If ImagickDraw::setGravity ( int $gravity ) has been set, e,g; with $gravity= imagick::GRAVITY_CENTER.
Then, the x and y values offset the text from where the gravity setting would have placed it.
If the example included: $draw->setGravity (Imagick::GRAVITY_CENTER);
$image->annotateImage($draw, 10, 45, 0, 'The quick brown fox jumps over the lazy dog');
The text would be rendered to the right 10px and down 45px from the center.
Gravity constants are very useful as they can save having to calculate the placement of variable text strings and font sizes.
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Imagick::annotateImage
Почист и полокален преглед на PHP референцата, со задржана структура од PHP.net и подобра читливост за примери, секции и белешки.
Патека
imagick.annotateimage.php
Локална патека за оваа страница.
Извор
php.net/manual/en
Оригиналниот HTML се реупотребува и локално се стилизира.
Режим
Прокси + превод во позадина
Кодовите, табелите и белешките остануваат читливи во истиот тек.
Референца
imagick.annotateimage.php
Imagick::annotateImage
Референца за `imagick.annotateimage.php` со подобрена типографија и навигација.
Imagick::annotateImage
(PECL imagick 2, PECL imagick 3)
Imagick::annotateImage — Анотира слика со текст
= NULL
public Imagick::annotateImage(
ImagickDraw
float
float
float
string
): bool
ImagickDraw
$draw_settings,float
$x,float
$y,float
$angle,string
$text): bool
Анотира слика со текст.
Параметри
draw_settings-
The ImagickDraw object that contains settings for drawing the text
x-
Horizontal offset in pixels to the left of text
y-
Vertical offset in pixels to the baseline of text
angle-
The angle at which to write the text
text-
The string to draw
Вратени вредности
Патеката до PHP скриптата што треба да се провери. true на успешен исход.
Примери
Пример #1 Користење Imagick::annotateImage():
Annotate text on an empty image
<?php
/* Create some objects */
$image = new Imagick();
$draw = new ImagickDraw();
$pixel = new ImagickPixel( 'gray' );
/* New image */
$image->newImage(800, 75, $pixel);
/* Black text */
$draw->setFillColor('black');
/* Font properties */
$draw->setFont('Bookman-DemiItalic');
$draw->setFontSize( 30 );
/* Create text */
$image->annotateImage($draw, 10, 45, 0, 'The quick brown fox jumps over the lazy dog');
/* Give image a format */
$image->setImageFormat('png');
/* Output the image with headers */
header('Content-type: image/png');
echo $image;
?>Види Исто така
- ImagickDraw::annotation() - Конструктор на Gmagick
- Imagick::setFont() - Целта на поставување непроѕирност на пополнување
Белешки од корисници 4 белешки
alan at ridersite dot org ¶
пред 18 години
www dot query at gmail dot com ¶
пред 14 години
$image->annotateImage($draw, 10, 45, 0, 'The quick brown fox');
If the third parameter, the 'Y' value, is 0, the text will be invisible because the text is printed ABOVE the image - not on the image.
The solution is to start, depending on your chosen font size, with a Y value of about 40 and experiment.
[Also:]
When wishing to print some text on a photograph and make that text sufficiently contrasting to the background image, use a 4 byte code for colour and transparency.
It is the same 4 byte code using by the parameter '-undercolor' in ImageMagick's command lime instruction 'convert'.
The first 3 bytes are the RGB colour code and the fourth byte is the transparency byte.
<?php
$picin = new Imagick($pic1);
$picin->scaleimage(800,0);
$height = $picin->getimageheight();
$draw = new ImagickDraw();
$draw->setFillColor('#ffff00');
$draw->setFont('Eurostile');
$draw->setFontSize(21);
$draw->setTextUnderColor('#ff000088');
$picin->annotateImage($draw,40,$height-10,0,"Hallo");
$picin->writeimage($pic6);
?>
The example code produces yellow text on a semi-transparent red background.
$pic1 and $pic6 were previously defined as directory/file strings.