/src/old/solution2012/libchart/libchart/classes/view/chart/PieChart.php
PHP | 266 lines | 133 code | 47 blank | 86 comment | 9 complexity | 8e0c24fc09830d2532d6233f6f235b97 MD5 | raw file
- <?php
- /* Libchart - PHP chart library
- * Copyright (C) 2005-2011 Jean-Marc Tr?eaux (jm.tremeaux at gmail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
- /**
- * Pie chart.
- *
- * @author Jean-Marc Tr?eaux (jm.tremeaux at gmail.com)
- */
- class PieChart extends Chart {
- protected $pieCenterX;
- protected $pieCenterY;
-
- /**
- * Constructor of a pie chart.
- *
- * @param integer width of the image
- * @param integer height of the image
- */
- public function PieChart($width = 600, $height = 250) {
- parent::Chart($width, $height);
- $this->plot->setGraphPadding(new Padding(15, 10, 30, 30));
- }
- /**
- * Computes the layout.
- */
- protected function computeLayout() {
- $this->plot->setHasCaption(true);
- $this->plot->computeLayout();
-
- // Get the graph area
- $graphArea = $this->plot->getGraphArea();
- // Compute the coordinates of the pie
- $this->pieCenterX = $graphArea->x1 + ($graphArea->x2 - $graphArea->x1) / 2;
- $this->pieCenterY = $graphArea->y1 + ($graphArea->y2 - $graphArea->y1) / 2;
- $this->pieWidth = round(($graphArea->x2 - $graphArea->x1) * 4 / 5);
- $this->pieHeight = round(($graphArea->y2 - $graphArea->y1) * 3.7 / 5);
- $this->pieDepth = round($this->pieWidth * 0.05);
- }
-
- /**
- * Compare two sampling point values, order from biggest to lowest value.
- *
- * @param double first value
- * @param double second value
- * @return integer result of the comparison
- */
- protected function sortPie($v1, $v2) {
- return $v1[0] == $v2[0] ? 0 :
- $v1[0] > $v2[0] ? -1 :
- 1;
- }
-
- /**
- * Compute pie values in percentage and sort them.
- */
- protected function computePercent() {
- $this->total = 0;
- $this->percent = array();
- $pointList = $this->dataSet->getPointList();
- foreach ($pointList as $point) {
- $this->total += $point->getY();
- }
- foreach ($pointList as $point) {
- $percent = $this->total == 0 ? 0 : 100 * $point->getY() / $this->total;
- array_push($this->percent, array($percent, $point));
- }
- // Sort data points
- if ($this->config->getSortDataPoint()) {
- //usort($this->percent, array("PieChart", "sortPie"));
- }
- }
- /**
- * Creates the pie chart image.
- */
- protected function createImage() {
- parent::createImage();
- // Get graphical obects
- $img = $this->plot->getImg();
- $palette = $this->plot->getPalette();
- $primitive = $this->plot->getPrimitive();
-
- // Get the graph area
- $graphArea = $this->plot->getGraphArea();
- // Legend box
- $primitive->outlinedBox($graphArea->x1, $graphArea->y1, $graphArea->x2, $graphArea->y2, $palette->axisColor[0], $palette->axisColor[1]);
- // Aqua-like background
- for ($i = $graphArea->y1 + 2; $i < $graphArea->y2 - 1; $i++) {
- $color = $palette->backgroundColor[($i + 3) % 4];
- $primitive->line($graphArea->x1 + 2, $i, $graphArea->x2 - 2, $i, $color);
- }
- }
- /**
- * Renders the caption.
- */
- protected function printCaption() {
- // Create a list of labels
- $labelList = array();
- foreach($this->percent as $percent) {
- list($percent, $point) = $percent;
- $label = $point->getX();
-
- array_push($labelList, $label);
- }
-
- // Create the caption
- $caption = new Caption();
- $caption->setPlot($this->plot);
- $caption->setLabelList($labelList);
-
- $palette = $this->plot->getPalette();
- $pieColorSet = $palette->pieColorSet;
- $caption->setColorSet($pieColorSet);
- // Render the caption
- $caption->render();
- }
- /**
- * Draw a 2D disc.
- *
- * @param integer Center coordinate (y)
- * @param array Colors for each portion
- * @param bitfield Drawing mode
- */
- protected function drawDisc($cy, $colorArray, $mode) {
- // Get graphical obects
- $img = $this->plot->getImg();
- $i = 0;
- $oldAngle = 0;
- $percentTotal = 0;
- foreach ($this->percent as $a) {
- list ($percent, $point) = $a;
- // If value is null, don't draw this arc
- if ($percent <= 0) {
- continue;
- }
-
- $color = $colorArray[$i % count($colorArray)];
- $percentTotal += $percent;
- $newAngle = $percentTotal * 360 / 100;
- // imagefilledarc doesn't like null values (#1)
- if ($newAngle - $oldAngle >= 1) {
- imagefilledarc($img, $this->pieCenterX, $cy, $this->pieWidth, $this->pieHeight, $oldAngle, $newAngle, $color->getColor($img), $mode);
- }
- $oldAngle = $newAngle;
- $i++;
- }
- }
- /**
- * Print the percentage text.
- */
- protected function drawPercent() {
- // Get graphical obects
- $img = $this->plot->getImg();
- $palette = $this->plot->getPalette();
- $text = $this->plot->getText();
- $primitive = $this->plot->getPrimitive();
-
- $angle1 = 0;
- $percentTotal = 0;
- foreach ($this->percent as $a) {
- list ($percent, $point) = $a;
- // If value is null, the arc isn't drawn, no need to display percent
- if ($percent <= 0) {
- continue;
- }
- $percentTotal += $percent;
- $angle2 = $percentTotal * 2 * M_PI / 100;
- $angle = $angle1 + ($angle2 - $angle1) / 2;
- $label = number_format($percent) . "%";
- $x = cos($angle) * ($this->pieWidth + 35) / 2 + $this->pieCenterX;
- $y = sin($angle) * ($this->pieHeight + 35) / 2 + $this->pieCenterY;
- $text->printText($img, $x, $y, $this->plot->getTextColor(), $label, $text->fontCondensed, $text->HORIZONTAL_CENTER_ALIGN | $text->VERTICAL_CENTER_ALIGN);
- $angle1 = $angle2;
- }
- }
- /**
- * Print the pie chart.
- */
- protected function printPie() {
- // Get graphical obects
- $img = $this->plot->getImg();
- $palette = $this->plot->getPalette();
- $text = $this->plot->getText();
- $primitive = $this->plot->getPrimitive();
- // Get the pie color set
- $pieColorSet = $palette->pieColorSet;
- $pieColorSet->reset();
- // Silhouette
- for ($cy = $this->pieCenterY + $this->pieDepth / 2; $cy >= $this->pieCenterY - $this->pieDepth / 2; $cy--) {
- $this->drawDisc($cy, $palette->pieColorSet->shadowColorList, IMG_ARC_EDGED);
- }
- // Top
- $this->drawDisc($this->pieCenterY - $this->pieDepth / 2, $palette->pieColorSet->colorList, IMG_ARC_PIE);
- // Top Outline
- if ($this->config->getShowPointCaption()) {
- $this->drawPercent();
- }
- }
- /**
- * Render the chart image.
- *
- * @param string name of the file to render the image to (optional)
- */
- public function render($fileName = null) {
- $this->computePercent();
- $this->computeLayout();
- $this->createImage();
- $this->plot->printLogo();
- $this->plot->printTitle();
- $this->printPie();
- $this->printCaption();
- $this->plot->render($fileName);
- }
- }
- ?>