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ImagickDraw::annotation

(PECL imagick 2, PECL imagick 3)

ImagickDraw::annotationDraws text on the image

Beschreibung

public ImagickDraw::annotation(float $x, float $y, string $text): bool
Warnung

Diese Funktion ist bis jetzt nicht dokumentiert. Es steht nur die Liste der Parameter zur Verfügung.

Draws text on the image.

Parameter-Liste

x

The x coordinate where text is drawn

y

The y coordinate where text is drawn

text

The text to draw on the image

Rückgabewerte

Es wird kein Wert zurückgegeben.

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User Contributed Notes 4 notes

up
15
use_contact_form at Jonas-Kress dot de
14 years ago
may help someone...

<?php
/**
* Split the given text into rows fitting the given maxWidth
*
* @param unknown_type $draw
* @param unknown_type $text
* @param unknown_type $maxWidth
* @return array
*/
private function getTextRows($draw, $text, $maxWidth)
{
$words = explode(" ", $text);

$lines = array();
$i=0;
while (
$i < count($words))
{
//as long as there are words

$line = "";
do
{
//append words to line until the fit in size
if($line != ""){
$line .= " ";
}
$line .= $words[$i];


$i++;
if((
$i) == count($words)){
break;
//last word -> break
}

//messure size of line + next word
$linePreview = $line." ".$words[$i];
$metrics = $this->canvas->queryFontMetrics($draw, $linePreview);
//echo $line."($i)".$metrics["textWidth"].":".$maxWidth."<br>";

}while($metrics["textWidth"] <= $maxWidth);

//echo "<hr>".$line."<br>";
$lines[] = $line;
}

//var_export($lines);
return $lines;
}
?>
up
8
Anonymous
14 years ago
Here's how to create a header image and write it to file. This took me a while to figure out. I hope this helps.

<?php

/* Text to write */
$text = "Hello World!";

/* Create Imagick objects */
$image = new Imagick();
$draw = new ImagickDraw();
$color = new ImagickPixel('#000000');
$background = new ImagickPixel('none'); // Transparent

/* Font properties */
$draw->setFont('Arial');
$draw->setFontSize(50);
$draw->setFillColor($color);
$draw->setStrokeAntialias(true);
$draw->setTextAntialias(true);

/* Get font metrics */
$metrics = $image->queryFontMetrics($draw, $text);

/* Create text */
$draw->annotation(0, $metrics['ascender'], $text);

/* Create image */
$image->newImage($metrics['textWidth'], $metrics['textHeight'], $background);
$image->setImageFormat('png');
$image->drawImage($draw);

/* Save image */
file_put_contents('/path/to/file.png', $image);
?>
up
-1
Anonymous
14 years ago
You can use this method to break your text so that it'll fit a certain $maxWidth.

<?php
/**
* @param string $text
* @param int $maxWidth
*/
protected function _fitText($text, $maxWidth)
{
$im = new Imagick();
$im->newImage($this->_width, $this->_height, "none");

$lines = explode(PHP_EOL, trim($text));
$DEBUG_LOOP = 0;

for (
$k = 0; $k < count($lines); ++$k) {
do {
$drawText = new ImagickDraw();
// set your font settings like size, family, .. here
$metrics = $im->queryFontMetrics($drawText, $lines[$k]);
$fits = $metrics["textWidth"] <= $maxWidth;

if (
$fits) {
break;
}

$pos = mb_strrpos($lines[$k], " ");
if (
$pos === false) {
throw new
RuntimeException("can not make it fit");
}
if (!isset(
$lines[$k + 1])) {
$lines[$k + 1] = null;
}
$lines[$k + 1] = trim(mb_substr($lines[$k], $pos + 1) . " " . $lines[$k + 1]);
$lines[$k] = trim(mb_substr($lines[$k], 0, $pos));

if (++
$DEBUG_LOOP >= 200) {
throw new
RuntimeException("infinite loop");
}
} while (!
$fits);
}
$text = implode(PHP_EOL, $lines);
$drawText = new ImagickDraw();
// set your font settings like size, family, .. here again!
$metrics = $im->queryFontMetrics($drawText, $text);
$metrics["text"] = $text;
assert('$metrics["textWidth"] <= $maxWidth');
return
$metrics;
}
?>
up
-1
web at synaptech dot fr
10 years ago
In some cases the (custom) font can be truncated on the side parts, especially the handwritten ones.
To improve the above note from Anonymous on "how to create a header image", I've changed this part of the code:

<?php
/* Create text */
$draw->annotation( $metrics['boundingBox']['y2'], $metrics['ascender'], $text );

/* Create image */
$image->newImage( $metrics['textWidth'] + $metrics['boundingBox']['y2'], $metrics['textHeight'], $background );
?>
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