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path: root/xfa/src/fgas/src/layout/fx_unicode.cpp
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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "../fgas_base.h"
#include "fx_unicode.h"
void FX_TEXTLAYOUT_PieceSort(CFX_TPOArray &tpos, int32_t iStart, int32_t iEnd)
{
    FXSYS_assert(iStart > -1 && iStart < tpos.GetSize());
    FXSYS_assert(iEnd > -1 && iEnd < tpos.GetSize());
    if (iStart >= iEnd) {
        return;
    }
    int32_t i = iStart, j = iEnd;
    FX_TPO *pCur = tpos.GetPtrAt(iStart), *pSort;
    int32_t v = pCur->pos;
    while (i < j) {
        while (j > i) {
            pSort = tpos.GetPtrAt(j);
            if (pSort->pos < v) {
                FX_TPO t = *pSort;
                *pSort = *pCur;
                *pCur = t;
                pCur = pSort;
                break;
            }
            j --;
        }
        while (i < j) {
            pSort = tpos.GetPtrAt(i);
            if (pSort->pos > v) {
                FX_TPO t = *pSort;
                *pSort = *pCur;
                *pCur = t;
                pCur = pSort;
                break;
            }
            i ++;
        }
    }
    i --, j ++;
    if (iStart < i) {
        FX_TEXTLAYOUT_PieceSort(tpos, iStart, i);
    }
    if (j < iEnd) {
        FX_TEXTLAYOUT_PieceSort(tpos, j, iEnd);
    }
}
static const FX_JAPCHARPROPERTYEX gs_FX_JapCharPropertysEx[] = {
    {0x3001, 0x13},
    {0x3002, 0x13},
    {0x3041, 0x23},
    {0x3043, 0x23},
    {0x3045, 0x23},
    {0x3047, 0x23},
    {0x3049, 0x23},
    {0x3063, 0x23},
    {0x3083, 0x23},
    {0x3085, 0x23},
    {0x3087, 0x23},
    {0x308E, 0x23},
    {0x3095, 0x23},
    {0x3096, 0x23},
    {0x30A1, 0x23},
    {0x30A3, 0x23},
    {0x30A5, 0x23},
    {0x30A7, 0x23},
    {0x30A9, 0x23},
    {0x30C3, 0x23},
    {0x30E3, 0x23},
    {0x30E5, 0x23},
    {0x30E7, 0x23},
    {0x30EE, 0x23},
    {0x30F5, 0x23},
    {0x30F6, 0x23},
    {0x30FB, 0x22},
    {0x31F0, 0x23},
    {0x31F1, 0x23},
    {0x31F2, 0x23},
    {0x31F3, 0x23},
    {0x31F4, 0x23},
    {0x31F5, 0x23},
    {0x31F6, 0x23},
    {0x31F7, 0x23},
    {0x31F8, 0x23},
    {0x31F9, 0x23},
    {0x31FA, 0x23},
    {0x31FB, 0x23},
    {0x31FC, 0x23},
    {0x31FD, 0x23},
    {0x31FE, 0x23},
    {0x31FF, 0x23},
};
FX_LPCJAPCHARPROPERTYEX FX_GetJapCharPropertyEx(FX_WCHAR wch)
{
    int32_t iStart = 0;
    int32_t iEnd = sizeof(gs_FX_JapCharPropertysEx) / sizeof(FX_JAPCHARPROPERTYEX);
    while (iStart <= iEnd) {
        int32_t iMid = (iStart + iEnd) / 2;
        FX_WCHAR wJapChar = gs_FX_JapCharPropertysEx[iMid].wChar;
        if (wch == wJapChar) {
            return gs_FX_JapCharPropertysEx + iMid;
        } else if (wch < wJapChar) {
            iEnd = iMid - 1;
        } else {
            iStart = iMid + 1;
        }
    }
    return NULL;
}
FX_BOOL FX_AdjustJapCharDisplayPos(FX_WCHAR wch, FX_BOOL bMBCSCode, IFX_Font *pFont, FX_FLOAT fFontSize, FX_BOOL bVertical, CFX_PointF &ptOffset)
{
    if (pFont == NULL || !bVertical)	{
        return FALSE;
    }
    if (wch < 0x3001 || wch > 0x31FF)	{
        return FALSE;
    }
    FX_LPCJAPCHARPROPERTYEX pJapChar = FX_GetJapCharPropertyEx(wch);
    if (pJapChar == NULL) {
        return FALSE;
    }
    CFX_Rect rtBBox;
    rtBBox.Reset();
    if (pFont->GetCharBBox(wch, rtBBox, bMBCSCode)) {
        switch (pJapChar->uAlign & 0xF0) {
            case FX_JAPCHARPROPERTYEX_Top:
                ptOffset.y = fFontSize * (1000 - rtBBox.height) / 1200.0f;
                break;
            case FX_JAPCHARPROPERTYEX_Middle:
                ptOffset.y = fFontSize * (1000 - rtBBox.height) / 6000.0f;
                break;
        }
        switch (pJapChar->uAlign & 0x0F) {
            case FX_JAPCHARPROPERTYEX_Center:
                ptOffset.x = fFontSize * (600 - rtBBox.right()) / 1000.0f;
                break;
            case FX_JAPCHARPROPERTYEX_Right:
                ptOffset.x = fFontSize * (950 - rtBBox.right()) / 1000.0f;
                break;
        }
    }
    return TRUE;
}