CairoContext::copyPage()

(PECL cairo >= 0.1.0)

Emits the current page

说明

面向对象风格(method):

publicCairoContext::copyPage(void): void

过程化风格:

cairo_copy_page(CairoContext$context): void

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 面向对象风格

<?php
$surface = new CairoImageSurface(CairoFormat::ARGB32, 50, 50);
$context = new CairoContext($surface);
$context->copyPage();
?>

Example #2 过程化风格

<?php
$surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 50, 50);
$context = cairo_create($surface);
cairo_copy_page($context);
?>

参见

CairoContext::showPage() The showPage purpose
CairoSurface::copyPage() The copyPage purpose