PHP 5.5.15 is released

CairoContext::clip

cairo_clip

(PECL cairo >= 0.1.0)

CairoContext::clip -- cairo_clipEstablishes a new clip region

Beschreibung

Objektorientierter Stil (method):

public void CairoContext::clip ( void )

Prozeduraler Stil:

void cairo_clip ( CairoContext $context )

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

After CairoContext::clip() or cairo_clip(), the current path will be cleared from the cairo 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::clip() or cairo_clip() 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::clip() or cairo_clip() within a CairoContext::save()/CairoContext::restore() or cairo_save()/cairo_restore() pair. The only other means of increasing the size of the clip region is CairoContext::resetClip() or procedural cairo_reset_clip().

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->clip();

?>

Beispiel #2 Prozeduraler Stil

<?php

$surface 
cairo_image_surface_create(CAIRO_FORMAT_ARGB325050);

$context cairo_create($surface);

cairo_clip($context);

?>

Siehe auch

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