widgets/svg/SVGGraph.inc

<?php
/**
 * This file holds the base Graph class for doing
 * SVG graphs
 *
 * $Id: SVGGraph.inc,v 1.5 2003/03/04 22:15:18 hemna Exp $
 *
 * @author Walter A. Boring IV <waboring@buildabetterweb.com>
 * @package phpHtmlLib
 * @subpackage SVG
 */ 

/**
 * This is the base Graph class for doing
 * SVG graphs
 *
 * $Id: SVGGraph.inc,v 1.5 2003/03/04 22:15:18 hemna Exp $
 *
 * @author Walter A. Boring IV <waboring@buildabetterweb.com>
 * @package phpHtmlLib
 * @subpackage SVG
 */
class SVGGraph extends BaseWidget {


    /**
     * This array holds various
     * config options for this graph
     */
    var $_options = array("title" => "",
                          "title_style" => "font-size:20px;font-weight:bold;font-family: geneva, trebuchet ms",
                          "width" => 100,
                          "height" => 100,
                          "left_margin" => 5,
                          "right_margin" => 0,
                          "top_margin" => 20,
                          "bottom_margin" => 0,
                          "title_font_width" => 10,
                          "title_font_height" => 20,
                          "axis_font_width" => 5,
                          "axis_font_height" => 8,
                          "axis_label_font_width" => 12,
                          "axis_label_font_height" => 12);


    /**
     * Various calculated image properties
     *
     */
    var $_draw = array();


    function SVGGraph($title, $width, $height) {
        $this->set_title($title);
        $this->set_width($width);
        $this->set_height($height);
    }


    function render($indent_level=0, $output_debug=0) {
        //do any data parsing/munging/calculating
        $this->_prepare_data();

        $container = container();
        $container->add( $this->_build_titles() );
        $container->add( $this->_build_graph() );
        return $container->render($indent_level, $output_debug);
    }

    /**
     * This is a stub meant to provide a means
     * for doing any data parsing/munging
     * prior to actually building the svg
     * for the graph output.
     *
     */
    function _prepare_data() {
        return NULL;
    }


    /**
     * This is a stub for building the title(s)
     * for the graph
     *
     * @return Container
     */
    function _build_titles() {
        return $this->_build_title();
    }

    /**
     * This is a stub that the child class
     * must override to build the actual
     * graph
     *
     * @return Container
     */
    function _build_graph() {
        return NULL;
    }


    /****************************/
    /*    options functions     */
    /****************************/


    /**
     * This function is used to set
     * a particular option for the
     * graph
     *
     * @param string - the option name
     * @param mixed - the value
     */
    function set_option( $name, $value ) {
        $this->_options[$name] = $value;
    }

    /**
     * This function retuns the value
     * of 1 option
     *
     * @param string - the option name
     * @return mixed - the value
     */
    function get_option($name) {
        return $this->_options[$name];
    }

    /**
     * This returns the array of ALL
     * of the options for this graph
     *
     * @return array
     */
    function get_options() {
        return $this->_options;
    }


    /**
     * This method sets the title for
     * the graph
     *
     * @param string - the graph's title     
     */
    function set_title($title) {
        $this->_options["title"] = $title;
    }

    /**
     * This method sets the title for
     * the graph
     *
     * @param string - the graph's title     
     */
    function set_title_style($style) {
        $this->_options["title_style"] = $style;
    }

    /**
     * This method sets the width
     * of the graph
     *
     * @param int - the width
     */
    function set_width($width) {
        $this->_options["width"] = $width;
    }

    /**
     * This method sets the height
     * of the graph
     *
     * @param int - the height
     */
    function set_height($height) {
        $this->_options["height"] = $height;
    }
    
    /**
     * This method sets the width
     * of font in pixels for the 
     * Graph Title.   
     *
     * @param int - the width
     */
    function set_title_font_width($width) {
        $this->_options["title_font_width"] = $width;
    }

    /**
     * This method sets the height
     * of font in pixels for the 
     * Graph Title. 
     *
     * @param int - the height
     */
    function set_title_font_height($height) {
        $this->_options["title_font_height"] = $height;
    }


    /**
     * This method sets the width
     * of font used in calculating
     * the x and y axis point fonts.
     *
     * @param int - the width
     */
    function set_axis_font_width($width) {
        $this->_options["axis_font_width"] = $width;
    }

    /**
     * This method sets the height
     * of font used in calculating
     * the x and y axis point fonts.
     *
     * @param int - the height
     */
    function set_axis_font_height($height) {
        $this->_options["axis_font_height"] = $height;
    }


    /**
     * This function will format the axis label
     *
     * @param string - the number
     * @return string - the formated #
     */
    function format_label($number) {
        return sprintf("%.2f",$number);
    }


    /**
     * This method builds the text title area
     * that lives on top of the graph
     *
     * @return TEXTsvgtag
     */
    function _build_title() {
        $x = ($this->_draw["x2"] - $this->_draw["x1"])/2 -
            ((strlen($this->_options["title"])*$this->_options["title_font_width"])/4);
        $text = svg_text($x,20);
        $text->set_style($this->_options["title_style"]);
        $text->add( $this->_options["title"] );
        $text->set_collapse();
        return $text;
    }    
}
?>
1	<?php
2	/**
3	* This file holds the base Graph class for doing
4	* SVG graphs
5	*
6	* $Id: SVGGraph.inc,v 1.5 2003/03/04 22:15:18 hemna Exp $
7	*
8	* @author Walter A. Boring IV <waboring@buildabetterweb.com>
9	* @package phpHtmlLib
10	* @subpackage SVG
11	*/
12
13	/**
14	* This is the base Graph class for doing
15	* SVG graphs
16	*
17	* $Id: SVGGraph.inc,v 1.5 2003/03/04 22:15:18 hemna Exp $
18	*
19	* @author Walter A. Boring IV <waboring@buildabetterweb.com>
20	* @package phpHtmlLib
21	* @subpackage SVG
22	*/
23	class SVGGraph extends BaseWidget {
24
25
26	/**
27	* This array holds various
28	* config options for this graph
29	*/
30	var $_options = array("title" => "",
31	"title_style" => "font-size:20px;font-weight:bold;font-family: geneva, trebuchet ms",
32	"width" => 100,
33	"height" => 100,
34	"left_margin" => 5,
35	"right_margin" => 0,
36	"top_margin" => 20,
37	"bottom_margin" => 0,
38	"title_font_width" => 10,
39	"title_font_height" => 20,
40	"axis_font_width" => 5,
41	"axis_font_height" => 8,
42	"axis_label_font_width" => 12,
43	"axis_label_font_height" => 12);
44
45
46	/**
47	* Various calculated image properties
48	*
49	*/
50	var $_draw = array();
51
52
53	function SVGGraph($title, $width, $height) {
54	$this->set_title($title);
55	$this->set_width($width);
56	$this->set_height($height);
57	}
58
59
60	function render($indent_level=0, $output_debug=0) {
61	//do any data parsing/munging/calculating
62	$this->_prepare_data();
63
64	$container = container();
65	$container->add( $this->_build_titles() );
66	$container->add( $this->_build_graph() );
67	return $container->render($indent_level, $output_debug);
68	}
69
70	/**
71	* This is a stub meant to provide a means
72	* for doing any data parsing/munging
73	* prior to actually building the svg
74	* for the graph output.
75	*
76	*/
77	function _prepare_data() {
78	return NULL;
79	}
80
81
82	/**
83	* This is a stub for building the title(s)
84	* for the graph
85	*
86	* @return Container
87	*/
88	function _build_titles() {
89	return $this->_build_title();
90	}
91
92	/**
93	* This is a stub that the child class
94	* must override to build the actual
95	* graph
96	*
97	* @return Container
98	*/
99	function _build_graph() {
100	return NULL;
101	}
102
103
104	/****************************/
105	/* options functions */
106	/****************************/
107
108
109	/**
110	* This function is used to set
111	* a particular option for the
112	* graph
113	*
114	* @param string - the option name
115	* @param mixed - the value
116	*/
117	function set_option( $name, $value ) {
118	$this->_options[$name] = $value;
119	}
120
121	/**
122	* This function retuns the value
123	* of 1 option
124	*
125	* @param string - the option name
126	* @return mixed - the value
127	*/
128	function get_option($name) {
129	return $this->_options[$name];
130	}
131
132	/**
133	* This returns the array of ALL
134	* of the options for this graph
135	*
136	* @return array
137	*/
138	function get_options() {
139	return $this->_options;
140	}
141
142
143	/**
144	* This method sets the title for
145	* the graph
146	*
147	* @param string - the graph's title
148	*/
149	function set_title($title) {
150	$this->_options["title"] = $title;
151	}
152
153	/**
154	* This method sets the title for
155	* the graph
156	*
157	* @param string - the graph's title
158	*/
159	function set_title_style($style) {
160	$this->_options["title_style"] = $style;
161	}
162
163	/**
164	* This method sets the width
165	* of the graph
166	*
167	* @param int - the width
168	*/
169	function set_width($width) {
170	$this->_options["width"] = $width;
171	}
172
173	/**
174	* This method sets the height
175	* of the graph
176	*
177	* @param int - the height
178	*/
179	function set_height($height) {
180	$this->_options["height"] = $height;
181	}
182
183	/**
184	* This method sets the width
185	* of font in pixels for the
186	* Graph Title.
187	*
188	* @param int - the width
189	*/
190	function set_title_font_width($width) {
191	$this->_options["title_font_width"] = $width;
192	}
193
194	/**
195	* This method sets the height
196	* of font in pixels for the
197	* Graph Title.
198	*
199	* @param int - the height
200	*/
201	function set_title_font_height($height) {
202	$this->_options["title_font_height"] = $height;
203	}
204
205
206	/**
207	* This method sets the width
208	* of font used in calculating
209	* the x and y axis point fonts.
210	*
211	* @param int - the width
212	*/
213	function set_axis_font_width($width) {
214	$this->_options["axis_font_width"] = $width;
215	}
216
217	/**
218	* This method sets the height
219	* of font used in calculating
220	* the x and y axis point fonts.
221	*
222	* @param int - the height
223	*/
224	function set_axis_font_height($height) {
225	$this->_options["axis_font_height"] = $height;
226	}
227
228
229	/**
230	* This function will format the axis label
231	*
232	* @param string - the number
233	* @return string - the formated #
234	*/
235	function format_label($number) {
236	return sprintf("%.2f",$number);
237	}
238
239
240	/**
241	* This method builds the text title area
242	* that lives on top of the graph
243	*
244	* @return TEXTsvgtag
245	*/
246	function _build_title() {
247	$x = ($this->_draw["x2"] - $this->_draw["x1"])/2 -
248	((strlen($this->_options["title"])*$this->_options["title_font_width"])/4);
249	$text = svg_text($x,20);
250	$text->set_style($this->_options["title_style"]);
251	$text->add( $this->_options["title"] );
252	$text->set_collapse();
253	return $text;
254	}
255	}
256	?>
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