/**
* Returns the path for a guideline, and sets dimensions of the straight bit
*/
protected function GuidelinePath($axis, $value, $depth, &$x, &$y, &$w, &$h)
{
if ($depth == SVGG_GUIDELINE_ABOVE) {
return parent::GuidelinePath($axis, $value, $depth, $x, $y, $w, $h);
}
$y_axis_pos = $this->height - $this->pad_bottom - $this->y_axes[$this->main_y_axis]->Zero();
$x_axis_pos = $this->pad_left + $this->x_axes[$this->main_x_axis]->Zero();
$z = $this->depth * $this->depth_unit;
list($xd, $yd) = $this->Project(0, 0, $z);
if ($axis == 'x') {
$x1 = $x_axis_pos + $value * $this->x_axes[$this->main_x_axis]->Unit();
$y1 = $y_axis_pos;
$x = $xd + $x1;
$y = $this->pad_top;
$w = 0;
if ($h == 0) {
$h = $this->g_height;
} elseif ($h < 0) {
$h = -$h;
return "M{$x} {$y}v{$h}";
} else {
$y = $this->height - $this->pad_bottom + $yd - $h;
}
} else {
$x1 = $x_axis_pos;
$y1 = $y_axis_pos - $value * $this->y_axes[$this->main_y_axis]->Unit();
$x = $this->pad_left + $xd;
$y = $yd + $y1;
$h = 0;
if ($w == 0) {
$w = $this->g_width;
} elseif ($w < 0) {
$w = -$w;
$x = $this->pad_left + $xd + $this->g_width - $w;
return "M{$x} {$y}h{$w}";
}
}
return "M{$x} {$y}l{$w} {$h}M{$x1} {$y1} l{$xd} {$yd}";
}
/**
* Returns the style options for bar labels
*/
public function DataLabelStyle($dataset, $index, &$item)
{
$style = parent::DataLabelStyle($dataset, $index, $item);
// bar label settings can override global settings
$opts = array('font' => 'bar_label_font', 'font_size' => 'bar_label_font_size', 'font_weight' => 'bar_label_font_weight', 'colour' => 'bar_label_colour', 'altcolour' => 'bar_label_colour_above', 'space' => 'bar_label_space');
foreach ($opts as $key => $opt) {
if (isset($this->settings[$opt])) {
$style[$key] = $this->settings[$opt];
}
}
return $style;
}
/**
* Overload to measure keys
*/
protected function LabelAdjustment($longest_v = 1000, $longest_h = 100)
{
GridGraph::LabelAdjustment($longest_h, $longest_v);
}
/**
* Returns the position for a data label
*/
public function DataLabelPosition($dataset, $index, &$item, $x, $y, $w, $h, $label_w, $label_h)
{
$pos = parent::DataLabelPosition($dataset, $index, $item, $x, $y, $w, $h, $label_w, $label_h);
// labels don't fit inside markers
$pos = str_replace(array('inner', 'inside'), '', $pos);
if (strpos($pos, 'middle') !== FALSE && strpos($pos, 'right') === FALSE && strpos($pos, 'left') === FALSE) {
$pos = str_replace('middle', 'top', $pos);
}
if (strpos($pos, 'centre') !== FALSE && strpos($pos, 'top') === FALSE && strpos($pos, 'bottom') === FALSE) {
$pos = str_replace('centre', 'top', $pos);
}
$pos = 'outside ' . $pos;
return $pos;
}
/**
* Overload to flip axes
*/
protected function LabelAdjustment($longest_v = 1000, $longest_h = 100)
{
parent::LabelAdjustment($longest_h, $longest_v);
}
/**
* Slightly less restrictive than the radar graph
*/
protected function CheckValues(&$values)
{
GridGraph::CheckValues($values);
if ($this->GetHorizontalCount() < 2) {
throw new Exception('Not enough values for line graph');
}
if ($this->multi_graph->GetMinValue() < 0) {
throw new Exception('Negative value for radar graph');
}
}
