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wp-content/plugins/smart-slider-3/Nextend/SmartSlider3/Widget/WidgetPlacementAdvanced.php

@@ -0,0 +1,93 @@
+<?php
+
+
+namespace Nextend\SmartSlider3\Widget;
+
+
+use Nextend\Framework\View\Html;
+
+class WidgetPlacementAdvanced extends WidgetPlacement {
+
+    protected $items = array();
+
+    protected $variables = array();
+
+    public function add($renderCallback, $horizontalSide, $horizontalPosition, $horizontalUnit, $verticalSide, $verticalPosition, $verticalUnit) {
+
+        $attributes = array(
+            'style' => ''
+        );
+
+        $transforms = array();
+
+        if (is_numeric($horizontalPosition)) {
+            $attributes['style'] .= $horizontalSide . ':' . $horizontalPosition . $horizontalUnit . ';';
+        } else {
+            $attributes['style'] .= $horizontalSide . ':0;';
+
+            $transforms[] = 'translateX(' . $this->toCSSCalc($horizontalSide == 'left' ? 1 : -1, $horizontalPosition) . ')';
+        }
+
+        if (is_numeric($verticalPosition)) {
+            $attributes['style'] .= $verticalSide . ':' . $verticalPosition . $verticalUnit . ';';
+        } else {
+            $attributes['style'] .= $verticalSide . ':0;';
+
+            $transforms[] = 'translateY(' . $this->toCSSCalc($verticalSide == 'top' ? 1 : -1, $verticalPosition) . ')';
+        }
+
+        if (!empty($transforms)) {
+            $attributes['style'] .= 'transform:' . implode(' ', $transforms) . ';';
+        }
+
+        $this->items[] = array(
+            'renderCallback' => $renderCallback,
+            'attributes'     => $attributes
+        );
+    }
+
+
+    public function render() {
+
+        $out = '';
+        foreach ($this->items as $item) {
+            $out .= call_user_func($item['renderCallback'], $item['attributes']);
+        }
+
+        if (!empty($out)) {
+
+
+            return Html::tag('div', array(
+                'class'          => 'n2-ss-slider-controls n2-ss-slider-controls-' . $this->name,
+                'data-variables' => implode(',', array_unique($this->variables))
+            ), $out);
+        }
+
+        return '';
+    }
+
+    private function toCSSCalc($modifier, $expression) {
+
+        // Remove whitespaces
+        $expression = preg_replace('/\s+/', '', $expression);
+
+        // take care of minus symbol on single number
+        $expression = preg_replace('/([+\-*\/])[\-]/', '$1[minus]', $expression);
+
+        $expression = preg_replace('/[+\-*\/]/', ' $0 ', $expression);
+
+        $expression = str_replace('[minus]', '-1 * ', $expression);
+
+        preg_match_all('/[a-zA-Z][a-zA-Z0-9]*/', $expression, $matches);
+
+        foreach ($matches as $match) {
+            if (!empty($match)) {
+                $this->variables = array_merge($this->variables, $match);
+            }
+        }
+
+        $expression = preg_replace('/[a-zA-Z][a-zA-Z0-9]*/', 'var(--$0, 0)', $expression);
+
+        return 'calc(' . $modifier . 'px * (' . $expression . '))';
+    }
+}