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 static int cylinder_changed;
  12 static GtkComboBox *cylinder_description;
  13 static GtkSpinButton *cylinder_size, *cylinder_pressure, *nitrox_value;
  14
  15 static void set_cylinder_spinbuttons(int ml, int mbar)
  16 {
  17         double volume, pressure;
  18
  19         volume = ml / 1000.0;
  20         pressure = mbar / 1000.0;
  21         if (mbar) {
  22                 if (output_units.volume == CUFT) {
  23                         volume /= 28.3168466;   /* Liters to cuft */
  24                         volume *= pressure / 1.01325;
  25                 }
  26                 if (output_units.pressure == PSI) {
  27                         pressure *= 14.5037738; /* Bar to PSI */
  28                 }
  29         }
  30
  31         gtk_spin_button_set_value(cylinder_size, volume);
  32         gtk_spin_button_set_value(cylinder_pressure, pressure);
  33 }
  34
  35 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
  36 {
  37         GtkTreeIter iter;
  38         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
  39         GValue value1 = {0, }, value2 = {0,};
  40         cylinder_t *cyl = current_dive->cylinder + 0;
  41
  42         /* Did the user set it to some non-standard value? */
  43         if (!gtk_combo_box_get_active_iter(combo_box, &iter)) {
  44                 cylinder_changed = 1;
  45                 return;
  46         }
  47
  48         /*
  49          * We get "change" signal callbacks just because we set
  50          * the description by hand. Whatever. So ignore them if
  51          * they are no-ops.
  52          */
  53         if (!cylinder_changed && cyl->type.description) {
  54                 int same;
  55                 char *desc = gtk_combo_box_get_active_text(combo_box);
  56
  57                 same = !strcmp(desc, cyl->type.description);
  58                 g_free(desc);
  59                 if (same)
  60                         return;
  61         }
  62         cylinder_changed = 1;
  63
  64         gtk_tree_model_get_value(model, &iter, 1, &value1);
  65         gtk_tree_model_get_value(model, &iter, 2, &value2);
  66
  67         set_cylinder_spinbuttons(g_value_get_int(&value1), g_value_get_int(&value2));
  68 }
  69
  70 /*
  71  * The gtk_tree_model_foreach() interface is bad. It could have
  72  * returned whether the callback ever returned true
  73  */
  74 static int found_match = 0;
  75
  76 static gboolean match_cylinder(GtkTreeModel *model,
  77                                 GtkTreePath *path,
  78                                 GtkTreeIter *iter,
  79                                 gpointer data)
  80 {
  81         const char *name;
  82         const char *desc = data;
  83         GValue value = {0, };
  84
  85         gtk_tree_model_get_value(model, iter, 0, &value);
  86         name = g_value_get_string(&value);
  87         if (strcmp(desc, name))
  88                 return FALSE;
  89         gtk_combo_box_set_active_iter(cylinder_description, iter);
  90         found_match = 1;
  91         return TRUE;
  92 }
  93
  94 void show_dive_equipment(struct dive *dive)
  95 {
  96         cylinder_t *cyl = &dive->cylinder[0];
  97         const char *desc = cyl->type.description;
  98         GtkTreeModel *model = gtk_combo_box_get_model(cylinder_description);
  99         double o2;
 100
 101         if (!desc)
 102                 desc = "";
 103         gtk_tree_model_foreach(model, match_cylinder, (gpointer)desc);
 104
 105         set_cylinder_spinbuttons(cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 106         o2 = cyl->gasmix.o2.permille / 10.0;
 107         if (!o2)
 108                 o2 = 21.0;
 109         gtk_spin_button_set_value(nitrox_value, o2);
 110 }
 111
 112 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 113 {
 114         GtkWidget *frame, *button;
 115
 116         frame = gtk_frame_new(name);
 117         gtk_container_add(GTK_CONTAINER(vbox), frame);
 118
 119         button = gtk_spin_button_new_with_range(min, max, incr);
 120         gtk_container_add(GTK_CONTAINER(frame), button);
 121
 122         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 123
 124         return button;
 125 }
 126
 127 static void fill_cylinder_info(cylinder_t *cyl, const char *desc, double volume, double pressure, int o2)
 128 {
 129         int mbar, ml;
 130         GtkTreeModel *model;
 131
 132         if (output_units.pressure == PSI)
 133                 pressure /= 14.5037738;
 134
 135         if (pressure && output_units.volume == CUFT) {
 136                 volume *= 28.3168466;   /* CUFT to liter */
 137                 volume /= pressure / 1.01325;
 138         }
 139
 140         ml = volume * 1000 + 0.5;
 141         mbar = pressure * 1000 + 0.5;
 142
 143         if (o2 < 211)
 144                 o2 = 0;
 145         cyl->type.description = desc;
 146         cyl->type.size.mliter = ml;
 147         cyl->type.workingpressure.mbar = mbar;
 148         cyl->gasmix.o2.permille = o2;
 149
 150         /*
 151          * Also, insert it into the model if it doesn't already exist
 152          */
 153         found_match = 0;
 154         model = gtk_combo_box_get_model(cylinder_description);
 155         gtk_tree_model_foreach(model, match_cylinder, (gpointer)desc);
 156
 157         if (!found_match) {
 158                 GtkListStore *store = GTK_LIST_STORE(model);
 159                 GtkTreeIter iter;
 160
 161                 gtk_list_store_append(store, &iter);
 162                 gtk_list_store_set(store, &iter,
 163                         0, desc,
 164                         1, ml,
 165                         2, mbar,
 166                         -1);
 167         }
 168 }
 169
 170 static void record_cylinder_changes(struct dive *dive)
 171 {
 172         const gchar *desc;
 173         GtkComboBox *box = cylinder_description;
 174         double volume, pressure;
 175         int o2;
 176
 177         desc = gtk_combo_box_get_active_text(box);
 178         volume = gtk_spin_button_get_value(cylinder_size);
 179         pressure = gtk_spin_button_get_value(cylinder_pressure);
 180         o2 = gtk_spin_button_get_value(nitrox_value)*10 + 0.5;
 181         fill_cylinder_info(dive->cylinder+0, desc, volume, pressure, o2);
 182 }
 183
 184 void flush_dive_equipment_changes(struct dive *dive)
 185 {
 186         record_cylinder_changes(dive);
 187 }
 188
 189 /* We should take these from the dive list instead */
 190 static struct tank_info {
 191         const char *name;
 192         int size;       /* cuft or mliter depending on psi */
 193         int psi;        /* If zero, size is in mliter */
 194 } tank_info[] = {
 195         { "", 0, 0 },
 196         { "10.0 l", 10000 },
 197         { "11.1 l", 11100 },
 198         { "AL72", 72, 3000 },
 199         { "AL80", 80, 3000 },
 200         { "LP85", 85, 2400 },
 201         { "LP95", 95, 2400 },
 202         { "LP85+", 85, 2640 },
 203         { "LP95+", 95, 2640 },
 204         { "HP100", 100, 3442 },
 205         { "HP119", 119, 3442 },
 206         { NULL, }
 207 };
 208
 209 static void fill_tank_list(GtkListStore *store)
 210 {
 211         GtkTreeIter iter;
 212
 213         struct tank_info *info = tank_info;
 214
 215         while (info->name) {
 216                 int size = info->size;
 217                 int psi = info->psi;
 218                 int mbar = 0, ml = size;
 219
 220                 /* Is it in cuft and psi? */
 221                 if (psi) {
 222                         double bar = 0.0689475729 * psi;
 223                         double airvolume = 28316.8466 * size;
 224                         double atm = bar / 1.01325;
 225
 226                         ml = airvolume / atm + 0.5;
 227                         mbar = bar*1000 + 0.5;
 228                 }
 229
 230                 gtk_list_store_append(store, &iter);
 231                 gtk_list_store_set(store, &iter,
 232                         0, info->name,
 233                         1, ml,
 234                         2, mbar,
 235                         -1);
 236                 info++;
 237         }
 238 }
 239
 240 static void cylinder_widget(GtkWidget *box, int nr, GtkListStore *model)
 241 {
 242         GtkWidget *frame, *hbox;
 243         GtkWidget *widget;
 244         char buffer[80];
 245
 246         snprintf(buffer, sizeof(buffer), "Cylinder %d", nr);
 247         frame = gtk_frame_new(buffer);
 248         gtk_box_pack_start(GTK_BOX(box), frame, FALSE, FALSE, 0);
 249
 250         hbox = gtk_hbox_new(TRUE, 3);
 251         gtk_container_add(GTK_CONTAINER(frame), hbox);
 252
 253         frame = gtk_frame_new("Description");
 254         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, FALSE, 0);
 255
 256         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 257         gtk_container_add(GTK_CONTAINER(frame), widget);
 258
 259         cylinder_description = GTK_COMBO_BOX(widget);
 260         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), NULL);
 261
 262         widget = create_spinbutton(hbox, "Size", 0, 200, 0.1);
 263         cylinder_size = GTK_SPIN_BUTTON(widget);
 264
 265         widget = create_spinbutton(hbox, "Working Pressure", 0, 5000, 1);
 266         cylinder_pressure = GTK_SPIN_BUTTON(widget);
 267
 268         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 269         nitrox_value = GTK_SPIN_BUTTON(widget);
 270         gtk_spin_button_set_range(nitrox_value, 21.0, 100.0);
 271 }
 272
 273 static GtkListStore *create_tank_size_model(void)
 274 {
 275         GtkListStore *model;
 276
 277         model = gtk_list_store_new(3,
 278                 G_TYPE_STRING,          /* Tank name */
 279                 G_TYPE_INT,             /* Tank size in mliter */
 280                 G_TYPE_INT,             /* Tank working pressure in mbar */
 281                 -1);
 282
 283         fill_tank_list(model);
 284         return model;
 285 }
 286
 287 GtkWidget *equipment_widget(void)
 288 {
 289         GtkWidget *vbox;
 290         GtkListStore *model;
 291
 292         vbox = gtk_vbox_new(FALSE, 3);
 293
 294         model = create_tank_size_model();
 295         cylinder_widget(vbox, 0, model);
 296
 297         return vbox;
 298 }