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329 lines (230 loc) · 7.45 KB
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/*
* << Haru Free PDF Library 2.0.3 >> -- hpdf_outline.c
*
* Copyright (c) 1999-2006 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
* It is provided "as is" without express or implied warranty.
*
*/
#include "hpdf_conf.h"
#include "hpdf_utils.h"
#include "hpdf_destination.h"
#include "hpdf.h"
#define HPDF_OUTLINE_CLOSED 0
#define HPDF_OUTLINE_OPENED 1
static HPDF_STATUS
AddChild (HPDF_Outline parent,
HPDF_Outline item);
static HPDF_STATUS
BeforeWrite (HPDF_Dict obj);
static HPDF_UINT
CountChild (HPDF_Outline outline);
/*----------------------------------------------------------------------------*/
/*----- HPDF_Outline ---------------------------------------------------------*/
HPDF_Outline
HPDF_OutlineRoot_New (HPDF_MMgr mmgr,
HPDF_Xref xref)
{
HPDF_Outline outline;
HPDF_STATUS ret = HPDF_OK;
HPDF_Number open_flg;
HPDF_PTRACE((" HPDF_OutlineRoot_New\n"));
outline = HPDF_Dict_New (mmgr);
if (!outline)
return NULL;
outline->before_write_fn = BeforeWrite;
if (HPDF_Xref_Add (xref, outline) != HPDF_OK)
return NULL;
open_flg = HPDF_Number_New (mmgr, HPDF_OUTLINE_OPENED);
if (!open_flg)
return NULL;
open_flg->header.obj_id |= HPDF_OTYPE_HIDDEN;
ret += HPDF_Dict_Add (outline, "_OPENED", open_flg);
ret += HPDF_Dict_AddName (outline, "Type", "Outline");
if (ret != HPDF_OK)
return NULL;
outline->header.obj_class |= HPDF_OSUBCLASS_OUTLINE;
return outline;
}
HPDF_Outline
HPDF_Outline_New (HPDF_MMgr mmgr,
HPDF_Outline parent,
const char *title,
HPDF_Encoder encoder,
HPDF_Xref xref)
{
HPDF_Outline outline;
HPDF_String s;
HPDF_STATUS ret = HPDF_OK;
HPDF_Number open_flg;
HPDF_PTRACE((" HPDF_Outline_New\n"));
if (!mmgr || !parent || !xref)
return NULL;
outline = HPDF_Dict_New (mmgr);
if (!outline)
return NULL;
outline->before_write_fn = BeforeWrite;
if (HPDF_Xref_Add (xref, outline) != HPDF_OK)
return NULL;
s = HPDF_String_New (mmgr, title, encoder);
if (!s)
return NULL;
else
ret += HPDF_Dict_Add (outline, "Title", s);
open_flg = HPDF_Number_New (mmgr, HPDF_OUTLINE_OPENED);
if (!open_flg)
return NULL;
open_flg->header.obj_id |= HPDF_OTYPE_HIDDEN;
ret += HPDF_Dict_Add (outline, "_OPENED", open_flg);
ret += HPDF_Dict_AddName (outline, "Type", "Outline");
ret += AddChild (parent, outline);
if (ret != HPDF_OK)
return NULL;
outline->header.obj_class |= HPDF_OSUBCLASS_OUTLINE;
return outline;
}
static HPDF_STATUS
AddChild (HPDF_Outline parent,
HPDF_Outline item)
{
HPDF_Outline first = (HPDF_Outline)HPDF_Dict_GetItem (parent, "First",
HPDF_OCLASS_DICT);
HPDF_Outline last = (HPDF_Outline)HPDF_Dict_GetItem (parent, "Last",
HPDF_OCLASS_DICT);
HPDF_STATUS ret = 0;
HPDF_PTRACE((" AddChild\n"));
if (!first)
ret += HPDF_Dict_Add (parent, "First", item);
if (last) {
ret += HPDF_Dict_Add (last, "Next", item);
ret += HPDF_Dict_Add (item, "Prev", last);
}
ret += HPDF_Dict_Add (parent, "Last", item);
ret += HPDF_Dict_Add (item, "Parent", parent);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (item->error);
return HPDF_OK;
}
HPDF_BOOL
HPDF_Outline_GetOpened (HPDF_Outline outline)
{
HPDF_Number n = (HPDF_Number)HPDF_Dict_GetItem (outline, "_OPENED",
HPDF_OCLASS_NUMBER);
HPDF_PTRACE((" HPDF_Outline_GetOpened\n"));
if (!n)
return HPDF_FALSE;
return (HPDF_BOOL)n->value;
}
HPDF_Outline
HPDF_Outline_GetFirst (HPDF_Outline outline)
{
HPDF_PTRACE((" HPDF_Outline_GetFirst\n"));
return (HPDF_Outline)HPDF_Dict_GetItem (outline, "First",
HPDF_OCLASS_DICT);
}
HPDF_Outline
HPDF_Outline_GetLast (HPDF_Outline outline)
{
HPDF_PTRACE((" HPDF_Outline_GetLast\n"));
return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Last", HPDF_OCLASS_DICT);
}
HPDF_Outline
HPDF_Outline_GetPrev (HPDF_Outline outline)
{
HPDF_PTRACE((" HPDF_Outline_GetPrev\n"));
return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Prev", HPDF_OCLASS_DICT);
}
HPDF_Outline
HPDF_Outline_GetNext (HPDF_Outline outline)
{
HPDF_PTRACE((" HPDF_Outline_GetNext\n"));
return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Next", HPDF_OCLASS_DICT);
}
HPDF_Outline
HPDF_Outline_GetParent (HPDF_Outline outline)
{
HPDF_PTRACE((" HPDF_Outline_GetParent\n"));
return (HPDF_Outline)HPDF_Dict_GetItem (outline, "Parent",
HPDF_OCLASS_DICT);
}
static HPDF_STATUS
BeforeWrite (HPDF_Dict obj)
{
HPDF_Number n = (HPDF_Number)HPDF_Dict_GetItem (obj, "Count",
HPDF_OCLASS_NUMBER);
HPDF_UINT count = CountChild ((HPDF_Outline)obj);
HPDF_PTRACE((" BeforeWrite\n"));
if (count == 0 && n)
return HPDF_Dict_RemoveElement (obj, "Count");
if (!HPDF_Outline_GetOpened ((HPDF_Outline)obj))
count *= -1;
if (n)
n->value = count;
else
if (count)
return HPDF_Dict_AddNumber (obj, "Count", count);
return HPDF_OK;
}
static HPDF_UINT
CountChild (HPDF_Outline outline)
{
HPDF_Outline child = HPDF_Outline_GetFirst (outline);
HPDF_UINT count = 0;
HPDF_PTRACE((" CountChild\n"));
while (child) {
count++;
if (HPDF_Outline_GetOpened (child))
count += CountChild (child);
child = HPDF_Outline_GetNext (child);
}
return count;
}
HPDF_BOOL
HPDF_Outline_Validate (HPDF_Outline outline)
{
if (!outline)
return HPDF_FALSE;
HPDF_PTRACE((" HPDF_Outline_Validate\n"));
if (outline->header.obj_class !=
(HPDF_OSUBCLASS_OUTLINE | HPDF_OCLASS_DICT))
return HPDF_FALSE;
return HPDF_TRUE;
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Outline_SetDestination (HPDF_Outline outline,
HPDF_Destination dst)
{
HPDF_PTRACE((" HPDF_Outline_SetDestination\n"));
if (!HPDF_Outline_Validate (outline))
return HPDF_INVALID_OUTLINE;
if (!HPDF_Destination_Validate (dst))
return HPDF_RaiseError (outline->error, HPDF_INVALID_DESTINATION, 0);
if (dst == NULL)
return HPDF_Dict_RemoveElement (outline, "Dest");
if (HPDF_Dict_Add (outline, "Dest", dst) != HPDF_OK)
return HPDF_CheckError (outline->error);
return HPDF_OK;
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Outline_SetOpened (HPDF_Outline outline,
HPDF_BOOL opened)
{
HPDF_Number n;
if (!HPDF_Outline_Validate (outline))
return HPDF_INVALID_OUTLINE;
n = (HPDF_Number)HPDF_Dict_GetItem (outline, "_OPENED",
HPDF_OCLASS_NUMBER);
HPDF_PTRACE((" HPDF_Outline_SetOpened\n"));
if (!n) {
n = HPDF_Number_New (outline->mmgr, (HPDF_INT)opened);
if (!n || HPDF_Dict_Add (outline, "_OPENED", n) != HPDF_OK)
return HPDF_CheckError (outline->error);
} else
n->value = (HPDF_INT)opened;
return HPDF_OK;
}