C++ HPDF_Dict_Add函数代码示例

HPDF_Page
HPDF_Page_New  (HPDF_MMgr   mmgr,
                HPDF_Xref   xref)
{
    HPDF_STATUS ret;
    HPDF_PageAttr attr;
    HPDF_Page page;

    HPDF_PTRACE((" HPDF_Page_New\n"));

    page = HPDF_Dict_New (mmgr);
    if (!page)
        return NULL;

    page->header.obj_class |= HPDF_OSUBCLASS_PAGE;
    page->free_fn = Page_OnFree;
    page->before_write_fn = Page_BeforeWrite;

    attr = HPDF_GetMem (page->mmgr, sizeof(HPDF_PageAttr_Rec));
    if (!attr) {
        HPDF_Dict_Free (page);
        return NULL;
    }

    page->attr = attr;
    HPDF_MemSet (attr, 0, sizeof(HPDF_PageAttr_Rec));
    attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
    attr->cur_pos = HPDF_ToPoint (0, 0);
    attr->text_pos = HPDF_ToPoint (0, 0);

    ret = HPDF_Xref_Add (xref, page);
    if (ret != HPDF_OK)
        return NULL;

    attr->gstate = HPDF_GState_New (page->mmgr, NULL);
    attr->contents = HPDF_DictStream_New (page->mmgr, xref);

    if (!attr->gstate || !attr->contents)
        return NULL;

    attr->stream = attr->contents->stream;
    attr->xref = xref;

    /* add requiered elements */
    ret += HPDF_Dict_AddName (page, "Type", "Page");
    ret += HPDF_Dict_Add (page, "MediaBox", HPDF_Box_Array_New (page->mmgr,
                HPDF_ToBox (0, 0, HPDF_DEF_PAGE_WIDTH, HPDF_DEF_PAGE_HEIGHT)));
    ret += HPDF_Dict_Add (page, "Contents", attr->contents);

    ret += AddResource (page);

    if (ret != HPDF_OK)
        return NULL;

    return page;
}

const char*
HPDF_Page_GetLocalFontName  (HPDF_Page  page,
                             HPDF_Font  font)
{
    HPDF_PageAttr attr = (HPDF_PageAttr )page->attr;
    const char *key;

    HPDF_PTRACE((" HPDF_Page_GetLocalFontName\n"));

    /* whether check font-resource exists.  when it does not exists,
     * create font-resource
     * 2006.07.21 Fixed a problem which may cause a memory leak.
     */
    if (!attr->fonts) {
        HPDF_Dict resources;
        HPDF_Dict fonts;

        resources = HPDF_Page_GetInheritableItem (page, "Resources",
                        HPDF_OCLASS_DICT);
        if (!resources)
            return NULL;

        fonts = HPDF_Dict_New (page->mmgr);
        if (!fonts)
            return NULL;

        if (HPDF_Dict_Add (resources, "Font", fonts) != HPDF_OK)
            return NULL;

        attr->fonts = fonts;
    }

    /* search font-object from font-resource */
    key = HPDF_Dict_GetKeyByObj (attr->fonts, font);
    if (!key) {
        /* if the font is not resisterd in font-resource, register font to
         * font-resource.
         */
        char fontName[HPDF_LIMIT_MAX_NAME_LEN + 1];
        char *ptr;
        char *end_ptr = fontName + HPDF_LIMIT_MAX_NAME_LEN;

        ptr = (char *)HPDF_StrCpy (fontName, "F", end_ptr);
        HPDF_IToA (ptr, attr->fonts->list->count + 1, end_ptr);

        if (HPDF_Dict_Add (attr->fonts, fontName, font) != HPDF_OK)
            return NULL;

        key = HPDF_Dict_GetKeyByObj (attr->fonts, font);
    }

    return key;
}

static HPDF_STATUS
PrepareTrailer  (HPDF_Doc    pdf)
{
    HPDF_PTRACE ((" PrepareTrailer\n"));

    if (HPDF_Dict_Add (pdf->trailer, "Root", pdf->catalog) != HPDF_OK)
        return pdf->error.error_no;

    if (HPDF_Dict_Add (pdf->trailer, "Info", pdf->info) != HPDF_OK)
        return pdf->error.error_no;

    return HPDF_OK;
}

const char*
HPDF_Page_GetXObjectName  (HPDF_Page     page,
                           HPDF_XObject  xobj)
{
    HPDF_PageAttr attr = (HPDF_PageAttr )page->attr;
    const char *key;

    HPDF_PTRACE((" HPDF_Page_GetXObjectName\n"));

    if (!attr->xobjects) {
        HPDF_Dict resources;
        HPDF_Dict xobjects;

        resources = HPDF_Page_GetInheritableItem (page, "Resources",
                        HPDF_OCLASS_DICT);
        if (!resources)
            return NULL;

        xobjects = HPDF_Dict_New (page->mmgr);
        if (!xobjects)
            return NULL;

        if (HPDF_Dict_Add (resources, "XObject", xobjects) != HPDF_OK)
            return NULL;

        attr->xobjects = xobjects;
    }

    /* search xobject-object from xobject-resource */
    key = HPDF_Dict_GetKeyByObj (attr->xobjects, xobj);
    if (!key) {
        /* if the xobject is not resisterd in xobject-resource, register
         * xobject to xobject-resource.
         */
        char xobj_name[HPDF_LIMIT_MAX_NAME_LEN + 1];
        char *ptr;
        char *end_ptr = xobj_name + HPDF_LIMIT_MAX_NAME_LEN;

        ptr = (char *)HPDF_StrCpy (xobj_name, "X", end_ptr);
        HPDF_IToA (ptr, attr->xobjects->list->count + 1, end_ptr);

        if (HPDF_Dict_Add (attr->xobjects, xobj_name, xobj) != HPDF_OK)
            return NULL;

        key = HPDF_Dict_GetKeyByObj (attr->xobjects, xobj);
    }

    return key;
}

const char*
HPDF_Page_GetExtGStateName  (HPDF_Page       page,
                             HPDF_ExtGState  state)
{
    HPDF_PageAttr attr = (HPDF_PageAttr )page->attr;
    const char *key;

    HPDF_PTRACE((" HPDF_Page_GetExtGStateName\n"));

    if (!attr->ext_gstates) {
        HPDF_Dict resources;
        HPDF_Dict ext_gstates;

        resources = HPDF_Page_GetInheritableItem (page, "Resources",
                        HPDF_OCLASS_DICT);
        if (!resources)
            return NULL;

        ext_gstates = HPDF_Dict_New (page->mmgr);
        if (!ext_gstates)
            return NULL;

        if (HPDF_Dict_Add (resources, "ExtGState", ext_gstates) != HPDF_OK)
            return NULL;

        attr->ext_gstates = ext_gstates;
    }

    /* search ext_gstate-object from ext_gstate-resource */
    key = HPDF_Dict_GetKeyByObj (attr->ext_gstates, state);
    if (!key) {
        /* if the ext-gstate is not resisterd in ext-gstate resource, register
         *  to ext-gstate resource.
         */
        char ext_gstate_name[HPDF_LIMIT_MAX_NAME_LEN + 1];
        char *ptr;
        char *end_ptr = ext_gstate_name + HPDF_LIMIT_MAX_NAME_LEN;

        ptr = (char *)HPDF_StrCpy (ext_gstate_name, "E", end_ptr);
        HPDF_IToA (ptr, attr->ext_gstates->list->count + 1, end_ptr);

        if (HPDF_Dict_Add (attr->ext_gstates, ext_gstate_name, state) != HPDF_OK)
            return NULL;

        key = HPDF_Dict_GetKeyByObj (attr->ext_gstates, state);
    }

    return key;
}

HPDF_STATUS
HPDF_EncryptDict_Prepare  (HPDF_EncryptDict  dict,
                           HPDF_Dict         info,
                           HPDF_Xref         xref)
{
    HPDF_STATUS ret;
    HPDF_Encrypt attr = (HPDF_Encrypt)dict->attr;
    HPDF_Binary user_key;
    HPDF_Binary owner_key;

    HPDF_PTRACE((" HPDF_EncryptDict_Prepare\n"));

    HPDF_EncryptDict_CreateID (dict, info, xref);
    HPDF_Encrypt_CreateOwnerKey (attr);
    HPDF_Encrypt_CreateEncryptionKey (attr);
    HPDF_Encrypt_CreateUserKey (attr);

    owner_key = HPDF_Binary_New (dict->mmgr, attr->owner_key, HPDF_PASSWD_LEN);
    if (!owner_key)
        return HPDF_Error_GetCode (dict->error);

    if ((ret = HPDF_Dict_Add (dict, "O", owner_key)) != HPDF_OK)
        return ret;

    user_key = HPDF_Binary_New (dict->mmgr, attr->user_key, HPDF_PASSWD_LEN);
    if (!user_key)
        return HPDF_Error_GetCode (dict->error);

    if ((ret = HPDF_Dict_Add (dict, "U", user_key)) != HPDF_OK)
        return ret;

    ret += HPDF_Dict_AddName (dict, "Filter", "Standard");

    if (attr->mode == HPDF_ENCRYPT_R2) {
        ret += HPDF_Dict_AddNumber (dict, "V", 1);
        ret += HPDF_Dict_AddNumber (dict, "R", 2);
    } else if (attr->mode == HPDF_ENCRYPT_R3) {
        ret += HPDF_Dict_AddNumber (dict, "V", 2);
        ret += HPDF_Dict_AddNumber (dict, "R", 3);
        ret += HPDF_Dict_AddNumber (dict, "Length", attr->key_len * 8);
    }

    ret += HPDF_Dict_AddNumber (dict, "P", attr->permission);

    if (ret != HPDF_OK)
        return HPDF_Error_GetCode (dict->error);

    return HPDF_OK;
}

HPDF_STATUS
HPDF_Image_SetMask (HPDF_Image   image,
                    HPDF_BOOL    mask)
{
    HPDF_Boolean image_mask;

    if (!HPDF_Image_Validate (image))
        return HPDF_INVALID_IMAGE;

    if (mask && HPDF_Image_GetBitsPerComponent (image) != 1)
        return HPDF_SetError (image->error, HPDF_INVALID_BIT_PER_COMPONENT,
                0);

    image_mask = HPDF_Dict_GetItem (image, "ImageMask", HPDF_OCLASS_BOOLEAN);
    if (!image_mask) {
        HPDF_STATUS ret;
        image_mask = HPDF_Boolean_New (image->mmgr, HPDF_FALSE);

        if ((ret = HPDF_Dict_Add (image, "ImageMask", image_mask)) != HPDF_OK)
            return ret;
    }

    image_mask->value = mask;
    return HPDF_OK;
}

HPDF_TextMarkupAnnot_SetQuadPoints ( HPDF_Annotation annot, HPDF_Point lb, HPDF_Point rb, HPDF_Point lt, HPDF_Point rt) /* l-left, r-right, b-bottom, t-top positions */
{
    HPDF_Array quadPoints;
    HPDF_STATUS ret = HPDF_OK;

    HPDF_PTRACE((" HPDF_TextMarkupAnnot_SetQuadPoints\n"));

    quadPoints = HPDF_Array_New ( annot->mmgr);
    if ( !quadPoints)
        return HPDF_Error_GetCode ( annot->error);

    if ((ret = HPDF_Dict_Add ( annot, "QuadPoints", quadPoints)) != HPDF_OK)
        return ret;

    ret += HPDF_Array_AddReal (quadPoints, lb.x);
    ret += HPDF_Array_AddReal (quadPoints, lb.y);
    ret += HPDF_Array_AddReal (quadPoints, rb.x);
    ret += HPDF_Array_AddReal (quadPoints, rb.y);
    ret += HPDF_Array_AddReal (quadPoints, lt.x);
    ret += HPDF_Array_AddReal (quadPoints, lt.y);
    ret += HPDF_Array_AddReal (quadPoints, rt.x);
    ret += HPDF_Array_AddReal (quadPoints, rt.y);

    if (ret != HPDF_OK)
       return HPDF_Error_GetCode (quadPoints->error);

    return HPDF_OK;
}

HPDF_Annotation
HPDF_StampAnnot_New (HPDF_MMgr         mmgr,
                     HPDF_Xref         xref,
                     HPDF_Rect         rect,
                     HPDF_StampAnnotName name,
                     const char*       text,
                     HPDF_Encoder       encoder)
{
    HPDF_Annotation annot;
    HPDF_String s;
    HPDF_PTRACE((" HPDF_StampAnnot_New\n"));

    annot = HPDF_Annotation_New (mmgr, xref, HPDF_ANNOT_STAMP, rect);
    if (!annot)
        return NULL;

    if (HPDF_Dict_AddName ( annot, "Name", HPDF_STAMP_ANNOT_NAME_NAMES[name]) != HPDF_OK)
        return NULL;

    s = HPDF_String_New (mmgr, text, encoder);
    if (!s)
        return NULL;

    if (HPDF_Dict_Add (annot, "Contents", s) != HPDF_OK)
        return NULL;

    return annot;
}

HPDF_MarkupAnnot_SetPopup (HPDF_Annotation  annot,
                           HPDF_Annotation  popup)
{
    HPDF_PTRACE((" HPDF_MarkupAnnot_SetPopup\n"));

    return HPDF_Dict_Add( annot, "Popup", popup);
}

HPDF_STATUS
Pages_BeforeWrite  (HPDF_Dict    obj)
{
    HPDF_Array kids = (HPDF_Array )HPDF_Dict_GetItem (obj, "Kids",
                    HPDF_OCLASS_ARRAY);
    HPDF_Number count = (HPDF_Number)HPDF_Dict_GetItem (obj, "Count",
                    HPDF_OCLASS_NUMBER);
    HPDF_STATUS ret;

    HPDF_PTRACE((" HPDF_Pages_BeforeWrite\n"));

    if (!kids)
        return HPDF_SetError (obj->error, HPDF_PAGES_MISSING_KIDS_ENTRY, 0);

    if (count)
        count->value = GetPageCount (obj);
    else {
        count = HPDF_Number_New (obj->mmgr, GetPageCount (obj));
        if (!count)
            return HPDF_Error_GetCode (obj->error);

        if ((ret = HPDF_Dict_Add (obj, "Count", count)) != HPDF_OK)
            return ret;
    }

    return HPDF_OK;
}

HPDF_LineAnnot_SetCaption (HPDF_Annotation annot, HPDF_BOOL showCaption, HPDF_LineAnnotCapPosition position, HPDF_INT horzOffset, HPDF_INT vertOffset)
{
    HPDF_STATUS ret = HPDF_OK;
    HPDF_Array capOffset;
    HPDF_PTRACE((" HPDF_LineAnnot_SetCaption\n"));

    ret += HPDF_Dict_AddBoolean ( annot, "Cap", showCaption);
    ret += HPDF_Dict_AddName( annot, "CP", HPDF_LINE_ANNOT_CAP_POSITION_NAMES[(HPDF_INT)position]);

    if (ret != HPDF_OK)
       return HPDF_Error_GetCode ( annot->error);

    capOffset = HPDF_Array_New ( annot->mmgr);
    if ( !capOffset)
        return HPDF_Error_GetCode ( annot->error);

    if ((ret = HPDF_Dict_Add ( annot, "CO", capOffset)) != HPDF_OK)
        return ret;

    ret += HPDF_Array_AddNumber (capOffset, horzOffset);
    ret += HPDF_Array_AddNumber (capOffset, vertOffset);

    if (ret != HPDF_OK)
       return HPDF_Error_GetCode (capOffset->error);

    return HPDF_OK;
}

HPDF_FreeTextAnnot_Set3PointCalloutLine ( HPDF_Annotation annot, HPDF_Point startPoint, HPDF_Point kneePoint, HPDF_Point endPoint) /* Callout line will be in default user space */
{
    HPDF_Array clPoints;
    HPDF_STATUS ret = HPDF_OK;

    HPDF_PTRACE((" HPDF_FreeTextAnnot_Set3PointCalloutLine\n"));

    clPoints = HPDF_Array_New ( annot->mmgr);
    if ( !clPoints)
        return HPDF_Error_GetCode ( annot->error);

    if ((ret = HPDF_Dict_Add ( annot, "CL", clPoints)) != HPDF_OK)
        return ret;

    ret += HPDF_Array_AddReal (clPoints, startPoint.x);
    ret += HPDF_Array_AddReal (clPoints, startPoint.y);
    ret += HPDF_Array_AddReal (clPoints, kneePoint.x);
    ret += HPDF_Array_AddReal (clPoints, kneePoint.y);
    ret += HPDF_Array_AddReal (clPoints, endPoint.x);
    ret += HPDF_Array_AddReal (clPoints, endPoint.y);

    if (ret != HPDF_OK)
       return HPDF_Error_GetCode (clPoints->error);

    return HPDF_OK;
}

HPDF_MarkupAnnot_SetRectDiff (HPDF_Annotation  annot, HPDF_Rect  rect) /* RD entry : this is the difference between Rect and the text annotation rectangle */
{
    HPDF_Array array;
    HPDF_STATUS ret = HPDF_OK;
    HPDF_REAL tmp;

    HPDF_PTRACE((" HPDF_MarkupAnnot_SetRectDiff\n"));

    array = HPDF_Array_New ( annot->mmgr);
    if ( !array)
        return HPDF_Error_GetCode ( annot->error);

    if ((ret = HPDF_Dict_Add ( annot, "RD", array)) != HPDF_OK)
        return ret;

    if (rect.top < rect.bottom) {
        tmp = rect.top;
        rect.top = rect.bottom;
        rect.bottom = tmp;
    }

    ret += HPDF_Array_AddReal (array, rect.left);
    ret += HPDF_Array_AddReal (array, rect.bottom);
    ret += HPDF_Array_AddReal (array, rect.right);
    ret += HPDF_Array_AddReal (array, rect.top);

    if (ret != HPDF_OK)
       return HPDF_Error_GetCode (array->error);

    return HPDF_OK;
}

/* Generate an ID for the trailer dict, PDF/A needs this.
   TODO: Better algorithm for generate unique ID.
*/
HPDF_STATUS
HPDF_PDFA_GenerateID(HPDF_Doc pdf)
{
    HPDF_Array id;
    HPDF_BYTE *currentTime;
    HPDF_BYTE idkey[HPDF_MD5_KEY_LEN];
    HPDF_MD5_CTX md5_ctx;
    time_t ltime;

    ltime = time(NULL);
    currentTime = (HPDF_BYTE *)ctime(&ltime);

    id = HPDF_Dict_GetItem(pdf->trailer, "ID", HPDF_OCLASS_ARRAY);
    if (!id) {
        id = HPDF_Array_New(pdf->mmgr);

        if (!id || HPDF_Dict_Add(pdf->trailer, "ID", id) != HPDF_OK)
            return pdf->error.error_no;

        HPDF_MD5Init(&md5_ctx);
        HPDF_MD5Update(&md5_ctx, (HPDF_BYTE *) "libHaru", sizeof("libHaru") - 1);
        HPDF_MD5Update(&md5_ctx, currentTime, HPDF_StrLen((const char *)currentTime, -1));
        HPDF_MD5Final(idkey, &md5_ctx);

        if (HPDF_Array_Add (id, HPDF_Binary_New (pdf->mmgr, idkey, HPDF_MD5_KEY_LEN)) != HPDF_OK)
            return pdf->error.error_no;

        if (HPDF_Array_Add (id, HPDF_Binary_New (pdf->mmgr,idkey,HPDF_MD5_KEY_LEN)) != HPDF_OK)
            return pdf->error.error_no;

        return HPDF_OK;
    }

    return HPDF_OK;
}