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%% options
copyright owner = Dirk Krause
copyright year = 2013-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
#ifdef __cplusplus
extern "C" {
#endif
/** Find image dimensions.
@param job Job structure.
@param fn Image file name.
@param w Pointer to result variable for width.
@param h Pointer to result variable for height.
@param save Flag: Save result to cache.
@return 1 on success, 0 on error.
*/
int
hbimgdim_find(
hb_job_t *job,
dkChar const *fn,
unsigned long *w,
unsigned long *h,
int save
);
/** Create image dimension cache entry, allocate memory.
@param fn Image file name.
@param w Image width.
@param h Image height.
@param app Application structure for diagnostics, may be NULL.
@return Pointer to new entry on success, NULL on error.
*/
hb_img_dim_t *
hbimgdim_new(
dkChar const *fn,
unsigned long w,
unsigned long h,
dk3_app_t *app
);
/** Delete image dimension cache entry, release memory.
@param ptr Cache entry to delete.
*/
void
hbimgdim_delete(hb_img_dim_t *ptr);
/** Compare two image dimension entries.
@param l Left entry pointer.
@param r Right entry pointer or file name pointer.
@param cr Comparison criteria (0=entry/entry, 1=entry/name).
@return Comparison result.
*/
int
hbimgdim_compare(void const *l, void const *r, int cr);
#ifdef __cplusplus
}
#endif
%% module
#include "dk3all.h"
#include "dk3bif.h"
#include "htmlbook.h"
$!trace-include
/** File name suffixes used by SVG files.
*/
static const dkChar * const svg_suffixes[] = {
dkT(".svg"), dkT(".svgz"), NULL
};
static
int
is_svg_file(dkChar const *fn)
{
const dkChar *psuff = NULL;
int back = 0;
int ind;
$? "+ is_svg_file \"%!ds\"", fn
if (NULL != fn) {
psuff = dk3str_get_suffix(fn);
if (NULL != psuff) {
ind = dk3str_array_index(svg_suffixes, psuff, 0);
if (-1 < ind) {
back = 1;
}
}
}
$? "- is_svg_file %d", back
return back;
}
int
hbimgdim_compare(void const *l, void const *r, int cr)
{
int back = 0;
hb_img_dim_t *pl;
hb_img_dim_t *pr;
$? "+ hbimgdim_compare PTR=%d PTR=%d", TR_IPTR(l), TR_IPTR(r)
if(l) {
if(r) {
pl = (hb_img_dim_t *)l;
switch(cr) {
case 1: {
back = dk3str_fncmp(pl->fn, (dkChar const *)r);
} break;
default: {
pr = (hb_img_dim_t *)r;
back = dk3str_fncmp(pl->fn, pr->fn);
} break;
}
if(-1 > back) { back = -1; }
if( 1 < back) { back = 1; }
} else back = 1;
} else {
if(r) back = -1;
} $? "- hbimgdim_compare %d", back
return back;
}
void
hbimgdim_delete(hb_img_dim_t *ptr)
{
$? "+ hbimgdim_delete"
if(ptr) {
dk3_release(ptr->fn);
ptr->w = 0UL;
ptr->h = 0UL;
dk3_delete(ptr);
} $? "- hbimgdim_delete"
}
hb_img_dim_t *
hbimgdim_new(dkChar const *fn, unsigned long w, unsigned long h, dk3_app_t *app)
{
hb_img_dim_t *back = NULL;
$? "+ hbimgdim_new"
back = dk3_new_app(hb_img_dim_t,1,app);
if(back) {
back->w = w;
back->h = h;
back->fn = dk3str_dup_app(fn,app);
if(!(back->fn)) {
hbimgdim_delete(back);
back = NULL;
}
} $? "- hbimgdim_new PTR=%d", TR_IPTR(back)
return back;
}
int
hbimgdim_find(
hb_job_t *job,
dkChar const *fn,
unsigned long *w,
unsigned long *h,
int save
)
{
hb_img_dim_t *idptr; /* Image dimension found or new */
dk3_bif_t *bp; /* BIF object for graphics file */
unsigned long xw; /* Width read from file */
unsigned long xh; /* Height read from file */
int back = 0;
$? "+ hbimgdim_find"
if((job) && (fn) && (w) && (h)) {
idptr = (hb_img_dim_t *)dk3sto_it_find_like(job->i_imgdim, fn, 1);
if(idptr) {
*w = idptr->w;
*h = idptr->h;
back = 1;
} else {
if (0 == is_svg_file(fn)) {
bp = dk3bif_open_filename_app(fn, DK3_BIF_IMAGE_TYPE_UNKNOWN, job->app);
if(bp) {
xw = dk3bif_get_width(bp);
xh = dk3bif_get_height(bp);
dk3bif_close(bp);
if((xw) && (xh)) {
*w = xw;
*h = xh;
back = 1;
if(save) {
idptr = hbimgdim_new(fn, xw, xh, job->app);
if(idptr) {
if(!(dk3sto_add(job->s_imgdim, idptr))) {
hbimgdim_delete(idptr);
}
}
}
}
}
} else {
/* TODO: Find SVG width and height */
}
}
} $? "- hbimgdim_find %d", back
return back;
}
|