1 /*
2 * Copyright (c) 2010, 2017, Oracle and/or its affiliates. All rights reserved.
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
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
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 *
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.
24 */
25
26 package com.sun.prism.impl.shape;
27
28 import com.sun.javafx.geom.Path2D;
29 import com.sun.javafx.geom.RectBounds;
30 import com.sun.javafx.geom.Rectangle;
31 import com.sun.javafx.geom.Shape;
32 import com.sun.javafx.geom.transform.BaseTransform;
33 import com.sun.marlin.MarlinRenderer;
34 import com.sun.marlin.MarlinRenderingEngine;
35 import com.sun.marlin.MaskMarlinAlphaConsumer;
36 import com.sun.marlin.RendererContext;
37 import com.sun.prism.BasicStroke;
38 import com.sun.prism.impl.PrismSettings;
39
40 /**
41 * Thread-safe Marlin rasterizer (TL or CLQ storage)
42 */
43 public final class MarlinRasterizer implements ShapeRasterizer {
44 private static final MaskData EMPTY_MASK = MaskData.create(new byte[1], 0, 0, 1, 1);
45
46 @Override
47 public MaskData getMaskData(Shape shape,
48 BasicStroke stroke,
49 RectBounds xformBounds,
50 BaseTransform xform,
51 boolean close, boolean antialiasedShape)
52 {
53 if (stroke != null && stroke.getType() != BasicStroke.TYPE_CENTERED) {
54 // RT-27427
55 // TODO: Optimize the combinatorial strokes for simple
56 // shapes and/or teach the rasterizer to be able to
57 // do a "differential fill" between two shapes.
58 // Note that most simple shapes will use a more optimized path
59 // than this method for the INNER/OUTER strokes anyway.
60 shape = stroke.createStrokedShape(shape);
61 stroke = null;
62 }
63 if (xformBounds == null) {
64 if (stroke != null) {
65 // Note that all places that pass null for xformbounds also
66 // pass null for stroke so that the following is not typically
67 // executed, but just here as a safety net.
68 shape = stroke.createStrokedShape(shape);
69 stroke = null;
70 }
71
72 xformBounds = new RectBounds();
73 //TODO: Need to verify that this is a safe cast ... (RT-27427)
74 xformBounds = (RectBounds) xform.transform(shape.getBounds(), xformBounds);
75 }
76 if (xformBounds.isEmpty()) {
77 return EMPTY_MASK;
78 }
79
80 final RendererContext rdrCtx = MarlinRenderingEngine.getRendererContext();
81 MarlinRenderer renderer = null;
82 try {
83 final Rectangle rclip = rdrCtx.clip;
84 rclip.setBounds(xformBounds);
85
86 renderer = MarlinPrismUtils.setupRenderer(rdrCtx, shape, stroke, xform, rclip,
87 antialiasedShape);
88
89 final int outpix_xmin = renderer.getOutpixMinX();
90 final int outpix_xmax = renderer.getOutpixMaxX();
91 final int outpix_ymin = renderer.getOutpixMinY();
92 final int outpix_ymax = renderer.getOutpixMaxY();
93 final int w = outpix_xmax - outpix_xmin;
94 final int h = outpix_ymax - outpix_ymin;
95 if ((w <= 0) || (h <= 0)) {
96 return EMPTY_MASK;
97 }
98
99 MaskMarlinAlphaConsumer consumer = rdrCtx.consumer;
100 if (consumer == null || (w * h) > consumer.getAlphaLength()) {
101 final int csize = (w * h + 0xfff) & (~0xfff);
102 rdrCtx.consumer = consumer = new MaskMarlinAlphaConsumer(csize);
103 if (PrismSettings.verbose) {
104 System.out.println("new alphas with length = " + csize);
105 }
106 }
107 consumer.setBoundsNoClone(outpix_xmin, outpix_ymin, w, h);
108 renderer.produceAlphas(consumer);
109
110 return consumer.getMaskData();
111 } finally {
112 if (renderer != null) {
113 renderer.dispose();
114 }
115 // recycle the RendererContext instance
116 MarlinRenderingEngine.returnRendererContext(rdrCtx);
117 }
118 }
119
120 static Shape createCenteredStrokedShape(Shape s, BasicStroke stroke)
121 {
122 final float lw = (stroke.getType() == BasicStroke.TYPE_CENTERED) ?
123 stroke.getLineWidth() : stroke.getLineWidth() * 2.0f;
124
125 final RendererContext rdrCtx = MarlinRenderingEngine.getRendererContext();
126 try {
127 // initialize a large copyable Path2D to avoid a lot of array growing:
128 final Path2D p2d = rdrCtx.getPath2D();
129
130 MarlinPrismUtils.strokeTo(rdrCtx, s, stroke, lw,
131 rdrCtx.transformerPC2D.wrapPath2d(p2d)
132 );
133
134 // Use Path2D copy constructor (trim)
135 return new Path2D(p2d);
136
137 } finally {
138 // recycle the RendererContext instance
139 MarlinRenderingEngine.returnRendererContext(rdrCtx);
140 }
141 }
142 }