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Sourcecode: gretl version File versions

treeutils.c

/*
 *  Copyright (c) by Allin Cottrell
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

/* treeutils.c for gretl */

#include "gretl.h"
#include "treeutils.h"

/* these live in dialogs.c */
extern GtkWidget *active_edit_id; 
extern GtkWidget *active_edit_name;
extern GtkWidget *active_edit_text;

static gint list_alpha_compare (GtkTreeModel *model, 
                        GtkTreeIter *a, GtkTreeIter *b,
                        gpointer p);
static gint list_id_compare (GtkTreeModel *model, 
                       GtkTreeIter *a, GtkTreeIter *b,
                       gpointer p);

/* ......................................................... */

static gboolean no_select_row_zero (GtkTreeSelection *selection,
                            GtkTreeModel *model,
                            GtkTreePath *path,
                            gboolean path_currently_selected,
                            gpointer data)
{
    if (tree_path_get_row_number(path) == 0) return FALSE;
    return TRUE;
}

/* ......................................................... */

static void my_gtk_entry_append_text (GtkEntry *entry, gchar *add)
{
    const gchar *old = gtk_entry_get_text(entry);
    gchar *new = g_strdup_printf("%s%s", old, add);
    
    gtk_entry_set_text(entry, new);
    gtk_editable_set_position(GTK_EDITABLE(entry), -1);
    g_free(new);
}

/* ......................................................... */

static void update_dialogs_from_varclick (int active_var)
{
    if (active_edit_id != NULL) {
      const gchar *edttext;
      gchar addvar[9];

      edttext = gtk_entry_get_text(GTK_ENTRY(active_edit_id));
      if (*edttext != '\0') {
          sprintf(addvar, " %d", active_var);
      } else {
          sprintf(addvar, "%d", active_var);
      }
      my_gtk_entry_append_text(GTK_ENTRY(active_edit_id), addvar);
    } else if (active_edit_name != NULL) {
      const gchar *edttext;

      edttext = gtk_entry_get_text(GTK_ENTRY(active_edit_name));
      my_gtk_entry_append_text(GTK_ENTRY(active_edit_name), 
                         datainfo->varname[active_var]);
      my_gtk_entry_append_text(GTK_ENTRY(active_edit_name), " ");
    } else if (active_edit_text != NULL) {
      GtkTextBuffer *tbuf;

      tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(active_edit_text));
      if (tbuf != NULL) {
          gtk_text_buffer_insert_at_cursor(tbuf, 
                                   datainfo->varname[active_var], 
                                   -1);
      }
    }  
}

/* .................................................................. */

gboolean main_varclick (GtkWidget *widget, GdkEventButton *event,
                  windata_t *win)
{
    GtkTreeView *view = GTK_TREE_VIEW(win->listbox);
    GtkTreePath *path;
    gint row = 0;

    if (gtk_tree_view_get_path_at_pos(view, event->x, event->y, &path, 
                              NULL, NULL, NULL)) {
      row = tree_path_get_row_number(path);

      if (row != 0) {
          gchar *varnum;

          g_object_set_data(G_OBJECT(win->listbox), "active_row",
                        GINT_TO_POINTER(row));
          tree_view_get_string(view, row, 0, &varnum);
          win->active_var = atoi(varnum);
          g_free(varnum);
          update_dialogs_from_varclick(win->active_var);
      }
      gtk_tree_path_free(path);
    } else {
      /* clicked below the lines representing variables */
      return FALSE;
    }

    return (row == 0);
}

/* .................................................................. */

GtkWidget *list_box_create (windata_t *win, GtkBox *box, 
                      gint ncols, int hidden_col, 
                      const char *titles[]) 
{
    GtkListStore *store; 
    GtkWidget *view, *scroller;
    GtkCellRenderer *renderer;
    GtkTreeViewColumn *column;
    GtkTreeSelection *select;
    GType *types;
    gint i, totcols = ncols;

    if (hidden_col) totcols++;

    types = mymalloc(totcols * sizeof *types);
    if (types == NULL) return NULL;

    for (i=0; i<ncols; i++) types[i] = G_TYPE_STRING;
    if (hidden_col) {
      types[ncols] = G_TYPE_STRING;
    }

    store = gtk_list_store_newv (totcols, types);
    free(types);

    view = gtk_tree_view_new_with_model (GTK_TREE_MODEL(store));
    g_object_unref (G_OBJECT(store));

    gtk_tree_view_set_rules_hint (GTK_TREE_VIEW(view), TRUE);

    renderer = gtk_cell_renderer_text_new ();
    g_object_set (renderer, "ypad", 0, NULL);

    for (i=0; i<ncols; i++) {
      column = gtk_tree_view_column_new_with_attributes (titles[i],
                                             renderer,
                                             "text", i, 
                                             NULL);
      gtk_tree_view_append_column (GTK_TREE_VIEW(view), column);
      if (win != mdata) {
          g_object_set (G_OBJECT (column), "resizable", TRUE, NULL);
      }     
    }

    if (hidden_col) {
      column = gtk_tree_view_column_new_with_attributes (NULL,
                                             renderer,
                                             "text", i, 
                                             NULL);
      gtk_tree_view_append_column (GTK_TREE_VIEW(view), column);
      gtk_tree_view_column_set_visible(column, FALSE);
    }

    /* set the selection properties on the tree view */
    select = gtk_tree_view_get_selection (GTK_TREE_VIEW(view));

    if (win == mdata) { /* main window */
      gtk_tree_selection_set_mode (select, GTK_SELECTION_EXTENDED);
      gtk_tree_selection_set_select_function (select, 
                                    (GtkTreeSelectionFunc)
                                    no_select_row_zero,
                                    NULL, NULL);

      gtk_widget_set_events (view, GDK_POINTER_MOTION_MASK 
                         | GDK_POINTER_MOTION_HINT_MASK);

        g_signal_connect (G_OBJECT(view), "motion_notify_event",
                          G_CALLBACK(listbox_drag), NULL);

    } else {
      gtk_tree_selection_set_mode (select, GTK_SELECTION_SINGLE);
      g_signal_connect (G_OBJECT(select), "changed",
                    G_CALLBACK(listbox_select_row),
                    win);
    }

    g_signal_connect (G_OBJECT(view), "key_press_event",
                  G_CALLBACK(catch_listbox_key),
                  win);

    g_signal_connect (G_OBJECT(view), "button_press_event",
                  G_CALLBACK(listbox_double_click),
                  win);

    /* set sort properties on the tree model */
    gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE(store), 0, 
                             (GtkTreeIterCompareFunc) 
                             list_id_compare,
                             NULL, NULL);

    gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE(store), 1, 
                             (GtkTreeIterCompareFunc) 
                             list_alpha_compare,
                             NULL, NULL);

    scroller = gtk_scrolled_window_new (NULL, NULL);

    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scroller),
                            GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scroller),
                                         GTK_SHADOW_IN);    

    gtk_container_add (GTK_CONTAINER(scroller), view);

    gtk_box_pack_start (box, scroller, TRUE, TRUE, TRUE);

    gtk_widget_show(view);
    gtk_widget_show(scroller);

    return view;
}

/* .................................................................. */

void tree_view_get_string (GtkTreeView *view, int row, int col, gchar **val)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    gchar *path;

    model = gtk_tree_view_get_model (view);
    path = g_strdup_printf("%d", row);
    gtk_tree_model_get_iter_from_string (model, &iter, path);
    gtk_tree_model_get (model, &iter, col, val, -1);
    g_free(path);
}

/* .................................................................. */

int tree_path_get_row_number (GtkTreePath *path)
{
    return gtk_tree_path_get_indices(path)[0];
}

/* .................................................................. */

static gint list_alpha_compare (GtkTreeModel *model, 
                        GtkTreeIter *a, GtkTreeIter *b,
                        gpointer p)
{
    gchar *vname_a, *vname_b;
    gint ret;

    gtk_tree_model_get (model, a, 1, &vname_a, -1);
    gtk_tree_model_get (model, b, 1, &vname_b, -1);

    if (strcmp(vname_a, "const") == 0) ret = 0;
    else if (strcmp(vname_b, "const") == 0) ret = 1;
    else ret = strcmp(vname_a, vname_b);

    g_free(vname_a);
    g_free(vname_b);
    
    return ret;
}

/* .................................................................. */

static gint list_id_compare (GtkTreeModel *model, 
                       GtkTreeIter *a, GtkTreeIter *b,
                       gpointer p)
{
    gchar *vnum_a, *vnum_b;
    gint ret;

    gtk_tree_model_get (model, a, 0, &vnum_a, -1);
    gtk_tree_model_get (model, b, 0, &vnum_b, -1);

    ret = strcmp(vnum_a, vnum_b);

    g_free(vnum_a);
    g_free(vnum_b);
    
    return ret;
}

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