/*
 * $Id: rb_image.c 382 2006-05-25 09:20:31Z tilman $
 *
 * Copyright (C) 2004 Tilman Sauerbeck (tilman at code-monkey de)
 *
 * This library 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 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <ruby.h>

#include <Evas.h>

#include "rb_evas_main.h"
#include "rb_evas.h"
#include "rb_evas_object.h"

/*
 * call-seq:
 *  Evas::Image.new(evas) => img
 *
 * Creates an Evas::Image object.
 */
static VALUE c_init (VALUE self, VALUE evas)
{
	CHECK_CLASS (evas, cEvas);
	GET_OBJ (evas, RbEvas, e);
	GET_OBJ (self, RbEvasObject, img);

	img->real = evas_object_image_add (e->real);

	rb_call_super (1, &evas);

	return self;
}

/*
 * call-seq:
 *  img.get_file => array
 *
 * Returns an array containing the filename and the key of <i>img</i>.
 *
 *  img.set_file("foo", "bar") #=> nil
 *  img.get_file               #=> ["foo", "bar"]
 */
static VALUE c_get_file (VALUE self)
{
	char *file = NULL, *key = NULL;

	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_file_get (e->real, &file, &key);

	return rb_ary_new3 (2, file ? rb_str_new2 (file) : Qnil,
	                    key ? rb_str_new2 (key) : Qnil);
}

/*
 * call-seq:
 *  img.set_file(file [, key]) => nil
 *
 * Sets the filename and optionally the key of <i>img</i>.
 *
 *  img.set_file("foo.png")             #=> nil
 *  img.set_file("foo.edb", "/bar/baz") #=> nil
 */
static VALUE c_set_file (int argc, VALUE *argv, VALUE self)
{
	VALUE file, key;
	char *k = NULL;

	GET_OBJ (self, RbEvasObject, e);

	rb_scan_args (argc, argv, "11", &file, &key);

	if (!NIL_P (key))
		k = StringValuePtr (key);

	evas_object_image_file_set (e->real, StringValuePtr (file), k);

	return Qnil;
}

/*
 * call-seq:
 *  img.has_alpha? => true or false
 *
 * Returns true if <i>img</i> has an alpha channel, else returns false.
 */
static VALUE c_has_alpha_get (VALUE self)
{
	GET_OBJ (self, RbEvasObject, e);

	return evas_object_image_alpha_get (e->real) ? Qtrue : Qfalse;
}

/*
 * call-seq:
 *  img.has_alpha(true or false)
 *
 * Sets whether <i>img</i> has an alpha channel.
 */
static VALUE c_has_alpha_set (VALUE self, VALUE val)
{
	GET_OBJ (self, RbEvasObject, e);

	CHECK_BOOL (val);

	evas_object_image_alpha_set (e->real, val == Qtrue);

	return Qnil;
}

/*
 * call-seq:
 *  img.get_size => array
 *
 * Returns an array containing the size of <i>img</i>.
 *
 *  img.set_size(100, 200) #=> nil
 *  img.get_size           #=> [100, 200]
 */
static VALUE c_get_size (VALUE self)
{
	int w = 0, h = 0;

	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_size_get (e->real, &w, &h);

	return rb_ary_new3 (2, INT2FIX (w), INT2FIX (h));
}

/*
 * call-seq:
 *  img.set_size(x, y) => nil
 *
 * Returns an array containing the size of <i>img</i>.
 *
 *  img.set_size(100, 200) #=> nil
 *  img.get_size           #=> [100, 200]
 */
static VALUE c_set_size (VALUE self, VALUE w, VALUE h)
{
	GET_OBJ (self, RbEvasObject, e);

	Check_Type (w, T_FIXNUM);
	Check_Type (h, T_FIXNUM);

	evas_object_image_size_set (e->real, FIX2INT (w), FIX2INT (h));

	return Qnil;
}

/*
 * call-seq:
 *  img.get_fill => array
 *
 * Returns an array containing the dimensions of the rectangle
 * on <i>img</i> that the image will be drawn to.
 *
 *  img.set_fill(1, 2, 3, 4) #=> nil
 *  img.get_fill             #=> [1, 2, 3, 4]
 */
static VALUE c_get_fill (VALUE self)
{
	Evas_Coord x = 0, y = 0, w = 0, h = 0;

	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_fill_get (e->real, &x, &y, &w, &h);

	return rb_ary_new3 (4, INT2FIX ((int) x), INT2FIX ((int) y),
	                    INT2FIX ((int) w), INT2FIX ((int) h));
}

/*
 * call-seq:
 *  img.set_fill(x, y, w, h) => nil
 *
 * Sets the dimensions of the rectangle on <i>img</i> that
 * the image will be drawn to.
 *
 *  img.set_fill(1, 2, 3, 4) #=> nil
 */
static VALUE c_set_fill (VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)
{
	GET_OBJ (self, RbEvasObject, e);

	Check_Type (x, T_FIXNUM);
	Check_Type (y, T_FIXNUM);
	Check_Type (w, T_FIXNUM);
	Check_Type (h, T_FIXNUM);

	evas_object_image_fill_set (e->real, FIX2INT (x), FIX2INT (y),
	                            FIX2INT (w), FIX2INT (h));

	return Qnil;
}

static VALUE c_get_border (VALUE self)
{
	int x = 0, y = 0, w = 0, h = 0;

	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_border_get (e->real, &x, &y, &w, &h);

	return rb_ary_new3 (4, INT2FIX (x), INT2FIX (y),
	                    INT2FIX (w), INT2FIX (h));
}

static VALUE c_set_border (VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)
{
	GET_OBJ (self, RbEvasObject, e);

	Check_Type (x, T_FIXNUM);
	Check_Type (y, T_FIXNUM);
	Check_Type (w, T_FIXNUM);
	Check_Type (h, T_FIXNUM);

	evas_object_image_border_set (e->real, FIX2INT (x), FIX2INT (y),
	                              FIX2INT (w), FIX2INT (h));

	return Qnil;
}

/*
 * call-seq:
 *  img.reload => nil
 *
 * Reloads <i>img</i>.
 */
static VALUE c_reload (VALUE self)
{
	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_reload (e->real);

	return Qnil;
}

static VALUE c_data_get (int argc, VALUE *argv, VALUE self)
{
	VALUE read_write = Qfalse;
	void *data;
	int w = 0, h = 0;

	GET_OBJ (self, RbEvasObject, e);

	rb_scan_args (argc, argv, "01", &read_write);

	if (NIL_P (read_write))
		read_write = Qfalse;

	data = evas_object_image_data_get (e->real, read_write == Qtrue);
	evas_object_image_size_get (e->real, &w, &h);

	return rb_str_new (data, h * w * 4);
}

static VALUE c_data_set (VALUE self, VALUE data)
{
	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_data_set (e->real, StringValuePtr (data));

	return Qnil;
}

static VALUE c_data_update_add (VALUE self, VALUE x, VALUE y,
                                VALUE w, VALUE h)
{
	GET_OBJ (self, RbEvasObject, e);

	evas_object_image_data_update_add (e->real,
	                                   FIX2INT (x), FIX2INT (y),
	                                   FIX2INT (w), FIX2INT (h));

	return Qnil;
}

void Init_Image (void)
{
	VALUE c = rb_define_class_under (mEvas, "Image", cEvasObject);

	rb_define_method (c, "initialize", c_init, 1);
	rb_define_method (c, "get_file", c_get_file, -1);
	rb_define_method (c, "set_file", c_set_file, -1);
	rb_define_method (c, "has_alpha?", c_has_alpha_get, 0);
	rb_define_method (c, "has_alpha=", c_has_alpha_set, 1);
	rb_define_method (c, "get_size", c_get_size, 0);
	rb_define_method (c, "set_size", c_set_size, 2);
	rb_define_method (c, "get_fill", c_get_fill, 0);
	rb_define_method (c, "set_fill", c_set_fill, 4);
	rb_define_method (c, "get_border", c_get_border, 0);
	rb_define_method (c, "set_border", c_set_border, 4);
	rb_define_method (c, "reload", c_reload, 0);
	rb_define_method (c, "data", c_data_get, -1);
	rb_define_method (c, "data=", c_data_set, 1);
	rb_define_method (c, "data_update_add", c_data_update_add, 4);
}