author | ohair |
Wed, 06 Apr 2011 22:06:11 -0700 | |
changeset 9035 | 1255eb81cc2f |
parent 7936 | 4d5f799d3734 |
child 16891 | 91e99bed64ae |
permissions | -rw-r--r-- |
2 | 1 |
/* |
9035
1255eb81cc2f
7033660: Update copyright year to 2011 on any files changed in 2011
ohair
parents:
7936
diff
changeset
|
2 |
* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
|
5 |
* This code is free software; you can redistribute it and/or modify it |
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
|
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 10 |
* |
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
2 | 24 |
*/ |
25 |
||
26 |
/* |
|
27 |
* (C) Copyright IBM Corp. 1998-2001 - All Rights Reserved |
|
28 |
* |
|
29 |
* The original version of this source code and documentation is |
|
30 |
* copyrighted and owned by IBM. These materials are provided |
|
31 |
* under terms of a License Agreement between IBM and Sun. |
|
32 |
* This technology is protected by multiple US and International |
|
33 |
* patents. This notice and attribution to IBM may not be removed. |
|
34 |
*/ |
|
35 |
||
36 |
#include "FontInstanceAdapter.h" |
|
37 |
||
38 |
FontInstanceAdapter::FontInstanceAdapter(JNIEnv *theEnv, |
|
39 |
jobject theFont2D, |
|
40 |
jobject theFontStrike, |
|
41 |
float *matrix, |
|
42 |
le_int32 xRes, le_int32 yRes, |
|
43 |
le_int32 theUPEM, |
|
44 |
TTLayoutTableCache *ltables) |
|
45 |
: env(theEnv), font2D(theFont2D), fontStrike(theFontStrike), |
|
46 |
xppem(0), yppem(0), |
|
47 |
xScaleUnitsToPoints(0), yScaleUnitsToPoints(0), |
|
48 |
xScalePixelsToUnits(0), yScalePixelsToUnits(0), |
|
49 |
upem(theUPEM), layoutTables(ltables) |
|
50 |
{ |
|
51 |
xPointSize = euclidianDistance(matrix[0], matrix[1]); |
|
52 |
yPointSize = euclidianDistance(matrix[2], matrix[3]); |
|
53 |
||
54 |
txMat[0] = matrix[0]/xPointSize; |
|
55 |
txMat[1] = matrix[1]/xPointSize; |
|
56 |
txMat[2] = matrix[2]/yPointSize; |
|
57 |
txMat[3] = matrix[3]/yPointSize; |
|
58 |
||
59 |
xppem = ((float) xRes / 72) * xPointSize; |
|
60 |
yppem = ((float) yRes / 72) * yPointSize; |
|
61 |
||
62 |
xScaleUnitsToPoints = xPointSize / upem; |
|
63 |
yScaleUnitsToPoints = yPointSize / upem; |
|
64 |
||
65 |
xScalePixelsToUnits = upem / xppem; |
|
66 |
yScalePixelsToUnits = upem / yppem; |
|
67 |
}; |
|
68 |
||
69 |
const void *FontInstanceAdapter::getFontTable(LETag tableTag) const |
|
70 |
{ |
|
71 |
if (!layoutTables) { // t1 font |
|
72 |
return 0; |
|
73 |
} |
|
74 |
||
75 |
// cache in font's pscaler object |
|
76 |
// font disposer will handle for us |
|
77 |
||
78 |
switch(tableTag) { |
|
79 |
case GSUB_TAG: if (layoutTables->gsub_len != -1) return (void*)layoutTables->gsub; break; |
|
80 |
case GPOS_TAG: if (layoutTables->gpos_len != -1) return (void*)layoutTables->gpos; break; |
|
81 |
case GDEF_TAG: if (layoutTables->gdef_len != -1) return (void*)layoutTables->gdef; break; |
|
82 |
case MORT_TAG: if (layoutTables->mort_len != -1) return (void*)layoutTables->mort; break; |
|
83 |
case KERN_TAG: if (layoutTables->kern_len != -1) return (void*)layoutTables->kern; break; |
|
84 |
default: |
|
85 |
//fprintf(stderr, "unexpected table request from font instance adapter: %x\n", tableTag); |
|
86 |
return 0; |
|
87 |
} |
|
88 |
||
89 |
jbyte* result = 0; |
|
90 |
jsize len = 0; |
|
91 |
jbyteArray tableBytes = (jbyteArray) |
|
92 |
env->CallObjectMethod(font2D, sunFontIDs.getTableBytesMID, tableTag); |
|
93 |
if (!IS_NULL(tableBytes)) { |
|
94 |
len = env->GetArrayLength(tableBytes); |
|
95 |
result = new jbyte[len]; |
|
96 |
env->GetByteArrayRegion(tableBytes, 0, len, result); |
|
97 |
} |
|
98 |
||
99 |
switch(tableTag) { |
|
100 |
case GSUB_TAG: layoutTables->gsub = (void*)result; layoutTables->gsub_len = len; break; |
|
101 |
case GPOS_TAG: layoutTables->gpos = (void*)result; layoutTables->gpos_len = len; break; |
|
102 |
case GDEF_TAG: layoutTables->gdef = (void*)result; layoutTables->gdef_len = len; break; |
|
103 |
case MORT_TAG: layoutTables->mort = (void*)result; layoutTables->mort_len = len; break; |
|
104 |
case KERN_TAG: layoutTables->kern = (void*)result; layoutTables->kern_len = len; break; |
|
105 |
default: break; |
|
106 |
} |
|
107 |
||
108 |
return (void*)result; |
|
109 |
}; |
|
110 |
||
111 |
LEGlyphID FontInstanceAdapter::mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const |
|
112 |
{ |
|
113 |
LEUnicode32 mappedChar = mapper->mapChar(ch); |
|
114 |
||
115 |
if (mappedChar == 0xFFFF || mappedChar == 0xFFFE) { |
|
116 |
return 0xFFFF; |
|
117 |
} |
|
118 |
||
119 |
if (mappedChar == 0x200C || mappedChar == 0x200D) { |
|
120 |
return 1; |
|
121 |
} |
|
122 |
||
123 |
LEGlyphID id = (LEGlyphID)env->CallIntMethod(font2D, sunFontIDs.f2dCharToGlyphMID, (jint)mappedChar); |
|
124 |
return id; |
|
125 |
} |
|
126 |
||
127 |
LEGlyphID FontInstanceAdapter::mapCharToGlyph(LEUnicode32 ch) const |
|
128 |
{ |
|
129 |
LEGlyphID id = (LEGlyphID)env->CallIntMethod(font2D, sunFontIDs.f2dCharToGlyphMID, ch); |
|
130 |
return id; |
|
131 |
} |
|
132 |
||
133 |
void FontInstanceAdapter::mapCharsToWideGlyphs(const LEUnicode chars[], |
|
134 |
le_int32 offset, le_int32 count, le_bool reverse, |
|
135 |
const LECharMapper *mapper, le_uint32 glyphs[]) const |
|
136 |
{ |
|
137 |
le_int32 i, out = 0, dir = 1; |
|
138 |
||
139 |
if (reverse) { |
|
140 |
out = count - 1; |
|
141 |
dir = -1; |
|
142 |
} |
|
143 |
||
144 |
for (i = offset; i < offset + count; i += 1, out += dir) { |
|
145 |
LEUnicode16 high = chars[i]; |
|
146 |
LEUnicode32 code = high; |
|
147 |
||
148 |
if (i < offset + count - 1 && high >= 0xD800 && high <= 0xDBFF) { |
|
149 |
LEUnicode16 low = chars[i + 1]; |
|
150 |
||
151 |
if (low >= 0xDC00 && low <= 0xDFFF) { |
|
152 |
code = (high - 0xD800) * 0x400 + low - 0xDC00 + 0x10000; |
|
153 |
} |
|
154 |
} |
|
155 |
||
156 |
glyphs[out] = mapCharToWideGlyph(code, mapper); |
|
157 |
||
158 |
if (code >= 0x10000) { |
|
159 |
i += 1; |
|
160 |
glyphs[out += dir] = 0xFFFF; |
|
161 |
} |
|
162 |
} |
|
163 |
} |
|
164 |
||
165 |
le_uint32 FontInstanceAdapter::mapCharToWideGlyph(LEUnicode32 ch, const LECharMapper *mapper) const |
|
166 |
{ |
|
167 |
LEUnicode32 mappedChar = mapper->mapChar(ch); |
|
168 |
||
169 |
if (mappedChar == 0xFFFF) { |
|
170 |
return 0xFFFF; |
|
171 |
} |
|
172 |
||
173 |
if (mappedChar == 0x200C || mappedChar == 0x200D) { |
|
174 |
return 1; |
|
175 |
} |
|
176 |
||
177 |
return (LEGlyphID)env->CallIntMethod(font2D, sunFontIDs.charToGlyphMID, |
|
178 |
mappedChar); |
|
179 |
} |
|
180 |
||
181 |
void FontInstanceAdapter::getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const |
|
182 |
{ |
|
183 |
getWideGlyphAdvance((le_uint32)glyph, advance); |
|
184 |
} |
|
185 |
||
186 |
void FontInstanceAdapter::getKerningAdjustment(LEPoint &adjustment) const |
|
187 |
{ |
|
188 |
float xx, xy, yx, yy; |
|
189 |
le_bool isIdentityMatrix; |
|
190 |
||
191 |
isIdentityMatrix = (txMat[0] == 1 && txMat[1] == 0 && |
|
192 |
txMat[2] == 0 && txMat[3] == 1); |
|
193 |
||
194 |
if (!isIdentityMatrix) { |
|
195 |
xx = adjustment.fX; |
|
196 |
xy = xx * txMat[1]; |
|
197 |
xx = xx * txMat[0]; |
|
198 |
||
199 |
yy = adjustment.fY; |
|
200 |
yx = yy * txMat[2]; |
|
201 |
yy = yy * txMat[3]; |
|
202 |
||
203 |
adjustment.fX = xx + yx; |
|
204 |
adjustment.fY = xy + yy; |
|
205 |
} |
|
206 |
||
207 |
jobject pt = env->NewObject(sunFontIDs.pt2DFloatClass, |
|
208 |
sunFontIDs.pt2DFloatCtr, |
|
209 |
adjustment.fX, adjustment.fY); |
|
210 |
env->CallObjectMethod(fontStrike, sunFontIDs.adjustPointMID, pt); |
|
211 |
adjustment.fX = env->GetFloatField(pt, sunFontIDs.xFID); |
|
212 |
adjustment.fY = env->GetFloatField(pt, sunFontIDs.yFID); |
|
213 |
} |
|
214 |
||
215 |
void FontInstanceAdapter::getWideGlyphAdvance(le_uint32 glyph, LEPoint &advance) const |
|
216 |
{ |
|
217 |
if ((glyph & 0xfffe) == 0xfffe) { |
|
218 |
advance.fX = 0; |
|
219 |
advance.fY = 0; |
|
220 |
return; |
|
221 |
} |
|
222 |
jobject pt = env->CallObjectMethod(fontStrike, |
|
223 |
sunFontIDs.getGlyphMetricsMID, glyph); |
|
224 |
if (pt != NULL) { |
|
225 |
advance.fX = env->GetFloatField(pt, sunFontIDs.xFID); |
|
226 |
advance.fY = env->GetFloatField(pt, sunFontIDs.yFID); |
|
7936
4d5f799d3734
6951086: Excessive Local References in sun.font.SunLayoutEngine.nativeLayout
prr
parents:
5506
diff
changeset
|
227 |
env->DeleteLocalRef(pt); |
2 | 228 |
} |
229 |
} |
|
230 |
||
231 |
le_bool FontInstanceAdapter::getGlyphPoint(LEGlyphID glyph, |
|
232 |
le_int32 pointNumber, |
|
233 |
LEPoint &point) const |
|
234 |
{ |
|
235 |
/* This upcall is not ideal, since it will make another down call. |
|
236 |
* The intention is to move up some of this code into Java. But |
|
237 |
* a HashMap has been added to the Java PhysicalStrike object to cache |
|
238 |
* these points so that they don't need to be repeatedly recalculated |
|
239 |
* which is expensive as it needs the font scaler to re-generate the |
|
240 |
* hinted glyph outline. This turns out to be a huge win over 1.4.x |
|
241 |
*/ |
|
242 |
jobject pt = env->CallObjectMethod(fontStrike, |
|
243 |
sunFontIDs.getGlyphPointMID, |
|
244 |
glyph, pointNumber); |
|
245 |
if (pt != NULL) { |
|
246 |
/* point is a java.awt.geom.Point2D.Float */ |
|
247 |
point.fX = env->GetFloatField(pt, sunFontIDs.xFID); |
|
248 |
/* convert from java coordinate system to internal '+y up' coordinate system */ |
|
249 |
point.fY = -env->GetFloatField(pt, sunFontIDs.yFID); |
|
250 |
return true; |
|
251 |
} else { |
|
252 |
return false; |
|
253 |
} |
|
254 |
} |
|
255 |
||
256 |
void FontInstanceAdapter::transformFunits(float xFunits, float yFunits, LEPoint &pixels) const |
|
257 |
{ |
|
258 |
float xx, xy, yx, yy; |
|
259 |
le_bool isIdentityMatrix; |
|
260 |
||
261 |
isIdentityMatrix = (txMat[0] == 1 && txMat[1] == 0 && |
|
262 |
txMat[2] == 0 && txMat[3] == 1); |
|
263 |
||
264 |
xx = xFunits * xScaleUnitsToPoints; |
|
265 |
xy = 0; |
|
266 |
if (!isIdentityMatrix) { |
|
267 |
xy = xx * txMat[1]; |
|
268 |
xx = xx * txMat[0]; |
|
269 |
}; |
|
270 |
||
271 |
yx = 0; |
|
272 |
yy = yFunits * yScaleUnitsToPoints; |
|
273 |
if (!isIdentityMatrix) { |
|
274 |
yx = yy * txMat[2]; |
|
275 |
yy = yy * txMat[3]; |
|
276 |
}; |
|
277 |
pixels.fX = xx + yx; |
|
278 |
pixels.fY = xy + yy; |
|
279 |
} |
|
280 |
||
281 |
||
282 |
float FontInstanceAdapter::euclidianDistance(float a, float b) |
|
283 |
{ |
|
284 |
if (a < 0) { |
|
285 |
a = -a; |
|
286 |
} |
|
287 |
||
288 |
if (b < 0) { |
|
289 |
b = -b; |
|
290 |
} |
|
291 |
||
292 |
if (a == 0) { |
|
293 |
return b; |
|
294 |
} |
|
295 |
||
296 |
if (b == 0) { |
|
297 |
return a; |
|
298 |
} |
|
299 |
||
300 |
float root = a > b ? a + (b / 2) : b + (a / 2); /* Do an initial approximation, in root */ |
|
301 |
||
302 |
/* An unrolled Newton-Raphson iteration sequence */ |
|
303 |
root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2; |
|
304 |
root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2; |
|
305 |
root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2; |
|
306 |
||
307 |
return root; |
|
308 |
} |