JDK14/Java14源码在线阅读
/*
* Copyright (c) 2002, 2014, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/
package sun.awt.X11;
/**
* XAtom is a class that allows you to create and modify X Window properties.
* An X Atom is an identifier for a property that you can set on any X Window.
* Standard X Atom are defined by X11 and these atoms are defined in this class
* for convenience. Common X Atoms like {@code XA_WM_NAME} are used to communicate with the
* Window manager to let it know the Window name. The use and protocol for these
* atoms are defined in the Inter client communications converntions manual.
* User specified XAtoms are defined by specifying a name that gets Interned
* by the XServer and an {@code XAtom} object is returned. An {@code XAtom} can also be created
* by using a pre-exisiting atom like {@code XA_WM_CLASS}. A {@code display} has to be specified
* in order to create an {@code XAtom}. <p> <p>
*
* Once an {@code XAtom} instance is created, you can call get and set property methods to
* set the values for a particular window. <p> <p>
*
*
* Example usage : To set the window name for a top level: <p>
* <pre>{@code
* XAtom xa = new XAtom(display,XAtom.XA_WM_NAME);
* xa.setProperty(window,"Hello World");
* }</pre>
* <p>
* <p>
* To get the cut buffer:
* <pre>{@code
* XAtom xa = new XAtom(display,XAtom.XA_CUT_BUFFER0);
* String selection = xa.getProperty(root_window);
* }</pre>
*
* @author Bino George
* @since 1.5
*/
import jdk.internal.misc.Unsafe;
import java.util.HashMap;
public final class XAtom {
// Order of lock: XAWTLock -> XAtom.class
/* Predefined Atoms - automatically extracted from XAtom.h */
private static Unsafe unsafe = XlibWrapper.unsafe;
private static XAtom[] emptyList = new XAtom[0];
public static final long XA_PRIMARY=1;
public static final long XA_SECONDARY=2;
public static final long XA_ARC=3;
public static final long XA_ATOM=4;
public static final long XA_BITMAP=5;
public static final long XA_CARDINAL=6;
public static final long XA_COLORMAP=7;
public static final long XA_CURSOR=8;
public static final long XA_CUT_BUFFER0=9;
public static final long XA_CUT_BUFFER1=10;
public static final long XA_CUT_BUFFER2=11;
public static final long XA_CUT_BUFFER3=12;
public static final long XA_CUT_BUFFER4=13;
public static final long XA_CUT_BUFFER5=14;
public static final long XA_CUT_BUFFER6=15;
public static final long XA_CUT_BUFFER7=16;
public static final long XA_DRAWABLE=17;
public static final long XA_FONT=18;
public static final long XA_INTEGER=19;
public static final long XA_PIXMAP=20;
public static final long XA_POINT=21;
public static final long XA_RECTANGLE=22;
public static final long XA_RESOURCE_MANAGER=23;
public static final long XA_RGB_COLOR_MAP=24;
public static final long XA_RGB_BEST_MAP=25;
public static final long XA_RGB_BLUE_MAP=26;
public static final long XA_RGB_DEFAULT_MAP=27;
public static final long XA_RGB_GRAY_MAP=28;
public static final long XA_RGB_GREEN_MAP=29;
public static final long XA_RGB_RED_MAP=30;
public static final long XA_STRING=31;
public static final long XA_VISUALID=32;
public static final long XA_WINDOW=33;
public static final long XA_WM_COMMAND=34;
public static final long XA_WM_HINTS=35;
public static final long XA_WM_CLIENT_MACHINE=36;
public static final long XA_WM_ICON_NAME=37;
public static final long XA_WM_ICON_SIZE=38;
public static final long XA_WM_NAME=39;
public static final long XA_WM_NORMAL_HINTS=40;
public static final long XA_WM_SIZE_HINTS=41;
public static final long XA_WM_ZOOM_HINTS=42;
public static final long XA_MIN_SPACE=43;
public static final long XA_NORM_SPACE=44;
public static final long XA_MAX_SPACE=45;
public static final long XA_END_SPACE=46;
public static final long XA_SUPERSCRIPT_X=47;
public static final long XA_SUPERSCRIPT_Y=48;
public static final long XA_SUBSCRIPT_X=49;
public static final long XA_SUBSCRIPT_Y=50;
public static final long XA_UNDERLINE_POSITION=51;
public static final long XA_UNDERLINE_THICKNESS=52 ;
public static final long XA_STRIKEOUT_ASCENT=53;
public static final long XA_STRIKEOUT_DESCENT=54;
public static final long XA_ITALIC_ANGLE=55;
public static final long XA_X_HEIGHT=56;
public static final long XA_QUAD_WIDTH=57;
public static final long XA_WEIGHT=58;
public static final long XA_POINT_SIZE=59;
public static final long XA_RESOLUTION=60;
public static final long XA_COPYRIGHT=61;
public static final long XA_NOTICE=62;
public static final long XA_FONT_NAME=63;
public static final long XA_FAMILY_NAME=64;
public static final long XA_FULL_NAME=65;
public static final long XA_CAP_HEIGHT=66;
public static final long XA_WM_CLASS=67;
public static final long XA_WM_TRANSIENT_FOR=68;
public static final long XA_LAST_PREDEFINED=68;
static HashMap<Long, XAtom> atomToAtom = new HashMap<Long, XAtom>();
static HashMap<String, XAtom> nameToAtom = new HashMap<String, XAtom>();
static void register(XAtom at) {
if (at == null) {
return;
}
synchronized (XAtom.class) {
if (at.atom != 0) {
atomToAtom.put(Long.valueOf(at.atom), at);
}
if (at.name != null) {
nameToAtom.put(at.name, at);
}
}
}
static XAtom lookup(long atom) {
synchronized (XAtom.class) {
return atomToAtom.get(Long.valueOf(atom));
}
}
static XAtom lookup(String name) {
synchronized (XAtom.class) {
return nameToAtom.get(name);
}
}
/*
* [das]Suggestion:
* 1.Make XAtom immutable.
* 2.Replace public ctors with factory methods (e.g. get() below).
*/
static XAtom get(long atom) {
XAtom xatom = lookup(atom);
if (xatom == null) {
xatom = new XAtom(XToolkit.getDisplay(), atom);
}
return xatom;
}
public static XAtom get(String name) {
XAtom xatom = lookup(name);
if (xatom == null) {
xatom = new XAtom(XToolkit.getDisplay(), name);
}
return xatom;
}
public String getName() {
if (name == null) {
XToolkit.awtLock();
try {
this.name = XlibWrapper.XGetAtomName(display, atom);
} finally {
XToolkit.awtUnlock();
}
register();
}
return name;
}
static String asString(long atom) {
XAtom at = lookup(atom);
if (at == null) {
return Long.toString(atom);
} else {
return at.toString();
}
}
void register() {
register(this);
}
public String toString() {
if (name != null) {
return name + ":" + atom;
} else {
return Long.toString(atom);
}
}
/* interned value of Atom */
long atom = 0;
/* name of atom */
String name;
/* display for X connection */
long display;
/** This constructor will create and intern a new XAtom that is specified
* by the supplied name.
*
* @param display X display to use
* @param name name of the XAtom to create.
* @since 1.5
*/
private XAtom(long display, String name) {
this(display, name, true);
}
public XAtom(String name, boolean autoIntern) {
this(XToolkit.getDisplay(), name, autoIntern);
}
/** This constructor will create an instance of XAtom that is specified
* by the predefined XAtom specified by u {@code latom}
*
* @param display X display to use.
* @param atom a predefined XAtom.
* @since 1.5
*/
public XAtom(long display, long atom) {
this.atom = atom;
this.display = display;
register();
}
/** This constructor will create the instance,
* and if {@code autoIntern} is true intern a new XAtom that is specified
* by the supplied name.
*
* @param display X display to use
* @param name name of the XAtom to create.
* @since 1.5
*/
private XAtom(long display, String name, boolean autoIntern) {
this.name = name;
this.display = display;
if (autoIntern) {
XToolkit.awtLock();
try {
atom = XlibWrapper.InternAtom(display,name,0);
} finally {
XToolkit.awtUnlock();
}
}
register();
}
/**
* Creates uninitialized instance of
*/
public XAtom() {
}
/** Sets the window property for the specified window
* @param window window id to use
* @param str value to set to.
* @since 1.5
*/
public void setProperty(long window, String str) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
XlibWrapper.SetProperty(display,window,atom,str);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Sets UTF8_STRING type property. Explicitly converts str to UTF-8 byte sequence.
*/
public void setPropertyUTF8(long window, String str) {
XAtom XA_UTF8_STRING = XAtom.get("UTF8_STRING"); /* like STRING but encoding is UTF-8 */
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
byte[] bdata = null;
try {
bdata = str.getBytes("UTF-8");
} catch (java.io.UnsupportedEncodingException uee) {
uee.printStackTrace();
}
if (bdata != null) {
setAtomData(window, XA_UTF8_STRING.atom, bdata);
}
}
/**
* Sets STRING/8 type property. Explicitly converts str to Latin-1 byte sequence.
*/
public void setProperty8(long window, String str) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
byte[] bdata = null;
try {
bdata = str.getBytes("ISO-8859-1");
} catch (java.io.UnsupportedEncodingException uee) {
uee.printStackTrace();
}
if (bdata != null) {
setAtomData(window, XA_STRING, bdata);
}
}
/** Gets the window property for the specified window
* @param window window id to use
* @return string with the property.
* @since 1.5
*/
public String getProperty(long window) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
return XlibWrapper.GetProperty(display,window,atom);
} finally {
XToolkit.awtUnlock();
}
}
/*
* Auxiliary function that returns the value of 'property' of type
* 'property_type' on window 'window'. Format of the property must be 32.
*/
public long get32Property(long window, long property_type) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
WindowPropertyGetter getter =
new WindowPropertyGetter(window, this, 0, 1,
false, property_type);
try {
int status = getter.execute();
if (status != XConstants.Success || getter.getData() == 0) {
return 0;
}
if (getter.getActualType() != property_type || getter.getActualFormat() != 32) {
return 0;
}
return Native.getCard32(getter.getData());
} finally {
getter.dispose();
}
}
/**
* Returns value of property of type CARDINAL/32 of this window
*/
public long getCard32Property(XBaseWindow window) {
return get32Property(window.getWindow(), XA_CARDINAL);
}
/**
* Sets property of type CARDINAL on the window
*/
public void setCard32Property(long window, long value) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
Native.putCard32(XlibWrapper.larg1, value);
XlibWrapper.XChangeProperty(XToolkit.getDisplay(), window,
atom, XA_CARDINAL, 32, XConstants.PropModeReplace,
XlibWrapper.larg1, 1);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Sets property of type CARDINAL/32 on the window
*/
public void setCard32Property(XBaseWindow window, long value) {
setCard32Property(window.getWindow(), value);
}
/**
* Gets uninterpreted set of data from property and stores them in data_ptr.
* Property type is the same as current atom, property is current atom.
* Property format is 32. Property 'delete' is false.
* Returns boolean if requested type, format, length match returned values
* and returned data pointer is not null.
*/
public boolean getAtomData(long window, long data_ptr, int length) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
WindowPropertyGetter getter =
new WindowPropertyGetter(window, this, 0, (long)length,
false, this);
try {
int status = getter.execute();
if (status != XConstants.Success || getter.getData() == 0) {
return false;
}
if (getter.getActualType() != atom
|| getter.getActualFormat() != 32
|| getter.getNumberOfItems() != length
)
{
return false;
}
XlibWrapper.memcpy(data_ptr, getter.getData(), length*getAtomSize());
return true;
} finally {
getter.dispose();
}
}
/**
* Gets uninterpreted set of data from property and stores them in data_ptr.
* Property type is {@code type}, property is current atom.
* Property format is 32. Property 'delete' is false.
* Returns boolean if requested type, format, length match returned values
* and returned data pointer is not null.
*/
public boolean getAtomData(long window, long type, long data_ptr, int length) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
WindowPropertyGetter getter =
new WindowPropertyGetter(window, this, 0, (long)length,
false, type);
try {
int status = getter.execute();
if (status != XConstants.Success || getter.getData() == 0) {
return false;
}
if (getter.getActualType() != type
|| getter.getActualFormat() != 32
|| getter.getNumberOfItems() != length
)
{
return false;
}
XlibWrapper.memcpy(data_ptr, getter.getData(), length*getAtomSize());
return true;
} finally {
getter.dispose();
}
}
/**
* Sets uninterpreted set of data into property from data_ptr.
* Property type is the same as current atom, property is current atom.
* Property format is 32. Mode is PropModeReplace. length is a number
* of items pointer by data_ptr.
*/
public void setAtomData(long window, long data_ptr, int length) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
XlibWrapper.XChangeProperty(XToolkit.getDisplay(), window,
atom, atom, 32, XConstants.PropModeReplace,
data_ptr, length);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Sets uninterpreted set of data into property from data_ptr.
* Property type is {@code type}, property is current atom.
* Property format is 32. Mode is PropModeReplace. length is a number
* of items pointer by data_ptr.
*/
public void setAtomData(long window, long type, long data_ptr, int length) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
XlibWrapper.XChangeProperty(XToolkit.getDisplay(), window,
atom, type, 32, XConstants.PropModeReplace,
data_ptr, length);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Sets uninterpreted set of data into property from data_ptr.
* Property type is {@code type}, property is current atom.
* Property format is 8. Mode is PropModeReplace. length is a number
* of bytes pointer by data_ptr.
*/
public void setAtomData8(long window, long type, long data_ptr, int length) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
XlibWrapper.XChangeProperty(XToolkit.getDisplay(), window,
atom, type, 8, XConstants.PropModeReplace,
data_ptr, length);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Deletes property specified by this item on the window.
*/
public void DeleteProperty(long window) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
XToolkit.awtLock();
try {
XlibWrapper.XDeleteProperty(XToolkit.getDisplay(), window, atom);
} finally {
XToolkit.awtUnlock();
}
}
/**
* Deletes property specified by this item on the window.
*/
public void DeleteProperty(XBaseWindow window) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window.getWindow());
XToolkit.awtLock();
try {
XlibWrapper.XDeleteProperty(XToolkit.getDisplay(),
window.getWindow(), atom);
} finally {
XToolkit.awtUnlock();
}
}
public void setAtomData(long window, long property_type, byte[] data) {
long bdata = Native.toData(data);
try {
setAtomData8(window, property_type, bdata, data.length);
} finally {
unsafe.freeMemory(bdata);
}
}
/*
* Auxiliary function that returns the value of 'property' of type
* 'property_type' on window 'window'. Format of the property must be 8.
*/
public byte[] getByteArrayProperty(long window, long property_type) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
WindowPropertyGetter getter =
new WindowPropertyGetter(window, this, 0, 0xFFFF,
false, property_type);
try {
int status = getter.execute();
if (status != XConstants.Success || getter.getData() == 0) {
return null;
}
if (getter.getActualType() != property_type || getter.getActualFormat() != 8) {
return null;
}
byte[] res = XlibWrapper.getStringBytes(getter.getData());
return res;
} finally {
getter.dispose();
}
}
/**
* Interns the XAtom
*/
public void intern(boolean onlyIfExists) {
XToolkit.awtLock();
try {
atom = XlibWrapper.InternAtom(display,name, onlyIfExists?1:0);
} finally {
XToolkit.awtUnlock();
}
register();
}
public boolean isInterned() {
if (atom == 0) {
XToolkit.awtLock();
try {
atom = XlibWrapper.InternAtom(display, name, 1);
} finally {
XToolkit.awtUnlock();
}
if (atom == 0) {
return false;
} else {
register();
return true;
}
} else {
return true;
}
}
public void setValues(long display, String name, long atom) {
this.display = display;
this.atom = atom;
this.name = name;
register();
}
static int getAtomSize() {
return Native.getLongSize();
}
/*
* Returns the value of property ATOM[]/32 as array of XAtom objects
* @return array of atoms, array of length 0 if the atom list is empty
* or has different format
*/
XAtom[] getAtomListProperty(long window) {
if (atom == 0) {
throw new IllegalStateException("Atom should be initialized");
}
checkWindow(window);
WindowPropertyGetter getter =
new WindowPropertyGetter(window, this, 0, 0xFFFF,
false, XA_ATOM);
try {
int status = getter.execute();
if (status != XConstants.Success || getter.getData() == 0) {
return emptyList;
}
if (getter.getActualType() != XA_ATOM || getter.getActualFormat() != 32) {
return emptyList;
}
int count = getter.getNumberOfItems();
if (count == 0) {
return emptyList;
}
long list_atoms = getter.getData();
XAtom[] res = new XAtom[count];
for (int index = 0; index < count; index++) {
res[index] = XAtom.get(XAtom.getAtom(list_atoms+index*getAtomSize()));
}
return res;
} finally {
getter.dispose();
}
}
/*
* Returns the value of property of type ATOM[]/32 as XAtomList
* @return list of atoms, empty list if the atom list is empty
* or has different format
*/
XAtomList getAtomListPropertyList(long window) {
return new XAtomList(getAtomListProperty(window));
}
XAtomList getAtomListPropertyList(XBaseWindow window) {
return getAtomListPropertyList(window.getWindow());
}
XAtom[] getAtomListProperty(XBaseWindow window) {
return getAtomListProperty(window.getWindow());
}
/**
* Sets property value of type ATOM list to the list of atoms.
*/
void setAtomListProperty(long window, XAtom[] atoms) {
long data = toData(atoms);
setAtomData(window, XAtom.XA_ATOM, data, atoms.length);
unsafe.freeMemory(data);
}
/**
* Sets property value of type ATOM list to the list of atoms specified by XAtomList
*/
void setAtomListProperty(long window, XAtomList atoms) {
long data = atoms.getAtomsData();
setAtomData(window, XAtom.XA_ATOM, data, atoms.size());
unsafe.freeMemory(data);
}
/**
* Sets property value of type ATOM list to the list of atoms.
*/
public void setAtomListProperty(XBaseWindow window, XAtom[] atoms) {
setAtomListProperty(window.getWindow(), atoms);
}
/**
* Sets property value of type ATOM list to the list of atoms specified by XAtomList
*/
public void setAtomListProperty(XBaseWindow window, XAtomList atoms) {
setAtomListProperty(window.getWindow(), atoms);
}
long getAtom() {
return atom;
}
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