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2026-08-20 11:41:17 +00:00
commit 6949695eac
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+<?php
+
+/**
+ * StackUnicodeWidthTest.php
+ *
+ * @since     2026-05-05
+ * @category  Library
+ * @package   PdfFont
+ * @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-font
+ *
+ * This file is part of tc-lib-pdf-font software library.
+ */
+
+namespace Test;
+
+use Com\Tecnick\File\Exception as FileException;
+use Com\Tecnick\Pdf\Font\Exception as FontException;
+use Com\Tecnick\Pdf\Font\Import;
+use Com\Tecnick\Pdf\Font\Stack;
+
+/**
+ * Verifies that Stack::getCharWidth() resolves widths for non-ASCII Unicode
+ * codepoints via the cwu table populated during Core font import.
+ */
+class StackUnicodeWidthTest extends TestUtil
+{
+    private const HELVETICA_AFM = __DIR__ . '/../util/vendor/tecnickcom/tc-font-mirror/core/Helvetica.afm';
+
+    private function prepareTestEnvironment(): void
+    {
+        parent::setupTest();
+    }
+
+    private function fontPath(): string
+    {
+        return parent::getFontPath();
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    private function loadHelveticaStack(): Stack
+    {
+        $this->prepareTestEnvironment();
+        new Import((string) \realpath(self::HELVETICA_AFM), $this->fontPath());
+        $objnum = 1;
+        $stack = new Stack(0.75, true, true, false);
+        $stack->insert($objnum, 'helvetica', '', 10);
+        return $stack;
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackResolvesEmdashByUnicode(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        // em-dash U+2014 → AFM width 1000, at 10pt with stretching=1: 1000 * (10/1000) * 1 = 10.0
+        $this->bcAssertEqualsWithDelta(10.0, $stack->getCharWidth(0x2014), 0.001);
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackResolvesEndashByUnicode(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        // en-dash U+2013 → AFM width 556
+        $this->bcAssertEqualsWithDelta(5.56, $stack->getCharWidth(0x2013), 0.001);
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackResolvesBulletByUnicode(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        // bullet U+2022 → AFM width 350
+        $this->bcAssertEqualsWithDelta(3.5, $stack->getCharWidth(0x2022), 0.001);
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackResolvesEuroByUnicode(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        // Euro U+20AC → AFM width 556
+        $this->bcAssertEqualsWithDelta(5.56, $stack->getCharWidth(0x20AC), 0.001);
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackResolvesSpaceByCodepoint(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        // space U+0020 → AFM width 278 (sanity check, no regression)
+        $this->bcAssertEqualsWithDelta(2.78, $stack->getCharWidth(0x20), 0.001);
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackReturnZeroForShy(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        $this->assertSame(0.0, $stack->getCharWidth(0xAD));
+    }
+
+    /**
+     * @throws FileException
+     * @throws FontException
+     * @throws \RangeException
+     */
+    public function testStackReturnZeroForZwsp(): void
+    {
+        $stack = $this->loadHelveticaStack();
+        $this->assertSame(0.0, $stack->getCharWidth(0x200B));
+    }
+}