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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL cairo >= 0.1.0)
CairoContext::fontExtents -- cairo_font_extents — Get the font extents
面向对象风格 (method):
过程化风格:
$context
)Gets the font extents for the currently selected font.
context
Description...
An array containing the font extents for the current font.
Example #1 面向对象风格
<?php
$sur = new CairoImageSurface ( CairoFormat :: ARGB32 , 50 , 50 );
$con = new CairoContext ( $sur );
var_dump ( $con -> fontExtents ());
?>
以上例程的输出类似于:
array(5) { ["ascent"]=> float(10) ["descent"]=> float(3) ["height"]=> float(13.3125) ["max_x_advance"]=> float(26.65625) ["max_y_advance"]=> float(0) }
Example #2 过程化风格
<?php
$sur = cairo_image_surface_create ( CAIRO_FORMAT_ARGB32 , 50 , 50 );
$con = cairo_create ( $sur );
var_dump ( cairo_font_extents ( $con ));
?>
以上例程的输出类似于:
array(5) { ["ascent"]=> float(10) ["descent"]=> float(3) ["height"]=> float(13.3125) ["max_x_advance"]=> float(26.65625) ["max_y_advance"]=> float(0) }