src/pan-view/pan-timeline.cc

   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 <ctime>
  25
  26 #include "filedata.h"
  27 #include "pan-item.h"
  28 #include "pan-types.h"
  29 #include "pan-util.h"
  30 #include "pan-view-filter.h"
  31 #include "pan-view.h"
  32 #include "typedefs.h"
  33
  34 namespace
  35 {
  36
  37 constexpr gint PAN_GROUP_MAX = 16;
  38
  39 } // namespace
  40
  41 void pan_timeline_compute(PanWindow *pw, FileData *dir_fd, gint *width, gint *height)
  42 {
  43         GList *list;
  44         GList *work;
  45         gint x;
  46         gint y;
  47         time_t group_start_date;
  48         gint total;
  49         gint count;
  50         PanItem *pi_month = nullptr;
  51         PanItem *pi_day = nullptr;
  52         gint month_start;
  53         gint day_start;
  54         gint x_width;
  55         gint y_height;
  56
  57         list = pan_list_tree(dir_fd, SORT_NONE, TRUE, TRUE, pw->ignore_symlinks);
  58         pan_filter_fd_list(&list, pw->filter_ui->filter_elements, pw->filter_ui->filter_classes);
  59
  60         if (pw->cache_list && pw->exif_date_enable)
  61                 {
  62                 pw->cache_list = pan_cache_sort(pw->cache_list, SORT_NAME, TRUE, TRUE);
  63                 list = filelist_sort(list, SORT_NAME, TRUE, TRUE);
  64                 pan_cache_sync_date(pw, list);
  65                 }
  66
  67         pw->cache_list = pan_cache_sort(pw->cache_list, SORT_TIME, TRUE, TRUE);
  68         list = filelist_sort(list, SORT_TIME, TRUE, TRUE);
  69
  70         *width = PAN_BOX_BORDER * 2;
  71         *height = PAN_BOX_BORDER * 2;
  72
  73         x = 0;
  74         y = 0;
  75         month_start = y;
  76         day_start = month_start;
  77         x_width = 0;
  78         y_height = 0;
  79         group_start_date = 0;
  80         // total and count are used to enforce a stride of PAN_GROUP_MAX thumbs.
  81         total = 0;
  82         count = 0;
  83         work = list;
  84         while (work)
  85                 {
  86                 FileData *fd;
  87                 PanItem *pi;
  88
  89                 fd = static_cast<FileData *>(work->data);
  90                 work = work->next;
  91
  92                 if (!pan_date_compare(fd->date, group_start_date, PAN_DATE_LENGTH_DAY))
  93                         {
  94                         // FD starts a new day group.
  95                         GList *needle;
  96                         gchar *buf;
  97
  98                         if (!pan_date_compare(fd->date, group_start_date, PAN_DATE_LENGTH_MONTH))
  99                                 {
 100                                 // FD starts a new month group.
 101                                 pi_day = nullptr;
 102
 103                                 if (pi_month)
 104                                         {
 105                                         x = pi_month->x + pi_month->width + PAN_BOX_BORDER;
 106                                         }
 107                                 else
 108                                         {
 109                                         x = PAN_BOX_BORDER;
 110                                         }
 111
 112                                 y = PAN_BOX_BORDER;
 113
 114                                 buf = pan_date_value_string(fd->date, PAN_DATE_LENGTH_MONTH);
 115                                 pi = pan_item_text_new(pw, x, y, buf,
 116                                                        static_cast<PanTextAttrType>(PAN_TEXT_ATTR_BOLD | PAN_TEXT_ATTR_HEADING),
 117                                                        PAN_BORDER_3,
 118                                                        {PAN_TEXT_COLOR, 255});
 119                                 g_free(buf);
 120                                 y += pi->height;
 121
 122                                 pi_month = pan_item_box_new(pw, file_data_ref(fd),
 123                                                             x, y, 0, 0,
 124                                                             PAN_BOX_OUTLINE_THICKNESS,
 125                                                             {PAN_BOX_COLOR, PAN_BOX_ALPHA},
 126                                                             {PAN_BOX_OUTLINE_COLOR, PAN_BOX_OUTLINE_ALPHA});
 127
 128                                 x += PAN_BOX_BORDER;
 129                                 y += PAN_BOX_BORDER;
 130                                 month_start = y;
 131                                 }
 132
 133                         if (pi_day) x = pi_day->x + pi_day->width + PAN_BOX_BORDER;
 134
 135                         group_start_date = fd->date;
 136                         total = 1;
 137                         count = 0;
 138
 139                         needle = work;
 140                         while (needle)
 141                                 {
 142                                 FileData *nfd;
 143
 144                                 nfd = static_cast<FileData *>(needle->data);
 145                                 if (pan_date_compare(nfd->date, group_start_date, PAN_DATE_LENGTH_DAY))
 146                                         {
 147                                         needle = needle->next;
 148                                         total++;
 149                                         }
 150                                 else
 151                                         {
 152                                         needle = nullptr;
 153                                         }
 154                                 }
 155
 156                         buf = pan_date_value_string(fd->date, PAN_DATE_LENGTH_WEEK);
 157                         pi = pan_item_text_new(pw, x, y, buf, PAN_TEXT_ATTR_NONE,
 158                                                PAN_BORDER_3,
 159                                                {PAN_TEXT_COLOR, 255});
 160                         g_free(buf);
 161
 162                         y += pi->height;
 163
 164                         pi_day = pan_item_box_new(pw, file_data_ref(fd), x, y, 0, 0,
 165                                                   PAN_BOX_OUTLINE_THICKNESS,
 166                                                   {PAN_BOX_COLOR, PAN_BOX_ALPHA},
 167                                                   {PAN_BOX_OUTLINE_COLOR, PAN_BOX_OUTLINE_ALPHA});
 168
 169                         x += PAN_BOX_BORDER;
 170                         y += PAN_BOX_BORDER;
 171                         day_start = y;
 172                         }
 173
 174                 if (pw->size > PAN_IMAGE_SIZE_THUMB_LARGE)
 175                         {
 176                         pi = pan_item_image_new(pw, fd, x, y, 10, 10);
 177                         if (pi->width > x_width) x_width = pi->width;
 178                         y_height = pi->height;
 179                         }
 180                 else
 181                         {
 182                         pi = pan_item_thumb_new(pw, fd, x, y);
 183                         x_width = PAN_THUMB_SIZE;
 184                         y_height = PAN_THUMB_SIZE;
 185                         }
 186
 187                 pan_item_size_by_item(pi_day, pi, PAN_BOX_BORDER);
 188                 pan_item_size_by_item(pi_month, pi_day, PAN_BOX_BORDER);
 189
 190                 total--;
 191                 count++;
 192
 193                 if (total > 0 && count < PAN_GROUP_MAX)
 194                         {
 195                         y += y_height + PAN_THUMB_GAP;
 196                         }
 197                 else
 198                         {
 199                         x += x_width + PAN_THUMB_GAP;
 200                         x_width = 0;
 201                         count = 0;
 202
 203                         if (total > 0)
 204                                 y = day_start;
 205                         else
 206                                 y = month_start;
 207                         }
 208
 209                 pan_item_size_coordinates(pi_month, PAN_BOX_BORDER, width, height);
 210                 }
 211
 212         g_list_free(list);
 213 }
 214 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */