint + dir;
|
|
sl@0
|
131 |
|
|
sl@0
|
132 |
for (le_int32 j = firstExitPoint; j != limit; j += dir) {
|
|
sl@0
|
133 |
if (isCursiveGlyph(j)) {
|
|
sl@0
|
134 |
adjustYPlacement(j, -baselineAdjustment);
|
|
sl@0
|
135 |
}
|
|
sl@0
|
136 |
}
|
|
sl@0
|
137 |
}
|
|
sl@0
|
138 |
|
|
sl@0
|
139 |
firstExitPoint = lastExitPoint = -1;
|
|
sl@0
|
140 |
baselineAdjustment = 0;
|
|
sl@0
|
141 |
}
|
|
sl@0
|
142 |
}
|
|
sl@0
|
143 |
}
|
|
sl@0
|
144 |
}
|
|
sl@0
|
145 |
|
|
sl@0
|
146 |
LEPoint *GlyphPositionAdjustments::EntryExitPoint::getEntryPoint(LEPoint &entryPoint) const
|
|
sl@0
|
147 |
{
|
|
sl@0
|
148 |
if (fFlags & EEF_HAS_ENTRY_POINT) {
|
|
sl@0
|
149 |
entryPoint = fEntryPoint;
|
|
sl@0
|
150 |
return &entryPoint;
|
|
sl@0
|
151 |
}
|
|
sl@0
|
152 |
|
|
sl@0
|
153 |
return NULL;
|
|
sl@0
|
154 |
}
|
|
sl@0
|
155 |
|
|
sl@0
|
156 |
LEPoint *GlyphPositionAdjustments::EntryExitPoint::getExitPoint(LEPoint &exitPoint) const
|
|
sl@0
|
157 |
{
|
|
sl@0
|
158 |
if (fFlags & EEF_HAS_EXIT_POINT) {
|
|
sl@0
|
159 |
exitPoint = fExitPoint;
|
|
sl@0
|
160 |
return &exitPoint;
|
|
sl@0
|
161 |
}
|
|
sl@0
|
162 |
|
|
sl@0
|
163 |
return NULL;
|
|
sl@0
|
164 |
}
|
|
sl@0
|
165 |
|
|
sl@0
|
166 |
U_NAMESPACE_END
|