path: root/filter/filter-colour.c

/*
 *  Copyright (C) 2000 Ximian Inc.
 *
 *  Authors: Not Zed <notzed@lostzed.mmc.com.au>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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.
 */

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

#include <gtk/gtksignal.h>
#include <libgnomeui/gnome-color-picker.h>

#include "e-util/e-sexp.h"
#include "filter-colour.h"

#define d(x)

static void xml_create(FilterElement *fe, xmlNodePtr node);
static xmlNodePtr xml_encode(FilterElement *fe);
static int xml_decode(FilterElement *fe, xmlNodePtr node);
static GtkWidget *get_widget(FilterElement *fe);
static void build_code(FilterElement *fe, GString *out, struct _FilterPart *ff);
static void format_sexp(FilterElement *, GString *);

static void filter_colour_class_init    (FilterColourClass *class);
static void filter_colour_init  (FilterColour *gspaper);
static void filter_colour_finalise  (GtkObject *obj);

#define _PRIVATE(x) (((FilterColour *)(x))->priv)

struct _FilterColourPrivate {
};

static FilterElementClass *parent_class;

enum {
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

guint
filter_colour_get_type (void)
{
    static guint type = 0;
    
    if (!type) {
        GtkTypeInfo type_info = {
            "FilterColour",
            sizeof(FilterColour),
            sizeof(FilterColourClass),
            (GtkClassInitFunc)filter_colour_class_init,
            (GtkObjectInitFunc)filter_colour_init,
            (GtkArgSetFunc)NULL,
            (GtkArgGetFunc)NULL
        };
        
        type = gtk_type_unique(filter_element_get_type (), &type_info);
    }
    
    return type;
}

static void
filter_colour_class_init (FilterColourClass *class)
{
    GtkObjectClass *object_class;
    FilterElementClass *filter_element = (FilterElementClass *)class;
    
    object_class = (GtkObjectClass *)class;
    parent_class = gtk_type_class(filter_element_get_type ());

    object_class->finalize = filter_colour_finalise;

    /* override methods */
    filter_element->xml_create = xml_create;
    filter_element->xml_encode = xml_encode;
    filter_element->xml_decode = xml_decode;
    filter_element->get_widget = get_widget;
    filter_element->build_code = build_code;
    filter_element->format_sexp = format_sexp;

    /* signals */

    gtk_object_class_add_signals(object_class, signals, LAST_SIGNAL);
}

static void
filter_colour_init (FilterColour *o)
{
    o->priv = g_malloc0(sizeof(*o->priv));
}

static void
filter_colour_finalise(GtkObject *obj)
{
    FilterColour *o = (FilterColour *)obj;

    o = o;

        ((GtkObjectClass *)(parent_class))->finalize(obj);
}

/**
 * filter_colour_new:
 *
 * Create a new FilterColour object.
 * 
 * Return value: A new #FilterColour object.
 **/
FilterColour *
filter_colour_new(void)
{
    FilterColour *o = (FilterColour *)gtk_type_new(filter_colour_get_type ());
    return o;
}

static void xml_create(FilterElement *fe, xmlNodePtr node)
{
    /*FilterColour *fc = (FilterColour *)fe;*/

    /* parent implementation */
        ((FilterElementClass *)(parent_class))->xml_create(fe, node);
}

static xmlNodePtr xml_encode(FilterElement *fe)
{
    xmlNodePtr value;
    FilterColour *fc = (FilterColour *)fe;
    char hex[16];

    d(printf("Encoding colour as xml\n"));
    value = xmlNewNode(NULL, "value");
    xmlSetProp(value, "name", fe->name);
    xmlSetProp(value, "type", "colour");

    sprintf(hex, "%04x", fc->r);
    xmlSetProp(value, "red", hex);
    sprintf(hex, "%04x", fc->g);
    xmlSetProp(value, "green", hex);
    sprintf(hex, "%04x", fc->b);
    xmlSetProp(value, "blue", hex);
    sprintf(hex, "%04x", fc->a);
    xmlSetProp(value, "alpha", hex);

    return value;
}

static guint16
get_value(xmlNodePtr node, char *name)
{
    unsigned int ret;
    char *value;

    value = xmlGetProp(node, name);
    sscanf(value, "%04x", &ret);
    xmlFree(value);
    return ret;
}


static int xml_decode(FilterElement *fe, xmlNodePtr node)
{
    FilterColour *fc = (FilterColour *)fe;

    xmlFree (fe->name);
    fe->name = xmlGetProp(node, "name");
    fc->r = get_value(node, "red");
    fc->g = get_value(node, "green");
    fc->b = get_value(node, "blue");
    fc->a = get_value(node, "alpha");

    return 0;
}

static void set_colour(GnomeColorPicker *cp, guint r, guint g, guint b, guint a, FilterColour *fc)
{
    fc->r = r;
    fc->g = g;
    fc->b = b;
    fc->a = a;
}

static GtkWidget *get_widget(FilterElement *fe)
{
    FilterColour *fc = (FilterColour *)fe;
    GnomeColorPicker *cp;

    cp = (GnomeColorPicker *)gnome_color_picker_new();
    gnome_color_picker_set_i16(cp, fc->r, fc->g, fc->b, fc->a);
    gtk_widget_show((GtkWidget *)cp);
    gtk_signal_connect((GtkObject *)cp, "color_set", set_colour, fe);
    return (GtkWidget *)cp;
}

static void build_code(FilterElement *fe, GString *out, struct _FilterPart *ff)
{
    return;
}

static void format_sexp(FilterElement *fe, GString *out)
{
    char *str;
    FilterColour *fc = (FilterColour *)fe;

    str =g_strdup_printf("rgb:%04x/%04x/%04x", fc->r, fc->g, fc->b);
    e_sexp_encode_string(out, str);
    g_free(str);
}