equipment.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <stdarg.h>
   5 #include <time.h>
   6
   7 #include "dive.h"
   8 #include "display.h"
   9 #include "divelist.h"
  10
  11 struct cylinder_widget {
  12         int index, changed;
  13         const char *name;
  14         GtkWidget *hbox;
  15         GtkComboBox *description;
  16         GtkSpinButton *size, *pressure;
  17         GtkWidget *o2, *gasmix_button;
  18 };
  19
  20 static struct cylinder_widget gtk_cylinder[MAX_CYLINDERS];
  21
  22 static void set_cylinder_spinbuttons(struct cylinder_widget *cylinder, int ml, int mbar)
  23 {
  24         double volume, pressure;
  25
  26         volume = ml / 1000.0;
  27         pressure = mbar / 1000.0;
  28         if (mbar) {
  29                 if (output_units.volume == CUFT) {
  30                         volume /= 28.3168466;   /* Liters to cuft */
  31                         volume *= pressure / 1.01325;
  32                 }
  33                 if (output_units.pressure == PSI) {
  34                         pressure *= 14.5037738; /* Bar to PSI */
  35                 }
  36         }
  37
  38         gtk_spin_button_set_value(cylinder->size, volume);
  39         gtk_spin_button_set_value(cylinder->pressure, pressure);
  40 }
  41
  42 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
  43 {
  44         GtkTreeIter iter;
  45         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
  46         GValue value1 = {0, }, value2 = {0,};
  47         struct cylinder_widget *cylinder = data;
  48         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
  49
  50         /* Did the user set it to some non-standard value? */
  51         if (!gtk_combo_box_get_active_iter(combo_box, &iter)) {
  52                 cylinder->changed = 1;
  53                 return;
  54         }
  55
  56         /*
  57          * We get "change" signal callbacks just because we set
  58          * the description by hand. Whatever. So ignore them if
  59          * they are no-ops.
  60          */
  61         if (!cylinder->changed && cyl->type.description) {
  62                 int same;
  63                 char *desc = gtk_combo_box_get_active_text(combo_box);
  64
  65                 same = !strcmp(desc, cyl->type.description);
  66                 g_free(desc);
  67                 if (same)
  68                         return;
  69         }
  70         cylinder->changed = 1;
  71
  72         gtk_tree_model_get_value(model, &iter, 1, &value1);
  73         gtk_tree_model_get_value(model, &iter, 2, &value2);
  74
  75         set_cylinder_spinbuttons(cylinder, g_value_get_int(&value1), g_value_get_int(&value2));
  76 }
  77
  78 /*
  79  * The gtk_tree_model_foreach() interface is bad. It could have
  80  * returned whether the callback ever returned true
  81  */
  82 static int found_match = 0;
  83
  84 static gboolean match_cylinder(GtkTreeModel *model,
  85                                 GtkTreePath *path,
  86                                 GtkTreeIter *iter,
  87                                 gpointer data)
  88 {
  89         const char *name;
  90         struct cylinder_widget *cylinder = data;
  91         GValue value = {0, };
  92
  93         gtk_tree_model_get_value(model, iter, 0, &value);
  94         name = g_value_get_string(&value);
  95         if (strcmp(cylinder->name, name))
  96                 return FALSE;
  97         gtk_combo_box_set_active_iter(cylinder->description, iter);
  98         found_match = 1;
  99         return TRUE;
 100 }
 101
 102 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 103 {
 104         GtkTreeModel *model;
 105
 106         found_match = 0;
 107         model = gtk_combo_box_get_model(cylinder->description);
 108         cylinder->name = desc;
 109         gtk_tree_model_foreach(model, match_cylinder, cylinder);
 110
 111         if (!found_match) {
 112                 GtkListStore *store = GTK_LIST_STORE(model);
 113                 GtkTreeIter iter;
 114
 115                 gtk_list_store_append(store, &iter);
 116                 gtk_list_store_set(store, &iter,
 117                         0, desc,
 118                         1, ml,
 119                         2, mbar,
 120                         -1);
 121                 gtk_combo_box_set_active_iter(cylinder->description, &iter);
 122         }
 123 }
 124
 125 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 126 {
 127         const char *desc;
 128         int ml, mbar;
 129         double o2;
 130
 131         /* Don't show uninitialized cylinder widgets */
 132         if (!cylinder->description)
 133                 return;
 134
 135         desc = cyl->type.description;
 136         if (!desc)
 137                 desc = "";
 138         ml = cyl->type.size.mliter;
 139         mbar = cyl->type.workingpressure.mbar;
 140         add_cylinder(cylinder, desc, ml, mbar);
 141
 142         set_cylinder_spinbuttons(cylinder, cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 143         o2 = cyl->gasmix.o2.permille / 10.0;
 144         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 145         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 146         if (!o2)
 147                 o2 = 21.0;
 148         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 149 }
 150
 151 void show_dive_equipment(struct dive *dive)
 152 {
 153         int i;
 154
 155         for (i = 0; i < MAX_CYLINDERS; i++)
 156                 show_cylinder(dive->cylinder + i, gtk_cylinder+i);
 157 }
 158
 159 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 160 {
 161         GtkWidget *frame, *hbox, *button;
 162
 163         frame = gtk_frame_new(name);
 164         gtk_box_pack_start(GTK_BOX(vbox), frame, FALSE, TRUE, 0);
 165
 166         hbox = gtk_hbox_new(FALSE, 3);
 167         gtk_container_add(GTK_CONTAINER(frame), hbox);
 168
 169         button = gtk_spin_button_new_with_range(min, max, incr);
 170         gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, TRUE, 0);
 171
 172         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 173
 174         return button;
 175 }
 176
 177 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc, double volume, double pressure, int o2)
 178 {
 179         int mbar, ml;
 180
 181         if (output_units.pressure == PSI)
 182                 pressure /= 14.5037738;
 183
 184         if (pressure && output_units.volume == CUFT) {
 185                 volume *= 28.3168466;   /* CUFT to liter */
 186                 volume /= pressure / 1.01325;
 187         }
 188
 189         ml = volume * 1000 + 0.5;
 190         mbar = pressure * 1000 + 0.5;
 191
 192         if (o2 < 211)
 193                 o2 = 0;
 194         cyl->type.description = desc;
 195         cyl->type.size.mliter = ml;
 196         cyl->type.workingpressure.mbar = mbar;
 197         cyl->gasmix.o2.permille = o2;
 198
 199         /*
 200          * Also, insert it into the model if it doesn't already exist
 201          */
 202         add_cylinder(cylinder, desc, ml, mbar);
 203 }
 204
 205 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 206 {
 207         const gchar *desc;
 208         GtkComboBox *box;
 209         double volume, pressure;
 210         int o2;
 211
 212         /* Ignore uninitialized cylinder widgets */
 213         box = cylinder->description;
 214         if (!box)
 215                 return;
 216
 217         desc = gtk_combo_box_get_active_text(box);
 218         volume = gtk_spin_button_get_value(cylinder->size);
 219         pressure = gtk_spin_button_get_value(cylinder->pressure);
 220         o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 221         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 222                 o2 = 0;
 223         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, o2);
 224 }
 225
 226 void flush_dive_equipment_changes(struct dive *dive)
 227 {
 228         int i;
 229
 230         for (i = 0; i < MAX_CYLINDERS; i++)
 231                 record_cylinder_changes(dive->cylinder+i, gtk_cylinder+i);
 232 }
 233
 234 /*
 235  * We hardcode the most common standard cylinders,
 236  * we should pick up any other names from the dive
 237  * logs directly.
 238  */
 239 static struct tank_info {
 240         const char *name;
 241         int size;       /* cuft if < 1000, otherwise mliter */
 242         int psi;        /* If zero, size is in mliter */
 243 } tank_info[100] = {
 244         /* Need an empty entry for the no-cylinder case */
 245         { "", 0, 0 },
 246
 247         /* Size-only metric cylinders */
 248         { "10.0 l", 10000 },
 249         { "11.1 l", 11100 },
 250
 251         /* Most common AL cylinders */
 252         { "AL50",   50, 3000 },
 253         { "AL63",   63, 3000 },
 254         { "AL72",   72, 3000 },
 255         { "AL80",   80, 3000 },
 256         { "AL100", 100, 3300 },
 257
 258         /* Somewhat common LP steel cylinders */
 259         { "LP85",   85, 2640 },
 260         { "LP95",   95, 2640 },
 261         { "LP108", 108, 2640 },
 262         { "LP121", 121, 2640 },
 263
 264         /* Somewhat common HP steel cylinders */
 265         { "HP65",   65, 3442 },
 266         { "HP80",   80, 3442 },
 267         { "HP100", 100, 3442 },
 268         { "HP119", 119, 3442 },
 269         { "HP130", 130, 3442 },
 270
 271         /* We'll fill in more from the dive log dynamically */
 272         { NULL, }
 273 };
 274
 275 static void fill_tank_list(GtkListStore *store)
 276 {
 277         GtkTreeIter iter;
 278         struct tank_info *info = tank_info;
 279
 280         while (info->name) {
 281                 int size = info->size;
 282                 int psi = info->psi;
 283                 int mbar = 0, ml = size;
 284
 285                 /* Is it in cuft and psi? */
 286                 if (psi) {
 287                         double bar = 0.0689475729 * psi;
 288                         double airvolume = 28316.8466 * size;
 289                         double atm = bar / 1.01325;
 290
 291                         ml = airvolume / atm + 0.5;
 292                         mbar = bar*1000 + 0.5;
 293                 }
 294
 295                 gtk_list_store_append(store, &iter);
 296                 gtk_list_store_set(store, &iter,
 297                         0, info->name,
 298                         1, ml,
 299                         2, mbar,
 300                         -1);
 301                 info++;
 302         }
 303 }
 304
 305 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 306 {
 307         struct cylinder_widget *cylinder = data;
 308         int state;
 309
 310         state = gtk_toggle_button_get_active(button);
 311         gtk_widget_set_sensitive(cylinder->o2, state);
 312 }
 313
 314 static void cylinder_widget(int nr, GtkListStore *model)
 315 {
 316         struct cylinder_widget *cylinder;
 317         GtkWidget *frame, *hbox, *hbox2;
 318         GtkWidget *widget;
 319         char buffer[80];
 320
 321         cylinder = gtk_cylinder + nr;
 322         cylinder->index = nr;
 323
 324         hbox = gtk_hbox_new(FALSE, 3);
 325         cylinder->hbox = hbox;
 326
 327         snprintf(buffer, sizeof(buffer), "Cylinder %d", nr+1);
 328         frame = gtk_frame_new(buffer);
 329         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 330
 331         hbox2 = gtk_hbox_new(FALSE, 3);
 332         gtk_container_add(GTK_CONTAINER(frame), hbox2);
 333
 334         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 335         gtk_box_pack_start(GTK_BOX(hbox2), widget, FALSE, TRUE, 0);
 336
 337         cylinder->description = GTK_COMBO_BOX(widget);
 338         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 339
 340         widget = create_spinbutton(hbox, "Size", 0, 200, 0.1);
 341         cylinder->size = GTK_SPIN_BUTTON(widget);
 342
 343         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 344         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 345
 346         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 347         cylinder->o2 = widget;
 348         cylinder->gasmix_button = gtk_check_button_new();
 349         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 350                 cylinder->gasmix_button, FALSE, FALSE, 3);
 351         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 352
 353         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 354 }
 355
 356 static GtkListStore *create_tank_size_model(void)
 357 {
 358         GtkListStore *model;
 359
 360         model = gtk_list_store_new(3,
 361                 G_TYPE_STRING,          /* Tank name */
 362                 G_TYPE_INT,             /* Tank size in mliter */
 363                 G_TYPE_INT,             /* Tank working pressure in mbar */
 364                 -1);
 365
 366         fill_tank_list(model);
 367         return model;
 368 }
 369
 370 GtkWidget *equipment_widget(void)
 371 {
 372         int i;
 373         GtkWidget *vbox;
 374         GtkListStore *model;
 375
 376         vbox = gtk_vbox_new(FALSE, 3);
 377
 378         model = create_tank_size_model();
 379
 380         /* Create all MAX_CYLINDER gtk widgets */
 381         for (i = 0; i < MAX_CYLINDERS; i++)
 382                 cylinder_widget(i, model);
 383
 384         /* But only connect two of them right now to the frame vbox */
 385         for (i = 0; i < 2; i++) {
 386                 struct cylinder_widget *cylinder = gtk_cylinder+i;
 387                 gtk_box_pack_start(GTK_BOX(vbox), cylinder->hbox, FALSE, TRUE, 0);
 388         }
 389
 390         return vbox;
 391 }