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Diffstat (limited to 'boca-1.5.0/src/libchart/classes/BarChart.php')
| -rw-r--r-- | boca-1.5.0/src/libchart/classes/BarChart.php | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/boca-1.5.0/src/libchart/classes/BarChart.php b/boca-1.5.0/src/libchart/classes/BarChart.php new file mode 100644 index 0000000..5b658ca --- /dev/null +++ b/boca-1.5.0/src/libchart/classes/BarChart.php @@ -0,0 +1,172 @@ +<?php + /** Libchart - PHP chart library + * + * Copyright (C) 2005-2006 Jean-Marc Trémeaux (jm.tremeaux at gmail.com) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + + /** + * Base bar chart class (horizontal or vertical) + * + * @author Jean-Marc Trémeaux (jm.tremeaux at gmail.com) + * @abstract + */ + + class BarChart extends Chart + { + /** + * Creates a new bar chart + * + * @access protected + * @param integer width of the image + * @param integer height of the image + */ + + function BarChart($width, $height) + { + parent::Chart($width, $height); + + $this->setMargin(5); + $this->setLowerBound(0); + } + + /** + * Compute the boundaries on the axis + * + * @access protected + */ + + function computeBound() + { + // Compute lower and upper bound on the value axis + + $point = current($this->point); + + // Check if some points were defined + + if(!$point) + { + $yMin = 0; + $yMax = 1; + } + else + { + $yMax = $yMin = $point->getY(); + + foreach($this->point as $point) + { + $y = $point->getY(); + + if($y < $yMin) + $yMin = $y; + + if($y > $yMax) + $yMax = $y; + } + } + + $this->yMinValue = isset($this->lowerBound) ? $this->lowerBound : $yMin; + $this->yMaxValue = isset($this->upperBound) ? $this->upperBound : $yMax; + + // Compute boundaries on the sample axis + + $this->sampleCount = count($this->point); + } + + /** + * Set manually the lower boundary value (overrides the automatic formatting) + * Typical usage is to set the bars starting from zero + * + * @access public + * @param double lower boundary value + */ + + function setLowerBound($lowerBound) + { + $this->lowerBound = $lowerBound; + } + + /** + * Set manually the upper boundary value (overrides the automatic formatting) + * + * @access public + * @param double upper boundary value + */ + + function setUpperBound($upperBound) + { + $this->upperBound = $upperBound; + } + + /** + * Compute the image layout + * + * @access protected + */ + + function computeLabelMargin() + { + $this->axis = new Axis($this->yMinValue, $this->yMaxValue); + $this->axis->computeBoundaries(); + + $this->graphTLX = $this->margin + $this->labelMarginLeft; + $this->graphTLY = $this->margin + $this->labelMarginTop; + $this->graphBRX = $this->width - $this->margin - $this->labelMarginRight; + $this->graphBRY = $this->height - $this->margin - $this->labelMarginBottom; + } + + /** + * Create the image + * + * @access protected + */ + + function createImage() + { + parent::createImage(); + + $this->axisColor1 = new Color(201, 201, 201); + $this->axisColor2 = new Color(158, 158, 158); + + $this->aquaColor1 = new Color(242, 242, 242); + $this->aquaColor2 = new Color(231, 231, 231); + $this->aquaColor3 = new Color(239, 239, 239); + $this->aquaColor4 = new Color(253, 253, 253); + + $this->barColor1 = new Color(42, 71, 181); + $this->barColor2 = new Color(33, 56, 143); + + $this->barColor3 = new Color(172, 172, 210); + $this->barColor4 = new Color(117, 117, 143); + + // Aqua-like background + + $aquaColor = Array($this->aquaColor1, $this->aquaColor2, $this->aquaColor3, $this->aquaColor4); + + for($i = $this->graphTLY; $i < $this->graphBRY; $i++) + { + $color = $aquaColor[($i + 3) % 4]; + $this->primitive->line($this->graphTLX, $i, $this->graphBRX, $i, $color); + } + + // Axis + + imagerectangle($this->img, $this->graphTLX - 1, $this->graphTLY, $this->graphTLX, $this->graphBRY, $this->axisColor1->getColor($this->img)); + imagerectangle($this->img, $this->graphTLX - 1, $this->graphBRY, $this->graphBRX, $this->graphBRY + 1, $this->axisColor1->getColor($this->img)); + } + } +?> |