<?php
/*
 *  export        libcaca export test program
 *  Copyright (c) 2008 Benjamin C. Wiley Sittler <bsittler@gmail.com>
 *
 *  This file is a Php port of "examples/export.c"
 *  which is:
 *  Copyright (c) 2006 Sam Hocevar <sam@hocevar.net>
 *                All Rights Reserved
 *
 *  This program is free software. It comes without any warranty, to
 *  the extent permitted by applicable law. You can redistribute it
 *  and/or modify it under the terms of the Do What The Fuck You Want
 *  To Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */

define('WIDTH', 80);
define('HEIGHT', 32);

$pixels = imagecreatetruecolor(256, 256);

$exports = caca_get_export_list();

$file = isset($_FILES['file']) ? $_FILES['file']['tmp_name'] : NULL;
$filename = isset($_FILES['file']) ? $_FILES['file']['name'] : NULL;
$format = isset($_REQUEST['format']) ? $_REQUEST['format'] : NULL;

if((! $format) || (! array_key_exists($format, $exports)))
{
    header("Content-type: text/html; charset=UTF-8");

?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>libcaca export test program</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript">
/*<![CDATA[*/
update_preview = function (select)
{
    var iframe_map = {
        'html': true,
        'html3': true,
        'bbfr': true
    };
    if (self.opera
        ||
        (('' + navigator.userAgent).match(/.*(WebKit|Gecko).*/)))
    {
        iframe_map['svg'] = true;
    }
    var e;
    try
    {
        var format = select.options[select.selectedIndex].value;
        var newLocation = 'about:blank';
        if (iframe_map[format])
        {
            newLocation = self.location.pathname + '?format=' + encodeURIComponent(format);
        }
        self.frames[0].location.replace(newLocation, true);
    }
    catch (e)
    {
        alert('e' + e);
    }
    return true;
};
/*]]>*/
</script>
</head>
<body onload="update_preview(document.forms.exportform.elements.format);">

<form id="exportform" name="exportform" action="#" enctype="multipart/form-data" method="post">
<label for="file">File:</label>
<input id="file" name="file" type="file" /> <em>(optional)</em>
<br />
<input type="submit" value="Export" />
<label for="format">as</label>
<select name="format" id="format" onchange="update_preview(this);">
<?php
    foreach($exports as $format => $name)
    {
        ?><option value="<?= htmlspecialchars($format) ?>"<?=
            ($format == 'html') ? ' selected="selected"' : '' ?>><?=
            htmlspecialchars($name . " (" . $format . ")") ?></option><?php
    }
?>
</select>
</form>
<?php
$export_php = isset($_SERVER['SCRIPT_NAME'])
        ?
        $_SERVER['SCRIPT_NAME']
        :
        'export.php';
?><iframe frameborder="0" name="preview" id="preview" width="820" height="620" style="margin: 0; padding: 0; border: none; width: 100%"></iframe>
</body>
</html>
<?php
    exit(0);
}

if($file)
{
    $cv = caca_create_canvas(0, 0);
    if(caca_import_file($cv, $file, "") < 0)
    {
        die("`" . htmlspecialchars($filename) . "' has unknown format\n");
    }
}
else
{
    $cv = caca_create_canvas(WIDTH, HEIGHT);

    for($y = 0; $y < 256; $y++)
    {
        for($x = 0; $x < 256; $x++)
        {
            $r = $x;
            $g = (255 - $y + $x) / 2;
            $b = $y * (255 - $x) / 256;
            imagesetpixel($pixels, $x, $y, imagecolorallocate($pixels, $r, $g, $b));
        }
    }

    $dither = caca_create_dither($pixels);
    if(($format == "ansi") || ($format == "utf8"))
        caca_set_dither_charset($dither, "shades");
    caca_dither_bitmap($cv, 0, 0, caca_get_canvas_width($cv),
                       caca_get_canvas_height($cv), $dither, $pixels);

    caca_set_color_ansi($cv, CACA_WHITE, CACA_BLACK);
    caca_draw_thin_box($cv, 0, 0, WIDTH - 1, HEIGHT - 1);

    caca_set_color_ansi($cv, CACA_BLACK, CACA_WHITE);
    caca_fill_ellipse($cv, WIDTH / 2, HEIGHT / 2,
                      WIDTH / 4, HEIGHT / 4, ord(' '));

    caca_set_color_ansi($cv, CACA_LIGHTGRAY, CACA_BLACK);
    caca_put_str($cv, WIDTH / 2 - 12, HEIGHT / 2 - 6,
                 "   lightgray on black   ");
    caca_set_color_ansi($cv, CACA_DEFAULT, CACA_TRANSPARENT);
    caca_put_str($cv, WIDTH / 2 - 12, HEIGHT / 2 - 5,
                 " default on transparent ");
    caca_set_color_ansi($cv, CACA_BLACK, CACA_WHITE);
    caca_put_str($cv, WIDTH / 2 - 12, HEIGHT / 2 - 4,
                 "     black on white     ");

    caca_set_color_ansi($cv, CACA_BLACK, CACA_WHITE);
    caca_put_str($cv, WIDTH / 2 - 8, HEIGHT / 2 - 3, "[<><><><> <>--<>]");
    caca_put_str($cv, WIDTH / 2 - 8, HEIGHT / 2 - 2, "[ドラゴン ボーレ]");
    caca_put_str($cv, WIDTH / 2 - 7, HEIGHT / 2 + 2, "äβç ░▒▓█▓▒░ ΔЗҒ");
    caca_put_str($cv, WIDTH / 2 - 5, HEIGHT / 2 + 4, "(\") \\o/ <&>");

    caca_set_attr($cv, CACA_BOLD);
    caca_put_str($cv, WIDTH / 2 - 16, HEIGHT / 2 + 3, "Bold");
    caca_set_attr($cv, CACA_BLINK);
    caca_put_str($cv, WIDTH / 2 - 9, HEIGHT / 2 + 3, "Blink");
    caca_set_attr($cv, CACA_ITALICS);
    caca_put_str($cv, WIDTH / 2 - 1, HEIGHT / 2 + 3, "Italics");
    caca_set_attr($cv, CACA_UNDERLINE);
    caca_put_str($cv, WIDTH / 2 + 8, HEIGHT / 2 + 3, "Underline");
    caca_set_attr($cv, 0);

    caca_set_color_ansi($cv, CACA_WHITE, CACA_LIGHTBLUE);
    caca_put_str($cv, WIDTH / 2 - 7, HEIGHT / 2, "    LIBCACA    ");

    for($x = 0; $x < 16; $x++)
    {
        caca_set_color_argb($cv, 0xff00 | $x, 0xf00f | ($x << 4));
        caca_put_char($cv, WIDTH / 2 - 7 + $x, HEIGHT / 2 + 6, ord('#'));
    }
}

$content_type_map = array(
    'ansi' => 'text/plain; charset=CP437',
    'utf8' => 'text/plain; charset=UTF-8',
    'utf8cr' => 'text/plain; charset=UTF-8',
    'html' => 'text/html; charset=UTF-8',
    'html3' => 'text/html; charset=UTF-8',
    'bbfr' => 'text/plain; charset=UTF-8',
    'irc' => 'text/plain; charset=UTF-8',
    'ps' => 'application/postscript',
    'svg' => 'image/svg+xml',
    'tga' => 'image/x-targa'
    );

$download_extension_map = array(
    'caca' => 'caca',
    'ansi' => 'txt',
    'utf8' => 'txt',
    'utf8cr' => 'txt',
    'irc' => 'txt',
    'tga' => 'tga'
    );

$inline_extension_map = array(
    'bbfr' => 'txt',
    'ps' => 'ps',
    'svg' => 'svg'
    );

if (! array_key_exists($format, $content_type_map))
    $content_type = 'application/octet-stream';
else
    $content_type = $content_type_map[$format];

header('Content-Type: ' . $content_type);
if (array_key_exists($format, $download_extension_map))
    header('Content-Disposition: attachment; filename=export.' . $download_extension_map[$format]);
else if (array_key_exists($format, $inline_extension_map))
    header('Content-Disposition: inline; filename=export.' . $inline_extension_map[$format]);

echo caca_export_string($cv, $format);

?>
