example.c

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/*
    This file is part of darktable,
    Copyright (C) 2010-2011 Henrik Andersson.
    Copyright (C) 2010-2012, 2014 johannes hanika.
    Copyright (C) 2010 Stuart Henderson.
    Copyright (C) 2010-2018, 2020 Tobias Ellinghaus.
    Copyright (C) 2011 Robert Bieber.
    Copyright (C) 2012 Christian Tellefsen.
    Copyright (C) 2012-2014 Jérémy Rosen.
    Copyright (C) 2012 Richard Wonka.
    Copyright (C) 2012 Simon Spannagel.
    Copyright (C) 2013-2014, 2018, 2020 Pascal Obry.
    Copyright (C) 2014 Pascal de Bruijn.
    Copyright (C) 2014-2016 Roman Lebedev.
    Copyright (C) 2019 Denis Dyakov.
    Copyright (C) 2019 Heiko Bauke.
    Copyright (C) 2019 jakubfi.
    Copyright (C) 2019 Philippe Weyland.
    Copyright (C) 2022 Martin Bařinka.
    Copyright (C) 2023, 2025 Aurélien PIERRE.
    Copyright (C) 2023 Maurizio Paglia.
    Copyright (C) 2023 Ricky Moon.
    
    darktable 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, either version 3 of the License, or
    (at your option) any later version.
    
    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "common/darktable.h"
#include "common/file_location.h"
#include "common/image.h"
#include "common/image_cache.h"
#include "common/imageio.h"
#include "common/imageio_module.h"
#include "control/conf.h"
#include "control/control.h"
#include "dtgtk/button.h"
#include "dtgtk/paint.h"
#include "gui/gtk.h"
#include "imageio/storage/imageio_storage_api.h"
#include <stdio.h>
#include <stdlib.h>
 
DT_MODULE(2)
 
typedef struct _email_attachment_t
{
  int32_t imgid; // The image id of exported image
  gchar *file;    // Full filename of exported image
} _email_attachment_t;
 
// saved params
typedef struct dt_imageio_email_t
{
  char filename[DT_MAX_PATH_FOR_PARAMS];
  GList *images;
} dt_imageio_email_t;
 
 
const char *name(const struct dt_imageio_module_storage_t *self)
{
  return _("send as email");
}
 
void *legacy_params(dt_imageio_module_storage_t *self, const void *const old_params,
                    const size_t old_params_size, const int old_version, const int new_version,
                    size_t *new_size)
{
  if(old_version == 1 && new_version == 2)
  {
    typedef struct dt_imageio_email_v1_t
    {
      char filename[1024];
      GList *images;
    } dt_imageio_email_v1_t;
 
    dt_imageio_email_t *n = (dt_imageio_email_t *)malloc(sizeof(dt_imageio_email_t));
    dt_imageio_email_v1_t *o = (dt_imageio_email_v1_t *)old_params;
 
    g_strlcpy(n->filename, o->filename, sizeof(n->filename));
 
    *new_size = self->params_size(self);
    return n;
  }
  return NULL;
}
 
int recommended_dimension(struct dt_imageio_module_storage_t *self, dt_imageio_module_data_t *data, uint32_t *width, uint32_t *height)
{
  *width = 1536;
  *height = 1536;
  return 1;
}
 
 
void gui_init(dt_imageio_module_storage_t *self)
{
}
 
void gui_cleanup(dt_imageio_module_storage_t *self)
{
  dt_free(self->gui_data);
}
 
void gui_reset(dt_imageio_module_storage_t *self)
{
}
 
int store(dt_imageio_module_storage_t *self, dt_imageio_module_data_t *sdata, const int32_t imgid,
          dt_imageio_module_format_t *format, dt_imageio_module_data_t *fdata, const int num, const int total,
          const gboolean high_quality, const gboolean upscale, const gboolean export_masks,
          dt_colorspaces_color_profile_type_t icc_type, const gchar *icc_filename, dt_iop_color_intent_t icc_intent,
          dt_export_metadata_t *metadata)
{
  dt_imageio_email_t *d = (dt_imageio_email_t *)sdata;
 
  _email_attachment_t *attachment = (_email_attachment_t *)g_malloc(sizeof(_email_attachment_t));
  attachment->imgid = imgid;
 
  /* construct a temporary file name */
  char tmpdir[PATH_MAX] = { 0 };
  dt_loc_get_tmp_dir(tmpdir, sizeof(tmpdir));
 
  char dirname[PATH_MAX] = { 0 };
  gboolean from_cache = FALSE;
  dt_image_full_path(imgid,  dirname,  sizeof(dirname),  &from_cache, __FUNCTION__);
  gchar *filename = g_path_get_basename(dirname);
 
  g_strlcpy(dirname, filename, sizeof(dirname));
 
  dt_image_path_append_version(imgid, dirname, sizeof(dirname));
 
  gchar *end = g_strrstr(dirname, ".") + 1;
 
  if(end) *end = '\0';
 
  g_strlcat(dirname, format->extension(fdata), sizeof(dirname));
 
  // set exported filename
 
  attachment->file = g_build_filename(tmpdir, dirname, (char *)NULL);
 
  if(dt_imageio_export(imgid, attachment->file, format, fdata, high_quality, upscale, TRUE, export_masks, icc_type,
                       icc_filename, icc_intent, self, sdata, num, total, metadata) != 0)
  {
    fprintf(stderr, "[imageio_storage_email] could not export to file: `%s'!\n", attachment->file);
    dt_control_log(_("could not export to file `%s'!"), attachment->file);
    dt_free(attachment->file);
    dt_free(attachment);
    dt_free(filename);
    return 1;
  }
 
  dt_control_log(ngettext("%d/%d exported to `%s'", "%d/%d exported to `%s'", num),
                 num, total, attachment->file);
 
#ifdef _OPENMP // store can be called in parallel, so synch access to shared memory
#pragma omp critical
#endif
  d->images = g_list_append(d->images, attachment);
 
  dt_free(filename);
 
  return 0;
}
 
size_t params_size(dt_imageio_module_storage_t *self)
{
  return sizeof(dt_imageio_email_t) - sizeof(GList *);
}
 
void init(dt_imageio_module_storage_t *self)
{
}
 
void *get_params(dt_imageio_module_storage_t *self)
{
  dt_imageio_email_t *d = (dt_imageio_email_t *)g_malloc0(sizeof(dt_imageio_email_t));
  return d;
}
 
int set_params(dt_imageio_module_storage_t *self, const void *params, const int size)
{
  if(size != self->params_size(self)) return 1;
  return 0;
}
 
void free_params(dt_imageio_module_storage_t *self, dt_imageio_module_data_t *params)
{
  if(IS_NULL_PTR(params)) return;
  dt_free(params);
}
 
void finalize_store(dt_imageio_module_storage_t *self, dt_imageio_module_data_t *params)
{
  dt_imageio_email_t *d = (dt_imageio_email_t *)params;
 
  const gchar *imageBodyFormat = " - %s (%s)\\n";      // filename, exif oneliner
  const gint nb_images = g_list_length(d->images);
  const gint argc = 5 + (2 * nb_images);
 
  char **argv = g_malloc0(sizeof(char *) * (argc + 1));
 
  gchar *body = NULL;
 
  argv[0] = "xdg-email";
  argv[1] = "--subject";
  argv[2] = _("images exported from Ansel");
  argv[3] = "--body";
  int n = 5;
 
  for(GList *iter = d->images; iter; iter = g_list_next(iter))
  {
    gchar exif[256] = { 0 };
    _email_attachment_t *attachment = (_email_attachment_t *)iter->data;
    gchar *filename = g_path_get_basename(attachment->file);
    const dt_image_t *img = dt_image_cache_get(darktable.image_cache, attachment->imgid, 'r');
    dt_image_print_exif(img, exif, sizeof(exif));
    dt_image_cache_read_release(darktable.image_cache, img);
 
    gchar *imgbody = g_strdup_printf(imageBodyFormat, filename, exif);
    if (!IS_NULL_PTR(body)) {
      gchar *body_bak = body;
      body = g_strconcat(body_bak, imgbody, NULL);
      dt_free(body_bak);
    }
    else
    {
      body = g_strdup(imgbody);
    }
    dt_free(imgbody);
    dt_free(filename);
 
    argv[n]   = g_strdup("--attach");
    // use attachment->file directly as we need to freed it, and this way it will be
    // freed as part of the argument release after the spawn below.
    argv[n+1] = attachment->file;
    n += 2;
  }
  g_list_free_full(d->images, dt_free_gpointer);
  d->images = NULL;
 
  argv[4] = body;
 
  argv[argc] = NULL;
 
  fprintf(stderr, "[email] launching '");
  for (int k=0; k<argc; k++) fprintf(stderr, " %s", argv[k]);
  fprintf(stderr, "'\n");
 
  gint exit_status = 0;
 
  g_spawn_sync (NULL, argv, NULL, G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | G_SPAWN_STDERR_TO_DEV_NULL,
                NULL, NULL, NULL, NULL, &exit_status, NULL);
 
  for (int k=4; k<argc; k++) dt_free(argv[k]);
  dt_free(argv);
 
  if(exit_status)
  {
    dt_control_log(_("could not launch email client!"));
  }
}
 
int supported(struct dt_imageio_module_storage_t *storage, struct dt_imageio_module_format_t *format)
{
  const char *mime = format->mime(NULL);
  if(mime[0] == '\0') // this seems to be the copy format
    return 0;
 
  return 1;
}
 
// clang-format off
// modelines: These editor modelines have been set for all relevant files by tools/update_modelines.py
// vim: shiftwidth=2 expandtab tabstop=2 cindent
// kate: tab-indents: off; indent-width 2; replace-tabs on; indent-mode cstyle; remove-trailing-spaces modified;
// clang-format on