qtextboundaryfinder.cpp File Reference

#include <QtCore/qtextboundaryfinder.h>
#include <QtCore/qvarlengtharray.h>
#include <private/qunicodetables_p.h>
#include <qdebug.h>
#include "private/qharfbuzz_p.h"

Go to the source code of this file.

Classes
class	QTextBoundaryFinderPrivate

Functions
static void	init (QTextBoundaryFinder::BoundaryType type, const QChar *chars, int length, HB_CharAttributes *attributes)

Function Documentation

init()

static void init ( QTextBoundaryFinder::BoundaryType  type, const QChar *  chars, int  length, HB_CharAttributes *  attributes  )

static

Definition at line 55 of file qtextboundaryfinder.cpp.

Referenced by QTextBoundaryFinder::QTextBoundaryFinder().

{
    QVarLengthArray<HB_ScriptItem> scriptItems;

    const ushort *string = reinterpret_cast<const ushort *>(chars);
    const ushort *unicode = string;
    // correctly assign script, isTab and isObject to the script analysis
    const ushort *uc = unicode;
    const ushort *e = uc + length;
    int script = QUnicodeTables::Common;
    int lastScript = QUnicodeTables::Common;
    const ushort *start = uc;
    while (uc < e) {
        int s = QUnicodeTables::script(*uc);
        if (s != QUnicodeTables::Inherited)
            script = s;
        if (*uc == QChar::ObjectReplacementCharacter || *uc == QChar::LineSeparator || *uc == 9) 
            script = QUnicodeTables::Common;
        if (script != lastScript) {
            if (uc != start) {
                HB_ScriptItem item;
                item.pos = start - string;
                item.length = uc - start;
                item.script = (HB_Script)lastScript;
                item.bidiLevel = 0; // ### what's the proper value?
                scriptItems.append(item);
                start = uc;
            }
            lastScript = script;
        }
        ++uc;
    }
    if (uc != start) {
        HB_ScriptItem item;
        item.pos = start - string;
        item.length = uc - start;
        item.script = (HB_Script)lastScript;
        item.bidiLevel = 0; // ### what's the proper value?
        scriptItems.append(item);
    }

    qGetCharAttributes(string, length, scriptItems.data(), scriptItems.count(), attributes);
    if (type == QTextBoundaryFinder::Word)
        HB_GetWordBoundaries(string, length, scriptItems.data(), scriptItems.count(), attributes);
    else if (type == QTextBoundaryFinder::Sentence)
        HB_GetSentenceBoundaries(string, length, scriptItems.data(), scriptItems.count(), attributes);
}