xref: /PHP-8.0/ext/gd/tests/bug53504.phpt (revision c5401854)
1--TEST--
2Bug #53504 imagettfbbox/imageftbbox gives incorrect values for bounding box
3--SKIPIF--
4<?php
5    if(!extension_loaded('gd')){ die('skip gd extension not available'); }
6    if(!function_exists('imageftbbox')) die('skip imageftbbox() not available');
7?>
8--FILE--
9<?php
10$cwd = __DIR__;
11$font = "$cwd/Tuffy.ttf";
12
13$g = imagecreate(800, 800);
14$bgnd  = imagecolorallocate($g, 255, 255, 255);
15$black = imagecolorallocate($g, 0, 0, 0);
16$red = imagecolorallocate($g, 255, 0, 0);
17$blue = imagecolorallocate($g, 0, 0, 255);
18
19$tests = [
20    // Kerning examples (unfortunately not available in "Tuffy" test font):
21    ['fontSize' => 50, 'angle' => 0, 'x' => 20, 'y' => 70, 'text' => 'AV Teg', 'exp' => [2,15, 208,15, 208,-48, 2,-48]],
22    ['fontSize' => 50, 'angle' => 90, 'x' => 70, 'y' => 350, 'text' => 'AV Teg', 'exp' => [15,-1, 15,-208, -48,-208, -48,-2]],
23    ['fontSize' => 50, 'angle' => 40, 'x' => 130, 'y' => 280, 'text' => 'AV Teg', 'exp' => [11,11, 169,-122, 129,-171, -30,-39]],
24
25    // Shift-Test:
26    ['fontSize' => 100, 'angle' => 0, 'x' => 350, 'y' => 110, 'text' => 'H-Shift', 'exp' => [8,2, 386,2, 386,-97, 8,-97]],
27
28    // Small/single chars:
29    ['fontSize' => 100, 'angle' => 0, 'x' => 350, 'y' => 220, 'text' => '-', 'exp' => [7,-37, 51,-37, 51,-46, 7,-46]],
30    ['fontSize' => 100, 'angle' => 0, 'x' => 430, 'y' => 220, 'text' => ',', 'exp' => [7,15, 21,15, 21,-13, 7,-13]],
31    ['fontSize' => 100, 'angle' => 0, 'x' => 510, 'y' => 220, 'text' => '.', 'exp' => [7,1, 21,1, 21,-13, 7,-13]],
32    ['fontSize' => 100, 'angle' => 0, 'x' => 590, 'y' => 220, 'text' => '|', 'exp' => [8,0, 17,0, 17,-95, 8,-95]],
33    ['fontSize' => 100, 'angle' => 0, 'x' => 670, 'y' => 220, 'text' => 'g', 'exp' => [5,29, 60,29, 60,-72, 5,-72]],
34
35    // Multi-Line + rotation:
36    ['fontSize' => 30, 'angle' => 0, 'x' => 20, 'y' => 400, 'text' => "Multi\nLine\nTest", 'exp' => [2,107, 80,107, 80,-29, 2,-29]],
37    ['fontSize' => 30, 'angle' => 40, 'x' => 150, 'y' => 420, 'text' => "Multi\nLine\nTest", 'exp' => [70,81, 131,31, 43,-74, -18,-24]],
38    ['fontSize' => 30, 'angle' => 90, 'x' => 250, 'y' => 340, 'text' => "Multi\nLine\nTest", 'exp' => [107,-1, 107,-80, -29,-80, -29,-2]],
39
40    // Some edge case glyphs:
41    ['fontSize' => 50, 'angle' => 90, 'x' => 70, 'y' => 750, 'text' => "iiiiiiiiiiii", 'exp' => [0,-4, 0,-165, -47,-165, -47,-4]],
42    ['fontSize' => 50, 'angle' => 90, 'x' => 150, 'y' => 750, 'text' => "~~~~~~~", 'exp' => [-19,-2, -18,-167, -29,-167, -29,-2]],
43    ['fontSize' => 50, 'angle' => 50, 'x' => 210, 'y' => 750, 'text' => "iiiiiiiiiiii", 'exp' => [3,-3, 107,-127, 70,-157, -34,-33]],
44    ['fontSize' => 50, 'angle' => 50, 'x' => 300, 'y' => 750, 'text' => "~~~~~~~", 'exp' => [-13,-13, 93,-141, 85,-147, -21,-20]],
45    ['fontSize' => 50, 'angle' => 0, 'x' => 430, 'y' => 650, 'text' => "iiiiiiiiiiii", 'exp' => [4,0, 165,0, 165,-47, 4,-47]],
46    ['fontSize' => 50, 'angle' => 0, 'x' => 430, 'y' => 750, 'text' => "~~~~~~~", 'exp' => [2,-19, 167,-19, 167,-29, 2,-29]],
47
48    // "Big" test:
49    ['fontSize' => 200, 'angle' => 0, 'x' => 400, 'y' => 500, 'text' => "Big", 'exp' => [16,59, 329,59, 329,-190, 16,-190]],
50];
51
52foreach ($tests as $testnum => $test) {
53    $bbox = imageftbbox($test['fontSize'], $test['angle'], $font, $test['text']);
54    printf('%2d: ', $testnum);
55    for ($i = 0; $i < 8; $i++) {
56        $exp = $test['exp'][$i];
57        if ($bbox[$i] >= $exp - 2 && $bbox[$i] <= $exp + 2) {
58            echo '.';
59        } else {
60            echo "(expected $exp, got $bbox[$i])";
61        }
62    }
63    echo "\n";
64
65    $bboxDrawn = imagefttext($g, $test['fontSize'], $test['angle'],
66        $test['x'], $test['y'], $black, $font, $test['text']);
67
68    // check if both bboxes match when adding x/y offset:
69    for ($i = 0; $i < count($bbox); $i += 2) {
70        if ($bbox[$i] + $test['x'] !== $bboxDrawn[$i]) echo "imageftbbox and imagefttext differ!\n";
71        if ($bbox[$i + 1] + $test['y'] !== $bboxDrawn[$i + 1]) echo "imageftbbox and imagefttext differ!\n";
72    }
73
74    // draw bounding box:
75    imagepolygon($g, $bboxDrawn, $red);
76
77    // draw baseline:
78    $width = sqrt(pow($bboxDrawn[2] - $bboxDrawn[0], 2) + pow($bboxDrawn[3] - $bboxDrawn[1], 2));
79    imageline($g, $test['x'], $test['y'],
80        $test['x'] + $width * cos(deg2rad($test['angle'])),
81        $test['y'] - $width * sin(deg2rad($test['angle'])), $blue);
82}
83
84imagepng($g, "$cwd/bug53504.png");
85?>
86--CLEAN--
87<?php @unlink(__DIR__ . '/bug53504.png'); ?>
88--EXPECT--
89 0: ........
90 1: ........
91 2: ........
92 3: ........
93 4: ........
94 5: ........
95 6: ........
96 7: ........
97 8: ........
98 9: ........
9910: ........
10011: ........
10112: ........
10213: ........
10314: ........
10415: ........
10516: ........
10617: ........
10718: ........
108