1 /*
2 * Copyright (c) 1997, 2018, 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 sun.java2d.pipe;
27
28 import java.awt.Color;
29 import java.awt.Image;
30 import java.awt.Shape;
31 import java.awt.geom.AffineTransform;
32 import java.awt.image.BufferedImage;
33 import java.awt.image.BufferedImageOp;
34 import java.awt.image.ImageObserver;
35 import java.awt.font.GlyphVector;
36 import sun.java2d.SunGraphics2D;
37
38 /**
39 * This is a class that implements all of the basic pixel rendering
40 * methods as NOPs.
41 * This class is useful for installing as the pipeline when the
42 * clip is determined to be empty or when the composite operation is
43 * determined to have no effect (i.e. rule == SRC_OVER, extraAlpha == 0.0).
44 */
45 public class NullPipe
46 implements PixelDrawPipe, PixelFillPipe, ShapeDrawPipe, TextPipe,
47 DrawImagePipe
48 {
49 public void drawLine(SunGraphics2D sg,
50 int x1, int y1, int x2, int y2) {
51 }
52
53 public void drawRect(SunGraphics2D sg,
54 int x, int y, int width, int height) {
55 }
56
57 public void fillRect(SunGraphics2D sg,
58 int x, int y, int width, int height) {
59 }
60
61 public void drawRoundRect(SunGraphics2D sg,
62 int x, int y, int width, int height,
63 int arcWidth, int arcHeight) {
64 }
65
66 public void fillRoundRect(SunGraphics2D sg,
67 int x, int y, int width, int height,
68 int arcWidth, int arcHeight) {
69 }
70
71 public void drawOval(SunGraphics2D sg,
72 int x, int y, int width, int height) {
73 }
74
75 public void fillOval(SunGraphics2D sg,
76 int x, int y, int width, int height) {
77 }
78
79 public void drawArc(SunGraphics2D sg,
80 int x, int y, int width, int height,
81 int startAngle, int arcAngle) {
82 }
83
84 public void fillArc(SunGraphics2D sg,
85 int x, int y, int width, int height,
86 int startAngle, int arcAngle) {
87 }
88
89 public void drawPolyline(SunGraphics2D sg,
90 int[] xPoints, int[] yPoints,
91 int nPoints) {
92 }
93
94 public void drawPolygon(SunGraphics2D sg,
95 int[] xPoints, int[] yPoints,
96 int nPoints) {
97 }
98
99 public void fillPolygon(SunGraphics2D sg,
100 int[] xPoints, int[] yPoints,
101 int nPoints) {
102 }
103
104 public void draw(SunGraphics2D sg, Shape s) {
105 }
106
107 public void fill(SunGraphics2D sg, Shape s) {
108 }
109
110 public void drawString(SunGraphics2D sg, String s, double x, double y) {
111 }
112
113 public void drawGlyphVector(SunGraphics2D sg, GlyphVector g,
114 float x, float y) {
115 }
116
117 public void drawChars(SunGraphics2D sg,
118 char[] data, int offset, int length,
119 int x, int y) {
120 }
121
122 public boolean copyImage(SunGraphics2D sg, Image img,
123 int x, int y,
124 Color bgColor,
125 ImageObserver observer) {
126 return false;
127 }
128 public boolean copyImage(SunGraphics2D sg, Image img,
129 int dx, int dy, int sx, int sy, int w, int h,
130 Color bgColor,
131 ImageObserver observer) {
132 return false;
133 }
134 public boolean scaleImage(SunGraphics2D sg, Image img, int x, int y,
135 int w, int h,
136 Color bgColor,
137 ImageObserver observer) {
138 return false;
139 }
140 public boolean scaleImage(SunGraphics2D sg, Image img,
141 int dx1, int dy1, int dx2, int dy2,
142 int sx1, int sy1, int sx2, int sy2,
143 Color bgColor,
144 ImageObserver observer) {
145 return false;
146 }
147 public boolean transformImage(SunGraphics2D sg, Image img,
148 AffineTransform atfm,
149 ImageObserver observer) {
150 return false;
151 }
152 public void transformImage(SunGraphics2D sg, BufferedImage img,
153 BufferedImageOp op, int x, int y) {
154 }
155 }