author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 16:30:29 +0300 | |
branch | RCL_3 |
changeset 19 | 04becd199f91 |
permissions | -rw-r--r-- |
19
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/* |
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* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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|
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package javax.microedition.lcdui; |
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|
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import java.io.InputStream; |
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import com.nokia.mj.impl.rt.legacy.NativeError; |
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import com.nokia.mj.impl.rt.legacy.ToolkitObserver; |
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import com.nokia.mj.impl.rt.support.Finalizer; |
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|
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class ImageLoader |
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{ |
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final Toolkit iToolkit; |
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private ToolkitObserver iObserver; |
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private int iHandle; |
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private AsyncCall iStatus; |
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private Finalizer mFinalizer; |
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|
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ImageLoader(Toolkit aToolkit) |
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{ |
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iToolkit = aToolkit; |
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iStatus = new AsyncCall(); |
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// |
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// Initialize cleanup: Register this object with the finalizer and with |
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// the toolkit. |
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// |
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iObserver = new ToolkitObserver() |
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{ |
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public void destroyNotify() |
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{ |
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dispose(); |
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} |
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}; |
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iToolkit.addObserver(iObserver); |
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mFinalizer = new Finalizer() |
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{ |
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public void finalizeImpl() |
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{ |
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doFinalize(); |
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} |
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}; |
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|
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synchronized (iToolkit) |
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{ |
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iHandle = NativeError.check(_create(iToolkit.getEventServerHandle(), iToolkit.getHandle())); |
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} |
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} |
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|
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synchronized boolean append(byte[] aByteArray, int aOffset, int aCount) |
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{ |
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if (iHandle == 0) |
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return false; |
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|
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synchronized (this) |
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{ |
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NativeError.check(_append(iHandle, aByteArray, aOffset, aCount)); |
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} |
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return true; |
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} |
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|
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/** |
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* Blocking decode, streams encoded data to native decoder. |
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*/ |
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void decode() |
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{ |
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synchronized (iStatus) |
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{ |
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synchronized (this) |
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{ |
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synchronized (iToolkit) |
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{ |
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NativeError.check(_decode(iHandle)); |
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} |
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iStatus.request(); |
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} |
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NativeError.check(iStatus.waitForRequest()); |
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} |
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} |
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|
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/** |
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* WARNING - converters may be disposed on toolkit shutdown. |
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* Handle could become invalid unless toolkit is locked down |
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* over duration of use. |
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*/ |
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int getHandle() |
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{ |
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return iHandle; |
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} |
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|
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104 |
private void doFinalize() |
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Revision: v2.1.22
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105 |
{ |
04becd199f91
Revision: v2.1.22
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106 |
if (mFinalizer != null) |
04becd199f91
Revision: v2.1.22
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107 |
{ |
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Revision: v2.1.22
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108 |
registeredFinalize(); |
04becd199f91
Revision: v2.1.22
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109 |
mFinalizer = null; |
04becd199f91
Revision: v2.1.22
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110 |
} |
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Revision: v2.1.22
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111 |
} |
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Revision: v2.1.22
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112 |
|
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Revision: v2.1.22
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113 |
private void registeredFinalize() |
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Revision: v2.1.22
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114 |
{ |
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Revision: v2.1.22
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115 |
dispose(); |
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Revision: v2.1.22
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116 |
} |
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Revision: v2.1.22
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117 |
|
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Revision: v2.1.22
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118 |
synchronized void dispose() |
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Revision: v2.1.22
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119 |
{ |
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Revision: v2.1.22
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120 |
|
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Revision: v2.1.22
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121 |
if (iStatus.isPending()) |
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Revision: v2.1.22
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122 |
{ |
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Revision: v2.1.22
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123 |
iStatus.complete(-1); // unblock waiting thread(s) |
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Revision: v2.1.22
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124 |
} |
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Revision: v2.1.22
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125 |
if (iObserver != null) |
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Revision: v2.1.22
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126 |
{ |
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Revision: v2.1.22
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127 |
iToolkit.removeObserver(iObserver); // never throws |
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Revision: v2.1.22
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128 |
iObserver = null; |
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Revision: v2.1.22
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129 |
} |
04becd199f91
Revision: v2.1.22
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130 |
final int handle = iHandle; |
04becd199f91
Revision: v2.1.22
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131 |
iHandle = 0; |
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Revision: v2.1.22
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132 |
if (0 != handle) |
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Revision: v2.1.22
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133 |
{ |
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Revision: v2.1.22
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134 |
_destroy(handle); |
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Revision: v2.1.22
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135 |
} |
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Revision: v2.1.22
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136 |
} |
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Revision: v2.1.22
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137 |
|
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Revision: v2.1.22
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138 |
/** |
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Revision: v2.1.22
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139 |
* upcall. |
04becd199f91
Revision: v2.1.22
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140 |
*/ |
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Revision: v2.1.22
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141 |
private void signal(int aError) |
04becd199f91
Revision: v2.1.22
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142 |
{ |
04becd199f91
Revision: v2.1.22
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143 |
iStatus.complete(aError); |
04becd199f91
Revision: v2.1.22
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144 |
} |
04becd199f91
Revision: v2.1.22
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145 |
|
04becd199f91
Revision: v2.1.22
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146 |
private native int _create(int aEventServer, int aToolkitHandle); |
04becd199f91
Revision: v2.1.22
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147 |
private native void _destroy(int aHandle); |
04becd199f91
Revision: v2.1.22
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148 |
private native int _append(int aHandle, byte[] aArray, int aOffset, int aCount); |
04becd199f91
Revision: v2.1.22
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149 |
private native int _decode(int aHandle); |
04becd199f91
Revision: v2.1.22
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150 |
} |