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<?php |
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/** |
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* Copyright (C) 2020-2022 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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/** |
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* Class for related stroke and fill colours |
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*/ |
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class ColourGroup { |
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private $stroke; |
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|
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public function __construct(&$graph, $item, $key, $dataset, |
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$stroke_opt = 'stroke_colour', $fill = null, $item_opt = null, |
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$stroke_opt_is_colour = false) |
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{ |
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$stroke = $stroke_opt_is_colour ? $stroke_opt : |
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$graph->getItemOption($stroke_opt, $dataset, $item, $item_opt); |
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if(is_array($stroke)) { |
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$this->stroke = new Colour($graph, $stroke); |
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return; |
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} |
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|
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list ($stroke_colour, $opacity, $filters) = $this->colourParts($stroke); |
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|
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// not a fill colour? |
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if($stroke_colour !== 'fill' && $stroke_colour !== 'fillColour') { |
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$this->stroke = new Colour($graph, $stroke); |
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return; |
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} |
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|
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$allow_grad_pat = ($stroke_colour === 'fill'); |
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|
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if($fill !== null) { |
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$stroke_colour = new Colour($graph, $fill, $allow_grad_pat, $allow_grad_pat); |
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} else { |
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$stroke_colour = $graph->getColour($item, $key, $dataset, $allow_grad_pat, |
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$allow_grad_pat); |
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} |
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|
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if($stroke_colour->isNone()) |
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$stroke_colour = new Colour($graph, 'black'); |
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|
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$not_solid = $stroke_colour->isGradient() || $stroke_colour->isPattern(); |
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|
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// if there are no modifications to make, we're done |
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if($not_solid || ($opacity >= 1 && $filters == '')) { |
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$this->stroke = $stroke_colour; |
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return; |
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} |
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|
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$stroke = $stroke_colour->solid(); |
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if($opacity < 1) |
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$stroke .= ':' . $opacity; |
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if($filters != '') |
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$stroke .= '/' . $filters; |
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|
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$this->stroke = new Colour($graph, $stroke); |
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} |
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|
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/** |
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* Splits a colour into parts |
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*/ |
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private static function colourParts($colour) |
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{ |
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$opacity = 1; |
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$filters = ''; |
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|
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if(!empty($colour)) { |
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// get opacity / filters |
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$spos = strpos($colour, '/'); |
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if($spos !== false) { |
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$filters = substr($colour, $spos + 1); |
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$colour = substr($colour, 0, $spos); |
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} |
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|
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$spos = strpos($colour, ':'); |
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if($spos !== false) { |
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$opacity = substr($colour, $spos + 1); |
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$colour = substr($colour, 0, $spos); |
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} |
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} |
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|
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return [$colour, $opacity, $filters]; |
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} |
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|
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public function stroke() |
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{ |
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return $this->stroke; |
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} |
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} |
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|
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