1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
<?php
/**
* File containing the ezcGraphChartElementLabeledAxis 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
*/
/**
* Class to represent a labeled axis. Values on the x axis are considered as
* strings and used in the given order.
*
* @package Graph
*/
class ezcGraphChartElementLabeledAxis extends ezcGraphChartElementAxis
{
/**
* Array with labeles for data
*
* @var array
*/
protected $labels = array();
/**
* Reduced amount of labels which will be displayed in the chart
*
* @var array
*/
protected $displayedLabels = array();
/**
* Maximum count of labels which can be displayed on one axis
* @TODO: Perhaps base this on the chart size
*/
const MAX_LABEL_COUNT = 10;
/**
* Constructor
*
* @param array $options Default option array
* @return void
* @ignore
*/
public function __construct( array $options = array() )
{
$this->axisLabelRenderer = new ezcGraphAxisCenteredLabelRenderer();
parent::__construct( $options );
}
/**
* Increase the keys of all elements in the array up from the start key, to
* insert an additional element at the correct position.
*
* @param array $array Array
* @param int $startKey Key to increase keys from
* @return array Updated array
*/
protected function increaseKeys( array $array, $startKey )
{
foreach ( $array as $key => $value )
{
if ( $key === $startKey )
{
// Recursive check, if next key should be increased, too
if ( isset ( $array[$key + 1] ) )
{
$array = $this->increaseKeys( $array, $key + 1 );
}
// Increase key
$array[$key + 1] = $array[$key];
unset( $array[$key] );
}
}
return $array;
}
/**
* Add data for this axis
*
* @param mixed $value Value which will be displayed on this axis
* @return void
*/
public function addData( array $values )
{
$position = 0;
foreach ( $values as $label )
{
$label = (string) $label;
if ( !in_array( $label, $this->labels, true ) )
{
if ( isset( $this->labels[$position] ) )
{
$this->labels = $this->increaseKeys( $this->labels, $position );
$this->labels[$position++] = $label;
}
else
{
$this->labels[$position++] = $label;
}
}
else
{
$position = array_search( $label, $this->labels, true ) + 1;
}
}
ksort( $this->labels );
}
/**
* Calculate axis bounding values on base of the assigned values
*
* @abstract
* @access public
* @return void
*/
public function calculateAxisBoundings()
{
$labelCount = count( $this->labels ) - 1;
if ( $labelCount <= self::MAX_LABEL_COUNT )
{
$this->displayedLabels = $this->labels;
return true;
}
for ( $div = self::MAX_LABEL_COUNT; $div > 0; --$div )
{
if ( ( $labelCount % $div ) === 0 )
{
$step = $labelCount / $div;
foreach ( $this->labels as $nr => $label )
{
if ( ( $nr % $step ) === 0 )
{
$this->displayedLabels[] = $label;
}
}
return true;
}
}
}
/**
* Get coordinate for a dedicated value on the chart
*
* @param ezcGraphBounding $boundings
* @param string $value Value to determine position for
* @return float Position on chart
*/
public function getCoordinate( $value )
{
if ( $value === false ||
$value === null ||
( $key = array_search( $value, $this->labels ) ) === false )
{
switch ( $this->position )
{
case ezcGraph::LEFT:
case ezcGraph::TOP:
return 0.;
case ezcGraph::RIGHT:
case ezcGraph::BOTTOM:
return 1.;
}
}
else
{
switch ( $this->position )
{
case ezcGraph::LEFT:
case ezcGraph::TOP:
return (float) $key / ( count ( $this->labels ) - 1 );
case ezcGraph::BOTTOM:
case ezcGraph::RIGHT:
return (float) 1 - $key / ( count ( $this->labels ) - 1 );
}
}
}
/**
* Return count of minor steps
*
* @return integer Count of minor steps
*/
public function getMinorStepCount()
{
return 0;
}
/**
* Return count of major steps
*
* @return integer Count of major steps
*/
public function getMajorStepCount()
{
return count( $this->displayedLabels ) - 1;
}
/**
* Get label for a dedicated step on the axis
*
* @param integer $step Number of step
* @return string label
*/
public function getLabel( $step )
{
if ( isset( $this->displayedLabels[$step] ) )
{
return $this->displayedLabels[$step];
}
else
{
return false;
}
}
/**
* Is zero step
*
* Returns true if the given step is the one on the initial axis position
*
* @param int $step Number of step
* @return bool Status If given step is initial axis position
*/
public function isZeroStep( $step )
{
return !$step;
}
}
?>
|
