forked from 4ducky/4ducky
Move the original PHP site into legacy/
The PHP sources, templates and old jQuery-based scripts move unchanged into legacy/ for reference. Shared assets (media/, images/, favicon.ico, the default avatar) stay at the repository root. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Claude Opus 5.5
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<?php
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/*
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This class takes an array of images and sorts them into a grid view.
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This is the equivalent of the javascript gridSolve function in picturelicious.js
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with the difference that it runs server side of course.
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*/
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require_once( 'lib/config.php' );
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class GridView {
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public $height = 0;
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protected $grid = array();
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protected $gridWidth = 20;
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public function __construct( $gridWidth = 20 ) {
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$this->gridWidth = $gridWidth;
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$this->grid = array_fill( 0, $this->gridWidth, 0 );
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}
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// solve expects an array with thumbnails with the keys name and score
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public function solve( &$thumbs ) {
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if( !is_array( $thumbs ) ) {
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return false;
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}
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// Order thumbs by importance (score), but leave the keys as they are
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uasort( $thumbs, array( $this, 'compareScore' ) );
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// How many thumbs get which CSS-Class? The first n thumbnails
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// get the biggest box etc.
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$total = count( $thumbs );
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$classCounts = array();
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$currentCount = 0;
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foreach( Config::$gridView['classes'] as $className => $gc ) {
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$currentCount += $gc['percentage'] * $total;
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$classCounts[$className] = ceil( $currentCount );
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}
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// Assign a CSS-Class to each thumb
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$currentMax = -1;
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$currentClass = '';
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$j = 0;
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foreach( array_keys( $thumbs ) as $i ) {
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if( $j >= $currentMax ) {
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list( $currentClass, $currentMax ) = each( $classCounts );
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}
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$j++;
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$thumbs[$i]['class'] = $currentClass;
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$thumbs[$i]['thumb'] = Config::$absolutePath . Config::$images['thumbPath'] .
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str_replace( '-', '/', substr( $thumbs[$i]['logged'], 0, 7 ) )
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.'/'. Config::$gridView['classes'][$currentClass]['dir']
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.'/'. $thumbs[$i]['thumb'];
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}
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// Sort the thumbs back in the order we got them
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ksort( $thumbs );
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// Now that every thumb has a CSS-Class, we can sort them into our grid
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for( $i = 0; $i < $total; $i++ ) {
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list( $x, $y ) = $this->insert(
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Config::$gridView['classes'][$thumbs[$i]['class']]['width'],
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Config::$gridView['classes'][$thumbs[$i]['class']]['height']
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);
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$thumbs[$i]['left'] = $x * Config::$gridView['gridSize'];
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$thumbs[$i]['top'] = $y * Config::$gridView['gridSize'];
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}
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// Calculate the final grid height
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for( $i = 0; $i < $this->gridWidth; $i++ ) {
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if( $this->grid[$i] > $this->height ) {
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$this->height = $this->grid[$i];
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}
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}
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return true;
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}
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// Callback for uasort()
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protected function compareScore( $a, $b ) {
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return $a['score'] > $b['score'] ?
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1 :
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( $a['score'] == $b['score'] && $a['votes'] > $b['votes'] ?
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1 :
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-1
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);
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}
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protected function insert( $boxWidth, $boxHeight ) {
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// Height of the grid
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$maxHeight = 0;
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// Height of the grid at the last position
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$currentHeight = $this->grid[0];
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// Find free spots within the grid and collect them in an arry
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// A spot is a area in the grid with equal height
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$spotWidth = 0; // Width of the spot in grid units
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$spotLeft = 0; // Position in the grid (relative to left border)
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$freeSpots = array();
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for( $i = 0; $i < $this->gridWidth; $i++ ) {
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// Height is the same as at the last position?
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// -> increase the size of this spot
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if( $currentHeight == $this->grid[$i] ) {
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$spotWidth++;
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}
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// The height is different from the last position, and our current spot
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// is wider than 0
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if( ( $currentHeight != $this->grid[$i] || $i+1 == $this->gridWidth) && $spotWidth > 0 ) {
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$freeSpots[] = array( 'width' =>$spotWidth, 'left' => $spotLeft, 'height' => $currentHeight );
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$spotWidth = 1;
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$spotLeft = $i;
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// Make sure we don't miss the last one
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if( $currentHeight != $this->grid[$i] && $i+1 == $this->gridWidth ) {
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$freeSpots[] = array( 'width' =>$spotWidth, 'left' => $spotLeft, 'height' => $this->grid[$i] );
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}
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}
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$currentHeight = $this->grid[$i];
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$maxHeight = max( $maxHeight, $this->grid[$i] );
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}
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// Loop through all found spots and rate them, based on their size and height
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// This way the smallest possible spot in the lowest possible height is filled
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$targetHeight = 0;
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$targetLeft = 0;
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// Default spot (left border) if we don't find a better one
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for( $i = 0; $i < $boxWidth; $i++ ) {
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if( $this->grid[$i] > $targetHeight ) {
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$targetHeight = $this->grid[$i];
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}
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}
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$bestScore = -1;
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foreach( array_keys( $freeSpots ) as $i ) {
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// Difference of the height of this spot to the total height of the grid
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$heightScore = ( $maxHeight - $freeSpots[$i]['height'] );
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// Relation of the required and the available space
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$widthScore = $boxWidth / $freeSpots[$i]['width'];
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// The score for this spot is calculated by these both criteria
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$score = $heightScore * $heightScore + $widthScore * 2;
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// Is the score for this spot higher than for the last one we found?
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if( $freeSpots[$i]['width'] >= $boxWidth && $score > $bestScore ) {
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$targetHeight = $freeSpots[$i]['height'];
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$targetLeft = $freeSpots[$i]['left'];
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$bestScore = $score;
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}
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}
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$newHeight = $targetHeight + $boxHeight;
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// Adjust grid height
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for( $j = 0; $j < $boxWidth; $j++ ) {
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$this->grid[$targetLeft + $j] = $newHeight;
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}
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return array( $targetLeft, $targetHeight );
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}
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}
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?>
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