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<?php
/**
* File containing the abstract ezcGraphChartElement class
*
* @package Graph
* @version //autogentag//
* @copyright Copyright (C) 2005, 2006 eZ systems as. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
*/
/**
*
*
* @package Graph
*/
abstract class ezcGraphChartElement extends ezcBaseOptions
{
/**
* Title of chart element
*
* @var string
*/
protected $title;
/**
* Background color of chart element
*
* @var ezcGraphColor
*/
protected $background;
/**
* Boundings of this elements
*
* @var ezcGraphBoundings
*/
protected $boundings;
/**
* Border color of chart element
*
* @var ezcGraphColor
*/
protected $border;
/**
* Distance between border and content of element
*
* @var integer
*/
protected $padding;
/**
* Distance between outer boundings and border of an element
*
* @var integer
*/
protected $margin;
/**
* Border width
*
* @var integer
*/
protected $borderWidth;
/**
* Integer defining the elements position in the chart
*
* @var integer
*/
protected $position;
/**
* Maximum size of the title
*
* @var integer
*/
protected $maxTitleHeight = 16;
/**
* Percentage of boundings which are used for the title with position
* left, right or center
*
* @var float
*/
protected $portraitTitleSize = .15;
/**
* Percentage of boundings which are used for the title with position
* top otr bottom
*
* @var float
*/
protected $landscapeTitleSize = .2;
/**
* Font used for this element
*
* @var ezcGraphFontOptions
*/
protected $font;
/**
* Indicates if font configuration was already cloned for this specific
* element.
*
* @var boolean
*/
protected $fontCloned = false;
public function __construct( array $options = array() )
{
$this->boundings = new ezcGraphBoundings();
$this->position = ezcGraph::LEFT;
$this->font = new ezcGraphFontOptions();
parent::__construct( $options );
}
/**
* Set colors and border fro this element
*
* @param ezcGraphPalette $palette Palette
* @return void
*/
public function setFromPalette( ezcGraphPalette $palette )
{
$this->border = $palette->elementBorderColor;
$this->borderWidth = $palette->elementBorderWidth;
$this->background = $palette->elementBackground;
$this->padding = $palette->padding;
$this->margin = $palette->margin;
}
/**
* __set
*
* @param mixed $propertyName
* @param mixed $propertyValue
* @throws ezcBaseValueException
* If a submitted parameter was out of range or type.
* @throws ezcBasePropertyNotFoundException
* If a the value for the property options is not an instance of
* @return void
*/
public function __set( $propertyName, $propertyValue )
{
switch ( $propertyName )
{
case 'title':
$this->title = (string) $propertyValue;
break;
case 'background':
$this->background = ezcGraphColor::create( $propertyValue );
break;
case 'border':
$this->border = ezcGraphColor::create( $propertyValue );
break;
case 'padding':
$this->padding = max( 0, (int) $propertyValue );
break;
case 'margin':
$this->margin = max( 0, (int) $propertyValue );
break;
case 'borderWidth':
$this->borderWidth = max( 0, (int) $propertyValue);
break;
case 'font':
if ( $propertyValue instanceof ezcGraphFontOptions )
{
$this->font = $propertyValue;
}
elseif ( is_string( $propertyValue ) )
{
if ( !$this->fontCloned )
{
$this->font = clone $this->font;
$this->fontCloned = true;
}
$this->font->font = $propertyValue;
}
else
{
throw new ezcBaseValueException( $propertyValue, 'ezcGraphFontOptions' );
}
break;
case 'position':
$positions = array(
ezcGraph::TOP,
ezcGraph::BOTTOM,
ezcGraph::LEFT,
ezcGraph::RIGHT,
);
if ( in_array( $propertyValue, $positions, true ) )
{
$this->position = $propertyValue;
}
else
{
throw new ezcBaseValueException( 'position', $propertyValue, 'integer' );
}
break;
default:
throw new ezcGraphNoSuchDatasetException( $propertyName );
break;
}
}
public function __get( $propertyName )
{
if ( $propertyName === 'font' )
{
// Clone font configuration when requested for this element
if ( !$this->fontCloned )
{
$this->font = clone $this->font;
$this->fontCloned = true;
}
}
return parent::__get( $propertyName );
}
/**
* Renders this chart element
*
* This method receives and returns a part of the canvas where it can be
* rendered on.
*
* @param ezcGraphBoundings $boundings Part of canvase to render element on
* @return ezcGraphBoundings Part of canvas, which is still free to draw on
*/
abstract public function render( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings );
protected function renderBorder( ezcGraphRenderer $renderer )
{
// Apply margin
$this->boundings->x0 += $this->margin;
$this->boundings->y0 += $this->margin;
$this->boundings->x1 -= $this->margin;
$this->boundings->y1 -= $this->margin;
if ( ( $this->border instanceof ezcGraphColor ) &&
( $this->borderWidth > 0 ) )
{
// Default bordervalue to 1
$this->borderWidth = max( 1, $this->borderWidth );
// Draw border
$renderer->drawRect(
$this->border,
new ezcGraphCoordinate( $this->boundings->x0, $this->boundings->y0 ),
$this->boundings->x1 - $this->boundings->x0,
$this->boundings->y1 - $this->boundings->y0,
$this->borderWidth
);
// Reduce local boundings by borderWidth
$this->boundings->x0 += $this->borderWidth;
$this->boundings->y0 += $this->borderWidth;
$this->boundings->x1 -= $this->borderWidth;
$this->boundings->y1 -= $this->borderWidth;
}
}
protected function renderBackground( ezcGraphRenderer $renderer )
{
if ( $this->background instanceof ezcGraphColor )
{
$renderer->drawBackground(
$this->background,
new ezcGraphCoordinate( $this->boundings->x0, $this->boundings->y0 ),
$this->boundings->x1 - $this->boundings->x0,
$this->boundings->y1 - $this->boundings->y0
);
}
// Apply padding
$this->boundings->x0 += $this->padding;
$this->boundings->y0 += $this->padding;
$this->boundings->x1 -= $this->padding;
$this->boundings->y1 -= $this->padding;
}
protected function renderTitle( ezcGraphRenderer $renderer )
{
if ( !empty( $this->title ) )
{
switch ( $this->position )
{
case ezcGraph::LEFT:
case ezcGraph::RIGHT:
case ezcGraph::CENTER:
$height = min(
$this->maxTitleHeight,
( $this->boundings->y1 - $this->boundings->y0 ) * $this->portraitTitleSize
);
$renderer->drawTextBox(
new ezcGraphCoordinate( $this->boundings->x0, $this->boundings->y0 ),
$this->title,
$this->boundings->x1 - $this->boundings->x0,
$height
);
$this->boundings->y0 += $height;
break;
case ezcGraph::TOP:
$height = min(
$this->maxTitleHeight,
( $this->boundings->y1 - $this->boundings->y0 ) * $this->landscapeTitleSize
);
$renderer->drawTextBox(
new ezcGraphCoordinate( $this->boundings->x0, $this->boundings->y0 ),
$this->title,
$this->boundings->x1 - $this->boundings->x0,
$height
);
$this->boundings->y0 += $height;
break;
case ezcGraph::BOTTOM:
$height = min(
$this->maxTitleHeight,
( $this->boundings->y1 - $this->boundings->y0 ) * $this->landscapeTitleSize
);
$renderer->drawTextBox(
new ezcGraphCoordinate( $this->boundings->x0, $this->boundings->y1 - $height ),
$this->title,
$this->boundings->x1 - $this->boundings->x0,
$height
);
$this->boundings->y1 -= $height;
break;
}
}
}
}
?>
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