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<?php |
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/** |
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* Copyright (C) 2019 Graham Breach |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/** |
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* For more information, please contact <graham@goat1000.com> |
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*/ |
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|
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namespace Goat1000\SVGGraph; |
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|
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trait FloatingBarTrait { |
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|
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private $min_value = null; |
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private $max_value = null; |
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|
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/** |
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* Returns an array with x, y, width and height set |
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*/ |
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protected function barDimensions($item, $index, $start, $axis, $dataset) |
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{ |
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$bar = []; |
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$bar_x = $this->barX($item, $index, $bar, $axis, $dataset); |
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if($bar_x === null) |
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return []; |
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|
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$start = $item->value; |
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$value = $item->end - $start; |
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$y_pos = $this->barY($value, $bar, $start, $axis); |
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if($y_pos === null) |
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return []; |
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return $bar; |
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} |
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|
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/** |
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* Override to replace value |
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*/ |
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protected function setTooltip(&$element, &$item, $dataset, $key, $value = null, |
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$duplicate = false) |
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{ |
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$value = $item->end - $item->value; |
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return parent::setTooltip($element, $item, $dataset, $key, $value, $duplicate); |
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} |
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|
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/** |
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* Returns the maximum bar end |
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*/ |
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public function getMaxValue() |
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{ |
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if($this->max_value !== null) |
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return $this->max_value; |
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$max = null; |
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foreach($this->values[0] as $item) { |
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$s = $item->value; |
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$e = $item->end; |
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if($s === null || $e === null) |
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continue; |
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$m = max($s, $e); |
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if($max === null || $m > $max) |
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$max = $m; |
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} |
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return ($this->max_value = $max); |
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} |
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|
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/** |
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* Returns the minimum bar end |
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*/ |
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public function getMinValue() |
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{ |
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if($this->min_value !== null) |
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return $this->min_value; |
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$min = null; |
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foreach($this->values[0] as $item) { |
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$s = $item->value; |
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$e = $item->end; |
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if($s === null || $e === null) |
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continue; |
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$m = min($s, $e); |
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if($min === null || $m < $min) |
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$min = $m; |
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} |
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return ($this->min_value = $min); |
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} |
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|
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/** |
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* Returns TRUE if the item is visible on the graph |
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*/ |
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public function isVisible($item, $dataset = 0) |
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{ |
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if($item->value === null || $item->end === null) |
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return false; |
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return ($item->end - $item->value != 0); |
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} |
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|
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} |
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|
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|
