Add output method for PDF XOBjects

Author: nicolaasuni

VERSION

@@ -1 +1 @@
-2.0.9
+2.1.0

src/Spot.php

@@ -285,11 +285,34 @@ public function getPdfSpotResources(): string
             return '';
         }
 
-        $out = '/ColorSpace << ';
+        $out = '/ColorSpace <<';
+
         foreach ($this->spot_colors as $spot_color) {
-            $out .= '/CS' . $spot_color['i'] . ' ' . $spot_color['n'] . ' 0 R ';
+            $out .= ' /CS' . $spot_color['i'] . ' ' . $spot_color['n'] . ' 0 R';
+        }
+
+        return $out . ' >>' . "\n";
+    }
+
+    /**
+     * Returns the PDF command to output Spot color resources.
+     *
+     * @param array<string> $keys Array of font keys.
+     *
+     * @return string PDF command
+     */
+    public function getPdfSpotResourcesByKeys(array $keys): string
+    {
+        if (empty($keys)) {
+            return '';
+        }
+
+        $out = '/ColorSpace <<';
+
+        foreach ($keys as $key) {
+            $out .= ' /CS' . $this->spot_colors[$key]['i'] . ' ' . $this->spot_colors[$key]['n'] . ' 0 R';
         }
 
-        return $out . ('>>' . "\n");
+        return $out . ' >>' . "\n";
     }
 }

test/SpotTest.php

@@ -170,5 +170,8 @@ public function testGetPdfSpotObjects(): void
 
         $res = $spot->getPdfSpotResources();
         $this->assertEquals('/ColorSpace << /CS1 2 0 R /CS2 3 0 R /CS3 4 0 R /CS4 5 0 R /CS5 6 0 R >>' . "\n", $res);
+
+        $resk = $spot->getPdfSpotResourcesByKeys(['cyan','yellow']);
+        $this->assertEquals('/ColorSpace << /CS2 3 0 R /CS4 5 0 R >>' . "\n", $resk);
     }
 }