gseisviewaxistraces.c

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        } else if (private->str_values) {
            guint i, length, max_length = 0, max_index = 0;
            gchar *label;

            for (i = 0; i < private->str_values->len; i++) {
                label = (gchar*)g_ptr_array_index (private->str_values, i);
                length = 0;
                while (*(label++))
                    length++;
                if (length > max_length) {
                    max_length = length;
                    max_index = i;
                }
            }
            private->label_max_strlen = max_length;
            layout = gtk_widget_create_pango_layout (seis_view_gl, (const gchar*)g_ptr_array_index (private->str_values, max_index));
            pango_layout_set_font_description (layout, private->font_desc);
            pango_layout_get_pixel_size (layout, &private->text_width_screen, &private->text_height_screen);
            g_object_unref (layout);
        }
        G_SEIS_VIEW_AXIS (axis)->size_pixels = private->text_height_screen * 1.775;
    }

    private->redisplay = TRUE;

    if (private->rendering_mutex)
        g_mutex_unlock (private->rendering_mutex);
}

enum {
    PROP_0,
    PROP_VALUES,
    PROP_STR_VALUES,
    PROP_FORMAT,
    PROP_PRECISION,
    PROP_FONT,
    PROP_FG_COLOR,
    PROP_BG_COLOR
};

static void g_seis_view_axis_traces_set_property (GObject *object, guint prop_id,
                                                  const GValue *value, GParamSpec *pspec) {
    GSeisViewAxisTraces *self = G_SEIS_VIEW_AXIS_TRACES (object);
    GSeisViewAxisTracesPrivate *private = G_SEIS_VIEW_AXIS_TRACES_GET_PRIVATE (self);

    switch (prop_id) {
        case PROP_VALUES:
            g_seis_view_axis_traces_set_values (self, private->format, (GArray*)g_value_get_pointer (value));
            break;
        case PROP_STR_VALUES:
            g_seis_view_axis_traces_set_str_values (self, (GPtrArray*)g_value_get_pointer (value));
            break;
        case PROP_FORMAT:
            private->format = g_value_get_enum (value);
            g_object_notify (object, "format");
            break;
        case PROP_PRECISION:
            g_seis_view_axis_traces_set_precision (self, g_value_get_uchar (value));
            break;
        case PROP_FONT:
            g_seis_view_axis_traces_set_font (self, g_value_get_string (value));
            break;
        case PROP_FG_COLOR:
            g_seis_view_axis_traces_set_fg_color (self, (GSeisColor*)g_value_get_boxed (value));
            break;
        case PROP_BG_COLOR:
            g_seis_view_axis_traces_set_bg_color (self, (GSeisColor*)g_value_get_boxed (value));
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
            break;
    }
}

static void g_seis_view_axis_traces_get_property (GObject *object, guint prop_id,
                                                  GValue *value, GParamSpec *pspec) {
    GSeisViewAxisTraces *self = G_SEIS_VIEW_AXIS_TRACES (object);
    GSeisViewAxisTracesPrivate *private = G_SEIS_VIEW_AXIS_TRACES_GET_PRIVATE (self);

    switch (prop_id) {
        case PROP_VALUES:
            g_value_set_pointer (value, private->values);
        case PROP_STR_VALUES:
            g_value_set_pointer (value, private->str_values);
        case PROP_FORMAT:
            g_value_set_enum (value, private->format);
            break;
        case PROP_PRECISION:
            g_value_set_uchar (value, private->precision);
            break;
        case PROP_FONT:
            g_value_set_string (value, private->font_name);
            break;
        case PROP_FG_COLOR:
            g_value_set_boxed (value, &private->fg_color);
            break;
        case PROP_BG_COLOR:
            g_value_set_boxed (value, &private->bg_color);
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
            break;
    }
}

static GType g_seis_view_axis_traces_format_get_type (void) {
    static GType etype = 0;
    if (etype == 0) {
        static const GEnumValue values[] = {
           { G_SEIS_VIEW_AXIS_TRACES_INTEGER, "G_SEIS_VIEW_AXIS_TRACES_INTEGER", "integer" },
           { G_SEIS_VIEW_AXIS_TRACES_FLOAT, "G_SEIS_VIEW_AXIS_TRACES_FLOAT", "float" },
           { 0, NULL, NULL }
        };
        etype = g_enum_register_static ("GSeisViewAxisTracesFormat", values);
    }
    return etype;
}

static void g_seis_view_axis_traces_init (GSeisViewAxisTraces *self) {
    GSeisViewAxisTracesPrivate *private = G_SEIS_VIEW_AXIS_TRACES_GET_PRIVATE (self);

    private->format = G_SEIS_VIEW_AXIS_TRACES_FLOAT;
    private->label_max_strlen = 0;
    private->precision = 2;
    private->values = NULL;

    private->fg_color.red = G_MAXUINT16;
    private->fg_color.green = G_MAXUINT16;
    private->fg_color.blue = G_MAXUINT16;
    private->bg_color.red = 0;
    private->bg_color.green = 0;
    private->bg_color.blue = 0;

    private->font_name = NULL;
    private->font_list_base = 0;
    private->font_list_start = 32;
    private->font_list_end = 96;
    private->display_list_base = 0;

    private->font_desc = NULL;
    private->text_width_screen = 0;
    private->text_height_screen = 0;

    private->rebuild_font = TRUE;
    private->redisplay = TRUE;

    (G_SEIS_VIEW_AXIS (self))->type = G_SEIS_VIEW_AXIS_TOP;
    (G_SEIS_VIEW_AXIS (self))->size_pixels = 35;

    private->is_threaded = FALSE;
    private->rendering_mutex = NULL;

#ifdef DEBUG
    g_print ("<GSeisViewAxisTraces is inited>\n");
#endif
}

static void g_seis_view_axis_traces_finalize (GObject *object) {
    GSeisViewAxisTracesPrivate *private = G_SEIS_VIEW_AXIS_TRACES_GET_PRIVATE (G_SEIS_VIEW_AXIS_TRACES (object));

    if (private->font_name)
        g_free (private->font_name);

    if (private->font_desc)
        pango_font_description_free (private->font_desc);

    if (private->values)
        g_array_free (private->values, TRUE);

    if (private->rendering_mutex)
        g_mutex_free (private->rendering_mutex);

#ifdef DEBUG
    g_print ("<GSeisViewAxisTraces is finalized>\n");
#endif
    if (G_OBJECT_CLASS (g_seis_view_axis_traces_parent_class)->finalize)
        G_OBJECT_CLASS (g_seis_view_axis_traces_parent_class)->finalize (object);
}

static void g_seis_view_axis_traces_class_init (GSeisViewAxisTracesClass *klass) {
    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
    GSeisViewAxisClass *axis_class = G_SEIS_VIEW_AXIS_CLASS (klass);

    gobject_class->finalize = g_seis_view_axis_traces_finalize;

    gobject_class->set_property = g_seis_view_axis_traces_set_property;
    gobject_class->get_property = g_seis_view_axis_traces_get_property;

    g_type_class_add_private (klass, sizeof (GSeisViewAxisTracesPrivate));

    axis_class->view_attach_notify = g_seis_view_axis_traces_attach_notify;
    axis_class->view_detach_notify = g_seis_view_axis_traces_detach_notify;

    axis_class->view_data_viewport_change = g_seis_view_axis_traces_data_viewport_change;

    axis_class->view_redraw_event = g_seis_view_axis_traces_redraw_event;
    axis_class->view_resize_event = g_seis_view_axis_traces_resize_event;

    axis_class->axis_reshape = g_seis_view_axis_traces_reshape;

    g_object_class_install_property (gobject_class,
                                     PROP_VALUES,
                                     g_param_spec_pointer ("values", "Values",
                                     "Labels in integer/float format",
                                     G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_STR_VALUES,
                                     g_param_spec_pointer ("str_values", "StrValues",
                                     "Labels in string format",
                                     G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_FORMAT,
                                     g_param_spec_enum ("format", "Format",
                                     "Tick labels format",
                                     g_seis_view_axis_traces_format_get_type (),
                                     G_SEIS_VIEW_AXIS_TRACES_FLOAT,
                                     G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_PRECISION,
                                     g_param_spec_uchar ("precision", "Precision",
                                     "Tick labels precision (number of digits in fractinal part)",
                                     0,
                                     6,
                                     2,
                                     G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_FONT,
                                     g_param_spec_string ("font", "Font",
                                     "Font to use in labels",
#ifdef WIN32
                                     "Tahoma 10",
#else
                                     "Helvetica 10",
#endif
                                     G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_FG_COLOR,
                                     g_param_spec_boxed ("fg_color", "ForegroundColor",
                                     "Foreground color of the axis",
                                     G_TYPE_SEIS_COLOR,
                                     G_PARAM_READWRITE));

    g_object_class_install_property (gobject_class,
                                     PROP_BG_COLOR,
                                     g_param_spec_boxed ("bg_color", "BackgroundColor",
                                     "Background color of the axis",
                                     G_TYPE_SEIS_COLOR,
                                     G_PARAM_READWRITE));

#ifdef DEBUG
    g_print ("<GSeisViewAxisTraces class is inited>\n");
#endif
}

GSeisViewAxisTraces* g_seis_view_axis_traces_new (void) {
    return g_object_new (G_SEIS_TYPE_VIEW_AXIS_TRACES, NULL);
}