gseispalette.c

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    g_free (private->red_lookup_table);

    if (private->color_scale)
        g_object_unref (private->color_scale);

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

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

enum {
    PROP_0,
    PROP_MIN_COLOR,
    PROP_MAX_COLOR,
    PROP_COLORS_ARRAY,
    PROP_NAME
};

static void g_seis_palette_set_property (GObject *object, guint prop_id,
                                         const GValue *value, GParamSpec *pspec) {
    GSeisPalette *self = G_SEIS_PALETTE (object);
    GSeisPalettePrivate *private = G_SEIS_PALETTE_GET_PRIVATE (self);
    GSeisColor *min_color, *max_color;

    switch (prop_id) {
        case PROP_MIN_COLOR:
            min_color = g_value_get_boxed (value);
            if (min_color) {
                private->min_color_is_set = TRUE;
                private->min_color.red = min_color->red;
                private->min_color.green = min_color->green;
                private->min_color.blue = min_color->blue;
                if (private->max_color_is_set)
                    g_seis_palette_init_by_min_max (self, &private->min_color, &private->max_color);
                g_object_notify (object, "min_color");
            }
            break;
        case PROP_MAX_COLOR:
            max_color = g_value_get_boxed (value);
            if (max_color) {
                private->max_color_is_set = TRUE;
                private->max_color.red = max_color->red;
                private->max_color.green = max_color->green;
                private->max_color.blue = max_color->blue;
                if (private->min_color_is_set)
                    g_seis_palette_init_by_min_max (self, &private->min_color, &private->max_color);
                g_object_notify (object, "max_color");
            }
            break;
        case PROP_COLORS_ARRAY:
            if (FALSE == private->min_color_is_set || FALSE == private->max_color_is_set) {
                g_seis_palette_init_by_array (self, (GArray*)g_value_get_pointer (value));
                g_object_notify (object, "colors_array");
            }
            break;
        case PROP_NAME:
            if (private->name)
                g_free (private->name);
            private->name = g_value_dup_string (value);
            if (NULL == private->name)
                private->name = g_strdup ("Default");    
            g_object_notify (object, "name");
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
            break;
    }
}

static void g_seis_palette_get_property (GObject *object, guint prop_id,
                                         GValue *value, GParamSpec *pspec) {
    GSeisPalette *self = G_SEIS_PALETTE (object);
    GSeisPalettePrivate *private = G_SEIS_PALETTE_GET_PRIVATE (self);

    switch (prop_id) {
        case PROP_COLORS_ARRAY:
            g_value_set_pointer (value, NULL);
            break;
        case PROP_MIN_COLOR:
            g_value_set_boxed (value, NULL);
            break;
        case PROP_MAX_COLOR:
            g_value_set_boxed (value, NULL);
            break;
        case PROP_NAME:
            g_value_set_string (value, private->name);
            break;
        default:
            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
            break;
    }
}

static void g_seis_palette_class_init (GSeisPaletteClass *klass) {
    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

    gobject_class->finalize = (GObjectFinalizeFunc) g_seis_palette_finalize;
    gobject_class->set_property = g_seis_palette_set_property;
    gobject_class->get_property = g_seis_palette_get_property;

    g_type_class_add_private (klass, sizeof (GSeisPalettePrivate));

    g_object_class_install_property (gobject_class,
                                     PROP_MIN_COLOR,
                                     g_param_spec_boxed ("min_color", "MinimumColor",
                                     "Color of the palette bottom",
                                     G_TYPE_SEIS_COLOR,
                                     G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (gobject_class,
                                     PROP_MAX_COLOR,
                                     g_param_spec_boxed ("max_color", "MaximumColor",
                                     "Color of the palette top",
                                     G_TYPE_SEIS_COLOR,
                                     G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (gobject_class,
                                     PROP_COLORS_ARRAY,
                                     g_param_spec_pointer ("colors_array", "ColorArray",
                                     "Array of colors to construct palette from",
                                     G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));

    g_object_class_install_property (gobject_class,
                                     PROP_NAME,
                                     g_param_spec_string ("name", "Name",
                                     "Palette name",
                                     "Default",
                                     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));

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

static GPtrArray* predefined_palettes;

GPtrArray *g_seis_view_get_predefined_palettes (void) {
    GSeisPalette *palette;
    GSeisPaletteDef palette_def;
    GArray *palette_array_def;

    if (predefined_palettes)
        return predefined_palettes;

    predefined_palettes = g_ptr_array_sized_new (20);

    palette_array_def = g_array_sized_new (FALSE, FALSE, sizeof (GSeisPaletteDef), 20);

/*
 *
 * Grayscale
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "Grayscale");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Black-White-Blue
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "BlackWhiteBlue");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Black-White-Green
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 0;
    palette_def.color.green = 65535;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "BlackWhiteGreen");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Black-White-Purple
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 44060;
    palette_def.color.green = 115;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "BlackWhitePurple");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Black-White-Red
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 65535;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "BlackWhiteRed");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Blue-White-Black
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "BlueWhiteBlack");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Blue-White-Green
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 1.0f;
    palette_def.color.red = 0;
    palette_def.color.green = 65535;
    palette_def.color.blue = 0;
    g_array_append_val (palette_array_def, palette_def);

    palette = g_seis_palette_new_by_array (palette_array_def, "BlueWhiteGreen");
    g_ptr_array_add (predefined_palettes, (gpointer)palette);
    g_array_remove_range (palette_array_def, 0, palette_array_def->len);

/*
 *
 * Blue-White-Red
 *
 */
    palette_def.interpolate = TRUE;
    palette_def.scale_position = 0.f;
    palette_def.color.red = 0;
    palette_def.color.green = 0;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);

    palette_def.scale_position = 0.502f;
    palette_def.color.red = 65535;
    palette_def.color.green = 65535;
    palette_def.color.blue = 65535;
    g_array_append_val (palette_array_def, palette_def);