/**
* Render the text
*
* @param ezcGraphRenderer $renderer Renderer
* @param ezcGraphBoundings $boundings Boundings for the axis
* @return ezcGraphBoundings Remaining boundings
*/
public function render(ezcGraphRenderer $renderer, ezcGraphBoundings $boundings)
{
$height = (int) min(round($this->properties['maxHeight'] * ($boundings->y1 - $boundings->y0)), $this->properties['font']->maxFontSize + $this->padding * 2 + $this->margin * 2);
switch ($this->properties['position']) {
case ezcGraph::TOP:
$textBoundings = new ezcGraphBoundings($boundings->x0, $boundings->y0, $boundings->x1, $boundings->y0 + $height);
$boundings->y0 += $height + $this->properties['margin'];
break;
case ezcGraph::BOTTOM:
$textBoundings = new ezcGraphBoundings($boundings->x0, $boundings->y1 - $height, $boundings->x1, $boundings->y1);
$boundings->y1 -= $height + $this->properties['margin'];
break;
}
$textBoundings = $renderer->drawBox($textBoundings, $this->properties['background'], $this->properties['border'], $this->properties['borderWidth'], $this->properties['margin'], $this->properties['padding']);
$renderer->drawText($textBoundings, $this->properties['title'], ezcGraph::CENTER | ezcGraph::MIDDLE);
return $boundings;
}
/**
* Render label text.
*
* Render the text of a single label, depending on the position, length and
* rotation of the label.
*
* @param ezcGraphRenderer $renderer
* @param ezcGraphChartElementAxis $axis
* @param ezcGraphCoordinate $position
* @param string $label
* @param float $degTextAngle
* @param float $labelLength
* @param float $labelSize
* @param float $lengthReducement
* @return void
*/
protected function renderLabelText(ezcGraphRenderer $renderer, ezcGraphChartElementAxis $axis, ezcGraphCoordinate $position, $label, $degTextAngle, $labelLength, $labelSize, $lengthReducement)
{
switch (true) {
case $degTextAngle >= 0 && $degTextAngle < 90 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 270 && $degTextAngle < 360 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x, $position->y, $position->x + abs($labelLength) - $lengthReducement, $position->y + $labelSize);
$labelAlignement = ezcGraph::LEFT | ezcGraph::TOP;
$labelRotation = $degTextAngle;
break;
case $degTextAngle >= 90 && $degTextAngle < 180 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 180 && $degTextAngle < 270 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x - abs($labelLength) + $lengthReducement, $position->y, $position->x, $position->y + $labelSize);
$labelAlignement = ezcGraph::RIGHT | ezcGraph::TOP;
$labelRotation = $degTextAngle - 180;
break;
case $degTextAngle >= 180 && $degTextAngle < 270 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 90 && $degTextAngle < 180 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x - abs($labelLength) + $lengthReducement, $position->y - $labelSize, $position->x, $position->y);
$labelAlignement = ezcGraph::RIGHT | ezcGraph::BOTTOM;
$labelRotation = $degTextAngle - 180;
break;
case $degTextAngle >= 270 && $degTextAngle < 360 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 0 && $degTextAngle < 90 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x, $position->y, $position->x - abs($labelLength) + $lengthReducement, $position->y + $labelSize);
$labelAlignement = ezcGraph::LEFT | ezcGraph::TOP;
$labelRotation = $degTextAngle;
break;
}
$renderer->drawText($labelBoundings, $label, $labelAlignement, new ezcGraphRotation($labelRotation, $position));
}
/**
* 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)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$this->steps = $steps;
$axisBoundings = new ezcGraphBoundings($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();
$axisAngle = -$this->direction->angle(new ezcGraphVector(1, 0));
if ($this->outerGrid) {
$gridBoundings = $boundings;
} else {
$gridBoundings = new ezcGraphBoundings($boundings->x0 + $renderer->xAxisSpace, $boundings->y0 + $renderer->yAxisSpace, $boundings->x1 - $renderer->xAxisSpace, $boundings->y1 - $renderer->yAxisSpace);
}
// Determine optimal angle if none specified
if ($this->angle === null) {
$minimumStepWidth = null;
foreach ($steps as $nr => $step) {
if ($minimumStepWidth === null || $step->width < $minimumStepWidth) {
$minimumStepWidth = $step->width;
}
}
$width = abs($axisBoundings->width * $minimumStepWidth * $this->direction->x + $axisBoundings->height * $minimumStepWidth * $this->direction->y);
$height = abs($renderer->yAxisSpace * $this->direction->x + $renderer->xAxisSpace * $this->direction->y);
$length = sqrt(pow($width, 2) + pow($height, 2));
$this->angle = rad2deg(acos($height / $length));
}
// Determine additional required axis space by boxes
$firstStep = reset($steps);
$lastStep = end($steps);
$textAngle = $axisAngle + deg2rad($this->angle) + ($axis->position & (ezcGraph::TOP | ezcGraph::BOTTOM) ? deg2rad(270) : deg2rad(90));
// Ensure angle between 0 and 360 degrees
$degTextAngle = rad2deg($textAngle);
while ($degTextAngle < 0) {
$degTextAngle += 360.0;
}
$this->offset = ($this->angle < 0 ? -1 : 1) * ($axis->position & (ezcGraph::TOP | ezcGraph::LEFT) ? 1 : -1) * (1 - cos(deg2rad($this->angle * 2)));
$axisSpaceFactor = abs(($this->direction->x == 0 ? 0 : $this->direction->x * $renderer->yAxisSpace / $axisBoundings->width) + ($this->direction->y == 0 ? 0 : $this->direction->y * $renderer->xAxisSpace / $axisBoundings->height));
$start = new ezcGraphCoordinate($start->x + max(0.0, $axisSpaceFactor * $this->offset) * ($end->x - $start->x), $start->y + max(0.0, $axisSpaceFactor * $this->offset) * ($end->y - $start->y));
$end = new ezcGraphCoordinate($end->x + min(0.0, $axisSpaceFactor * $this->offset) * ($end->x - $start->x), $end->y + min(0.0, $axisSpaceFactor * $this->offset) * ($end->y - $start->y));
$labelLength = sqrt(pow($renderer->xAxisSpace * $this->direction->y + $axisSpaceFactor * $this->offset * ($end->x - $start->x), 2) + pow($renderer->yAxisSpace * $this->direction->x + $axisSpaceFactor * $this->offset * ($end->y - $start->y), 2));
$this->offset *= $axisSpaceFactor;
// Draw steps and grid
foreach ($steps as $nr => $step) {
$position = new ezcGraphCoordinate($start->x + ($end->x - $start->x) * $step->position * abs($this->direction->x), $start->y + ($end->y - $start->y) * $step->position * abs($this->direction->y));
$stepSize = new ezcGraphCoordinate(($end->x - $start->x) * $step->width, ($end->y - $start->y) * $step->width);
// Calculate label boundings
switch (true) {
case $nr === 0:
$labelSize = min(abs($renderer->xAxisSpace * 2 * $this->direction->x + $renderer->yAxisSpace * 2 * $this->direction->y), abs($step->width * $axisBoundings->width * $this->direction->x + $step->width * $axisBoundings->height * $this->direction->y));
break;
case $step->isLast:
$labelSize = min(abs($renderer->xAxisSpace * 2 * $this->direction->x + $renderer->yAxisSpace * 2 * $this->direction->y), abs($steps[$nr - 1]->width * $axisBoundings->width * $this->direction->x + $steps[$nr - 1]->width * $axisBoundings->height * $this->direction->y));
break;
default:
$labelSize = min(abs($step->width * $axisBoundings->width * $this->direction->x + $step->width * $axisBoundings->height * $this->direction->y), abs($steps[$nr - 1]->width * $axisBoundings->width * $this->direction->x + $steps[$nr - 1]->width * $axisBoundings->height * $this->direction->y));
break;
}
$labelSize = $labelSize * cos(deg2rad($this->angle));
$lengthReducement = min(abs(tan(deg2rad($this->angle)) * ($labelSize / 2)), abs($labelLength / 2));
switch (true) {
case $degTextAngle >= 0 && $degTextAngle < 90 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 270 && $degTextAngle < 360 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x, $position->y, $position->x + abs($labelLength) - $lengthReducement, $position->y + $labelSize);
$labelAlignement = ezcGraph::LEFT | ezcGraph::TOP;
$labelRotation = $degTextAngle;
break;
case $degTextAngle >= 90 && $degTextAngle < 180 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 180 && $degTextAngle < 270 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x - abs($labelLength) + $lengthReducement, $position->y, $position->x, $position->y + $labelSize);
$labelAlignement = ezcGraph::RIGHT | ezcGraph::TOP;
$labelRotation = $degTextAngle - 180;
break;
case $degTextAngle >= 180 && $degTextAngle < 270 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 90 && $degTextAngle < 180 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x - abs($labelLength) + $lengthReducement, $position->y - $labelSize, $position->x, $position->y);
$labelAlignement = ezcGraph::RIGHT | ezcGraph::BOTTOM;
$labelRotation = $degTextAngle - 180;
break;
case $degTextAngle >= 270 && $degTextAngle < 360 && ($axis->position === ezcGraph::LEFT || $axis->position === ezcGraph::RIGHT) || $degTextAngle >= 0 && $degTextAngle < 90 && ($axis->position === ezcGraph::TOP || $axis->position === ezcGraph::BOTTOM):
$labelBoundings = new ezcGraphBoundings($position->x, $position->y + $labelSize, $position->x + abs($labelLength) - $lengthReducement, $position->y);
$labelAlignement = ezcGraph::LEFT | ezcGraph::BOTTOM;
$labelRotation = $degTextAngle;
break;
}
$renderer->drawText($labelBoundings, $step->label, $labelAlignement, new ezcGraphRotation($labelRotation, $position));
// major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// major step
$this->drawStep($renderer, $position, $this->direction, $axis->position, $this->majorStepSize, $axis->border);
}
}
/**
* 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)
{
// receive rendering parameters from axis
$steps = $axis->getSteps();
$this->steps = $steps;
$axisBoundings = new ezcGraphBoundings($start->x, $start->y, $end->x, $end->y);
// Determine normalized axis direction
$this->direction = new ezcGraphVector($start->x - $end->x, $start->y - $end->y);
$this->direction->unify();
if ($this->outerGrid) {
$gridBoundings = $boundings;
} else {
$gridBoundings = new ezcGraphBoundings($boundings->x0 + $renderer->xAxisSpace * abs($this->direction->y), $boundings->y0 + $renderer->yAxisSpace * abs($this->direction->x), $boundings->x1 - $renderer->xAxisSpace * abs($this->direction->y), $boundings->y1 - $renderer->yAxisSpace * abs($this->direction->x));
}
// 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 * $stepWidth);
if ($this->showLabels) {
// Calculate label boundings
switch (true) {
case abs($this->direction->x) > abs($this->direction->y) && $this->direction->x <= 0:
$labelBoundings = new ezcGraphBoundings($position->x - $stepSize->x + $this->labelPadding, $position->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y + $renderer->yAxisSpace - $this->labelPadding);
$alignement = ezcGraph::CENTER | ezcGraph::TOP;
break;
case abs($this->direction->x) > abs($this->direction->y) && $this->direction->x > 0:
$labelBoundings = new ezcGraphBoundings($position->x + $this->labelPadding, $position->y + $this->labelPadding, $position->x + $stepSize->x - $this->labelPadding, $position->y + $renderer->yAxisSpace - $this->labelPadding);
$alignement = ezcGraph::CENTER | ezcGraph::TOP;
break;
case $this->direction->y <= 0:
$labelBoundings = new ezcGraphBoundings($position->x - $renderer->xAxisSpace + $this->labelPadding, $position->y - $stepSize->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y - $this->labelPadding);
$alignement = ezcGraph::MIDDLE | ezcGraph::RIGHT;
break;
case $this->direction->y > 0:
$labelBoundings = new ezcGraphBoundings($position->x - $renderer->xAxisSpace + $this->labelPadding, $position->y + $this->labelPadding, $position->x - $this->labelPadding, $position->y + $stepSize->y - $this->labelPadding);
$alignement = ezcGraph::MIDDLE | ezcGraph::RIGHT;
break;
}
$renderer->drawText($labelBoundings, $step->label, $alignement);
}
// major grid
if ($axis->majorGrid) {
$this->drawGrid($renderer, $gridBoundings, $position, $stepSize, $axis->majorGrid);
}
// major step
$this->drawStep($renderer, $position, $this->direction, $axis->position, $this->majorStepSize, $axis->border);
}
}
