<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2004 Bharat Mediratta
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * 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.
 *
 * $Id: high.inc,v 1.9 2004/06/15 00:53:09 jenst Exp $
 */
?>
<?php
function slideshow_initialize()
{
	global $gallery, $albumName, $defaultLoop, $defaultPause, $defaultTransition, $full_option,
			$album, $recursive, $number, $random, $loop, $borderColor, $borderwidth, $bgcolor,
			$url, $full_urls, $urls, $caption, $captions, $photo_count, $title;

    // default settings ---
    $defaultLoop = 0;
    $defaultTransition = 0;
    $defaultPause = 3;

    $full_option = false;
    
    define('PHOTO_URL', 1 << 0);
    define('PHOTO_CAPTION', 1 << 1);
    define('PHOTO_URL_AS_HREF', 1 << 2);
    define('PHOTO_ALL', (1 << 16)-1); // all bits set
    $url = array();
    $full_urls = array();
    $caption = array();
    $photo_count = buildSlideshowPhotos($full_urls, $urls, $captions, $album, $recursive);

    if ($photo_count > 0) {
        if ($number == 0 || $number > $photo_count) {
            $number = $photo_count;
        } 
        if ($random) {
            $random_full_urls = array();
            $random_photos = array();
            srand ((float) microtime() * 10000000);
            $rand_keys = array_rand ($urls, $number);
            if ($number == 1) {
                $rand_keys = array($rand_keys);
            } 
            foreach ($rand_keys as $key) {
                $random_urls[] = $urls[$key];
                $random_full_urls[] = $full_urls[$key];
                $random_captions[] = $captions[$key];
            } 
            $urls = $random_urls;
            $full_urls = $random_full_urls;
            $captions = $random_captions;
        } 
        if (empty($albumName)) {
            if ($random) {
                $title = sprintf(_("%s Random Images from %s"),
                    $number,
                    $gallery->app->galleryTitle);
            } else {
                $title = sprintf(_("Slide Show for Gallery :: %s"),
                    $gallery->app->galleryTitle);
            } 
        } else {
            if ($random) {
                $title = sprintf(_("%d Random Images from album :: %s"),
                    $number,
                    $gallery->album->fields["title"]);
            } else {
                $title = sprintf(_("Slide Show for album :: %s"), $gallery->album->fields["title"]);
            } 
        } 
    } 
} 

function buildSlideshowPhotos(&$full_urls, &$urls, &$captions, $album = null, $recursive = true)
{
    global $gallery, $full_option;
    $photo_count = 0;

    if (!$album) {
        // Top level
        $albumDB = new AlbumDB(false);
        $numAlbums = $albumDB->numAlbums($gallery->user);

        for ($i = 1; $i <= $numAlbums; $i++) {
            $subAlbum = $albumDB->getAlbum($gallery->user, $i);
            if (!$gallery->user->canReadAlbum($subAlbum)) {
                continue;
            } 
            $photo_count += buildSlideshowPhotos($full_urls, $urls, $captions, $subAlbum, $recursive);
        } 
        return $photo_count;
    } 
    if (!$gallery->user->canReadAlbum($album)) {
        return $photo_count;
    } 
    $numPhotos = $album->numPhotos(1);
    $numDisplayed = 0; 
    // Find the correct starting point, accounting for hidden photos
    $index = getNextPhoto(0, $album);
    $photo_count = 0;
    while ($numDisplayed < $numPhotos) {
        if ($index > $numPhotos) {
            /*
  * We went past the end -- this can happen if the last element is
  * an album that we can't read.
  */
            break;
        } 

        $photo = $album->getPhoto($index);
        $numDisplayed++; 
        // Skip movies
        if ($photo->isMovie()) {
            $index = getNextPhoto($index, $album);
            continue;
        } 
        if ($photo->isAlbum()) {
            if ($recursive) {
                $subAlbumName = $album->getAlbumName($index);
                $subAlbum = new Album();
                $subAlbum->load($subAlbumName);
                if ($gallery->user->canReadAlbum($subAlbum)) {
                    $photo_count += buildSlideshowPhotos($full_urls, $urls, $captions, $subAlbum, $recursive);
                } 
            } 
            $index = getNextPhoto($index, $album);
            continue;
        } 
        $photo_count++;

        $urls[] = $album->getPhotoPath($index, 0);
        if ($gallery->user->canViewFullImages($album)) {
            $full_option = true;
            $full_urls[] = $album->getPhotoPath($index, 1);
        } else {
            $full_urls[] = $album->getPhotoPath($index, 0);
        } 

        $caption = $album->getCaption($index);
        if ($recursive) {
            $caption .= ' (<a href="' . makeAlbumURL($album->fields["name"]) . '">' . $album->fields['title'] . '</a>)';
        } 
        $caption .= $album->getCaptionName($index);
        $caption = str_replace("\"", " ", $caption);
        $caption = str_replace("\n", " ", $caption);
        $caption = str_replace("\r", " ", $caption); 
        // Print out the entry for this image as Javascript
        $captions[] = $caption; 
        // Go to the next photo
        $index = getNextPhoto($index, $album);
    } 

    return $photo_count;
} 

function printSlideshowPhotos($full_urls, $urls, $captions, $what, $photo_count)
{
    $count = 0;
    for ($index = 0; $index < $photo_count; $index++) {
        $count++;
        if (($what &PHOTO_URL) != 0) {
            print "photo_urls[$count] = \"" . $urls[$index] . "\";\n";
        } 

        if (($what &PHOTO_URL_AS_HREF) != 0) {
            print "<a id=\"photo_urls_$count\" href=\"" . $urls[$index] . "\"></a>\n";
            print "<a id=\"full_photo_urls_$count\" href=\"" . $full_urls[$index] . "\"></a>\n";
        } 
        if (($what &PHOTO_CAPTION) != 0) {
            // Print out the entry for this image as Javascript
            print "photo_captions[$count] = \"" . $captions[$index] . "\";\n";
        } 
    } 
} 

function slideshow_body()
{
	global $gallery, $albumName, $defaultLoop, $defaultPause, $defaultTransition, $full_option,
			$album, $recursive, $number, $random, $loop, $borderColor, $borderwidth, $bgcolor,
			$url, $full_urls, $urls, $caption, $captions, $photo_count, $title, $transitionNames,
			$transitionCount, $pixelImage;
	
	$photo_count = $number;

    /* Here are the URLs of the images written down as links. This is to make
 wget able to convert these links. It will not convert them, if they
 are written inside JavaScript.
 JavaScript will then take the images out of these links
 with "document.getElementById()". */

    printSlideshowPhotos($full_urls, $urls, $captions, PHOTO_URL_AS_HREF,
        $photo_count);

    ?>

</script>
<script language="JavaScript">
var timer;
var current_location = 1;
var next_location = 1;
var pics_loaded = 0;
var onoff = 0;
var fullsized = 0;
var direction = 1;
var timeout_value;
var images = new Array;
var photo_urls = new Array;
var full_photo_urls = new Array;
var photo_captions = new Array;
var transitionNames = new Array;
var transitions = new Array;
var current_transition = <?php echo $defaultTransition ?>;
var loop = <?php echo $defaultLoop ?>;
<?php
    printSlideshowPhotos($full_urls, $urls, $captions, PHOTO_CAPTION, $photo_count);

    $transitionNames[] = _("Blend");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Fade(duration=1)';
    $transitionNames[] = _("Blinds");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Blinds(Duration=1,bands=20)';
    $transitionNames[] = _("Checkerboard");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Checkerboard(Duration=1,squaresX=20,squaresY=20)';
    $transitionNames[] = _("Diagonal");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Strips(Duration=1,motion=rightdown)';
    $transitionNames[] = _("Doors");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Barn(Duration=1,orientation=vertical)';
    $transitionNames[] = _("Gradient");
    $transitions[] = 'progid:DXImageTransform.Microsoft.GradientWipe(duration=1)';
    $transitionNames[] = _("Iris");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Iris(Duration=1,motion=out)';
    $transitionNames[] = _("Pinwheel");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Wheel(Duration=1,spokes=12)';
    $transitionNames[] = _("Pixelate");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Pixelate(maxSquare=10,duration=1)';
    $transitionNames[] = _("Radial");
    $transitions[] = 'progid:DXImageTransform.Microsoft.RadialWipe(Duration=1,wipeStyle=clock)';
    $transitionNames[] = _("Rain");
    $transitions[] = 'progid:DXImageTransform.Microsoft.RandomBars(Duration=1,orientation=vertical)';
    $transitionNames[] = _("Slide");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Slide(Duration=1,slideStyle=push)';
    $transitionNames[] = _("Snow");
    $transitions[] = 'progid:DXImageTransform.Microsoft.RandomDissolve(Duration=1,orientation=vertical)';
    $transitionNames[] = _("Spiral");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Spiral(Duration=1,gridSizeX=40,gridSizeY=40)';
    $transitionNames[] = _("Stretch");
    $transitions[] = 'progid:DXImageTransform.Microsoft.Stretch(Duration=1,stretchStyle=push)';

    $transitionNames[] = _("RANDOM!");
    $transitions[] = 'special case';

    $transitionCount = sizeof($transitions) - 1;

    $trans_i = 0;
    foreach ($transitions as $definition) {
        print "transitions[$trans_i] = \"$definition\";\n";
        $trans_i++;
    } 
    print "var transition_count = $transitionCount;\n";

    ?>
var photo_count = <?php echo $photo_count ?>;

// - IE5.5 and up can do the blending transition.
var browserCanBlend = (is_ie5_5up);

function stopOrStart() {
if (onoff) {
stop();
} else {
play();
}
}

function fullOrNormal() {
images = new Array;
pics_loaded=0;
if (fullsized) {
normal();
} else {
full();
}
next_location = current_location;
preload_photo(next_location);
go_to_next_photo();
}

function toggleLoop() {
if (loop) {
loop = 0;
} else {
loop = 1;
}
}

function changeElementText(id, newText) {
element = document.getElementById(id);
element.innerHTML = newText;
}

function stop() {
changeElementText("stopOrStartText", "<?php echo _("play") ?>");

onoff = 0;
status = "<?php echo unhtmlentities(_("The slide show is stopped, Click [play] to resume.")) ?>";
clearTimeout(timer);

}

function play() {
changeElementText("stopOrStartText", "<?php echo _("stop") ?>");

onoff = 1;
status = "<?php echo unhtmlentities(_("Slide show is running...")) ?>";
go_to_next_photo();
}

function full() {
changeElementText("fullOrNormalText", "<?php echo _("normal size") ?>");
fullsized = 1;
status = "<?php echo unhtmlentities(_("The slide is showing full sized images, Click [normal size] to view resized images.")) ?>";
}

function normal() {
changeElementText("fullOrNormalText", "<?php echo _("full size") ?>");

fullsized = 0;
status = "<?php echo unhtmlentities(_("The slide is showing normal sized images, Click [full size] to view full sized images.")) ?>";
}

function changeDirection() {
if (direction == 1) {
direction = -1;
changeElementText("changeDirText", "<?php echo _("forward direction") ?>");
} else {
direction = 1;
changeElementText("changeDirText", "<?php echo _("reverse direction") ?>");
}
preload_next_photo();

}

function change_transition() {
current_transition = document.TopForm.transitionType.selectedIndex;
}

function preload_complete() {
}

function reset_timer() {
clearTimeout(timer);
if (onoff) {
timeout_value = document.TopForm.time.options[document.TopForm.time.selectedIndex].value * 1000;
timer = setTimeout('go_to_next_photo()', timeout_value);
}
}

function wait_for_current_photo() {

/* Show the current photo */
if (!show_current_photo()) {

/*
* The current photo isn't loaded yet.  Set a short timer just to wait
* until the current photo is loaded.
*/
status = "<?php echo unhtmlentities(_("Picture is loading...")) ?>(" + current_location + " <?php echo unhtmlentities(_("of")) ?>" + photo_count +
").  " + "<?php echo unhtmlentities(_("Please Wait...")) ?>" ;
clearTimeout(timer);
timer = setTimeout('wait_for_current_photo()', 500);
return 0;
} else {
status = "<?php echo unhtmlentities(_("Slide show is running...")) ?>" ;
preload_next_photo();
reset_timer();
}
}

function go_to_next_photo() {
/* Go to the next location */
current_location = next_location;

/* Show the current photo */
if (!show_current_photo()) {
wait_for_current_photo();
return 0;
}

preload_next_photo();
reset_timer();
}

function preload_next_photo() {

/* Calculate the new next location */
next_location = (parseInt(current_location) + parseInt(direction));
if (next_location > photo_count) {
next_location = 1;
if (!loop) {
 stop();
}
}
if (next_location == 0) {
    next_location = photo_count;
if (!loop) {
 stop();
}
}

/* Preload the next photo */
preload_photo(next_location);
}

function show_current_photo() {

/*
 * If the current photo is not completely loaded don't display it.
 */
if (!images[current_location] || !images[current_location].complete) {
preload_photo(current_location);
return 0;
}

/* transistion effects */
if (browserCanBlend){
var do_transition;
if (current_transition == (transition_count)) {
 do_transition = Math.floor(Math.random() * transition_count);
} else {
 do_transition = current_transition;
}
document.images.slide.style.filter=transitions[do_transition];
document.images.slide.filters[0].Apply();
}
document.slide.src = images[current_location].src;
setCaption(photo_captions[current_location]);

if (browserCanBlend) {
document.images.slide.filters[0].Play();
}

return 1;
}

function preload_photo(index) {

/* Load the next picture */
if (pics_loaded < photo_count) {

/* not all the pics are loaded.  Is the next one loaded? */
if (!images[index]) {
 images[index] = new Image;
 images[index].onLoad = preload_complete();
 if (fullsized) {
 	images[index].src = document.getElementById("full_photo_urls_" + index).href;
 } else {
 	images[index].src = document.getElementById("photo_urls_" + index).href;
 }
 pics_loaded++;
}
}
}

function setCaption(text) {
changeElementText("caption", "[" + current_location + " <?php echo _("of") ?> " + photo_count + "] " + text);
}

</Script>
<?php
}

function slideshow_controlPanel()
{
	global $gallery, $albumName, $defaultLoop, $defaultPause, $defaultTransition, $full_option,
			$album, $recursive, $number, $random, $loop, $borderColor, $borderwidth, $bgcolor,
			$url, $full_urls, $urls, $caption, $captions, $photo_count, $title, $transitionNames,
			$transitionCount, $pixelImage;
        ?>
<form name="TopForm">
<table width="100%" border="0" cellspacing="0" cellpadding="0" class="modnavboxmid">
<tr>
	<td colspan="3"><?php echo $pixelImage ?></td>
</tr>
<tr>
	<td height="25" width="1"><?php echo $pixelImage ?></td>
	<td align="left" valign="middle">
	<span class=admin>

<?php
        echo "&nbsp;<a class=\"admin\" href='#' onClick='stopOrStart(); return false;'>[<span id='stopOrStartText'>" . _("stop") . "</span>]</a>";
        echo "&nbsp;<a class=\"admin\" href='#' onClick='changeDirection(); return false;'>[<span id='changeDirText'>" . _("reverse direction") . "</span>]</a>";

        if ($full_option) {
            echo "&nbsp;<a class=\"admin\" href='#' onClick='fullOrNormal(); return false;'>[<span id='fullOrNormalText'>" . _("full size") . "</span>]</a>";
        } 
        echo "&nbsp;&nbsp;||";

        ?>

    &nbsp;<?php echo _('Delay:') . '&nbsp;' ?>
<?php echo
        drawSelect("time", array(1 => "1 " . _("second"),
                2 => "2 " . _("seconds"),
                3 => "3 " . _("seconds"),
                4 => "4 " . _("seconds"),
                5 => "5 " . _("seconds"),
                10 => "10 " . _("seconds"),
                15 => "15 " . _("seconds"),
                30 => "30 " . _("seconds"),
                45 => "45 " . _("seconds"),
                60 => "60 " . _("seconds")),
            $defaultPause, // default value
            1, // select size
            array('onchange' => 'reset_timer()', 'style' => 'font-size:10px;'));

        ?>
    <script language="Javascript">
    /* show the blend select if appropriate */
    if (browserCanBlend) {
	document.write('&nbsp;<?php echo _("Transition:") ?><?php
        print ereg_replace("\n", ' ', drawSelect("transitionType",
                $transitionNames,
                $defaultTransition,
                1,
                array('onchange' => 'change_transition()', 'style' => 'font-size:10px;')));

        ?>');
    }

    </script>
    <?php if ($loop) {

            ?>
    &nbsp;<?php echo _('Loop') ?>:&nbsp;<input type="checkbox" name="loopCheck" <?php echo ($defaultLoop) ? "checked" : "" ?> onclick='toggleLoop();'>
    <?php } 

        ?>
	</span>
	</td>
	<td width="1"><?php echo $pixelImage ?></td>
</tr>
<tr>
	<td colspan="3"><?php echo $pixelImage ?></td>
</tr>
</table>
</form>
<?php
    } 


    function slideshow_image() {
	global $gallery, $albumName, $defaultLoop, $defaultPause, $defaultTransition, $full_option,
			$album, $recursive, $number, $random, $loop, $borderColor, $borderwidth, $bgcolor,
			$url, $full_urls, $urls, $caption, $captions, $photo_count, $title, $transitionNames,
			$transitionCount, $pixelImage;
		
        if ($photo_count > 0) {

            ?>

<table border="0" cellspacing="0" cellpadding="0">
<tr>
	<td><script language="JavaScript">
		firstPhotoURL = document.getElementById("photo_urls_" + 1).href;
		document.write("<img border=<?php echo $borderwidth ?> bgcolor=<?php echo $borderColor ?> src=\"");
		document.write(firstPhotoURL);
		document.write("\" name=slide>");
	</script></td>
</tr>
</table>
<br>

<script language="Javascript">
/* show the caption */
document.write("<div class='modcaption' id='caption'></div>");

/* Load the first picture */
setCaption(photo_captions[1]);
preload_photo(1);

/* Start the show. */
play();

</script>

<?php
        } else {

            ?>

<br><b><?php echo _("This album has no photos to show in a slide show.") ?></b>
<br><br>
<span class="admin">
<a href="<?php echo makeGalleryUrl("view_album.php",
                array("set_albumName" => $gallery->session->albumName)) ?>">[<?php echo _("back to album") ?>]</a>
</span>

<?php
        } 

        ?>

</div>


<?php
    } 

    ?>