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 CairoContext::copyPath ( void ) : CairoPath

过程化风格:

cairo_copy_path ( CairoContext $context ) : CairoPath

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