source: trunk/third/gtkhtml3/src/htmlimageinput.c @ 21116

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*  This file is part of the GtkHTML library.

    Copyright (C) 2000 Jonas Borgström <jonas_b@bitsmart.com>.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.
*/

#include <config.h>
#include "htmlimageinput.h"
#include "htmlform.h"
#include <string.h>


HTMLImageInputClass html_imageinput_class;
static HTMLEmbeddedClass *parent_class;


static void
destroy (HTMLObject *o)
{
        html_object_destroy (HTML_OBJECT (HTML_IMAGEINPUT (o)->image));

        HTML_OBJECT_CLASS (parent_class)->destroy (o);
}

static void
copy (HTMLObject *self,
      HTMLObject *dest)
{
        HTMLObject *duplicate_image;

        (* HTML_OBJECT_CLASS (parent_class)->copy) (self, dest);

        HTML_IMAGEINPUT (dest)->m_x = HTML_IMAGEINPUT (self)->m_x;
        HTML_IMAGEINPUT (dest)->m_y = HTML_IMAGEINPUT (self)->m_y;

        duplicate_image = html_object_dup (HTML_OBJECT (HTML_IMAGEINPUT (self)->image));
        HTML_IMAGEINPUT (dest)->image = HTML_IMAGE (duplicate_image);
}

static void
draw (HTMLObject *o,
      HTMLPainter *p,
      gint x, gint y,
      gint width, gint height,
      gint tx, gint ty)
{
        HTML_OBJECT (HTML_IMAGEINPUT (o)->image)->x = o->x;
        HTML_OBJECT (HTML_IMAGEINPUT (o)->image)->y = o->y;

        html_object_draw (HTML_OBJECT (HTML_IMAGEINPUT (o)->image),
                          p,
                          x, y,
                          width, height,
                          tx, ty);
}


/* Even if it's an HTMLEmbeddable, HTMLImageInput does not use a
   widget, so we need to implement these methods ourselves instead of
   using the HTMLEmbeddable default implementations.  */

static gint
calc_min_width (HTMLObject *self,
                HTMLPainter *painter)
{
        HTMLImageInput *image_input;

        image_input = HTML_IMAGEINPUT (self);

        return html_object_calc_min_width (HTML_OBJECT (image_input->image),
                                           painter);
}

static gboolean
html_image_input_real_calc_size (HTMLObject *self, HTMLPainter *painter, GList **changed_objs)
{
        HTMLImageInput *image_input;
        HTMLObject *image_object;
        gboolean retval;

        image_input = HTML_IMAGEINPUT (self);
        image_object = HTML_OBJECT (image_input->image);

        retval = html_object_calc_size (image_object, painter, changed_objs);

        self->width = image_object->width;
        self->ascent = image_object->ascent;
        self->descent = image_object->descent;

        return retval;
}


static gchar *
encode (HTMLEmbedded *e)
{
        GString *encoding = g_string_new ("");
        gchar *ptr;

        if(strlen (e->name)) {
                ptr = html_embedded_encode_string (e->name);
                encoding = g_string_assign (encoding, ptr);
                g_free (ptr);

                ptr = g_strdup_printf(".x=%d&", HTML_IMAGEINPUT(e)->m_x);
                encoding = g_string_append (encoding, ptr);
                g_free (ptr);

                ptr = html_embedded_encode_string (e->name);
                encoding = g_string_append (encoding, ptr);
                g_free (ptr);

                ptr = g_strdup_printf(".y=%d", HTML_IMAGEINPUT(e)->m_y);
                encoding = g_string_append (encoding, ptr);
                g_free (ptr);
        }

        ptr = encoding->str;
        g_string_free(encoding, FALSE);

        return ptr;
}


void
html_imageinput_type_init (void)
{
        html_imageinput_class_init (&html_imageinput_class, HTML_TYPE_IMAGEINPUT, sizeof (HTMLImageInput));
}

void
html_imageinput_class_init (HTMLImageInputClass *klass,
                            HTMLType type,
                            guint size)
{
        HTMLEmbeddedClass *element_class;
        HTMLObjectClass *object_class;

        element_class = HTML_EMBEDDED_CLASS (klass);
        object_class = HTML_OBJECT_CLASS (klass);

        html_embedded_class_init (element_class, type, size);

        /* HTMLEmbedded methods.  */
        element_class->encode = encode;

        /* HTMLObject methods.   */
        object_class->destroy = destroy;
        object_class->copy = copy;
        object_class->draw = draw;
        object_class->calc_min_width = calc_min_width;
        object_class->calc_size = html_image_input_real_calc_size;

        parent_class = &html_embedded_class;
}

void
html_imageinput_init (HTMLImageInput *img, 
                      HTMLImageInputClass *klass,
                      HTMLImageFactory *imf,
                      gchar *name, gchar *url)
{
        HTMLEmbedded *element;
        HTMLObject *object;

        element = HTML_EMBEDDED (img);
        object = HTML_OBJECT (img);

        html_embedded_init (element, HTML_EMBEDDED_CLASS (klass), NULL, name, NULL);

        object->width = object->ascent = 32;

        img->image = HTML_IMAGE (html_image_new (imf, 
                                                 url, NULL, NULL,
                                                 -1, -1, FALSE, FALSE, 0,
                                                 NULL,
                                                 HTML_VALIGN_BOTTOM, FALSE));

        object->ascent = 32;
        object->width = 0;
        object->descent = 0;
}

HTMLObject *
html_imageinput_new (HTMLImageFactory *imf,
                     gchar *name, 
                     gchar *url)
{
        HTMLImageInput *img;

        img = g_new0 (HTMLImageInput, 1);
        html_imageinput_init (img, &html_imageinput_class, imf, name, url);

        return HTML_OBJECT (img);
}