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<?php
require_once dirname( __FILE__ ) . '/tiled-gallery-layout.php';
require_once dirname( __FILE__ ) . '/tiled-gallery-shape.php';
require_once dirname( __FILE__ ) . '/tiled-gallery-item.php';
class Jetpack_Tiled_Gallery_Layout_Rectangular extends Jetpack_Tiled_Gallery_Layout {
protected $type = 'rectangular';
public function HTML( $context = array() ) {
$grouper = new Jetpack_Tiled_Gallery_Grouper( $this->attachments );
Jetpack_Tiled_Gallery_Shape::reset_last_shape();
return parent::HTML( array( 'rows' => $grouper->grouped_images ) );
}
}
class Jetpack_Tiled_Gallery_Layout_Columns extends Jetpack_Tiled_Gallery_Layout {
protected $type = 'rectangular'; // It doesn't need separate template for now
public function HTML( $context = array() ) {
$grouper = new Jetpack_Tiled_Gallery_Grouper( $this->attachments, array( 'Three_Columns', 'Two' ) );
return parent::HTML( array( 'rows' => $grouper->grouped_images ) );
}
}
// Alias
class Jetpack_Tiled_Gallery_Layout_Rectangle extends Jetpack_Tiled_Gallery_Layout_Rectangular {}
// Image grouping and HTML generation logic
class Jetpack_Tiled_Gallery_Grouper {
public $margin = 4;
// This list is ordered. If you put a shape that's likely to occur on top, it will happen all the time.
public $shapes = array(
'Reverse_Symmetric_Row',
'Long_Symmetric_Row',
'Symmetric_Row',
'One_Three',
'Three_One',
'One_Two',
'Five',
'Four',
'Three',
'Two_One',
'Panoramic'
);
public function __construct( $attachments, $shapes = array() ) {
$content_width = Jetpack_Tiled_Gallery::get_content_width();
$this->overwrite_shapes( $shapes );
$this->last_shape = '';
$this->images = $this->get_images_with_sizes( $attachments );
$this->grouped_images = $this->get_grouped_images();
$this->apply_content_width( $content_width );
}
public function overwrite_shapes( $shapes ) {
if ( ! empty( $shapes ) ) {
$this->shapes = $shapes;
}
}
public function get_current_row_size() {
$images_left = count( $this->images );
if ( $images_left < 3 )
return array_fill( 0, $images_left, 1 );
foreach ( $this->shapes as $shape_name ) {
$class_name = "Jetpack_Tiled_Gallery_$shape_name";
$shape = new $class_name( $this->images );
if ( $shape->is_possible() ) {
Jetpack_Tiled_Gallery_Shape::set_last_shape( $class_name );
return $shape->shape;
}
}
Jetpack_Tiled_Gallery_Shape::set_last_shape( 'Two' );
return array( 1, 1 );
}
public function get_images_with_sizes( $attachments ) {
$images_with_sizes = array();
foreach ( $attachments as $image ) {
$meta = wp_get_attachment_metadata( $image->ID );
$image->width_orig = ( isset( $meta['width'] ) && $meta['width'] > 0 )? $meta['width'] : 1;
$image->height_orig = ( isset( $meta['height'] ) && $meta['height'] > 0 )? $meta['height'] : 1;
$image->ratio = $image->width_orig / $image->height_orig;
$image->ratio = $image->ratio? $image->ratio : 1;
$images_with_sizes[] = $image;
}
return $images_with_sizes;
}
public function read_row() {
$vector = $this->get_current_row_size();
$row = array();
foreach ( $vector as $group_size ) {
$row[] = new Jetpack_Tiled_Gallery_Group( array_splice( $this->images, 0, $group_size ) );
}
return $row;
}
public function get_grouped_images() {
$grouped_images = array();
while( !empty( $this->images ) ) {
$grouped_images[] = new Jetpack_Tiled_Gallery_Row( $this->read_row() );
}
return $grouped_images;
}
// todo: split in functions
// todo: do not stretch images
public function apply_content_width( $width ) {
foreach ( $this->grouped_images as $row ) {
$row->width = $width;
$row->raw_height = 1 / $row->ratio * ( $width - $this->margin * ( count( $row->groups ) - $row->weighted_ratio ) );
$row->height = round( $row->raw_height );
$this->calculate_group_sizes( $row );
}
}
public function calculate_group_sizes( $row ) {
// Storing the calculated group heights in an array for rounding them later while preserving their sum
// This fixes the rounding error that can lead to a few ugly pixels sticking out in the gallery
$group_widths_array = array();
foreach ( $row->groups as $group ) {
$group->height = $row->height;
// Storing the raw calculations in a separate property to prevent rounding errors from cascading down and for diagnostics
$group->raw_width = ( $row->raw_height - $this->margin * count( $group->images ) ) * $group->ratio + $this->margin;
$group_widths_array[] = $group->raw_width;
}
$rounded_group_widths_array = Jetpack_Constrained_Array_Rounding::get_rounded_constrained_array( $group_widths_array, $row->width );
foreach ( $row->groups as $group ) {
$group->width = array_shift( $rounded_group_widths_array );
$this->calculate_image_sizes( $group );
}
}
public function calculate_image_sizes( $group ) {
// Storing the calculated image heights in an array for rounding them later while preserving their sum
// This fixes the rounding error that can lead to a few ugly pixels sticking out in the gallery
$image_heights_array = array();
foreach ( $group->images as $image ) {
$image->width = $group->width - $this->margin;
// Storing the raw calculations in a separate property for diagnostics
$image->raw_height = ( $group->raw_width - $this->margin ) / $image->ratio;
$image_heights_array[] = $image->raw_height;
}
$image_height_sum = $group->height - count( $image_heights_array ) * $this->margin;
$rounded_image_heights_array = Jetpack_Constrained_Array_Rounding::get_rounded_constrained_array( $image_heights_array, $image_height_sum );
foreach ( $group->images as $image ) {
$image->height = array_shift( $rounded_image_heights_array );
}
}
}
class Jetpack_Tiled_Gallery_Row {
public function __construct( $groups ) {
$this->groups = $groups;
$this->ratio = $this->get_ratio();
$this->weighted_ratio = $this->get_weighted_ratio();
}
public function get_ratio() {
$ratio = 0;
foreach ( $this->groups as $group ) {
$ratio += $group->ratio;
}
return $ratio > 0? $ratio : 1;
}
public function get_weighted_ratio() {
$weighted_ratio = 0;
foreach ( $this->groups as $group ) {
$weighted_ratio += $group->ratio * count( $group->images );
}
return $weighted_ratio > 0 ? $weighted_ratio : 1;
}
}
class Jetpack_Tiled_Gallery_Group {
public function __construct( $images ) {
$this->images = $images;
$this->ratio = $this->get_ratio();
}
public function get_ratio() {
$ratio = 0;
foreach ( $this->images as $image ) {
if ( $image->ratio )
$ratio += 1/$image->ratio;
}
if ( !$ratio )
return 1;
return 1/$ratio;
}
public function items( $needs_attachment_link, $grayscale ) {
$items = array();
foreach ( $this->images as $image ) {
$items[] = new Jetpack_Tiled_Gallery_Rectangular_Item( $image, $needs_attachment_link, $grayscale );
}
return $items;
}
}
|
GitWeb