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/**
* Copyright 2011 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.graph.font;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.AccessController;
import java.security.PrivilegedAction;
import com.jogamp.common.net.Uri;
import com.jogamp.common.util.IOUtil;
import com.jogamp.common.util.PropertyAccess;
import com.jogamp.common.util.ReflectionUtil;
import com.jogamp.common.util.cache.TempJarCache;
import jogamp.graph.font.FontConstructor;
import jogamp.graph.font.JavaFontLoader;
import jogamp.graph.font.UbuntuFontLoader;
/**
* The optional property <i>jogamp.graph.font.ctor</i>
* allows user to specify the {@link FontConstructor} implementation.
* <p>
* Default {@link FontConstructor} is {@link jogamp.graph.font.typecast.TypecastFontConstructor},
* i.e. using our internal <i>typecast</i> branch.
* </p>
*/
public class FontFactory {
private static final String FontConstructorPropKey = "jogamp.graph.font.ctor";
private static final String DefaultFontConstructor = "jogamp.graph.font.typecast.TypecastFontConstructor";
/** Ubuntu is the default font family, {@value} */
public static final int UBUNTU = 0;
/** Java fonts are optional, {@value} */
public static final int JAVA = 1;
private static final FontConstructor fontConstr;
static {
/**
* For example:
* "jogamp.graph.font.typecast.TypecastFontFactory" (default)
* "jogamp.graph.font.ttf.TTFFontImpl"
*/
String fontImplName = PropertyAccess.getProperty(FontConstructorPropKey, true);
if(null == fontImplName) {
fontImplName = DefaultFontConstructor;
}
fontConstr = (FontConstructor) ReflectionUtil.createInstance(fontImplName, FontFactory.class.getClassLoader());
}
public static final FontSet getDefault() {
return get(UBUNTU);
}
public static final FontSet get(final int font) {
switch (font) {
case JAVA:
return JavaFontLoader.get();
default:
return UbuntuFontLoader.get();
}
}
/**
* Creates a Font instance.
* @param file font file
* @return the new Font instance
* @throws IOException
*/
public static final Font get(final File file) throws IOException {
return fontConstr.create(file);
}
/**
* Creates a Font instance based on a determinated font stream with its given length
* of the font segment.
* <p>
* No explicit stream copy is performed as in {@link #get(InputStream, boolean)}
* due to the known {@code streamLen}.
* </p>
* @param stream font stream
* @param streamLen length of the font segment within this font stream
* @param closeStream {@code true} to close the {@code stream}
* @return the new Font instance
* @throws IOException
*/
public static final Font get(final InputStream stream, final int streamLen, final boolean closeStream) throws IOException {
try {
return fontConstr.create(stream, streamLen);
} finally {
if( closeStream ) {
stream.close();
}
}
}
/**
* Creates a Font instance based on an undeterminated font stream length.
* <p>
* The font stream is temporarily copied into a temp file
* to gather it's size and to gain random access.
* The temporary file will be deleted at exit.
* </p>
* @param stream dedicated font stream
* @param closeStream {@code true} to close the {@code stream}
* @return the new Font instance
* @throws IOException
*/
public static final Font get(final InputStream stream, final boolean closeStream) throws IOException {
final IOException[] ioe = { null };
final int[] streamLen = { 0 };
final File tempFile[] = { null };
final InputStream bis = AccessController.doPrivileged(new PrivilegedAction<InputStream>() {
@Override
public InputStream run() {
InputStream bis = null;
try {
tempFile[0] = IOUtil.createTempFile( "jogl.font", ".ttf", false);
streamLen[0] = IOUtil.copyStream2File(stream, tempFile[0], -1);
if( 0 == streamLen[0] ) {
throw new IOException("Font stream has zero bytes");
}
bis = new BufferedInputStream(new FileInputStream(tempFile[0]), streamLen[0]);
} catch (final IOException e) {
ioe[0] = e;
if( null != tempFile[0] ) {
tempFile[0].delete();
tempFile[0] = null;
}
streamLen[0] = 0;
} finally {
if( closeStream ) {
IOUtil.close(stream, ioe, System.err);
}
}
return bis;
} });
if( null != ioe[0] ) {
throw ioe[0];
}
if( null == bis ) {
throw new IOException("Could not cache font stream"); // should not be reached
}
try {
return fontConstr.create(bis, streamLen[0]);
} finally {
if( null != bis ) {
bis.close();
}
if( null != tempFile[0] ) {
AccessController.doPrivileged(new PrivilegedAction<Object>() {
@Override
public Object run() {
tempFile[0].delete();
return null;
} } );
}
}
}
public static final Font get(final Class<?> context, final String fname, final boolean useTempJarCache) throws IOException {
InputStream stream = null;
if( useTempJarCache ) {
try {
final Uri uri = TempJarCache.getResourceUri(fname);
stream = null != uri ? uri.toURL().openConnection().getInputStream() : null;
} catch (final Exception e) {
throw new IOException(e);
}
} else {
stream = IOUtil.getResource(context, fname).getInputStream();
}
if( null != stream ) {
return FontFactory.get ( stream, true ) ;
}
return null;
}
public static boolean isPrintableChar( final char c ) {
if( Character.isWhitespace(c) ) {
return true;
}
if( 0 == c || Character.isISOControl(c) ) {
return false;
}
final Character.UnicodeBlock block = Character.UnicodeBlock.of( c );
return block != null && block != Character.UnicodeBlock.SPECIALS;
}
}
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