CairoContext
PHP Manual

CairoContext::copyPage

cairo_copy_page

(PECL cairo >= 0.1.0)

CairoContext::copyPage -- cairo_copy_page — Emits the current page

说明

Object oriented style (method):

public void CairoContext::copyPage ( void )

Procedural style:

void cairo_copy_page ( CairoContext $context )

Emits the current page for backends that support multiple pages, but doesn’t clear it, so, the contents of the current page will be retained for the next page too. Use CairoContext::showPage() if you want to get an empty page after the emission.

This is a convenience function that simply calls CairoSurface::copyPage() on CairoContext’s target.

参数

context

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

返回值

没有返回值。

范例

Example #1 Object oriented style

<?php

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

$context = new CairoContext($surface);

$context->copyPage();

?>

Example #2 Procedural style

<?php

$surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 50, 50);

$context = cairo_create($surface);

cairo_copy_page($context);

?>

参见

CairoContext
PHP Manual