CairoContext::copyPath

cairo_copy_path

(PECL cairo >= 0.1.0)

CairoContext::copyPath -- cairo_copy_path — Creates a copy of the current path

说明

面向对象风格 (method):

public CairoPath CairoContext::copyPath ( void )

过程化风格:

CairoPath cairo_copy_path ( CairoContext $context )

Creates a copy of the current path and returns it to the user as a CairoPath. See CairoPath for hints on how to iterate over the returned data structure.

This function will always return a valid CairoPath object, but the result will have no data, if either of the following conditions hold:

1. If there is insufficient memory to copy the path. In this case CairoPath->status will be set to CAIRO_STATUS_NO_MEMORY.
2. If context is already in an error state. In this case CairoPath->status will contain the same status that would be returned by cairo_status() .

In either case, CairoPath->status will be set to CAIRO_STATUS_NO_MEMORY (regardless of what the error status in cr might have been).

参数

context: A valid CairoContext object created with CairoContext::__construct() or cairo_create()

返回值

A copy of the current CairoPath in the context

范例

Example #1 面向对象风格

  <?php

$surface  = new  CairoImageSurface ( CairoFormat :: ARGB32 ,  50 ,  50 );

 $context  = new  CairoContext ( $surface );

 var_dump ( $context -> copyPath ())

 ?>

以上例程的输出类似于：

object(CairoPath)#3 (0) {
}

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_copy_path ( $context ));

 ?>

以上例程的输出类似于：

object(CairoPath)#3 (0) {
}

参见

CairoContext::closePath() - Closes the current path