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<?php |
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/** |
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* This file holds the base Graph class for doing |
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* SVG graphs |
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* |
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* $Id: SVGGraph.inc,v 1.5 2003/03/04 22:15:18 hemna Exp $ |
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* |
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* @author Walter A. Boring IV <waboring@buildabetterweb.com> |
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* @package phpHtmlLib |
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* @subpackage SVG |
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*/ |
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|
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/** |
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* This is the base Graph class for doing |
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* SVG graphs |
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* |
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* $Id: SVGGraph.inc,v 1.5 2003/03/04 22:15:18 hemna Exp $ |
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* |
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* @author Walter A. Boring IV <waboring@buildabetterweb.com> |
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* @package phpHtmlLib |
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* @subpackage SVG |
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*/ |
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class SVGGraph extends BaseWidget { |
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|
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|
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/** |
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* This array holds various |
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* config options for this graph |
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*/ |
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var $_options = array("title" => "", |
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"title_style" => "font-size:20px;font-weight:bold;font-family: geneva, trebuchet ms", |
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"width" => 100, |
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"height" => 100, |
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"left_margin" => 5, |
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"right_margin" => 0, |
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"top_margin" => 20, |
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"bottom_margin" => 0, |
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"title_font_width" => 10, |
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"title_font_height" => 20, |
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"axis_font_width" => 5, |
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"axis_font_height" => 8, |
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"axis_label_font_width" => 12, |
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"axis_label_font_height" => 12); |
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|
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|
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/** |
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* Various calculated image properties |
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* |
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*/ |
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var $_draw = array(); |
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|
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|
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function SVGGraph($title, $width, $height) { |
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$this->set_title($title); |
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$this->set_width($width); |
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$this->set_height($height); |
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} |
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|
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|
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function render($indent_level=0, $output_debug=0) { |
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//do any data parsing/munging/calculating |
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$this->_prepare_data(); |
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|
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$container = container(); |
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$container->add( $this->_build_titles() ); |
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$container->add( $this->_build_graph() ); |
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return $container->render($indent_level, $output_debug); |
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} |
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|
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/** |
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* This is a stub meant to provide a means |
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* for doing any data parsing/munging |
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* prior to actually building the svg |
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* for the graph output. |
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* |
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*/ |
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function _prepare_data() { |
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return NULL; |
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} |
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|
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|
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/** |
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* This is a stub for building the title(s) |
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* for the graph |
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* |
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* @return Container |
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*/ |
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function _build_titles() { |
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return $this->_build_title(); |
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} |
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|
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/** |
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* This is a stub that the child class |
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* must override to build the actual |
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* graph |
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* |
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* @return Container |
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*/ |
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function _build_graph() { |
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return NULL; |
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} |
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|
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|
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/****************************/ |
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/* options functions */ |
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/****************************/ |
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|
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|
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/** |
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* This function is used to set |
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* a particular option for the |
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* graph |
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* |
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* @param string - the option name |
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* @param mixed - the value |
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*/ |
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function set_option( $name, $value ) { |
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$this->_options[$name] = $value; |
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} |
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|
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/** |
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* This function retuns the value |
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* of 1 option |
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* |
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* @param string - the option name |
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* @return mixed - the value |
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*/ |
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function get_option($name) { |
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return $this->_options[$name]; |
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} |
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|
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/** |
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* This returns the array of ALL |
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* of the options for this graph |
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* |
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* @return array |
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*/ |
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function get_options() { |
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return $this->_options; |
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} |
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|
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|
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/** |
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* This method sets the title for |
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* the graph |
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* |
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* @param string - the graph's title |
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*/ |
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function set_title($title) { |
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$this->_options["title"] = $title; |
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} |
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|
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/** |
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* This method sets the title for |
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* the graph |
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* |
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* @param string - the graph's title |
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*/ |
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function set_title_style($style) { |
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$this->_options["title_style"] = $style; |
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} |
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|
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/** |
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* This method sets the width |
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* of the graph |
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* |
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* @param int - the width |
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*/ |
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function set_width($width) { |
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$this->_options["width"] = $width; |
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} |
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|
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/** |
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* This method sets the height |
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* of the graph |
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* |
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* @param int - the height |
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*/ |
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function set_height($height) { |
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$this->_options["height"] = $height; |
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} |
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|
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/** |
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* This method sets the width |
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* of font in pixels for the |
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* Graph Title. |
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* |
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* @param int - the width |
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*/ |
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function set_title_font_width($width) { |
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$this->_options["title_font_width"] = $width; |
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} |
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|
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/** |
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* This method sets the height |
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* of font in pixels for the |
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* Graph Title. |
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* |
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* @param int - the height |
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*/ |
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function set_title_font_height($height) { |
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$this->_options["title_font_height"] = $height; |
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} |
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|
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|
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/** |
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* This method sets the width |
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* of font used in calculating |
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* the x and y axis point fonts. |
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* |
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* @param int - the width |
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*/ |
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function set_axis_font_width($width) { |
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$this->_options["axis_font_width"] = $width; |
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} |
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|
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/** |
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* This method sets the height |
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* of font used in calculating |
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* the x and y axis point fonts. |
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* |
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* @param int - the height |
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*/ |
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function set_axis_font_height($height) { |
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$this->_options["axis_font_height"] = $height; |
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} |
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|
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|
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/** |
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* This function will format the axis label |
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* |
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* @param string - the number |
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* @return string - the formated # |
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*/ |
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function format_label($number) { |
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return sprintf("%.2f",$number); |
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} |
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|
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|
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/** |
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* This method builds the text title area |
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* that lives on top of the graph |
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* |
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* @return TEXTsvgtag |
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*/ |
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function _build_title() { |
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$x = ($this->_draw["x2"] - $this->_draw["x1"])/2 - |
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((strlen($this->_options["title"])*$this->_options["title_font_width"])/4); |
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$text = svg_text($x,20); |
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$text->set_style($this->_options["title_style"]); |
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$text->add( $this->_options["title"] ); |
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$text->set_collapse(); |
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return $text; |
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} |
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} |
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?> |
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