void write_pdfstream(PDF pdf, image_dict * idict)
{
pdf_begin_obj(pdf, img_objnum(idict), OBJSTM_NEVER);
pdf_begin_dict(pdf);
if (!img_notype(idict)) {
pdf_dict_add_name(pdf, "Type", "XObject");
pdf_dict_add_name(pdf, "Subtype", "Form");
pdf_dict_add_int(pdf, "FormType", 1);
}
if (!img_nobbox(idict)) {
pdf_add_name(pdf, "BBox");
pdf_begin_array(pdf);
pdf_add_real(pdf, sp2bp(img_bbox(idict)[0]));
pdf_add_real(pdf, sp2bp(img_bbox(idict)[1]));
pdf_add_real(pdf, sp2bp(img_bbox(idict)[2]));
pdf_add_real(pdf, sp2bp(img_bbox(idict)[3]));
pdf_end_array(pdf);
}
if (img_attr(idict) != NULL && strlen(img_attr(idict)) > 0) {
pdf_printf(pdf, "\n%s\n", img_attr(idict));
}
if (!img_nolength(idict)) {
pdf_dict_add_streaminfo(pdf);
}
pdf_end_dict(pdf);
pdf_begin_stream(pdf);
if (img_pdfstream_stream(idict) != NULL) {
pdf_out_block(pdf, (const char *) img_pdfstream_stream(idict), img_pdfstream_size(idict));
}
pdf_end_stream(pdf);
pdf_end_obj(pdf);
}
static void lua_to_image(lua_State * L, image * a)
{ /* value key table ... */
int i;
image_dict *d = img_dict(a);
assert(d != NULL);
lua_pushstring(L, IMG_ENV); /* s v k t ... */
lua_gettable(L, LUA_REGISTRYINDEX); /* t v k t ... */
lua_pushvalue(L, -3); /* k t v k t ... */
lua_gettable(L, -2); /* i? t v k t ... */
if (!lua_isnumber(L, -1)) /* !i t v k t ... */
luaL_error(L, "lua_to_image(): %s is not a valid image key",
lua_tostring(L, -4));
i = (int) lua_tointeger(L, -1); /* i t v k t ... */
lua_pop(L, 2); /* v k t ... */
switch (i) {
case P_WIDTH:
if (lua_isnil(L, -1))
set_wd_running(a);
else if (lua_type(L, -1) == LUA_TNUMBER)
img_width(a) = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_width(a) = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.width needs integer or nil value or dimension string");
break;
case P_HEIGHT:
if (lua_isnil(L, -1))
set_ht_running(a);
else if (lua_type(L, -1) == LUA_TNUMBER)
img_height(a) = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_height(a) = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.height needs integer or nil value or dimension string");
break;
case P_DEPTH:
if (lua_isnil(L, -1))
set_dp_running(a);
else if (lua_type(L, -1) == LUA_TNUMBER)
img_depth(a) = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_depth(a) = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.depth needs integer or nil value or dimension string");
break;
case P_TRANSFORM:
if (lua_isnumber(L, -1))
img_transform(a) = (int) lua_tointeger(L, -1);
else
luaL_error(L, "image.transform needs integer value");
break;
/* now follow all image_dict entries */
case P_FILENAME:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.filename is now read-only");
if (img_type(d) == IMG_TYPE_PDFSTREAM)
luaL_error(L, "image.filename can't be used with image.stream");
if (lua_isstring(L, -1)) {
xfree(img_filename(d));
img_filename(d) = xstrdup(lua_tostring(L, -1));
} else
luaL_error(L, "image.filename needs string value");
break;
case P_VISIBLEFILENAME:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.visiblefilename is now read-only");
if (img_type(d) == IMG_TYPE_PDFSTREAM)
luaL_error(L,
"image.visiblefilename can't be used with image.stream");
if (lua_isstring(L, -1)) {
xfree(img_visiblefilename(d));
img_visiblefilename(d) = xstrdup(lua_tostring(L, -1));
} else
luaL_error(L, "image.visiblefilename needs string value");
break;
case P_ATTR:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.attr is now read-only");
if (lua_isstring(L, -1) || lua_isnil(L, -1)) {
xfree(img_attr(d));
if (lua_isstring(L, -1))
img_attr(d) = xstrdup(lua_tostring(L, -1));
} else
luaL_error(L, "image.attr needs string or nil value");
break;
case P_PAGE:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.page is now read-only");
if (lua_type(L, -1) == LUA_TSTRING) {
xfree(img_pagename(d));
img_pagename(d) = xstrdup(lua_tostring(L, -1));
img_pagenum(d) = 0;
} else if (lua_type(L, -1) == LUA_TNUMBER) {
img_pagenum(d) = (int) lua_tointeger(L, -1);
xfree(img_pagename(d));
} else
luaL_error(L, "image.page needs integer or string value");
break;
case P_COLORSPACE:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.colorspace is now read-only");
if (lua_isnil(L, -1))
img_colorspace(d) = 0;
else if (lua_isnumber(L, -1))
img_colorspace(d) = (int) lua_tointeger(L, -1);
else
luaL_error(L, "image.colorspace needs integer or nil value");
break;
case P_PAGEBOX:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.pagebox is now read-only");
if (lua_isnil(L, -1))
img_pagebox(d) = PDF_BOX_SPEC_NONE;
else if (lua_isstring(L, -1))
img_pagebox(d) = luaL_checkoption(L, -1, "none", pdfboxspec_s);
else
luaL_error(L, "image.pagebox needs string or nil value");
break;
case P_BBOX:
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.bbox is now read-only");
if (!lua_istable(L, -1))
luaL_error(L, "image.bbox needs table value");
if (lua_objlen(L, -1) != 4)
luaL_error(L, "image.bbox table must have exactly 4 elements");
for (i = 1; i <= 4; i++) { /* v k t ... */
lua_pushinteger(L, i); /* idx v k t ... */
lua_gettable(L, -2); /* int v k t ... */
if (lua_type(L, -1) == LUA_TNUMBER)
img_bbox(d)[i - 1] = (int) lua_tointeger(L, -1);
else if (lua_type(L, -1) == LUA_TSTRING)
img_bbox(d)[i - 1] = dimen_to_number(L, lua_tostring(L, -1));
else
luaL_error(L,
"image.bbox table needs integer value or dimension string elements");
lua_pop(L, 1); /* v k t ... */
}
img_set_bbox(d);
break;
case P_STREAM:
if (img_filename(d) != NULL)
luaL_error(L, "image.stream can't be used with image.filename");
if (img_state(d) >= DICT_FILESCANNED)
luaL_error(L, "image.stream is now read-only");
if (img_pdfstream_ptr(d) == NULL)
new_img_pdfstream_struct(d);
xfree(img_pdfstream_stream(d));
img_pdfstream_stream(d) = xstrdup(lua_tostring(L, -1));
img_type(d) = IMG_TYPE_PDFSTREAM;
break;
case P_FILEPATH:
case P_TOTALPAGES:
case P_XSIZE:
case P_YSIZE:
case P_XRES:
case P_YRES:
case P_ROTATION:
case P_IMAGETYPE:
case P_OBJNUM:
case P_INDEX:
case P_COLORDEPTH:
luaL_error(L, "image.%s is a read-only variable", img_parms[i].name);
break;
default:
assert(0);
} /* v k t ... */
}
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 ... */
}
static void lua_to_image(lua_State * L, image * a, image_dict * d)
{
int i, t;
const char *s;
s = lua_tostring(L,-2);
t = lua_type(L, -1);
if (lua_key_eq(s,width)) {
if (t == LUA_TNIL) {
set_wd_running(a);
} else if (t == LUA_TNUMBER) {
img_width(a) = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_width(a) = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.width needs integer or nil value or dimension string");
}
} else if (lua_key_eq(s,height)) {
if (t == LUA_TNIL) {
set_ht_running(a);
} else if (t == LUA_TNUMBER) {
img_height(a) = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_height(a) = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.height needs integer or nil value or dimension string");
}
} else if (lua_key_eq(s,depth)) {
if (t == LUA_TNIL) {
set_dp_running(a);
} else if (t == LUA_TNUMBER) {
img_depth(a) = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_depth(a) = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.depth needs integer or nil value or dimension string");
}
} else if (lua_key_eq(s,transform)) {
if (t == LUA_TNUMBER) {
img_transform(a) = (int) lua_tointeger(L, -1);
} else {
luaL_error(L, "image.transform needs integer value");
}
} else if (lua_key_eq(s,filename)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.filename is now read-only");
} else if (img_type(d) == IMG_TYPE_PDFSTREAM) {
luaL_error(L, "image.filename can't be used with image.stream");
} else if (t == LUA_TSTRING) {
xfree(img_filename(d));
img_filename(d) = xstrdup(lua_tostring(L, -1));
} else {
luaL_error(L, "image.filename needs string value");
}
} else if (lua_key_eq(s,visiblefilename)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.visiblefilename is now read-only");
} else if (img_type(d) == IMG_TYPE_PDFSTREAM) {
luaL_error(L, "image.visiblefilename can't be used with image.stream");
} else if (t == LUA_TSTRING) {
xfree(img_visiblefilename(d));
img_visiblefilename(d) = xstrdup(lua_tostring(L, -1));
} else {
luaL_error(L, "image.visiblefilename needs string value");
}
} else if (lua_key_eq(s,attr)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.attr is now read-only");
} else if (t == LUA_TSTRING) {
xfree(img_attr(d));
img_attr(d) = xstrdup(lua_tostring(L, -1));
} else if (t == LUA_TNIL) {
xfree(img_attr(d));
} else {
luaL_error(L, "image.attr needs string or nil value");
}
} else if (lua_key_eq(s,page)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.page is now read-only");
} else if (t == LUA_TSTRING) {
xfree(img_pagename(d));
img_pagename(d) = xstrdup(lua_tostring(L, -1));
img_pagenum(d) = 0;
} else if (t == LUA_TNUMBER) {
img_pagenum(d) = (int) lua_tointeger(L, -1);
xfree(img_pagename(d));
} else {
luaL_error(L, "image.page needs integer or string value");
}
} else if (lua_key_eq(s,colorspace)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.colorspace is now read-only");
} else if (t == LUA_TNIL) {
img_colorspace(d) = 0;
} else if (t == LUA_TNUMBER) {
img_colorspace(d) = (int) lua_tointeger(L, -1);
} else {
luaL_error(L, "image.colorspace needs integer or nil value");
}
} else if (lua_key_eq(s,pagebox)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.pagebox is now read-only");
} else if (t == LUA_TNIL) {
img_pagebox(d) = PDF_BOX_SPEC_MEDIA;
} else if (t == LUA_TNUMBER) {
i = lua_tointeger(L,-1);
if (i < 0 || i >= img_pageboxes_max) {
img_pagebox(d) = PDF_BOX_SPEC_MEDIA;
} else {
img_pagebox(d) = i;
}
} else if (t == LUA_TSTRING) {
img_pagebox(d) = PDF_BOX_SPEC_MEDIA;
for (i = 0; i < img_pageboxes_max; i++) {
lua_rawgeti(L, LUA_REGISTRYINDEX, img_pageboxes[i]);
if (lua_rawequal(L,-1,-2)) {
img_pagebox(d) = i;
lua_pop(L, 1);
break;
} else {
lua_pop(L, 1);
}
}
} else {
luaL_error(L, "image.pagebox needs string, number or nil value");
}
} else if (lua_key_eq(s,keepopen)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.keepopen is now read-only");
} else if (t != LUA_TBOOLEAN) {
luaL_error(L, "image.bbox needs boolean value");
} else {
img_keepopen(d) = lua_toboolean(L, -1);
}
} else if (lua_key_eq(s,bbox)) {
if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.bbox is now read-only");
} else if (t != LUA_TTABLE) {
luaL_error(L, "image.bbox needs table value");
} else if (lua_rawlen(L, -1) != 4) {
luaL_error(L, "image.bbox table must have exactly 4 elements");
} else {
for (i = 1; i <= 4; i++) { /* v k t ... */
lua_pushinteger(L, i); /* idx v k t ... */
lua_gettable(L, -2); /* int v k t ... */
t = lua_type(L, -1);
if (t == LUA_TNUMBER) {
img_bbox(d)[i - 1] = (int) lua_roundnumber(L, -1);
} else if (t == LUA_TSTRING) {
img_bbox(d)[i - 1] = dimen_to_number(L, lua_tostring(L, -1));
} else {
luaL_error(L, "image.bbox table needs integer value or dimension string elements");
}
lua_pop(L, 1); /* v k t ... */
}
img_set_bbox(d);
}
} else if (lua_key_eq(s,stream)) {
if (img_filename(d) != NULL) {
luaL_error(L, "image.stream can't be used with image.filename");
} else if (img_state(d) >= DICT_FILESCANNED) {
luaL_error(L, "image.stream is now read-only");
} else {
if (img_pdfstream_ptr(d) == NULL) {
new_img_pdfstream_struct(d);
}
xfree(img_pdfstream_stream(d));
img_pdfstream_stream(d) = xstrdup(lua_tostring(L, -1));
img_type(d) = IMG_TYPE_PDFSTREAM;
}
} else {
luaL_error(L, "image.%s can not be set", s);
}
}
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);
}
