--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textbase/sgdi/FontIndic.cpp Wed Aug 18 11:34:25 2010 +0300
@@ -0,0 +1,434 @@
+// Copyright (c) 2005-2010 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+/**
+ @file
+ @internalComponent
+*/
+
+//#include <gdi.h>
+#include <DisplayMode.h>
+#include "FontIndic.h"
+//#include <textbase.h>
+#include "GlyphSel.h"
+#include "ShapeInfo.h"
+#include "gdiinline.inl"
+
+// State machine for determining syllable boundaries.
+// Key: D = Dependent vowel. V = Virama. N = Nukta
+// I = Independent Vowel. S = Candrabindu/Anusvara/Visarga
+// C = Consonant. J = zero-width joiner. X = Other
+// A = Addak (double the following constant)
+enum TSyllableState
+ {
+ EReject = -1,
+ // Begin + I: add and move to IndependentVowel
+ // Begin + C: add and move to Consonant
+ // Begin + V/N/D/S/J/X: add and close syllable
+ EBegin = 0,
+ // Consonant + D: add and move to ConsonantVowel
+ // Consonant + N: add
+ // Consonant + V: add and move to Virama
+ // Consonant + S: add and close syllable
+ // Consonant + C/I/J/X: close syllable
+ EConsonant = 1,
+ // Consonant2 + D: add and move to ConsonantVowel
+ // Consonant2 + N: add
+ // Consonant2 + V: add and move to Virama2
+ // Consonant2 + S: add and close syllable
+ // Consonant2 + C/I/J/X: close syllable
+ EConsonant2 = 2,
+ // Consonant3 + D: add and move to ConsonantVowel
+ // Consonant3 + N: add
+ // Consonant3 + V: add and move to Virama3
+ // Consonant3 + S: add and close syllable
+ // Consonant3 + C/I/J/X: close syllable
+ EConsonant3 = 3,
+ // Consonant + D: add and move to ConsonantVowel
+ // Consonant + N: add
+ // Consonant + V: add and close syllable
+ // Consonant + S: add and close syllable
+ // Consonant + C/I/J/X: close syllable
+ EConsonant4 = 4,
+ // IndependentVowel + S: add
+ // IndependentVowel + D/V/N/I/C/J/X: close syllable
+ EIndependentVowel = 5,
+ // Virama + C: add and move to Consonant
+ // Virama + J: add and close syllable
+ // Virama + N/V/D/I/S/X: close syllable
+ EVirama = 6,
+ // Virama2 + C: add and move to Consonant3
+ // Virama2 + J: add and close syllable
+ // Virama2 + N/V/D/I/S/X: close syllable
+ EVirama2 = 7,
+ // Virama3 + C: add and move to Consonant4
+ // Virama3 + J: add and close syllable
+ // Virama3 + N/V/D/I/S/X: close syllable
+ EVirama3 = 8,
+ // Virama4 + J: add and close syllable
+ // Virama4 + CN/V/D/I/S/X: close syllable
+ EVirama4 = 9,
+ // ConsonantVowel + S: add
+ // ConsonantVowel + D/V/N/I/C/J/X: close syllable
+ EConsonantVowel = 10,
+ // NuktaConsonant + D/V: add
+ // NuktaConsonant + S/N/I/C/J/X: close syllable
+ ENuktaConsonant = 11,
+ // NuktaConsonant + D/V: add
+ // NuktaConsonant + S/N/I/C/J/X: close syllable
+ ENuktaConsonant2 = 12,
+ // NuktaConsonant + D/V: add
+ // NuktaConsonant + S/N/I/C/J/X: close syllable
+ ENuktaConsonant3 = 13,
+ // NuktaConsonant + D: add
+ // NuktaConsonant + V/S/N/I/C/J/X: close syllable
+ ENuktaConsonant4 = 14,
+ // IndependentVowelA + CANDRA E: add
+ // IndependentVowelA + anything else: close syllable
+ EIndependentVowelA = 15,
+ // ZeroWidthJoinerC + V: add
+ // ZeroWidthJoinerC + C/S/N/I/J/X/D: close syllable
+ EZeroWidthJoinerC = 16,
+ // ZeroWidthJoinerA + CANDRA E: add
+ // ZeroWidthJoinerA +anything else: close syllable
+ EZeroWidthJoinerA = 17,
+ // ZeroWidthJoinerV + C/N: add
+ // ZeroWidthJoinerV + anything else: close syllable
+ EZeroWidthJoinerV = 18,
+ // ZeroWidthJoinerV2 + C/N: add
+ // ZeroWidthJoinerV2 + anything else: close syllable
+ EZeroWidthJoinerV2 = 19,
+ // ZeroWidthJoinerV3 + C/N: add
+ // ZeroWidthJoinerV3 + anything else: close syllable
+ EZeroWidthJoinerV3 =20,
+ // EKannadaRa + C/N/V/ZWJ(C): add
+ EKannadaRa = 21,
+ // ESplitVowel1 + SV2: add and close syllable
+ // ESPlitVowel1 + anything else: close syllable
+ ESplitVowel1 = 22,
+ //EGurBearerA + EIndicCodeGurDependentVowelA: add and move to EIndependentVowel
+ //EGurBearerA + modifier: add and close syllable
+ //EGurBearerA + anything else: close syllable
+ EGurBearerA = 23,
+ //EGurBearerU + EIndicCodeGurDependentVowelU: add and move to EIndependentVowel
+ //EGurBearerU + anything else: close syllable
+ EGurBearerU = 24,
+ //EGurBearerI + EIndicCodeGurDependentVowelI: add and move to EIndependentVowel
+ //EGurBearerI + anything else: close syllable
+ EGurBearerI = 25,
+
+ EConsonantMalaChillu = 26,
+ EConsonantMalaChillu2 = 27,
+ EConsonantMalaChillu3 = 28,
+ EViramaMalaChillu = 29,
+ EViramaMalaChillu2 = 30,
+ EViramaMalaChillu3 = 31,
+ EConsonantMalaChilluNA = 32,
+ EConsonantMalaChilluNA2 = 33,
+ EConsonantMalaChilluNA3 = 34,
+ EViramaMalaChilluNA = 35,
+ EViramaMalaChilluNA2 = 36,
+ EViramaMalaChilluNA3 = 37,
+ EZeroWidthJoinerMalaChilluNA = 38,
+ EZeroWidthJoinerMalaChilluNA2 = 39,
+ EZeroWidthJoinerMalaChilluNA3 = 40,
+ // Add and close acceptances go here.
+ EAccept = 41
+ };
+
+/** Defines the transitions for a state machine for determining syllable
+boundaries. The machine starts in state 0. On receiving a character of type t
+while in state s, moves to state KStateResponse[s][t]. */
+const TSyllableState KStateResponse[42][24] =
+ {
+ // EBegin -- nothing added yet
+ {EAccept, EAccept, EIndependentVowel, EConsonant, EAccept, EAccept, EAccept, EAccept, ENuktaConsonant, EIndependentVowelA, EAccept, EKannadaRa, EAccept, EAccept, EAccept, EGurBearerA, EGurBearerU, EGurBearerI, EAccept, EAccept, EAccept, EConsonantMalaChillu,EConsonantMalaChilluNA,EConsonant},
+ // EConsonant -- seen a consonant either at the start or after virama
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama, ENuktaConsonant, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // EConsonant2 -- seen a consonant after virama
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama2, ENuktaConsonant2, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // EConsonant3 -- seen a consonant after virama2
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama3, ENuktaConsonant3, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // EConsonant4 -- seen a consonant after virama3
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama4, ENuktaConsonant4, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // EIndependentVowel -- possibly nasalized. I haven't bothered to distinguish between
+ // nasalization and visarga.
+ {EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonantVowel, EReject, EReject, EReject, EReject, EReject, EReject, EReject,EReject,EReject},
+ // EVirama -- just seen a virama in a legal context. Must be consonant or ZWJ next
+ {EReject, EReject, EReject, EConsonant2, EReject, EReject, EReject, EZeroWidthJoinerV, ENuktaConsonant2, EReject, EReject, EConsonant2, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonantMalaChillu2,EConsonantMalaChilluNA2,EConsonant2},
+ // EVirama2 -- just seen a virama in a legal context. Must be consonant2
+ {EReject, EReject, EReject, EConsonant3, EReject, EReject, EReject, EZeroWidthJoinerV2, ENuktaConsonant3, EReject, EReject, EConsonant3, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonantMalaChillu3,EConsonantMalaChilluNA3,EConsonant3},
+ // EVirama3 -- just seen a virama in a legal context. Must be consonant3
+ {EReject, EReject, EReject, EConsonant4, EReject, EReject, EReject, EZeroWidthJoinerV3, ENuktaConsonant4, EReject, EReject, EConsonant4, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonant4,EConsonant4,EConsonant4},
+ // EVirama4 -- just seen a virama in a legal context. Must be consonant4
+ {EReject, EReject, EReject, EReject, EReject, EReject, EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject,EReject,EReject},
+ // EConsonantVowel -- Just seen a consonant with matra. Can only nasalize or visarg
+ {EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject,EReject,EReject},
+ // ENuktaConsonant -- Just seen a consonant with Nukta. Can only accept a dependant vowel or a Virama at this stage.
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama, EReject, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // ENuktaConsonant2 -- Just seen a consonant with Nukta after a virama.
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama2, EReject, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // ENuktaConsonant3 -- Just seen a consonant with Nukta after Virama2.
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama3, EReject, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // ENuktaConsonant4 -- Just seen a consonant with Nukta after Virama3.
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama4, EReject, EReject, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // EIndependentVowelA -- Special case Devanagari independent vowel
+ {EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EZeroWidthJoinerA, EReject, EReject, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // EZeroWidthJoinerC -- Just seen a ZWJ after a consonant
+ {EReject, EReject, EReject, EReject, EReject, EVirama, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject,EReject,EReject},
+ // EZeroWidthJoinerA -- Just seen a ZWJ after the dependent Vowel A
+ {EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject,EReject,EReject},
+ // EZeroWidthJoinerV -- Just seen the ZWJ after the first pair of consonant + virama
+ {EReject, EAccept, EReject, EConsonant2, EReject, EReject, EReject, EReject, ENuktaConsonant2, EReject, EReject, EConsonant2, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonantMalaChillu2,EConsonantMalaChilluNA2,EConsonant2},
+ // EZeroWidthJoinerV2 -- Just seen the ZWJ after consonant + virama + consonant + virama
+ {EReject, EAccept, EReject, EConsonant3, EReject, EReject, EReject, EReject, ENuktaConsonant3, EReject, EReject, EConsonant3, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonantMalaChillu3,EConsonantMalaChilluNA3,EConsonant3},
+ // EZeroWidthJoinerV3 -- Just seen the ZWJ after consonant + virama + consonant + virama + consonant + virama
+ {EReject, EAccept, EReject, EConsonant4, EReject, EReject, EReject, EReject, ENuktaConsonant4, EReject, EReject, EConsonant4, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonant4,EConsonant4,EConsonant4},
+ // EKannadaRa -- Special case consonant
+ {EReject, EAccept, EReject, EReject, EConsonantVowel, EVirama, ENuktaConsonant, EZeroWidthJoinerC, EReject, EReject, EConsonantVowel, EReject, ESplitVowel1, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EConsonantVowel, EReject,EReject,EReject},
+ // ESplitVowel1 -- Just seen a consonant with first part of a split vowel. Can only nasalize, visarg or add second part of splt vowel
+ {EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EConsonantVowel, EConsonantVowel, EReject, EReject, EReject, EReject, EReject, EReject, EReject,EReject,EReject},
+ // EGurBearerA -- Just seen a dependent Vowel EIndicCodeGurDependentVowelA and modifier
+ {EReject, EAccept, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EIndependentVowel, EReject, EReject, EReject,EReject,EReject},
+ // EGurBearerU -- Just seen a dependent Vowel EIndicCodeGurDependentVowelU
+ {EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EIndependentVowel, EReject, EReject,EReject,EReject},
+ // EGurBearerI -- Just seen a dependent Vowel EIndicCodeGurDependentVowelI
+ {EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EIndependentVowel, EReject,EReject,EReject},
+
+ {EReject,EAccept,EReject,EReject,EConsonantVowel,EViramaMalaChillu,EReject,EReject,EReject,EReject,EReject,EReject,ESplitVowel1,EConsonantVowel,EConsonantVowel,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject},
+ {EReject,EAccept,EReject,EReject,EConsonantVowel,EViramaMalaChillu2,EReject,EReject,EReject,EReject,EReject,EReject,ESplitVowel1,EConsonantVowel,EConsonantVowel,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject},
+ {EReject,EAccept,EReject,EReject,EConsonantVowel,EViramaMalaChillu3,EReject,EReject,EReject,EReject,EReject,EReject,ESplitVowel1,EConsonantVowel,EConsonantVowel,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject},
+ {EReject,EReject,EReject,EConsonant2,EReject,EReject,EReject,EAccept,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonantMalaChillu2,EConsonantMalaChilluNA2,EConsonant2},
+ {EReject,EReject,EReject,EConsonant3,EReject,EReject,EReject,EAccept,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonantMalaChillu3,EConsonantMalaChilluNA3,EConsonant3},
+ {EReject,EReject,EReject,EConsonant4,EReject,EReject,EReject,EAccept,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonant4,EConsonant4,EConsonant4},
+ {EReject,EAccept,EReject,EReject,EConsonantVowel,EViramaMalaChilluNA,EReject,EReject,EReject,EReject,EReject,EReject,ESplitVowel1,EConsonantVowel,EConsonantVowel,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject},
+ {EReject,EAccept,EReject,EReject,EConsonantVowel,EViramaMalaChilluNA2,EReject,EReject,EReject,EReject,EReject,EReject,ESplitVowel1,EConsonantVowel,EConsonantVowel,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject},
+ {EReject,EAccept,EReject,EReject,EConsonantVowel,EViramaMalaChilluNA3,EReject,EReject,EReject,EReject,EReject,EReject,ESplitVowel1,EConsonantVowel,EConsonantVowel,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject},
+ {EReject,EReject,EReject,EConsonant2,EReject,EReject,EReject,EZeroWidthJoinerMalaChilluNA,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonantMalaChillu2,EConsonantMalaChilluNA2,EConsonant2},
+ {EReject,EReject,EReject,EConsonant3,EReject,EReject,EReject,EZeroWidthJoinerMalaChilluNA2,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonantMalaChillu3,EConsonantMalaChilluNA3,EConsonant3},
+ {EReject,EReject,EReject,EConsonant4,EReject,EReject,EReject,EZeroWidthJoinerMalaChilluNA3,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonant4,EConsonant4,EConsonant4},
+ {EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonant2},
+ {EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonant3},
+ {EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EReject,EConsonant4},
+
+ // EAccept -- this one is added but anything further is rejected
+ {EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject, EReject}
+ };
+
+TIndicCodeType CodeType(TInt aCode, const TIndicCodeMapping aCodeMap[], TInt aMapLen)
+ {
+ TInt start = 0;
+ TInt end = aMapLen - 1;
+ while (start != end)
+ {
+ const TInt mid = (start + end + 1) >> 1;
+ if (aCodeMap[mid].iFirstCodeInRange <= aCode)
+ start = mid;
+ else
+ end = mid - 1;
+ }
+ return static_cast<TIndicCodeType>(aCodeMap[start].iCodeType);
+ }
+
+const TText16* SyllableEnd(const TText16* aCurrentPosition,
+ const TText16* aEnd, const TIndicCodeMapping aCodeMap[], TInt aMapLen)
+ {
+ TSyllableState state = EBegin;
+ while (aCurrentPosition != aEnd)
+ {
+ const TIndicCodeType ct = CodeType(*aCurrentPosition, aCodeMap, aMapLen);
+ state = KStateResponse[state][ct];
+ if (state == EReject)
+ return aCurrentPosition;
+ ++aCurrentPosition;
+ }
+ return aCurrentPosition;
+ }
+
+/**
+Common function for all Indic scripts.
+Performs the shaping operation on Indic script text up to KMaxTextToShape.
+*/
+TInt IndicShapingProcess(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo,
+ const TIndicCodeMapping aCodeMap[], TInt aMapLen, const TUint aHighChar,
+ const TUint aLowChar, const TUint32 aScript, const TUint32 aLang)
+ {
+ const TText16* startCharacter = aGss.iParam.iText.Ptr();
+ const TText16* endCharacter = startCharacter + aGss.iParam.iText.Length();
+ const TText16* currentCharacter = aGss.iText.CurrentPosition();
+ TInt currentPosition = currentCharacter - startCharacter;
+
+ // Do some new shaping
+
+ // First close the existing RShapeInfo
+ if(aShapeInfo.IsOpen())
+ aShapeInfo.Close();
+
+ // Find the end of Indic text whilst limiting the amount of text to be shaped to
+ // KMaxTextToShape. When finding the end of end position of the text to be shaped,
+ // include numerals, punctuations and other control characters.
+ const TText16* endIndic = currentCharacter;
+ TChar endIndicChar = *endIndic;
+ while((endIndic <= endCharacter || endIndic - currentCharacter <= KMaxTextToShape) &&
+ ((*endIndic >= aLowChar && *endIndic <= aHighChar) ||
+ ((endIndicChar.IsDigit() || endIndicChar.IsPunctuation()) && !QuoteOrBracketPair(*endIndic))))
+ {
+ if (endIndic == endCharacter || endIndic - currentCharacter > KMaxTextToShape)
+ break;
+ endIndic = SyllableEnd(endIndic, endCharacter, aCodeMap, aMapLen);
+ endIndicChar = *endIndic;
+ }
+
+ TInt endPosForShaping = endIndic - startCharacter;
+
+ //Now shape from current position to the end of Hindi
+ return aShapeInfo.Open(aGss.iFont, aGss.iParam.iText,
+ currentPosition, endPosForShaping, aScript, aLang);
+ }
+
+/**
+Common function for all Indic scripts. Adds the shaped glyphs to the glyph cluster.
+This function is called regardless of whether shaping was done or skipped in this
+iteration of the Default Process
+*/
+TBool IndicPostShapingProcess(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo,
+ TInt aCurrPos, TInt aSyllEndPos, const TText16* aSyllableEnd)
+ {
+ // Now get all the shaped values
+ // Get the number of glyphs, glyphs, positions and indices after shaping.
+ TInt numGlyphs = aShapeInfo.GlyphCount();
+ const TInt32* glyph = aShapeInfo.Glyphs();
+ const RShapeInfo::TPoint16* position = aShapeInfo.GlyphPositions();
+ const TInt16* indices = aShapeInfo.Indices();
+ TPoint origin;
+
+ // Shift the indices and positions until the current poisition is reached. This done so that the
+ // origin can be set back to the original co-ordinates at the start of this Hindi text
+ while (*indices < aCurrPos)
+ {
+ position++;
+ indices++;
+ }
+ // Set the origin back by subtracting the current position co-ordinates from the current pen position
+ origin.iX = aGss.iParam.iPen.iX - position->iX;
+ origin.iY = aGss.iParam.iPen.iY - position->iY;
+
+ // No re-initialise the indices and positions to start appending the glyphs to clusters from the beginning
+ indices = aShapeInfo.Indices();
+ position = aShapeInfo.GlyphPositions();
+
+ // Now do some post shaping syllable chopping
+ for (TInt i = 0; i < numGlyphs; i++, glyph++, position++, indices++)
+ {
+ if(*indices >= aSyllEndPos)
+ break;
+ if(*indices >= aCurrPos && *indices < aSyllEndPos)
+ {
+ aGss.iParam.iPen.iX = origin.iX + position->iX;
+ aGss.iParam.iPen.iY = origin.iY + position->iY;
+
+ //Just skip the non-existing glyph and continue handling other glyphs if AppendGlyphToCluster return false.
+ // The "continue" statement is for avoiding the potential risk of handling the non-existing glyph.
+ if (!aGss.AppendGlyphToCluster(0x80000000UL | *glyph))
+ continue;
+ }
+ }
+
+ // We'll do pen advance ourselves, thanks.
+ aGss.iPen = TGlyphSelectionState::EPenAdvance_No;
+ aGss.iParam.iPen.iX = origin.iX + position->iX;
+ aGss.iParam.iPen.iY = origin.iY + position->iY;
+ aGss.iClusterState = TGlyphSelectionState::EGClusterComplete;
+ aGss.iText.SetCurrentPosition(aSyllableEnd);
+ return ETrue;
+ }
+
+/**
+Common function for all Indic scripts.
+Performs shaping and Rasterizing operation on Indic script text
+*/
+TBool DoProcess(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo, const TIndicScriptProcessorParameters& aScriptSpecificParameters){
+ const TText16* startCharacter = aGss.iParam.iText.Ptr();
+ const TText16* endCharacter = startCharacter + aGss.iParam.iText.Length();
+ const TText16* currentCharacter = aGss.iText.CurrentPosition();
+ TInt currentPosition = currentCharacter - startCharacter;
+
+ // Get the logical end of the syllable from the input text. We will use this later to chop
+ // syllables from the glyph values we get.
+ const TText16* syllableEnd = SyllableEnd(currentCharacter, endCharacter, aScriptSpecificParameters.iCodeMap,
+ aScriptSpecificParameters.iMapLen);
+ TInt syllableEndPos = syllableEnd - startCharacter;
+
+ TInt ret = KErrNone;
+ if(currentPosition >= aShapeInfo.EndOfShapedText())
+ ret = IndicShapingProcess(aGss, aShapeInfo, aScriptSpecificParameters.iCodeMap, aScriptSpecificParameters.iMapLen,
+ aScriptSpecificParameters.iUCHigh, aScriptSpecificParameters.iUCLow, aScriptSpecificParameters.iScriptCode, aScriptSpecificParameters.iLanguageCode);
+
+ // If an RShapeInfo could not be opened, call the default process
+ if (ret != KErrNone)
+ return GlyphSelector_Default::Process(aGss, aShapeInfo);
+
+ // Now call the post shaping process to add glyphs to the glyph cluster
+ return IndicPostShapingProcess(aGss, aShapeInfo, currentPosition, syllableEndPos, syllableEnd);
+}
+
+/*************************************************** D E V A N A G A R I ***************************************************/
+TBool GlyphSelector_Devanagari::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicDevParameters);
+ }
+
+/***************************************************** K A N N A D A ******************************************************/
+TBool GlyphSelector_Kannada::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicKanParameters);
+ }
+
+/***************************************************** G U J A R A T I ******************************************************/
+TBool GlyphSelector_Gujarati::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicGujParameters);
+ }
+
+/***************************************************** B E N G A L I ******************************************************/
+TBool GlyphSelector_Bengali::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicBenParameters);
+ }
+
+/***************************************************** T A M I L ******************************************************/
+TBool GlyphSelector_Tamil::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicTamParameters);
+ }
+
+/***************************************************** T E L U G U ******************************************************/
+TBool GlyphSelector_Telugu::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicTelParameters);
+ }
+
+/***************************************************** G U R M U K H I ******************************************************/
+TBool GlyphSelector_Gurmukhi::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)\
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicGurParameters);
+ }
+
+/***************************************************** M A L A Y A L A M ******************************************************/
+TBool GlyphSelector_Malayalam::Process(TGlyphSelectionState& aGss, RShapeInfo& aShapeInfo)
+ {
+ return DoProcess(aGss, aShapeInfo, KIndicMalParameters);
+ }
+