cairo_font_extents(3) [php man page]

CAIRO_FONT_EXTENTS(3)							 1						     CAIRO_FONT_EXTENTS(3)

CairoContext::fontExtents - Get the font extents

       Object oriented style (method):

SYNOPSIS

       public array CairoContext::fontExtents (void  )

DESCRIPTION

       Procedural style:
       array cairo_font_extents (CairoContext  $context)

	Gets the font extents for the currently selected font.

PARAMETERS

	      o $context
		- Description...

RETURN VALUES

	An array containing the font extents for the current font.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php

	      $sur = new CairoImageSurface(CairoFormat::ARGB32, 50, 50);
	      $con = new CairoContext($sur);

	      var_dump($con->fontExtents());

	      ?>

	      The above example will output something similar to:

	      array(5) {
		["ascent"]=>
		float(10)
		["descent"]=>
		float(3)
		["height"]=>
		float(13.3125)
		["max_x_advance"]=>
		float(26.65625)
		["max_y_advance"]=>
		float(0)
	      }

       Example #2

	      Procedural style

	      <?php

	      $sur = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 50, 50);
	      $con = cairo_create($sur);

	      var_dump(cairo_font_extents($con));

	      ?>

	      The above example will output something similar to:

	      array(5) {
		["ascent"]=>
		float(10)
		["descent"]=>
		float(3)
		["height"]=>
		float(13.3125)
		["max_x_advance"]=>
		float(26.65625)
		["max_y_advance"]=>
		float(0)
	      }

SEE ALSO

       Classname::Method.

PHP Documentation Group 												     CAIRO_FONT_EXTENTS(3)

CAIRO_CURVE_TO(3)							 1							 CAIRO_CURVE_TO(3)

CairoContext::curveTo - Adds a curve

       Object oriented style (method):

SYNOPSIS

       public void CairoContext::curveTo (float  $x1, float  $y1, float  $x2, float  $y2, float  $x3, float  $y3)

DESCRIPTION

       Procedural style:
       void cairo_curve_to (CairoContext  $context, float  $x1, float  $y1, float  $x2, float  $y2, float  $x3, float  $y3)

	Adds  a cubic Bezier spline to the path from the current point to position $x3 ,$y3 in user-space coordinates, using $x1, $y1 and $x2, $y2
       as the control points. After this call the current point will be $x3, $y3.

	If there is no current point before the call to CairoContext::curveTo this function will behave as if preceded	by  a  call  to  CairoCon-
       text::moveTo ($x1, $y1).

PARAMETERS

	      o $context
		- A valid CairoContext object created with CairoContext::__construct or cairo_create(3)

	      o $x1
		- First control point in the x axis for the curve

	      o $y1
		- First control point in the y axis for the curve

	      o $x2
		- Second control point in x axis for the curve

	      o $y2
		- Second control point in y axis for the curve

	      o $x3
		- Final point in the x axis for the curve

	      o $y3
		- Final point in the y axis for the curve

RETURN VALUES

	No value is returned.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php
	      $s = new CairoImageSurface(CairoFormat::ARGB32, 100, 100);
	      $c = new CairoContext($s);

	      $c->setSourceRgb(0, 0, 0);

	      $c->paint();

	      $c->moveTo(10, 50);
	      $c->setLineWidth(5);
	      $c->setSourceRgb(.1, 0, 1);
	      $c->curveTo(20, 80, 80, 20, 90, 50);
	      $c->stroke();

	      $s->writeToPng(dirname(__FILE__) . '/curveTo.png');
	      ?>

       Example #2

	      Procedural style

	      <?php

	      $s = cairo_image_surface_create(CAIRO_SURFACE_TYPE_IMAGE, 100, 100);
	      $c = cairo_create($s);

	      cairo_set_source_rgb($c, 0, 0, 0);

	      cairo_paint($c);

	      cairo_move_to($c, 10, 50);
	      cairo_set_line_width($c, 5);
	      cairo_set_source_rgb($c, .1, 0, 1);
	      cairo_curve_to($c, 20, 80, 80, 20, 90, 50);
	      cairo_stroke($c);

	      cairo_surface_write_to_png($s, dirname(__FILE__) . '/curve_to.png');
	      ?>

SEE ALSO

       CairoContext::moveTo.

PHP Documentation Group 													 CAIRO_CURVE_TO(3)