PHP Manual
CairoContext
Retrieves the current clip as a list of rectangles

CairoContext::clipRectangleList

cairo_clip_rectangle_list

(PECL cairo >= 0.1.0)

CairoContext::clipRectangleList -- cairo_clip_rectangle_list — Retrieves the current clip as a list of rectangles

说明

面向对象风格 (method):

public CairoContext::clipRectangleList ( void ) : array

过程化风格:

cairo_clip_rectangle_list ( CairoContext $context ) : array

Returns a list-type array with the current clip region as a list of rectangles in user coordinates

参数

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

返回值

An array of user-space represented rectangles for the current clip

(The status in the list may be CAIRO_STATUS_CLIP_NOT_REPRESENTABLE to indicate that the clip region cannot be represented as a list of user-space rectangles. The status may have other values to indicate other errors.)

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->clipRectangleList());

?>

以上例程的输出类似于：

array(1) {
  [0]=>
  array(4) {
    ["x"]=>
    float(0)
    ["y"]=>
    float(0)
    ["width"]=>
    float(50)
    ["height"]=>
    float(50)
  }
}

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_clip_rectangle_list($context));

?>

以上例程的输出类似于：

array(1) {
  [0]=>
  array(4) {
    ["x"]=>
    float(0)
    ["y"]=>
    float(0)
    ["width"]=>
    float(50)
    ["height"]=>
    float(50)
  }
}

参见

Classname::Method()