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 |
child 60 | 6c158198356e |
permissions | -rw-r--r-- |
19
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/******************************************************************************* |
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* Copyright (c) 2005, 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* Nokia Corporation - S60 implementation |
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*******************************************************************************/ |
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#ifndef UTILS_H |
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#define UTILS_H |
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#include "eswtmobileextensions.h" |
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#include "swtdisplay.h" |
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class CSwtListBoxItem; |
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class MSwtImage; |
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class MSwtImageData; |
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class TRgb; |
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/** |
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* Deletes an object that was allocated by the UI native thread |
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*/ |
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template<class C> |
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inline void DeleteInUiHeap(C* aPtr) |
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{ |
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delete aPtr; |
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} |
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// Error handling |
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void Throw(TInt aError, JNIEnv* aJniEnv); |
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void ThrowIfError(TInt aError, JNIEnv* aJniEnv); |
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// Releasing a Java peer |
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void ReleasePeer(JNIEnv* aJniEnv, TSwtPeer aPeer); |
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// Method calling |
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jmethodID GetJavaMethodId(JNIEnv* aJniEnv, jobject aObject, const char* aMethodName, const char* aMethodSignature); |
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void CallVoidJavaMethod(TBool& aFailed, JNIEnv* aJniEnv, jobject aObject, const char* aMethodName, const char* aMethodSignature, ...); |
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void CallStaticVoidJavaMethod(TBool& aFailed, JNIEnv* aJniEnv, const char* aClazz, const char* aMethodName, const char* aMethodSignature, ...); |
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jboolean CallBooleanJavaMethod(TBool& aFailed, JNIEnv* aJniEnv, jobject aObject, const char* aMethodName, const char* aMethodSignature, ...); |
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jobject CallObjectJavaMethod(TBool& aFailed, JNIEnv* aJniEnv, jobject aObject, const char* aMethodName, const char* aMethodSignature, ...); |
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jobject CallStaticObjectJavaMethod(TBool& aFailed, JNIEnv* aJniEnv, const char* aClazz, const char* aMethodName, const char* aMethodSignature, ...); |
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// Field retrieval |
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jint GetIntField(JNIEnv* aJniEnv, jobject aObject, jclass aClass, const char* aName, TBool& aFailed); |
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jboolean GetBooleanField(JNIEnv* aJniEnv, jobject aObject, jclass aClass, const char* aName, TBool& aFailed); |
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jobject GetObjectField(JNIEnv* aJniEnv, jobject aObject, jclass aClass, const char* aName, const char* aSignature, TBool& aFailed); |
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HBufC* GetStringFieldL(JNIEnv* aJniEnv, jobject aObject, jclass aClass, const char* aName, TBool& aFailed); |
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HBufC8* GetByteArrayFieldL(JNIEnv* aJniEnv, jobject aObject, jclass aClass, const char* aName, TBool& aFailed); |
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// Type conversion |
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jboolean ConvertBoolean(TBool aBool); |
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HBufC* ConvertStringL(JNIEnv* aJniEnv, const jstring aString); |
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HBufC* ConvertStringLC(JNIEnv* aJniEnv, const jstring aString); |
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HBufC16* ConvertString16LC(JNIEnv* aJniEnv, const jstring aString); |
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TInt JavaIntsToPoints(JNIEnv* aJniEnv, jintArray aIntArray, TPoint*& aPoints); |
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TInt JavaIntsToInts(JNIEnv* aJniEnv, jintArray aIntArray, TInt*& aInts); |
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TInt* JavaIntRegionToInts(JNIEnv* aJniEnv, jintArray aIntArray, const jsize& aStart, const jsize& aCount); |
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void ConvertIntegerArrayL(JNIEnv* aJniEnv, jintArray aIntArray, RArray<TInt>& aResultArray); |
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HBufC8* ConvertByteArrayL(JNIEnv* aJniEnv, jbyteArray aByteArray); |
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CDesCArray* ConvertStringArrayL(JNIEnv* aJniEnv, jobjectArray aStringArray); |
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CSwtListBoxItem* ConvertListBoxItemL(JNIEnv* aJniEnv, const jobject aJavaItem); |
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RSwtListBoxItemsArray ConvertListBoxItemArrayL(JNIEnv* aJniEnv, const jobjectArray aDataModelArray, TBool& aFailed); |
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// Creating Java objects |
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jbyteArray NewJavaByteArray(JNIEnv* aJniEnv, const TDesC8& aArray); |
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jbyteArray NewJavaByteArray(JNIEnv* aJniEnv, const TDesC8* aArray, TBool& aFailed); |
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jintArray NewJavaIntArray(JNIEnv* aJniEnv, const TInt* aArray, TInt aCount); |
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jobject NewJavaPoint(JNIEnv* aJniEnv, const TPoint& aPoint); |
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jobject NewJavaRectangle(JNIEnv* aJniEnv, const TRect& aRect); |
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jobject NewJavaRgb(JNIEnv* aJniEnv, const TRgb& aRgb); |
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jstring NewJavaString(JNIEnv* aJniEnv, const TDesC16& aString); |
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jobject NewJavaImageData(JNIEnv* aJniEnv, const MSwtImageData& aData); |
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jobjectArray NewJavaImageDataArray(JNIEnv* aJniEnv, const CSwtImageDataArray* aArray); |
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jobjectArray NewJavaControlArray(JNIEnv* aJniEnv, const CSwtPeerArray* aArray); |
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jobjectArray NewJavaObjectArray(JNIEnv* aJniEnv, const CSwtPeerArray* aArray, const char* aClassname); |
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TBool IsDefaultDisplayDisposed(TBool& aFailed, JNIEnv* aJniEnv); |
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/** |
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* Converts a Symbian Leave error code into a Java Exception |
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* |
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* @param aError Can be any Symbian error code or SWT error code; if it is 0 |
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* nothing is thrown. |
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* @param aJniEnv The JNI environment |
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*/ |
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inline void ThrowIfError(TInt aError, JNIEnv* aJniEnv) |
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{ |
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if (aError) |
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Throw(aError, aJniEnv); |
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} |
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|
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105 |
|
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106 |
/** |
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* Converts a Symbian boolean to a Java boolean |
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108 |
* |
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* Java booleans are 8-bit values whereas Symbian ones are 32-bit values, |
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* truncation may occur which could lead to unexpected results. This function |
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* prevents truncation. |
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*/ |
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inline jboolean ConvertBoolean(TBool aBool) |
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{ |
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return (aBool) ? static_cast<jboolean>(JNI_TRUE) : static_cast<jboolean>(JNI_FALSE); |
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} |
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|
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118 |
|
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119 |
/** |
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* Converts a Java String object to a Symbian descriptor. |
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* |
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* Same as ConvertStringL() except the return value is placed onto |
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* the cleanup stack. |
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* |
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* @sa ConvertStringL() |
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* @sa ConvertString16LC() |
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*/ |
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inline HBufC* ConvertStringLC(JNIEnv* aJniEnv, const jstring aString) |
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{ |
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#ifdef _UNICODE |
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return ConvertString16LC(aJniEnv, aString); |
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#else |
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// code needs to be written |
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#endif |
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} |
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|
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|
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/** |
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* Converts a Java String object to a Symbian descriptor. |
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* |
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* The returned TPtr points to a newly allocated buffer which |
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* must be freed using FreeString() when not needed any longer. |
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* |
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* @sa ConvertStringLC() |
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* @sa ConvertString16L() |
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*/ |
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inline HBufC* ConvertStringL(JNIEnv* aJniEnv, const jstring aString) |
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{ |
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HBufC* result = ConvertStringLC(aJniEnv, aString); |
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if (result != NULL) |
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CleanupStack::Pop(result); |
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return result; |
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} |
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|
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|
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/** |
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* Creates a Java String object |
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*/ |
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inline jstring NewJavaString(JNIEnv* aJniEnv, const TDesC16& aString) |
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{ |
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return aJniEnv->NewString(aString.Ptr(), aString.Length()); |
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} |
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|
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|
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/** |
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* Converts a device handle to a display pointer |
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*/ |
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inline CSwtDisplay* DisplayFromDevice(jint aDeviceHandle) |
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{ |
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// Must pass the device handle. |
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// Using display from TLS won't work unless we are in the UI thread. |
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// E.g. GC can be used from a non-UI thread. |
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ASSERT(aDeviceHandle != 0); |
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|
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return static_cast<CSwtDisplay*>(reinterpret_cast<MSwtDevice*>(aDeviceHandle)); |
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} |
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|
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|
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// Signature generating macros |
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//#define OBJECT_SIGNATURE( aArgList, aReturnType) "(" aArgList ")" aReturnType |
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|
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|
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#endif // UTILS_H |