©
Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL cairo >= 0.1.0)
CairoContext::clipExtents -- cairo_clip_extents — Computes the area inside the current clip
面向对象风格 (method):
过程化风格:
$context
)Computes a bounding box in user coordinates covering the area inside the current clip.
context
A valid CairoContext object
An array containing the (float)x1, (float)y1, (float)x2, (float)y2, coordinates covering the area inside the current clip
Example #1 面向对象风格
<?php
$surface = new CairoImageSurface ( CairoFormat :: ARGB32 , 50 , 50 );
$context = new CairoContext ( $surface );
var_dump ( $context -> clipExtents ());
?>
以上例程的输出类似于:
array(4) { [0]=> float(0) [1]=> float(0) [2]=> float(50) [3]=> float(50) }
Example #2 过程化风格
<?php
$surface = cairo_image_surface_create ( CAIRO_FORMAT_ARGB32 , 50 , 50 );
$context = cairo_create ( $surface );
var_dump ( cairo_clip_extents ( $context ));
?>
以上例程的输出类似于:
array(4) { [0]=> float(0) [1]=> float(0) [2]=> float(50) [3]=> float(50) }