16 */

    16 */

    17 

    17 

    18 

    18 

    19 #include "TXTETEXT.H"

    19 #include "TXTETEXT.H"

    20 #include "TXTSTD.H"

    20 #include "TXTSTD.H"

    21 

    26 

    22 

    27 

    23 EXPORT_C TInt CPlainText::CharPosOfParagraph(TInt& aLength,TInt aParaOffset)const

    28 EXPORT_C TInt CPlainText::CharPosOfParagraph(TInt& aLength,TInt aParaOffset)const

    24 /** Finds the length and the start position of a paragraph identified by its 

    29 /** Finds the length and the start position of a paragraph identified by its 

    25 paragraph number the first paragraph is numbered zero.

    30 paragraph number the first paragraph is numbered zero.

    59 @return The number of the paragraph containing the specified document position.

    64 @return The number of the paragraph containing the specified document position.

    60 The first paragraph is numbered zero. */

    65 The first paragraph is numbered zero. */

    61 	{

    66 	{

    62 	__TEST_INVARIANT;

    67 	__TEST_INVARIANT;

    63 

    68 

    64 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

    73 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

    65 	TUint scanMask=(EScanBackwards|EScanStayIfBoundary|EScanToUnitStart);

    74 	TUint scanMask=(EScanBackwards|EScanStayIfBoundary|EScanToUnitStart);

    66 	ScanParas(aPos,scanMask);

    75 	ScanParas(aPos,scanMask);

    67 	// aPos now holds the 1st char of the paragraph.

    76 	// aPos now holds the 1st char of the paragraph.

    68 	TInt paraOffset=0,currentPos=0;

    77 	TInt paraOffset=0,currentPos=0;

    91 @param aPunctuationIsDelimiter ETrue if punctuation characters should be treated 

   100 @param aPunctuationIsDelimiter ETrue if punctuation characters should be treated 

    92 as word delimiters, EFalse if not. */

   101 as word delimiters, EFalse if not. */

    93 	{

   102 	{

    94 	__TEST_INVARIANT;

   103 	__TEST_INVARIANT;

    95 

   104 

    96 	__ASSERT_ALWAYS(aCurrentPos>=0 && aCurrentPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   109 	__ASSERT_ALWAYS(aCurrentPos>=0 && aCurrentPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

    97 	aStartPos=aLength=aCurrentPos;

   110 	aStartPos=aLength=aCurrentPos;

    98 	// First find the start of the word.

   111 	// First find the start of the word.

    99 	TUint scanMask=(EScanBackwards|

   112 	TUint scanMask=(EScanBackwards|

   100 					EScanStayIfBoundary|

   113 					EScanStayIfBoundary|

   110 		scanMask|=EScanPictureIsDelimiter;

   123 		scanMask|=EScanPictureIsDelimiter;

   111 	if (aPunctuationIsDelimiter)

   124 	if (aPunctuationIsDelimiter)

   112 		scanMask|=EScanPunctuationIsDelimiter;

   125 		scanMask|=EScanPunctuationIsDelimiter;

   113 	ScanWords(aLength,scanMask);

   126 	ScanWords(aLength,scanMask);

   114 	aLength-=aStartPos;

   127 	aLength-=aStartPos;

   115 	__ASSERT_DEBUG(aLength+aStartPos<=(DocumentLength()+1),Panic(ECharPosBeyondDocument));

   132 	__ASSERT_DEBUG(aLength+aStartPos<=(DocumentLength()+1),Panic(ECharPosBeyondDocument));

   116 

   133 

   117 	__TEST_INVARIANT;

   134 	__TEST_INVARIANT;

   118 	}

   135 	}

   119 

   136 

   126 which it is located.

   143 which it is located.

   127 @return The number of characters skipped in scanning to the start of the 

   144 @return The number of characters skipped in scanning to the start of the 

   128 paragraph. */

   145 paragraph. */

   129 	{

   146 	{

   130 	__TEST_INVARIANT;

   147 	__TEST_INVARIANT;

   131 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   152 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   132 

   153 

   133 	int skipped = 0;

   154 	int skipped = 0;

   134 	while (aPos > 0)

   155 	while (aPos > 0)

   135 		{

   156 		{

   211 panic occurs. On return, contains the new document position. 

   232 panic occurs. On return, contains the new document position. 

   212 @param aScanMask The scan mask. See the enumeration whose values begin with 

   233 @param aScanMask The scan mask. See the enumeration whose values begin with 

   213 CPlainText::EScanBackwards. 

   234 CPlainText::EScanBackwards. 

   214 @return The number of characters skipped to reach the new document position. */

   235 @return The number of characters skipped to reach the new document position. */

   215 	{

   236 	{

   216 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   241 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   217 	SScanData scanData;

   242 	SScanData scanData;

   218 	InitScanControl(aPos,aScanMask,EUnitIsWord,scanData);

   243 	InitScanControl(aPos,aScanMask,EUnitIsWord,scanData);

   219 	return ScanUnit(aPos,EUnitIsWord,scanData);

   244 	return ScanUnit(aPos,EUnitIsWord,scanData);

   220 	}

   245 	}

   234 On return, contains the new document position. 

   259 On return, contains the new document position. 

   235 @param aScanMask The scan mask. See the enumeration whose values begin with 

   260 @param aScanMask The scan mask. See the enumeration whose values begin with 

   236 CPlainText::EScanBackwards. 

   261 CPlainText::EScanBackwards. 

   237 @return The number of characters skipped to reach the new document position. */

   262 @return The number of characters skipped to reach the new document position. */

   238 	{

   263 	{

   239 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   268 	__ASSERT_ALWAYS(aPos>=0 && aPos<=DocumentLength(),Panic(ECharPosBeyondDocument));

   240 	SScanData scanData;

   269 	SScanData scanData;

   241 	InitScanControl(aPos,aScanMask,EUnitIsParagraph,scanData);

   270 	InitScanControl(aPos,aScanMask,EUnitIsParagraph,scanData);

   242 	return ScanUnit(aPos,EUnitIsParagraph,scanData);

   271 	return ScanUnit(aPos,EUnitIsParagraph,scanData);

   243 	}

   272 	}