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/*
* << Haru Free PDF Library 2.0.3 >> -- hpdf_font.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.
*
* 2006.07.25 modified.
*/
#include "hpdf_conf.h"
#include "hpdf_utils.h"
#include "hpdf.h"
HPDF_EXPORT(HPDF_TextWidth)
HPDF_Font_TextWidth (HPDF_Font font,
const HPDF_BYTE *text,
HPDF_UINT len)
{
HPDF_TextWidth tw = {0, 0, 0, 0};
HPDF_FontAttr attr;
HPDF_PTRACE ((" HPDF_Font_TextWidth\n"));
if (!HPDF_Font_Validate(font))
return tw;
if (len > HPDF_LIMIT_MAX_STRING_LEN) {
HPDF_RaiseError (font->error, HPDF_STRING_OUT_OF_RANGE, 0);
return tw;
}
attr = (HPDF_FontAttr)font->attr;
if (!attr->text_width_fn) {
HPDF_SetError (font->error, HPDF_INVALID_OBJECT, 0);
return tw;
}
tw = attr->text_width_fn (font, text, len);
return tw;
}
HPDF_EXPORT(HPDF_UINT)
HPDF_Font_MeasureText (HPDF_Font font,
const HPDF_BYTE *text,
HPDF_UINT len,
HPDF_REAL width,
HPDF_REAL font_size,
HPDF_REAL char_space,
HPDF_REAL word_space,
HPDF_BOOL wordwrap,
HPDF_REAL *real_width)
{
HPDF_FontAttr attr;
HPDF_PTRACE ((" HPDF_Font_MeasureText\n"));
if (!HPDF_Font_Validate(font))
return 0;
if (len > HPDF_LIMIT_MAX_STRING_LEN) {
HPDF_RaiseError (font->error, HPDF_STRING_OUT_OF_RANGE, 0);
return 0;
}
attr = (HPDF_FontAttr)font->attr;
if (!attr->measure_text_fn) {
HPDF_RaiseError (font->error, HPDF_INVALID_OBJECT, 0);
return 0;
}
return attr->measure_text_fn (font, text, len, width, font_size,
char_space, word_space, wordwrap, real_width);
}
HPDF_EXPORT(const char*)
HPDF_Font_GetFontName (HPDF_Font font)
{
HPDF_FontAttr attr;
HPDF_PTRACE((" HPDF_Font_GetFontName\n"));
if (!HPDF_Font_Validate(font))
return NULL;
attr = (HPDF_FontAttr)font->attr;
return attr->fontdef->base_font;
}
HPDF_EXPORT(const char*)
HPDF_Font_GetEncodingName (HPDF_Font font)
{
HPDF_FontAttr attr;
HPDF_PTRACE((" HPDF_Font_GetEncodingName\n"));
if (!HPDF_Font_Validate(font))
return NULL;
attr = (HPDF_FontAttr)font->attr;
return attr->encoder->name;
}
HPDF_EXPORT(HPDF_INT)
HPDF_Font_GetUnicodeWidth (HPDF_Font font,
HPDF_UNICODE code)
{
HPDF_FontAttr attr;
HPDF_FontDef fontdef;
HPDF_PTRACE((" HPDF_Font_GetUnicodeWidth\n"));
if (!HPDF_Font_Validate(font))
return 0;
attr = (HPDF_FontAttr)font->attr;
fontdef = attr->fontdef;
if (fontdef->type == HPDF_FONTDEF_TYPE_TYPE1) {
return HPDF_Type1FontDef_GetWidth (fontdef, code);
} else if (fontdef->type == HPDF_FONTDEF_TYPE_TRUETYPE) {
return HPDF_TTFontDef_GetCharWidth (fontdef, code);
} else if (fontdef->type == HPDF_FONTDEF_TYPE_CID) {
HPDF_CMapEncoderAttr encoder_attr =
(HPDF_CMapEncoderAttr)attr->encoder->attr;
HPDF_UINT l, h;
for (l = 0; l <= 255; l++) {
for (h = 0; h < 255; h++) {
if (code == encoder_attr->unicode_map[l][h]) {
HPDF_UINT16 cid = encoder_attr->cid_map[l][h];
return HPDF_CIDFontDef_GetCIDWidth (fontdef, cid);
}
}
}
}
HPDF_PTRACE((" HPDF_Font_GetUnicodeWidth not found (0x%04X)\n", code));
return 0;
}
HPDF_EXPORT(HPDF_Box)
HPDF_Font_GetBBox (HPDF_Font font)
{
HPDF_Box bbox = {0, 0, 0, 0};
HPDF_PTRACE((" HPDF_Font_GetBBox\n"));
if (HPDF_Font_Validate(font))
return ((HPDF_FontAttr)font->attr)->fontdef->font_bbox;
return bbox;
}
HPDF_EXPORT(HPDF_INT)
HPDF_Font_GetAscent (HPDF_Font font)
{
HPDF_PTRACE((" HPDF_Font_GetAscent\n"));
if (HPDF_Font_Validate(font))
return ((HPDF_FontAttr)font->attr)->fontdef->ascent;
return 0;
}
HPDF_EXPORT(HPDF_INT)
HPDF_Font_GetDescent (HPDF_Font font)
{
HPDF_PTRACE((" HPDF_Font_GetDescent\n"));
if (HPDF_Font_Validate(font))
return ((HPDF_FontAttr)font->attr)->fontdef->descent;
return 0;
}
HPDF_EXPORT(HPDF_UINT)
HPDF_Font_GetXHeight (HPDF_Font font)
{
HPDF_PTRACE((" HPDF_Font_GetXHeight\n"));
if (HPDF_Font_Validate(font))
return ((HPDF_FontAttr)font->attr)->fontdef->x_height;
return 0;
}
HPDF_EXPORT(HPDF_UINT)
HPDF_Font_GetCapHeight (HPDF_Font font)
{
HPDF_PTRACE((" HPDF_Font_GetCapHeight\n"));
if (HPDF_Font_Validate(font))
return ((HPDF_FontAttr)font->attr)->fontdef->cap_height;
return 0;
}
HPDF_BOOL
HPDF_Font_Validate (HPDF_Font font)
{
HPDF_PTRACE((" HPDF_Font_Validate\n"));
if (!font || !font->attr || font->header.obj_class !=
(HPDF_OSUBCLASS_FONT | HPDF_OCLASS_DICT))
return HPDF_FALSE;
return HPDF_TRUE;
}