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07c3cdd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | <?php
/* Libchart - PHP chart library
* Copyright (C) 2005-2007 Jean-Marc Tr�meaux (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/>.
*
*/
/**
* Line chart.
*
* @author Jean-Marc Tr�meaux (jm.tremeaux at gmail.com)
*/
class LineChart extends BarChart {
/**
* Creates a new line chart.
* Line charts allow for XYDataSet and XYSeriesDataSet in order to plot several lines.
*
* @param integer width of the image
* @param integer height of the image
*/
public function LineChart($width = 600, $height = 250) {
parent::BarChart($width, $height);
//$this->plot->setGraphPadding(new Padding(5, 30, 50, 50));
$this->plot->setGraphPadding(new Padding(-10, 5, 50, 40));
}
/**
* Computes the layout.
*/
protected function computeLayout() {
if ($this->hasSeveralSerie) {
$this->plot->setHasCaption(true);
}
$this->plot->computeLayout();
}
/**
* Print the axis.
*/
protected function printAxis() {
$minValue = $this->axis->getLowerBoundary();
$maxValue = $this->axis->getUpperBoundary();
$stepValue = $this->axis->getTics();
// Get graphical obects
$img = $this->plot->getImg();
$palette = $this->plot->getPalette();
$text = $this->plot->getText();
// Get the graph area
$graphArea = $this->plot->getGraphArea();
// Vertical axis
for ($value = $minValue; $value <= $maxValue; $value += $stepValue) {
$y = $graphArea->y2 - ($value - $minValue) * ($graphArea->y2 - $graphArea->y1) / ($this->axis->displayDelta);
imagerectangle($img, $graphArea->x1 - 3, $y, $graphArea->x1 - 2, $y + 1, $palette->axisColor[0]->getColor($img));
imagerectangle($img, $graphArea->x1 - 1, $y, $graphArea->x1, $y + 1, $palette->axisColor[1]->getColor($img));
$text->printText($img, $graphArea->x1 - 5, $y, $this->plot->getTextColor(), $value, $text->fontCondensed, $text->HORIZONTAL_RIGHT_ALIGN | $text->VERTICAL_CENTER_ALIGN);
}
// Get first serie of a list
$pointList = $this->getFirstSerieOfList();
// Horizontal Axis
$pointCount = count($pointList);
reset($pointList);
$columnWidth = ($graphArea->x2 - $graphArea->x1) / ($pointCount - 1);
for ($i = 0; $i < $pointCount; $i++) {
$x = $graphArea->x1 + $i * $columnWidth;
imagerectangle($img, $x - 1, $graphArea->y2 + 2, $x, $graphArea->y2 + 3, $palette->axisColor[0]->getColor($img));
imagerectangle($img, $x - 1, $graphArea->y2, $x, $graphArea->y2 + 1, $palette->axisColor[1]->getColor($img));
$point = current($pointList);
next($pointList);
$label = $point->getX();
$text->printDiagonal($img, $x - 5, $graphArea->y2 + 10, $this->plot->getTextColor(), $label);
}
}
/**
* Print the lines.
*/
protected function printLine() {
$minValue = $this->axis->getLowerBoundary();
$maxValue = $this->axis->getUpperBoundary();
// Get the data as a list of series for consistency
$serieList = $this->getDataAsSerieList();
// Get graphical obects
$img = $this->plot->getImg();
$palette = $this->plot->getPalette();
$text = $this->plot->getText();
$primitive = $this->plot->getPrimitive();
// Get the graph area
$graphArea = $this->plot->getGraphArea();
$lineColorSet = $palette->lineColorSet;
$lineColorSet->reset();
for ($j = 0; $j < count($serieList); $j++) {
$serie = $serieList[$j];
$pointList = $serie->getPointList();
$pointCount = count($pointList);
reset($pointList);
$columnWidth = ($graphArea->x2 - $graphArea->x1) / ($pointCount - 1);
$lineColor = $lineColorSet->currentColor();
$lineColorShadow = $lineColorSet->currentShadowColor();
$lineColorSet->next();
$x1 = null;
$y1 = null;
for ($i = 0; $i < $pointCount; $i++) {
$x2 = $graphArea->x1 + $i * $columnWidth;
$point = current($pointList);
next($pointList);
$value = $point->getY();
$y2 = $graphArea->y2 - ($value - $minValue) * ($graphArea->y2 - $graphArea->y1) / ($this->axis->displayDelta);
// Draw line
if ($x1) {
$primitive->line($x1, $y1, $x2, $y2, $lineColor, 4);
$primitive->line($x1, $y1 - 1, $x2, $y2 - 1, $lineColorShadow, 2);
}
$x1 = $x2;
$y1 = $y2;
}
}
}
/**
* Renders the caption.
*/
protected function printCaption() {
// Get the list of labels
$labelList = $this->dataSet->getTitleList();
// Create the caption
$caption = new Caption();
$caption->setPlot($this->plot);
$caption->setLabelList($labelList);
$palette = $this->plot->getPalette();
$lineColorSet = $palette->lineColorSet;
$caption->setColorSet($lineColorSet);
// Render the caption
$caption->render();
}
/**
* Render the chart image.
*
* @param string name of the file to render the image to (optional)
*/
public function render($fileName = null) {
// Check the data model
$this->checkDataModel();
$this->bound->computeBound($this->dataSet);
$this->computeAxis();
$this->computeLayout();
$this->createImage();
//$this->plot->printLogo();
//$this->plot->printTitle();
if (!$this->isEmptyDataSet(2)) {
$this->printAxis();
$this->printLine();
if ($this->hasSeveralSerie) {
$this->printCaption();
}
}
$this->plot->render($fileName);
}
}
?> |