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netsurf/frontends/amiga/font_bullet.c
Chris Young ed84f7a018 Amiga: avoid read from NULL pointer
2020-05-26 18:05:14 +01:00

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/*
* Copyright 2008 - 2019 Chris Young <chris@unsatisfactorysoftware.co.uk>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file
* Amiga font handling implementation
*/
#include "amiga/os3support.h"
#include <stdlib.h>
#ifndef __amigaos4__
#include <proto/bullet.h>
#endif
#include <proto/diskfont.h>
#include <proto/exec.h>
#include <proto/graphics.h>
#include <proto/utility.h>
#include <diskfont/diskfonttag.h>
#include <diskfont/oterrors.h>
#include "utils/log.h"
#include "utils/nsoption.h"
#include "utils/utf8.h"
#include "utils/utils.h"
#include "amiga/memory.h"
#include "amiga/misc.h"
#include "amiga/font.h"
#include "amiga/font_bullet.h"
#include "amiga/font_cache.h"
#include "amiga/font_scan.h"
#define NSA_UNICODE_FONT PLOT_FONT_FAMILY_COUNT
#define NSA_NORMAL 0
#define NSA_ITALIC 1
#define NSA_BOLD 2
#define NSA_BOLDITALIC 3
#define NSA_OBLIQUE 4
#define NSA_BOLDOBLIQUE 6
#define NSA_VALUE_BOLDX (1 << 12)
#define NSA_VALUE_BOLDY 0
#define NSA_VALUE_SHEARSIN (1 << 14)
#define NSA_VALUE_SHEARCOS (1 << 16)
#define NSA_FONT_EMWIDTH(s) (s / PLOT_STYLE_SCALE) * (ami_font_dpi_get_xdpi() / 72.0)
const uint16 sc_table[] = {
0x0061, 0x1D00, /* a */
0x0062, 0x0299, /* b */
0x0063, 0x1D04, /* c */
0x0064, 0x1D05, /* d */
0x0065, 0x1D07, /* e */
0x0066, 0xA730, /* f */
0x0067, 0x0262, /* g */
0x0068, 0x029C, /* h */
0x0069, 0x026A, /* i */
0x006A, 0x1D0A, /* j */
0x006B, 0x1D0B, /* k */
0x006C, 0x029F, /* l */
0x006D, 0x1D0D, /* m */
0x006E, 0x0274, /* n */
0x006F, 0x1D0F, /* o */
0x0070, 0x1D18, /* p */
0x0071, 0xA7AF, /* q */
0x0072, 0x0280, /* r */
0x0073, 0xA731, /* s */
0x0074, 0x1D1B, /* t */
0x0075, 0x1D1C, /* u */
0x0076, 0x1D20, /* v */
0x0077, 0x1D21, /* w */
0x0078, 0xA7EF, /* x (proposed) (Adobe codepoint 0xF778) */
0x0079, 0x028F, /* y */
0x007A, 0x1D22, /* z */
0x00C6, 0x1D01, /* ae */
0x0153, 0x0276, /* oe */
#if 0
/* TODO: fill in the non-small caps character ids for these */
0x0000, 0x1D03, /* barred b */
0x0000, 0x0281, /* inverted r */
0x0000, 0x1D19, /* reversed r */
0x0000, 0x1D1A, /* turned r */
0x0000, 0x029B, /* g with hook */
0x0000, 0x1D06, /* eth Ð */
0x0000, 0x1D0C, /* l with stroke */
0x0000, 0xA7FA, /* turned m */
0x0000, 0x1D0E, /* reversed n */
0x0000, 0x1D10, /* open o */
0x0000, 0x1D15, /* ou */
0x0000, 0x1D23, /* ezh */
0x0000, 0x1D26, /* gamma */
0x0000, 0x1D27, /* lamda */
0x0000, 0x1D28, /* pi */
0x0000, 0x1D29, /* rho */
0x0000, 0x1D2A, /* psi */
0x0000, 0x1D2B, /* el */
0x0000, 0xA776, /* rum */
0x0000, 0x1DDB, /* combining g */
0x0000, 0x1DDE, /* combining l */
0x0000, 0x1DDF, /* combining m */
0x0000, 0x1DE1, /* combining n */
0x0000, 0x1DE2, /* combining r */
0x0000, 0x1DA6, /* modifier i */
0x0000, 0x1DA7, /* modifier i with stroke */
0x0000, 0x1DAB, /* modifier l */
0x0000, 0x1DB0, /* modifier n */
0x0000, 0x1DB8, /* modifier u */
#endif
0, 0};
static lwc_string *glypharray[0xffff + 1];
static struct List ami_diskfontlib_list;
static inline int32 ami_font_plot_glyph(struct OutlineFont *ofont, struct RastPort *rp,
uint16 *restrict char1, uint16 *restrict char2, uint32 x, uint32 y, uint32 emwidth, bool aa);
static inline int32 ami_font_width_glyph(struct OutlineFont *ofont,
const uint16 *restrict char1, const uint16 *restrict char2, uint32 emwidth);
static struct OutlineFont *ami_open_outline_font(const plot_font_style_t *fstyle,
const uint16 *codepoint);
static inline ULONG ami_font_unicode_width(const char *string, ULONG length,
const plot_font_style_t *fstyle, ULONG x, ULONG y, bool aa);
static inline int amiga_nsfont_utf16_char_length(const uint16 *char1)
{
if (__builtin_expect(((*char1 < 0xD800) || (0xDBFF < *char1)), 1)) {
return 1;
} else {
return 2;
}
}
static inline uint32 amiga_nsfont_decode_surrogate(const uint16 *char1)
{
if(__builtin_expect((amiga_nsfont_utf16_char_length(char1) == 2), 0)) {
return ((uint32)char1[0] << 10) + char1[1] - 0x35FDC00;
} else {
return (uint32)*char1;
}
}
static nserror amiga_nsfont_width(const plot_font_style_t *fstyle,
const char *string, size_t length,
int *width)
{
*width = ami_font_unicode_width(string, length, fstyle, 0, 0, false);
if(*width <= 0) {
*width = length; /* fudge */
}
return NSERROR_OK;
}
/**
* Find the position in a string where an x coordinate falls.
*
* \param fstyle style for this text
* \param string UTF-8 string to measure
* \param length length of string
* \param x x coordinate to search for
* \param char_offset updated to offset in string of actual_x, [0..length]
* \param actual_x updated to x coordinate of character closest to x
* \return true on success, false on error and error reported
*/
static nserror amiga_nsfont_position_in_string(const plot_font_style_t *fstyle,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x)
{
uint16 *utf16 = NULL, *outf16 = NULL;
uint16 *utf16next = NULL;
struct OutlineFont *ofont, *ufont = NULL;
int tx = 0;
uint32 utf8_pos = 0;
int utf16charlen;
ULONG emwidth = (ULONG)NSA_FONT_EMWIDTH(fstyle->size);
int32 tempx;
if(utf8_to_enc(string,"UTF-16",length,(char **)&utf16) != NSERROR_OK) return NSERROR_INVALID;
outf16 = utf16;
if(!(ofont = ami_open_outline_font(fstyle, 0))) return NSERROR_INVALID;
*char_offset = 0;
*actual_x = 0;
while (utf8_pos < length) {
utf16charlen = amiga_nsfont_utf16_char_length(utf16);
utf16next = &utf16[utf16charlen];
tempx = ami_font_width_glyph(ofont, utf16, utf16next, emwidth);
if (tempx == 0) {
if (ufont == NULL)
ufont = ami_open_outline_font(fstyle, utf16);
if (ufont)
tempx = ami_font_width_glyph(ufont, utf16,
utf16next, emwidth);
}
tx += tempx;
utf16 = utf16next;
utf8_pos = utf8_next(string, length, utf8_pos);
if(tx < x) {
*actual_x = tx;
*char_offset = utf8_pos;
} else {
if((x - *actual_x) > (tx - x)) {
*actual_x = tx;
*char_offset = utf8_pos;
}
free(outf16);
return NSERROR_OK;
}
}
*actual_x = tx;
*char_offset = length;
free(outf16);
return NSERROR_OK;
}
/**
* Find where to split a string to make it fit a width.
*
* \param fstyle style for this text
* \param string UTF-8 string to measure
* \param length length of string
* \param x width available
* \param char_offset updated to offset in string of actual_x, [1..length]
* \param actual_x updated to x coordinate of character closest to x
* \return true on success, false on error and error reported
*
* On exit, char_offset indicates first character after split point.
*
* Note: char_offset of 0 should never be returned.
*
* Returns:
* char_offset giving split point closest to x, where actual_x <= x
* else
* char_offset giving split point closest to x, where actual_x > x
*
* Returning char_offset == length means no split possible
*/
static nserror amiga_nsfont_split(const plot_font_style_t *fstyle,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x)
{
uint16 *utf16_str = NULL;
const uint16 *utf16 = NULL;
const uint16 *utf16next = NULL;
struct OutlineFont *ofont, *ufont = NULL;
int tx = 0;
uint32 utf8_pos = 0;
int32 tempx = 0;
ULONG emwidth = (ULONG)NSA_FONT_EMWIDTH(fstyle->size);
/* Get utf16 conversion of string for glyph measuring routines */
if (utf8_to_enc(string, "UTF-16", length, (char **)&utf16_str) !=
NSERROR_OK)
return NSERROR_INVALID;
utf16 = utf16_str;
if (!(ofont = ami_open_outline_font(fstyle, 0)))
return NSERROR_INVALID;
*char_offset = 0;
*actual_x = 0;
if (*utf16 == 0xFEFF) utf16++;
while (utf8_pos < length) {
if ((*utf16 < 0xD800) || (0xDBFF < *utf16))
utf16next = utf16 + 1;
else
utf16next = utf16 + 2;
tempx = ami_font_width_glyph(ofont, utf16, utf16next, emwidth);
if (tempx == 0) {
if (ufont == NULL)
ufont = ami_open_outline_font(fstyle, utf16);
if (ufont)
tempx = ami_font_width_glyph(ufont, utf16,
utf16next, emwidth);
}
/* Check whether we have a space */
if (*(string + utf8_pos) == ' ') {
/* Got a space */
*actual_x = tx;
*char_offset = utf8_pos;
}
tx += tempx;
if ((x < tx) && (*char_offset != 0)) {
/* Reached available width, and a space was found;
* split there. */
free(utf16_str);
return NSERROR_OK;
}
utf16 = utf16next;
utf8_pos = utf8_next(string, length, utf8_pos);
}
free(utf16_str);
/* No spaces to split at, or everything fits */
assert(*char_offset == 0 || x >= tx);
*char_offset = length;
*actual_x = tx;
return NSERROR_OK;
}
/**
* Search for a font in the list and load from disk if not present
*/
static struct ami_font_cache_node *ami_font_open(const char *font, bool critical)
{
if(font == NULL) {
NSLOG(netsurf, INFO, "Requested NULL font");
return NULL;
}
struct ami_font_cache_node *nodedata = ami_font_cache_locate(font);
if(nodedata) return nodedata;
nodedata = ami_font_cache_alloc_entry(font);
if(nodedata == NULL) {
amiga_warn_user("NoMemory", "");
return NULL;
}
nodedata->font = OpenOutlineFont(font, &ami_diskfontlib_list, OFF_OPEN);
if(!nodedata->font)
{
NSLOG(netsurf, INFO, "Requested font not found: %s", font);
if(critical == true) amiga_warn_user("CompError", font);
free(nodedata);
return NULL;
}
nodedata->bold = (char *)GetTagData(OT_BName, 0, nodedata->font->olf_OTagList);
if(nodedata->bold)
NSLOG(netsurf, INFO, "Bold font defined for %s is %s", font,
nodedata->bold);
else
NSLOG(netsurf, INFO,
"Warning: No designed bold font defined for %s", font);
nodedata->italic = (char *)GetTagData(OT_IName, 0, nodedata->font->olf_OTagList);
if(nodedata->italic)
NSLOG(netsurf, INFO, "Italic font defined for %s is %s",
font, nodedata->italic);
else
NSLOG(netsurf, INFO,
"Warning: No designed italic font defined for %s", font);
nodedata->bolditalic = (char *)GetTagData(OT_BIName, 0, nodedata->font->olf_OTagList);
if(nodedata->bolditalic)
NSLOG(netsurf, INFO, "Bold-italic font defined for %s is %s",
font, nodedata->bolditalic);
else
NSLOG(netsurf, INFO,
"Warning: No designed bold-italic font defined for %s",
font);
ami_font_cache_insert(nodedata, font);
return nodedata;
}
/**
* Open an outline font in the specified size and style
*
* \param fstyle font style structure
* \param codepoint open a default font instead of the one specified by fstyle
* \return outline font or NULL on error
*/
static struct OutlineFont *ami_open_outline_font(const plot_font_style_t *fstyle,
const uint16 *codepoint)
{
struct ami_font_cache_node *node;
struct ami_font_cache_node *designed_node = NULL;
struct OutlineFont *ofont;
char *fontname;
ULONG ysize;
int tstyle = 0;
plot_font_generic_family_t fontfamily;
ULONG emboldenx = 0;
ULONG emboldeny = 0;
ULONG shearsin = 0;
ULONG shearcos = (1 << 16);
if(codepoint) fontfamily = NSA_UNICODE_FONT;
else fontfamily = fstyle->family;
switch(fontfamily)
{
case PLOT_FONT_FAMILY_SANS_SERIF:
fontname = nsoption_charp(font_sans);
break;
case PLOT_FONT_FAMILY_SERIF:
fontname = nsoption_charp(font_serif);
break;
case PLOT_FONT_FAMILY_MONOSPACE:
fontname = nsoption_charp(font_mono);
break;
case PLOT_FONT_FAMILY_CURSIVE:
fontname = nsoption_charp(font_cursive);
break;
case PLOT_FONT_FAMILY_FANTASY:
fontname = nsoption_charp(font_fantasy);
break;
case NSA_UNICODE_FONT:
default:
if(__builtin_expect((amiga_nsfont_utf16_char_length(codepoint) == 2), 0)) {
/* Multi-byte character */
fontname = nsoption_charp(font_surrogate);
} else {
fontname = (char *)ami_font_scan_lookup(codepoint, glypharray);
}
if(fontname == NULL) return NULL;
break;
}
node = ami_font_open(fontname, true);
if(!node) return NULL;
if (fstyle->flags & FONTF_OBLIQUE)
tstyle = NSA_OBLIQUE;
if (fstyle->flags & FONTF_ITALIC)
tstyle = NSA_ITALIC;
if (fstyle->weight >= 700)
tstyle += NSA_BOLD;
switch(tstyle)
{
case NSA_ITALIC:
if(node->italic) designed_node = ami_font_open(node->italic, false);
if(designed_node == NULL) {
shearsin = NSA_VALUE_SHEARSIN;
shearcos = NSA_VALUE_SHEARCOS;
}
break;
case NSA_OBLIQUE:
shearsin = NSA_VALUE_SHEARSIN;
shearcos = NSA_VALUE_SHEARCOS;
break;
case NSA_BOLD:
if(node->bold) designed_node = ami_font_open(node->bold, false);
if(designed_node == NULL) {
emboldenx = NSA_VALUE_BOLDX;
emboldeny = NSA_VALUE_BOLDY;
}
break;
case NSA_BOLDOBLIQUE:
shearsin = NSA_VALUE_SHEARSIN;
shearcos = NSA_VALUE_SHEARCOS;
if(node->bold) designed_node = ami_font_open(node->bold, false);
if(designed_node == NULL) {
emboldenx = NSA_VALUE_BOLDX;
emboldeny = NSA_VALUE_BOLDY;
}
break;
case NSA_BOLDITALIC:
if(node->bolditalic) designed_node = ami_font_open(node->bolditalic, false);
if(designed_node == NULL) {
emboldenx = NSA_VALUE_BOLDX;
emboldeny = NSA_VALUE_BOLDY;
shearsin = NSA_VALUE_SHEARSIN;
shearcos = NSA_VALUE_SHEARCOS;
}
break;
}
/* Scale to 16.16 fixed point */
ysize = fstyle->size * ((1 << 16) / PLOT_STYLE_SCALE);
if(designed_node == NULL) {
ofont = node->font;
} else {
ofont = designed_node->font;
}
#ifndef __amigaos4__
struct BulletBase *BulletBase = ofont->BulletBase;
#endif
if(ESetInfo(AMI_OFONT_ENGINE,
OT_DeviceDPI, ami_font_dpi_get_devicedpi(),
OT_PointHeight, ysize,
OT_EmboldenX, emboldenx,
OT_EmboldenY, emboldeny,
OT_ShearSin, shearsin,
OT_ShearCos, shearcos,
TAG_END) == OTERR_Success)
return ofont;
return NULL;
}
static inline int32 ami_font_plot_glyph(struct OutlineFont *ofont, struct RastPort *rp,
uint16 *restrict char1, uint16 *restrict char2, uint32 x, uint32 y,
uint32 emwidth, bool aa)
{
struct GlyphMap *glyph;
UBYTE *glyphbm;
int32 char_advance = 0;
FIXED kern = 0;
ULONG glyphmaptag;
ULONG template_type;
uint32 long_char_1 = 0, long_char_2 = 0;
#ifndef __amigaos4__
struct BulletBase *BulletBase = ofont->BulletBase;
#endif
#ifndef __amigaos4__
if (__builtin_expect(((*char1 >= 0xD800) && (*char1 <= 0xDBFF)), 0)) {
/* We don't support UTF-16 surrogates yet, so just return. */
return 0;
}
if (__builtin_expect(((*char2 >= 0xD800) && (*char2 <= 0xDBFF)), 0)) {
/* Don't attempt to kern a UTF-16 surrogate */
*char2 = 0;
}
#endif
#ifdef __amigaos4__
if(__builtin_expect(aa == true, 1)) {
glyphmaptag = OT_GlyphMap8Bit;
template_type = BLITT_ALPHATEMPLATE;
} else {
#endif
glyphmaptag = OT_GlyphMap;
#ifdef __amigaos4__
template_type = BLITT_TEMPLATE;
}
#endif
long_char_1 = amiga_nsfont_decode_surrogate(char1);
long_char_2 = amiga_nsfont_decode_surrogate(char2);
/**\todo use OT_GlyphCode_32 so we get an error for old font engines */
if(ESetInfo(AMI_OFONT_ENGINE,
OT_GlyphCode, long_char_1,
OT_GlyphCode2, long_char_2,
TAG_END) == OTERR_Success)
{
if(EObtainInfo(AMI_OFONT_ENGINE,
glyphmaptag, &glyph,
TAG_END) == 0)
{
glyphbm = glyph->glm_BitMap;
if(!glyphbm) return 0;
if(rp) {
#ifdef __amigaos4__
BltBitMapTags(BLITA_SrcX, glyph->glm_BlackLeft,
BLITA_SrcY, glyph->glm_BlackTop,
BLITA_DestX, x - glyph->glm_X0 + glyph->glm_BlackLeft,
BLITA_DestY, y - glyph->glm_Y0 + glyph->glm_BlackTop,
BLITA_Width, glyph->glm_BlackWidth,
BLITA_Height, glyph->glm_BlackHeight,
BLITA_Source, glyphbm,
BLITA_SrcType, template_type,
BLITA_Dest, rp,
BLITA_DestType, BLITT_RASTPORT,
BLITA_SrcBytesPerRow, glyph->glm_BMModulo,
TAG_DONE);
#else
/* On OS3 the glyph needs to be in chip RAM */
void *chip_glyph = ami_memory_chip_alloc(glyph->glm_BMModulo * glyph->glm_BMRows);
if(chip_glyph != NULL) {
CopyMem(glyphbm, chip_glyph, glyph->glm_BMModulo * glyph->glm_BMRows);
BltTemplate(chip_glyph + (glyph->glm_BMModulo * glyph->glm_BlackTop) +
((glyph->glm_BlackLeft >> 4) << 1),
glyph->glm_BlackLeft & 0xF, glyph->glm_BMModulo, rp,
x - glyph->glm_X0 + glyph->glm_BlackLeft,
y - glyph->glm_Y0 + glyph->glm_BlackTop,
glyph->glm_BlackWidth, glyph->glm_BlackHeight);
ami_memory_chip_free(chip_glyph);
}
#endif
}
kern = 0;
if(*char2) EObtainInfo(AMI_OFONT_ENGINE,
OT_TextKernPair, &kern,
TAG_END);
char_advance = (ULONG)(((glyph->glm_Width - kern) * emwidth) / 65536);
EReleaseInfo(AMI_OFONT_ENGINE,
glyphmaptag, glyph,
TAG_END);
if(*char2) EReleaseInfo(AMI_OFONT_ENGINE,
OT_TextKernPair, kern,
TAG_END);
}
}
return char_advance;
}
static inline int32 ami_font_width_glyph(struct OutlineFont *ofont,
const uint16 *restrict char1, const uint16 *restrict char2, uint32 emwidth)
{
int32 char_advance = 0;
FIXED kern = 0;
struct MinList *gwlist = NULL;
struct GlyphWidthEntry *gwnode;
bool skip_c2 = false;
uint32 long_char_1 = 0;
uint32 long_char_2;
#ifndef __amigaos4__
struct BulletBase *BulletBase = ofont->BulletBase;
#endif
#ifndef __amigaos4__
if (__builtin_expect(((*char1 >= 0xD800) && (*char1 <= 0xDBFF)), 0)) {
/* We don't support UTF-16 surrogates yet, so just return. */
return 0;
}
if (__builtin_expect(((*char2 >= 0xD800) && (*char2 <= 0xDBFF)), 0)) {
/* Don't attempt to kern a UTF-16 surrogate */
skip_c2 = true;
}
#endif
if (*char2 < 0x0020) skip_c2 = true;
long_char_1 = amiga_nsfont_decode_surrogate(char1);
/**\todo use OT_GlyphCode_32 so we get an error for old font engines */
if(ESetInfo(AMI_OFONT_ENGINE,
OT_GlyphCode, long_char_1,
OT_GlyphCode2, long_char_1,
TAG_END) == OTERR_Success)
{
if(EObtainInfo(AMI_OFONT_ENGINE,
OT_WidthList, &gwlist,
TAG_END) == 0)
{
FIXED char1w = 0;
gwnode = (struct GlyphWidthEntry *)GetHead((struct List *)gwlist);
if(gwnode) char1w = gwnode->gwe_Width;
kern = 0;
if(!skip_c2) {
long_char_2 = amiga_nsfont_decode_surrogate(char2);
if(ESetInfo(AMI_OFONT_ENGINE,
OT_GlyphCode, long_char_1,
OT_GlyphCode2, long_char_2,
TAG_END) == OTERR_Success)
{
EObtainInfo(AMI_OFONT_ENGINE,
OT_TextKernPair, &kern,
TAG_END);
}
}
char_advance = (ULONG)(((char1w - kern) * emwidth) / 65536);
if(!skip_c2) EReleaseInfo(AMI_OFONT_ENGINE,
OT_TextKernPair, kern,
TAG_END);
EReleaseInfo(AMI_OFONT_ENGINE,
OT_WidthList, gwlist,
TAG_END);
}
}
return char_advance;
}
static const uint16 *ami_font_translate_smallcaps(uint16 *utf16char)
{
const uint16 *p;
p = &sc_table[0];
while (*p != 0)
{
if(*p == *utf16char) return &p[1];
p++;
}
return utf16char;
}
static ULONG amiga_nsfont_text(struct RastPort *rp, const char *string, ULONG length,
const plot_font_style_t *fstyle, ULONG dx, ULONG dy, bool aa)
{
uint16 *restrict utf16 = NULL, *restrict outf16 = NULL;
uint16 *restrict utf16charsc = 0, *restrict utf16nextsc = 0;
uint16 *restrict utf16next = 0;
int utf16charlen;
struct OutlineFont *restrict ofont, *restrict ufont = NULL;
uint32 x=0;
int32 tempx = 0;
ULONG emwidth = (ULONG)NSA_FONT_EMWIDTH(fstyle->size);
uint16 utf16_a = 0x41;
if(!string || string[0]=='\0') return 0;
if(!length) return 0;
if(rp == NULL) return 0;
if(utf8_to_enc(string,"UTF-16",length,(char **)&utf16) != NSERROR_OK) return 0;
outf16 = utf16;
if(!(ofont = ami_open_outline_font(fstyle, 0))) {
if(!(ofont = ami_open_outline_font(fstyle, &utf16_a))) return 0;
}
while(*utf16 != 0)
{
utf16charlen = amiga_nsfont_utf16_char_length(utf16);
utf16next = &utf16[utf16charlen];
if(fstyle->flags & FONTF_SMALLCAPS)
{
utf16charsc = (uint16 *)ami_font_translate_smallcaps(utf16);
utf16nextsc = (uint16 *)ami_font_translate_smallcaps(utf16next);
tempx = ami_font_plot_glyph(ofont, rp, utf16charsc, utf16nextsc,
dx + x, dy, emwidth, aa);
}
else tempx = 0;
if(tempx == 0) {
tempx = ami_font_plot_glyph(ofont, rp, utf16, utf16next,
dx + x, dy, emwidth, aa);
}
if(tempx == 0)
{
if(ufont == NULL)
{
ufont = ami_open_outline_font(fstyle, utf16);
}
if(ufont) {
tempx = ami_font_plot_glyph(ufont, rp, utf16, utf16next,
dx + x, dy, emwidth, aa);
}
}
x += tempx;
utf16 += utf16charlen;
}
free(outf16);
return x;
}
static inline ULONG ami_font_unicode_width(const char *string, ULONG length,
const plot_font_style_t *fstyle, ULONG dx, ULONG dy, bool aa)
{
uint16 *restrict utf16 = NULL, *restrict outf16 = NULL;
uint16 *restrict utf16charsc = 0, *restrict utf16nextsc = 0;
uint16 *restrict utf16next = 0;
int utf16charlen;
struct OutlineFont *restrict ofont, *restrict ufont = NULL;
uint32 x=0;
int32 tempx = 0;
ULONG emwidth = (ULONG)NSA_FONT_EMWIDTH(fstyle->size);
uint16 utf16_a = 0x41;
if(!string || string[0]=='\0') return 0;
if(!length) return 0;
if(utf8_to_enc(string,"UTF-16",length,(char **)&utf16) != NSERROR_OK) return 0;
outf16 = utf16;
if(!(ofont = ami_open_outline_font(fstyle, 0))) {
if(!(ofont = ami_open_outline_font(fstyle, &utf16_a))) return 0;
}
while(*utf16 != 0)
{
utf16charlen = amiga_nsfont_utf16_char_length(utf16);
utf16next = &utf16[utf16charlen];
if(fstyle->flags & FONTF_SMALLCAPS)
{
utf16charsc = (uint16 *)ami_font_translate_smallcaps(utf16);
utf16nextsc = (uint16 *)ami_font_translate_smallcaps(utf16next);
tempx = ami_font_width_glyph(ofont, utf16charsc, utf16nextsc, emwidth);
}
else tempx = 0;
if(tempx == 0) {
tempx = ami_font_width_glyph(ofont, utf16, utf16next, emwidth);
}
if(tempx == 0)
{
if(ufont == NULL)
{
ufont = ami_open_outline_font(fstyle, utf16);
}
if(ufont)
{
tempx = ami_font_width_glyph(ufont, utf16, utf16next, emwidth);
}
}
x += tempx;
utf16 += utf16charlen;
}
free(outf16);
return x;
}
void ami_font_bullet_close(void *nso)
{
struct ami_font_cache_node *node = (struct ami_font_cache_node *)nso;
CloseOutlineFont(node->font, &ami_diskfontlib_list);
}
const struct ami_font_functions ami_font_bullet_table = {
amiga_nsfont_width,
amiga_nsfont_position_in_string,
amiga_nsfont_split,
amiga_nsfont_text
};
void ami_font_bullet_init(void)
{
/* Initialise Unicode font scanner */
ami_font_initscanner(false, true);
/* Initialise font caching etc lists */
ami_font_cache_init();
/* List for diskfont internal cache */
NewList(&ami_diskfontlib_list);
/* Set up table */
ami_nsfont = &ami_font_bullet_table;
}
void ami_font_bullet_fini(void)
{
ami_font_cache_fini();
ami_font_finiscanner();
}
/* Font scanner */
void ami_font_initscanner(bool force, bool save)
{
ami_font_scan_init(nsoption_charp(font_unicode_file), force, save, glypharray);
}
void ami_font_finiscanner(void)
{
ami_font_scan_fini(glypharray);
}
void ami_font_savescanner(void)
{
ami_font_scan_save(nsoption_charp(font_unicode_file), glypharray);
}
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