--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/awt/font/TextLayout/TestGetPixelBounds.java Wed Jan 06 12:38:42 2016 -0800
@@ -0,0 +1,261 @@
+/*
+ * Copyright (c) 2005, 2015, Oracle and/or its affiliates. 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.
+ *
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 6271221 8145584
+ * @summary ask a text layout for its pixel bounds, then render it and
+ * compute the actual pixel bounds when rendering-- the actual pixel bounds
+ * must be contained within the bounds reported by the text layout, or there
+ * will be an exception.
+ */
+
+/*
+ * Copyright 2005 IBM Corp. All Rights Reserved.
+ */
+
+import java.awt.*;
+import java.awt.font.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import java.text.*;
+import java.util.*;
+
+import static java.awt.Font.*;
+import static java.awt.font.GraphicAttribute.*;
+import static java.awt.font.ShapeGraphicAttribute.*;
+import static java.awt.font.TextAttribute.*;
+
+public class TestGetPixelBounds {
+ static final boolean DEBUG;
+ static final boolean DUMP;
+ static {
+ String dbg = null;
+ String dmp = null;
+ try {
+ dbg = System.getProperty("DEBUG");
+ dmp = System.getProperty("DUMP");
+ }
+ catch (SecurityException e) {
+ dbg = dmp = null;
+ }
+
+ DEBUG = dbg != null;
+ DUMP = dmp != null;
+ }
+
+ public static void main(String[] args) {
+ float x = 0;
+ float y = 0;
+ boolean rotate = false;
+ boolean underline = false;
+ boolean graphic = false;
+ String text = "Ping";
+ for (int i = 0; i < args.length; ++i) {
+ String arg = args[i];
+ if (arg.startsWith("-x")) {
+ x = Float.parseFloat(args[++i]);
+ } else if (arg.startsWith("-y")) {
+ y = Float.parseFloat(args[++i]);
+ } else if (arg.startsWith("-r")) {
+ rotate = true;
+ } else if (arg.startsWith("-u")) {
+ underline = true;
+ } else if (arg.startsWith("-g")) {
+ graphic = true;
+ } else if (arg.startsWith("-t")) {
+ text = args[++i];
+ }
+ }
+ FontRenderContext frc = new FontRenderContext(null, true, true);
+ Map<TextAttribute, Object> m = new HashMap<TextAttribute, Object>();
+ m.put(FAMILY, SANS_SERIF);
+ m.put(SIZE, 16);
+ if (underline) {
+ m.put(UNDERLINE, UNDERLINE_ON);
+ }
+ if (rotate) {
+ m.put(TRANSFORM, AffineTransform.getRotateInstance(Math.PI/4));
+ }
+ Font font = Font.getFont(m);
+
+ AttributedString as;
+ if (graphic) {
+ GraphicAttribute sga = new ShapeGraphicAttribute(
+ new Ellipse2D.Float(0,-10,10,20), TOP_ALIGNMENT, STROKE);
+ as = new AttributedString(text + '*' + text, m);
+ as.addAttribute(CHAR_REPLACEMENT, sga, text.length(), text.length() + 1);
+ } else {
+ as = new AttributedString(text, m);
+ }
+ TextLayout tl = new TextLayout(as.getIterator(), frc);
+ System.out.println("tl bounds: " + tl.getBounds());
+ System.out.println("tl compute: " + computeLayoutBounds(tl, x, y, frc));
+ System.out.println("tl pixel bounds: " + tl.getPixelBounds(frc, x, y));
+ System.out.println(" again int off: " + tl.getPixelBounds(frc, x+2, y - 2));
+ System.out.println(" again frac off: " + tl.getPixelBounds(frc, x+.5f, y + .2f));
+ System.out.println(" again frc: " + tl.getPixelBounds(
+ new FontRenderContext(AffineTransform.getScaleInstance(100, 100), true, true), x, y));
+ System.out.println(" again int off: " + tl.getPixelBounds(frc, x-2, y+2));
+
+ GlyphVector gv = font.createGlyphVector(frc, text);
+ System.out.println("gv bounds: " + gv.getPixelBounds(frc, x, y));
+ System.out.println("gv compute: " + computeLayoutBounds(gv, x, y, frc));
+
+ if (!tl.getPixelBounds(frc, x, y).contains(computeLayoutBounds(tl, x, y, frc))) {
+ throw new RuntimeException("error, tl.bounds does not contain computed bounds");
+ }
+ }
+
+ static Rectangle computeLayoutBounds(TextLayout tl, float x, float y, FontRenderContext frc) {
+ Rectangle bounds = tl.getBounds().getBounds();
+ BufferedImage im = new BufferedImage(bounds.width + 4, bounds.height + 4,
+ BufferedImage.TYPE_INT_ARGB);
+
+ Graphics2D g2d = im.createGraphics();
+ g2d.setColor(Color.WHITE);
+ g2d.fillRect(0, 0, im.getWidth(), im.getHeight());
+
+ float fx = (float)Math.IEEEremainder(x,1);
+ float fy = (float)Math.IEEEremainder(y,1);
+ g2d.setColor(Color.BLACK);
+ tl.draw(g2d, fx + 2 - bounds.x, fy + 2 - bounds.y);
+
+ Rectangle r = computePixelBounds(im);
+ r.x += (int)Math.floor(x) - 2 + bounds.x;
+ r.y += (int)Math.floor(y) - 2 + bounds.y;
+
+ return r;
+ }
+
+ static Rectangle computeLayoutBounds(GlyphVector gv, float x, float y, FontRenderContext frc) {
+ Rectangle bounds = gv.getVisualBounds().getBounds();
+ BufferedImage im = new BufferedImage(bounds.width + 4, bounds.height + 4,
+ BufferedImage.TYPE_INT_ARGB);
+
+ Graphics2D g2d = im.createGraphics();
+ g2d.setColor(Color.WHITE);
+ g2d.fillRect(0, 0, im.getWidth(), im.getHeight());
+
+ float fx = (float)Math.IEEEremainder(x,1);
+ float fy = (float)Math.IEEEremainder(y,1);
+ g2d.setColor(Color.BLACK);
+ g2d.drawGlyphVector(gv, fx + 2 - bounds.x, fy + 2 - bounds.y);
+
+ Rectangle r = computePixelBounds(im);
+ r.x += (int)Math.floor(x) - 2 + bounds.x;
+ r.y += (int)Math.floor(y) - 2 + bounds.y;
+
+ return r;
+ }
+
+ static Rectangle computePixelBounds(BufferedImage im) {
+ int w = im.getWidth();
+ int h = im.getHeight();
+
+ Formatter fmt = DEBUG ? new Formatter(System.err) : null;
+
+ // dump
+ if (DUMP && DEBUG) {
+ fmt.format(" ");
+ for (int j = 0; j < w; ++j) {
+ fmt.format("%2d", j);
+ }
+ for (int i = 0; i < h; ++i) {
+ fmt.format("\n[%2d] ", i);
+ for (int j = 0; j < w; ++j) {
+ fmt.format("%c ", im.getRGB(j, i) == -1 ? ' ' : '*');
+ }
+ }
+ fmt.format("\n");
+ }
+
+ int l = -1, t = -1, r = w, b = h;
+
+ {
+ // get top
+ int[] buf = new int[w];
+ loop:
+ while (++t < h) {
+ im.getRGB(0, t, buf.length, 1, buf, 0, w); // w ignored
+ for (int i = 0; i < buf.length; i++) {
+ if (buf[i] != -1) {
+ if (DEBUG) fmt.format("top pixel at %d,%d = 0x%08x\n", i, t, buf[i]);
+ break loop;
+ }
+ }
+ }
+ if (DEBUG) fmt.format("t: %d\n", t);
+ }
+
+ // get bottom
+ {
+ int[] buf = new int[w];
+ loop:
+ while (--b > t) {
+ im.getRGB(0, b, buf.length, 1, buf, 0, w); // w ignored
+ for (int i = 0; i < buf.length; ++i) {
+ if (buf[i] != -1) {
+ if (DEBUG) fmt.format("bottom pixel at %d,%d = 0x%08x\n", i, b, buf[i]);
+ break loop;
+ }
+ }
+ }
+ ++b;
+ if (DEBUG) fmt.format("b: %d\n", b);
+ }
+
+ // get left
+ {
+ loop:
+ while (++l < r) {
+ for (int i = t; i < b; ++i) {
+ int v = im.getRGB(l, i);
+ if (v != -1) {
+ if (DEBUG) fmt.format("left pixel at %d,%d = 0x%08x\n", l, i, v);
+ break loop;
+ }
+ }
+ }
+ if (DEBUG) fmt.format("l: %d\n", l);
+ }
+
+ // get right
+ {
+ loop:
+ while (--r > l) {
+ for (int i = t; i < b; ++i) {
+ int v = im.getRGB(r, i);
+ if (v != -1) {
+ if (DEBUG) fmt.format("right pixel at %d,%d = 0x%08x\n", r, i, v);
+ break loop;
+ }
+ }
+ }
+ ++r;
+ if (DEBUG) fmt.format("r: %d\n", r);
+ }
+
+ return new Rectangle(l, t, r-l, b-t);
+ }
+}