File Source for SC_GraphLine.php

<?php
/*
* This file is part of EC-CUBE
*
* Copyright(c) 2000-2011 LOCKON CO.,LTD. All Rights Reserved.
*
* http://www.lockon.co.jp/
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
$ownDir = realpath(dirname(__FILE__)) . '/';
require_once $ownDir . 'SC_GraphBase.php';
// 折れ線グラフ生成クラス
class SC_GraphLine extends SC_GraphBase{
var $area_width;
var $area_height;
var $ygrid_on;
var $graph_max; // グラフのエリア最大値(Y軸頂点の値)
var $arrXLabel;
var $XLabelAngle; // X軸ラベル角度
var $XTitle; // X軸タイトル
var $YTitle; // Y軸タイトル
var $arrDataList; // グラフデータを格納
var $arrPointList; // 折れ線座標を格納
var $line_max; // 複数の描画の場合に加算していく
var $x_margin;
var $y_margin;
// コンストラクタ
function SC_GraphLine(
$bgw = BG_WIDTH, $bgh = BG_HEIGHT, $left = LINE_LEFT, $top = LINE_TOP,
$area_width = LINE_AREA_WIDTH, $area_height = LINE_AREA_HEIGHT) {
parent::SC_GraphBase($bgw, $bgh, $left, $top);
$this->area_width = $area_width;
$this->area_height = $area_height;
$this->ygrid_on = true;
$this->line_max = 0;
$this->graph_max = 0;
$this->XLabelAngle = 0;
$this->x_margin = 0;
$this->y_margin = 0;
}
// X軸ラベルの角度セット
function setXLabelAngle($Angle) {
$this->XLabelAngle = $Angle;
}
// Y軸タイトル
function drawYTitle() {
// Y軸にタイトルを入れる
if($this->YTitle != "") {
$text_width = $this->getTextWidth($this->YTitle, FONT_SIZE);
$x_pos = $this->left - ($text_width / 2);
$y_pos = $this->top - FONT_SIZE - LINE_YTITLE_PAD;
$this->setText(FONT_SIZE, $x_pos, $y_pos, $this->YTitle);
}
}
// X軸タイトル
function drawXTitle() {
// Y軸にタイトルを入れる
if($this->XTitle != "") {
$text_width = $this->getTextWidth($this->XTitle, FONT_SIZE);
$x_pos = $this->left + $this->area_width - ($text_width / 2) + 30;
$y_pos = $this->top + $this->area_height + LINE_XTITLE_PAD;
$this->setText(FONT_SIZE, $x_pos, $y_pos, $this->XTitle);
}
}
// Y軸の描画
function drawYLine() {
imageline($this->image, $this->left, $this->top, $this->left, $this->top + $this->area_height, $this->flame_color);
// 目盛り幅を求める(中間点は自動)
$size = $this->area_height / (LINE_Y_SCALE * 2);
// 上から目盛りを入れていく
$pos = 0;
for($i = 0; $i < (LINE_Y_SCALE * 2); $i++) {
// 目盛り幅
if(($i % 2) == 0) {
$sw = LINE_SCALE_SIZE;
if($this->ygrid_on) {
imageline($this->image, $this->left, $this->top + $pos, $this->left + $this->area_width, $this->top + $pos, $this->grid_color);
}
} else {
$sw = LINE_SCALE_SIZE / 2;
}
imageline($this->image, $this->left, $this->top + $pos, $this->left + $sw, $this->top + $pos, $this->flame_color);
$pos += $size;
}
// Y軸に目盛り値を入れる
$this->setYScale();
$this->drawYTitle();
}
// X軸の描画
function drawXLine($bar = false) {
imageline($this->image, $this->left, $this->top + $this->area_height, $this->left + $this->area_width, $this->top + $this->area_height, $this->flame_color);
$arrPointList = $this->arrPointList[0];
$count = count($arrPointList);
// 棒グラフの場合は半目盛りずらす
if($bar) {
$half_scale = intval($this->area_width / ($count + 1) / 2);
} else {
$half_scale = 0;
}
// ラベルの表示インターバルを算出
$interval = ceil($count / LINE_XLABEL_MAX); // 切り上げ
for($i = 0; $i < $count; $i++) {
// X軸に目盛りを入れる
$x = $arrPointList[$i][0];
$pos = $this->top + $this->area_height;
imageline($this->image, $x - $half_scale, $pos, $x - $half_scale, $pos - LINE_SCALE_SIZE, $this->flame_color);
// ラベルを入れる
if(($i % $interval) == 0) {
$text_width = $this->getTextWidth($this->arrXLabel[$i], FONT_SIZE);
$x_pos = $x;
if ($bar) {
$bar_margin = -15;
} else {
$bar_margin = 0;
}
$this->setText(FONT_SIZE, $x_pos + $this->x_margin + $bar_margin, $pos + FONT_SIZE + $this->y_margin, $this->arrXLabel[$i], NULL, $this->XLabelAngle);
}
}
// 棒グラフの場合は最後の目盛りを一つ追加する
if($bar) {
imageline($this->image, $x + $half_scale, $pos, $x + $half_scale, $pos - LINE_SCALE_SIZE, $this->flame_color);
}
$this->drawXTitle();
}
// グリッド表示
function setYGridOn($ygrid_on) {
$this->ygrid_on = $ygrid_on;
}
// ポイントの描画
function setMark($line_no, $left, $top, $size = LINE_MARK_SIZE) {
// 偶数に変換しておく
$size += $size % 2;
$array = array(
$left, $top - ($size / 2),
$left + ($size / 2), $top,
$left, $top + ($size / 2),
$left - ($size / 2), $top,
);
imagefilledpolygon($this->image, $array, 4, $this->arrColor[$line_no]);
imagepolygon($this->image, $array, 4, $this->flame_color);
imagesetpixel ($this->image, $left, $top + ($size / 2), $this->flame_color);
}
// Y軸目盛りに値を入れる
function setYScale() {
// 1目盛りの値
$number = intval($this->graph_max / LINE_Y_SCALE);
// 目盛り幅を求める
$size = $this->area_height / LINE_Y_SCALE;
$pos = 0;
for($i = 0; $i <= LINE_Y_SCALE; $i++) {
$snumber = $number * (LINE_Y_SCALE - $i);
$disp_number = number_format($snumber);
$num_width = $this->getTextWidth($disp_number, FONT_SIZE);
$this->setText(FONT_SIZE, $this->left - $num_width - 2, $this->top + $pos - (FONT_SIZE / 2), $disp_number);
$pos += $size;
}
}
//
function setMax($arrData) {
// データの最大値を取得する。
$data_max = max($arrData);
// 10の何倍かを取得
$figure = strlen($data_max) - 1;
// 次の桁を計算する
$tenval = pow(10, $figure);
// グラフ上での最大値を求める
$this->graph_max = $tenval * (intval($data_max / $tenval) + 1);
// 最大値が10未満の場合の対応
if($this->graph_max < 10) {
$this->graph_max = 10;
}
}
// グラフの描画
function drawGraph() {
// グラフ背景を描画
$this->drawYLine();
$this->drawXLine();
// 折れ線グラフ描画
for($i = 0; $i < $this->line_max; $i++) {
$this->drawLine($i);
}
// マークを描画
for($i = 0; $i < $this->line_max; $i++) {
$this->drawMark($i);
}
// ラベルを描画
for($i = 0; $i < $this->line_max; $i++) {
$this->drawLabel($i);
}
// 凡例の描画
$this->drawLegend();
}
// ラインを描画する
function drawLine($line_no) {
$arrPointList = $this->arrPointList[$line_no];
$count = count($arrPointList);
for($i = 0; $i < $count; $i++) {
$x = $arrPointList[$i][0];
$y = $arrPointList[$i][1];
if(isset($arrPointList[$i + 1])) {
$next_x = $arrPointList[$i + 1][0];
$next_y = $arrPointList[$i + 1][1];
imageline($this->image, $x, $y, $next_x, $next_y, $this->arrColor[$line_no]);
}
}
}
// マークを描画する
function drawMark($line_no) {
$arrPointList = $this->arrPointList[$line_no];
$count = count($arrPointList);
for($i = 0; $i < $count; $i++) {
$x = $arrPointList[$i][0];
$y = $arrPointList[$i][1];
$this->setMark($line_no, $x, $y);
}
}
// ラベルを描画する
function drawLabel($line_no) {
$arrData = $this->arrDataList[$line_no];
$arrPointList = $this->arrPointList[$line_no];
$count = count($arrPointList);
for($i = 0; $i < $count; $i++) {
$x = $arrPointList[$i][0];
$y = $arrPointList[$i][1];
$text_width = $this->getTextWidth(number_format($arrData[$i]), FONT_SIZE);
$y_pos = $y - FONT_SIZE - 5;
$x_pos = $x - $text_width / 2;
$this->setText(FONT_SIZE, $x_pos, $y_pos, number_format($arrData[$i]));
}
}
// データをセットする
function setData($arrData) {
$this->arrDataList[$this->line_max] = array_values((array)$arrData);
$this->setMax($this->arrDataList[$this->line_max]);
// 値の描画変換率
$rate = $this->area_height / $this->graph_max;
// 描画率を計算
$count = count($this->arrDataList[$this->line_max]);
$scale_width = $this->area_width / ($count + 1);
$this->arrPointList[$this->line_max] = array();
for($i = 0; $i < $count; $i++) {
// X座標を求める
$x = intval($this->left + ($scale_width * ($i + 1)));
// Y座標を求める
$y = intval($this->top + $this->area_height - ($this->arrDataList[$this->line_max][$i] * $rate));
// XY座標を保存する
$this->arrPointList[$this->line_max][] = array($x, $y);
}
$this->line_max++;
}
// X軸ラベルをセットする
function setXLabel($arrXLabel) {
$this->arrXLabel = array_values((array)$arrXLabel);
}
// X軸タイトルをセットする
function setXTitle($title) {
$this->XTitle = $title;
}
// Y軸タイトルをセットする
function setYTitle($title) {
$this->YTitle = $title;
}
}
?>

Source for file SC_GraphLine.php