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SqMod/vendor/POCO/PDF/src/hpdf_page_operator.c

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Major plugin refactor and cleanup. Switched to POCO library for unified platform/library interface. Deprecated the external module API. It was creating more problems than solving. Removed most built-in libraries in favor of system libraries for easier maintenance. Cleaned and secured code with help from static analyzers.
2021-01-30 07:51:39 +01:00
/*
* << Haru Free PDF Library >> -- hpdf_page_operator.c
*
* URL: http://libharu.org
*
* Copyright (c) 1999-2006 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp>
* Copyright (c) 2007-2009 Antony Dovgal <tony@daylessday.org>
*
* 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_pages.h"
#include "hpdf.h"
static const HPDF_Point INIT_POS = {0, 0};
static const HPDF_DashMode INIT_MODE = {{0, 0, 0, 0, 0, 0, 0, 0}, 0, 0};
static HPDF_STATUS
InternalWriteText (HPDF_PageAttr attr,
const char *text);
static HPDF_STATUS
InternalArc (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray,
HPDF_REAL ang1,
HPDF_REAL ang2,
HPDF_BOOL cont_flg);
static HPDF_STATUS
InternalShowTextNextLine (HPDF_Page page,
const char *text,
HPDF_UINT len);
/*--- General graphics state ---------------------------------------------*/
/* w */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetLineWidth (HPDF_Page page,
HPDF_REAL line_width)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetLineWidth\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (line_width < 0)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, line_width) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " w\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->line_width = line_width;
return ret;
}
/* J */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetLineCap (HPDF_Page page,
HPDF_LineCap line_cap)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetLineCap\n"));
if (ret != HPDF_OK)
return ret;
if (line_cap >= HPDF_LINECAP_EOF)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE,
(HPDF_STATUS)line_cap);
attr = (HPDF_PageAttr)page->attr;
if ((ret = HPDF_Stream_WriteInt (attr->stream,
(HPDF_UINT)line_cap)) != HPDF_OK)
return ret;
if ((ret = HPDF_Stream_WriteStr (attr->stream,
" J\012")) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->line_cap = line_cap;
return ret;
}
/* j */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetLineJoin (HPDF_Page page,
HPDF_LineJoin line_join)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetLineJoin\n"));
if (ret != HPDF_OK)
return ret;
if (line_join >= HPDF_LINEJOIN_EOF)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE,
(HPDF_STATUS)line_join);
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteInt (attr->stream, (HPDF_UINT)line_join) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " j\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->line_join = line_join;
return ret;
}
/* M */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetMiterLimit (HPDF_Page page,
HPDF_REAL miter_limit)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetMitterLimit\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (miter_limit < 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, miter_limit) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " M\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->miter_limit = miter_limit;
return ret;
}
/* d */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetDash (HPDF_Page page,
const HPDF_UINT16 *dash_ptn,
HPDF_UINT num_param,
HPDF_UINT phase)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
const HPDF_UINT16 *pdash_ptn = dash_ptn;
HPDF_PageAttr attr;
HPDF_UINT i;
HPDF_PTRACE ((" HPDF_Page_SetDash\n"));
if (ret != HPDF_OK)
return ret;
if (num_param != 1 && (num_param / 2) * 2 != num_param)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_PARAM_COUNT,
num_param);
if (num_param == 0 && phase > 0)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE,
phase);
if (!dash_ptn && num_param > 0)
return HPDF_RaiseError (page->error, HPDF_INVALID_PARAMETER,
phase);
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
*pbuf++ = '[';
for (i = 0; i < num_param; i++) {
if (*pdash_ptn == 0 || *pdash_ptn > HPDF_MAX_DASH_PATTERN)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
pbuf = HPDF_IToA (pbuf, *pdash_ptn, eptr);
*pbuf++ = ' ';
pdash_ptn++;
}
*pbuf++ = ']';
*pbuf++ = ' ';
pbuf = HPDF_IToA (pbuf, phase, eptr);
HPDF_StrCpy (pbuf, " d\012", eptr);
attr = (HPDF_PageAttr)page->attr;
if ((ret = HPDF_Stream_WriteStr (attr->stream, buf)) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->dash_mode = INIT_MODE;
attr->gstate->dash_mode.num_ptn = num_param;
attr->gstate->dash_mode.phase = phase;
pdash_ptn = dash_ptn;
for (i = 0; i < num_param; i++) {
attr->gstate->dash_mode.ptn[i] = *pdash_ptn;
pdash_ptn++;
}
return ret;
}
/* ri --not implemented yet */
/* i */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetFlat (HPDF_Page page,
HPDF_REAL flatness)
{
HPDF_PageAttr attr;
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PTRACE ((" HPDF_Page_SetFlat\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (flatness > 100 || flatness < 0)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, flatness) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " i\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->flatness = flatness;
return ret;
}
/* gs */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetExtGState (HPDF_Page page,
HPDF_ExtGState ext_gstate)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION);
HPDF_PageAttr attr;
const char *local_name;
HPDF_PTRACE ((" HPDF_Page_SetExtGState\n"));
if (ret != HPDF_OK)
return ret;
if (!HPDF_ExtGState_Validate (ext_gstate))
return HPDF_RaiseError (page->error, HPDF_INVALID_OBJECT, 0);
if (page->mmgr != ext_gstate->mmgr)
return HPDF_RaiseError (page->error, HPDF_INVALID_EXT_GSTATE, 0);
attr = (HPDF_PageAttr)page->attr;
local_name = HPDF_Page_GetExtGStateName (page, ext_gstate);
if (!local_name)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteEscapeName (attr->stream, local_name) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " gs\012") != HPDF_OK)
return HPDF_CheckError (page->error);
/* change objct class to read only. */
ext_gstate->header.obj_class = (HPDF_OSUBCLASS_EXT_GSTATE_R | HPDF_OCLASS_DICT);
return ret;
}
/*--- Special graphic state operator --------------------------------------*/
/* q */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_GSave (HPDF_Page page)
{
HPDF_GState new_gstate;
HPDF_PageAttr attr;
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION);
HPDF_PTRACE ((" HPDF_Page_GSave\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
new_gstate = HPDF_GState_New (page->mmgr, attr->gstate);
if (!new_gstate)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, "q\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate = new_gstate;
return ret;
}
/* Q */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_GRestore (HPDF_Page page)
{
HPDF_GState new_gstate;
HPDF_PageAttr attr;
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION);
HPDF_PTRACE ((" HPDF_Page_GRestore\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (!attr->gstate->prev)
return HPDF_RaiseError (page->error, HPDF_PAGE_CANNOT_RESTORE_GSTATE,
0);
new_gstate = HPDF_GState_Free (page->mmgr, attr->gstate);
attr->gstate = new_gstate;
if (HPDF_Stream_WriteStr (attr->stream, "Q\012") != HPDF_OK)
return HPDF_CheckError (page->error);
return ret;
}
/* cm */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Concat (HPDF_Page page,
HPDF_REAL a,
HPDF_REAL b,
HPDF_REAL c,
HPDF_REAL d,
HPDF_REAL x,
HPDF_REAL y)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_TransMatrix tm;
HPDF_PTRACE ((" HPDF_Page_Concat\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, a, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, b, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, c, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, d, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
HPDF_StrCpy (pbuf, " cm\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
tm = attr->gstate->trans_matrix;
attr->gstate->trans_matrix.a = tm.a * a + tm.b * c;
attr->gstate->trans_matrix.b = tm.a * b + tm.b * d;
attr->gstate->trans_matrix.c = tm.c * a + tm.d * c;
attr->gstate->trans_matrix.d = tm.c * b + tm.d * d;
attr->gstate->trans_matrix.x = tm.x + x * tm.a + y * tm.c;
attr->gstate->trans_matrix.y = tm.y + x * tm.b + y * tm.d;
return ret;
}
/*--- Path construction operator ------------------------------------------*/
/* m */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_MoveTo (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_MoveTo\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
HPDF_StrCpy (pbuf, " m\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x;
attr->cur_pos.y = y;
attr->str_pos = attr->cur_pos;
attr->gmode = HPDF_GMODE_PATH_OBJECT;
return ret;
}
/* l */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_LineTo (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_LineTo\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
HPDF_StrCpy (pbuf, " l\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x;
attr->cur_pos.y = y;
return ret;
}
/* c */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_CurveTo (HPDF_Page page,
HPDF_REAL x1,
HPDF_REAL y1,
HPDF_REAL x2,
HPDF_REAL y2,
HPDF_REAL x3,
HPDF_REAL y3)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_CurveTo\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x1, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y1, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x2, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y2, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x3, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y3, eptr);
HPDF_StrCpy (pbuf, " c\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x3;
attr->cur_pos.y = y3;
return ret;
}
/* v */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_CurveTo2 (HPDF_Page page,
HPDF_REAL x2,
HPDF_REAL y2,
HPDF_REAL x3,
HPDF_REAL y3)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_CurveTo2\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x2, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y2, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x3, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y3, eptr);
HPDF_StrCpy (pbuf, " v\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x3;
attr->cur_pos.y = y3;
return ret;
}
/* y */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_CurveTo3 (HPDF_Page page,
HPDF_REAL x1,
HPDF_REAL y1,
HPDF_REAL x3,
HPDF_REAL y3)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_CurveTo3\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x1, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y1, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x3, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y3, eptr);
HPDF_StrCpy (pbuf, " y\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x3;
attr->cur_pos.y = y3;
return ret;
}
/* h */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ClosePath (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_ClosePath\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "h\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos = attr->str_pos;
return ret;
}
/* re */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Rectangle (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL width,
HPDF_REAL height)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Rectangle\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, width, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, height, eptr);
HPDF_StrCpy (pbuf, " re\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x;
attr->cur_pos.y = y;
attr->str_pos = attr->cur_pos;
attr->gmode = HPDF_GMODE_PATH_OBJECT;
return ret;
}
/*--- Path painting operator ---------------------------------------------*/
/* S */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Stroke (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Stroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "S\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* s */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ClosePathStroke (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_ClosePathStroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "s\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* f */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Fill (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Fill\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "f\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* f* */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Eofill (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Eofill\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "f*\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* B */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_FillStroke (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_FillStroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "B\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* B* */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_EofillStroke (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_EofillStroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "B*\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
return ret;
}
/* b */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ClosePathFillStroke (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_ClosePathFillStroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "b\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* b* */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ClosePathEofillStroke (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_ClosePathEofillStroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "b*\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/* n */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_EndPath (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT |
HPDF_GMODE_CLIPPING_PATH);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_PageEndPath\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "n\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
attr->cur_pos = INIT_POS;
return ret;
}
/*--- Clipping paths operator --------------------------------------------*/
/* W */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Clip (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Clip\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "W\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_CLIPPING_PATH;
return ret;
}
/* W* */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Eoclip (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PATH_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Eoclip\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "W*\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_CLIPPING_PATH;
return ret;
}
/*--- Text object operator -----------------------------------------------*/
/* BT */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_BeginText (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION);
HPDF_PageAttr attr;
const HPDF_TransMatrix INIT_MATRIX = {1, 0, 0, 1, 0, 0};
HPDF_PTRACE ((" HPDF_Page_BeginText\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "BT\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gmode = HPDF_GMODE_TEXT_OBJECT;
attr->text_pos = INIT_POS;
attr->text_matrix = INIT_MATRIX;
return ret;
}
/* ET */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_EndText (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_EndText\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "ET\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->text_pos = INIT_POS;
attr->gmode = HPDF_GMODE_PAGE_DESCRIPTION;
return ret;
}
/*--- Text state ---------------------------------------------------------*/
/* Tc */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetCharSpace (HPDF_Page page,
HPDF_REAL value)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetCharSpace\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (value < HPDF_MIN_CHARSPACE || value > HPDF_MAX_CHARSPACE)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, value) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Tc\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->char_space = value;
return ret;
}
/* Tw */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetWordSpace (HPDF_Page page,
HPDF_REAL value)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetWordSpace\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (value < HPDF_MIN_WORDSPACE || value > HPDF_MAX_WORDSPACE)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, value) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Tw\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->word_space = value;
return ret;
}
/* Tz */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetHorizontalScalling (HPDF_Page page,
HPDF_REAL value)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetHorizontalScalling\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (value < HPDF_MIN_HORIZONTALSCALING ||
value > HPDF_MAX_HORIZONTALSCALING)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, value) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Tz\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->h_scalling = value;
return ret;
}
/* TL */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetTextLeading (HPDF_Page page,
HPDF_REAL value)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetTextLeading\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteReal (attr->stream, value) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " TL\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->text_leading = value;
return ret;
}
/* Tf */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetFontAndSize (HPDF_Page page,
HPDF_Font font,
HPDF_REAL size)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
const char *local_name;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetFontAndSize\n"));
if (ret != HPDF_OK)
return ret;
if (!HPDF_Font_Validate (font))
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_FONT, 0);
if (size <= 0 || size > HPDF_MAX_FONTSIZE)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_FONT_SIZE, size);
if (page->mmgr != font->mmgr)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_FONT, 0);
attr = (HPDF_PageAttr)page->attr;
local_name = HPDF_Page_GetLocalFontName (page, font);
if (!local_name)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_FONT, 0);
if (HPDF_Stream_WriteEscapeName (attr->stream, local_name) != HPDF_OK)
return HPDF_CheckError (page->error);
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, size, eptr);
HPDF_StrCpy (pbuf, " Tf\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->font = font;
attr->gstate->font_size = size;
attr->gstate->writing_mode = ((HPDF_FontAttr)font->attr)->writing_mode;
return ret;
}
/* Tr */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetTextRenderingMode (HPDF_Page page,
HPDF_TextRenderingMode mode)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetTextRenderingMode\n"));
if (ret != HPDF_OK)
return ret;
if (mode >= HPDF_RENDERING_MODE_EOF)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE,
(HPDF_STATUS)mode);
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteInt (attr->stream, (HPDF_INT)mode) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Tr\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->rendering_mode = mode;
return ret;
}
/* Ts */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetTextRaise (HPDF_Page page,
HPDF_REAL value)
{
return HPDF_Page_SetTextRise (page, value);
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetTextRise (HPDF_Page page,
HPDF_REAL value)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetTextRaise\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteReal (attr->stream, value) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Ts\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->text_rise = value;
return ret;
}
/*--- Text positioning ---------------------------------------------------*/
/* Td */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_MoveTextPos (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_MoveTextPos\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
HPDF_StrCpy (pbuf, " Td\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->text_matrix.x += x * attr->text_matrix.a + y * attr->text_matrix.c;
attr->text_matrix.y += y * attr->text_matrix.d + x * attr->text_matrix.b;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
return ret;
}
/* TD */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_MoveTextPos2 (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_MoveTextPos2\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
HPDF_StrCpy (pbuf, " TD\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->text_matrix.x += x * attr->text_matrix.a + y * attr->text_matrix.c;
attr->text_matrix.y += y * attr->text_matrix.d + x * attr->text_matrix.b;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
attr->gstate->text_leading = -y;
return ret;
}
/* Tm */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetTextMatrix (HPDF_Page page,
HPDF_REAL a,
HPDF_REAL b,
HPDF_REAL c,
HPDF_REAL d,
HPDF_REAL x,
HPDF_REAL y)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetTextMatrix\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if ((a == 0 || d == 0) && (b == 0 || c == 0))
return HPDF_RaiseError (page->error, HPDF_INVALID_PARAMETER, 0);
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, a, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, b, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, c, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, d, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
HPDF_StrCpy (pbuf, " Tm\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->text_matrix.a = a;
attr->text_matrix.b = b;
attr->text_matrix.c = c;
attr->text_matrix.d = d;
attr->text_matrix.x = x;
attr->text_matrix.y = y;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
return ret;
}
/* T* */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_MoveToNextLine (HPDF_Page page)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_MoveToNextLine\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (HPDF_Stream_WriteStr (attr->stream, "T*\012") != HPDF_OK)
return HPDF_CheckError (page->error);
/* calculate the reference point of text */
attr->text_matrix.x -= attr->gstate->text_leading * attr->text_matrix.c;
attr->text_matrix.y -= attr->gstate->text_leading * attr->text_matrix.d;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
return ret;
}
/*--- Text showing -------------------------------------------------------*/
/* Tj */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ShowText (HPDF_Page page,
const char *text)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_REAL tw;
HPDF_PTRACE ((" HPDF_Page_ShowText\n"));
if (ret != HPDF_OK || text == NULL || text[0] == 0)
return ret;
attr = (HPDF_PageAttr)page->attr;
/* no font exists */
if (!attr->gstate->font)
return HPDF_RaiseError (page->error, HPDF_PAGE_FONT_NOT_FOUND, 0);
tw = HPDF_Page_TextWidth (page, text);
if (!tw)
return ret;
if (InternalWriteText (attr, text) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Tj\012") != HPDF_OK)
return HPDF_CheckError (page->error);
/* calculate the reference point of text */
if (attr->gstate->writing_mode == HPDF_WMODE_HORIZONTAL) {
attr->text_pos.x += tw * attr->text_matrix.a;
attr->text_pos.y += tw * attr->text_matrix.b;
} else {
attr->text_pos.x -= tw * attr->text_matrix.b;
attr->text_pos.y -= tw * attr->text_matrix.a;
}
return ret;
}
/* TJ */
/* ' */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ShowTextNextLine (HPDF_Page page,
const char *text)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_REAL tw;
HPDF_PTRACE ((" HPDF_Page_ShowTextNextLine\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
/* no font exists */
if (!attr->gstate->font)
return HPDF_RaiseError (page->error, HPDF_PAGE_FONT_NOT_FOUND, 0);
if (text == NULL || text[0] == 0)
return HPDF_Page_MoveToNextLine(page);
if (InternalWriteText (attr, text) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " \'\012") != HPDF_OK)
return HPDF_CheckError (page->error);
tw = HPDF_Page_TextWidth (page, text);
/* calculate the reference point of text */
attr->text_matrix.x -= attr->gstate->text_leading * attr->text_matrix.c;
attr->text_matrix.y -= attr->gstate->text_leading * attr->text_matrix.d;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
if (attr->gstate->writing_mode == HPDF_WMODE_HORIZONTAL) {
attr->text_pos.x += tw * attr->text_matrix.a;
attr->text_pos.y += tw * attr->text_matrix.b;
} else {
attr->text_pos.x -= tw * attr->text_matrix.b;
attr->text_pos.y -= tw * attr->text_matrix.a;
}
return ret;
}
/* " */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ShowTextNextLineEx (HPDF_Page page,
HPDF_REAL word_space,
HPDF_REAL char_space,
const char *text)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_REAL tw;
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PTRACE ((" HPDF_Page_ShowTextNextLineEX\n"));
if (ret != HPDF_OK)
return ret;
if (word_space < HPDF_MIN_WORDSPACE || word_space > HPDF_MAX_WORDSPACE)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (char_space < HPDF_MIN_CHARSPACE || char_space > HPDF_MAX_CHARSPACE)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
attr = (HPDF_PageAttr)page->attr;
/* no font exists */
if (!attr->gstate->font)
return HPDF_RaiseError (page->error, HPDF_PAGE_FONT_NOT_FOUND, 0);
if (text == NULL || text[0] == 0)
return HPDF_Page_MoveToNextLine(page);
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, word_space, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, char_space, eptr);
*pbuf = ' ';
if (InternalWriteText (attr, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
if (InternalWriteText (attr, text) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " \"\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->word_space = word_space;
attr->gstate->char_space = char_space;
tw = HPDF_Page_TextWidth (page, text);
/* calculate the reference point of text */
attr->text_matrix.x += attr->gstate->text_leading * attr->text_matrix.b;
attr->text_matrix.y -= attr->gstate->text_leading * attr->text_matrix.a;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
if (attr->gstate->writing_mode == HPDF_WMODE_HORIZONTAL) {
attr->text_pos.x += tw * attr->text_matrix.a;
attr->text_pos.y += tw * attr->text_matrix.b;
} else {
attr->text_pos.x -= tw * attr->text_matrix.b;
attr->text_pos.y -= tw * attr->text_matrix.a;
}
return ret;
}
/*--- Color showing ------------------------------------------------------*/
/* cs --not implemented yet */
/* CS --not implemented yet */
/* sc --not implemented yet */
/* scn --not implemented yet */
/* SC --not implemented yet */
/* SCN --not implemented yet */
/* g */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetGrayFill (HPDF_Page page,
HPDF_REAL gray)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetGrayFill\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (gray < 0 || gray > 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, gray) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " g\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->gray_fill = gray;
attr->gstate->cs_fill = HPDF_CS_DEVICE_GRAY;
return ret;
}
/* G */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetGrayStroke (HPDF_Page page,
HPDF_REAL gray)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetGrayStroke\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
if (gray < 0 || gray > 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (HPDF_Stream_WriteReal (attr->stream, gray) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " G\012") != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->gray_stroke = gray;
attr->gstate->cs_stroke = HPDF_CS_DEVICE_GRAY;
return ret;
}
/* rg */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetRGBFill (HPDF_Page page,
HPDF_REAL r,
HPDF_REAL g,
HPDF_REAL b)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT |
HPDF_GMODE_PAGE_DESCRIPTION);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetRGBFill\n"));
if (ret != HPDF_OK)
return ret;
if (r < 0 || r > 1 || g < 0 || g > 1 || b < 0 || b > 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, r, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, g, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, b, eptr);
HPDF_StrCpy (pbuf, " rg\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->rgb_fill.r = r;
attr->gstate->rgb_fill.g = g;
attr->gstate->rgb_fill.b = b;
attr->gstate->cs_fill = HPDF_CS_DEVICE_RGB;
return ret;
}
/* RG */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetRGBStroke (HPDF_Page page,
HPDF_REAL r,
HPDF_REAL g,
HPDF_REAL b)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT |
HPDF_GMODE_PAGE_DESCRIPTION);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetRGBStroke\n"));
if (ret != HPDF_OK)
return ret;
if (r < 0 || r > 1 || g < 0 || g > 1 || b < 0 || b > 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, r, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, g, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, b, eptr);
HPDF_StrCpy (pbuf, " RG\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->rgb_stroke.r = r;
attr->gstate->rgb_stroke.g = g;
attr->gstate->rgb_stroke.b = b;
attr->gstate->cs_stroke = HPDF_CS_DEVICE_RGB;
return ret;
}
/* k */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetCMYKFill (HPDF_Page page,
HPDF_REAL c,
HPDF_REAL m,
HPDF_REAL y,
HPDF_REAL k)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT |
HPDF_GMODE_PAGE_DESCRIPTION);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetCMYKFill\n"));
if (ret != HPDF_OK)
return ret;
if (c < 0 || c > 1 || m < 0 || m > 1 || y < 0 || y > 1 || k < 0 || k > 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, c, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, m, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, k, eptr);
HPDF_StrCpy (pbuf, " k\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->cmyk_fill.c = c;
attr->gstate->cmyk_fill.m = m;
attr->gstate->cmyk_fill.y = y;
attr->gstate->cmyk_fill.k = k;
attr->gstate->cs_fill = HPDF_CS_DEVICE_CMYK;
return ret;
}
/* K */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetCMYKStroke (HPDF_Page page,
HPDF_REAL c,
HPDF_REAL m,
HPDF_REAL y,
HPDF_REAL k)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT |
HPDF_GMODE_PAGE_DESCRIPTION);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_SetCMYKStroke\n"));
if (ret != HPDF_OK)
return ret;
if (c < 0 || c > 1 || m < 0 || m > 1 || y < 0 || y > 1 || k < 0 || k > 1)
return HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, c, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, m, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, k, eptr);
HPDF_StrCpy (pbuf, " K\012", eptr);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->gstate->cmyk_stroke.c = c;
attr->gstate->cmyk_stroke.m = m;
attr->gstate->cmyk_stroke.y = y;
attr->gstate->cmyk_stroke.k = k;
attr->gstate->cs_stroke = HPDF_CS_DEVICE_CMYK;
return ret;
}
/*--- Shading patterns ---------------------------------------------------*/
/* sh --not implemented yet */
/*--- In-line images -----------------------------------------------------*/
/* BI --not implemented yet */
/* ID --not implemented yet */
/* EI --not implemented yet */
/*--- XObjects -----------------------------------------------------------*/
/* Do */
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_ExecuteXObject (HPDF_Page page,
HPDF_XObject obj)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION);
HPDF_PageAttr attr;
const char *local_name;
HPDF_PTRACE ((" HPDF_Page_ExecuteXObject\n"));
if (ret != HPDF_OK)
return ret;
if (!obj || obj->header.obj_class != (HPDF_OSUBCLASS_XOBJECT |
HPDF_OCLASS_DICT))
return HPDF_RaiseError (page->error, HPDF_INVALID_OBJECT, 0);
if (page->mmgr != obj->mmgr)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_XOBJECT, 0);
attr = (HPDF_PageAttr)page->attr;
local_name = HPDF_Page_GetXObjectName (page, obj);
if (!local_name)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_XOBJECT, 0);
if (HPDF_Stream_WriteEscapeName (attr->stream, local_name) != HPDF_OK)
return HPDF_CheckError (page->error);
if (HPDF_Stream_WriteStr (attr->stream, " Do\012") != HPDF_OK)
return HPDF_CheckError (page->error);
return ret;
}
/*--- Marked content -----------------------------------------------------*/
/* BMC --not implemented yet */
/* BDC --not implemented yet */
/* EMC --not implemented yet */
/* MP --not implemented yet */
/* DP --not implemented yet */
/*--- Compatibility ------------------------------------------------------*/
/* BX --not implemented yet */
/* EX --not implemented yet */
/*--- combined function --------------------------------------------------*/
static const HPDF_REAL KAPPA = 0.552F;
static char*
QuarterCircleA (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray)
{
pbuf = HPDF_FToA (pbuf, x -ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x -ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + ray, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
static char*
QuarterCircleB (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray)
{
pbuf = HPDF_FToA (pbuf, x + ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x + ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x + ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
static char*
QuarterCircleC (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray)
{
pbuf = HPDF_FToA (pbuf, x + ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x + ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - ray, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
static char*
QuarterCircleD (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray)
{
pbuf = HPDF_FToA (pbuf, x - ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x - ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - ray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x - ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Circle (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ * 2];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Circle\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x - ray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
pbuf = (char *)HPDF_StrCpy (pbuf, " m\012", eptr);
pbuf = QuarterCircleA (pbuf, eptr, x, y, ray);
pbuf = QuarterCircleB (pbuf, eptr, x, y, ray);
pbuf = QuarterCircleC (pbuf, eptr, x, y, ray);
QuarterCircleD (pbuf, eptr, x, y, ray);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x - ray;
attr->cur_pos.y = y;
attr->str_pos = attr->cur_pos;
attr->gmode = HPDF_GMODE_PATH_OBJECT;
return ret;
}
static char*
QuarterEllipseA (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL xray,
HPDF_REAL yray)
{
pbuf = HPDF_FToA (pbuf, x - xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + yray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x -xray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + yray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + yray, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
static char*
QuarterEllipseB (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL xray,
HPDF_REAL yray)
{
pbuf = HPDF_FToA (pbuf, x + xray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + yray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x + xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y + yray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x + xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
static char*
QuarterEllipseC (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL xray,
HPDF_REAL yray)
{
pbuf = HPDF_FToA (pbuf, x + xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - yray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x + xray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - yray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - yray, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
static char*
QuarterEllipseD (char *pbuf,
char *eptr,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL xray,
HPDF_REAL yray)
{
pbuf = HPDF_FToA (pbuf, x - xray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - yray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x - xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y - yray * KAPPA, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, x - xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
return (char *)HPDF_StrCpy (pbuf, " c\012", eptr);
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Ellipse (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL xray,
HPDF_REAL yray)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_PATH_OBJECT);
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_Ellipse\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
pbuf = HPDF_FToA (pbuf, x - xray, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, y, eptr);
pbuf = (char *)HPDF_StrCpy (pbuf, " m\012", eptr);
pbuf = QuarterEllipseA (pbuf, eptr, x, y, xray, yray);
pbuf = QuarterEllipseB (pbuf, eptr, x, y, xray, yray);
pbuf = QuarterEllipseC (pbuf, eptr, x, y, xray, yray);
QuarterEllipseD (pbuf, eptr, x, y, xray, yray);
if (HPDF_Stream_WriteStr (attr->stream, buf) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = x - xray;
attr->cur_pos.y = y;
attr->str_pos = attr->cur_pos;
attr->gmode = HPDF_GMODE_PATH_OBJECT;
return ret;
}
/*
* this function is based on the code which is contributed by Riccardo Cohen.
*
* from http://www.tinaja.com/glib/bezarc1.pdf coming from
* http://www.whizkidtech.redprince.net/bezier/circle/
*/
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Arc (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray,
HPDF_REAL ang1,
HPDF_REAL ang2)
{
HPDF_BOOL cont_flg = HPDF_FALSE;
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_PATH_OBJECT);
HPDF_PTRACE ((" HPDF_Page_Arc\n"));
if (fabs(ang2 - ang1) >= 360)
HPDF_RaiseError (page->error, HPDF_PAGE_OUT_OF_RANGE, 0);
if (ret != HPDF_OK)
return ret;
while (ang1 < 0 || ang2 < 0) {
ang1 = ang1 + 360;
ang2 = ang2 + 360;
}
for (;;) {
if (fabs(ang2 - ang1) <= 90)
return InternalArc (page, x, y, ray, ang1, ang2, cont_flg);
else {
HPDF_REAL tmp_ang = (ang2 > ang1 ? ang1 + 90 : ang1 - 90);
if ((ret = InternalArc (page, x, y, ray, ang1, tmp_ang, cont_flg))
!= HPDF_OK)
return ret;
ang1 = tmp_ang;
}
if (fabs(ang1 - ang2) < 0.1)
break;
cont_flg = HPDF_TRUE;
}
return HPDF_OK;
}
static HPDF_STATUS
InternalArc (HPDF_Page page,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL ray,
HPDF_REAL ang1,
HPDF_REAL ang2,
HPDF_BOOL cont_flg)
{
const HPDF_REAL PIE = 3.14159F;
char buf[HPDF_TMP_BUF_SIZ];
char *pbuf = buf;
char *eptr = buf + HPDF_TMP_BUF_SIZ - 1;
HPDF_PageAttr attr;
HPDF_STATUS ret;
HPDF_DOUBLE rx0, ry0, rx1, ry1, rx2, ry2, rx3, ry3;
HPDF_DOUBLE x0, y0, x1, y1, x2, y2, x3, y3;
HPDF_DOUBLE delta_angle;
HPDF_DOUBLE new_angle;
HPDF_PTRACE ((" HPDF_Page_InternalArc\n"));
attr = (HPDF_PageAttr)page->attr;
HPDF_MemSet (buf, 0, HPDF_TMP_BUF_SIZ);
delta_angle = (90 - (HPDF_DOUBLE)(ang1 + ang2) / 2) / 180 * PIE;
new_angle = (HPDF_DOUBLE)(ang2 - ang1) / 2 / 180 * PIE;
rx0 = ray * HPDF_COS (new_angle);
ry0 = ray * HPDF_SIN (new_angle);
rx2 = (ray * 4.0 - rx0) / 3.0;
ry2 = ((ray * 1.0 - rx0) * (rx0 - ray * 3.0)) / (3.0 * ry0);
rx1 = rx2;
ry1 = -ry2;
rx3 = rx0;
ry3 = -ry0;
x0 = rx0 * HPDF_COS (delta_angle) - ry0 * HPDF_SIN (delta_angle) + x;
y0 = rx0 * HPDF_SIN (delta_angle) + ry0 * HPDF_COS (delta_angle) + y;
x1 = rx1 * HPDF_COS (delta_angle) - ry1 * HPDF_SIN (delta_angle) + x;
y1 = rx1 * HPDF_SIN (delta_angle) + ry1 * HPDF_COS (delta_angle) + y;
x2 = rx2 * HPDF_COS (delta_angle) - ry2 * HPDF_SIN (delta_angle) + x;
y2 = rx2 * HPDF_SIN (delta_angle) + ry2 * HPDF_COS (delta_angle) + y;
x3 = rx3 * HPDF_COS (delta_angle) - ry3 * HPDF_SIN (delta_angle) + x;
y3 = rx3 * HPDF_SIN (delta_angle) + ry3 * HPDF_COS (delta_angle) + y;
if (!cont_flg) {
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)x0, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)y0, eptr);
if (attr->gmode == HPDF_GMODE_PATH_OBJECT)
pbuf = (char *)HPDF_StrCpy (pbuf, " l\012", eptr);
else
pbuf = (char *)HPDF_StrCpy (pbuf, " m\012", eptr);
}
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)x1, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)y1, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)x2, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)y2, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)x3, eptr);
*pbuf++ = ' ';
pbuf = HPDF_FToA (pbuf, (HPDF_REAL)y3, eptr);
HPDF_StrCpy (pbuf, " c\012", eptr);
if ((ret = HPDF_Stream_WriteStr (attr->stream, buf)) != HPDF_OK)
return HPDF_CheckError (page->error);
attr->cur_pos.x = (HPDF_REAL)x3;
attr->cur_pos.y = (HPDF_REAL)y3;
attr->str_pos = attr->cur_pos;
attr->gmode = HPDF_GMODE_PATH_OBJECT;
return ret;
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_DrawImage (HPDF_Page page,
HPDF_Image image,
HPDF_REAL x,
HPDF_REAL y,
HPDF_REAL width,
HPDF_REAL height)
{
HPDF_STATUS ret;
if ((ret = HPDF_Page_GSave (page)) != HPDF_OK)
return ret;
if ((ret = HPDF_Page_Concat (page, width, 0, 0, height, x, y)) != HPDF_OK)
return ret;
if ((ret = HPDF_Page_ExecuteXObject (page, image)) != HPDF_OK)
return ret;
return HPDF_Page_GRestore (page);
}
static HPDF_STATUS
InternalWriteText (HPDF_PageAttr attr,
const char *text)
{
HPDF_FontAttr font_attr = (HPDF_FontAttr)attr->gstate->font->attr;
HPDF_STATUS ret;
HPDF_PTRACE ((" InternalWriteText\n"));
if (font_attr->type == HPDF_FONT_TYPE0_TT ||
font_attr->type == HPDF_FONT_TYPE0_CID) {
HPDF_Encoder encoder;
HPDF_UINT len;
if ((ret = HPDF_Stream_WriteStr (attr->stream, "<")) != HPDF_OK)
return ret;
encoder = font_attr->encoder;
len = HPDF_StrLen (text, HPDF_LIMIT_MAX_STRING_LEN);
if (encoder->encode_text_fn == NULL) {
if ((ret = HPDF_Stream_WriteBinary (attr->stream, (HPDF_BYTE *)text,
len, NULL))
!= HPDF_OK)
return ret;
} else {
char *encoded;
HPDF_UINT length;
encoded = (encoder->encode_text_fn)(encoder, text, len, &length);
ret = HPDF_Stream_WriteBinary (attr->stream, (HPDF_BYTE *)encoded,
length, NULL);
free(encoded);
if (ret != HPDF_OK)
return ret;
}
return HPDF_Stream_WriteStr (attr->stream, ">");
}
return HPDF_Stream_WriteEscapeText (attr->stream, text);
}
/*
* Convert a user space text position from absolute to relative coordinates.
* Absolute values are passed in xAbs and yAbs, relative values are returned
* to xRel and yRel. The latter two must not be NULL.
*/
static void
TextPos_AbsToRel (HPDF_TransMatrix text_matrix,
HPDF_REAL xAbs,
HPDF_REAL yAbs,
HPDF_REAL *xRel,
HPDF_REAL *yRel)
{
if (text_matrix.a == 0) {
*xRel = (yAbs - text_matrix.y - (xAbs - text_matrix.x) *
text_matrix.d / text_matrix.c) / text_matrix.b;
*yRel = (xAbs - text_matrix.x) / text_matrix.c;
} else {
HPDF_REAL y = (yAbs - text_matrix.y - (xAbs - text_matrix.x) *
text_matrix.b / text_matrix.a) / (text_matrix.d -
text_matrix.c * text_matrix.b / text_matrix.a);
*xRel = (xAbs - text_matrix.x - y * text_matrix.c) /
text_matrix.a;
*yRel = y;
}
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_TextOut (HPDF_Page page,
HPDF_REAL xpos,
HPDF_REAL ypos,
const char *text)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_REAL x;
HPDF_REAL y;
HPDF_PageAttr attr;
HPDF_PTRACE ((" HPDF_Page_TextOut\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr)page->attr;
TextPos_AbsToRel (attr->text_matrix, xpos, ypos, &x, &y);
if ((ret = HPDF_Page_MoveTextPos (page, x, y)) != HPDF_OK)
return ret;
return HPDF_Page_ShowText (page, text);
}
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_TextRect (HPDF_Page page,
HPDF_REAL left,
HPDF_REAL top,
HPDF_REAL right,
HPDF_REAL bottom,
const char *text,
HPDF_TextAlignment align,
HPDF_UINT *len
)
{
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
const char *ptr = text;
HPDF_BOOL pos_initialized = HPDF_FALSE;
HPDF_REAL save_char_space = 0;
HPDF_BOOL is_insufficient_space = HPDF_FALSE;
HPDF_UINT num_rest;
HPDF_Box bbox;
HPDF_BOOL char_space_changed = HPDF_FALSE;
HPDF_PTRACE ((" HPDF_Page_TextRect\n"));
if (ret != HPDF_OK)
return ret;
attr = (HPDF_PageAttr )page->attr;
/* no font exists */
if (!attr->gstate->font) {
return HPDF_RaiseError (page->error, HPDF_PAGE_FONT_NOT_FOUND, 0);
}
bbox = HPDF_Font_GetBBox (attr->gstate->font);
if (len)
*len = 0;
num_rest = HPDF_StrLen (text, HPDF_LIMIT_MAX_STRING_LEN + 1);
if (num_rest > HPDF_LIMIT_MAX_STRING_LEN) {
return HPDF_RaiseError (page->error, HPDF_STRING_OUT_OF_RANGE, 0);
} else if (!num_rest)
return HPDF_OK;
if (attr->gstate->text_leading == 0)
HPDF_Page_SetTextLeading (page, (bbox.top - bbox.bottom) / 1000 *
attr->gstate->font_size);
top = top - bbox.top / 1000 * attr->gstate->font_size +
attr->gstate->text_leading;
bottom = bottom - bbox.bottom / 1000 * attr->gstate->font_size;
if (align == HPDF_TALIGN_JUSTIFY) {
save_char_space = attr->gstate->char_space;
attr->gstate->char_space = 0;
}
for (;;) {
HPDF_REAL x, y;
HPDF_UINT line_len, tmp_len;
HPDF_REAL rw;
HPDF_BOOL LineBreak;
attr->gstate->char_space = 0;
line_len = tmp_len = HPDF_Page_MeasureText (page, ptr, right - left, HPDF_TRUE, &rw);
if (line_len == 0) {
is_insufficient_space = HPDF_TRUE;
break;
}
if (len)
*len += line_len;
num_rest -= line_len;
/* Shorten tmp_len by trailing whitespace and control characters. */
LineBreak = HPDF_FALSE;
while (tmp_len > 0 && HPDF_IS_WHITE_SPACE(ptr[tmp_len - 1])) {
tmp_len--;
if (ptr[tmp_len] == 0x0A || ptr[tmp_len] == 0x0D) {
LineBreak = HPDF_TRUE;
}
}
switch (align) {
case HPDF_TALIGN_RIGHT:
TextPos_AbsToRel (attr->text_matrix, right - rw, top, &x, &y);
if (!pos_initialized) {
pos_initialized = HPDF_TRUE;
} else {
y = 0;
}
if ((ret = HPDF_Page_MoveTextPos (page, x, y)) != HPDF_OK)
return ret;
break;
case HPDF_TALIGN_CENTER:
TextPos_AbsToRel (attr->text_matrix, left + (right - left - rw) / 2, top, &x, &y);
if (!pos_initialized) {
pos_initialized = HPDF_TRUE;
} else {
y = 0;
}
if ((ret = HPDF_Page_MoveTextPos (page, x, y)) != HPDF_OK)
return ret;
break;
case HPDF_TALIGN_JUSTIFY:
if (!pos_initialized) {
pos_initialized = HPDF_TRUE;
TextPos_AbsToRel (attr->text_matrix, left, top, &x, &y);
if ((ret = HPDF_Page_MoveTextPos (page, x, y)) != HPDF_OK)
return ret;
}
/* Do not justify last line of paragraph or text. */
if (LineBreak || num_rest <= 0) {
if ((ret = HPDF_Page_SetCharSpace (page, save_char_space))
!= HPDF_OK)
return ret;
char_space_changed = HPDF_FALSE;
} else {
HPDF_REAL x_adjust;
HPDF_ParseText_Rec state;
HPDF_UINT i = 0;
HPDF_UINT num_char = 0;
HPDF_Encoder encoder = ((HPDF_FontAttr)attr->gstate->font->attr)->encoder;
const char *tmp_ptr = ptr;
HPDF_Encoder_SetParseText (encoder, &state, (HPDF_BYTE *)tmp_ptr, tmp_len);
while (*tmp_ptr) {
HPDF_ByteType btype = HPDF_Encoder_ByteType (encoder, &state);
if (btype != HPDF_BYTE_TYPE_TRIAL)
num_char++;
i++;
if (i >= tmp_len)
break;
tmp_ptr++;
}
x_adjust = num_char == 0 ? 0 : (right - left - rw) / (num_char - 1);
if ((ret = HPDF_Page_SetCharSpace (page, x_adjust)) != HPDF_OK)
return ret;
char_space_changed = HPDF_TRUE;
}
break;
default:
if (!pos_initialized) {
pos_initialized = HPDF_TRUE;
TextPos_AbsToRel (attr->text_matrix, left, top, &x, &y);
if ((ret = HPDF_Page_MoveTextPos (page, x, y)) != HPDF_OK)
return ret;
}
}
if (InternalShowTextNextLine (page, ptr, tmp_len) != HPDF_OK)
return HPDF_CheckError (page->error);
if (num_rest <= 0)
break;
if (attr->text_pos.y - attr->gstate->text_leading < bottom) {
is_insufficient_space = HPDF_TRUE;
break;
}
ptr += line_len;
}
if (char_space_changed && save_char_space != attr->gstate->char_space) {
if ((ret = HPDF_Page_SetCharSpace (page, save_char_space)) != HPDF_OK)
return ret;
}
if (is_insufficient_space)
return HPDF_PAGE_INSUFFICIENT_SPACE;
else
return HPDF_OK;
}
static HPDF_STATUS
InternalShowTextNextLine (HPDF_Page page,
const char *text,
HPDF_UINT len)
{
HPDF_STATUS ret;
HPDF_PageAttr attr;
HPDF_REAL tw;
HPDF_FontAttr font_attr;
HPDF_PTRACE ((" ShowTextNextLine\n"));
attr = (HPDF_PageAttr)page->attr;
font_attr = (HPDF_FontAttr)attr->gstate->font->attr;
if (font_attr->type == HPDF_FONT_TYPE0_TT ||
font_attr->type == HPDF_FONT_TYPE0_CID) {
HPDF_Encoder encoder = font_attr->encoder;
if ((ret = HPDF_Stream_WriteStr (attr->stream, "<")) != HPDF_OK)
return ret;
if (encoder->encode_text_fn == NULL) {
if ((ret = HPDF_Stream_WriteBinary (attr->stream, (HPDF_BYTE *)text,
len, NULL))
!= HPDF_OK)
return ret;
} else {
char *encoded;
HPDF_UINT length;
encoded = (encoder->encode_text_fn)(encoder, text, len, &length);
ret = HPDF_Stream_WriteBinary (attr->stream, (HPDF_BYTE *)encoded,
length, NULL);
free(encoded);
if (ret != HPDF_OK)
return ret;
}
if ((ret = HPDF_Stream_WriteStr (attr->stream, ">")) != HPDF_OK)
return ret;
} else if ((ret = HPDF_Stream_WriteEscapeText2 (attr->stream, text,
len)) != HPDF_OK)
return ret;
if ((ret = HPDF_Stream_WriteStr (attr->stream, " \'\012")) != HPDF_OK)
return ret;
tw = HPDF_Page_TextWidth (page, text);
/* calculate the reference point of text */
attr->text_matrix.x -= attr->gstate->text_leading * attr->text_matrix.c;
attr->text_matrix.y -= attr->gstate->text_leading * attr->text_matrix.d;
attr->text_pos.x = attr->text_matrix.x;
attr->text_pos.y = attr->text_matrix.y;
if (attr->gstate->writing_mode == HPDF_WMODE_HORIZONTAL) {
attr->text_pos.x += tw * attr->text_matrix.a;
attr->text_pos.y += tw * attr->text_matrix.b;
} else {
attr->text_pos.x -= tw * attr->text_matrix.b;
attr->text_pos.y -= tw * attr->text_matrix.a;
}
return ret;
}
/*
* This function is contributed by Adrian Nelson (adenelson).
*/
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_SetSlideShow (HPDF_Page page,
HPDF_TransitionStyle type,
HPDF_REAL disp_time,
HPDF_REAL trans_time)
{
HPDF_STATUS ret = HPDF_OK;
HPDF_Dict dict;
HPDF_PTRACE((" HPDF_Page_SetSlideShow\n"));
if (!HPDF_Page_Validate (page))
return HPDF_INVALID_PAGE;
if (disp_time < 0)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_DISPLAY_TIME,
(HPDF_STATUS)disp_time);
if (trans_time < 0)
return HPDF_RaiseError (page->error, HPDF_PAGE_INVALID_TRANSITION_TIME,
(HPDF_STATUS)trans_time);
dict = HPDF_Dict_New(page->mmgr);
if (!dict)
return HPDF_Error_GetCode (page->error);
if (HPDF_Dict_AddName (dict, "Type", "Trans") != HPDF_OK)
goto Fail;
if (HPDF_Dict_AddReal (dict, "D", trans_time) != HPDF_OK)
goto Fail;
switch (type) {
case HPDF_TS_WIPE_RIGHT:
ret += HPDF_Dict_AddName (dict, "S", "Wipe");
ret += HPDF_Dict_AddNumber (dict, "Di", 0);
break;
case HPDF_TS_WIPE_UP:
ret += HPDF_Dict_AddName (dict, "S", "Wipe");
ret += HPDF_Dict_AddNumber (dict, "Di", 90);
break;
case HPDF_TS_WIPE_LEFT:
ret += HPDF_Dict_AddName (dict, "S", "Wipe");
ret += HPDF_Dict_AddNumber (dict, "Di", 180);
break;
case HPDF_TS_WIPE_DOWN:
ret += HPDF_Dict_AddName (dict, "S", "Wipe");
ret += HPDF_Dict_AddNumber (dict, "Di", 270);
break;
case HPDF_TS_BARN_DOORS_HORIZONTAL_OUT:
ret += HPDF_Dict_AddName (dict, "S", "Split");
ret += HPDF_Dict_AddName (dict, "Dm", "H");
ret += HPDF_Dict_AddName (dict, "M", "O");
break;
case HPDF_TS_BARN_DOORS_HORIZONTAL_IN:
ret += HPDF_Dict_AddName (dict, "S", "Split");
ret += HPDF_Dict_AddName (dict, "Dm", "H");
ret += HPDF_Dict_AddName (dict, "M", "I");
break;
case HPDF_TS_BARN_DOORS_VERTICAL_OUT:
ret += HPDF_Dict_AddName (dict, "S", "Split");
ret += HPDF_Dict_AddName (dict, "Dm", "V");
ret += HPDF_Dict_AddName (dict, "M", "O");
break;
case HPDF_TS_BARN_DOORS_VERTICAL_IN:
ret += HPDF_Dict_AddName (dict, "S", "Split");
ret += HPDF_Dict_AddName (dict, "Dm", "V");
ret += HPDF_Dict_AddName (dict, "M", "I");
break;
case HPDF_TS_BOX_OUT:
ret += HPDF_Dict_AddName (dict, "S", "Box");
ret += HPDF_Dict_AddName (dict, "M", "O");
break;
case HPDF_TS_BOX_IN:
ret += HPDF_Dict_AddName (dict, "S", "Box");
ret += HPDF_Dict_AddName (dict, "M", "I");
break;
case HPDF_TS_BLINDS_HORIZONTAL:
ret += HPDF_Dict_AddName (dict, "S", "Blinds");
ret += HPDF_Dict_AddName (dict, "Dm", "H");
break;
case HPDF_TS_BLINDS_VERTICAL:
ret += HPDF_Dict_AddName (dict, "S", "Blinds");
ret += HPDF_Dict_AddName (dict, "Dm", "V");
break;
case HPDF_TS_DISSOLVE:
ret += HPDF_Dict_AddName (dict, "S", "Dissolve");
break;
case HPDF_TS_GLITTER_RIGHT:
ret += HPDF_Dict_AddName (dict, "S", "Glitter");
ret += HPDF_Dict_AddNumber (dict, "Di", 0);
break;
case HPDF_TS_GLITTER_DOWN:
ret += HPDF_Dict_AddName (dict, "S", "Glitter");
ret += HPDF_Dict_AddNumber (dict, "Di", 270);
break;
case HPDF_TS_GLITTER_TOP_LEFT_TO_BOTTOM_RIGHT:
ret += HPDF_Dict_AddName (dict, "S", "Glitter");
ret += HPDF_Dict_AddNumber (dict, "Di", 315);
break;
case HPDF_TS_REPLACE:
ret += HPDF_Dict_AddName (dict, "S", "R");
break;
default:
ret += HPDF_SetError(page->error, HPDF_INVALID_PAGE_SLIDESHOW_TYPE, 0);
}
if (ret != HPDF_OK)
goto Fail;
if (HPDF_Dict_AddReal (page, "Dur", disp_time) != HPDF_OK)
goto Fail;
if ((ret = HPDF_Dict_Add (page, "Trans", dict)) != HPDF_OK)
return ret;
return HPDF_OK;
Fail:
HPDF_Dict_Free (dict);
return HPDF_Error_GetCode (page->error);
}
/*
* This function is contributed by Finn Arildsen.
*/
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_New_Content_Stream (HPDF_Page page,
HPDF_Dict* new_stream)
{
/* Call this function to start a new content stream on a page. The
handle is returned to new_stream.
new_stream can later be used on other pages as a shared content stream;
insert using HPDF_Page_Insert_Shared_Content_Stream */
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_PageAttr attr;
HPDF_UINT filter;
HPDF_Array contents_array;
HPDF_PTRACE((" HPDF_Page_New_Content_Stream\n"));
attr = (HPDF_PageAttr)page->attr;
filter = attr->contents->filter;
/* check if there is already an array of contents */
contents_array = (HPDF_Array) HPDF_Dict_GetItem(page,"Contents", HPDF_OCLASS_ARRAY);
if (!contents_array) {
HPDF_Error_Reset (page->error);
/* no contents_array already -- create one
and replace current single contents item */
contents_array = HPDF_Array_New(page->mmgr);
if (!contents_array)
return HPDF_Error_GetCode (page->error);
ret += HPDF_Array_Add(contents_array,attr->contents);
ret += HPDF_Dict_Add (page, "Contents", contents_array);
}
/* create new contents stream and add it to the page's contents array */
attr->contents = HPDF_DictStream_New (page->mmgr, attr->xref);
attr->contents->filter = filter;
attr->stream = attr->contents->stream;
if (!attr->contents)
return HPDF_Error_GetCode (page->error);
ret += HPDF_Array_Add (contents_array,attr->contents);
/* return the value of the new stream, so that
the application can use it as a shared contents stream */
if (ret == HPDF_OK && new_stream != NULL)
*new_stream = attr->contents;
return ret;
}
/*
* This function is contributed by Finn Arildsen.
*/
HPDF_EXPORT(HPDF_STATUS)
HPDF_Page_Insert_Shared_Content_Stream (HPDF_Page page,
HPDF_Dict shared_stream)
{
/* Call this function to insert a previously (with HPDF_New_Content_Stream) created content stream
as a shared content stream on this page */
HPDF_STATUS ret = HPDF_Page_CheckState (page, HPDF_GMODE_PAGE_DESCRIPTION |
HPDF_GMODE_TEXT_OBJECT);
HPDF_Array contents_array;
HPDF_PTRACE((" HPDF_Page_Insert_Shared_Content_Stream\n"));
/* check if there is already an array of contents */
contents_array = (HPDF_Array) HPDF_Dict_GetItem(page,"Contents", HPDF_OCLASS_ARRAY);
if (!contents_array) {
HPDF_PageAttr attr;
HPDF_Error_Reset (page->error);
/* no contents_array already -- create one
and replace current single contents item */
contents_array = HPDF_Array_New(page->mmgr);
if (!contents_array)
return HPDF_Error_GetCode (page->error);
attr = (HPDF_PageAttr)page->attr;
ret += HPDF_Array_Add(contents_array,attr->contents);
ret += HPDF_Dict_Add (page, "Contents", contents_array);
}
ret += HPDF_Array_Add (contents_array,shared_stream);
/* Continue with a new stream */
ret += HPDF_Page_New_Content_Stream (page, NULL);
return ret;
}
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