From 0a5c7acaeab96b0a1a20e49382f3dce2a233142f Mon Sep 17 00:00:00 2001
From: Thomas <thomas@sctr.net>
Date: Wed, 8 Jan 2025 07:45:51 -0600
Subject: [PATCH] fixed crop for animations

---
 src/Modifiers/CropModifier.php            | 60 ++++++++++++++++-------
 tests/Unit/Modifiers/CropModifierTest.php | 23 +++++++++
 2 files changed, 64 insertions(+), 19 deletions(-)

diff --git a/src/Modifiers/CropModifier.php b/src/Modifiers/CropModifier.php
index 250b82d..856e171 100644
--- a/src/Modifiers/CropModifier.php
+++ b/src/Modifiers/CropModifier.php
@@ -8,7 +8,9 @@
 use Intervention\Image\Colors\Rgb\Channels\Blue;
 use Intervention\Image\Colors\Rgb\Channels\Green;
 use Intervention\Image\Colors\Rgb\Channels\Red;
+use Intervention\Image\Drivers\Vips\Core;
 use Intervention\Image\Exceptions\RuntimeException;
+use Intervention\Image\Interfaces\FrameInterface;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SizeInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
@@ -48,27 +50,14 @@ public function apply(ImageInterface $image): ImageInterface
                 )
             );
         } else {
-            $offset_x = $crop->pivot()->x() + $this->offset_x;
-            $offset_y = $crop->pivot()->y() + $this->offset_y;
-
-            $targetWidth = min($crop->width(), $originalSize->width());
-            $targetHeight = min($crop->height(), $originalSize->height());
-
-            $targetWidth = $targetWidth > $originalSize->width() ? $targetWidth + $offset_x : $targetWidth;
-            $targetHeight = $targetHeight > $originalSize->height() ? $targetHeight + $offset_y : $targetHeight;
-
-            $cropped = $image->core()->native()->crop(
-                max($offset_x, 0),
-                max($offset_y, 0),
-                $targetWidth,
-                $targetHeight
-            );
-
-            if ($crop->width() > $originalSize->width() || $cropped->height < $crop->height()) {
-                $cropped = $background->insert($cropped, max($offset_x * -1, 0), max($offset_y * -1, 0));
+            $frames = [];
+            foreach ($image as $frame) {
+                $frames[] = $frame->setNative($this->cropFrame($frame, $crop, $originalSize, $background));
             }
 
-            $image->core()->setNative($cropped);
+            $image->core()->setNative(
+                Core::replaceFrames($image->core()->native(), $frames)
+            );
         }
 
         return $image;
@@ -116,4 +105,37 @@ private function getInterestingPositions(): array
             Interesting::ALL,
         ]);
     }
+
+    private function cropFrame(
+        FrameInterface $frame,
+        SizeInterface $crop,
+        SizeInterface $originalSize,
+        VipsImage $background
+    ): VipsImage {
+        $offset_x = $crop->pivot()->x() + $this->offset_x;
+        $offset_y = $crop->pivot()->y() + $this->offset_y;
+
+        $targetWidth = min($crop->width(), $originalSize->width());
+        $targetHeight = min($crop->height(), $originalSize->height());
+
+        $targetWidth = $targetWidth > $originalSize->width() ? $targetWidth + $offset_x : $targetWidth;
+        $targetHeight = $targetHeight > $originalSize->height() ? $targetHeight + $offset_y : $targetHeight;
+
+        $cropped = $frame->native()->crop(
+            max($offset_x, 0),
+            max($offset_y, 0),
+            $targetWidth,
+            $targetHeight
+        );
+
+        if ($crop->width() > $originalSize->width() || $cropped->height < $crop->height()) {
+            $cropped = $background->insert(
+                $cropped,
+                max($offset_x * -1, 0),
+                max($offset_y * -1, 0)
+            );
+        }
+
+        return $cropped;
+    }
 }
diff --git a/tests/Unit/Modifiers/CropModifierTest.php b/tests/Unit/Modifiers/CropModifierTest.php
index a263ebd..444069b 100644
--- a/tests/Unit/Modifiers/CropModifierTest.php
+++ b/tests/Unit/Modifiers/CropModifierTest.php
@@ -4,6 +4,7 @@
 
 namespace Intervention\Image\Drivers\Vips\Tests\Unit\Modifiers;
 
+use Intervention\Image\Colors\Rgb\Color;
 use Intervention\Image\Drivers\Vips\Driver;
 use Intervention\Image\Drivers\Vips\Tests\BaseTestCase;
 use Intervention\Image\Modifiers\CropModifier;
@@ -65,4 +66,26 @@ public function testModifyCropSmart(): void
         $this->assertEquals(50, $image->height());
         $this->assertColor(255, 219, 154, 255, $image->pickColor(25, 25));
     }
+
+    public function testModifyCropAnimated(): void
+    {
+        $image = $this->readTestImage('animation.gif');
+        $image = $image->modify(new CropModifier(15, 15, 0, 0, position: 'center'));
+        $this->assertEquals(15, $image->width());
+        $this->assertEquals(15, $image->height());
+
+        $this->assertEquals(
+            array_map(fn(Color $color): string => $color->toHex(), $image->pickColors(8, 8)->toArray()),
+            ['ffa601', 'ffa601', 'ffa601', 'ffa601', '394b63', '394b63', '394b63', '394b63']
+        );
+    }
+
+    public function testModifyCropAnimatedSmart(): void
+    {
+        $image = $this->readTestImage('animation.gif');
+        $image = $image->modify(new CropModifier(15, 15, 0, 0, 'ff0000', 'interesting-attention'));
+        $this->assertEquals(15, $image->width());
+        $this->assertEquals(15, $image->height());
+        $this->assertColor(255, 166, 1, 255, $image->pickColor(8, 8));
+    }
 }