/*
* 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);
}
}