2 * Show gallery captions when focused. Copied directly from jquery.mw-jump.js.
3 * Also Dynamically resize images to justify them.
9 galleries
= 'ul.mw-gallery-packed-overlay, ul.mw-gallery-packed-hover, ul.mw-gallery-packed';
11 // Is there a better way to detect a touchscreen? Current check taken from stack overflow.
12 isTouchScreen
= !!( window
.ontouchstart
!== undefined || window
.DocumentTouch
!== undefined && document
instanceof window
.DocumentTouch
);
14 if ( isTouchScreen
) {
15 // Always show the caption for a touch screen.
16 $( 'ul.mw-gallery-packed-hover' )
17 .addClass( 'mw-gallery-packed-overlay' )
18 .removeClass( 'mw-gallery-packed-hover' );
20 // Note use of just "a", not a.image, since we want this to trigger if a link in
21 // the caption receives focus
22 $( 'ul.mw-gallery-packed-hover li.gallerybox' ).on( 'focus blur', 'a', function ( e
) {
23 // Confusingly jQuery leaves e.type as focusout for delegated blur events
24 gettingFocus
= e
.type
!== 'blur' && e
.type
!== 'focusout';
25 $( this ).closest( 'li.gallerybox' ).toggleClass( 'mw-gallery-focused', gettingFocus
);
29 // Now on to justification.
30 // We may still get ragged edges if someone resizes their window. Could bind to
31 // that event, otoh do we really want to constantly be resizing galleries?
32 $( galleries
).each( function () {
40 $gallery
.children( 'li' ).each( function () {
41 // Math.floor to be paranoid if things are off by 0.00000000001
42 var top
= Math
.floor( $( this ).position().top
),
45 if ( top
!== lastTop
) {
46 rows
[rows
.length
] = [];
50 $img
= $this.find( 'div.thumb a.image img' );
51 if ( $img
.length
&& $img
[0].height
) {
52 imgHeight
= $img
[0].height
;
53 imgWidth
= $img
[0].width
;
55 // If we don't have a real image, get the containing divs width/height.
56 // Note that if we do have a real image, using this method will generally
57 // give the same answer, but can be different in the case of a very
58 // narrow image where extra padding is added.
59 imgHeight
= $this.children().children( 'div:first' ).height();
60 imgWidth
= $this.children().children( 'div:first' ).width();
63 // Hack to make an edge case work ok
64 if ( imgHeight
< 30 ) {
65 // Don't try and resize this item.
69 rows
[rows
.length
- 1][rows
[rows
.length
- 1].length
] = {
71 width
: $this.outerWidth(),
73 // XXX: can divide by 0 ever happen?
74 aspect
: imgWidth
/ imgHeight
,
75 captionWidth
: $this.children().children( 'div.gallerytextwrapper' ).width(),
101 for ( i
= 0; i
< rows
.length
; i
++ ) {
102 maxWidth
= $gallery
.width();
108 for ( j
= 0; j
< curRow
.length
; j
++ ) {
109 if ( curRowHeight
=== 0 ) {
110 if ( isFinite( curRow
[j
].height
) ) {
111 // Get the height of this row, by taking the first
112 // non-out of bounds height
113 curRowHeight
= curRow
[j
].height
;
117 if ( curRow
[j
].aspect
=== 0 || !isFinite( curRow
[j
].aspect
) ) {
118 // One of the dimensions are 0. Probably should
119 // not try to resize.
120 combinedPadding
+= curRow
[j
].width
;
122 combinedAspect
+= curRow
[j
].aspect
;
123 combinedPadding
+= curRow
[j
].width
- curRow
[j
].imgWidth
;
127 // Add some padding for inter-element spacing.
128 combinedPadding
+= 5 * curRow
.length
;
129 wantedWidth
= maxWidth
- combinedPadding
;
130 preferredHeight
= wantedWidth
/ combinedAspect
;
132 if ( preferredHeight
> curRowHeight
* 1.5 ) {
133 // Only expand at most 1.5 times current size
134 // As that's as high a resolution as we have.
135 // Also on the off chance there is a bug in this
136 // code, would prevent accidentally expanding to
137 // be 10 billion pixels wide.
138 if ( i
=== rows
.length
- 1 ) {
139 // If its the last row, and we can't fit it,
140 // don't make the entire row huge.
141 avgZoom
= ( totalZoom
/ ( rows
.length
- 1 ) ) * curRowHeight
;
142 if ( isFinite( avgZoom
) && avgZoom
>= 1 && avgZoom
<= 1.5 ) {
143 preferredHeight
= avgZoom
;
145 // Probably a single row gallery
146 preferredHeight
= curRowHeight
;
149 preferredHeight
= 1.5 * curRowHeight
;
152 if ( !isFinite( preferredHeight
) ) {
153 // This *definitely* should not happen.
157 if ( preferredHeight
< 5 ) {
158 // Well something clearly went wrong...
163 if ( preferredHeight
/ curRowHeight
> 1 ) {
164 totalZoom
+= preferredHeight
/ curRowHeight
;
166 // If we shrink, still consider that a zoom of 1
170 for ( j
= 0; j
< curRow
.length
; j
++ ) {
171 newWidth
= preferredHeight
* curRow
[j
].aspect
;
172 padding
= curRow
[j
].width
- curRow
[j
].imgWidth
;
173 $outerDiv
= curRow
[j
].$elm
;
174 $innerDiv
= $outerDiv
.children( 'div' ).first();
175 $imageDiv
= $innerDiv
.children( 'div.thumb' );
176 $imageElm
= $imageDiv
.find( 'img' ).first();
177 imageElm
= $imageElm
.length
? $imageElm
[0] : null;
178 $caption
= $outerDiv
.find( 'div.gallerytextwrapper' );
180 // Since we are going to re-adjust the height, the vertical
181 // centering margins need to be reset.
182 $imageDiv
.children( 'div' ).css( 'margin', '0px auto' );
184 if ( newWidth
< 60 || !isFinite( newWidth
) ) {
185 // Making something skinnier than this will mess up captions,
186 if ( newWidth
< 1 || !isFinite( newWidth
) ) {
187 $innerDiv
.height( preferredHeight
);
188 // Don't even try and touch the image size if it could mean
189 // making it disappear.
193 $outerDiv
.width( newWidth
+ padding
);
194 $innerDiv
.width( newWidth
+ padding
);
195 $imageDiv
.width( newWidth
);
196 $caption
.width( curRow
[j
].captionWidth
+ ( newWidth
- curRow
[j
].imgWidth
) );
200 // We don't always have an img, e.g. in the case of an invalid file.
201 imageElm
.width
= newWidth
;
202 imageElm
.height
= preferredHeight
;
205 $imageDiv
.height( preferredHeight
);