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Fix bug when centering non-latin characters (#1366)

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This commit is contained in:
Oliver Vogel
2024-06-13 14:36:55 +02:00
committed by GitHub
parent ed6ddf4aa7
commit 9fe7980bdc
3 changed files with 69 additions and 21 deletions
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14
src/Drivers/AbstractFontProcessor.php
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@@ -30,14 +30,16 @@ abstract class AbstractFontProcessor implements FontProcessorInterface
$x = $pivot->x();
$y = $font->hasFilename() ? $pivot->y() + $this->capHeight($font) : $pivot->y();
$x_adjustment = 0;
$xAdjustment = 0;
// adjust line positions according to alignment
foreach ($lines as $line) {
$line_width = $this->boxSize((string) $line, $font)->width();
$x_adjustment = $font->alignment() == 'left' ? 0 : $blockWidth - $line_width;
$x_adjustment = $font->alignment() == 'right' ? intval(round($x_adjustment)) : $x_adjustment;
$x_adjustment = $font->alignment() == 'center' ? intval(round($x_adjustment / 2)) : $x_adjustment;
$position = new Point($x + $x_adjustment, $y);
$lineBoxSize = $this->boxSize((string) $line, $font);
$lineWidth = $lineBoxSize->width() + $lineBoxSize->pivot()->x();
$xAdjustment = $font->alignment() == 'left' ? 0 : $blockWidth - $lineWidth;
$xAdjustment = $font->alignment() == 'right' ? intval(round($xAdjustment)) : $xAdjustment;
$xAdjustment = $font->alignment() == 'center' ? intval(round($xAdjustment / 2)) : $xAdjustment;
$position = new Point($x + $xAdjustment, $y);
$position->rotate($font->angle(), $pivot);
$line->setPosition($position);
$y += $leading;

14
src/Drivers/Gd/FontProcessor.php
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@@ -5,6 +5,7 @@ declare(strict_types=1);
namespace Intervention\Image\Drivers\Gd;
use Intervention\Image\Drivers\AbstractFontProcessor;
use Intervention\Image\Geometry\Point;
use Intervention\Image\Geometry\Rectangle;
use Intervention\Image\Interfaces\FontInterface;
use Intervention\Image\Interfaces\SizeInterface;
@@ -37,16 +38,17 @@ class FontProcessor extends AbstractFontProcessor
// calculate box size from ttf font file with angle 0
$box = imageftbbox(
$this->nativeFontSize($font),
0,
$font->filename(),
$text
size: $this->nativeFontSize($font),
angle: 0,
font_filename: $font->filename(),
string: $text
);
// build size from points
return new Rectangle(
intval(abs($box[4] - $box[0])),
intval(abs($box[5] - $box[1]))
width: intval(abs($box[6] - $box[4])), // difference of upper-left-x and upper-right-x
height: intval(abs($box[7] - $box[1])), // difference if upper-left-y and lower-left-y
pivot: new Point($box[6], $box[7]), // position of upper-left corner
);
}

62
tests/Unit/Drivers/AbstractFontProcessorTest.php
View File

@@ -19,19 +19,63 @@ class AbstractFontProcessorTest extends BaseTestCase
public function testTextBlock(): void
{
$text = 'AAAA BBBB CCCC';
$font = (new Font($this->getTestResourcePath('test.ttf')))->setWrapWidth(20)->setSize(50);
$font = (new Font($this->getTestResourcePath('test.ttf')))
->setWrapWidth(20)
->setSize(50)
->setLineHeight(1.25)
->setAlignment('center');
$processor = Mockery::mock(AbstractFontProcessor::class)->makePartial();
$processor->shouldReceive('boxSize')->with('T', $font)->andReturn(new Rectangle(12, 6));
$processor->shouldReceive('boxSize')->with('Hy', $font)->andReturn(new Rectangle(24, 6));
$processor->shouldReceive('boxSize')->with('AAAA', $font)->andReturn(new Rectangle(24, 6));
$processor->shouldReceive('boxSize')->with('AAAA BBBB', $font)->andReturn(new Rectangle(24, 6));
$processor->shouldReceive('boxSize')->with('BBBB', $font)->andReturn(new Rectangle(24, 6));
$processor->shouldReceive('boxSize')->with('BBBB CCCC', $font)->andReturn(new Rectangle(24, 6));
$processor->shouldReceive('boxSize')->with('CCCC', $font)->andReturn(new Rectangle(24, 6));
$processor->shouldReceive('boxSize')->with($text, $font)->andReturn(new Rectangle(100, 25));
$processor
->shouldReceive('boxSize')
->with('T', $font)
->andReturn(new Rectangle(12, 6));
$processor
->shouldReceive('boxSize')
->with('Hy', $font)
->andReturn(new Rectangle(24, 6));
$processor
->shouldReceive('boxSize')
->with('AAAA', $font)
->andReturn(new Rectangle(24, 6, new Point(1000, 0)));
$processor
->shouldReceive('boxSize')
->with('AAAA BBBB', $font)
->andReturn(new Rectangle(24, 6));
$processor
->shouldReceive('boxSize')
->with('BBBB', $font)
->andReturn(new Rectangle(24, 6, new Point(2000, 0)));
$processor
->shouldReceive('boxSize')
->with('BBBB CCCC', $font)
->andReturn(new Rectangle(24, 6));
$processor
->shouldReceive('boxSize')
->with('CCCC', $font)
->andReturn(new Rectangle(24, 6, new Point(3000, 0)));
$processor
->shouldReceive('boxSize')
->with($text, $font)
->andReturn(new Rectangle(100, 25, new Point(10, 0)));
$block = $processor->textBlock($text, $font, new Point(0, 0));
$this->assertInstanceOf(TextBlock::class, $block);
$this->assertEquals(3, $block->count());
$this->assertEquals(-512, $block->getAtPosition(0)->position()->x());
$this->assertEquals(-16, $block->getAtPosition(0)->position()->y());
$this->assertEquals(-1012, $block->getAtPosition(1)->position()->x());
$this->assertEquals(-8, $block->getAtPosition(1)->position()->y());
$this->assertEquals(-1512, $block->getAtPosition(2)->position()->x());
$this->assertEquals(0, $block->getAtPosition(2)->position()->y());
}
public function testNativeFontSize(): void