1 /*
2 * Copyright (c) 2010, 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.xr;
27
28 import java.awt.*;
29 import java.awt.MultipleGradientPaint.*;
30 import java.awt.geom.*;
31 import java.awt.image.*;
32
33 import sun.java2d.*;
34 import sun.java2d.loops.*;
35 import sun.java2d.pipe.*;
36
37 abstract class XRPaints {
38 static XRCompositeManager xrCompMan;
39
40 static final XRGradient xrGradient = new XRGradient();
41 static final XRLinearGradient xrLinearGradient = new XRLinearGradient();
42 static final XRRadialGradient xrRadialGradient = new XRRadialGradient();
43 static final XRTexture xrTexture = new XRTexture();
44
45 public static void register(XRCompositeManager xrComp) {
46 xrCompMan = xrComp;
47 }
48
49 private static XRPaints getXRPaint(SunGraphics2D sg2d) {
50 switch (sg2d.paintState) {
51 case SunGraphics2D.PAINT_GRADIENT:
52 return xrGradient;
53
54 case SunGraphics2D.PAINT_LIN_GRADIENT:
55 return xrLinearGradient;
56
57 case SunGraphics2D.PAINT_RAD_GRADIENT:
58 return xrRadialGradient;
59
60 case SunGraphics2D.PAINT_TEXTURE:
61 return xrTexture;
62
63 default:
64 return null;
65 }
66 }
67
68 /**
69 * Attempts to locate an implementation corresponding to the paint state of
70 * the provided SunGraphics2D object. If no implementation can be found, or
71 * if the paint cannot be accelerated under the conditions of the
72 * SunGraphics2D, this method returns false; otherwise, returns true.
73 */
74 static boolean isValid(SunGraphics2D sg2d) {
75 XRPaints impl = getXRPaint(sg2d);
76 return (impl != null && impl.isPaintValid(sg2d));
77 }
78
79 static void setPaint(SunGraphics2D sg2d, Paint paint) {
80 XRPaints impl = getXRPaint(sg2d);
81 if (impl != null) {
82 impl.setXRPaint(sg2d, paint);
83 }
84 }
85
86 /**
87 * Returns true if this implementation is able to accelerate the Paint
88 * object associated with, and under the conditions of, the provided
89 * SunGraphics2D instance; otherwise returns false.
90 */
91 abstract boolean isPaintValid(SunGraphics2D sg2d);
92
93 abstract void setXRPaint(SunGraphics2D sg2d, Paint paint);
94
95 private static class XRGradient extends XRPaints {
96 private XRGradient() {
97 }
98
99 /**
100 * There are no restrictions for accelerating GradientPaint, so this
101 * method always returns true.
102 */
103 @Override
104 boolean isPaintValid(SunGraphics2D sg2d) {
105 return true;
106 }
107
108 void setXRPaint(SunGraphics2D sg2d, Paint pt) {
109 GradientPaint paint = (GradientPaint) pt;
110
111 int[] pixels = convertToIntArgbPixels(new Color[] { paint.getColor1(), paint.getColor2() }, false);
112
113 float fractions[] = new float[2];
114 fractions[0] = 0;
115 fractions[1] = 1;
116
117 Point2D pt1 = paint.getPoint1();
118 Point2D pt2 = paint.getPoint2();
119
120 AffineTransform at = (AffineTransform) sg2d.transform.clone();
121 try {
122 at.invert();
123 } catch (NoninvertibleTransformException ex) {
124 at.setToIdentity();
125 }
126
127 int repeat = paint.isCyclic() ? XRUtils.RepeatReflect : XRUtils.RepeatPad;
128
129 XRBackend con = xrCompMan.getBackend();
130 int gradient = con.createLinearGradient(pt1, pt2, fractions, pixels, repeat, at);
131 xrCompMan.setGradientPaint(new XRSurfaceData.XRInternalSurfaceData(con, gradient, at));
132 }
133 }
134
135 public int getGradientLength(Point2D pt1, Point2D pt2) {
136 double xDiff = Math.max(pt1.getX(), pt2.getX()) - Math.min(pt1.getX(), pt2.getX());
137 double yDiff = Math.max(pt1.getY(), pt2.getY()) - Math.min(pt1.getY(), pt2.getY());
138 return (int) Math.ceil(Math.sqrt(xDiff*xDiff + yDiff*yDiff));
139 }
140
141 private static class XRLinearGradient extends XRPaints {
142
143 @Override
144 boolean isPaintValid(SunGraphics2D sg2d) {
145 return true;
146 }
147
148 @Override
149 void setXRPaint(SunGraphics2D sg2d, Paint pt) {
150 LinearGradientPaint paint = (LinearGradientPaint) pt;
151 boolean linear = (paint.getColorSpace() == ColorSpaceType.LINEAR_RGB);
152
153 Color[] colors = paint.getColors();
154 Point2D pt1 = paint.getStartPoint();
155 Point2D pt2 = paint.getEndPoint();
156
157
158 AffineTransform at = paint.getTransform();
159 at.preConcatenate(sg2d.transform);
160
161 int repeat = XRUtils.getRepeatForCycleMethod(paint.getCycleMethod());
162 float[] fractions = paint.getFractions();
163 int[] pixels = convertToIntArgbPixels(colors, linear);
164
165 try {
166 at.invert();
167 } catch (NoninvertibleTransformException ex) {
168 ex.printStackTrace();
169 }
170
171 XRBackend con = xrCompMan.getBackend();
172 int gradient = con.createLinearGradient(pt1, pt2, fractions, pixels, repeat, at);
173 xrCompMan.setGradientPaint(new XRSurfaceData.XRInternalSurfaceData(con, gradient, at));
174 }
175 }
176
177 private static class XRRadialGradient extends XRPaints {
178
179 @Override
180 boolean isPaintValid(SunGraphics2D sg2d) {
181 RadialGradientPaint grad = (RadialGradientPaint) sg2d.paint;
182 return grad.getFocusPoint().equals(grad.getCenterPoint());
183 }
184
185 @Override
186 void setXRPaint(SunGraphics2D sg2d, Paint pt) {
187 RadialGradientPaint paint = (RadialGradientPaint) pt;
188 boolean linear = (paint.getColorSpace() == ColorSpaceType.LINEAR_RGB);
189 Color[] colors = paint.getColors();
190 Point2D center = paint.getCenterPoint();
191 Point2D focus = paint.getFocusPoint();
192
193 int repeat = XRUtils.getRepeatForCycleMethod(paint.getCycleMethod());
194 float[] fractions = paint.getFractions();
195 int[] pixels = convertToIntArgbPixels(colors, linear);
196 float radius = paint.getRadius();
197
198 // save original (untransformed) center and focus points
199 double cx = center.getX();
200 double cy = center.getY();
201 double fx = focus.getX();
202 double fy = focus.getY();
203
204 AffineTransform at = paint.getTransform();
205 at.preConcatenate(sg2d.transform);
206 focus = at.transform(focus, focus);
207
208 // transform unit circle to gradient coords; we start with the
209 // unit circle (center=(0,0), focus on positive x-axis, radius=1)
210 // and then transform into gradient space
211 at.translate(cx, cy);
212 at.rotate(fx - cx, fy - cy);
213 // at.scale(radius, radius);
214
215 // invert to get mapping from device coords to unit circle
216 try {
217 at.invert();
218 } catch (Exception e) {
219 at.setToScale(0.0, 0.0);
220 }
221 focus = at.transform(focus, focus);
222
223 // clamp the focus point so that it does not rest on, or outside
224 // of, the circumference of the gradient circle
225 fx = Math.min(focus.getX(), 0.99);
226
227 XRBackend con = xrCompMan.getBackend();
228 int gradient = con.createRadialGradient(new Point2D.Float(0, 0), new Point2D.Float(0, 0), 0, radius, fractions, pixels, repeat, at);
229 xrCompMan.setGradientPaint(new XRSurfaceData.XRInternalSurfaceData(con, gradient, at));
230 }
231 }
232
233 private static class XRTexture extends XRPaints {
234
235 @Override
236 boolean isPaintValid(SunGraphics2D sg2d) {
237 TexturePaint paint = (TexturePaint) sg2d.paint;
238 BufferedImage bi = paint.getImage();
239 XRSurfaceData dstData = (XRSurfaceData) sg2d.getDestSurface();
240
241 SurfaceData srcData = dstData.getSourceSurfaceData(bi, SunGraphics2D.TRANSFORM_ISIDENT, CompositeType.SrcOver, null);
242 if (!(srcData instanceof XRSurfaceData)) {
243 // REMIND: this is a hack that attempts to cache the system
244 // memory image from the TexturePaint instance into an
245 // OpenGL texture...
246 srcData = dstData.getSourceSurfaceData(bi, SunGraphics2D.TRANSFORM_ISIDENT, CompositeType.SrcOver, null);
247 if (!(srcData instanceof XRSurfaceData)) {
248 return false;
249 }
250 }
251
252 return true;
253 }
254
255 @Override
256 void setXRPaint(SunGraphics2D sg2d, Paint pt) {
257 TexturePaint paint = (TexturePaint) pt;
258
259 BufferedImage bi = paint.getImage();
260 SurfaceData dstData = sg2d.surfaceData;
261 SurfaceData srcData = dstData.getSourceSurfaceData(bi, SunGraphics2D.TRANSFORM_ISIDENT, CompositeType.SrcOver, null);
262
263 // REMIND: this hack tries to ensure that we have a cached texture
264 if (!(srcData instanceof XRSurfaceData)) {
265 srcData = dstData.getSourceSurfaceData(paint.getImage(), SunGraphics2D.TRANSFORM_ISIDENT, CompositeType.SrcOver, null);
266 if (!(srcData instanceof XRSurfaceData)) {
267 throw new InternalError("Surface not cachable");
268 }
269 }
270
271 XRSurfaceData x11SrcData = (XRSurfaceData) srcData;
272
273 AffineTransform at = (AffineTransform) sg2d.transform.clone();
274 Rectangle2D anchor = paint.getAnchorRect();
275 at.translate(anchor.getX(), anchor.getY());
276 at.scale(anchor.getWidth() / ((double) bi.getWidth()), anchor.getHeight() / ((double) bi.getHeight()));
277
278 try {
279 at.invert();
280 } catch (NoninvertibleTransformException ex) {
281 at.setToIdentity(); /* TODO: Right thing to do in this case? */
282 }
283
284 x11SrcData.validateAsSource(at, XRUtils.RepeatNormal, XRUtils.ATransOpToXRQuality(sg2d.interpolationType));
285 xrCompMan.setTexturePaint(((XRSurfaceData) srcData));
286 }
287 }
288
289 public int[] convertToIntArgbPixels(Color[] colors, boolean linear) {
290 int[] pixels = new int[colors.length];
291 for (int i = 0; i < colors.length; i++) {
292 pixels[i] = colorToIntArgbPixel(colors[i], linear);
293 }
294 return pixels;
295 }
296
297 public int colorToIntArgbPixel(Color c, boolean linear) {
298 int rgb = c.getRGB();
299
300 int a = rgb >>> 24;
301 int r = (rgb >> 16) & 0xff;
302 int g = (rgb >> 8) & 0xff;
303 int b = (rgb) & 0xff;
304 if (linear) {
305 r = BufferedPaints.convertSRGBtoLinearRGB(r);
306 g = BufferedPaints.convertSRGBtoLinearRGB(g);
307 b = BufferedPaints.convertSRGBtoLinearRGB(b);
308 }
309
310 a *= xrCompMan.getExtraAlpha();
311
312 return ((a << 24) | (r << 16) | (g << 8) | (b));
313 }
314 }