Package org.lwjgl.system.jawt

Class JAWTDrawingSurface

java.lang.Object

org.lwjgl.system.Pointer.Default

org.lwjgl.system.Struct

org.lwjgl.system.jawt.JAWTDrawingSurface

All Implemented Interfaces:

org.lwjgl.system.Pointer

public class JAWTDrawingSurface
extends org.lwjgl.system.Struct

Structure for containing the underlying drawing information of a component.

All operations on a JAWT_DrawingSurface MUST be performed from the same thread as the call to GetDrawingSurface.

Member documentation

• env – Cached reference to the Java environment of the calling thread.

  If Lock(), Unlock(), GetDrawingSurfaceInfo() or FreeDrawingSurfaceInfo() are called from a different thread, this data member should be set before calling those functions.

• target – Cached reference to the target object.

Layout

 struct JAWT_DrawingSurface {
     JNIEnv * env;
     jobject target;
     void * Lock;
     void * GetDrawingSurfaceInfo;
     void * FreeDrawingSurfaceInfo;
     void * Unlock;
 }

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JAWTDrawingSurface.Buffer	An array of JAWTDrawingSurface structs.

Nested classes/interfaces inherited from interface org.lwjgl.system.Pointer

org.lwjgl.system.Pointer.Default

Field Summary

Fields

Modifier and Type	Field	Description
static int	ALIGNOF	The struct alignment in bytes.
static int	ENV FREEDRAWINGSURFACEINFO GETDRAWINGSURFACEINFO LOCK	The struct member offsets.
static int	SIZEOF	The struct size in bytes.
static int	TARGET UNLOCK	The struct member offsets.

Fields inherited from interface org.lwjgl.system.Pointer

BITS32, BITS64, CLONG_SHIFT, CLONG_SIZE, POINTER_SHIFT, POINTER_SIZE

Constructor Summary

Constructors

Constructor	Description
JAWTDrawingSurface(java.nio.ByteBuffer container)	Creates a JAWTDrawingSurface instance at the current position of the specified ByteBuffer container.

Method Summary

Modifier and Type	Method	Description
static JAWTDrawingSurface	create(long address)	Returns a new JAWTDrawingSurface instance for the specified memory address.
static JAWTDrawingSurface.Buffer	create(long address, int capacity)	Create a JAWTDrawingSurface.Buffer instance at the specified memory.
static JAWTDrawingSurface	createSafe(long address)	Like create, but returns null if address is NULL.
static JAWTDrawingSurface.Buffer	createSafe(long address, int capacity)	Like create, but returns null if address is NULL.
long	env()	Returns the value of the env field.
long	FreeDrawingSurfaceInfo()	Returns the value of the FreeDrawingSurfaceInfo field.
long	GetDrawingSurfaceInfo()	Returns the value of the GetDrawingSurfaceInfo field.
long	Lock()	Returns the value of the Lock field.
static long	nenv(long struct)	Unsafe version of env().
static long	nFreeDrawingSurfaceInfo(long struct)	Unsafe version of FreeDrawingSurfaceInfo().
static long	nGetDrawingSurfaceInfo(long struct)	Unsafe version of GetDrawingSurfaceInfo().
static long	nLock(long struct)	Unsafe version of Lock().
static long	ntarget(long struct)	Unsafe version of target().
static long	nUnlock(long struct)	Unsafe version of Unlock().
int	sizeof()
long	target()	Returns the value of the target field.
long	Unlock()	Returns the value of the Unlock field.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from class org.lwjgl.system.Pointer.Default

address, equals, hashCode, toString

Methods inherited from class org.lwjgl.system.Struct

clear, free, isNull

Field Detail

SIZEOF

The struct size in bytes.

ALIGNOF

The struct alignment in bytes.

ENV, TARGET, LOCK, GETDRAWINGSURFACEINFO, FREEDRAWINGSURFACEINFO, UNLOCK

The struct member offsets.

Constructor Detail

JAWTDrawingSurface

public JAWTDrawingSurface(java.nio.ByteBuffer container)

Creates a JAWTDrawingSurface instance at the current position of the specified ByteBuffer container. Changes to the buffer's content will be visible to the struct instance and vice versa.

The created instance holds a strong reference to the container object.

Method Detail

sizeof

public int sizeof()

Specified by:

sizeof in class org.lwjgl.system.Struct

env

public long env()

Returns the value of the env field.

target

public long target()

Returns the value of the target field.

Lock

public long Lock()

Returns the value of the Lock field.

GetDrawingSurfaceInfo

public long GetDrawingSurfaceInfo()

Returns the value of the GetDrawingSurfaceInfo field.

FreeDrawingSurfaceInfo

public long FreeDrawingSurfaceInfo()

Returns the value of the FreeDrawingSurfaceInfo field.

Unlock

public long Unlock()

Returns the value of the Unlock field.

create

public static JAWTDrawingSurface create(long address)

Returns a new JAWTDrawingSurface instance for the specified memory address.

createSafe

@Nullable
public static JAWTDrawingSurface createSafe(long address)

Like create, but returns null if address is NULL.

create

public static JAWTDrawingSurface.Buffer create(long address,
                                               int capacity)

Create a JAWTDrawingSurface.Buffer instance at the specified memory.

Parameters:

address - the memory address

capacity - the buffer capacity

createSafe

@Nullable
public static JAWTDrawingSurface.Buffer createSafe(long address,
                                                   int capacity)

Like create, but returns null if address is NULL.

nenv

public static long nenv(long struct)

Unsafe version of env().

ntarget

public static long ntarget(long struct)

Unsafe version of target().

nLock

public static long nLock(long struct)

Unsafe version of Lock().

nGetDrawingSurfaceInfo

public static long nGetDrawingSurfaceInfo(long struct)

Unsafe version of GetDrawingSurfaceInfo().

nFreeDrawingSurfaceInfo

public static long nFreeDrawingSurfaceInfo(long struct)

Unsafe version of FreeDrawingSurfaceInfo().

nUnlock

public static long nUnlock(long struct)

Unsafe version of Unlock().