From e58a7bcd94b60ad4b01bb249f8ab7249bb9d6e62 Mon Sep 17 00:00:00 2001
From: Alex Thomassen <alex@thomassen.xyz>
Date: Wed, 19 Jun 2024 19:52:42 +0000
Subject: [PATCH] Center that shit

---
 generate.php | 48 ++++++++++++++++++++++++++++++++++++++++++++++--
 index.html   |  4 ++++
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/generate.php b/generate.php
index 66426d2..1e454e2 100644
--- a/generate.php
+++ b/generate.php
@@ -15,6 +15,7 @@ $validFiles = [
         'positions' => [
             'top' => ['x' => 125, 'y' => 270, 'maxWidth' => 262],
             'bottom' => ['x' => 150, 'y' => 350, 'maxWidth' => 216],
+            'bottomSecond' => ['x' => 150, 'y' => 400, 'maxWidth' => 216],
         ],
     ],
 ];
@@ -22,6 +23,7 @@ $validFiles = [
 $template = $_GET['template'] ?? '';
 $topText = $_GET['top'] ?? '';
 $bottomText = $_GET['bottom'] ?? '';
+$bottomSecondText = $_GET['bottomSecond'] ?? '';
 
 if (!isset($validFiles[$template]) || !file_exists(sprintf('%s/%s', $templatesDirectory, $template))) {
     die('Invalid template');
@@ -31,23 +33,65 @@ if (empty($topText) || empty($bottomText)) {
     die('Invalid text');
 }
 
+/**
+ * Get centered X coordinate
+ *
+ * @param int $originalX
+ * @param int $maxWidth
+ * @param Imagine\Image\BoxInterface $textBox
+ *
+ * @return int
+ */
+function getXCoord($originalX, $maxWidth, $textBox)
+{
+    $result = $originalX + ($maxWidth - $textBox->getWidth()) / 2;
+
+    if ($result < 1) {
+        return 1;
+    }
+
+    return (int) $result;
+}
+
 $templateFile = sprintf('%s/%s', $templatesDirectory, $template);
 $positions = $validFiles[$template]['positions'];
 $imagine = new Imagine();
 
 $palette = new RGB();
 $colorBlack = $palette->color('#000000', 100);
+$transparent = $palette->color('#FFFFFF', 0);
 
 $image = $imagine->open($templateFile);
 
 $font = new Font($_ENV['FONT_LOCATION'], 12, $colorBlack);
+$transparentFont = new Font($_ENV['FONT_LOCATION'], 0, $transparent);
 
 $top = $positions['top'];
 $bottom = $positions['bottom'];
-$topPosition = new Point($top['x'], $top['y']);
-$bottomPosition = new Point($bottom['x'], $bottom['y']);
+$bottomSecond = $positions['bottomSecond'];
+
+$topBox = $font->box($topText);
+$topX = getXCoord($top['x'], $top['maxWidth'], $topBox);
+$topY = $top['y'];
+
+$bottomBox = $font->box($bottomText);
+$bottomX = getXCoord($bottom['x'], $bottom['maxWidth'], $bottomBox);
+$bottomY = $bottom['y'];
+
+$bottomSecondBox = $transparentFont->box('placeholder');
+if (!empty($bottomSecondText)) {
+    $bottomSecondBox = $font->box($bottomSecondText);
+}
+
+$bottomSecondX = getXCoord($bottomSecond['x'], $bottomSecond['maxWidth'], $bottomSecondBox);
+$bottomSecondY = $bottomSecond['y'];
+
+$topPosition = new Point($topX, $topY);
+$bottomPosition = new Point($bottomX, $bottomY);
+$bottomSecondPosition = new Point($bottomSecondX, $bottomSecondY);
 
 $image->draw()->text($topText, $font, $topPosition, 0, $top['maxWidth'] ?? null);
 $image->draw()->text($bottomText, $font, $bottomPosition, 0, $bottom['maxWidth'] ?? null);
+$image->draw()->text($bottomSecondText, $font, $bottomSecondPosition, 0, $bottomSecond['maxWidth'] ?? null);
 
 $image->show('png');
diff --git a/index.html b/index.html
index f079451..303d297 100644
--- a/index.html
+++ b/index.html
@@ -25,6 +25,9 @@
         <label for="bottom">gRUnNLAG:</label>
         <input type="text" name="bottom" placeholder="Text">
 
+        <label for="bottomSecond">gRUnNLAG #2 (Valgfritt):</label>
+        <input type="text" name="bottomSecond" placeholder="Text">
+
         <button type="submit" id="submit">Generate</button>
     </form>
 
@@ -49,6 +52,7 @@
             url.searchParams.set('template', form.elements.template.value);
             url.searchParams.set('top', form.elements.top.value);
             url.searchParams.set('bottom', form.elements.bottom.value);
+            url.searchParams.set('bottomSecond', form.elements.bottomSecond.value);
 
             preview.src = url.href;
             preview.classList.remove('hidden');