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php-src/ext/gd/gdt1.c
Sebastian Bergmann 38933514e1 Update headers.
2001-12-11 15:32:16 +00:00

550 lines
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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2002 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Jouni Ahto <jah@mork.net> |
| |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#if 0 /* Moved currently back to gd.c */
#include "php.h"
#include "php_gd.h"
#if HAVE_LIBT1
void php_free_ps_font(int font_id)
{
T1_DeleteFont(font_id);
}
void php_free_ps_enc(char **enc)
{
T1_DeleteEncoding(enc);
}
/* {{{ proto int imagepsloadfont(string pathname)
Load a new font from specified file */
PHP_FUNCTION(imagepsloadfont)
{
zval **file;
int f_ind, l_ind;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &file) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string_ex(file);
f_ind = T1_AddFont(Z_STRVAL_PP(file));
if (f_ind < 0) {
switch (f_ind) {
case -1:
php_error(E_WARNING, "Couldn't find the font file");
RETURN_FALSE;
break;
case -2:
case -3:
php_error(E_WARNING, "Memory allocation fault in t1lib");
RETURN_FALSE;
break;
default:
php_error(E_WARNING, "An unknown error occurred in t1lib");
RETURN_FALSE;
break;
}
}
T1_LoadFont(f_ind);
/*
l_ind = zend_list_insert(f_ind, T1_GLOBAL(le_ps_font));
RETURN_LONG(l_ind);
*/
zend_list_addref(f_ind);
RETURN_LONG(f_ind);
}
/* }}} */
/* {{{ The function in t1lib which this function uses seem to be buggy...
proto int imagepscopyfont(int font_index)
Make a copy of a font for purposes like extending or reenconding */
/*
PHP_FUNCTION(imagepscopyfont)
{
pval *fnt;
int l_ind, type;
gd_ps_font *nf_ind, *of_ind;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters(ht, 1, &fnt) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long(fnt);
of_ind = zend_list_find(Z_LVAL_P(fnt), &type);
if (type != GD_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_P(fnt));
RETURN_FALSE;
}
nf_ind = emalloc(sizeof(gd_ps_font));
nf_ind->font_id = T1_CopyFont(of_ind->font_id);
if (nf_ind->font_id < 0) {
l_ind = nf_ind->font_id;
efree(nf_ind);
switch (l_ind) {
case -1:
php_error(E_WARNING, "FontID %d is not loaded in memory", l_ind);
RETURN_FALSE;
break;
case -2:
php_error(E_WARNING, "Tried to copy a logical font");
RETURN_FALSE;
break;
case -3:
php_error(E_WARNING, "Memory allocation fault in t1lib");
RETURN_FALSE;
break;
default:
php_error(E_WARNING, "An unknown error occurred in t1lib");
RETURN_FALSE;
break;
}
}
nf_ind->extend = 1;
l_ind = zend_list_insert(nf_ind, GD_GLOBAL(le_ps_font));
RETURN_LONG(l_ind);
}
*/
/* }}} */
/* {{{ proto bool imagepsfreefont(int font_index)
Free memory used by a font */
PHP_FUNCTION(imagepsfreefont)
{
zval **fnt;
int type;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &fnt) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(fnt);
zend_list_find(Z_LVAL_PP(fnt), &type);
if (type != T1_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_PP(fnt));
RETURN_FALSE;
}
zend_list_delete(Z_LVAL_PP(fnt));
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool imagepsencodefont(int font_index, string filename)
To change a fonts character encoding vector */
PHP_FUNCTION(imagepsencodefont)
{
zval **fnt, **enc;
char **enc_vector;
int type;
int f_ind;
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &fnt, &enc) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(fnt);
convert_to_string_ex(enc);
f_ind = zend_list_find(Z_LVAL_PP(fnt), &type);
if (type != T1_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_PP(fnt));
RETURN_FALSE;
}
if ((enc_vector = T1_LoadEncoding(Z_STRVAL_PP(enc))) == NULL) {
php_error(E_WARNING, "Couldn't load encoding vector from %s", Z_STRVAL_PP(enc));
RETURN_FALSE;
}
T1_DeleteAllSizes(f_ind);
if (T1_ReencodeFont(f_ind, enc_vector)) {
T1_DeleteEncoding(enc_vector);
php_error(E_WARNING, "Couldn't reencode font");
RETURN_FALSE;
}
zend_list_insert(enc_vector, T1_GLOBAL(le_ps_enc));
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool imagepsextendfont(int font_index, float extend)
Extend or or condense (if extend < 1) a font */
PHP_FUNCTION(imagepsextendfont)
{
zval **fnt, **ext;
int type;
int f_ind;
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &fnt, &ext) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(fnt);
convert_to_double_ex(ext);
f_ind = zend_list_find(Z_LVAL_PP(fnt), &type);
if (type != T1_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_PP(fnt));
RETURN_FALSE;
}
if (T1_ExtendFont(f_ind, Z_DVAL_PP(ext)) != 0) RETURN_FALSE;
/*
f_ind->extend = Z_DVAL_P(ext);
*/
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool imagepsslantfont(int font_index, float slant)
Slant a font */
PHP_FUNCTION(imagepsslantfont)
{
zval **fnt, **slt;
int type;
int f_ind;
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &fnt, &slt) == FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_long_ex(fnt);
convert_to_double_ex(slt);
f_ind = zend_list_find(Z_LVAL_PP(fnt), &type);
if (type != T1_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_PP(fnt));
RETURN_FALSE;
}
if (T1_SlantFont(f_ind, Z_DVAL_PP(slt)) != 0) RETURN_FALSE;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto array imagepstext(int image, string text, int font, int size, int xcoord, int ycoord [, int space, int tightness, float angle, int antialias])
Rasterize a string over an image */
PHP_FUNCTION(imagepstext)
{
zval **img, **str, **fnt, **sz, **fg, **bg, **sp, **px, **py, **aas, **wd, **ang;
int i, j, x, y;
int space, type;
int f_ind;
int h_lines, v_lines, c_ind;
int rd, gr, bl, fg_rd, fg_gr, fg_bl, bg_rd, bg_gr, bg_bl;
int aa[16], aa_steps;
int width, amount_kern, add_width;
double angle;
unsigned long aa_greys[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
gdImagePtr bg_img;
GLYPH *str_img;
T1_OUTLINE *char_path, *str_path;
T1_TMATRIX *transform = NULL;
switch(ZEND_NUM_ARGS()) {
case 8:
if (zend_get_parameters_ex(8, &img, &str, &fnt, &sz, &fg, &bg, &px, &py) == FAILURE) {
RETURN_FALSE;
}
convert_to_string_ex(str);
convert_to_long_ex(fnt);
convert_to_long_ex(sz);
convert_to_long_ex(fg);
convert_to_long_ex(bg);
convert_to_long_ex(px);
convert_to_long_ex(py);
x = Z_LVAL_PP(px);
y = Z_LVAL_PP(py);
space = 0;
aa_steps = 4;
width = 0;
angle = 0;
break;
case 12:
if (zend_get_parameters_ex(12, &img, &str, &fnt, &sz, &fg, &bg, &px, &py, &sp, &wd, &ang, &aas) == FAILURE) {
RETURN_FALSE;
}
convert_to_string_ex(str);
convert_to_long_ex(fnt);
convert_to_long_ex(sz);
convert_to_long_ex(sp);
convert_to_long_ex(fg);
convert_to_long_ex(bg);
convert_to_long_ex(px);
convert_to_long_ex(py);
x = Z_LVAL_PP(px);
y = Z_LVAL_PP(py);
convert_to_long_ex(sp);
space = Z_LVAL_PP(sp);
convert_to_long_ex(aas);
aa_steps = Z_LVAL_PP(aas);
convert_to_long_ex(wd);
width = Z_LVAL_PP(wd);
convert_to_double_ex(ang);
angle = Z_DVAL_PP(ang);
break;
default:
WRONG_PARAM_COUNT;
}
bg_img = zend_list_find(Z_LVAL_PP(img), &type);
if (!bg_img || type != GD_GLOBAL(le_gd)) {
php_error(E_WARNING, "Unable to find image pointer");
RETURN_FALSE;
}
f_ind = zend_list_find(Z_LVAL_P(fnt), &type);
if (!f_ind || type != GD_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_P(fnt));
RETURN_FALSE;
}
fg_rd = gdImageRed(bg_img, Z_LVAL_P(fg));
fg_gr = gdImageGreen(bg_img, Z_LVAL_P(fg));
fg_bl = gdImageBlue(bg_img, Z_LVAL_P(fg));
bg_rd = gdImageRed(bg_img, Z_LVAL_P(bg));
bg_gr = gdImageGreen(bg_img, Z_LVAL_P(bg));
bg_bl = gdImageBlue(bg_img, Z_LVAL_P(bg));
for (i = 0; i < aa_steps; i++) {
rd = bg_rd+(double)(fg_rd-bg_rd)/aa_steps*(i+1);
gr = bg_gr+(double)(fg_gr-bg_gr)/aa_steps*(i+1);
bl = bg_bl+(double)(fg_bl-bg_bl)/aa_steps*(i+1);
aa[i] = gdImageColorResolve(bg_img, rd, gr, bl);
}
T1_AASetBitsPerPixel(8);
switch (aa_steps) {
case 4:
T1_AASetGrayValues(0, 1, 2, 3, 4);
T1_AASetLevel(T1_AA_LOW);
break;
case 16:
T1_AAHSetGrayValues(aa_greys);
T1_AASetLevel(T1_AA_HIGH);
break;
default:
php_error(E_WARNING, "Invalid value %d as number of steps for antialiasing", aa_steps);
RETURN_FALSE;
}
if (angle) {
transform = T1_RotateMatrix(NULL, angle);
}
if (width) {
#ifdef HAVE_LIBT1_OUTLINE
str_path = T1_GetCharOutline(f_ind->font_id, Z_STRVAL_P(str)[0], Z_LVAL_P(sz), transform);
for (i = 1; i < Z_STRLEN_P(str); i++) {
amount_kern = (int) T1_GetKerning(f_ind->font_id, Z_STRVAL_P(str)[i-1], Z_STRVAL_P(str)[i]);
amount_kern += Z_STRVAL_P(str)[i-1] == ' ' ? space : 0;
add_width = (int) (amount_kern+width)/f_ind->extend;
char_path = T1_GetMoveOutline(f_ind->font_id, add_width, 0, 0, Z_LVAL_P(sz), transform);
str_path = T1_ConcatOutlines(str_path, char_path);
char_path = T1_GetCharOutline(f_ind->font_id, Z_STRVAL_P(str)[i], Z_LVAL_P(sz), transform);
str_path = T1_ConcatOutlines(str_path, char_path);
}
str_img = T1_AAFillOutline(str_path, 0);
#else
php_error(E_WARNING, "Setting space between characters in function ImagePSText is supported only with t1lib version 0.9 or above");
RETURN_FALSE;
#endif
} else {
str_img = T1_AASetString(f_ind->font_id, Z_STRVAL_P(str), Z_STRLEN_P(str),
space, T1_KERNING, Z_LVAL_P(sz), transform);
}
if (T1_errno) RETURN_FALSE;
h_lines = str_img->metrics.ascent - str_img->metrics.descent;
v_lines = str_img->metrics.rightSideBearing - str_img->metrics.leftSideBearing;
for (i = 0; i < v_lines; i++) {
for (j = 0; j < h_lines; j++) {
switch (str_img->bits[j*v_lines+i]) {
case 0:
break;
default:
c_ind = aa[str_img->bits[j*v_lines+i]-1];
gdImageSetPixel(bg_img, x+str_img->metrics.leftSideBearing+i, y-str_img->metrics.ascent+j, c_ind);
}
}
}
if (array_init(return_value) == FAILURE) {
RETURN_FALSE;
}
add_next_index_long(return_value, str_img->metrics.leftSideBearing);
add_next_index_long(return_value, str_img->metrics.descent);
add_next_index_long(return_value, str_img->metrics.rightSideBearing);
add_next_index_long(return_value, str_img->metrics.ascent);
}
/* }}} */
/* {{{ proto array imagepsbbox(string text, int font, int size [, int space, int tightness, int angle])
Return the bounding box needed by a string if rasterized */
PHP_FUNCTION(imagepsbbox)
{
pval *str, *fnt, *sz, *sp, *wd, *ang;
int i, space, add_width, char_width, amount_kern, type;
int cur_x, cur_y, dx, dy;
int x1, y1, x2, y2, x3, y3, x4, y4;
gd_ps_font *f_ind;
int per_char = 0;
double angle, sin_a, cos_a;
BBox char_bbox, str_bbox = {0, 0, 0, 0};
switch(ZEND_NUM_ARGS()) {
case 3:
if (zend_get_parameters(ht, 3, &str, &fnt, &sz) == FAILURE) {
RETURN_FALSE;
}
convert_to_string(str);
convert_to_long(fnt);
convert_to_long(sz);
space = 0;
break;
case 6:
if (zend_get_parameters(ht, 6, &str, &fnt, &sz, &sp, &wd, &ang) == FAILURE) {
RETURN_FALSE;
}
convert_to_string(str);
convert_to_long(fnt);
convert_to_long(sz);
convert_to_long(sp);
space = Z_LVAL_P(sp);
convert_to_long(wd);
add_width = Z_LVAL_P(wd);
convert_to_double(ang);
angle = Z_DVAL_P(ang) * M_PI / 180;
sin_a = sin(angle);
cos_a = cos(angle);
per_char = add_width || angle ? 1 : 0;
break;
default:
WRONG_PARAM_COUNT;
}
f_ind = zend_list_find(Z_LVAL_P(fnt), &type);
if (type != GD_GLOBAL(le_ps_font)) {
php_error(E_WARNING, "%d is not a Type 1 font index", Z_LVAL_P(fnt));
RETURN_FALSE;
}
#define max(a, b) (a > b ? a : b)
#define min(a, b) (a < b ? a : b)
#define new_x(a, b) (int) ((a) * cos_a - (b) * sin_a)
#define new_y(a, b) (int) ((a) * sin_a + (b) * cos_a)
if (per_char) {
space += T1_GetCharWidth(f_ind->font_id, ' ');
cur_x = cur_y = 0;
for (i = 0; i < Z_STRLEN_P(str); i++) {
if (Z_STRVAL_P(str)[i] == ' ') {
char_bbox.llx = char_bbox.lly = char_bbox.ury = 0;
char_bbox.urx = char_width = space;
} else {
char_bbox = T1_GetCharBBox(f_ind->font_id, Z_STRVAL_P(str)[i]);
char_width = T1_GetCharWidth(f_ind->font_id, Z_STRVAL_P(str)[i]);
}
amount_kern = i ? T1_GetKerning(f_ind->font_id, Z_STRVAL_P(str)[i-1], Z_STRVAL_P(str)[i]) : 0;
/* Transfer character bounding box to right place */
x1 = new_x(char_bbox.llx, char_bbox.lly) + cur_x;
y1 = new_y(char_bbox.llx, char_bbox.lly) + cur_y;
x2 = new_x(char_bbox.llx, char_bbox.ury) + cur_x;
y2 = new_y(char_bbox.llx, char_bbox.ury) + cur_y;
x3 = new_x(char_bbox.urx, char_bbox.ury) + cur_x;
y3 = new_y(char_bbox.urx, char_bbox.ury) + cur_y;
x4 = new_x(char_bbox.urx, char_bbox.lly) + cur_x;
y4 = new_y(char_bbox.urx, char_bbox.lly) + cur_y;
/* Find min & max values and compare them with current bounding box */
str_bbox.llx = min(str_bbox.llx, min(x1, min(x2, min(x3, x4))));
str_bbox.lly = min(str_bbox.lly, min(y1, min(y2, min(y3, y4))));
str_bbox.urx = max(str_bbox.urx, max(x1, max(x2, max(x3, x4))));
str_bbox.ury = max(str_bbox.ury, max(y1, max(y2, max(y3, y4))));
/* Move to the next base point */
dx = new_x(char_width + add_width + amount_kern, 0);
dy = new_y(char_width + add_width + amount_kern, 0);
cur_x += dx;
cur_y += dy;
/*
printf("%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n", x1, y1, x2, y2, x3, y3, x4, y4, char_bbox.llx, char_bbox.lly, char_bbox.urx, char_bbox.ury, char_width, amount_kern, cur_x, cur_y, dx, dy);
*/
}
} else {
str_bbox = T1_GetStringBBox(f_ind->font_id, Z_STRVAL_P(str), Z_STRLEN_P(str), space, T1_KERNING);
}
if (T1_errno) RETURN_FALSE;
if (array_init(return_value) == FAILURE) {
RETURN_FALSE;
}
/*
printf("%d %d %d %d\n", str_bbox.llx, str_bbox.lly, str_bbox.urx, str_bbox.ury);
*/
add_next_index_long(return_value, (int) ceil(((double) str_bbox.llx)*Z_LVAL_P(sz)/1000));
add_next_index_long(return_value, (int) ceil(((double) str_bbox.lly)*Z_LVAL_P(sz)/1000));
add_next_index_long(return_value, (int) ceil(((double) str_bbox.urx)*Z_LVAL_P(sz)/1000));
add_next_index_long(return_value, (int) ceil(((double) str_bbox.ury)*Z_LVAL_P(sz)/1000));
}
/* }}} */
#endif /* HAVE_LIBT1 */
#endif /* 0 */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
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