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    ImagickDraw::annotation

    (PECL imagick 2, PECL imagick 3)

    ImagickDraw::annotation — Draws text on the image

    Descrizione

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

    Questa funzione, al momento non è documentata; è disponibile soltanto la lista degli argomenti.

    Draws text on the image.

    Elenco dei parametri

    x

    The x coordinate where text is drawn

    y

    The y coordinate where text is drawn

    text

    The text to draw on the image

    Valori restituiti

    Nessun valore viene restituito.

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    User Contributed Notes 4 notes

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    14
    use_contact_form at Jonas-Kress dot de
    15 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
    7
    Anonymous
    15 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
    15 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
    11 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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