]> git.tdb.fi Git - ext/subsurface.git/blobdiff - equipment.c
Divide the panes evenly in view_three
[ext/subsurface.git] / equipment.c
index 023db75d4a256d1cd6ae0bc4dd7f679abed5894c..b74d85b7b6509ab910620c3c2ffe9d8b2e91f099 100644 (file)
@@ -18,7 +18,7 @@
 #include "display-gtk.h"
 #include "divelist.h"
 
-static GtkListStore *cylinder_model;
+static GtkListStore *cylinder_model, *weightsystem_model;
 
 enum {
        CYL_DESC,
@@ -31,11 +31,20 @@ enum {
        CYL_COLUMNS
 };
 
-static struct {
+enum {
+       WS_DESC,
+       WS_WEIGHT,
+       WS_COLUMNS
+};
+
+struct equipment_list {
        int max_index;
        GtkListStore *model;
        GtkWidget *edit, *add, *del;
-} cylinder_list;
+};
+
+static struct equipment_list cylinder_list, weightsystem_list;
+
 
 struct cylinder_widget {
        int index, changed;
@@ -47,6 +56,14 @@ struct cylinder_widget {
        GtkWidget *o2, *he, *gasmix_button;
 };
 
+struct ws_widget {
+       int index, changed;
+       const char *name;
+       GtkWidget *hbox;
+       GtkComboBox *description;
+       GtkSpinButton *weight;
+};
+
 /* we want bar - so let's not use our unit functions */
 static int convert_pressure(int mbar, double *p)
 {
@@ -64,9 +81,8 @@ static int convert_pressure(int mbar, double *p)
        return decimals;
 }
 
-static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
+static void convert_volume_pressure(int ml, int mbar, double *v, double *p)
 {
-       int decimals = 1;
        double volume, pressure;
 
        volume = ml / 1000.0;
@@ -78,12 +94,23 @@ static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
 
                if (output_units.pressure == PSI) {
                        pressure = mbar_to_PSI(mbar);
-                       decimals = 0;
                } else
                        pressure = mbar / 1000.0;
        }
        *v = volume;
        *p = pressure;
+}
+
+static int convert_weight(int grams, double *m)
+{
+       int decimals = 1; /* not sure - do people do less than whole lbs/kg ? */
+       double weight;
+
+       if (output_units.weight == LBS)
+               weight = grams_to_lbs(grams);
+       else
+               weight = grams / 1000.0;
+       *m = weight;
        return decimals;
 }
 
@@ -119,6 +146,14 @@ static void set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder,
        gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->end), pressure);
 }
 
+static void set_weight_weight_spinbutton(struct ws_widget *ws_widget, int grams)
+{
+       double weight;
+
+       convert_weight(grams, &weight);
+       gtk_spin_button_set_value(ws_widget->weight, weight);
+}
+
 /*
  * The gtk_tree_model_foreach() interface is bad. It could have
  * returned whether the callback ever returned true
@@ -126,10 +161,8 @@ static void set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder,
 static GtkTreeIter *found_match = NULL;
 static GtkTreeIter match_iter;
 
-static gboolean match_cylinder(GtkTreeModel *model,
-                               GtkTreePath *path,
-                               GtkTreeIter *iter,
-                               gpointer data)
+static gboolean match_desc(GtkTreeModel *model,        GtkTreePath *path,
+                       GtkTreeIter *iter, gpointer data)
 {
        int match;
        gchar *name;
@@ -145,7 +178,7 @@ static gboolean match_cylinder(GtkTreeModel *model,
        return match;
 }
 
-static int get_active_cylinder(GtkComboBox *combo_box, GtkTreeIter *iter)
+static int get_active_item(GtkComboBox *combo_box, GtkTreeIter *iter, GtkListStore *model)
 {
        char *desc;
 
@@ -155,7 +188,7 @@ static int get_active_cylinder(GtkComboBox *combo_box, GtkTreeIter *iter)
        desc = gtk_combo_box_get_active_text(combo_box);
 
        found_match = NULL;
-       gtk_tree_model_foreach(GTK_TREE_MODEL(cylinder_model), match_cylinder, (void *)desc);
+       gtk_tree_model_foreach(GTK_TREE_MODEL(model), match_desc, (void *)desc);
 
        g_free(desc);
        if (!found_match)
@@ -175,7 +208,7 @@ static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
        cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 
        /* Did the user set it to some non-standard value? */
-       if (!get_active_cylinder(combo_box, &iter)) {
+       if (!get_active_item(combo_box, &iter, cylinder_model)) {
                cylinder->changed = 1;
                return;
        }
@@ -204,6 +237,43 @@ static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
        set_cylinder_type_spinbuttons(cylinder, ml, mbar);
 }
 
+static void weight_cb(GtkComboBox *combo_box, gpointer data)
+{
+       GtkTreeIter iter;
+       GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
+       int weight;
+       struct ws_widget *ws_widget = data;
+       weightsystem_t *ws = current_dive->weightsystem + ws_widget->index;
+
+       /* Did the user set it to some non-standard value? */
+       if (!get_active_item(combo_box, &iter, weightsystem_model)) {
+               ws_widget->changed = 1;
+               return;
+       }
+
+       /*
+        * We get "change" signal callbacks just because we set
+        * the description by hand. Whatever. So ignore them if
+        * they are no-ops.
+        */
+       if (!ws_widget->changed && ws->description) {
+               int same;
+               char *desc = gtk_combo_box_get_active_text(combo_box);
+
+               same = !strcmp(desc, ws->description);
+               g_free(desc);
+               if (same)
+                       return;
+       }
+       ws_widget->changed = 1;
+
+       gtk_tree_model_get(model, &iter,
+               WS_WEIGHT, &weight,
+               -1);
+
+       set_weight_weight_spinbutton(ws_widget, weight);
+}
+
 static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTreeIter *iter)
 {
        GtkTreeModel *model;
@@ -214,7 +284,7 @@ static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTre
 
        found_match = NULL;
        model = GTK_TREE_MODEL(cylinder_model);
-       gtk_tree_model_foreach(model, match_cylinder, (void *)desc);
+       gtk_tree_model_foreach(model, match_desc, (void *)desc);
 
        if (!found_match) {
                GtkListStore *store = GTK_LIST_STORE(model);
@@ -230,6 +300,27 @@ static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTre
        return found_match;
 }
 
+static GtkTreeIter *add_weightsystem_type(const char *desc, int weight, GtkTreeIter *iter)
+{
+       GtkTreeModel *model;
+
+       found_match = NULL;
+       model = GTK_TREE_MODEL(weightsystem_model);
+       gtk_tree_model_foreach(model, match_desc, (void *)desc);
+
+       if (!found_match) {
+               GtkListStore *store = GTK_LIST_STORE(model);
+
+               gtk_list_store_append(store, iter);
+               gtk_list_store_set(store, iter,
+                       0, desc,
+                       1, weight,
+                       -1);
+               return iter;
+       }
+       return found_match;
+}
+
 /*
  * When adding a dive, we'll add all the pre-existing cylinder
  * information from that dive to our cylinder model.
@@ -258,6 +349,29 @@ static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int
                gtk_combo_box_set_active_iter(cylinder->description, match);
 }
 
+void add_weightsystem_description(weightsystem_t *weightsystem)
+{
+       GtkTreeIter iter;
+       const char *desc;
+       unsigned int weight;
+
+       desc = weightsystem->description;
+       if (!desc)
+               return;
+       weight = weightsystem->weight.grams;
+       add_weightsystem_type(desc, weight, &iter);
+}
+
+static void add_weightsystem(struct ws_widget *ws_widget, const char *desc, int weight)
+{
+       GtkTreeIter iter, *match;
+
+       ws_widget->name = desc;
+       match = add_weightsystem_type(desc, weight, &iter);
+       if (match)
+               gtk_combo_box_set_active_iter(ws_widget->description, match);
+}
+
 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 {
        const char *desc;
@@ -288,13 +402,32 @@ static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
        o2 = cyl->gasmix.o2.permille / 10.0;
        he = cyl->gasmix.he.permille / 10.0;
        if (!o2)
-               o2 = 21.0;
+               o2 = AIR_PERMILLE / 10.0;
        gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
        gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->he), he);
 }
 
-int cylinder_none(cylinder_t *cyl)
+static void show_weightsystem(weightsystem_t *ws, struct ws_widget *weightsystem_widget)
+{
+       const char *desc;
+       int grams;
+
+       /* Don't show uninitialized widgets */
+       if (!weightsystem_widget->description)
+               return;
+
+       desc = ws->description;
+       if (!desc)
+               desc = "";
+       grams = ws->weight.grams;
+       add_weightsystem(weightsystem_widget, desc, grams);
+
+       set_weight_weight_spinbutton(weightsystem_widget, ws->weight.grams);
+}
+
+int cylinder_none(void *_data)
 {
+       cylinder_t *cyl = _data;
        return  !cyl->type.size.mliter &&
                !cyl->type.workingpressure.mbar &&
                !cyl->type.description &&
@@ -306,8 +439,15 @@ int cylinder_none(cylinder_t *cyl)
                !cyl->end.mbar;
 }
 
-static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
+int weightsystem_none(void *_data)
+{
+       weightsystem_t *ws = _data;
+       return !ws->weight.grams && !ws->description;
+}
+
+static void set_one_cylinder(void *_data, GtkListStore *model, GtkTreeIter *iter)
 {
+       cylinder_t *cyl = _data;
        unsigned int start, end;
 
        start = cyl->start.mbar ? : cyl->sample_start.mbar;
@@ -323,36 +463,70 @@ static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, Gt
                -1);
 }
 
-void show_dive_equipment(struct dive *dive)
+static void set_one_weightsystem(void *_data, GtkListStore *model, GtkTreeIter *iter)
+{
+       weightsystem_t *ws = _data;
+
+       gtk_list_store_set(model, iter,
+               WS_DESC, ws->description ? : "unspecified",
+               WS_WEIGHT, ws->weight.grams,
+               -1);
+}
+
+static void *cyl_ptr(struct dive *dive, int idx)
 {
-       int i, max;
+       if (idx < 0 || idx >= MAX_CYLINDERS)
+               return NULL;
+       return &dive->cylinder[idx];
+}
+
+static void *ws_ptr(struct dive *dive, int idx)
+{
+       if (idx < 0 || idx >= MAX_WEIGHTSYSTEMS)
+               return NULL;
+       return &dive->weightsystem[idx];
+}
+
+static void show_equipment(struct dive *dive, int max,
+                       struct equipment_list *equipment_list,
+                       void*(*ptr_function)(struct dive*, int),
+                       int(*none_function)(void *),
+                       void(*set_one_function)(void*, GtkListStore*, GtkTreeIter *))
+{
+       int i, used;
+       void *data;
        GtkTreeIter iter;
-       GtkListStore *model;
+       GtkListStore *model = equipment_list->model;
 
-       model = cylinder_list.model;
        gtk_list_store_clear(model);
-       max = MAX_CYLINDERS;
+       used = max;
        do {
-               cylinder_t *cyl = &dive->cylinder[max-1];
-
-               if (!cylinder_none(cyl))
+               data = ptr_function(dive, used-1);
+               if (!none_function(data))
                        break;
-       } while (--max);
-
-       cylinder_list.max_index = max;
+       } while (--used);
 
-       gtk_widget_set_sensitive(cylinder_list.edit, 0);
-       gtk_widget_set_sensitive(cylinder_list.del, 0);
-       gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
+       equipment_list->max_index = used;
 
-       for (i = 0; i < max; i++) {
-               cylinder_t *cyl = dive->cylinder+i;
+       gtk_widget_set_sensitive(equipment_list->edit, 0);
+       gtk_widget_set_sensitive(equipment_list->del, 0);
+       gtk_widget_set_sensitive(equipment_list->add, used < max);
 
+       for (i = 0; i < used; i++) {
+               data = ptr_function(dive, i);
                gtk_list_store_append(model, &iter);
-               set_one_cylinder(i, cyl, model, &iter);
+               set_one_function(data, model, &iter);
        }
 }
 
+void show_dive_equipment(struct dive *dive)
+{
+       show_equipment(dive, MAX_CYLINDERS, &cylinder_list,
+               &cyl_ptr, &cylinder_none, &set_one_cylinder);
+       show_equipment(dive, MAX_WEIGHTSYSTEMS, &weightsystem_list,
+               &ws_ptr, &weightsystem_none, &set_one_weightsystem);
+}
+
 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 {
        GtkWidget *frame, *hbox, *button;
@@ -443,6 +617,29 @@ static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cyl
        fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2, he);
 }
 
+static void record_weightsystem_changes(weightsystem_t *ws, struct ws_widget *weightsystem_widget)
+{
+       const gchar *desc;
+       GtkComboBox *box;
+       int grams;
+       double value;
+
+       /* Ignore uninitialized cylinder widgets */
+       box = weightsystem_widget->description;
+       if (!box)
+               return;
+
+       desc = gtk_combo_box_get_active_text(box);
+       value = gtk_spin_button_get_value(weightsystem_widget->weight);
+
+       if (output_units.weight == LBS)
+               grams = lbs_to_grams(value);
+       else
+               grams = value * 1000;
+       ws->weight.grams = grams;
+       ws->description = desc;
+}
+
 /*
  * We hardcode the most common standard cylinders,
  * we should pick up any other names from the dive
@@ -467,10 +664,10 @@ static struct tank_info {
        { "AL100", .cuft = 100, .psi = 3300 },
 
        /* Somewhat common LP steel cylinders */
-       { "LP85",  .cuft =  85, 2640 },
-       { "LP95",  .cuft =  95, 2640 },
-       { "LP108", .cuft = 108, 2640 },
-       { "LP121", .cuft = 121, 2640 },
+       { "LP85",  .cuft =  85, .psi = 2640 },
+       { "LP95",  .cuft =  95, .psi = 2640 },
+       { "LP108", .cuft = 108, .psi = 2640 },
+       { "LP121", .cuft = 121, .psi = 2640 },
 
        /* Somewhat common HP steel cylinders */
        { "HP65",  .cuft =  65, .psi = 3442 },
@@ -499,23 +696,29 @@ static void fill_tank_list(GtkListStore *store)
        GtkTreeIter iter;
        struct tank_info *info = tank_info;
 
-       while (info->name) {
+       for (info = tank_info ; info->name; info++) {
                int ml = info->ml;
                int cuft = info->cuft;
                int psi = info->psi;
                int mbar;
                double bar = info->bar;
 
+               if (psi && bar)
+                       goto bad_tank_info;
+               if (ml && cuft)
+                       goto bad_tank_info;
+               if (cuft && !psi)
+                       goto bad_tank_info;
+
                /* Is it in cuft and psi? */
-               if (psi) {
+               if (psi)
                        bar = psi_to_bar(psi);
 
-                       if (cuft) {
-                               double airvolume = cuft_to_l(cuft) * 1000.0;
-                               double atm = bar_to_atm(bar);
+               if (cuft) {
+                       double airvolume = cuft_to_l(cuft) * 1000.0;
+                       double atm = bar_to_atm(bar);
 
-                               ml = airvolume / atm + 0.5;
-                       }
+                       ml = airvolume / atm + 0.5;
                }
 
                mbar = bar * 1000 + 0.5;
@@ -526,6 +729,41 @@ static void fill_tank_list(GtkListStore *store)
                        1, ml,
                        2, mbar,
                        -1);
+               continue;
+
+bad_tank_info:
+               fprintf(stderr, "Bad tank info for '%s'\n", info->name);
+       }
+}
+
+/*
+ * We hardcode the most common weight system types
+ * This is a bit odd as the weight system types don't usually encode weight
+ */
+static struct ws_info {
+       const char *name;
+       int grams;
+} ws_info[100] = {
+       /* Need an empty entry for the no weight system case */
+       { "", },
+       { "integrated", 0 },
+       { "belt", 0 },
+       { "ankle", 0 },
+       { "bar", 0 },
+       { "clip-on", 0 },
+};
+
+static void fill_ws_list(GtkListStore *store)
+{
+       GtkTreeIter iter;
+       struct ws_info *info = ws_info;
+
+       while (info->name) {
+               gtk_list_store_append(store, &iter);
+               gtk_list_store_set(store, &iter,
+                       0, info->name,
+                       1, info->grams,
+                       -1);
                info++;
        }
 }
@@ -671,6 +909,63 @@ static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, G
        g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(gasmix_cb), cylinder);
 }
 
+static gboolean weight_completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct ws_widget *ws_widget)
+{
+       const char *desc;
+       unsigned int weight;
+
+       gtk_tree_model_get(model, iter, WS_DESC, &desc, WS_WEIGHT, &weight, -1);
+       add_weightsystem(ws_widget, desc, weight);
+       return TRUE;
+}
+
+static void weight_activate_cb(GtkComboBox *combo_box, gpointer data)
+{
+       struct ws_widget *ws_widget = data;
+       weight_cb(ws_widget->description, data);
+}
+
+static void ws_widget(GtkWidget *vbox, struct ws_widget *ws_widget, GtkListStore *model)
+{
+       GtkWidget *frame, *hbox;
+       GtkEntryCompletion *completion;
+       GtkWidget *widget;
+       GtkEntry *entry;
+
+       /*
+        * weight_system: description and weight
+        */
+       frame = gtk_frame_new("Weight");
+
+       hbox = gtk_hbox_new(FALSE, 3);
+       gtk_container_add(GTK_CONTAINER(frame), hbox);
+
+       widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
+       gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
+
+       ws_widget->description = GTK_COMBO_BOX(widget);
+       g_signal_connect(widget, "changed", G_CALLBACK(weight_cb), ws_widget);
+
+       entry = GTK_ENTRY(GTK_BIN(widget)->child);
+       g_signal_connect(entry, "activate", G_CALLBACK(weight_activate_cb), ws_widget);
+
+       completion = gtk_entry_completion_new();
+       gtk_entry_completion_set_text_column(completion, 0);
+       gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
+       g_signal_connect(completion, "match-selected", G_CALLBACK(weight_completion_cb), ws_widget);
+       gtk_entry_set_completion(entry, completion);
+
+       hbox = gtk_hbox_new(FALSE, 3);
+       gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
+       gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
+
+       if ( output_units.weight == KG)
+               widget = create_spinbutton(hbox, "kg", 0, 50, 0.5);
+       else
+               widget = create_spinbutton(hbox, "lbs", 0, 110, 1);
+       ws_widget->weight = GTK_SPIN_BUTTON(widget);
+}
+
 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 {
        int success;
@@ -713,6 +1008,47 @@ static int edit_cylinder_dialog(int index, cylinder_t *cyl)
        return success;
 }
 
+static int edit_weightsystem_dialog(int index, weightsystem_t *ws)
+{
+       int success;
+       GtkWidget *dialog, *vbox;
+       struct ws_widget weightsystem_widget;
+       struct dive *dive;
+
+       weightsystem_widget.index = index;
+       weightsystem_widget.changed = 0;
+
+       dive = current_dive;
+       if (!dive)
+               return 0;
+       *ws = dive->weightsystem[index];
+
+       dialog = gtk_dialog_new_with_buttons("Weight System",
+               GTK_WINDOW(main_window),
+               GTK_DIALOG_DESTROY_WITH_PARENT,
+               GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
+               GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
+               NULL);
+
+       vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
+       ws_widget(vbox, &weightsystem_widget, weightsystem_model);
+
+       show_weightsystem(ws, &weightsystem_widget);
+
+       gtk_widget_show_all(dialog);
+       success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
+       if (success) {
+               record_weightsystem_changes(ws, &weightsystem_widget);
+               dive->weightsystem[index] = *ws;
+               mark_divelist_changed(TRUE);
+               flush_divelist(dive);
+       }
+
+       gtk_widget_destroy(dialog);
+
+       return success;
+}
+
 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 {
        int *p, index;
@@ -743,7 +1079,7 @@ static void edit_cb(GtkButton *button, GtkTreeView *tree_view)
        if (!edit_cylinder_dialog(index, &cyl))
                return;
 
-       set_one_cylinder(index, &cyl, model, &iter);
+       set_one_cylinder(&cyl, model, &iter);
        repaint_dive();
 }
 
@@ -759,7 +1095,7 @@ static void add_cb(GtkButton *button, GtkTreeView *tree_view)
                return;
 
        gtk_list_store_append(model, &iter);
-       set_one_cylinder(index, &cyl, model, &iter);
+       set_one_cylinder(&cyl, model, &iter);
 
        selection = gtk_tree_view_get_selection(tree_view);
        gtk_tree_selection_select_iter(selection, &iter);
@@ -805,6 +1141,86 @@ static void del_cb(GtkButton *button, GtkTreeView *tree_view)
        gtk_widget_set_sensitive(cylinder_list.add, 1);
 }
 
+static void ws_edit_cb(GtkButton *button, GtkTreeView *tree_view)
+{
+       int index;
+       GtkTreeIter iter;
+       GtkListStore *model = weightsystem_list.model;
+       GtkTreeSelection *selection;
+       weightsystem_t ws;
+
+       selection = gtk_tree_view_get_selection(tree_view);
+
+       /* Nothing selected? This shouldn't happen, since the button should be inactive */
+       if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
+               return;
+
+       index = get_model_index(model, &iter);
+       if (!edit_weightsystem_dialog(index, &ws))
+               return;
+
+       set_one_weightsystem(&ws, model, &iter);
+       repaint_dive();
+}
+
+static void ws_add_cb(GtkButton *button, GtkTreeView *tree_view)
+{
+       int index = weightsystem_list.max_index;
+       GtkTreeIter iter;
+       GtkListStore *model = weightsystem_list.model;
+       GtkTreeSelection *selection;
+       weightsystem_t ws;
+
+       if (!edit_weightsystem_dialog(index, &ws))
+               return;
+
+       gtk_list_store_append(model, &iter);
+       set_one_weightsystem(&ws, model, &iter);
+
+       selection = gtk_tree_view_get_selection(tree_view);
+       gtk_tree_selection_select_iter(selection, &iter);
+
+       weightsystem_list.max_index++;
+       gtk_widget_set_sensitive(weightsystem_list.add, weightsystem_list.max_index < MAX_WEIGHTSYSTEMS);
+}
+
+static void ws_del_cb(GtkButton *button, GtkTreeView *tree_view)
+{
+       int index, nr;
+       GtkTreeIter iter;
+       GtkListStore *model = weightsystem_list.model;
+       GtkTreeSelection *selection;
+       struct dive *dive;
+       weightsystem_t *ws;
+
+       selection = gtk_tree_view_get_selection(tree_view);
+
+       /* Nothing selected? This shouldn't happen, since the button should be inactive */
+       if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
+               return;
+
+       index = get_model_index(model, &iter);
+
+       dive = current_dive;
+       if (!dive)
+               return;
+       ws = dive->weightsystem + index;
+       nr = weightsystem_list.max_index - index - 1;
+
+       gtk_list_store_remove(model, &iter);
+
+       weightsystem_list.max_index--;
+       memmove(ws, ws+1, nr*sizeof(*ws));
+       memset(ws+nr, 0, sizeof(*ws));
+
+       mark_divelist_changed(TRUE);
+       flush_divelist(dive);
+
+       gtk_widget_set_sensitive(weightsystem_list.edit, 0);
+       gtk_widget_set_sensitive(weightsystem_list.del, 0);
+       gtk_widget_set_sensitive(weightsystem_list.add, 1);
+}
+
 static GtkListStore *create_tank_size_model(void)
 {
        GtkListStore *model;
@@ -819,6 +1235,19 @@ static GtkListStore *create_tank_size_model(void)
        return model;
 }
 
+static GtkListStore *create_weightsystem_model(void)
+{
+       GtkListStore *model;
+
+       model = gtk_list_store_new(2,
+               G_TYPE_STRING,          /* Weightsystem description */
+               G_TYPE_INT,             /* Weight in grams */
+               -1);
+
+       fill_ws_list(model);
+       return model;
+}
+
 static void size_data_func(GtkTreeViewColumn *col,
                           GtkCellRenderer *renderer,
                           GtkTreeModel *model,
@@ -838,6 +1267,26 @@ static void size_data_func(GtkTreeViewColumn *col,
        g_object_set(renderer, "text", buffer, NULL);
 }
 
+static void weight_data_func(GtkTreeViewColumn *col,
+                          GtkCellRenderer *renderer,
+                          GtkTreeModel *model,
+                          GtkTreeIter *iter,
+                          gpointer data)
+{
+       int idx = (long)data;
+       int grams, decimals;
+       double value;
+       char buffer[10];
+
+       gtk_tree_model_get(model, iter, idx, &grams, -1);
+       decimals = convert_weight(grams, &value);
+       if (grams)
+               snprintf(buffer, sizeof(buffer), "%.*f", decimals, value);
+       else
+               strcpy(buffer, "unkn");
+       g_object_set(renderer, "text", buffer, NULL);
+}
+
 static void pressure_data_func(GtkTreeViewColumn *col,
                           GtkCellRenderer *renderer,
                           GtkTreeModel *model,
@@ -876,14 +1325,14 @@ static void percentage_data_func(GtkTreeViewColumn *col,
        g_object_set(renderer, "text", buffer, NULL);
 }
 
-static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
+static void selection_cb(GtkTreeSelection *selection, struct equipment_list *list)
 {
        GtkTreeIter iter;
        int selected;
 
        selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
-       gtk_widget_set_sensitive(cylinder_list.edit, selected);
-       gtk_widget_set_sensitive(cylinder_list.del, selected);
+       gtk_widget_set_sensitive(list->edit, selected);
+       gtk_widget_set_sensitive(list->del, selected);
 }
 
 static void row_activated_cb(GtkTreeView *tree_view,
@@ -894,6 +1343,14 @@ static void row_activated_cb(GtkTreeView *tree_view,
        edit_cb(NULL, tree_view);
 }
 
+static void ws_row_activated_cb(GtkTreeView *tree_view,
+                       GtkTreePath *path,
+                       GtkTreeViewColumn *column,
+                       GtkTreeModel *model)
+{
+       ws_edit_cb(NULL, tree_view);
+}
+
 GtkWidget *cylinder_list_widget(void)
 {
        GtkListStore *model = cylinder_list.model;
@@ -907,7 +1364,7 @@ GtkWidget *cylinder_list_widget(void)
 
        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
        gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
-       g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
+       g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), &cylinder_list);
 
        g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
                                          "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
@@ -923,6 +1380,31 @@ GtkWidget *cylinder_list_widget(void)
        return tree_view;
 }
 
+GtkWidget *weightsystem_list_widget(void)
+{
+       GtkListStore *model = weightsystem_list.model;
+       GtkWidget *tree_view;
+       GtkTreeSelection *selection;
+
+       tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
+       gtk_widget_set_can_focus(tree_view, FALSE);
+       g_signal_connect(tree_view, "row-activated", G_CALLBACK(ws_row_activated_cb), model);
+
+       selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
+       gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
+       g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), &weightsystem_list);
+
+       g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
+                                         "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
+                                         NULL);
+
+       tree_view_column(tree_view, WS_DESC, "Type", NULL, ALIGN_LEFT | UNSORTABLE);
+       tree_view_column(tree_view, WS_WEIGHT, "weight",
+                       weight_data_func, ALIGN_RIGHT | UNSORTABLE);
+
+       return tree_view;
+}
+
 static GtkWidget *cylinder_list_create(void)
 {
        GtkListStore *model;
@@ -940,6 +1422,18 @@ static GtkWidget *cylinder_list_create(void)
        return cylinder_list_widget();
 }
 
+static GtkWidget *weightsystem_list_create(void)
+{
+       GtkListStore *model;
+
+       model = gtk_list_store_new(WS_COLUMNS,
+               G_TYPE_STRING,          /* WS_DESC: utf8 */
+               G_TYPE_INT              /* WS_WEIGHT: grams */
+               );
+       weightsystem_list.model = model;
+       return weightsystem_list_widget();
+}
+
 GtkWidget *equipment_widget(void)
 {
        GtkWidget *vbox, *hbox, *frame, *framebox, *tree_view;
@@ -955,7 +1449,6 @@ GtkWidget *equipment_widget(void)
         * another dive.
         */
        cylinder_model = create_tank_size_model();
-
        tree_view = cylinder_list_create();
 
        hbox = gtk_hbox_new(FALSE, 3);
@@ -990,5 +1483,40 @@ GtkWidget *equipment_widget(void)
        g_signal_connect(add, "clicked", G_CALLBACK(add_cb), tree_view);
        g_signal_connect(del, "clicked", G_CALLBACK(del_cb), tree_view);
 
+       hbox = gtk_hbox_new(FALSE, 3);
+       gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
+
+       weightsystem_model = create_weightsystem_model();
+       tree_view = weightsystem_list_create();
+
+       frame = gtk_frame_new("Weight");
+       gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
+
+       framebox = gtk_vbox_new(FALSE, 3);
+       gtk_container_add(GTK_CONTAINER(frame), framebox);
+
+       hbox = gtk_hbox_new(FALSE, 3);
+       gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
+
+       gtk_box_pack_start(GTK_BOX(hbox), tree_view, TRUE, FALSE, 3);
+
+       hbox = gtk_hbox_new(TRUE, 3);
+       gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
+
+       edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
+       add = gtk_button_new_from_stock(GTK_STOCK_ADD);
+       del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
+       gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
+       gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
+       gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
+
+       weightsystem_list.edit = edit;
+       weightsystem_list.add = add;
+       weightsystem_list.del = del;
+
+       g_signal_connect(edit, "clicked", G_CALLBACK(ws_edit_cb), tree_view);
+       g_signal_connect(add, "clicked", G_CALLBACK(ws_add_cb), tree_view);
+       g_signal_connect(del, "clicked", G_CALLBACK(ws_del_cb), tree_view);
+
        return vbox;
 }