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<?php
/** @file
* This file is part of Google Chart PHP library.
*
* Copyright (c) 2010 Rémi Lanvin <remi@cloudconnected.fr>
*
* Licensed under the MIT license.
*
* For the full copyright and license information, please view the LICENSE file.
*/
/**
* An Axis.
*/
class GoogleChartAxis
{
const ALIGN_LEFT = -1;
const ALIGN_CENTER = 0;
const ALIGN_RIGHT = 1;
/**
* @var string Name of the axis
*/
protected $name = null;
/**
* @var array
*/
protected $labels = null;
protected $range = null;
protected $tick_marks = null;
protected $style = null;
protected $chxs = 0;
protected $label_color = '666666';
protected $font_size = '11';
protected $label_alignment = null;
protected $draw_line = true;
protected $draw_tick_marks = true;
protected $tick_color = '666666';
protected $label_positions = null;
/**
* Create a new axis.
*
* @param string $name The name of the axis. Supported axis are 'x', 'y', 't' (top) or 'r' (right).
*/
public function __construct($name)
{
switch ( $name ) {
case 'x':
case 't':
$this->label_alignment = 0;
break;
case 'r':
$this->label_alignment = -1;
break;
case 'y':
$this->label_alignment = 1;
break;
default:
throw new InvalidArgumentException('Axis names must be x, y, t or r.');
}
$this->name = $name;
}
/**
* Returns the name.
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Custom axis labels (chxl).
*
* @see http://code.google.com/apis/chart/docs/chart_params.html#axis_labels
*/
public function setLabels(array $labels)
{
$this->labels = $labels;
return $this;
}
public function getLabels($compute = true)
{
if ( ! $compute ) {
return $this->labels;
}
if ( $this->labels === null )
return null;
return '%d:|'.implode('|',$this->labels);
}
public function hasCustomLabels()
{
return $this->labels !== null;
}
/**
* Axis ranges (chxr).
*
* Specify the range of values that appear.
*
* @see http://code.google.com/apis/chart/docs/chart_params.html#axis_range
*/
public function setRange($start_val, $end_val, $step = false)
{
$this->range = array(
'start_val' => $start_val === null ? 0 : $start_val,
'end_val' => $end_val === null ? 100 : $end_val,
'step' => $step === null ? false : $step
);
return $this;
}
public function getRange($compute = true)
{
if ( ! $compute )
return $this->range;
if ( $this->range === null )
return null;
$str = '%d,'.$this->range['start_val'].','.$this->range['end_val'];
if ( $this->range['step'] !== false )
$str .= ','.$this->range['step'];
return $str;
}
/**
* Axis Tick Mark Styles (chxtc)
*
* @see http://code.google.com/apis/chart/docs/chart_params.html#axis_tick_marks
*/
public function setTickMarks()
{
$this->tick_marks = func_get_args();
if ( ! isset($this->tick_marks[0]) )
$this->tick_marks = null;
return $this;
}
public function getTickMarks($compute = true)
{
if ( ! $compute )
return $this->tick_marks;
if ( $this->tick_marks === null )
return null;
return '%d,'.implode(',',$this->tick_marks);
}
/**
* @c chxp
*/
public function setLabelPositions()
{
$this->label_positions = func_get_args();
if ( ! isset($this->label_positions[0]) )
$this->label_positions = null;
return $this;
}
public function computeChxp($axis_index)
{
if ( ! $this->label_positions )
return null;
$str = $axis_index.','.implode(',',$this->label_positions);
return $str;
}
public function hasChxp()
{
return $this->label_positions !== null;
}
/**
* @name Axis style (chxs)
*/
//@{
/**
* @since 0.4
*/
public function setLabelFormat()
{
if ( $this->chxs < 1 ) {
$this->chxs = 1;
}
// @todo
return $this;
}
/**
* @since 0.4
*/
public function setLabelColor($color)
{
if ( $this->chxs < 1 ) {
$this->chxs = 1;
}
$this->label_color = $color;
return $this;
}
/**
* @since 0.4
*/
public function setFontSize($size)
{
if ( $this->chxs < 2 ) {
$this->chxs = 2;
}
$this->font_size = $size;
return $this;
}
/**
* @since 0.4
*/
public function setLabelAlignment($alignment)
{
if ( $this->chxs < 3 ) {
$this->chxs = 3;
}
$this->label_alignment = $alignment;
return $this;
}
/**
* @since 0.4
*/
public function setDrawLine($line)
{
if ( $this->chxs < 4 ) {
$this->chxs = 4;
}
$this->draw_line = $line;
return $this;
}
/**
* @since 0.4
*/
public function setDrawTickMarks($tick_marks)
{
if ( $this->chxs < 4 ) {
$this->chxs = 4;
}
$this->draw_tick_marks = $tick_marks;
return $this;
}
/**
* @since 0.4
*/
public function setTickColor($tick_color)
{
if ( $this->chxs < 5 ) {
$this->chxs = 5;
}
$this->tick_color = $tick_color;
return $this;
}
/**
* @since 0.5
*/
public function computeChxs($axis_index, $chart_type = null)
{
// Parameter not needed for this axis
if ( ! $this->chxs )
return null;
// Axis index (provided by GoogleChart class at runtime)
$str = $axis_index;
// @todo format string
$str .= ','.$this->label_color;
if ( $this->chxs > 1 ) {
$str .= ','.$this->font_size;
if ( $this->chxs > 2 ) {
$str .= ','.$this->label_alignment;
if ( $this->chxs > 3 ) {
$str .= ',';
if ( ! $this->draw_line && ! $this->draw_tick_marks ) {
$str .= '_';
}
else {
if ( $this->draw_line ) {
$str .= 'l';
}
if ( $this->draw_tick_marks ) {
$str .= 't';
}
}
// Not supported in Google-o-meter
if ( $this->chxs > 4 && $chart_type != 'gom') {
$str .= ','.$this->tick_color;
}
}
}
}
return $str;
}
public function getLabelFormat($compute = true)
{
}
//@}
}