Initial commit

2026-08-30 22:02:02 +00:00
commit b6bd2277f5
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+<?php
+
+/**
+ * BlendModeTest.php
+ *
+ * @since     2026-07-17
+ * @category  Library
+ * @package   PdfGraph
+ * @author    Nicola Asuni <info@tecnick.com>
+ * @copyright 2011-2026 Nicola Asuni - Tecnick.com LTD
+ * @license   https://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE)
+ * @link      https://github.com/tecnickcom/tc-lib-pdf-graph
+ *
+ * This file is part of tc-lib-pdf-graph software library.
+ */
+
+namespace Test;
+
+use Com\Tecnick\Pdf\Graph\BlendMode;
+
+/**
+ * BlendMode enum test
+ *
+ * @since     2026-07-17
+ * @category  Library
+ * @package   PdfGraph
+ * @author    Nicola Asuni <info@tecnick.com>
+ * @copyright 2011-2026 Nicola Asuni - Tecnick.com LTD
+ * @license   https://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE)
+ * @link      https://github.com/tecnickcom/tc-lib-pdf-graph
+ */
+class BlendModeTest extends TestUtil
+{
+    protected function getTestObject(): \Com\Tecnick\Pdf\Graph\Draw
+    {
+        return new \Com\Tecnick\Pdf\Graph\Draw(1, 0, 0, new \Com\Tecnick\Color\Pdf(), $this->getEncryptObject(), false);
+    }
+
+    public function testCaseBackingValues(): void
+    {
+        $this->assertSame('Normal', BlendMode::Normal->value);
+        $this->assertSame('Multiply', BlendMode::Multiply->value);
+        $this->assertSame('Luminosity', BlendMode::Luminosity->value);
+        $this->assertCount(16, BlendMode::cases());
+    }
+
+    public function testFromLooseCanonical(): void
+    {
+        $this->assertSame(BlendMode::Multiply, BlendMode::fromLoose('Multiply'));
+        $this->assertSame(BlendMode::ColorBurn, BlendMode::fromLoose('ColorBurn'));
+    }
+
+    public function testFromLooseStripsLeadingSlash(): void
+    {
+        $this->assertSame(BlendMode::Screen, BlendMode::fromLoose('/Screen'));
+    }
+
+    public function testFromLooseFallsBackToNormal(): void
+    {
+        $this->assertSame(BlendMode::Normal, BlendMode::fromLoose('bogus'));
+        $this->assertSame(BlendMode::Normal, BlendMode::fromLoose(''));
+        // case sensitive: wrong case is unknown and falls back
+        $this->assertSame(BlendMode::Normal, BlendMode::fromLoose('multiply'));
+    }
+
+    public function testFromLoosePassesThroughEnumInstance(): void
+    {
+        $this->assertSame(BlendMode::HardLight, BlendMode::fromLoose(BlendMode::HardLight));
+    }
+
+    public function testFromLooseRoundTrip(): void
+    {
+        foreach (BlendMode::cases() as $case) {
+            $this->assertSame($case, BlendMode::fromLoose($case->value));
+        }
+    }
+
+    /**
+     * The widened getAlpha() accepts a BlendMode enum; equal blend modes dedupe
+     * to the same ExtGState reference, different ones do not.
+     *
+     * @throws \Com\Tecnick\Pdf\Graph\Exception
+     */
+    public function testGetAlphaAcceptsEnum(): void
+    {
+        $draw = $this->getTestObject();
+        $fromEnum = $draw->getAlpha(1.0, BlendMode::Multiply);
+        $this->assertSame($fromEnum, $draw->getAlpha(1.0, 'Multiply'));
+        $this->assertSame($fromEnum, $draw->getAlpha(1.0, '/Multiply'));
+        $this->assertNotSame($fromEnum, $draw->getAlpha(1.0, BlendMode::Screen));
+        // unknown blend mode falls back to Normal
+        $this->assertSame($draw->getAlpha(1.0, 'Normal'), $draw->getAlpha(1.0, 'bogus'));
+    }
+}