/**
* Render the legend to an SVG object
*
* @param RenderContext $ctx The context to use for rendering this legend
*
* @return DOMElement The SVG representation of this legend
*/
public function toSvg(RenderContext $ctx)
{
$outer = new Canvas('legend', new LayoutBox(0, 0, 100, 100));
$outer->getLayout()->setPadding(2, 2, 2, 2);
$nrOfColumns = 4;
$topstep = 10 / $nrOfColumns + 2;
$top = 0;
$left = 0;
$lastLabelEndPos = -1;
foreach ($this->dataset as $color => $text) {
$leftstep = 100 / $nrOfColumns + strlen($text);
// Make sure labels don't overlap each other
while ($lastLabelEndPos >= $left) {
$left += $leftstep;
}
// When a label is longer than the available space, use the next line
if ($left + strlen($text) > 100) {
$top += $topstep;
$left = 0;
}
$colorBox = new Rect($left, $top, 2, 2);
$colorBox->setFill($color)->setStrokeWidth(2);
$colorBox->keepRatio();
$outer->addElement($colorBox);
$textBox = new Text($left + 5, $top + 2, $text);
$textBox->setFontSize('2em');
$outer->addElement($textBox);
// readjust layout
$lastLabelEndPos = $left + strlen($text);
$left += $leftstep;
}
$svg = $outer->toSvg($ctx);
return $svg;
}
/**
* Return the SVG representation of this graph
*
* @param RenderContext $ctx The context to use for drawings
*
* @return DOMElement The SVG representation of this graph
*/
public function toSvg(RenderContext $ctx)
{
$outerBox = new Canvas('outerGraph', new LayoutBox(0, 0, 100, 100));
$innerBox = new Canvas('graph', new LayoutBox(0, 0, 100, 100));
$labelBox = $ctx->getDocument()->createElement('g');
if (!$this->noCaption) {
$innerBox->getLayout()->setPadding(10, 10, 10, 10);
}
$this->createContentClipBox($innerBox);
$this->renderPies($innerBox, $labelBox);
$innerBox->addElement(new RawElement($labelBox));
$outerBox->addElement($innerBox);
return $outerBox->toSvg($ctx);
}
/**
* Return the SVG representation of this graph
*
* @param RenderContext $ctx The context to use for drawings
*
* @return DOMElement The SVG representation of this graph
*/
public function toSvg(RenderContext $ctx)
{
$labelBox = $ctx->getDocument()->createElement('g');
if (!$this->noCaption) {
// Scale SVG to make room for captions
$outerBox = new Canvas('outerGraph', new LayoutBox(33, -5, 40, 40));
$innerBox = new Canvas('graph', new LayoutBox(0, 0, 100, 100));
$innerBox->getLayout()->setPadding(10, 10, 10, 10);
} else {
$outerBox = new Canvas('outerGraph', new LayoutBox(1.5, -10, 124, 124));
$innerBox = new Canvas('graph', new LayoutBox(0, 0, 100, 100));
$innerBox->getLayout()->setPadding(0, 0, 0, 0);
}
$this->createContentClipBox($innerBox);
$this->renderPies($innerBox, $labelBox);
$innerBox->addElement(new RawElement($labelBox));
$outerBox->addElement($innerBox);
return $outerBox->toSvg($ctx);
}
