108 lines
4.6 KiB
PHP
108 lines
4.6 KiB
PHP
--TEST--
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Bug #53504 imagettfbbox/imageftbbox gives incorrect values for bounding box
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--SKIPIF--
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<?php
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if(!extension_loaded('gd')){ die('skip gd extension not available'); }
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if(!function_exists('imageftbbox')) die('skip imageftbbox() not available');
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?>
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--FILE--
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<?php
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$cwd = __DIR__;
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$font = "$cwd/Tuffy.ttf";
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$g = imagecreate(800, 800);
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$bgnd = imagecolorallocate($g, 255, 255, 255);
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$black = imagecolorallocate($g, 0, 0, 0);
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$red = imagecolorallocate($g, 255, 0, 0);
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$blue = imagecolorallocate($g, 0, 0, 255);
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$tests = [
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// Kerning examples (unfortunately not available in "Tuffy" test font):
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['fontSize' => 50, 'angle' => 0, 'x' => 20, 'y' => 70, 'text' => 'AV Teg', 'exp' => [2,15, 208,15, 208,-48, 2,-48]],
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['fontSize' => 50, 'angle' => 90, 'x' => 70, 'y' => 350, 'text' => 'AV Teg', 'exp' => [15,-1, 15,-208, -48,-208, -48,-2]],
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['fontSize' => 50, 'angle' => 40, 'x' => 130, 'y' => 280, 'text' => 'AV Teg', 'exp' => [11,11, 169,-122, 129,-171, -30,-39]],
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// Shift-Test:
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['fontSize' => 100, 'angle' => 0, 'x' => 350, 'y' => 110, 'text' => 'H-Shift', 'exp' => [8,2, 386,2, 386,-97, 8,-97]],
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// Small/single chars:
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['fontSize' => 100, 'angle' => 0, 'x' => 350, 'y' => 220, 'text' => '-', 'exp' => [7,-37, 51,-37, 51,-46, 7,-46]],
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['fontSize' => 100, 'angle' => 0, 'x' => 430, 'y' => 220, 'text' => ',', 'exp' => [7,15, 21,15, 21,-13, 7,-13]],
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['fontSize' => 100, 'angle' => 0, 'x' => 510, 'y' => 220, 'text' => '.', 'exp' => [7,1, 21,1, 21,-13, 7,-13]],
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['fontSize' => 100, 'angle' => 0, 'x' => 590, 'y' => 220, 'text' => '|', 'exp' => [8,0, 17,0, 17,-95, 8,-95]],
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['fontSize' => 100, 'angle' => 0, 'x' => 670, 'y' => 220, 'text' => 'g', 'exp' => [5,29, 60,29, 60,-72, 5,-72]],
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// Multi-Line + rotation:
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['fontSize' => 30, 'angle' => 0, 'x' => 20, 'y' => 400, 'text' => "Multi\nLine\nTest", 'exp' => [2,107, 80,107, 80,-29, 2,-29]],
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['fontSize' => 30, 'angle' => 40, 'x' => 150, 'y' => 420, 'text' => "Multi\nLine\nTest", 'exp' => [70,81, 131,31, 43,-74, -18,-24]],
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['fontSize' => 30, 'angle' => 90, 'x' => 250, 'y' => 340, 'text' => "Multi\nLine\nTest", 'exp' => [107,-1, 107,-80, -29,-80, -29,-2]],
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// Some edge case glyphs:
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['fontSize' => 50, 'angle' => 90, 'x' => 70, 'y' => 750, 'text' => "iiiiiiiiiiii", 'exp' => [0,-4, 0,-165, -47,-165, -47,-4]],
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['fontSize' => 50, 'angle' => 90, 'x' => 150, 'y' => 750, 'text' => "~~~~~~~", 'exp' => [-19,-2, -18,-167, -29,-167, -29,-2]],
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['fontSize' => 50, 'angle' => 50, 'x' => 210, 'y' => 750, 'text' => "iiiiiiiiiiii", 'exp' => [3,-3, 107,-127, 70,-157, -34,-33]],
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['fontSize' => 50, 'angle' => 50, 'x' => 300, 'y' => 750, 'text' => "~~~~~~~", 'exp' => [-13,-13, 93,-141, 85,-147, -21,-20]],
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['fontSize' => 50, 'angle' => 0, 'x' => 430, 'y' => 650, 'text' => "iiiiiiiiiiii", 'exp' => [4,0, 165,0, 165,-47, 4,-47]],
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['fontSize' => 50, 'angle' => 0, 'x' => 430, 'y' => 750, 'text' => "~~~~~~~", 'exp' => [2,-19, 167,-19, 167,-29, 2,-29]],
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// "Big" test:
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['fontSize' => 200, 'angle' => 0, 'x' => 400, 'y' => 500, 'text' => "Big", 'exp' => [16,59, 329,59, 329,-190, 16,-190]],
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];
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foreach ($tests as $testnum => $test) {
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$bbox = imageftbbox($test['fontSize'], $test['angle'], $font, $test['text']);
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printf('%2d: ', $testnum);
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for ($i = 0; $i < 8; $i++) {
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$exp = $test['exp'][$i];
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if ($bbox[$i] >= $exp - 2 && $bbox[$i] <= $exp + 2) {
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echo '.';
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} else {
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echo "(expected $exp, got $bbox[$i])";
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}
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}
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echo "\n";
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$bboxDrawn = imagefttext($g, $test['fontSize'], $test['angle'],
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$test['x'], $test['y'], $black, $font, $test['text']);
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// check if both bboxes match when adding x/y offset:
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for ($i = 0; $i < count($bbox); $i += 2) {
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if ($bbox[$i] + $test['x'] !== $bboxDrawn[$i]) echo "imageftbbox and imagefttext differ!\n";
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if ($bbox[$i + 1] + $test['y'] !== $bboxDrawn[$i + 1]) echo "imageftbbox and imagefttext differ!\n";
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}
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// draw bounding box:
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imagepolygon($g, $bboxDrawn, $red);
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// draw baseline:
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$width = sqrt(pow($bboxDrawn[2] - $bboxDrawn[0], 2) + pow($bboxDrawn[3] - $bboxDrawn[1], 2));
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imageline($g, $test['x'], $test['y'],
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$test['x'] + $width * cos(deg2rad($test['angle'])),
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$test['y'] - $width * sin(deg2rad($test['angle'])), $blue);
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}
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imagepng($g, "$cwd/bug53504.png");
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?>
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--CLEAN--
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<?php @unlink(__DIR__ . '/bug53504.png'); ?>
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--EXPECT--
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0: ........
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1: ........
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2: ........
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3: ........
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4: ........
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5: ........
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6: ........
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7: ........
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8: ........
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9: ........
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10: ........
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11: ........
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12: ........
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13: ........
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14: ........
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15: ........
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16: ........
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17: ........
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18: ........
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