PHP 5.6.0beta1 released

CairoContext::clipPreserve

cairo_clip_preserve

(PECL cairo >= 0.1.0)

CairoContext::clipPreserve -- cairo_clip_preserveEstablishes a new clip region from the current clip

Beschreibung

Objektorientierter Stil (method):

public void CairoContext::clipPreserve ( void )

Prozeduraler Stil:

void cairo_clip_preserve ( CairoContext $context )

Establishes a new clip region by intersecting the current clip region with the current path as it would be filled by Context.fill() and according to the current FILL RULE (see CairoContext::setFillRule() or cairo_set_fill_rule()).

Unlike CairoContext::clip(), CairoContext::clipPreserve() preserves the path within the Context. The current clip region affects all drawing operations by effectively masking out any changes to the surface that are outside the current clip region.

Calling CairoContext::clipPreserve() can only make the clip region smaller, never larger. But the current clip is part of the graphics state, so a temporary restriction of the clip region can be achieved by calling CairoContext::clipPreserve() within a CairoContext::save()/CairoContext::restore() pair. The only other means of increasing the size of the clip region is CairoContext::resetClip().

Parameter-Liste

context

A valid CairoContext object

R├╝ckgabewerte

Es wird kein Wert zur├╝ckgegeben.

Beispiele

Beispiel #1 Objektorientierter Stil

<?php

$surface 
= new CairoImageSurface(CairoFormat::ARGB325050);

$context = new CairoContext($surface);

$context->clipPreserve();

?>

Beispiel #2 Prozeduraler Stil

<?php

$surface 
cairo_image_surface_create(CAIRO_FORMAT_ARGB325050);

$context cairo_create($surface);

cairo_clip_preserve($context);

?>

Siehe auch

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