static void image_to_lua(lua_State * L, image * a)
{ /* key user ... */
int i, j;
image_dict *d = img_dict(a);
assert(d != NULL);
lua_pushstring(L, IMG_ENV); /* s k u ... */
lua_gettable(L, LUA_REGISTRYINDEX); /* t k u ... */
lua_pushvalue(L, -2); /* k t k u ... */
lua_gettable(L, -2); /* i? t k u ... */
if (!lua_isnumber(L, -1)) /* !i t k u ... */
luaL_error(L, "image_to_lua(): %s is not a valid image key",
lua_tostring(L, -3));
i = (int) lua_tointeger(L, -1); /* i t k u ... */
lua_pop(L, 3); /* u ... */
switch (i) {
case P_WIDTH:
if (is_wd_running(a))
lua_pushnil(L);
else
lua_pushinteger(L, img_width(a));
break;
case P_HEIGHT:
if (is_ht_running(a))
lua_pushnil(L);
else
lua_pushinteger(L, img_height(a));
break;
case P_DEPTH:
if (is_dp_running(a))
lua_pushnil(L);
else
lua_pushinteger(L, img_depth(a));
break;
case P_TRANSFORM:
lua_pushinteger(L, img_transform(a));
break;
/* now follow all image_dict entries */
case P_FILENAME:
if (img_filename(d) == NULL || strlen(img_filename(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_filename(d));
break;
case P_VISIBLEFILENAME:
if (img_visiblefilename(d) == NULL
|| strlen(img_visiblefilename(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_visiblefilename(d));
break;
case P_FILEPATH:
if (img_filepath(d) == NULL || strlen(img_filepath(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_filepath(d));
break;
case P_ATTR:
if (img_attr(d) == NULL || strlen(img_attr(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_attr(d));
break;
case P_PAGE:
if (img_pagename(d) != NULL && strlen(img_pagename(d)) != 0)
lua_pushstring(L, img_pagename(d));
else
lua_pushinteger(L, img_pagenum(d));
break;
case P_TOTALPAGES:
lua_pushinteger(L, img_totalpages(d));
break;
case P_XSIZE: /* Modify by /Rotate only for output */
if ((img_rotation(d) & 1) == 0)
lua_pushinteger(L, img_xsize(d));
else
lua_pushinteger(L, img_ysize(d));
break;
case P_YSIZE: /* Modify by /Rotate only for output */
if ((img_rotation(d) & 1) == 0)
lua_pushinteger(L, img_ysize(d));
else
lua_pushinteger(L, img_xsize(d));
break;
case P_XRES:
lua_pushinteger(L, img_xres(d));
break;
case P_YRES:
lua_pushinteger(L, img_yres(d));
break;
case P_ROTATION:
lua_pushinteger(L, img_rotation(d));
break;
case P_COLORSPACE:
if (img_colorspace(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_colorspace(d));
break;
case P_COLORDEPTH:
if (img_colordepth(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_colordepth(d));
break;
case P_IMAGETYPE:
j = img_type(d);
if (j >= 0 && j <= imgtype_max) {
if (j == IMG_TYPE_NONE)
lua_pushnil(L);
else
lua_pushstring(L, imgtype_s[j]);
} else
assert(0);
break;
case P_PAGEBOX:
j = img_pagebox(d);
if (j >= 0 && j <= pagebox_max) {
if (j == PDF_BOX_SPEC_NONE)
lua_pushnil(L);
else
lua_pushstring(L, pdfboxspec_s[j]);
} else
assert(0);
break;
case P_BBOX:
if (!img_is_bbox(d)) {
img_bbox(d)[0] = img_xorig(d);
img_bbox(d)[1] = img_yorig(d);
img_bbox(d)[2] = img_xorig(d) + img_xsize(d);
img_bbox(d)[3] = img_yorig(d) + img_ysize(d);
}
lua_newtable(L);
lua_pushinteger(L, 1);
lua_pushinteger(L, img_bbox(d)[0]);
lua_settable(L, -3);
lua_pushinteger(L, 2);
lua_pushinteger(L, img_bbox(d)[1]);
lua_settable(L, -3);
lua_pushinteger(L, 3);
lua_pushinteger(L, img_bbox(d)[2]);
lua_settable(L, -3);
lua_pushinteger(L, 4);
lua_pushinteger(L, img_bbox(d)[3]);
lua_settable(L, -3);
break;
case P_OBJNUM:
if (img_objnum(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_objnum(d));
break;
case P_INDEX:
if (img_index(d) == 0)
lua_pushnil(L);
else
lua_pushinteger(L, img_index(d));
break;
case P_STREAM:
if (img_type(d) != IMG_TYPE_PDFSTREAM || img_pdfstream_ptr(d) == NULL
|| img_pdfstream_stream(d) == NULL
|| strlen(img_pdfstream_stream(d)) == 0)
lua_pushnil(L);
else
lua_pushstring(L, img_pdfstream_stream(d));
break;
default:
assert(0);
} /* v u ... */
}
void place_img(PDF pdf, image_dict * idict, scaled_whd dim, int transform)
{
/*tex A transformation matrix: */
double a[6];
double xoff, yoff, tmp;
pdfstructure *p = pdf->pstruct;
scaledpos pos = pdf->posstruct->pos;
/*tex The number of digits after the decimal point: */
int r;
int k;
scaledpos tmppos;
pdffloat cm[6];
int groupref;
a[0] = a[3] = 1.0e6;
a[1] = a[2] = 0;
if (img_type(idict) == IMG_TYPE_PDF || img_type(idict) == IMG_TYPE_PDFMEMSTREAM
|| img_type(idict) == IMG_TYPE_PDFSTREAM) {
a[0] /= (double) img_xsize(idict);
a[3] /= (double) img_ysize(idict);
xoff = (double) img_xorig(idict) / (double) img_xsize(idict);
yoff = (double) img_yorig(idict) / (double) img_ysize(idict);
r = 6;
} else {
if (img_type(idict) == IMG_TYPE_PNG) {
groupref = img_group_ref(idict);
if ((groupref > 0) && (pdf->img_page_group_val == 0))
pdf->img_page_group_val = groupref;
}
a[0] /= (double) one_hundred_bp;
a[3] = a[0];
xoff = yoff = 0;
r = 4;
}
if ((transform & 7) > 3) {
/*tex Mirror cases: */
a[0] *= -1;
xoff *= -1;
}
switch ((transform + img_rotation(idict)) & 3) {
case 0:
/*tex No transform. */
break;
case 1:
/*tex rotation over 90 degrees (counterclockwise) */
a[1] = a[0];
a[2] = -a[3];
a[3] = a[0] = 0;
tmp = yoff;
yoff = xoff;
xoff = -tmp;
break;
case 2:
/*tex rotation over 180 degrees (counterclockwise) */
a[0] *= -1;
a[3] *= -1;
xoff *= -1;
yoff *= -1;
break;
case 3:
/*tex rotation over 270 degrees (counterclockwise) */
a[1] = -a[0];
a[2] = a[3];
a[3] = a[0] = 0;
tmp = yoff;
yoff = -xoff;
xoff = tmp;
break;
default:;
}
xoff *= (double) dim.wd;
yoff *= (double) (dim.ht + dim.dp);
a[0] *= (double) dim.wd;
a[1] *= (double) (dim.ht + dim.dp);
a[2] *= (double) dim.wd;
a[3] *= (double) (dim.ht + dim.dp);
a[4] = (double) pos.h - xoff;
a[5] = (double) pos.v - yoff;
k = transform + img_rotation(idict);
if ((transform & 7) > 3)
k++;
switch (k & 3) {
case 0:
/*tex No transform */
break;
case 1:
/*tex rotation over 90 degrees (counterclockwise) */
a[4] += (double) dim.wd;
break;
case 2:
/*tex rotation over 180 degrees (counterclockwise) */
a[4] += (double) dim.wd;
a[5] += (double) (dim.ht + dim.dp);
break;
case 3:
/*tex rotation over 270 degrees (counterclockwise) */
a[5] += (double) (dim.ht + dim.dp);
break;
default:;
}
setpdffloat(cm[0], i64round(a[0]), r);
setpdffloat(cm[1], i64round(a[1]), r);
setpdffloat(cm[2], i64round(a[2]), r);
setpdffloat(cm[3], i64round(a[3]), r);
tmppos.h = round(a[4]);
tmppos.v = round(a[5]);
pdf_goto_pagemode(pdf);
(void) calc_pdfpos(p, tmppos);
cm[4] = p->cm[4];
cm[5] = p->cm[5];
if (pdf->img_page_group_val == 0)
pdf->img_page_group_val = img_group_ref(idict);
pdf_puts(pdf, "q\n");
pdf_print_cm(pdf, cm);
pdf_puts(pdf, "/Im");
pdf_print_int(pdf, img_index(idict));
pdf_print_resname_prefix(pdf);
pdf_puts(pdf, " Do\nQ\n");
addto_page_resources(pdf, obj_type_ximage, img_objnum(idict));
if (img_state(idict) < DICT_OUTIMG)
img_state(idict) = DICT_OUTIMG;
}
static int m_img_get(lua_State * L)
{
int j;
const char *s;
image **a = (image **) luaL_checkudata(L, 1, TYPE_IMG); /* k u */
image_dict *d = img_dict(*a);
if (d == NULL) {
luaL_error(L, "invalid image dictionary");
}
s = lua_tostring(L, 2);
if (lua_key_eq(s,width)) {
if (is_wd_running(*a)) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_width(*a));
}
} else if (lua_key_eq(s,height)) {
if (is_ht_running(*a)) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_height(*a));
}
} else if (lua_key_eq(s,depth)) {
if (is_dp_running(*a)) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_depth(*a));
}
} else if (lua_key_eq(s,transform)) {
lua_pushinteger(L, img_transform(*a));
} else if (lua_key_eq(s,filename)) {
if (img_filename(d) == NULL || strlen(img_filename(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_filename(d));
}
} else if (lua_key_eq(s,visiblefilename)) {
if (img_visiblefilename(d) == NULL || strlen(img_visiblefilename(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_visiblefilename(d));
}
} else if (lua_key_eq(s,keepopen)) {
lua_pushboolean(L, img_keepopen(d));
} else if (lua_key_eq(s,filepath)) {
if (img_filepath(d) == NULL || strlen(img_filepath(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_filepath(d));
}
} else if (lua_key_eq(s,attr)) {
if (img_attr(d) == NULL || strlen(img_attr(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_attr(d));
}
} else if (lua_key_eq(s,page)) {
if (img_pagename(d) != NULL && strlen(img_pagename(d)) != 0) {
lua_pushstring(L, img_pagename(d));
} else {
lua_pushinteger(L, img_pagenum(d));
}
} else if (lua_key_eq(s,pages)) {
lua_pushinteger(L, img_totalpages(d));
} else if (lua_key_eq(s,xsize)) {
if ((img_rotation(d) & 1) == 0) {
lua_pushinteger(L, img_xsize(d));
} else {
lua_pushinteger(L, img_ysize(d));
}
} else if (lua_key_eq(s,ysize)) {
if ((img_rotation(d) & 1) == 0) {
lua_pushinteger(L, img_ysize(d));
} else {
lua_pushinteger(L, img_xsize(d));
}
} else if (lua_key_eq(s,xres)) {
lua_pushinteger(L, img_xres(d));
} else if (lua_key_eq(s,yres)) {
lua_pushinteger(L, img_yres(d));
} else if (lua_key_eq(s,rotation)) {
lua_pushinteger(L, img_rotation(d));
} else if (lua_key_eq(s,colorspace)) {
if (img_colorspace(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_colorspace(d));
}
} else if (lua_key_eq(s,colordepth)) {
if (img_colordepth(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_colordepth(d));
}
} else if (lua_key_eq(s,imagetype)) {
j = img_type(d);
if (j >= 0 && j <= img_types_max) {
if (j == IMG_TYPE_NONE) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_types[j]);
}
} else {
lua_pushnil(L);
}
} else if (lua_key_eq(s,pagebox)) {
j = img_pagebox(d);
if (j < 0 || j >= img_pageboxes_max) {
j = 0;
}
lua_push_img_pagebox(L, j);
} else if (lua_key_eq(s,bbox)) {
if (!img_is_bbox(d)) {
img_bbox(d)[0] = img_xorig(d);
img_bbox(d)[1] = img_yorig(d);
img_bbox(d)[2] = img_xorig(d) + img_xsize(d);
img_bbox(d)[3] = img_yorig(d) + img_ysize(d);
}
lua_newtable(L);
lua_pushinteger(L, 1);
lua_pushinteger(L, img_bbox(d)[0]);
lua_settable(L, -3);
lua_pushinteger(L, 2);
lua_pushinteger(L, img_bbox(d)[1]);
lua_settable(L, -3);
lua_pushinteger(L, 3);
lua_pushinteger(L, img_bbox(d)[2]);
lua_settable(L, -3);
lua_pushinteger(L, 4);
lua_pushinteger(L, img_bbox(d)[3]);
lua_settable(L, -3);
} else if (lua_key_eq(s,objnum)) {
if (img_objnum(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_objnum(d));
}
} else if (lua_key_eq(s,index)) {
if (img_index(d) == 0) {
lua_pushnil(L);
} else {
lua_pushinteger(L, img_index(d));
}
} else if (lua_key_eq(s,stream)) {
if (img_type(d) != IMG_TYPE_PDFSTREAM
|| img_pdfstream_ptr(d) == NULL
|| img_pdfstream_stream(d) == NULL
|| strlen(img_pdfstream_stream(d)) == 0) {
lua_pushnil(L);
} else {
lua_pushstring(L, img_pdfstream_stream(d));
}
} else if (lua_key_eq(s,ref_count)) {
lua_pushinteger(L, img_luaref(d));
} else {
lua_pushnil(L);
}
return 1;
}
scaled_whd scale_img(image_dict * idict, scaled_whd alt_rule, int transform)
{
/*tex size and resolution of image */
int x, y, xr, yr, tmp;
/*tex natural size corresponding to image resolution */
scaled_whd nat;
int default_res;
nat.dp = 0;
nat.wd = 0;
nat.ht = 0;
if (img_nobbox(idict)) {
if (img_is_bbox(idict)) {
x = img_xsize(idict) = img_bbox(idict)[2] - img_bbox(idict)[0];
y = img_ysize(idict) = img_bbox(idict)[3] - img_bbox(idict)[1];
img_xorig(idict) = img_bbox(idict)[0];
img_yorig(idict) = img_bbox(idict)[1];
nat.wd = x;
nat.ht = y;
} else {
normal_error("pdf backend","use boundingbox to pass dimensions");
}
} else {
if ((img_type(idict) == IMG_TYPE_PDF || img_type(idict) == IMG_TYPE_PDFMEMSTREAM
|| img_type(idict) == IMG_TYPE_PDFSTREAM) && img_is_bbox(idict)) {
/*tex dimensions from image.bbox */
x = img_xsize(idict) = img_bbox(idict)[2] - img_bbox(idict)[0];
y = img_ysize(idict) = img_bbox(idict)[3] - img_bbox(idict)[1];
img_xorig(idict) = img_bbox(idict)[0];
img_yorig(idict) = img_bbox(idict)[1];
} else {
/*tex dimensions, resolutions from image file */
x = img_xsize(idict);
y = img_ysize(idict);
}
xr = img_xres(idict);
yr = img_yres(idict);
if (x <= 0 || y <= 0 || xr < 0 || yr < 0)
normal_error("pdf backend","invalid image dimensions");
if (xr > 65535 || yr > 65535) {
xr = 0;
yr = 0;
normal_warning("pdf backend","too large image resolution ignored");
}
if (((transform - img_rotation(idict)) & 1) == 1) {
tmp = x;
x = y;
y = tmp;
tmp = xr;
xr = yr;
yr = tmp;
}
/*tex always for images */
if (img_type(idict) == IMG_TYPE_PDF || img_type(idict) == IMG_TYPE_PDFMEMSTREAM
|| img_type(idict) == IMG_TYPE_PDFSTREAM) {
nat.wd = x;
nat.ht = y;
} else {
default_res = fix_int(pdf_image_resolution, 0, 65535);
if (default_res > 0 && (xr == 0 || yr == 0)) {
xr = default_res;
yr = default_res;
}
if (xr > 0 && yr > 0) {
nat.wd = ext_xn_over_d(one_hundred_inch, x, 100 * xr);
nat.ht = ext_xn_over_d(one_hundred_inch, y, 100 * yr);
} else {
nat.wd = ext_xn_over_d(one_hundred_inch, x, 7200);
nat.ht = ext_xn_over_d(one_hundred_inch, y, 7200);
}
}
}
return tex_scale(nat, alt_rule);
}
