path: root/filter/e-filter-color.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Not Zed <notzed@lostzed.mmc.com.au>
 *      Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

#include <gtk/gtk.h>
#include <libedataserver/e-sexp.h>

#include "e-filter-color.h"

G_DEFINE_TYPE (
    EFilterColor,
    e_filter_color,
    E_TYPE_FILTER_ELEMENT)

static void
set_color (GtkColorButton *color_button,
           EFilterColor *fc)
{
    gtk_color_button_get_color (color_button, &fc->color);
}

static gint
filter_color_eq (EFilterElement *element_a,
                 EFilterElement *element_b)
{
    EFilterColor *color_a = E_FILTER_COLOR (element_a);
    EFilterColor *color_b = E_FILTER_COLOR (element_b);

    return E_FILTER_ELEMENT_CLASS (e_filter_color_parent_class)->
        eq (element_a, element_b) &&
        gdk_color_equal (&color_a->color, &color_b->color);
}

static xmlNodePtr
filter_color_xml_encode (EFilterElement *element)
{
    EFilterColor *fc = E_FILTER_COLOR (element);
    xmlNodePtr value;
    gchar spec[16];

    g_snprintf (spec, sizeof (spec), "#%04x%04x%04x",
        fc->color.red, fc->color.green, fc->color.blue);

    value = xmlNewNode(NULL, (xmlChar *)"value");
    xmlSetProp(value, (xmlChar *)"type", (xmlChar *)"colour");
    xmlSetProp(value, (xmlChar *)"name", (xmlChar *)element->name);
    xmlSetProp(value, (xmlChar *)"spec", (xmlChar *)spec);

    return value;
}

static gint
filter_color_xml_decode (EFilterElement *element,
                         xmlNodePtr node)
{
    EFilterColor *fc = E_FILTER_COLOR (element);
    xmlChar *prop;

    xmlFree (element->name);
    element->name = (gchar *)xmlGetProp(node, (xmlChar *)"name");

    prop = xmlGetProp(node, (xmlChar *)"spec");
    if (prop != NULL) {
        gdk_color_parse ((gchar *) prop, &fc->color);
        xmlFree (prop);
    } else {
        /* try reading the old RGB properties */
        prop = xmlGetProp(node, (xmlChar *)"red");
        sscanf((gchar *)prop, "%" G_GINT16_MODIFIER "x", &fc->color.red);
        xmlFree (prop);
        prop = xmlGetProp(node, (xmlChar *)"green");
        sscanf((gchar *)prop, "%" G_GINT16_MODIFIER "x", &fc->color.green);
        xmlFree (prop);
        prop = xmlGetProp(node, (xmlChar *)"blue");
        sscanf((gchar *)prop, "%" G_GINT16_MODIFIER "x", &fc->color.blue);
        xmlFree (prop);
    }

    return 0;
}

static GtkWidget *
filter_color_get_widget (EFilterElement *element)
{
    EFilterColor *fc = E_FILTER_COLOR (element);
    GtkWidget *color_button;

    color_button = gtk_color_button_new_with_color (&fc->color);
    gtk_widget_show (color_button);

    g_signal_connect (
        G_OBJECT (color_button), "color_set",
        G_CALLBACK (set_color), element);

    return color_button;
}

static void
filter_color_format_sexp (EFilterElement *element,
                          GString *out)
{
    EFilterColor *fc = E_FILTER_COLOR (element);
    gchar spec[16];

    g_snprintf (spec, sizeof (spec), "#%04x%04x%04x",
        fc->color.red, fc->color.green, fc->color.blue);
    e_sexp_encode_string (out, spec);
}

static void
e_filter_color_class_init (EFilterColorClass *class)
{
    EFilterElementClass *filter_element_class;

    filter_element_class = E_FILTER_ELEMENT_CLASS (class);
    filter_element_class->eq = filter_color_eq;
    filter_element_class->xml_encode = filter_color_xml_encode;
    filter_element_class->xml_decode = filter_color_xml_decode;
    filter_element_class->get_widget = filter_color_get_widget;
    filter_element_class->format_sexp = filter_color_format_sexp;
}

static void
e_filter_color_init (EFilterColor *filter)
{
}

/**
 * filter_color_new:
 *
 * Create a new EFilterColor object.
 *
 * Return value: A new #EFilterColor object.
 **/
EFilterColor *
e_filter_color_new (void)
{
    return g_object_new (E_TYPE_FILTER_COLOR, NULL);
}