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authorKore Nordmann <github@kore-nordmann.de>2007-05-02 13:18:04 +0000
committerKore Nordmann <github@kore-nordmann.de>2007-05-02 13:18:04 +0000
commitad12ebb93d05c9180e289dda8e0d3ff843450f58 (patch)
tree030e06ed07dd78c6077619dbc1745c1db3ffd345 /src/charts
parentfc7b75257c43cc6ddf7db3ed0d3f3da08ffc4e40 (diff)
downloadzetacomponents-graph-ad12ebb93d05c9180e289dda8e0d3ff843450f58.zip
zetacomponents-graph-ad12ebb93d05c9180e289dda8e0d3ff843450f58.tar.gz
- Implemented radar label renderer for correct grid in radar charts
Diffstat (limited to 'src/charts')
-rw-r--r--src/charts/radar.php166
1 files changed, 110 insertions, 56 deletions
diff --git a/src/charts/radar.php b/src/charts/radar.php
index a3913ba..19b6984 100644
--- a/src/charts/radar.php
+++ b/src/charts/radar.php
@@ -59,13 +59,12 @@
class ezcGraphRadarChart extends ezcGraphChart
{
/**
- * Virtual not drawn axis for label calculation
- * @TODO: Do we want to expose this axis to the user?
+ * Store major grid color for child axis.
*
- * @var ezcGraphChartElementLabeledAxis
+ * @var ezcGraphColor
*/
- protected $virtualYAxis;
-
+ protected $childAxisColor;
+
/**
* Constructor
*
@@ -80,16 +79,32 @@ class ezcGraphRadarChart extends ezcGraphChart
parent::__construct();
- $this->virtualYAxis = new ezcGraphChartElementLabeledAxis();
+ $this->elements['rotationAxis'] = new ezcGraphChartElementLabeledAxis();
$this->addElement( 'axis', new ezcGraphChartElementNumericAxis() );
$this->elements['axis']->position = ezcGraph::BOTTOM;
- $this->elements['axis']->axisLabelRenderer = new ezcGraphAxisCenteredLabelRenderer();
+ $this->elements['axis']->axisLabelRenderer = new ezcGraphAxisRadarLabelRenderer();
$this->elements['axis']->axisLabelRenderer->outerStep = true;
+ $this->addElement( 'rotationAxis', new ezcGraphChartElementLabeledAxis() );
+
// Do not render axis with default method, because we need an axis for
// each label in dataset
$this->renderElement['axis'] = false;
+ $this->renderElement['rotationAxis'] = false;
+ }
+
+ /**
+ * Set colors and border fro this element
+ *
+ * @param ezcGraphPalette $palette Palette
+ * @return void
+ */
+ public function setFromPalette( ezcGraphPalette $palette )
+ {
+ $this->childAxisColor = $palette->majorGridColor;
+
+ parent::setFromPalette( $palette );
}
/**
@@ -112,6 +127,19 @@ class ezcGraphRadarChart extends ezcGraphChart
{
$this->addElement( 'axis', $propertyValue );
$this->elements['axis']->position = ezcGraph::BOTTOM;
+ $this->elements['axis']->axisLabelRenderer = new ezcGraphAxisRadarLabelRenderer();
+ $this->renderElement['axis'] = false;
+ }
+ else
+ {
+ throw new ezcBaseValueException( $propertyName, $propertyValue, 'ezcGraphChartElementAxis' );
+ }
+ break;
+ case 'rotationAxis':
+ if ( $propertyValue instanceof ezcGraphChartElementAxis )
+ {
+ $this->addElement( 'rotationAxis', $propertyValue );
+ $this->renderElement['rotationAxis'] = false;
}
else
{
@@ -134,6 +162,62 @@ class ezcGraphRadarChart extends ezcGraphChart
}
/**
+ * Draws a single rotated axis
+ *
+ * Sets the axis label position depending on the axis rotation.
+ *
+ * @param ezcGraphChartElementAxis $axis
+ * @param float $postion
+ * @param float $lastPosition
+ * @return void
+ */
+ protected function drawRotatedAxis( ezcGraphChartElementAxis $axis, ezcGraphBoundings $boundings, ezcGraphCoordinate $center, $position, $lastPosition = null )
+ {
+ // Set axis position depending on angle for better axis label
+ // positioning
+ $angle = $position * 2 * M_PI;
+ switch ( (int) ( ( $position + .125 ) * 4 ) )
+ {
+ case 0:
+ case 4:
+ $axis->position = ezcGraph::BOTTOM;
+ break;
+ case 1:
+ $axis->position = ezcGraph::LEFT;
+ break;
+ case 2:
+ $axis->position = ezcGraph::TOP;
+ break;
+ case 3:
+ $axis->position = ezcGraph::RIGHT;
+ break;
+ }
+
+ // Set last step to correctly draw grid
+ if ( $axis->axisLabelRenderer instanceof ezcGraphAxisRadarLabelRenderer )
+ {
+ $axis->axisLabelRenderer->lastStep = $lastPosition;
+ }
+
+ // Do not draw axis label for last step
+ if ( abs( $position - 1 ) <= .001 )
+ {
+ $axis->label = null;
+ }
+
+ $this->renderer->drawAxis(
+ $boundings,
+ clone $center,
+ $dest = new ezcGraphCoordinate(
+ $center->x + sin( $angle ) * ( $boundings->width / 2 ),
+ $center->y - cos( $angle ) * ( $boundings->height / 2 )
+ ),
+ clone $axis,
+ clone $axis->axisLabelRenderer
+ );
+ }
+
+ /**
* Render the assigned data
*
* Will renderer all charts data in the remaining boundings after drawing
@@ -159,47 +243,28 @@ class ezcGraphRadarChart extends ezcGraphChart
$nr = $count = count( $this->data );
// Draw axis at major steps of virtual axis
- $steps = $this->virtualYAxis->getSteps();
+ $steps = $this->elements['rotationAxis']->getSteps();
+ $lastStepPosition = null;
+ $axisColor = $this->elements['axis']->border;
foreach ( $steps as $step )
{
- if ( $step->isLast )
- {
- // Skip last axis
- continue;
- }
+ $this->elements['axis']->label = $step->label;
+ $this->drawRotatedAxis( $this->elements['axis'], $boundings, $center, $step->position, $lastStepPosition );
+ $lastStepPosition = $step->position;
- // Set axis position depending on angle for better label positioning
- $angle = $step->position * 2 * M_PI;
- switch ( (int) ( ( $step->position + .125 ) * 4 ) )
+ if ( count( $step->childs ) )
{
- case 0:
- case 4:
- $this->elements['axis']->position = ezcGraph::BOTTOM;
- break;
- case 1:
- $this->elements['axis']->position = ezcGraph::LEFT;
- break;
- case 2:
- $this->elements['axis']->position = ezcGraph::TOP;
- break;
- case 3:
- $this->elements['axis']->position = ezcGraph::RIGHT;
- break;
+ foreach ( $step->childs as $childStep )
+ {
+ $this->elements['axis']->label = null;
+ $this->elements['axis']->border = $this->childAxisColor;
+
+ $this->drawRotatedAxis( $this->elements['axis'], $boundings, $center, $childStep->position, $lastStepPosition );
+ $lastStepPosition = $childStep->position;
+ }
}
- $this->elements['axis']->label = $step->label;
- $this->elements['axis']->axisLabelRenderer->showLabels = $step->isZero;
-
- $this->renderer->drawAxis(
- $boundings,
- clone $center,
- $dest = new ezcGraphCoordinate(
- $center->x + sin( $angle ) * ( $boundings->width / 2 ),
- $center->y - cos( $angle ) * ( $boundings->height / 2 )
- ),
- clone $this->elements['axis'],
- clone $this->elements['axis']->axisLabelRenderer
- );
+ $this->elements['axis']->border = $axisColor;
}
// Display data
@@ -223,7 +288,7 @@ class ezcGraphRadarChart extends ezcGraphChart
foreach ( $data as $key => $value )
{
$point = new ezcGraphCoordinate(
- $this->virtualYAxis->getCoordinate( $key ),
+ $this->elements['rotationAxis']->getCoordinate( $key ),
$this->elements['axis']->getCoordinate( $value )
);
@@ -308,12 +373,11 @@ class ezcGraphRadarChart extends ezcGraphChart
}
$this->elements['axis']->addData( $values );
- $this->virtualYAxis->labelCount = count( $labels );
- $this->virtualYAxis->addData( $labels );
+ $this->elements['rotationAxis']->addData( $labels );
}
$this->elements['axis']->calculateAxisBoundings();
- $this->virtualYAxis->calculateAxisBoundings();
+ $this->elements['rotationAxis']->calculateAxisBoundings();
// Generate legend
$this->elements['legend']->generateFromDataSets( $this->data );
@@ -327,16 +391,6 @@ class ezcGraphRadarChart extends ezcGraphChart
$boundings->x1 = $this->options->width;
$boundings->y1 = $this->options->height;
- /*
- // This is obsolete ...
- // Should be replaced by radial size reducement based on axis Space
- $boundings = $this->elements['xAxis']->axisLabelRenderer->modifyChartBoundings(
- $this->elements['yAxis']->axisLabelRenderer->modifyChartBoundings(
- $boundings, new ezcGraphCoordinate( 1, 0 )
- ), new ezcGraphCoordinate( -1, 0 )
- );
- */
-
// Render subelements
foreach ( $this->elements as $name => $element )
{
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