1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
/*
* Copyright 2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.java2d.jules;
import java.awt.*;
import java.awt.geom.*;
import sun.awt.X11GraphicsEnvironment;
import sun.java2d.pipe.*;
import sun.java2d.xr.*;
public class JulesPathBuf {
static final double[] emptyDash = new double[0];
private static final byte CAIRO_PATH_OP_MOVE_TO = 0;
private static final byte CAIRO_PATH_OP_LINE_TO = 1;
private static final byte CAIRO_PATH_OP_CURVE_TO = 2;
private static final byte CAIRO_PATH_OP_CLOSE_PATH = 3;
private static final int CAIRO_FILL_RULE_WINDING = 0;
private static final int CAIRO_FILL_RULE_EVEN_ODD = 1;
GrowablePointArray points = new GrowablePointArray(128);
GrowableByteArray ops = new GrowableByteArray(1, 128);
int[] xTrapArray = new int[512];
private static final boolean isCairoAvailable;
static {
isCairoAvailable =
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<Boolean>() {
public Boolean run() {
boolean loadSuccess = false;
if (X11GraphicsEnvironment.isXRenderAvailable()) {
try {
System.loadLibrary("jules");
loadSuccess = true;
if (X11GraphicsEnvironment.isXRenderVerbose()) {
System.out.println(
"Xrender: INFO: Jules library loaded");
}
} catch (UnsatisfiedLinkError ex) {
loadSuccess = false;
if (X11GraphicsEnvironment.isXRenderVerbose()) {
System.out.println(
"Xrender: INFO: Jules library not installed.");
}
}
}
return Boolean.valueOf(loadSuccess);
}
});
}
public static boolean isCairoAvailable() {
return isCairoAvailable;
}
public TrapezoidList tesselateFill(Shape s, AffineTransform at, Region clip) {
int windingRule = convertPathData(s, at);
xTrapArray[0] = 0;
xTrapArray = tesselateFillNative(points.getArray(), ops.getArray(),
points.getSize(), ops.getSize(),
xTrapArray, xTrapArray.length,
getCairoWindingRule(windingRule),
clip.getLoX(), clip.getLoY(),
clip.getHiX(), clip.getHiY());
return new TrapezoidList(xTrapArray);
}
public TrapezoidList tesselateStroke(Shape s, BasicStroke bs, boolean thin,
boolean adjust, boolean antialias,
AffineTransform at, Region clip) {
float lw;
if (thin) {
if (antialias) {
lw = 0.5f;
} else {
lw = 1.0f;
}
} else {
lw = bs.getLineWidth();
}
convertPathData(s, at);
double[] dashArray = floatToDoubleArray(bs.getDashArray());
xTrapArray[0] = 0;
xTrapArray =
tesselateStrokeNative(points.getArray(), ops.getArray(),
points.getSize(), ops.getSize(),
xTrapArray, xTrapArray.length, lw,
bs.getEndCap(), bs.getLineJoin(),
bs.getMiterLimit(), dashArray,
dashArray.length, bs.getDashPhase(),
1, 0, 0, 0, 1, 0,
clip.getLoX(), clip.getLoY(),
clip.getHiX(), clip.getHiY());
return new TrapezoidList(xTrapArray);
}
protected double[] floatToDoubleArray(float[] dashArrayFloat) {
double[] dashArrayDouble = emptyDash;
if (dashArrayFloat != null) {
dashArrayDouble = new double[dashArrayFloat.length];
for (int i = 0; i < dashArrayFloat.length; i++) {
dashArrayDouble[i] = dashArrayFloat[i];
}
}
return dashArrayDouble;
}
protected int convertPathData(Shape s, AffineTransform at) {
PathIterator pi = s.getPathIterator(at);
double[] coords = new double[6];
double currX = 0;
double currY = 0;
while (!pi.isDone()) {
int curOp = pi.currentSegment(coords);
int pointIndex;
switch (curOp) {
case PathIterator.SEG_MOVETO:
ops.addByte(CAIRO_PATH_OP_MOVE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
currX = coords[0];
currY = coords[1];
break;
case PathIterator.SEG_LINETO:
ops.addByte(CAIRO_PATH_OP_LINE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
currX = coords[0];
currY = coords[1];
break;
/**
* q0 = p0
* q1 = (p0+2*p1)/3
* q2 = (p2+2*p1)/3
* q3 = p2
*/
case PathIterator.SEG_QUADTO:
double x1 = coords[0];
double y1 = coords[1];
double x2, y2;
double x3 = coords[2];
double y3 = coords[3];
x2 = x1 + (x3 - x1) / 3;
y2 = y1 + (y3 - y1) / 3;
x1 = currX + 2 * (x1 - currX) / 3;
y1 =currY + 2 * (y1 - currY) / 3;
ops.addByte(CAIRO_PATH_OP_CURVE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(x1));
points.setY(pointIndex, DoubleToCairoFixed(y1));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(x2));
points.setY(pointIndex, DoubleToCairoFixed(y2));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(x3));
points.setY(pointIndex, DoubleToCairoFixed(y3));
currX = x3;
currY = y3;
break;
case PathIterator.SEG_CUBICTO:
ops.addByte(CAIRO_PATH_OP_CURVE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[2]));
points.setY(pointIndex, DoubleToCairoFixed(coords[3]));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[4]));
points.setY(pointIndex, DoubleToCairoFixed(coords[5]));
currX = coords[4];
currY = coords[5];
break;
case PathIterator.SEG_CLOSE:
ops.addByte(CAIRO_PATH_OP_CLOSE_PATH);
break;
}
pi.next();
}
return pi.getWindingRule();
}
private static native int[]
tesselateStrokeNative(int[] pointArray, byte[] ops,
int pointCnt, int opCnt,
int[] xTrapArray, int xTrapArrayLength,
double lineWidth, int lineCap, int lineJoin,
double miterLimit, double[] dashArray,
int dashCnt, double offset,
double m00, double m01, double m02,
double m10, double m11, double m12,
int clipLowX, int clipLowY,
int clipWidth, int clipHeight);
private static native int[]
tesselateFillNative(int[] pointArray, byte[] ops, int pointCnt,
int opCnt, int[] xTrapArray, int xTrapArrayLength,
int windingRule, int clipLowX, int clipLowY, int clipWidth, int clipHeight);
public void clear() {
points.clear();
ops.clear();
xTrapArray[0] = 0;
}
private static int DoubleToCairoFixed(double dbl) {
return (int) (dbl * 256);
}
private static int getCairoWindingRule(int j2dWindingRule) {
switch(j2dWindingRule) {
case PathIterator.WIND_EVEN_ODD:
return CAIRO_FILL_RULE_EVEN_ODD;
case PathIterator.WIND_NON_ZERO:
return CAIRO_FILL_RULE_WINDING;
default:
throw new IllegalArgumentException("Illegal Java2D winding rule specified");
}
}
}
|
