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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* 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.
*
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*/
/* @test
@bug 8016833
@summary underlines and strikethroughs should be painted at the correct
positions for different kind of text styles: normal, superscript and subscript
@author Anton Nashatyrev
@run main bug8016833
*/
import javax.swing.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.lang.reflect.InvocationTargetException;
public class bug8016833 {
void drawText(final Graphics g, final boolean underline, final boolean strikethrough, final boolean background) {
drawText(g, "mama", underline, strikethrough, background);
}
void drawText(final Graphics g, final String text, final boolean underline, final boolean strikethrough, final boolean background) {
try {
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
final JTextPane comp = new JTextPane();
final StyledDocument doc = comp.getStyledDocument();
Style style = comp.addStyle("superscript", null);
setNormalStyle(style);
if (underline) {
StyleConstants.setUnderline(style, true);
}
if (strikethrough) {
StyleConstants.setStrikeThrough(style, true);
}
if (background) {
StyleConstants.setBackground(style, Color.BLUE);
}
try {
doc.insertString(doc.getLength(), "mama", style);
} catch (BadLocationException e) {
throw new RuntimeException(e);
}
comp.setSize(200, 100);
comp.paint(g);
}
});
} catch (InterruptedException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
throw new RuntimeException(e);
}
}
void setNormalStyle(Style style) {
StyleConstants.setSuperscript(style, true);
}
int getEmptyPixel() {
return 0xFFFFFFFF;
}
boolean isPixelEmpty(int argb) {
return (argb & 0x00FFFFFF) == (getEmptyPixel() & 0x00FFFFFF);
}
boolean isLineEmpty(BufferedImage img, int coord, boolean isHorizontal) {
int len = isHorizontal ? img.getWidth() : img.getHeight();
for (int i = 0; i < len; i++) {
int pixel = isHorizontal ? img.getRGB(i, coord) : img.getRGB(coord, i);
if (!isPixelEmpty(pixel)) {
return false;
}
}
return true;
}
Rectangle getPixelsOutline(BufferedImage img) {
int x1 = 0;
while (x1 < img.getWidth() && isLineEmpty(img, x1, false)) {
x1++;
}
int x2 = img.getWidth() - 1;
while (x2 >= 0 && isLineEmpty(img, x2, false)) {
x2--;
}
int y1 = 0;
while (y1 < img.getHeight() && isLineEmpty(img, y1, true)) {
y1++;
}
int y2 = img.getHeight() - 1;
while (y2 >= 0 && isLineEmpty(img, y2, true)) {
y2--;
}
return new Rectangle(x1, y1, x2 - x1 + 1, y2 - y1 + 1);
}
BufferedImage createImage() {
final BufferedImage img = new BufferedImage(200, 100, BufferedImage.TYPE_INT_ARGB);
try {
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
Graphics g = img.getGraphics();
g.setColor(new Color(getEmptyPixel()));
g.fillRect(0, 0, 10000, 10000);
}
});
} catch (InterruptedException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
throw new RuntimeException(e);
}
return img;
}
int subPixels(int pix1, int pix2) {
if (pix1 == pix2) {
return getEmptyPixel();
}
return pix1;
}
/**
* Subtracts img2 from img1
*/
BufferedImage subImages(BufferedImage img1, BufferedImage img2) {
if (img1.getHeight() != img2.getHeight() ||
img1.getWidth() != img2.getWidth()) {
throw new RuntimeException("Different sizes");
}
BufferedImage ret = new BufferedImage(img1.getWidth(), img1.getHeight(), img1.getType());
for (int x = 0; x < ret.getWidth(); x++) {
for (int y = 0; y < ret.getHeight(); y++) {
ret.setRGB(x, y, subPixels(img1.getRGB(x, y), img2.getRGB(x, y)));
}
}
return ret;
}
void testUnderline() {
System.out.println(" testUnderline()");
final BufferedImage img1 = createImage();
drawText(img1.getGraphics(), true, false, false);
final Rectangle out1 = getPixelsOutline(img1);
System.out.println(" Underlined: " + out1);
final BufferedImage img2 = createImage();
drawText(img2.getGraphics(), false, false, false);
final Rectangle out2 = getPixelsOutline(img2);
System.out.println(" Normal: " + out2);
final BufferedImage img3 = subImages(img1, img2);
final Rectangle out3 = getPixelsOutline(img3);
System.out.println(" Sub: " + out3);
// underline is not too thick
assertTrue(out3.getHeight() <= 2);
// not too wide
assertTrue(out3.getWidth() * 0.8 < out2.getWidth());
// not too low
assertTrue(out3.getY() - (out1.getY() + out2.getHeight() - 1) < 4);
// not too high
assertTrue(out3.getY() - (out1.getY() + out2.getHeight() - 1) > 0);
}
void testStrikthrough() {
System.out.println(" testStrikthrough()");
final BufferedImage img1 = createImage();
drawText(img1.getGraphics(), false, true, false);
final Rectangle out1 = getPixelsOutline(img1);
System.out.println(" Striked: " + out1);
final BufferedImage img2 = createImage();
drawText(img2.getGraphics(), false, false, false);
final Rectangle out2 = getPixelsOutline(img2);
System.out.println(" Normal: " + out2);
final BufferedImage img3 = subImages(img1, img2);
final Rectangle out3 = getPixelsOutline(img3);
System.out.println(" Sub: " + out3);
// strikethrough is not too thick
assertTrue(out3.getHeight() <= 2);
// not too wide
assertTrue(out3.getWidth() * 0.8 < out2.getWidth());
// not too low
assertTrue(out3.getY() - (out1.getY() + out2.getHeight() - 1) < 0);
// not too high
assertTrue(out3.getY() - out1.getY() > 1);
}
void assertTrue(boolean b) {
if (!b) {
throw new RuntimeException("Assertion failed");
}
}
static void testSuperScript() {
System.out.println("testSuperScript()");
bug8016833 b = new bug8016833() {
@Override
void setNormalStyle(Style style) {
StyleConstants.setSuperscript(style, true);
}
};
b.testUnderline();
b.testStrikthrough();
}
static void testSubScript() {
System.out.println("testSubScript()");
bug8016833 b = new bug8016833() {
@Override
void setNormalStyle(Style style) {
StyleConstants.setSubscript(style, true);
}
};
b.testUnderline();
b.testStrikthrough();
}
static void testNormalScript() {
System.out.println("testNormalScript()");
bug8016833 b = new bug8016833() {
@Override
void setNormalStyle(Style style) {
}
};
b.testUnderline();
b.testStrikthrough();
}
public static void main(String[] args) {
testSubScript();
testSuperScript();
testNormalScript();
}
}