* $chart->xAxis->axisLabelRenderer = new ezcGraphAxisRotatedLabelRenderer(); * * // Define angle manually in degree * $chart->xAxis->axisLabelRenderer->angle = 45; * * // Increase axis space * $chart->xAxis->axisSpace = .2; * * * @property float $angle * Angle of labels on axis in degrees. * * @version 1.5beta1 * @package Graph * @mainclass */ class ezcGraphAxisRotatedBoxedLabelRenderer extends ezcGraphAxisRotatedLabelRenderer { /** * Render Axis labels * * Render labels for an axis. * * @param ezcGraphRenderer $renderer Renderer used to draw the chart * @param ezcGraphBoundings $boundings Boundings of the axis * @param ezcGraphCoordinate $start Axis starting point * @param ezcGraphCoordinate $end Axis ending point * @param ezcGraphChartElementAxis $axis Axis instance * @return void */ public function renderLabels( ezcGraphRenderer $renderer, ezcGraphBoundings $boundings, ezcGraphCoordinate $start, ezcGraphCoordinate $end, ezcGraphChartElementAxis $axis, ezcGraphBoundings $innerBoundings = null ) { // receive rendering parameters from axis $this->steps = $steps = $axis->getSteps(); $axisBoundings = new ezcGraphBoundings( $start->x, $start->y, $end->x, $end->y ); // Determine normalized axis direction $this->direction = new ezcGraphVector( $end->x - $start->x, $end->y - $start->y ); $this->direction->unify(); // Get axis space $gridBoundings = null; list( $xSpace, $ySpace ) = $this->getAxisSpace( $renderer, $boundings, $axis, $innerBoundings, $gridBoundings ); // Determine optimal angle if none specified $this->determineAngle( $steps, $xSpace, $ySpace, $axisBoundings ); $degTextAngle = $this->determineTextOffset( $axis, $steps ); $labelLength = $this->calculateLabelLength( $start, $end, $xSpace, $ySpace, $axisBoundings ); // Determine additional required axis space by boxes $firstStep = reset( $steps ); $lastStep = end( $steps ); $this->widthModifier = 1 + $firstStep->width / 2 + $lastStep->width / 2; // Draw steps and grid foreach ( $steps as $nr => $step ) { $position = new ezcGraphCoordinate( $start->x + ( $end->x - $start->x ) * ( $step->position + $step->width ) / $this->widthModifier, $start->y + ( $end->y - $start->y ) * ( $step->position + $step->width ) / $this->widthModifier ); $stepWidth = $step->width / $this->widthModifier; $stepSize = new ezcGraphCoordinate( $axisBoundings->width * $stepWidth, $axisBoundings->height * $stepWidth ); // Calculate label boundings $labelSize = $this->calculateLabelSize( $steps, $nr, $step, $xSpace, $ySpace, $axisBoundings ); $lengthReducement = min( abs( tan( deg2rad( $this->angle ) ) * ( $labelSize / 2 ) ), abs( $labelLength / 2 ) ); $this->renderLabelText( $renderer, $axis, $position, $step->label, $degTextAngle, $labelLength, $labelSize, $lengthReducement ); // Major grid if ( $axis->majorGrid ) { $this->drawGrid( $renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid ); } // Major step $this->drawStep( $renderer, $position, $this->direction, $axis->position, $this->majorStepSize, $axis->border ); } } /** * Modify chart data position * * Optionally additionally modify the coodinate of a data point * * @param ezcGraphCoordinate $coordinate Data point coordinate * @return ezcGraphCoordinate Modified coordinate */ public function modifyChartDataPosition( ezcGraphCoordinate $coordinate ) { $firstStep = reset( $this->steps ); $offset = $firstStep->width / 2 / $this->widthModifier; return new ezcGraphCoordinate( $coordinate->x * abs( $this->direction->y ) + ( $coordinate->x * ( 1 / $this->widthModifier ) * ( 1 - abs( $this->offset ) ) + abs( $this->offset ) + $offset ) * abs( $this->direction->x ), $coordinate->y * abs( $this->direction->x ) + ( $coordinate->y * ( 1 / $this->widthModifier ) * ( 1 - abs( $this->offset ) ) + abs( $this->offset ) + $offset ) * abs( $this->direction->y ) ); } } ?>