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video and default width/height support #58

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159 changes: 85 additions & 74 deletions js/bootstrap-lightbox.js
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Original file line number Diff line number Diff line change
Expand Up @@ -195,80 +195,91 @@
}
};

Lightbox.prototype.preloadSize = function(callback)
{
var callbacks = $.Callbacks();
if(callback) callbacks.add( callback );
var that = this;

var windowHeight,
windowWidth,
padTop,
padBottom,
padLeft,
padRight,
$image,
preloader,
originalWidth,
originalHeight;
// Get the window width and height.
windowHeight = $(window).height();
windowWidth = $(window).width();

// Get the top, bottom, right, and left padding
padTop = parseInt( that.$element.find('.lightbox-content').css('padding-top') , 10);
padBottom = parseInt( that.$element.find('.lightbox-content').css('padding-bottom') , 10);
padLeft = parseInt( that.$element.find('.lightbox-content').css('padding-left') , 10);
padRight = parseInt( that.$element.find('.lightbox-content').css('padding-right') , 10);

// Load the image, we have to do this because if the image isn't already loaded we get a bad size
$image = that.$element.find('.lightbox-content').find('img:first');
if($image.length <= 0) return callbacks.fire();
preloader = new Image();
preloader.onload = function()
{
//$image.width = preloader.width;
//$image.height = preloader.height;
//return _this.sizeContainer(preloader.width, preloader.height);

// The image could be bigger than the window, that is an issue.
if( (preloader.width + padLeft + padRight) >= windowWidth)
{
originalWidth = preloader.width;
originalHeight = preloader.height;
preloader.width = windowWidth - padLeft - padRight;
preloader.height = originalHeight / originalWidth * preloader.width;
}

if( (preloader.height + padTop + padBottom) >= windowHeight)
{
originalWidth = preloader.width;
originalHeight = preloader.height;
preloader.height = windowHeight - padTop - padBottom;
preloader.width = originalWidth / originalHeight * preloader.height;
}
that.$element.find('.lightbox-dialog').css({
'position': 'fixed',
'width': preloader.width + padLeft + padRight,
'height': preloader.height + padTop + padBottom,
'top' : (windowHeight / 2) - ( (preloader.height + padTop + padBottom) / 2),
'left' : '50%',
'margin-left' : -1 * (preloader.width + padLeft + padRight) / 2
});
that.$element.find('.lightbox-content').css({
'width': preloader.width + padLeft + padRight,
'height': preloader.height + padTop + padBottom
});
$image.css({
'width': preloader.width,
'height': preloader.height
})

// We have everything sized!
callbacks.fire();
};
preloader.src = $image.attr('src');
};
Lightbox.prototype.setSize = function(width, height) {
var originalWidth,
originalHeight;

var windowHeight = $(window).height();
var windowWidth = $(window).width();

var padTop = parseInt(this.$element.find('.lightbox-content')
.css('padding-top'), 10);
var padBottom = parseInt(this.$element.find('.lightbox-content')
.css('padding-bottom'), 10);
var padLeft = parseInt(this.$element.find('.lightbox-content')
.css('padding-left'), 10);
var padRight = parseInt(this.$element.find('.lightbox-content')
.css('padding-right'), 10);

// The image could be bigger than the window, that is an issue.
if( (width + padLeft + padRight) >= windowWidth)
{
originalWidth = width;
originalHeight = height;
width = windowWidth - padLeft - padRight;
height = originalHeight / originalWidth * width;
}

if( (height + padTop + padBottom) >= windowHeight)
{
originalWidth = width;
originalHeight = height;
height = windowHeight - padTop - padBottom;
width = originalWidth / originalHeight * height;
}

this.$element.css({
'position': 'fixed',
'width': width + padLeft + padRight,
'height': height + padTop + padBottom,
'top' : (windowHeight / 2) - ( (height + padTop + padBottom) / 2),
'left' : '50%',
'margin-left' : -1 * (width + padLeft + padRight) / 2
});
this.$element.find('.lightbox-content').css({
'width': width,
'height': height
});
};

Lightbox.prototype.preloadSize = function(callback)
{
var callbacks = $.Callbacks();
if(callback) callbacks.add( callback );

// first check preset width and height.
if(this.options.width && this.options.height) {
this.setSize(this.options.width, this.options.height);
callbacks.fire();
return;
}

// Load the image, we have to do this because if the image isn't already loaded we get a bad size
var that = this, preloader;
var $image = this.$element.find('.lightbox-content img:first');
if($image.length) {
preloader = new Image();
preloader.onload = function() {
that.setSize(preloader.width, preloader.height);
callbacks.fire();
};
preloader.src = $image.attr('src');
return;
}
// If no image is present check for video presence
var $video = this.$element.find('.lightbox-content video:first');
if($video.length) {
preloader = document.createElement('video');
$(preloader).on('loadedmetadata', function() {
that.setSize(preloader.videoWidth, preloader.videoHeight);
callbacks.fire();
});
preloader.preload = 'metadata';
preloader.src = $video.find('source:first').attr('src');
return;
}
throw new Error("If no video or image is included in the lightbox, a pre-set width or height must be specified.");
};


// LIGHTBOX PLUGIN DEFINITION
Expand Down