mirror of
https://github.com/flynx/ImageGrid.git
synced 2025-10-29 18:30:09 +00:00
287 lines
7.5 KiB
JavaScript
Executable File
287 lines
7.5 KiB
JavaScript
Executable File
/*********************************************************************/
|
|
|
|
/*
|
|
* The folowing two functions will get the vertical and horizontal
|
|
* distance components between the pints a and A, centers of the small
|
|
* and large squares respectively.
|
|
* One of the squares is .field and the other is .container,
|
|
* which is small or big is not important.
|
|
*
|
|
* +---------------+-------+
|
|
* | | |
|
|
* | | |
|
|
* | + a . . | . . . | . +
|
|
* | . | | +- getCurrentVerticalOffset(...)
|
|
* | . + A | . . . | . +
|
|
* +---------------+ |
|
|
* | . . |
|
|
* | . . |
|
|
* | . . |
|
|
* +-----------------------+
|
|
* . .
|
|
* +-+-+
|
|
* +------------------- getCurrentHorizontalOffset(...)
|
|
*
|
|
*
|
|
* Adding this distance to margins of one of the sqares will effectively
|
|
* allign the two points.
|
|
*
|
|
* NOTE: neither function accunts for field margins.
|
|
*
|
|
*/
|
|
|
|
// get the vertical offset of the center of square from center of container
|
|
// NOTE: this does not account for field margins
|
|
function getCurrentVerticalOffset(image){
|
|
if(image == null){
|
|
image = $('.image.current')
|
|
}
|
|
|
|
//var zoom = $('.field').css('zoom')
|
|
var zoom = getElementScale($('.field'))
|
|
|
|
var ribbons = $('.ribbon')
|
|
var ribbon = image.parents('.ribbon')
|
|
var images = ribbon.children('.image')
|
|
|
|
// vertical...
|
|
var H = $('.container').height()
|
|
var h = ribbons.outerHeight(true)
|
|
// margin...
|
|
var mh = h - ribbons.outerHeight()
|
|
// current ribbon position (1-based)
|
|
var rn = ribbons.index(ribbon) + 1
|
|
// XXX compensating for margin error buildup... really odd!
|
|
// ...why is this still different for the first three ribbons?!
|
|
// ....sub-pixel error?
|
|
// relative position to field...
|
|
// XXX is there a better way to get this?
|
|
var t = rn * (h - mh/2)
|
|
|
|
return -t + H/2 + h/2
|
|
}
|
|
|
|
// get the horizontal offset of the center of square from center of container
|
|
// NOTE: this does not account for field margins
|
|
function getCurrentHorizontalOffset(image){
|
|
if(image == null){
|
|
image = $('.image.current')
|
|
}
|
|
|
|
//var zoom = $('.field').css('zoom')
|
|
var zoom = getElementScale($('.field'))
|
|
|
|
var ribbon = image.parents('.ribbon')
|
|
var images = ribbon.children('.image')
|
|
|
|
var W = $('.container').width()
|
|
var w = images.outerWidth(true)
|
|
// margin...
|
|
// XXX do we need this?
|
|
var mw = w - images.outerWidth()
|
|
// current square position (1-based)
|
|
var sn = images.index(image) + 1
|
|
var l = sn * (w - mw/2)
|
|
|
|
return -l + W/2 + w/2
|
|
}
|
|
|
|
function centerSquare(){
|
|
|
|
$('.field').css({
|
|
'margin-top': getCurrentVerticalOffset()
|
|
})
|
|
|
|
// horizontal...
|
|
alignRibbon()
|
|
|
|
centerCurrentImage()
|
|
}
|
|
|
|
function alignRibbon(image, position){
|
|
// default values...
|
|
if(image == null){
|
|
image = $('.image.current')
|
|
}
|
|
if(position == null){
|
|
position = 'center'
|
|
}
|
|
|
|
var ribbon = image.parents('.ribbon')
|
|
|
|
// account for margined field...
|
|
// NOTE: this enables us to cheat and shift all the ribbons just
|
|
// by changing field margin-left...
|
|
var cml = parseFloat($('.field').css('margin-left'))
|
|
if(!cml){
|
|
cml = 0
|
|
}
|
|
var h_offset = getCurrentHorizontalOffset(image) - cml
|
|
var w = $('.image').outerWidth(true)
|
|
|
|
switch(position){
|
|
case 'before':
|
|
ribbon.css({'margin-left': h_offset + w/2})
|
|
return true
|
|
case 'center':
|
|
ribbon.css({'margin-left': h_offset})
|
|
return true
|
|
case 'after':
|
|
ribbon.css({'margin-left': h_offset - w/2})
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
/* Set the transform-origin to the center of the current view...
|
|
*/
|
|
// XXX this appears to be wrong....
|
|
function centerOrigin(){
|
|
var mt = parseFloat($('.field').css('margin-top'))
|
|
var ml = parseFloat($('.field').css('margin-left'))
|
|
var cml = parseFloat($('.current.ribbon').css('margin-left'))
|
|
|
|
var t = parseFloat($('.field').css('top'))
|
|
var l = parseFloat($('.field').css('left'))
|
|
var w = $('.field').width()
|
|
var h = $('.field').height()
|
|
var W = $('.container').width()
|
|
var H = $('.container').height()
|
|
|
|
//var ot = mt + H/2 + t
|
|
//var ol = ml + W/2 + l
|
|
|
|
var ot = -getCurrentVerticalOffset() + H/2 - t
|
|
var ol = -ml + W/2 - l
|
|
|
|
$('.field').css({
|
|
'transform-origin': ol + 'px ' + ot + 'px',
|
|
'-o-transform-origin': ol + 'px ' + ot + 'px',
|
|
'-moz-transform-origin': ol + 'px ' + ot + 'px',
|
|
'-webkit-transform-origin': ol + 'px ' + ot + 'px',
|
|
'-ms-transform-origin': ol + 'px ' + ot + 'px'
|
|
})
|
|
|
|
// XXX for debugging...
|
|
$('.origin-marker').css({
|
|
'top': ot,
|
|
'left': ol
|
|
})
|
|
}
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
|
|
// XXX need to make this work for % values...
|
|
// XXX make this usable as an event handler for .resize(...) event...
|
|
// XXX this does not account for zoom correctly...
|
|
function fieldSize(W, H){
|
|
var oW = $('.container').width()
|
|
var oH = $('.container').height()
|
|
|
|
//var zoom = $('.field').css('zoom')
|
|
var zoom = getElementScale($('.field'))
|
|
|
|
$('.container').css({
|
|
'width': W,
|
|
'height': H
|
|
})
|
|
|
|
// shift the field...
|
|
$('.field').css({
|
|
'margin-top': (parseFloat($('.field').css('margin-top')) + (H-oH)/2),
|
|
'margin-left': (parseFloat($('.field').css('margin-left')) + (W-oW)/2)
|
|
})
|
|
}
|
|
|
|
function centerCurrentImage(){
|
|
$('.field')
|
|
.css({
|
|
'top': 0,
|
|
'left': 0
|
|
})
|
|
// do this after animations are done...
|
|
.one("webkitTransitionEnd oTransitionEnd msTransitionEnd transitionend", centerOrigin)
|
|
// this is repeated intentionally...
|
|
// ...needed for small shifts, while the after-animation event
|
|
// is for large moves.
|
|
centerOrigin()
|
|
}
|
|
|
|
|
|
/*********************************************************************/
|
|
|
|
// NOTE: this will only return a single scale value...
|
|
function getElementScale(elem){
|
|
//var transform = elem.css('transform')
|
|
var vendors = ['o', 'moz', 'ms', 'webkit']
|
|
var transform = elem.css('transform')
|
|
var res
|
|
|
|
// go through vendor prefixes... (hate this!)
|
|
if(!transform || transform == 'none'){
|
|
for(var i in vendors){
|
|
transform = elem.css('-' + vendors[i] + '-transform')
|
|
if(transform && transform != 'none'){
|
|
break
|
|
}
|
|
}
|
|
}
|
|
// no transform is set...
|
|
if(!transform || transform == 'none'){
|
|
return 1
|
|
}
|
|
// get the scale value -- first argument of scale/matrix...
|
|
return parseFloat((/(scale|matrix)\(([^,]*),.*\)/).exec(transform)[2])
|
|
}
|
|
// XXX
|
|
function setElementScale(elem, scale){
|
|
}
|
|
|
|
// XXX this appears to be broken -- for some reason the current scale does not change...
|
|
function zoomContainerBy(factor){
|
|
var zoom = getElementScale($('.field'))*factor
|
|
|
|
setContainerZoom(zoom)
|
|
}
|
|
|
|
function setContainerZoom(zoom){
|
|
var H = $('.container').height()
|
|
var W = $('.container').width()
|
|
|
|
$('.field').css({
|
|
'transform': 'scale('+zoom+', '+zoom+')',
|
|
'-moz-transform': 'scale('+zoom+', '+zoom+')',
|
|
'-o-transform': 'scale('+zoom+', '+zoom+')',
|
|
'-ms-transform': 'scale('+zoom+', '+zoom+')',
|
|
'-webkit-transform': 'scale('+zoom+', '+zoom+')',
|
|
})
|
|
}
|
|
|
|
function fitImage(){
|
|
var H = $('.container').height()
|
|
var W = $('.container').width()
|
|
|
|
var h = $('.image.current').height()
|
|
var w = $('.image.current').width()
|
|
|
|
var f = Math.min(H/h, W/w)
|
|
|
|
setContainerZoom(f)
|
|
}
|
|
|
|
function fitThreeImages(){
|
|
var H = $('.container').height()
|
|
var W = $('.container').width()
|
|
|
|
var h = $('.image.current').height()
|
|
// XXX cheating, need to get three widths...
|
|
var w = $('.image.current').width()*3
|
|
|
|
var f = Math.min(H/h, W/w)
|
|
|
|
setContainerZoom(f)
|
|
}
|
|
|