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support.c

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>

#include <gtk/gtk.h>

#include "support.h"

GtkWidget *lookup_widget(GtkWidget * widget, const gchar * widget_name)
{
    GtkWidget *parent, *found_widget;

    for (;;) {
        if (GTK_IS_MENU(widget))
            parent = gtk_menu_get_attach_widget(GTK_MENU(widget));
        else
            parent = widget->parent;
        if (!parent)
            parent = (GtkWidget *) g_object_get_data(G_OBJECT(widget), "GladeParentKey");
        if (parent == NULL)
            break;
        widget = parent;
    }

    found_widget = (GtkWidget *) g_object_get_data(G_OBJECT(widget), widget_name);
    if (!found_widget)
        g_warning("Widget not found: %s", widget_name);
    return found_widget;
}

static GList *pixmaps_directories = NULL;

/* Use this function to set the directory containing installed pixmaps. */
void add_pixmap_directory(const gchar * directory)
{
    pixmaps_directories = g_list_prepend(pixmaps_directories, g_strdup(directory));
}

/* This is an internally used function to find pixmap files. */
static gchar *find_pixmap_file(const gchar * filename)
{
    GList *elem;

    /* We step through each of the pixmaps directory to find it. */
    elem = pixmaps_directories;
    while (elem) {
        gchar *pathname = g_strdup_printf("%s%s%s", (gchar *) elem->data,
                                          G_DIR_SEPARATOR_S, filename);
        if (g_file_test(pathname, G_FILE_TEST_EXISTS))
            return pathname;
        g_free(pathname);
        elem = elem->next;
    }
    return NULL;
}

/* This is an internally used function to create pixmaps. */
GtkWidget *create_pixmap(GtkWidget * widget, const gchar * filename)
{
    gchar *pathname = NULL;
    GtkWidget *pixmap;

    if (!filename || !filename[0])
        return gtk_image_new();

    pathname = find_pixmap_file(filename);

    if (!pathname) {
        g_warning(_("Couldn't find pixmap file: %s"), filename);
        return gtk_image_new();
    }
    pixmap = gtk_image_new_from_file(pathname);
    g_free(pathname);
    return pixmap;
}

/* This is an internally used function to create pixmaps. */
GdkPixbuf *create_pixbuf(const gchar * filename, int width, int height)
{
    gchar *pathname = NULL;
    GdkPixbuf *pixbuf;
    GError *error = NULL;

    if (!filename || !filename[0])
        return NULL;

    pathname = find_pixmap_file(filename);

    if (!pathname) {
        g_warning(_("Couldn't find pixmap file: %s"), filename);
        return NULL;
    }

    if (width != 0 && height != 0)
        pixbuf = gdk_pixbuf_new_from_file_at_size(pathname, width, height, &error);
    else
        pixbuf = gdk_pixbuf_new_from_file(pathname, &error);
    if (!pixbuf) {
        fprintf(stderr, "Failed to load pixbuf file: %s: %s\n", pathname, error->message);
        g_error_free(error);
    }
    g_free(pathname);
    return pixbuf;
}

/* This is used to set ATK action descriptions. */
void glade_set_atk_action_description(AtkAction * action, const gchar * action_name, const gchar * description)
{
    gint n_actions, i;

    n_actions = atk_action_get_n_actions(action);
    for (i = 0; i < n_actions; i++) {
        if (!strcmp(atk_action_get_name(action, i), action_name))
            atk_action_set_description(action, i, description);
    }
}

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