--- a/graphicsdeviceinterface/gdi/sgdi/FontIndic.cpp Thu Sep 02 21:50:40 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,432 +0,0 @@
-// Copyright (c) 2005-2009 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 "FontIndic.h"
-#include <gdi.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);
- }
-