src/pan-view/pan-timeline.c

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "pan-timeline.h"
  23
  24 #include "metadata.h"
  25 #include "pan-item.h"
  26 #include "pan-util.h"
  27 #include "pan-view.h"
  28 #include "ui_fileops.h"
  29
  30 void pan_timeline_compute(PanWindow *pw, FileData *dir_fd, gint *width, gint *height)
  31 {
  32         GList *list;
  33         GList *work;
  34         GHashTable *filter_kw_table;
  35         GHashTableIter filter_kw_iter;
  36         gchar *filter_kw;
  37         gint x, y;
  38         time_t group_start_date;
  39         gint total;
  40         gint count;
  41         PanItem *pi_month = NULL;
  42         PanItem *pi_day = NULL;
  43         gint month_start;
  44         gint day_start;
  45         gint x_width;
  46         gint y_height;
  47
  48         list = pan_list_tree(dir_fd, SORT_NONE, TRUE, pw->ignore_symlinks);
  49         filter_kw_table = pw->filter_ui->filter_kw_table;  // Shorthand.
  50
  51         if (pw->cache_list && pw->exif_date_enable)
  52                 {
  53                 pw->cache_list = pan_cache_sort(pw->cache_list, SORT_NAME, TRUE);
  54                 list = filelist_sort(list, SORT_NAME, TRUE);
  55                 pan_cache_sync_date(pw, list);
  56                 }
  57
  58         pw->cache_list = pan_cache_sort(pw->cache_list, SORT_TIME, TRUE);
  59         list = filelist_sort(list, SORT_TIME, TRUE);
  60
  61         *width = PAN_BOX_BORDER * 2;
  62         *height = PAN_BOX_BORDER * 2;
  63
  64         x = 0;
  65         y = 0;
  66         month_start = y;
  67         day_start = month_start;
  68         x_width = 0;
  69         y_height = 0;
  70         group_start_date = 0;
  71         // total and count are used to enforce a stride of PAN_GROUP_MAX thumbs.
  72         total = 0;
  73         count = 0;
  74         work = list;
  75         while (work)
  76                 {
  77                 FileData *fd;
  78                 PanItem *pi;
  79
  80                 fd = work->data;
  81                 work = work->next;
  82
  83                 // Don't show images that fail the keyword test.
  84                 if (g_hash_table_size(filter_kw_table) > 0)
  85                         {
  86                         gint match_count = 0;
  87                         gint miss_count = 0;
  88                         // TODO(xsdg): OPTIMIZATION Do the search inside of metadata.c to avoid a
  89                         // bunch of string list copies.
  90                         // TODO(xsdg): Allow user to switch between union and intersection.
  91                         GList *img_keywords = metadata_read_list(fd, KEYWORD_KEY, METADATA_PLAIN);
  92                         if (!img_keywords) continue;
  93
  94                         g_hash_table_iter_init(&filter_kw_iter, filter_kw_table);
  95                         while (g_hash_table_iter_next(&filter_kw_iter, (void**)&filter_kw, NULL))
  96                                 {
  97                                 if (g_list_find_custom(img_keywords, filter_kw, (GCompareFunc)g_strcmp0))
  98                                         {
  99                                         ++match_count;
 100                                         }
 101                                 else
 102                                         {
 103                                         ++miss_count;
 104                                         }
 105                                 if (miss_count > 0) break;
 106                                 }
 107
 108                         string_list_free(img_keywords);
 109                         if (miss_count > 0 || match_count == 0) continue;
 110                         }
 111
 112                 if (!pan_date_compare(fd->date, group_start_date, PAN_DATE_LENGTH_DAY))
 113                         {
 114                         // FD starts a new day group.
 115                         GList *needle;
 116                         gchar *buf;
 117
 118                         if (!pan_date_compare(fd->date, group_start_date, PAN_DATE_LENGTH_MONTH))
 119                                 {
 120                                 // FD starts a new month group.
 121                                 pi_day = NULL;
 122
 123                                 if (pi_month)
 124                                         {
 125                                         x = pi_month->x + pi_month->width + PAN_BOX_BORDER;
 126                                         }
 127                                 else
 128                                         {
 129                                         x = PAN_BOX_BORDER;
 130                                         }
 131
 132                                 y = PAN_BOX_BORDER;
 133
 134                                 buf = pan_date_value_string(fd->date, PAN_DATE_LENGTH_MONTH);
 135                                 pi = pan_item_text_new(pw, x, y, buf,
 136                                                        PAN_TEXT_ATTR_BOLD | PAN_TEXT_ATTR_HEADING,
 137                                                        PAN_TEXT_BORDER_SIZE,
 138                                                        PAN_TEXT_COLOR, 255);
 139                                 g_free(buf);
 140                                 y += pi->height;
 141
 142                                 pi_month = pan_item_box_new(pw, file_data_ref(fd),
 143                                                             x, y, 0, 0,
 144                                                             PAN_BOX_OUTLINE_THICKNESS,
 145                                                             PAN_BOX_COLOR, PAN_BOX_ALPHA,
 146                                                             PAN_BOX_OUTLINE_COLOR, PAN_BOX_OUTLINE_ALPHA);
 147
 148                                 x += PAN_BOX_BORDER;
 149                                 y += PAN_BOX_BORDER;
 150                                 month_start = y;
 151                                 }
 152
 153                         if (pi_day) x = pi_day->x + pi_day->width + PAN_BOX_BORDER;
 154
 155                         group_start_date = fd->date;
 156                         total = 1;
 157                         count = 0;
 158
 159                         needle = work;
 160                         while (needle)
 161                                 {
 162                                 FileData *nfd;
 163
 164                                 nfd = needle->data;
 165                                 if (pan_date_compare(nfd->date, group_start_date, PAN_DATE_LENGTH_DAY))
 166                                         {
 167                                         needle = needle->next;
 168                                         total++;
 169                                         }
 170                                 else
 171                                         {
 172                                         needle = NULL;
 173                                         }
 174                                 }
 175
 176                         buf = pan_date_value_string(fd->date, PAN_DATE_LENGTH_WEEK);
 177                         pi = pan_item_text_new(pw, x, y, buf, PAN_TEXT_ATTR_NONE,
 178                                                PAN_TEXT_BORDER_SIZE,
 179                                                PAN_TEXT_COLOR, 255);
 180                         g_free(buf);
 181
 182                         y += pi->height;
 183
 184                         pi_day = pan_item_box_new(pw, file_data_ref(fd), x, y, 0, 0,
 185                                                   PAN_BOX_OUTLINE_THICKNESS,
 186                                                   PAN_BOX_COLOR, PAN_BOX_ALPHA,
 187                                                   PAN_BOX_OUTLINE_COLOR, PAN_BOX_OUTLINE_ALPHA);
 188
 189                         x += PAN_BOX_BORDER;
 190                         y += PAN_BOX_BORDER;
 191                         day_start = y;
 192                         }
 193
 194                 if (pw->size > PAN_IMAGE_SIZE_THUMB_LARGE)
 195                         {
 196                         pi = pan_item_image_new(pw, fd, x, y, 10, 10);
 197                         if (pi->width > x_width) x_width = pi->width;
 198                         y_height = pi->height;
 199                         }
 200                 else
 201                         {
 202                         pi = pan_item_thumb_new(pw, fd, x, y);
 203                         x_width = PAN_THUMB_SIZE;
 204                         y_height = PAN_THUMB_SIZE;
 205                         }
 206
 207                 pan_item_size_by_item(pi_day, pi, PAN_BOX_BORDER);
 208                 pan_item_size_by_item(pi_month, pi_day, PAN_BOX_BORDER);
 209
 210                 total--;
 211                 count++;
 212
 213                 if (total > 0 && count < PAN_GROUP_MAX)
 214                         {
 215                         y += y_height + PAN_THUMB_GAP;
 216                         }
 217                 else
 218                         {
 219                         x += x_width + PAN_THUMB_GAP;
 220                         x_width = 0;
 221                         count = 0;
 222
 223                         if (total > 0)
 224                                 y = day_start;
 225                         else
 226                                 y = month_start;
 227                         }
 228
 229                 pan_item_size_coordinates(pi_month, PAN_BOX_BORDER, width, height);
 230                 }
 231
 232         g_list_free(list);
 233 }
 234 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */