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<?php
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/**
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* Graph Class. PHP Class to draw line, point, bar, and area graphs, including numeric x-axis and double y-axis.
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* Version: 1.6.3
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* Copyright (C) 2000 Herman Veluwenkamp
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* 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
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Copy of GNU Lesser General Public License at: http://www.gnu.org/copyleft/lesser.txt
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* Contact author at: hermanV@mindless.com
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*
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* @package core
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* @subpackage lib
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*/
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declare(strict_types=1);
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defined('MOODLE_INTERNAL') || die();
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/* This file contains modifications by Martin Dougiamas
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* as part of Moodle (http://moodle.com). Modified lines
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* are marked with "Moodle".
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*/
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/**
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* @package moodlecore
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*/
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class graph {
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var $image;
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var $debug = FALSE; // be careful!!
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var $calculated = array(); // array of computed values for chart
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var $parameter = array( // input parameters
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'width' => 320, // default width of image
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'height' => 240, // default height of image
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'file_name' => 'none', // name of file for file to be saved as.
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// NOTE: no suffix required. this is determined from output_format below.
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'output_format' => 'PNG', // image output format. 'GIF', 'PNG', 'JPEG'. default 'PNG'.
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'seconds_to_live' => 0, // expiry time in seconds (for HTTP header)
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'hours_to_live' => 0, // expiry time in hours (for HTTP header)
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'path_to_fonts' => 'fonts/', // path to fonts folder. don't forget *trailing* slash!!
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// for WINDOZE this may need to be the full path, not relative.
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'title' => 'Graph Title', // text for graph title
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'title_font' => 'default.ttf', // title text font. don't forget to set 'path_to_fonts' above.
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'title_size' => 16, // title text point size
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'title_colour' => 'black', // colour for title text
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'x_label' => '', // if this is set then this text is printed on bottom axis of graph.
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'y_label_left' => '', // if this is set then this text is printed on left axis of graph.
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'y_label_right' => '', // if this is set then this text is printed on right axis of graph.
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'label_size' => 8, // label text point size
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'label_font' => 'default.ttf', // label text font. don't forget to set 'path_to_fonts' above.
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'label_colour' => 'gray33', // label text colour
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'y_label_angle' => 90, // rotation of y axis label
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'x_label_angle' => 90, // rotation of y axis label
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'outer_padding' => 5, // padding around outer text. i.e. title, y label, and x label.
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'inner_padding' => 0, // padding beteen axis text and graph.
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'x_inner_padding' => 5, // padding beteen axis text and graph.
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'y_inner_padding' => 6, // padding beteen axis text and graph.
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'outer_border' => 'none', // colour of border aound image, or 'none'.
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'inner_border' => 'black', // colour of border around actual graph, or 'none'.
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'inner_border_type' => 'box', // 'box' for all four sides, 'axis' for x/y axis only,
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// 'y' or 'y-left' for y axis only, 'y-right' for right y axis only,
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// 'x' for x axis only, 'u' for both left and right y axis and x axis.
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'outer_background' => 'none', // background colour of entire image.
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'inner_background' => 'none', // background colour of plot area.
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'y_min_left' => 0, // this will be reset to minimum value if there is a value lower than this.
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'y_max_left' => 0, // this will be reset to maximum value if there is a value higher than this.
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'y_min_right' => 0, // this will be reset to minimum value if there is a value lower than this.
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'y_max_right' => 0, // this will be reset to maximum value if there is a value higher than this.
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'x_min' => 0, // only used if x axis is numeric.
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'x_max' => 0, // only used if x axis is numeric.
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'y_resolution_left' => 1, // scaling for rounding of y axis max value.
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// if max y value is 8645 then
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// if y_resolution is 0, then y_max becomes 9000.
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// if y_resolution is 1, then y_max becomes 8700.
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// if y_resolution is 2, then y_max becomes 8650.
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// if y_resolution is 3, then y_max becomes 8645.
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// get it?
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'y_decimal_left' => 0, // number of decimal places for y_axis text.
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'y_resolution_right' => 2, // ... same for right hand side
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'y_decimal_right' => 0, // ... same for right hand side
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'x_resolution' => 2, // only used if x axis is numeric.
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'x_decimal' => 0, // only used if x axis is numeric.
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'point_size' => 4, // default point size. use even number for diamond or triangle to get nice look.
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'brush_size' => 4, // default brush size for brush line.
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'brush_type' => 'circle', // type of brush to use to draw line. choose from the following
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// 'circle', 'square', 'horizontal', 'vertical', 'slash', 'backslash'
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'bar_size' => 0.8, // size of bar to draw. <1 bars won't touch
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// 1 is full width - i.e. bars will touch.
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// >1 means bars will overlap.
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'bar_spacing' => 10, // space in pixels between group of bars for each x value.
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'shadow_offset' => 3, // draw shadow at this offset, unless overidden by data parameter.
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'shadow' => 'grayCC', // 'none' or colour of shadow.
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'shadow_below_axis' => true, // whether to draw shadows of bars and areas below the x/zero axis.
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'x_axis_gridlines' => 'auto', // if set to a number then x axis is treated as numeric.
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'y_axis_gridlines' => 6, // number of gridlines on y axis.
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'zero_axis' => 'none', // colour to draw zero-axis, or 'none'.
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'axis_font' => 'default.ttf', // axis text font. don't forget to set 'path_to_fonts' above.
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'axis_size' => 8, // axis text font size in points
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'axis_colour' => 'gray33', // colour of axis text.
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'y_axis_angle' => 0, // rotation of axis text.
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'x_axis_angle' => 0, // rotation of axis text.
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'y_axis_text_left' => 1, // whether to print left hand y axis text. if 0 no text, if 1 all ticks have text,
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'x_axis_text' => 1, // if 4 then print every 4th tick and text, etc...
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'y_axis_text_right' => 0, // behaviour same as above for right hand y axis.
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'x_offset' => 0.5, // x axis tick offset from y axis as fraction of tick spacing.
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'y_ticks_colour' => 'black', // colour to draw y ticks, or 'none'
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'x_ticks_colour' => 'black', // colour to draw x ticks, or 'none'
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'y_grid' => 'line', // grid lines. set to 'line' or 'dash'...
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'x_grid' => 'line', // or if set to 'none' print nothing.
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'grid_colour' => 'grayEE', // default grid colour.
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'tick_length' => 4, // length of ticks in pixels. can be negative. i.e. outside data drawing area.
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'legend' => 'none', // default. no legend.
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// otherwise: 'top-left', 'top-right', 'bottom-left', 'bottom-right',
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// 'outside-top', 'outside-bottom', 'outside-left', or 'outside-right'.
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'legend_offset' => 10, // offset in pixels from graph or outside border.
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'legend_padding' => 5, // padding around legend text.
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'legend_font' => 'default.ttf', // legend text font. don't forget to set 'path_to_fonts' above.
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'legend_size' => 8, // legend text point size.
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'legend_colour' => 'black', // legend text colour.
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'legend_border' => 'none', // legend border colour, or 'none'.
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'decimal_point' => '.', // symbol for decimal separation '.' or ',' *european support.
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'thousand_sep' => ',', // symbol for thousand separation ',' or ''
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);
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var $y_tick_labels = null; // array of text values for y-axis tick labels
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var $offset_relation = null; // array of offsets for different sets of data
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/** @var array y_order data. */
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public $y_order = [];
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/** @var array y_format data. */
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public $y_format = [];
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/** @var array x_data data. */
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public $x_data = [];
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/** @var array colour. */
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public $colour = [];
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/** @var array y_data data. */
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public $y_data = [];
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// init all text - title, labels, and axis text.
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function init() {
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/// Moodle mods: overrides the font path and encodings
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global $CFG;
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/// A default.ttf is searched for in this order:
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/// dataroot/lang/xx_local/fonts
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/// dataroot/lang/xx/fonts
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/// dirroot/lang/xx/fonts
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/// dataroot/lang
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/// lib/
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$currlang = current_language();
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if (file_exists("$CFG->dataroot/lang/".$currlang."_local/fonts/default.ttf")) {
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$fontpath = "$CFG->dataroot/lang/".$currlang."_local/fonts/";
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} else if (file_exists("$CFG->dataroot/lang/$currlang/fonts/default.ttf")) {
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$fontpath = "$CFG->dataroot/lang/$currlang/fonts/";
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} else if (file_exists("$CFG->dirroot/lang/$currlang/fonts/default.ttf")) {
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$fontpath = "$CFG->dirroot/lang/$currlang/fonts/";
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} else if (file_exists("$CFG->dataroot/lang/default.ttf")) {
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$fontpath = "$CFG->dataroot/lang/";
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} else {
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$fontpath = "$CFG->libdir/";
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}
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$this->parameter['path_to_fonts'] = $fontpath;
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/// End Moodle mods
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$this->calculated['outer_border'] = $this->calculated['boundary_box'];
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// outer padding
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$this->calculated['boundary_box']['left'] += $this->parameter['outer_padding'];
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$this->calculated['boundary_box']['top'] += $this->parameter['outer_padding'];
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$this->calculated['boundary_box']['right'] -= $this->parameter['outer_padding'];
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$this->calculated['boundary_box']['bottom'] -= $this->parameter['outer_padding'];
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$this->init_x_axis();
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$this->init_y_axis();
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$this->init_legend();
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$this->init_labels();
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// take into account tick lengths
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$this->calculated['bottom_inner_padding'] = $this->parameter['x_inner_padding'];
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if (($this->parameter['x_ticks_colour'] != 'none') && ($this->parameter['tick_length'] < 0))
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$this->calculated['bottom_inner_padding'] -= $this->parameter['tick_length'];
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$this->calculated['boundary_box']['bottom'] -= $this->calculated['bottom_inner_padding'];
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$this->calculated['left_inner_padding'] = $this->parameter['y_inner_padding'];
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if ($this->parameter['y_axis_text_left']) {
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if (($this->parameter['y_ticks_colour'] != 'none') && ($this->parameter['tick_length'] < 0))
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$this->calculated['left_inner_padding'] -= $this->parameter['tick_length'];
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}
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$this->calculated['boundary_box']['left'] += $this->calculated['left_inner_padding'];
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$this->calculated['right_inner_padding'] = $this->parameter['y_inner_padding'];
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if ($this->parameter['y_axis_text_right']) {
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if (($this->parameter['y_ticks_colour'] != 'none') && ($this->parameter['tick_length'] < 0))
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$this->calculated['right_inner_padding'] -= $this->parameter['tick_length'];
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}
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$this->calculated['boundary_box']['right'] -= $this->calculated['right_inner_padding'];
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// boundaryBox now has coords for plotting area.
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$this->calculated['inner_border'] = $this->calculated['boundary_box'];
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$this->init_data();
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$this->init_x_ticks();
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$this->init_y_ticks();
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}
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function draw_text() {
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$colour = $this->parameter['outer_background'];
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if ($colour != 'none') $this->draw_rectangle($this->calculated['outer_border'], $colour, 'fill'); // graph background
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// draw border around image
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$colour = $this->parameter['outer_border'];
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if ($colour != 'none') $this->draw_rectangle($this->calculated['outer_border'], $colour, 'box'); // graph border
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$this->draw_title();
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$this->draw_x_label();
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$this->draw_y_label_left();
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$this->draw_y_label_right();
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$this->draw_x_axis();
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$this->draw_y_axis();
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if ($this->calculated['y_axis_left']['has_data']) $this->draw_zero_axis_left(); // either draw zero axis on left
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else if ($this->calculated['y_axis_right']['has_data']) $this->draw_zero_axis_right(); // ... or right.
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$this->draw_legend();
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// draw border around plot area
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$colour = $this->parameter['inner_background'];
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if ($colour != 'none') $this->draw_rectangle($this->calculated['inner_border'], $colour, 'fill'); // graph background
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// draw border around image
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$colour = $this->parameter['inner_border'];
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if ($colour != 'none') $this->draw_rectangle($this->calculated['inner_border'], $colour, $this->parameter['inner_border_type']); // graph border
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}
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function draw_stack() {
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$this->init();
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$this->draw_text();
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$yOrder = $this->y_order; // save y_order data.
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// iterate over each data set. order is very important if you want to see data correctly. remember shadows!!
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foreach ($yOrder as $set) {
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$this->y_order = array($set);
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$this->init_data();
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$this->draw_data();
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}
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$this->y_order = $yOrder; // revert y_order data.
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$this->output();
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}
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function draw() {
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$this->init();
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$this->draw_text();
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$this->draw_data();
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$this->output();
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}
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// draw a data set
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function draw_set($order, $set, $offset) {
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if ($offset) @$this->init_variable($colour, $this->y_format[$set]['shadow'], $this->parameter['shadow']);
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else $colour = $this->y_format[$set]['colour'];
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@$this->init_variable($point, $this->y_format[$set]['point'], 'none');
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@$this->init_variable($pointSize, $this->y_format[$set]['point_size'], $this->parameter['point_size']);
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302 |
@$this->init_variable($line, $this->y_format[$set]['line'], 'none');
|
|
|
303 |
@$this->init_variable($brushType, $this->y_format[$set]['brush_type'], $this->parameter['brush_type']);
|
|
|
304 |
@$this->init_variable($brushSize, $this->y_format[$set]['brush_size'], $this->parameter['brush_size']);
|
|
|
305 |
@$this->init_variable($bar, $this->y_format[$set]['bar'], 'none');
|
|
|
306 |
@$this->init_variable($barSize, $this->y_format[$set]['bar_size'], $this->parameter['bar_size']);
|
|
|
307 |
@$this->init_variable($area, $this->y_format[$set]['area'], 'none');
|
|
|
308 |
|
|
|
309 |
$lastX = 0;
|
|
|
310 |
$lastY = 'none';
|
|
|
311 |
$fromX = 0;
|
|
|
312 |
$fromY = 'none';
|
|
|
313 |
|
|
|
314 |
//print "set $set<br />";
|
|
|
315 |
//expand_pre($this->calculated['y_plot']);
|
|
|
316 |
|
|
|
317 |
foreach ($this->x_data as $index => $x) {
|
|
|
318 |
//print "index $index<br />";
|
|
|
319 |
$thisY = $this->calculated['y_plot'][$set][$index];
|
|
|
320 |
$thisX = $this->calculated['x_plot'][$index];
|
|
|
321 |
|
|
|
322 |
//print "$thisX, $thisY <br />";
|
|
|
323 |
|
|
|
324 |
if (($bar!='none') && (string)$thisY != 'none') {
|
|
|
325 |
if (isset($this->offset_relation[$set]) && $relatedset = $this->offset_relation[$set]) {
|
|
|
326 |
$yoffset = $this->calculated['y_plot'][$relatedset][$index]; // Moodle
|
|
|
327 |
} else { // Moodle
|
|
|
328 |
$yoffset = 0; // Moodle
|
|
|
329 |
} // Moodle
|
|
|
330 |
//$this->bar($thisX, $thisY, $bar, $barSize, $colour, $offset, $set); // Moodle
|
|
|
331 |
$this->bar($thisX, $thisY, $bar, $barSize, $colour, $offset, $set, $yoffset); // Moodle
|
|
|
332 |
}
|
|
|
333 |
|
|
|
334 |
if (($area!='none') && (((string)$lastY != 'none') && ((string)$thisY != 'none')))
|
|
|
335 |
$this->area($lastX, $lastY, $thisX, $thisY, $area, $colour, $offset);
|
|
|
336 |
|
|
|
337 |
if (($point!='none') && (string)$thisY != 'none') $this->plot($thisX, $thisY, $point, $pointSize, $colour, $offset);
|
|
|
338 |
|
|
|
339 |
if (($line!='none') && ((string)$thisY != 'none')) {
|
|
|
340 |
if ((string)$fromY != 'none')
|
|
|
341 |
$this->line($fromX, $fromY, $thisX, $thisY, $line, $brushType, $brushSize, $colour, $offset);
|
|
|
342 |
|
|
|
343 |
$fromY = $thisY; // start next line from here
|
|
|
344 |
$fromX = $thisX; // ...
|
|
|
345 |
} else {
|
|
|
346 |
$fromY = 'none';
|
|
|
347 |
$fromX = 'none';
|
|
|
348 |
}
|
|
|
349 |
|
|
|
350 |
$lastX = $thisX;
|
|
|
351 |
$lastY = $thisY;
|
|
|
352 |
}
|
|
|
353 |
}
|
|
|
354 |
|
|
|
355 |
function draw_data() {
|
|
|
356 |
// cycle thru y data to be plotted
|
|
|
357 |
// first check for drop shadows...
|
|
|
358 |
foreach ($this->y_order as $order => $set) {
|
|
|
359 |
@$this->init_variable($offset, $this->y_format[$set]['shadow_offset'], $this->parameter['shadow_offset']);
|
|
|
360 |
@$this->init_variable($colour, $this->y_format[$set]['shadow'], $this->parameter['shadow']);
|
|
|
361 |
if ($colour != 'none') $this->draw_set($order, $set, $offset);
|
|
|
362 |
|
|
|
363 |
}
|
|
|
364 |
|
|
|
365 |
// then draw data
|
|
|
366 |
foreach ($this->y_order as $order => $set) {
|
|
|
367 |
$this->draw_set($order, $set, 0);
|
|
|
368 |
}
|
|
|
369 |
}
|
|
|
370 |
|
|
|
371 |
function draw_legend() {
|
|
|
372 |
$position = $this->parameter['legend'];
|
|
|
373 |
if ($position == 'none') return; // abort if no border
|
|
|
374 |
|
|
|
375 |
$borderColour = $this->parameter['legend_border'];
|
|
|
376 |
$offset = $this->parameter['legend_offset'];
|
|
|
377 |
$padding = $this->parameter['legend_padding'];
|
|
|
378 |
$height = $this->calculated['legend']['boundary_box_all']['height'];
|
|
|
379 |
$width = $this->calculated['legend']['boundary_box_all']['width'];
|
|
|
380 |
$graphTop = $this->calculated['boundary_box']['top'];
|
|
|
381 |
$graphBottom = $this->calculated['boundary_box']['bottom'];
|
|
|
382 |
$graphLeft = $this->calculated['boundary_box']['left'];
|
|
|
383 |
$graphRight = $this->calculated['boundary_box']['right'];
|
|
|
384 |
$outsideRight = $this->calculated['outer_border']['right'];
|
|
|
385 |
$outsideBottom = $this->calculated['outer_border']['bottom'];
|
|
|
386 |
switch ($position) {
|
|
|
387 |
case 'top-left':
|
|
|
388 |
$top = $graphTop + $offset;
|
|
|
389 |
$bottom = $graphTop + $height + $offset;
|
|
|
390 |
$left = $graphLeft + $offset;
|
|
|
391 |
$right = $graphLeft + $width + $offset;
|
|
|
392 |
|
|
|
393 |
break;
|
|
|
394 |
case 'top-right':
|
|
|
395 |
$top = $graphTop + $offset;
|
|
|
396 |
$bottom = $graphTop + $height + $offset;
|
|
|
397 |
$left = $graphRight - $width - $offset;
|
|
|
398 |
$right = $graphRight - $offset;
|
|
|
399 |
|
|
|
400 |
break;
|
|
|
401 |
case 'bottom-left':
|
|
|
402 |
$top = $graphBottom - $height - $offset;
|
|
|
403 |
$bottom = $graphBottom - $offset;
|
|
|
404 |
$left = $graphLeft + $offset;
|
|
|
405 |
$right = $graphLeft + $width + $offset;
|
|
|
406 |
|
|
|
407 |
break;
|
|
|
408 |
case 'bottom-right':
|
|
|
409 |
$top = $graphBottom - $height - $offset;
|
|
|
410 |
$bottom = $graphBottom - $offset;
|
|
|
411 |
$left = $graphRight - $width - $offset;
|
|
|
412 |
$right = $graphRight - $offset;
|
|
|
413 |
break;
|
|
|
414 |
|
|
|
415 |
case 'outside-top' :
|
|
|
416 |
$top = $graphTop;
|
|
|
417 |
$bottom = $graphTop + $height;
|
|
|
418 |
$left = $outsideRight - $width - $offset;
|
|
|
419 |
$right = $outsideRight - $offset;
|
|
|
420 |
break;
|
|
|
421 |
|
|
|
422 |
case 'outside-bottom' :
|
|
|
423 |
$top = $graphBottom - $height;
|
|
|
424 |
$bottom = $graphBottom;
|
|
|
425 |
$left = $outsideRight - $width - $offset;
|
|
|
426 |
$right = $outsideRight - $offset;
|
|
|
427 |
break;
|
|
|
428 |
|
|
|
429 |
case 'outside-left' :
|
|
|
430 |
$top = $outsideBottom - $height - $offset;
|
|
|
431 |
$bottom = $outsideBottom - $offset;
|
|
|
432 |
$left = $graphLeft;
|
|
|
433 |
$right = $graphLeft + $width;
|
|
|
434 |
break;
|
|
|
435 |
|
|
|
436 |
case 'outside-right' :
|
|
|
437 |
$top = $outsideBottom - $height - $offset;
|
|
|
438 |
$bottom = $outsideBottom - $offset;
|
|
|
439 |
$left = $graphRight - $width;
|
|
|
440 |
$right = $graphRight;
|
|
|
441 |
break;
|
|
|
442 |
default: // default is top left. no particular reason.
|
|
|
443 |
$top = $this->calculated['boundary_box']['top'];
|
|
|
444 |
$bottom = $this->calculated['boundary_box']['top'] + $this->calculated['legend']['boundary_box_all']['height'];
|
|
|
445 |
$left = $this->calculated['boundary_box']['left'];
|
|
|
446 |
$right = $this->calculated['boundary_box']['right'] + $this->calculated['legend']['boundary_box_all']['width'];
|
|
|
447 |
|
|
|
448 |
}
|
|
|
449 |
// legend border
|
|
|
450 |
if($borderColour!='none') $this->draw_rectangle(array('top' => $top,
|
|
|
451 |
'left' => $left,
|
|
|
452 |
'bottom' => $bottom,
|
|
|
453 |
'right' => $right), $this->parameter['legend_border'], 'box');
|
|
|
454 |
|
|
|
455 |
// legend text
|
|
|
456 |
$legendText = array('points' => $this->parameter['legend_size'],
|
|
|
457 |
'angle' => 0,
|
|
|
458 |
'font' => $this->parameter['legend_font'],
|
|
|
459 |
'colour' => $this->parameter['legend_colour']);
|
|
|
460 |
|
|
|
461 |
$box = $this->calculated['legend']['boundary_box_max']['height']; // use max height for legend square size.
|
|
|
462 |
$x = $left + $padding;
|
|
|
463 |
$x_text = $x + $box * 2;
|
|
|
464 |
$y = $top + $padding;
|
|
|
465 |
|
|
|
466 |
foreach ($this->y_order as $set) {
|
|
|
467 |
$legendText['text'] = $this->calculated['legend']['text'][$set];
|
|
|
468 |
if ($legendText['text'] != 'none') {
|
|
|
469 |
// if text exists then draw box and text
|
|
|
470 |
$boxColour = $this->colour[$this->y_format[$set]['colour']];
|
|
|
471 |
|
|
|
472 |
// draw box
|
|
|
473 |
ImageFilledRectangle($this->image, $x, $y, $x + $box, $y + $box, $boxColour);
|
|
|
474 |
|
|
|
475 |
// draw text
|
|
|
476 |
$coords = array('x' => $x + $box * 2, 'y' => $y, 'reference' => 'top-left');
|
|
|
477 |
$legendText['boundary_box'] = $this->calculated['legend']['boundary_box'][$set];
|
|
|
478 |
$this->update_boundaryBox($legendText['boundary_box'], $coords);
|
|
|
479 |
$this->print_TTF($legendText);
|
|
|
480 |
$y += $padding + $box;
|
|
|
481 |
}
|
|
|
482 |
}
|
|
|
483 |
|
|
|
484 |
}
|
|
|
485 |
|
|
|
486 |
function draw_y_label_right() {
|
|
|
487 |
if (!$this->parameter['y_label_right']) return;
|
|
|
488 |
$x = $this->calculated['boundary_box']['right'] + $this->parameter['y_inner_padding'];
|
|
|
489 |
if ($this->parameter['y_axis_text_right']) $x += $this->calculated['y_axis_right']['boundary_box_max']['width']
|
|
|
490 |
+ $this->calculated['right_inner_padding'];
|
|
|
491 |
$y = ($this->calculated['boundary_box']['bottom'] + $this->calculated['boundary_box']['top']) / 2;
|
|
|
492 |
|
|
|
493 |
$label = $this->calculated['y_label_right'];
|
|
|
494 |
$coords = array('x' => $x, 'y' => $y, 'reference' => 'left-center');
|
|
|
495 |
$this->update_boundaryBox($label['boundary_box'], $coords);
|
|
|
496 |
$this->print_TTF($label);
|
|
|
497 |
}
|
|
|
498 |
|
|
|
499 |
|
|
|
500 |
function draw_y_label_left() {
|
|
|
501 |
if (!$this->parameter['y_label_left']) return;
|
|
|
502 |
$x = $this->calculated['boundary_box']['left'] - $this->parameter['y_inner_padding'];
|
|
|
503 |
if ($this->parameter['y_axis_text_left']) $x -= $this->calculated['y_axis_left']['boundary_box_max']['width']
|
|
|
504 |
+ $this->calculated['left_inner_padding'];
|
|
|
505 |
$y = ($this->calculated['boundary_box']['bottom'] + $this->calculated['boundary_box']['top']) / 2;
|
|
|
506 |
|
|
|
507 |
$label = $this->calculated['y_label_left'];
|
|
|
508 |
$coords = array('x' => $x, 'y' => $y, 'reference' => 'right-center');
|
|
|
509 |
$this->update_boundaryBox($label['boundary_box'], $coords);
|
|
|
510 |
$this->print_TTF($label);
|
|
|
511 |
}
|
|
|
512 |
|
|
|
513 |
function draw_title() {
|
|
|
514 |
if (!$this->parameter['title']) return;
|
|
|
515 |
//$y = $this->calculated['outside_border']['top'] + $this->parameter['outer_padding'];
|
|
|
516 |
$y = $this->calculated['boundary_box']['top'] - $this->parameter['outer_padding'];
|
|
|
517 |
$x = ($this->calculated['boundary_box']['right'] + $this->calculated['boundary_box']['left']) / 2;
|
|
|
518 |
$label = $this->calculated['title'];
|
|
|
519 |
$coords = array('x' => $x, 'y' => $y, 'reference' => 'bottom-center');
|
|
|
520 |
$this->update_boundaryBox($label['boundary_box'], $coords);
|
|
|
521 |
$this->print_TTF($label);
|
|
|
522 |
}
|
|
|
523 |
|
|
|
524 |
function draw_x_label() {
|
|
|
525 |
if (!$this->parameter['x_label']) return;
|
|
|
526 |
$y = $this->calculated['boundary_box']['bottom'] + $this->parameter['x_inner_padding'];
|
|
|
527 |
if ($this->parameter['x_axis_text']) $y += $this->calculated['x_axis']['boundary_box_max']['height']
|
|
|
528 |
+ $this->calculated['bottom_inner_padding'];
|
|
|
529 |
$x = ($this->calculated['boundary_box']['right'] + $this->calculated['boundary_box']['left']) / 2;
|
|
|
530 |
$label = $this->calculated['x_label'];
|
|
|
531 |
$coords = array('x' => $x, 'y' => $y, 'reference' => 'top-center');
|
|
|
532 |
$this->update_boundaryBox($label['boundary_box'], $coords);
|
|
|
533 |
$this->print_TTF($label);
|
|
|
534 |
}
|
|
|
535 |
|
|
|
536 |
function draw_zero_axis_left() {
|
|
|
537 |
$colour = $this->parameter['zero_axis'];
|
|
|
538 |
if ($colour == 'none') return;
|
|
|
539 |
// draw zero axis on left hand side
|
|
|
540 |
$this->calculated['zero_axis'] = round($this->calculated['boundary_box']['top'] + ($this->calculated['y_axis_left']['max'] * $this->calculated['y_axis_left']['factor']));
|
|
|
541 |
ImageLine($this->image, $this->calculated['boundary_box']['left'], $this->calculated['zero_axis'], $this->calculated['boundary_box']['right'], $this->calculated['zero_axis'], $this->colour[$colour]);
|
|
|
542 |
}
|
|
|
543 |
|
|
|
544 |
function draw_zero_axis_right() {
|
|
|
545 |
$colour = $this->parameter['zero_axis'];
|
|
|
546 |
if ($colour == 'none') return;
|
|
|
547 |
// draw zero axis on right hand side
|
|
|
548 |
$this->calculated['zero_axis'] = round($this->calculated['boundary_box']['top'] + ($this->calculated['y_axis_right']['max'] * $this->calculated['y_axis_right']['factor']));
|
|
|
549 |
ImageLine($this->image, $this->calculated['boundary_box']['left'], $this->calculated['zero_axis'], $this->calculated['boundary_box']['right'], $this->calculated['zero_axis'], $this->colour[$colour]);
|
|
|
550 |
}
|
|
|
551 |
|
|
|
552 |
function draw_x_axis() {
|
|
|
553 |
$gridColour = $this->colour[$this->parameter['grid_colour']];
|
|
|
554 |
$tickColour = $this->colour[$this->parameter['x_ticks_colour']];
|
|
|
555 |
$axis_colour = $this->parameter['axis_colour'];
|
|
|
556 |
$xGrid = $this->parameter['x_grid'];
|
|
|
557 |
$gridTop = (int) round($this->calculated['boundary_box']['top']);
|
|
|
558 |
$gridBottom = (int) round($this->calculated['boundary_box']['bottom']);
|
|
|
559 |
|
|
|
560 |
if ($this->parameter['tick_length'] >= 0) {
|
|
|
561 |
$tickTop = $this->calculated['boundary_box']['bottom'] - $this->parameter['tick_length'];
|
|
|
562 |
$tickBottom = $this->calculated['boundary_box']['bottom'];
|
|
|
563 |
$textBottom = $tickBottom + $this->calculated['bottom_inner_padding'];
|
|
|
564 |
} else {
|
|
|
565 |
$tickTop = $this->calculated['boundary_box']['bottom'];
|
|
|
566 |
$tickBottom = $this->calculated['boundary_box']['bottom'] - $this->parameter['tick_length'];
|
|
|
567 |
$textBottom = $tickBottom + $this->calculated['bottom_inner_padding'];
|
|
|
568 |
}
|
|
|
569 |
|
|
|
570 |
$axis_font = $this->parameter['axis_font'];
|
|
|
571 |
$axis_size = $this->parameter['axis_size'];
|
|
|
572 |
$axis_angle = $this->parameter['x_axis_angle'];
|
|
|
573 |
|
|
|
574 |
if ($axis_angle == 0) $reference = 'top-center';
|
|
|
575 |
if ($axis_angle > 0) $reference = 'top-right';
|
|
|
576 |
if ($axis_angle < 0) $reference = 'top-left';
|
|
|
577 |
if ($axis_angle == 90) $reference = 'top-center';
|
|
|
578 |
|
|
|
579 |
//generic tag information. applies to all axis text.
|
|
|
580 |
$axisTag = array('points' => $axis_size, 'angle' => $axis_angle, 'font' => $axis_font, 'colour' => $axis_colour);
|
|
|
581 |
|
|
|
582 |
foreach ($this->calculated['x_axis']['tick_x'] as $set => $tickX) {
|
|
|
583 |
$tickX = (int) round($tickX);
|
|
|
584 |
// draw x grid if colour specified
|
|
|
585 |
if ($xGrid != 'none') {
|
|
|
586 |
switch ($xGrid) {
|
|
|
587 |
case 'line':
|
|
|
588 |
ImageLine($this->image, $tickX, $gridTop, $tickX, $gridBottom, $gridColour);
|
|
|
589 |
break;
|
|
|
590 |
case 'dash':
|
|
|
591 |
$this->image_dashed_line($this->image, $tickX, $gridTop, $tickX, $gridBottom, $gridColour); // Moodle
|
|
|
592 |
break;
|
|
|
593 |
}
|
|
|
594 |
}
|
|
|
595 |
|
|
|
596 |
if ($this->parameter['x_axis_text'] && !($set % $this->parameter['x_axis_text'])) { // test if tick should be displayed
|
|
|
597 |
// draw tick
|
|
|
598 |
if ($tickColour != 'none')
|
|
|
599 |
ImageLine($this->image, $tickX, $tickTop, $tickX, $tickBottom, $tickColour);
|
|
|
600 |
|
|
|
601 |
// draw axis text
|
|
|
602 |
$coords = array('x' => $tickX, 'y' => $textBottom, 'reference' => $reference);
|
|
|
603 |
$axisTag['text'] = $this->calculated['x_axis']['text'][$set];
|
|
|
604 |
$axisTag['boundary_box'] = $this->calculated['x_axis']['boundary_box'][$set];
|
|
|
605 |
$this->update_boundaryBox($axisTag['boundary_box'], $coords);
|
|
|
606 |
$this->print_TTF($axisTag);
|
|
|
607 |
}
|
|
|
608 |
}
|
|
|
609 |
}
|
|
|
610 |
|
|
|
611 |
function draw_y_axis() {
|
|
|
612 |
$gridColour = $this->colour[$this->parameter['grid_colour']];
|
|
|
613 |
$tickColour = $this->colour[$this->parameter['y_ticks_colour']];
|
|
|
614 |
$axis_colour = $this->parameter['axis_colour'];
|
|
|
615 |
$yGrid = $this->parameter['y_grid'];
|
|
|
616 |
$gridLeft = (int) round($this->calculated['boundary_box']['left']);
|
|
|
617 |
$gridRight = (int) round($this->calculated['boundary_box']['right']);
|
|
|
618 |
|
|
|
619 |
// axis font information
|
|
|
620 |
$axis_font = $this->parameter['axis_font'];
|
|
|
621 |
$axis_size = $this->parameter['axis_size'];
|
|
|
622 |
$axis_angle = $this->parameter['y_axis_angle'];
|
|
|
623 |
$axisTag = array('points' => $axis_size, 'angle' => $axis_angle, 'font' => $axis_font, 'colour' => $axis_colour);
|
|
|
624 |
|
|
|
625 |
|
|
|
626 |
if ($this->calculated['y_axis_left']['has_data']) {
|
|
|
627 |
// LEFT HAND SIDE
|
|
|
628 |
// left and right coords for ticks
|
|
|
629 |
if ($this->parameter['tick_length'] >= 0) {
|
|
|
630 |
$tickLeft = $this->calculated['boundary_box']['left'];
|
|
|
631 |
$tickRight = $this->calculated['boundary_box']['left'] + $this->parameter['tick_length'];
|
|
|
632 |
} else {
|
|
|
633 |
$tickLeft = $this->calculated['boundary_box']['left'] + $this->parameter['tick_length'];
|
|
|
634 |
$tickRight = $this->calculated['boundary_box']['left'];
|
|
|
635 |
}
|
|
|
636 |
$textRight = $tickLeft - $this->calculated['left_inner_padding'];
|
|
|
637 |
|
|
|
638 |
if ($axis_angle == 0) $reference = 'right-center';
|
|
|
639 |
if ($axis_angle > 0) $reference = 'right-top';
|
|
|
640 |
if ($axis_angle < 0) $reference = 'right-bottom';
|
|
|
641 |
if ($axis_angle == 90) $reference = 'right-center';
|
|
|
642 |
|
|
|
643 |
foreach ($this->calculated['y_axis']['tick_y'] as $set => $tickY) {
|
|
|
644 |
$tickY = (int) round($tickY);
|
|
|
645 |
// draw y grid if colour specified
|
|
|
646 |
if ($yGrid != 'none') {
|
|
|
647 |
switch ($yGrid) {
|
|
|
648 |
case 'line':
|
|
|
649 |
ImageLine($this->image, $gridLeft, $tickY, $gridRight, $tickY, $gridColour);
|
|
|
650 |
break;
|
|
|
651 |
case 'dash':
|
|
|
652 |
$this->image_dashed_line($this->image, $gridLeft, $tickY, $gridRight, $tickY, $gridColour); // Moodle
|
|
|
653 |
break;
|
|
|
654 |
}
|
|
|
655 |
}
|
|
|
656 |
|
|
|
657 |
// y axis text
|
|
|
658 |
if ($this->parameter['y_axis_text_left'] && !($set % $this->parameter['y_axis_text_left'])) { // test if tick should be displayed
|
|
|
659 |
// draw tick
|
|
|
660 |
if ($tickColour != 'none')
|
|
|
661 |
ImageLine($this->image, $tickLeft, $tickY, $tickRight, $tickY, $tickColour);
|
|
|
662 |
|
|
|
663 |
// draw axis text...
|
|
|
664 |
$coords = array('x' => $textRight, 'y' => $tickY, 'reference' => $reference);
|
|
|
665 |
$axisTag['text'] = $this->calculated['y_axis_left']['text'][$set];
|
|
|
666 |
$axisTag['boundary_box'] = $this->calculated['y_axis_left']['boundary_box'][$set];
|
|
|
667 |
$this->update_boundaryBox($axisTag['boundary_box'], $coords);
|
|
|
668 |
$this->print_TTF($axisTag);
|
|
|
669 |
}
|
|
|
670 |
}
|
|
|
671 |
}
|
|
|
672 |
|
|
|
673 |
if ($this->calculated['y_axis_right']['has_data']) {
|
|
|
674 |
// RIGHT HAND SIDE
|
|
|
675 |
// left and right coords for ticks
|
|
|
676 |
if ($this->parameter['tick_length'] >= 0) {
|
|
|
677 |
$tickLeft = $this->calculated['boundary_box']['right'] - $this->parameter['tick_length'];
|
|
|
678 |
$tickRight = $this->calculated['boundary_box']['right'];
|
|
|
679 |
} else {
|
|
|
680 |
$tickLeft = $this->calculated['boundary_box']['right'];
|
|
|
681 |
$tickRight = $this->calculated['boundary_box']['right'] - $this->parameter['tick_length'];
|
|
|
682 |
}
|
|
|
683 |
$textLeft = $tickRight+ $this->calculated['left_inner_padding'];
|
|
|
684 |
|
|
|
685 |
if ($axis_angle == 0) $reference = 'left-center';
|
|
|
686 |
if ($axis_angle > 0) $reference = 'left-bottom';
|
|
|
687 |
if ($axis_angle < 0) $reference = 'left-top';
|
|
|
688 |
if ($axis_angle == 90) $reference = 'left-center';
|
|
|
689 |
|
|
|
690 |
foreach ($this->calculated['y_axis']['tick_y'] as $set => $tickY) {
|
|
|
691 |
if (!$this->calculated['y_axis_left']['has_data'] && $yGrid != 'none') { // draw grid if not drawn already (above)
|
|
|
692 |
switch ($yGrid) {
|
|
|
693 |
case 'line':
|
|
|
694 |
ImageLine($this->image, round($gridLeft), round($tickY), round($gridRight), round($tickY), $gridColour);
|
|
|
695 |
break;
|
|
|
696 |
case 'dash':
|
|
|
697 |
$this->image_dashed_line($this->image, round($gridLeft), round($tickY), round($gridRight), round($tickY), $gridColour); // Moodle
|
|
|
698 |
break;
|
|
|
699 |
}
|
|
|
700 |
}
|
|
|
701 |
|
|
|
702 |
if ($this->parameter['y_axis_text_right'] && !($set % $this->parameter['y_axis_text_right'])) { // test if tick should be displayed
|
|
|
703 |
// draw tick
|
|
|
704 |
if ($tickColour != 'none')
|
|
|
705 |
ImageLine($this->image, round($tickLeft), round($tickY), round($tickRight), round($tickY), $tickColour);
|
|
|
706 |
|
|
|
707 |
// draw axis text...
|
|
|
708 |
$coords = array('x' => $textLeft, 'y' => $tickY, 'reference' => $reference);
|
|
|
709 |
$axisTag['text'] = $this->calculated['y_axis_right']['text'][$set];
|
|
|
710 |
$axisTag['boundary_box'] = $this->calculated['y_axis_left']['boundary_box'][$set];
|
|
|
711 |
$this->update_boundaryBox($axisTag['boundary_box'], $coords);
|
|
|
712 |
$this->print_TTF($axisTag);
|
|
|
713 |
}
|
|
|
714 |
}
|
|
|
715 |
}
|
|
|
716 |
}
|
|
|
717 |
|
|
|
718 |
function init_data() {
|
|
|
719 |
$this->calculated['y_plot'] = array(); // array to hold pixel plotting coords for y axis
|
|
|
720 |
$height = $this->calculated['boundary_box']['bottom'] - $this->calculated['boundary_box']['top'];
|
|
|
721 |
$width = $this->calculated['boundary_box']['right'] - $this->calculated['boundary_box']['left'];
|
|
|
722 |
|
|
|
723 |
// calculate pixel steps between axis ticks.
|
|
|
724 |
$this->calculated['y_axis']['step'] = $height / ($this->parameter['y_axis_gridlines'] - 1);
|
|
|
725 |
|
|
|
726 |
// calculate x ticks spacing taking into account x offset for ticks.
|
|
|
727 |
$extraTick = 2 * $this->parameter['x_offset']; // extra tick to account for padding
|
|
|
728 |
$numTicks = $this->calculated['x_axis']['num_ticks'] - 1; // number of x ticks
|
|
|
729 |
|
|
|
730 |
// Hack by rodger to avoid division by zero, see bug 1231
|
|
|
731 |
if ($numTicks==0) $numTicks=1;
|
|
|
732 |
|
|
|
733 |
$this->calculated['x_axis']['step'] = $width / ($numTicks + $extraTick);
|
|
|
734 |
$widthPlot = $width - ($this->calculated['x_axis']['step'] * $extraTick);
|
|
|
735 |
$this->calculated['x_axis']['step'] = $widthPlot / $numTicks;
|
|
|
736 |
|
|
|
737 |
//calculate factor for transforming x,y physical coords to logical coords for right hand y_axis.
|
|
|
738 |
$y_range = $this->calculated['y_axis_right']['max'] - $this->calculated['y_axis_right']['min'];
|
|
|
739 |
$y_range = ($y_range ? $y_range : 1);
|
|
|
740 |
$this->calculated['y_axis_right']['factor'] = $height / $y_range;
|
|
|
741 |
|
|
|
742 |
//calculate factor for transforming x,y physical coords to logical coords for left hand axis.
|
|
|
743 |
$yRange = $this->calculated['y_axis_left']['max'] - $this->calculated['y_axis_left']['min'];
|
|
|
744 |
$yRange = ($yRange ? $yRange : 1);
|
|
|
745 |
$this->calculated['y_axis_left']['factor'] = $height / $yRange;
|
|
|
746 |
if ($this->parameter['x_axis_gridlines'] != 'auto') {
|
|
|
747 |
$xRange = $this->calculated['x_axis']['max'] - $this->calculated['x_axis']['min'];
|
|
|
748 |
$xRange = ($xRange ? $xRange : 1);
|
|
|
749 |
$this->calculated['x_axis']['factor'] = $widthPlot / $xRange;
|
|
|
750 |
}
|
|
|
751 |
|
|
|
752 |
//expand_pre($this->calculated['boundary_box']);
|
|
|
753 |
// cycle thru all data sets...
|
|
|
754 |
$this->calculated['num_bars'] = 0;
|
|
|
755 |
foreach ($this->y_order as $order => $set) {
|
|
|
756 |
// determine how many bars there are
|
|
|
757 |
if (isset($this->y_format[$set]['bar']) && ($this->y_format[$set]['bar'] != 'none')) {
|
|
|
758 |
$this->calculated['bar_offset_index'][$set] = $this->calculated['num_bars']; // index to relate bar with data set.
|
|
|
759 |
$this->calculated['num_bars']++;
|
|
|
760 |
}
|
|
|
761 |
|
|
|
762 |
// calculate y coords for plotting data
|
|
|
763 |
foreach ($this->x_data as $index => $x) {
|
|
|
764 |
$this->calculated['y_plot'][$set][$index] = $this->y_data[$set][$index];
|
|
|
765 |
|
|
|
766 |
if ((string)$this->y_data[$set][$index] != 'none') {
|
|
|
767 |
|
|
|
768 |
if (isset($this->y_format[$set]['y_axis']) && $this->y_format[$set]['y_axis'] == 'right') {
|
|
|
769 |
$this->calculated['y_plot'][$set][$index] =
|
|
|
770 |
round(($this->y_data[$set][$index] - $this->calculated['y_axis_right']['min'])
|
|
|
771 |
* $this->calculated['y_axis_right']['factor']);
|
|
|
772 |
} else {
|
|
|
773 |
//print "$set $index<br />";
|
|
|
774 |
$this->calculated['y_plot'][$set][$index] =
|
|
|
775 |
round(($this->y_data[$set][$index] - $this->calculated['y_axis_left']['min'])
|
|
|
776 |
* $this->calculated['y_axis_left']['factor']);
|
|
|
777 |
}
|
|
|
778 |
|
|
|
779 |
}
|
|
|
780 |
}
|
|
|
781 |
}
|
|
|
782 |
//print "factor ".$this->calculated['x_axis']['factor']."<br />";
|
|
|
783 |
//expand_pre($this->calculated['x_plot']);
|
|
|
784 |
|
|
|
785 |
// calculate bar parameters if bars are to be drawn.
|
|
|
786 |
if ($this->calculated['num_bars']) {
|
|
|
787 |
$xStep = $this->calculated['x_axis']['step'];
|
|
|
788 |
$totalWidth = $this->calculated['x_axis']['step'] - $this->parameter['bar_spacing'];
|
|
|
789 |
$barWidth = $totalWidth / $this->calculated['num_bars'];
|
|
|
790 |
|
|
|
791 |
$barX = ($barWidth - $totalWidth) / 2; // starting x offset
|
|
|
792 |
for ($i=0; $i < $this->calculated['num_bars']; $i++) {
|
|
|
793 |
$this->calculated['bar_offset_x'][$i] = $barX;
|
|
|
794 |
$barX += $barWidth; // add width of bar to x offset.
|
|
|
795 |
}
|
|
|
796 |
$this->calculated['bar_width'] = $barWidth;
|
|
|
797 |
}
|
|
|
798 |
|
|
|
799 |
|
|
|
800 |
}
|
|
|
801 |
|
|
|
802 |
function init_x_ticks() {
|
|
|
803 |
// get coords for x axis ticks and data plots
|
|
|
804 |
//$xGrid = $this->parameter['x_grid'];
|
|
|
805 |
$xStep = $this->calculated['x_axis']['step'];
|
|
|
806 |
$ticksOffset = $this->parameter['x_offset']; // where to start drawing ticks relative to y axis.
|
|
|
807 |
$gridLeft = $this->calculated['boundary_box']['left'] + ($xStep * $ticksOffset); // grid x start
|
|
|
808 |
$tickX = $gridLeft; // tick x coord
|
|
|
809 |
|
|
|
810 |
foreach ($this->calculated['x_axis']['text'] as $set => $value) {
|
|
|
811 |
//print "index: $set<br />";
|
|
|
812 |
// x tick value
|
|
|
813 |
$this->calculated['x_axis']['tick_x'][$set] = $tickX;
|
|
|
814 |
// if num ticks is auto then x plot value is same as x tick
|
|
|
815 |
if ($this->parameter['x_axis_gridlines'] == 'auto') $this->calculated['x_plot'][$set] = round($tickX);
|
|
|
816 |
//print $this->calculated['x_plot'][$set].'<br />';
|
|
|
817 |
$tickX += $xStep;
|
|
|
818 |
}
|
|
|
819 |
|
|
|
820 |
//print "xStep: $xStep <br />";
|
|
|
821 |
// if numeric x axis then calculate x coords for each data point. this is seperate from x ticks.
|
|
|
822 |
$gridX = $gridLeft;
|
|
|
823 |
if (empty($this->calculated['x_axis']['factor'])) {
|
|
|
824 |
$this->calculated['x_axis']['factor'] = 0;
|
|
|
825 |
}
|
|
|
826 |
if (empty($this->calculated['x_axis']['min'])) {
|
|
|
827 |
$this->calculated['x_axis']['min'] = 0;
|
|
|
828 |
}
|
|
|
829 |
$factor = $this->calculated['x_axis']['factor'];
|
|
|
830 |
$min = $this->calculated['x_axis']['min'];
|
|
|
831 |
|
|
|
832 |
if ($this->parameter['x_axis_gridlines'] != 'auto') {
|
|
|
833 |
foreach ($this->x_data as $index => $x) {
|
|
|
834 |
//print "index: $index, x: $x<br />";
|
|
|
835 |
$offset = $x - $this->calculated['x_axis']['min'];
|
|
|
836 |
|
|
|
837 |
//$gridX = ($offset * $this->calculated['x_axis']['factor']);
|
|
|
838 |
//print "offset: $offset <br />";
|
|
|
839 |
//$this->calculated['x_plot'][$set] = $gridLeft + ($offset * $this->calculated['x_axis']['factor']);
|
|
|
840 |
|
|
|
841 |
$this->calculated['x_plot'][$index] = $gridLeft + ($x - $min) * $factor;
|
|
|
842 |
|
|
|
843 |
//print $this->calculated['x_plot'][$set].'<br />';
|
|
|
844 |
}
|
|
|
845 |
}
|
|
|
846 |
//expand_pre($this->calculated['boundary_box']);
|
|
|
847 |
//print "factor ".$this->calculated['x_axis']['factor']."<br />";
|
|
|
848 |
//expand_pre($this->calculated['x_plot']);
|
|
|
849 |
}
|
|
|
850 |
|
|
|
851 |
function init_y_ticks() {
|
|
|
852 |
// get coords for y axis ticks
|
|
|
853 |
|
|
|
854 |
$yStep = $this->calculated['y_axis']['step'];
|
|
|
855 |
$gridBottom = $this->calculated['boundary_box']['bottom'];
|
|
|
856 |
$tickY = $gridBottom; // tick y coord
|
|
|
857 |
|
|
|
858 |
for ($i = 0; $i < $this->parameter['y_axis_gridlines']; $i++) {
|
|
|
859 |
$this->calculated['y_axis']['tick_y'][$i] = $tickY;
|
|
|
860 |
$tickY -= $yStep;
|
|
|
861 |
}
|
|
|
862 |
|
|
|
863 |
}
|
|
|
864 |
|
|
|
865 |
function init_labels() {
|
|
|
866 |
if ($this->parameter['title']) {
|
|
|
867 |
$size = $this->get_boundaryBox(
|
|
|
868 |
array('points' => $this->parameter['title_size'],
|
|
|
869 |
'angle' => 0,
|
|
|
870 |
'font' => $this->parameter['title_font'],
|
|
|
871 |
'text' => $this->parameter['title']));
|
|
|
872 |
$this->calculated['title']['boundary_box'] = $size;
|
|
|
873 |
$this->calculated['title']['text'] = $this->parameter['title'];
|
|
|
874 |
$this->calculated['title']['font'] = $this->parameter['title_font'];
|
|
|
875 |
$this->calculated['title']['points'] = $this->parameter['title_size'];
|
|
|
876 |
$this->calculated['title']['colour'] = $this->parameter['title_colour'];
|
|
|
877 |
$this->calculated['title']['angle'] = 0;
|
|
|
878 |
|
|
|
879 |
$this->calculated['boundary_box']['top'] += $size['height'] + $this->parameter['outer_padding'];
|
|
|
880 |
//$this->calculated['boundary_box']['top'] += $size['height'];
|
|
|
881 |
|
|
|
882 |
} else $this->calculated['title']['boundary_box'] = $this->get_null_size();
|
|
|
883 |
|
|
|
884 |
if ($this->parameter['y_label_left']) {
|
|
|
885 |
$this->calculated['y_label_left']['text'] = $this->parameter['y_label_left'];
|
|
|
886 |
$this->calculated['y_label_left']['angle'] = $this->parameter['y_label_angle'];
|
|
|
887 |
$this->calculated['y_label_left']['font'] = $this->parameter['label_font'];
|
|
|
888 |
$this->calculated['y_label_left']['points'] = $this->parameter['label_size'];
|
|
|
889 |
$this->calculated['y_label_left']['colour'] = $this->parameter['label_colour'];
|
|
|
890 |
|
|
|
891 |
$size = $this->get_boundaryBox($this->calculated['y_label_left']);
|
|
|
892 |
$this->calculated['y_label_left']['boundary_box'] = $size;
|
|
|
893 |
//$this->calculated['boundary_box']['left'] += $size['width'] + $this->parameter['inner_padding'];
|
|
|
894 |
$this->calculated['boundary_box']['left'] += $size['width'];
|
|
|
895 |
|
|
|
896 |
} else $this->calculated['y_label_left']['boundary_box'] = $this->get_null_size();
|
|
|
897 |
|
|
|
898 |
if ($this->parameter['y_label_right']) {
|
|
|
899 |
$this->calculated['y_label_right']['text'] = $this->parameter['y_label_right'];
|
|
|
900 |
$this->calculated['y_label_right']['angle'] = $this->parameter['y_label_angle'];
|
|
|
901 |
$this->calculated['y_label_right']['font'] = $this->parameter['label_font'];
|
|
|
902 |
$this->calculated['y_label_right']['points'] = $this->parameter['label_size'];
|
|
|
903 |
$this->calculated['y_label_right']['colour'] = $this->parameter['label_colour'];
|
|
|
904 |
|
|
|
905 |
$size = $this->get_boundaryBox($this->calculated['y_label_right']);
|
|
|
906 |
$this->calculated['y_label_right']['boundary_box'] = $size;
|
|
|
907 |
//$this->calculated['boundary_box']['right'] -= $size['width'] + $this->parameter['inner_padding'];
|
|
|
908 |
$this->calculated['boundary_box']['right'] -= $size['width'];
|
|
|
909 |
|
|
|
910 |
} else $this->calculated['y_label_right']['boundary_box'] = $this->get_null_size();
|
|
|
911 |
|
|
|
912 |
if ($this->parameter['x_label']) {
|
|
|
913 |
$this->calculated['x_label']['text'] = $this->parameter['x_label'];
|
|
|
914 |
$this->calculated['x_label']['angle'] = $this->parameter['x_label_angle'];
|
|
|
915 |
$this->calculated['x_label']['font'] = $this->parameter['label_font'];
|
|
|
916 |
$this->calculated['x_label']['points'] = $this->parameter['label_size'];
|
|
|
917 |
$this->calculated['x_label']['colour'] = $this->parameter['label_colour'];
|
|
|
918 |
|
|
|
919 |
$size = $this->get_boundaryBox($this->calculated['x_label']);
|
|
|
920 |
$this->calculated['x_label']['boundary_box'] = $size;
|
|
|
921 |
//$this->calculated['boundary_box']['bottom'] -= $size['height'] + $this->parameter['inner_padding'];
|
|
|
922 |
$this->calculated['boundary_box']['bottom'] -= $size['height'];
|
|
|
923 |
|
|
|
924 |
} else $this->calculated['x_label']['boundary_box'] = $this->get_null_size();
|
|
|
925 |
|
|
|
926 |
}
|
|
|
927 |
|
|
|
928 |
|
|
|
929 |
function init_legend() {
|
|
|
930 |
$this->calculated['legend'] = array(); // array to hold calculated values for legend.
|
|
|
931 |
//$this->calculated['legend']['boundary_box_max'] = array('height' => 0, 'width' => 0);
|
|
|
932 |
$this->calculated['legend']['boundary_box_max'] = $this->get_null_size();
|
|
|
933 |
if ($this->parameter['legend'] == 'none') return;
|
|
|
934 |
|
|
|
935 |
$position = $this->parameter['legend'];
|
|
|
936 |
$numSets = 0; // number of data sets with legends.
|
|
|
937 |
$sumTextHeight = 0; // total of height of all legend text items.
|
|
|
938 |
$width = 0;
|
|
|
939 |
$height = 0;
|
|
|
940 |
|
|
|
941 |
foreach ($this->y_order as $set) {
|
|
|
942 |
$text = isset($this->y_format[$set]['legend']) ? $this->y_format[$set]['legend'] : 'none';
|
|
|
943 |
$size = $this->get_boundaryBox(
|
|
|
944 |
array('points' => $this->parameter['legend_size'],
|
|
|
945 |
'angle' => 0,
|
|
|
946 |
'font' => $this->parameter['legend_font'],
|
|
|
947 |
'text' => $text));
|
|
|
948 |
|
|
|
949 |
$this->calculated['legend']['boundary_box'][$set] = $size;
|
|
|
950 |
$this->calculated['legend']['text'][$set] = $text;
|
|
|
951 |
//$this->calculated['legend']['font'][$set] = $this->parameter['legend_font'];
|
|
|
952 |
//$this->calculated['legend']['points'][$set] = $this->parameter['legend_size'];
|
|
|
953 |
//$this->calculated['legend']['angle'][$set] = 0;
|
|
|
954 |
|
|
|
955 |
if ($text && $text!='none') {
|
|
|
956 |
$numSets++;
|
|
|
957 |
$sumTextHeight += $size['height'];
|
|
|
958 |
}
|
|
|
959 |
|
|
|
960 |
if ($size['width'] > $this->calculated['legend']['boundary_box_max']['width'])
|
|
|
961 |
$this->calculated['legend']['boundary_box_max'] = $size;
|
|
|
962 |
}
|
|
|
963 |
|
|
|
964 |
$offset = $this->parameter['legend_offset']; // offset in pixels of legend box from graph border.
|
|
|
965 |
$padding = $this->parameter['legend_padding']; // padding in pixels around legend text.
|
|
|
966 |
$textWidth = $this->calculated['legend']['boundary_box_max']['width']; // width of largest legend item.
|
|
|
967 |
$textHeight = $this->calculated['legend']['boundary_box_max']['height']; // use height as size to use for colour square in legend.
|
|
|
968 |
$width = $padding * 2 + $textWidth + $textHeight * 2; // left and right padding + maximum text width + space for square
|
|
|
969 |
$height = ($padding + $textHeight) * $numSets + $padding; // top and bottom padding + padding between text + text.
|
|
|
970 |
|
|
|
971 |
$this->calculated['legend']['boundary_box_all'] = array('width' => $width,
|
|
|
972 |
'height' => $height,
|
|
|
973 |
'offset' => $offset,
|
|
|
974 |
'reference' => $position);
|
|
|
975 |
|
|
|
976 |
switch ($position) { // move in right or bottom if legend is outside data plotting area.
|
|
|
977 |
case 'outside-top' :
|
|
|
978 |
$this->calculated['boundary_box']['right'] -= $offset + $width; // move in right hand side
|
|
|
979 |
break;
|
|
|
980 |
|
|
|
981 |
case 'outside-bottom' :
|
|
|
982 |
$this->calculated['boundary_box']['right'] -= $offset + $width; // move in right hand side
|
|
|
983 |
break;
|
|
|
984 |
|
|
|
985 |
case 'outside-left' :
|
|
|
986 |
$this->calculated['boundary_box']['bottom'] -= $offset + $height; // move in right hand side
|
|
|
987 |
break;
|
|
|
988 |
|
|
|
989 |
case 'outside-right' :
|
|
|
990 |
$this->calculated['boundary_box']['bottom'] -= $offset + $height; // move in right hand side
|
|
|
991 |
break;
|
|
|
992 |
}
|
|
|
993 |
}
|
|
|
994 |
|
|
|
995 |
function init_y_axis() {
|
|
|
996 |
$this->calculated['y_axis_left'] = array(); // array to hold calculated values for y_axis on left.
|
|
|
997 |
$this->calculated['y_axis_left']['boundary_box_max'] = $this->get_null_size();
|
|
|
998 |
$this->calculated['y_axis_right'] = array(); // array to hold calculated values for y_axis on right.
|
|
|
999 |
$this->calculated['y_axis_right']['boundary_box_max'] = $this->get_null_size();
|
|
|
1000 |
|
|
|
1001 |
$axis_font = $this->parameter['axis_font'];
|
|
|
1002 |
$axis_size = $this->parameter['axis_size'];
|
|
|
1003 |
$axis_colour = $this->parameter['axis_colour'];
|
|
|
1004 |
$axis_angle = $this->parameter['y_axis_angle'];
|
|
|
1005 |
$y_tick_labels = $this->y_tick_labels;
|
|
|
1006 |
|
|
|
1007 |
$this->calculated['y_axis_left']['has_data'] = FALSE;
|
|
|
1008 |
$this->calculated['y_axis_right']['has_data'] = FALSE;
|
|
|
1009 |
|
|
|
1010 |
// find min and max y values.
|
|
|
1011 |
$minLeft = $this->parameter['y_min_left'];
|
|
|
1012 |
$maxLeft = $this->parameter['y_max_left'];
|
|
|
1013 |
$minRight = $this->parameter['y_min_right'];
|
|
|
1014 |
$maxRight = $this->parameter['y_max_right'];
|
|
|
1015 |
$dataLeft = array();
|
|
|
1016 |
$dataRight = array();
|
|
|
1017 |
foreach ($this->y_order as $order => $set) {
|
|
|
1018 |
if (isset($this->y_format[$set]['y_axis']) && $this->y_format[$set]['y_axis'] == 'right') {
|
|
|
1019 |
$this->calculated['y_axis_right']['has_data'] = TRUE;
|
|
|
1020 |
$dataRight = array_merge($dataRight, $this->y_data[$set]);
|
|
|
1021 |
} else {
|
|
|
1022 |
$this->calculated['y_axis_left']['has_data'] = TRUE;
|
|
|
1023 |
$dataLeft = array_merge($dataLeft, $this->y_data[$set]);
|
|
|
1024 |
}
|
|
|
1025 |
}
|
|
|
1026 |
$dataLeftRange = $this->find_range($dataLeft, $minLeft, $maxLeft, $this->parameter['y_resolution_left']);
|
|
|
1027 |
$dataRightRange = $this->find_range($dataRight, $minRight, $maxRight, $this->parameter['y_resolution_right']);
|
|
|
1028 |
$minLeft = $dataLeftRange['min'];
|
|
|
1029 |
$maxLeft = $dataLeftRange['max'];
|
|
|
1030 |
$minRight = $dataRightRange['min'];
|
|
|
1031 |
$maxRight = $dataRightRange['max'];
|
|
|
1032 |
|
|
|
1033 |
$this->calculated['y_axis_left']['min'] = $minLeft;
|
|
|
1034 |
$this->calculated['y_axis_left']['max'] = $maxLeft;
|
|
|
1035 |
$this->calculated['y_axis_right']['min'] = $minRight;
|
|
|
1036 |
$this->calculated['y_axis_right']['max'] = $maxRight;
|
|
|
1037 |
|
|
|
1038 |
$stepLeft = ($maxLeft - $minLeft) / ($this->parameter['y_axis_gridlines'] - 1);
|
|
|
1039 |
$startLeft = $minLeft;
|
|
|
1040 |
$step_right = ($maxRight - $minRight) / ($this->parameter['y_axis_gridlines'] - 1);
|
|
|
1041 |
$start_right = $minRight;
|
|
|
1042 |
|
|
|
1043 |
if ($this->parameter['y_axis_text_left']) {
|
|
|
1044 |
for ($i = 0; $i < $this->parameter['y_axis_gridlines']; $i++) { // calculate y axis text sizes
|
|
|
1045 |
// left y axis
|
|
|
1046 |
if ($y_tick_labels) {
|
|
|
1047 |
$value = $y_tick_labels[$i];
|
|
|
1048 |
} else {
|
|
|
1049 |
$value = number_format($startLeft, $this->parameter['y_decimal_left'], $this->parameter['decimal_point'], $this->parameter['thousand_sep']);
|
|
|
1050 |
}
|
|
|
1051 |
$this->calculated['y_axis_left']['data'][$i] = $startLeft;
|
|
|
1052 |
$this->calculated['y_axis_left']['text'][$i] = $value; // text is formatted raw data
|
|
|
1053 |
|
|
|
1054 |
$size = $this->get_boundaryBox(
|
|
|
1055 |
array('points' => $axis_size,
|
|
|
1056 |
'font' => $axis_font,
|
|
|
1057 |
'angle' => $axis_angle,
|
|
|
1058 |
'colour' => $axis_colour,
|
|
|
1059 |
'text' => $value));
|
|
|
1060 |
$this->calculated['y_axis_left']['boundary_box'][$i] = $size;
|
|
|
1061 |
|
|
|
1062 |
if ($size['height'] > $this->calculated['y_axis_left']['boundary_box_max']['height'])
|
|
|
1063 |
$this->calculated['y_axis_left']['boundary_box_max']['height'] = $size['height'];
|
|
|
1064 |
if ($size['width'] > $this->calculated['y_axis_left']['boundary_box_max']['width'])
|
|
|
1065 |
$this->calculated['y_axis_left']['boundary_box_max']['width'] = $size['width'];
|
|
|
1066 |
|
|
|
1067 |
$startLeft += $stepLeft;
|
|
|
1068 |
}
|
|
|
1069 |
$this->calculated['boundary_box']['left'] += $this->calculated['y_axis_left']['boundary_box_max']['width']
|
|
|
1070 |
+ $this->parameter['y_inner_padding'];
|
|
|
1071 |
}
|
|
|
1072 |
|
|
|
1073 |
if ($this->parameter['y_axis_text_right']) {
|
|
|
1074 |
for ($i = 0; $i < $this->parameter['y_axis_gridlines']; $i++) { // calculate y axis text sizes
|
|
|
1075 |
// right y axis
|
|
|
1076 |
$value = number_format($start_right, $this->parameter['y_decimal_right'], $this->parameter['decimal_point'], $this->parameter['thousand_sep']);
|
|
|
1077 |
$this->calculated['y_axis_right']['data'][$i] = $start_right;
|
|
|
1078 |
$this->calculated['y_axis_right']['text'][$i] = $value; // text is formatted raw data
|
|
|
1079 |
$size = $this->get_boundaryBox(
|
|
|
1080 |
array('points' => $axis_size,
|
|
|
1081 |
'font' => $axis_font,
|
|
|
1082 |
'angle' => $axis_angle,
|
|
|
1083 |
'colour' => $axis_colour,
|
|
|
1084 |
'text' => $value));
|
|
|
1085 |
$this->calculated['y_axis_right']['boundary_box'][$i] = $size;
|
|
|
1086 |
|
|
|
1087 |
if ($size['height'] > $this->calculated['y_axis_right']['boundary_box_max']['height'])
|
|
|
1088 |
$this->calculated['y_axis_right']['boundary_box_max'] = $size;
|
|
|
1089 |
if ($size['width'] > $this->calculated['y_axis_right']['boundary_box_max']['width'])
|
|
|
1090 |
$this->calculated['y_axis_right']['boundary_box_max']['width'] = $size['width'];
|
|
|
1091 |
|
|
|
1092 |
$start_right += $step_right;
|
|
|
1093 |
}
|
|
|
1094 |
$this->calculated['boundary_box']['right'] -= $this->calculated['y_axis_right']['boundary_box_max']['width']
|
|
|
1095 |
+ $this->parameter['y_inner_padding'];
|
|
|
1096 |
}
|
|
|
1097 |
}
|
|
|
1098 |
|
|
|
1099 |
function init_x_axis() {
|
|
|
1100 |
$this->calculated['x_axis'] = array(); // array to hold calculated values for x_axis.
|
|
|
1101 |
$this->calculated['x_axis']['boundary_box_max'] = array('height' => 0, 'width' => 0);
|
|
|
1102 |
|
|
|
1103 |
$axis_font = $this->parameter['axis_font'];
|
|
|
1104 |
$axis_size = $this->parameter['axis_size'];
|
|
|
1105 |
$axis_colour = $this->parameter['axis_colour'];
|
|
|
1106 |
$axis_angle = $this->parameter['x_axis_angle'];
|
|
|
1107 |
|
|
|
1108 |
// check whether to treat x axis as numeric
|
|
|
1109 |
if ($this->parameter['x_axis_gridlines'] == 'auto') { // auto means text based x_axis, not numeric...
|
|
|
1110 |
$this->calculated['x_axis']['num_ticks'] = sizeof($this->x_data);
|
|
|
1111 |
$data = $this->x_data;
|
|
|
1112 |
for ($i=0; $i < $this->calculated['x_axis']['num_ticks']; $i++) {
|
|
|
1113 |
$value = array_shift($data); // grab value from begin of array
|
|
|
1114 |
$this->calculated['x_axis']['data'][$i] = $value;
|
|
|
1115 |
$this->calculated['x_axis']['text'][$i] = $value; // raw data and text are both the same in this case
|
|
|
1116 |
$size = $this->get_boundaryBox(
|
|
|
1117 |
array('points' => $axis_size,
|
|
|
1118 |
'font' => $axis_font,
|
|
|
1119 |
'angle' => $axis_angle,
|
|
|
1120 |
'colour' => $axis_colour,
|
|
|
1121 |
'text' => $value));
|
|
|
1122 |
$this->calculated['x_axis']['boundary_box'][$i] = $size;
|
|
|
1123 |
if ($size['height'] > $this->calculated['x_axis']['boundary_box_max']['height'])
|
|
|
1124 |
$this->calculated['x_axis']['boundary_box_max'] = $size;
|
|
|
1125 |
}
|
|
|
1126 |
|
|
|
1127 |
} else { // x axis is numeric so find max min values...
|
|
|
1128 |
$this->calculated['x_axis']['num_ticks'] = $this->parameter['x_axis_gridlines'];
|
|
|
1129 |
|
|
|
1130 |
$min = $this->parameter['x_min'];
|
|
|
1131 |
$max = $this->parameter['x_max'];
|
|
|
1132 |
$data = array();
|
|
|
1133 |
$data = $this->find_range($this->x_data, $min, $max, $this->parameter['x_resolution']);
|
|
|
1134 |
$min = $data['min'];
|
|
|
1135 |
$max = $data['max'];
|
|
|
1136 |
$this->calculated['x_axis']['min'] = $min;
|
|
|
1137 |
$this->calculated['x_axis']['max'] = $max;
|
|
|
1138 |
|
|
|
1139 |
$step = ($max - $min) / ($this->calculated['x_axis']['num_ticks'] - 1);
|
|
|
1140 |
$start = $min;
|
|
|
1141 |
|
|
|
1142 |
for ($i = 0; $i < $this->calculated['x_axis']['num_ticks']; $i++) { // calculate x axis text sizes
|
|
|
1143 |
$value = number_format($start, $this->parameter['xDecimal'], $this->parameter['decimal_point'], $this->parameter['thousand_sep']);
|
|
|
1144 |
$this->calculated['x_axis']['data'][$i] = $start;
|
|
|
1145 |
$this->calculated['x_axis']['text'][$i] = $value; // text is formatted raw data
|
|
|
1146 |
|
|
|
1147 |
$size = $this->get_boundaryBox(
|
|
|
1148 |
array('points' => $axis_size,
|
|
|
1149 |
'font' => $axis_font,
|
|
|
1150 |
'angle' => $axis_angle,
|
|
|
1151 |
'colour' => $axis_colour,
|
|
|
1152 |
'text' => $value));
|
|
|
1153 |
$this->calculated['x_axis']['boundary_box'][$i] = $size;
|
|
|
1154 |
|
|
|
1155 |
if ($size['height'] > $this->calculated['x_axis']['boundary_box_max']['height'])
|
|
|
1156 |
$this->calculated['x_axis']['boundary_box_max'] = $size;
|
|
|
1157 |
|
|
|
1158 |
$start += $step;
|
|
|
1159 |
}
|
|
|
1160 |
}
|
|
|
1161 |
if ($this->parameter['x_axis_text'])
|
|
|
1162 |
$this->calculated['boundary_box']['bottom'] -= $this->calculated['x_axis']['boundary_box_max']['height']
|
|
|
1163 |
+ $this->parameter['x_inner_padding'];
|
|
|
1164 |
}
|
|
|
1165 |
|
|
|
1166 |
// find max and min values for a data array given the resolution.
|
|
|
1167 |
function find_range($data, $min, $max, $resolution) {
|
|
|
1168 |
if (sizeof($data) == 0 ) return array('min' => 0, 'max' => 0);
|
|
|
1169 |
foreach ($data as $key => $value) {
|
|
|
1170 |
if ($value=='none') continue;
|
|
|
1171 |
if ($value > $max) $max = $value;
|
|
|
1172 |
if ($value < $min) $min = $value;
|
|
|
1173 |
}
|
|
|
1174 |
|
|
|
1175 |
if ($max == 0) {
|
|
|
1176 |
$factor = 1;
|
|
|
1177 |
} else {
|
|
|
1178 |
if ($max < 0) $factor = - pow(10, (floor(log10(abs($max))) + $resolution) );
|
|
|
1179 |
else $factor = pow(10, (floor(log10(abs($max))) - $resolution) );
|
|
|
1180 |
}
|
|
|
1181 |
if ($factor > 0.1) { // To avoid some wierd rounding errors (Moodle)
|
|
|
1182 |
$factor = round($factor * 1000.0) / 1000.0; // To avoid some wierd rounding errors (Moodle)
|
|
|
1183 |
} // To avoid some wierd rounding errors (Moodle)
|
|
|
1184 |
|
|
|
1185 |
$max = $factor * @ceil($max / $factor);
|
|
|
1186 |
$min = $factor * @floor($min / $factor);
|
|
|
1187 |
|
|
|
1188 |
//print "max=$max, min=$min<br />";
|
|
|
1189 |
|
|
|
1190 |
return array('min' => $min, 'max' => $max);
|
|
|
1191 |
}
|
|
|
1192 |
|
|
|
1193 |
public function __construct() {
|
|
|
1194 |
if (func_num_args() == 2) {
|
|
|
1195 |
$this->parameter['width'] = func_get_arg(0);
|
|
|
1196 |
$this->parameter['height'] = func_get_arg(1);
|
|
|
1197 |
}
|
|
|
1198 |
//$this->boundaryBox = array(
|
|
|
1199 |
$this->calculated['boundary_box'] = array(
|
|
|
1200 |
'left' => 0,
|
|
|
1201 |
'top' => 0,
|
|
|
1202 |
'right' => $this->parameter['width'] - 1,
|
|
|
1203 |
'bottom' => $this->parameter['height'] - 1);
|
|
|
1204 |
|
|
|
1205 |
$this->init_colours();
|
|
|
1206 |
|
|
|
1207 |
//ImageColorTransparent($this->image, $this->colour['white']); // colour for transparency
|
|
|
1208 |
}
|
|
|
1209 |
|
|
|
1210 |
/**
|
|
|
1211 |
* Old syntax of class constructor. Deprecated in PHP7.
|
|
|
1212 |
*
|
|
|
1213 |
* @deprecated since Moodle 3.1
|
|
|
1214 |
*/
|
|
|
1215 |
public function graph() {
|
|
|
1216 |
debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
|
|
|
1217 |
self::__construct();
|
|
|
1218 |
}
|
|
|
1219 |
|
|
|
1220 |
/**
|
|
|
1221 |
* Prepare label's text for GD output.
|
|
|
1222 |
*
|
|
|
1223 |
* @param string $label string to be prepared.
|
|
|
1224 |
* @return string Reversed input string, if we are in RTL mode and has no numbers.
|
|
|
1225 |
* Otherwise, returns the string as is.
|
|
|
1226 |
*/
|
|
|
1227 |
private function prepare_label_text($label) {
|
|
|
1228 |
if (right_to_left() and !preg_match('/[0-9]/i', $label)) {
|
|
|
1229 |
return core_text::strrev($label);
|
|
|
1230 |
} else {
|
|
|
1231 |
return $label;
|
|
|
1232 |
}
|
|
|
1233 |
}
|
|
|
1234 |
|
|
|
1235 |
function print_TTF($message) {
|
|
|
1236 |
$points = $message['points'];
|
|
|
1237 |
$angle = $message['angle'];
|
|
|
1238 |
// We have to manually reverse the label, since php GD cannot handle RTL characters properly in UTF8 strings.
|
|
|
1239 |
$text = $this->prepare_label_text($message['text']);
|
|
|
1240 |
$colour = $this->colour[$message['colour']];
|
|
|
1241 |
$font = $this->parameter['path_to_fonts'].$message['font'];
|
|
|
1242 |
|
|
|
1243 |
$x = $message['boundary_box']['x'];
|
|
|
1244 |
$y = $message['boundary_box']['y'];
|
|
|
1245 |
$offsetX = $message['boundary_box']['offsetX'];
|
|
|
1246 |
$offsetY = $message['boundary_box']['offsetY'];
|
|
|
1247 |
$height = $message['boundary_box']['height'];
|
|
|
1248 |
$width = $message['boundary_box']['width'];
|
|
|
1249 |
$reference = $message['boundary_box']['reference'];
|
|
|
1250 |
|
|
|
1251 |
switch ($reference) {
|
|
|
1252 |
case 'top-left':
|
|
|
1253 |
case 'left-top':
|
|
|
1254 |
$y += $height - $offsetY;
|
|
|
1255 |
//$y += $offsetY;
|
|
|
1256 |
$x += $offsetX;
|
|
|
1257 |
break;
|
|
|
1258 |
case 'left-center':
|
|
|
1259 |
$y += ($height / 2) - $offsetY;
|
|
|
1260 |
$x += $offsetX;
|
|
|
1261 |
break;
|
|
|
1262 |
case 'left-bottom':
|
|
|
1263 |
$y -= $offsetY;
|
|
|
1264 |
$x += $offsetX;
|
|
|
1265 |
break;
|
|
|
1266 |
case 'top-center':
|
|
|
1267 |
$y += $height - $offsetY;
|
|
|
1268 |
$x -= ($width / 2) - $offsetX;
|
|
|
1269 |
break;
|
|
|
1270 |
case 'top-right':
|
|
|
1271 |
case 'right-top':
|
|
|
1272 |
$y += $height - $offsetY;
|
|
|
1273 |
$x -= $width - $offsetX;
|
|
|
1274 |
break;
|
|
|
1275 |
case 'right-center':
|
|
|
1276 |
$y += ($height / 2) - $offsetY;
|
|
|
1277 |
$x -= $width - $offsetX;
|
|
|
1278 |
break;
|
|
|
1279 |
case 'right-bottom':
|
|
|
1280 |
$y -= $offsetY;
|
|
|
1281 |
$x -= $width - $offsetX;
|
|
|
1282 |
break;
|
|
|
1283 |
case 'bottom-center':
|
|
|
1284 |
$y -= $offsetY;
|
|
|
1285 |
$x -= ($width / 2) - $offsetX;
|
|
|
1286 |
break;
|
|
|
1287 |
default:
|
|
|
1288 |
$y = 0;
|
|
|
1289 |
$x = 0;
|
|
|
1290 |
break;
|
|
|
1291 |
}
|
|
|
1292 |
// start of Moodle addition
|
|
|
1293 |
$text = core_text::utf8_to_entities($text, true, true); //does not work with hex entities!
|
|
|
1294 |
// end of Moodle addition
|
|
|
1295 |
[$x, $y] = [(int) round($x), (int) round($y)];
|
|
|
1296 |
ImageTTFText($this->image, $points, $angle, $x, $y, $colour, $font, $text);
|
|
|
1297 |
}
|
|
|
1298 |
|
|
|
1299 |
// move boundaryBox to coordinates specified
|
|
|
1300 |
function update_boundaryBox(&$boundaryBox, $coords) {
|
|
|
1301 |
$width = $boundaryBox['width'];
|
|
|
1302 |
$height = $boundaryBox['height'];
|
|
|
1303 |
$x = $coords['x'];
|
|
|
1304 |
$y = $coords['y'];
|
|
|
1305 |
$reference = $coords['reference'];
|
|
|
1306 |
switch ($reference) {
|
|
|
1307 |
case 'top-left':
|
|
|
1308 |
case 'left-top':
|
|
|
1309 |
$top = $y;
|
|
|
1310 |
$bottom = $y + $height;
|
|
|
1311 |
$left = $x;
|
|
|
1312 |
$right = $x + $width;
|
|
|
1313 |
break;
|
|
|
1314 |
case 'left-center':
|
|
|
1315 |
$top = $y - ($height / 2);
|
|
|
1316 |
$bottom = $y + ($height / 2);
|
|
|
1317 |
$left = $x;
|
|
|
1318 |
$right = $x + $width;
|
|
|
1319 |
break;
|
|
|
1320 |
case 'left-bottom':
|
|
|
1321 |
$top = $y - $height;
|
|
|
1322 |
$bottom = $y;
|
|
|
1323 |
$left = $x;
|
|
|
1324 |
$right = $x + $width;
|
|
|
1325 |
break;
|
|
|
1326 |
case 'top-center':
|
|
|
1327 |
$top = $y;
|
|
|
1328 |
$bottom = $y + $height;
|
|
|
1329 |
$left = $x - ($width / 2);
|
|
|
1330 |
$right = $x + ($width / 2);
|
|
|
1331 |
break;
|
|
|
1332 |
case 'right-top':
|
|
|
1333 |
case 'top-right':
|
|
|
1334 |
$top = $y;
|
|
|
1335 |
$bottom = $y + $height;
|
|
|
1336 |
$left = $x - $width;
|
|
|
1337 |
$right = $x;
|
|
|
1338 |
break;
|
|
|
1339 |
case 'right-center':
|
|
|
1340 |
$top = $y - ($height / 2);
|
|
|
1341 |
$bottom = $y + ($height / 2);
|
|
|
1342 |
$left = $x - $width;
|
|
|
1343 |
$right = $x;
|
|
|
1344 |
break;
|
|
|
1345 |
case 'bottom=right':
|
|
|
1346 |
case 'right-bottom':
|
|
|
1347 |
$top = $y - $height;
|
|
|
1348 |
$bottom = $y;
|
|
|
1349 |
$left = $x - $width;
|
|
|
1350 |
$right = $x;
|
|
|
1351 |
break;
|
|
|
1352 |
default:
|
|
|
1353 |
$top = 0;
|
|
|
1354 |
$bottom = $height;
|
|
|
1355 |
$left = 0;
|
|
|
1356 |
$right = $width;
|
|
|
1357 |
break;
|
|
|
1358 |
}
|
|
|
1359 |
|
|
|
1360 |
$boundaryBox = array_merge($boundaryBox, array('top' => $top,
|
|
|
1361 |
'bottom' => $bottom,
|
|
|
1362 |
'left' => $left,
|
|
|
1363 |
'right' => $right,
|
|
|
1364 |
'x' => $x,
|
|
|
1365 |
'y' => $y,
|
|
|
1366 |
'reference' => $reference));
|
|
|
1367 |
}
|
|
|
1368 |
|
|
|
1369 |
function get_null_size() {
|
|
|
1370 |
return array('width' => 0,
|
|
|
1371 |
'height' => 0,
|
|
|
1372 |
'offsetX' => 0,
|
|
|
1373 |
'offsetY' => 0,
|
|
|
1374 |
//'fontHeight' => 0
|
|
|
1375 |
);
|
|
|
1376 |
}
|
|
|
1377 |
|
|
|
1378 |
function get_boundaryBox($message) {
|
|
|
1379 |
$points = $message['points'];
|
|
|
1380 |
$angle = $message['angle'];
|
|
|
1381 |
$font = $this->parameter['path_to_fonts'].$message['font'];
|
|
|
1382 |
$text = $message['text'];
|
|
|
1383 |
|
|
|
1384 |
//print ('get_boundaryBox');
|
|
|
1385 |
//expandPre($message);
|
|
|
1386 |
|
|
|
1387 |
// get font size
|
|
|
1388 |
$bounds = ImageTTFBBox($points, $angle, $font, "W");
|
|
|
1389 |
if ($angle < 0) {
|
|
|
1390 |
$fontHeight = abs($bounds[7]-$bounds[1]);
|
|
|
1391 |
} else if ($angle > 0) {
|
|
|
1392 |
$fontHeight = abs($bounds[1]-$bounds[7]);
|
|
|
1393 |
} else {
|
|
|
1394 |
$fontHeight = abs($bounds[7]-$bounds[1]);
|
|
|
1395 |
}
|
|
|
1396 |
|
|
|
1397 |
// get boundary box and offsets for printing at an angle
|
|
|
1398 |
// start of Moodle addition
|
|
|
1399 |
$text = core_text::utf8_to_entities($text, true, true); //gd does not work with hex entities!
|
|
|
1400 |
// end of Moodle addition
|
|
|
1401 |
$bounds = ImageTTFBBox($points, $angle, $font, $text);
|
|
|
1402 |
|
|
|
1403 |
if ($angle < 0) {
|
|
|
1404 |
$width = abs($bounds[4]-$bounds[0]);
|
|
|
1405 |
$height = abs($bounds[3]-$bounds[7]);
|
|
|
1406 |
$offsetY = abs($bounds[3]-$bounds[1]);
|
|
|
1407 |
$offsetX = 0;
|
|
|
1408 |
|
|
|
1409 |
} else if ($angle > 0) {
|
|
|
1410 |
$width = abs($bounds[2]-$bounds[6]);
|
|
|
1411 |
$height = abs($bounds[1]-$bounds[5]);
|
|
|
1412 |
$offsetY = 0;
|
|
|
1413 |
$offsetX = abs($bounds[0]-$bounds[6]);
|
|
|
1414 |
|
|
|
1415 |
} else {
|
|
|
1416 |
$width = abs($bounds[4]-$bounds[6]);
|
|
|
1417 |
$height = abs($bounds[7]-$bounds[1]);
|
|
|
1418 |
$offsetY = $bounds[1];
|
|
|
1419 |
$offsetX = 0;
|
|
|
1420 |
}
|
|
|
1421 |
|
|
|
1422 |
//return values
|
|
|
1423 |
return array('width' => $width,
|
|
|
1424 |
'height' => $height,
|
|
|
1425 |
'offsetX' => $offsetX,
|
|
|
1426 |
'offsetY' => $offsetY,
|
|
|
1427 |
//'fontHeight' => $fontHeight
|
|
|
1428 |
);
|
|
|
1429 |
}
|
|
|
1430 |
|
|
|
1431 |
function draw_rectangle($border, $colour, $type) {
|
|
|
1432 |
$colour = $this->colour[$colour];
|
|
|
1433 |
switch ($type) {
|
|
|
1434 |
case 'fill': // fill the rectangle
|
|
|
1435 |
ImageFilledRectangle($this->image, $border['left'], $border['top'], $border['right'], $border['bottom'], $colour);
|
|
|
1436 |
break;
|
|
|
1437 |
case 'box': // all sides
|
|
|
1438 |
ImageRectangle($this->image, $border['left'], $border['top'], $border['right'], $border['bottom'], $colour);
|
|
|
1439 |
break;
|
|
|
1440 |
case 'axis': // bottom x axis and left y axis
|
|
|
1441 |
ImageLine($this->image, $border['left'], $border['top'], $border['left'], $border['bottom'], $colour);
|
|
|
1442 |
ImageLine($this->image, $border['left'], $border['bottom'], $border['right'], $border['bottom'], $colour);
|
|
|
1443 |
break;
|
|
|
1444 |
case 'y': // left y axis only
|
|
|
1445 |
case 'y-left':
|
|
|
1446 |
ImageLine($this->image, $border['left'], $border['top'], $border['left'], $border['bottom'], $colour);
|
|
|
1447 |
break;
|
|
|
1448 |
case 'y-right': // right y axis only
|
|
|
1449 |
ImageLine($this->image, $border['right'], $border['top'], $border['right'], $border['bottom'], $colour);
|
|
|
1450 |
break;
|
|
|
1451 |
case 'x': // bottom x axis only
|
|
|
1452 |
ImageLine($this->image, $border['left'], $border['bottom'], $border['right'], $border['bottom'], $colour);
|
|
|
1453 |
break;
|
|
|
1454 |
case 'u': // u shaped. bottom x axis and both left and right y axis.
|
|
|
1455 |
ImageLine($this->image, $border['left'], $border['top'], $border['left'], $border['bottom'], $colour);
|
|
|
1456 |
ImageLine($this->image, $border['right'], $border['top'], $border['right'], $border['bottom'], $colour);
|
|
|
1457 |
ImageLine($this->image, $border['left'], $border['bottom'], $border['right'], $border['bottom'], $colour);
|
|
|
1458 |
break;
|
|
|
1459 |
|
|
|
1460 |
}
|
|
|
1461 |
}
|
|
|
1462 |
|
|
|
1463 |
function init_colours() {
|
|
|
1464 |
$this->image = ImageCreate($this->parameter['width'], $this->parameter['height']);
|
|
|
1465 |
// standard colours
|
|
|
1466 |
$this->colour['white'] = ImageColorAllocate ($this->image, 0xFF, 0xFF, 0xFF); // first colour is background colour.
|
|
|
1467 |
$this->colour['black'] = ImageColorAllocate ($this->image, 0x00, 0x00, 0x00);
|
|
|
1468 |
$this->colour['maroon'] = ImageColorAllocate ($this->image, 0x80, 0x00, 0x00);
|
|
|
1469 |
$this->colour['green'] = ImageColorAllocate ($this->image, 0x00, 0x80, 0x00);
|
|
|
1470 |
$this->colour['ltgreen'] = ImageColorAllocate ($this->image, 0x52, 0xF1, 0x7F);
|
|
|
1471 |
$this->colour['ltltgreen']= ImageColorAllocate ($this->image, 0x99, 0xFF, 0x99);
|
|
|
1472 |
$this->colour['olive'] = ImageColorAllocate ($this->image, 0x80, 0x80, 0x00);
|
|
|
1473 |
$this->colour['navy'] = ImageColorAllocate ($this->image, 0x00, 0x00, 0x80);
|
|
|
1474 |
$this->colour['purple'] = ImageColorAllocate ($this->image, 0x80, 0x00, 0x80);
|
|
|
1475 |
$this->colour['gray'] = ImageColorAllocate ($this->image, 0x80, 0x80, 0x80);
|
|
|
1476 |
$this->colour['red'] = ImageColorAllocate ($this->image, 0xFF, 0x00, 0x00);
|
|
|
1477 |
$this->colour['ltred'] = ImageColorAllocate ($this->image, 0xFF, 0x99, 0x99);
|
|
|
1478 |
$this->colour['ltltred'] = ImageColorAllocate ($this->image, 0xFF, 0xCC, 0xCC);
|
|
|
1479 |
$this->colour['orange'] = ImageColorAllocate ($this->image, 0xFF, 0x66, 0x00);
|
|
|
1480 |
$this->colour['ltorange'] = ImageColorAllocate ($this->image, 0xFF, 0x99, 0x66);
|
|
|
1481 |
$this->colour['ltltorange'] = ImageColorAllocate ($this->image, 0xFF, 0xcc, 0x99);
|
|
|
1482 |
$this->colour['lime'] = ImageColorAllocate ($this->image, 0x00, 0xFF, 0x00);
|
|
|
1483 |
$this->colour['yellow'] = ImageColorAllocate ($this->image, 0xFF, 0xFF, 0x00);
|
|
|
1484 |
$this->colour['blue'] = ImageColorAllocate ($this->image, 0x00, 0x00, 0xFF);
|
|
|
1485 |
$this->colour['ltblue'] = ImageColorAllocate ($this->image, 0x00, 0xCC, 0xFF);
|
|
|
1486 |
$this->colour['ltltblue'] = ImageColorAllocate ($this->image, 0x99, 0xFF, 0xFF);
|
|
|
1487 |
$this->colour['fuchsia'] = ImageColorAllocate ($this->image, 0xFF, 0x00, 0xFF);
|
|
|
1488 |
$this->colour['aqua'] = ImageColorAllocate ($this->image, 0x00, 0xFF, 0xFF);
|
|
|
1489 |
//$this->colour['white'] = ImageColorAllocate ($this->image, 0xFF, 0xFF, 0xFF);
|
|
|
1490 |
// shades of gray
|
|
|
1491 |
$this->colour['grayF0'] = ImageColorAllocate ($this->image, 0xF0, 0xF0, 0xF0);
|
|
|
1492 |
$this->colour['grayEE'] = ImageColorAllocate ($this->image, 0xEE, 0xEE, 0xEE);
|
|
|
1493 |
$this->colour['grayDD'] = ImageColorAllocate ($this->image, 0xDD, 0xDD, 0xDD);
|
|
|
1494 |
$this->colour['grayCC'] = ImageColorAllocate ($this->image, 0xCC, 0xCC, 0xCC);
|
|
|
1495 |
$this->colour['gray33'] = ImageColorAllocate ($this->image, 0x33, 0x33, 0x33);
|
|
|
1496 |
$this->colour['gray66'] = ImageColorAllocate ($this->image, 0x66, 0x66, 0x66);
|
|
|
1497 |
$this->colour['gray99'] = ImageColorAllocate ($this->image, 0x99, 0x99, 0x99);
|
|
|
1498 |
|
|
|
1499 |
$this->colour['none'] = 'none';
|
|
|
1500 |
return true;
|
|
|
1501 |
}
|
|
|
1502 |
|
|
|
1503 |
function output() {
|
|
|
1504 |
if ($this->debug) { // for debugging purposes.
|
|
|
1505 |
//expandPre($this->graph);
|
|
|
1506 |
//expandPre($this->y_data);
|
|
|
1507 |
//expandPre($this->x_data);
|
|
|
1508 |
//expandPre($this->parameter);
|
|
|
1509 |
} else {
|
|
|
1510 |
|
|
|
1511 |
$expiresSeconds = $this->parameter['seconds_to_live'];
|
|
|
1512 |
$expiresHours = $this->parameter['hours_to_live'];
|
|
|
1513 |
|
|
|
1514 |
if ($expiresHours || $expiresSeconds) {
|
|
|
1515 |
$now = mktime (date("H"),date("i"),date("s"),date("m"),date("d"),date("Y"));
|
|
|
1516 |
$expires = mktime (date("H")+$expiresHours,date("i"),date("s")+$expiresSeconds,date("m"),date("d"),date("Y"));
|
|
|
1517 |
$expiresGMT = gmdate('D, d M Y H:i:s', $expires).' GMT';
|
|
|
1518 |
$lastModifiedGMT = gmdate('D, d M Y H:i:s', $now).' GMT';
|
|
|
1519 |
|
|
|
1520 |
Header('Last-modified: '.$lastModifiedGMT);
|
|
|
1521 |
Header('Expires: '.$expiresGMT);
|
|
|
1522 |
}
|
|
|
1523 |
|
|
|
1524 |
if ($this->parameter['file_name'] == 'none') {
|
|
|
1525 |
switch ($this->parameter['output_format']) {
|
|
|
1526 |
case 'GIF':
|
|
|
1527 |
Header("Content-type: image/gif"); // GIF??. switch to PNG guys!!
|
|
|
1528 |
ImageGIF($this->image);
|
|
|
1529 |
break;
|
|
|
1530 |
case 'JPEG':
|
|
|
1531 |
Header("Content-type: image/jpeg"); // JPEG for line art??. included for completeness.
|
|
|
1532 |
ImageJPEG($this->image);
|
|
|
1533 |
break;
|
|
|
1534 |
default:
|
|
|
1535 |
Header("Content-type: image/png"); // preferred output format
|
|
|
1536 |
ImagePNG($this->image);
|
|
|
1537 |
break;
|
|
|
1538 |
}
|
|
|
1539 |
} else {
|
|
|
1540 |
switch ($this->parameter['output_format']) {
|
|
|
1541 |
case 'GIF':
|
|
|
1542 |
ImageGIF($this->image, $this->parameter['file_name'].'.gif');
|
|
|
1543 |
break;
|
|
|
1544 |
case 'JPEG':
|
|
|
1545 |
ImageJPEG($this->image, $this->parameter['file_name'].'.jpg');
|
|
|
1546 |
break;
|
|
|
1547 |
default:
|
|
|
1548 |
ImagePNG($this->image, $this->parameter['file_name'].'.png');
|
|
|
1549 |
break;
|
|
|
1550 |
}
|
|
|
1551 |
}
|
|
|
1552 |
|
|
|
1553 |
ImageDestroy($this->image);
|
|
|
1554 |
}
|
|
|
1555 |
} // function output
|
|
|
1556 |
|
|
|
1557 |
function init_variable(&$variable, $value, $default) {
|
|
|
1558 |
if (!empty($value)) $variable = $value;
|
|
|
1559 |
else if (isset($default)) $variable = $default;
|
|
|
1560 |
else unset($variable);
|
|
|
1561 |
}
|
|
|
1562 |
|
|
|
1563 |
// plot a point. options include square, circle, diamond, triangle, and dot. offset is used for drawing shadows.
|
|
|
1564 |
// for diamonds and triangles the size should be an even number to get nice look. if odd the points are crooked.
|
|
|
1565 |
function plot($x, $y, $type, $size, $colour, $offset) {
|
|
|
1566 |
//print("drawing point of type: $type, at offset: $offset");
|
|
|
1567 |
$u = $x + $offset;
|
|
|
1568 |
$v = $this->calculated['inner_border']['bottom'] - $y + $offset;
|
|
|
1569 |
$half = $size / 2;
|
|
|
1570 |
[$u, $v, $half] = [(int) round($u), (int) round($v), (int) round($half)];
|
|
|
1571 |
switch ($type) {
|
|
|
1572 |
case 'square':
|
|
|
1573 |
ImageFilledRectangle($this->image, $u-$half, $v-$half, $u+$half, $v+$half, $this->colour[$colour]);
|
|
|
1574 |
break;
|
|
|
1575 |
case 'square-open':
|
|
|
1576 |
ImageRectangle($this->image, $u-$half, $v-$half, $u+$half, $v+$half, $this->colour[$colour]);
|
|
|
1577 |
break;
|
|
|
1578 |
case 'circle':
|
|
|
1579 |
ImageArc($this->image, $u, $v, $size, $size, 0, 360, $this->colour[$colour]);
|
|
|
1580 |
ImageFillToBorder($this->image, $u, $v, $this->colour[$colour], $this->colour[$colour]);
|
|
|
1581 |
break;
|
|
|
1582 |
case 'circle-open':
|
|
|
1583 |
ImageArc($this->image, $u, $v, $size, $size, 0, 360, $this->colour[$colour]);
|
|
|
1584 |
break;
|
|
|
1585 |
case 'diamond':
|
|
|
1586 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1587 |
ImageFilledPolygon($this->image, array($u, $v - $half, $u + $half, $v, $u, $v + $half, $u - $half, $v), $this->colour[$colour]);
|
|
|
1588 |
} else {
|
|
|
1589 |
ImageFilledPolygon($this->image, array($u, $v - $half, $u + $half, $v, $u, $v + $half, $u - $half, $v), 4, $this->colour[$colour]);
|
|
|
1590 |
}
|
|
|
1591 |
break;
|
|
|
1592 |
case 'diamond-open':
|
|
|
1593 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1594 |
ImagePolygon($this->image, array($u, $v - $half, $u + $half, $v, $u, $v + $half, $u - $half, $v), $this->colour[$colour]);
|
|
|
1595 |
} else {
|
|
|
1596 |
ImagePolygon($this->image, array($u, $v - $half, $u + $half, $v, $u, $v + $half, $u - $half, $v), 4, $this->colour[$colour]);
|
|
|
1597 |
}
|
|
|
1598 |
break;
|
|
|
1599 |
case 'triangle':
|
|
|
1600 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1601 |
ImageFilledPolygon($this->image, array($u, $v - $half, $u + $half, $v + $half, $u - $half, $v + $half), $this->colour[$colour]);
|
|
|
1602 |
} else {
|
|
|
1603 |
ImageFilledPolygon($this->image, array($u, $v - $half, $u + $half, $v + $half, $u - $half, $v + $half), 3, $this->colour[$colour]);
|
|
|
1604 |
}
|
|
|
1605 |
break;
|
|
|
1606 |
case 'triangle-open':
|
|
|
1607 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1608 |
ImagePolygon($this->image, array($u, $v - $half, $u + $half, $v + $half, $u - $half, $v + $half), $this->colour[$colour]);
|
|
|
1609 |
} else {
|
|
|
1610 |
ImagePolygon($this->image, array($u, $v - $half, $u + $half, $v + $half, $u - $half, $v + $half), 3, $this->colour[$colour]);
|
|
|
1611 |
}
|
|
|
1612 |
break;
|
|
|
1613 |
case 'dot':
|
|
|
1614 |
ImageSetPixel($this->image, $u, $v, $this->colour[$colour]);
|
|
|
1615 |
break;
|
|
|
1616 |
}
|
|
|
1617 |
}
|
|
|
1618 |
|
|
|
1619 |
function bar($x, $y, $type, $size, $colour, $offset, $index, $yoffset) {
|
|
|
1620 |
$index_offset = $this->calculated['bar_offset_index'][$index];
|
|
|
1621 |
if ( $yoffset ) {
|
|
|
1622 |
$bar_offsetx = 0;
|
|
|
1623 |
} else {
|
|
|
1624 |
$bar_offsetx = $this->calculated['bar_offset_x'][$index_offset];
|
|
|
1625 |
}
|
|
|
1626 |
//$this->dbug("drawing bar at offset = $offset : index = $index: bar_offsetx = $bar_offsetx");
|
|
|
1627 |
|
|
|
1628 |
$span = ($this->calculated['bar_width'] * $size) / 2;
|
|
|
1629 |
$x_left = $x + $bar_offsetx - $span;
|
|
|
1630 |
$x_right = $x + $bar_offsetx + $span;
|
|
|
1631 |
|
|
|
1632 |
if ($this->parameter['zero_axis'] != 'none') {
|
|
|
1633 |
$zero = $this->calculated['zero_axis'];
|
|
|
1634 |
if ($this->parameter['shadow_below_axis'] ) $zero += $offset;
|
|
|
1635 |
$u_left = (int) round($x_left + $offset);
|
|
|
1636 |
$u_right = (int) round($x_right + $offset - 1);
|
|
|
1637 |
$v = $this->calculated['boundary_box']['bottom'] - $y + $offset;
|
|
|
1638 |
|
|
|
1639 |
if ($v > $zero) {
|
|
|
1640 |
$top = $zero +1;
|
|
|
1641 |
$bottom = $v;
|
|
|
1642 |
} else {
|
|
|
1643 |
$top = $v;
|
|
|
1644 |
$bottom = $zero - 1;
|
|
|
1645 |
}
|
|
|
1646 |
|
|
|
1647 |
[$top, $bottom] = [(int) round($top), (int) round($bottom)];
|
|
|
1648 |
|
|
|
1649 |
switch ($type) {
|
|
|
1650 |
case 'open':
|
|
|
1651 |
if ($v > $zero)
|
|
|
1652 |
ImageRectangle($this->image, $u_left, $bottom, $u_right, $bottom, $this->colour[$colour]);
|
|
|
1653 |
else
|
|
|
1654 |
ImageRectangle($this->image, $u_left, $top, $u_right, $top, $this->colour[$colour]);
|
|
|
1655 |
ImageRectangle($this->image, $u_left, $top, $u_left, $bottom, $this->colour[$colour]);
|
|
|
1656 |
ImageRectangle($this->image, $u_right, $top, $u_right, $bottom, $this->colour[$colour]);
|
|
|
1657 |
break;
|
|
|
1658 |
case 'fill':
|
|
|
1659 |
ImageFilledRectangle($this->image, $u_left, $top, $u_right, $bottom, $this->colour[$colour]);
|
|
|
1660 |
break;
|
|
|
1661 |
}
|
|
|
1662 |
|
|
|
1663 |
} else {
|
|
|
1664 |
|
|
|
1665 |
$bottom = $this->calculated['boundary_box']['bottom'];
|
|
|
1666 |
if ($this->parameter['shadow_below_axis'] ) $bottom += $offset;
|
|
|
1667 |
if ($this->parameter['inner_border'] != 'none') $bottom -= 1; // 1 pixel above bottom if border is to be drawn.
|
|
|
1668 |
$u_left = (int) round($x_left + $offset);
|
|
|
1669 |
$u_right = (int) round($x_right + $offset - 1);
|
|
|
1670 |
$v = $this->calculated['boundary_box']['bottom'] - $y + $offset;
|
|
|
1671 |
|
|
|
1672 |
// Moodle addition, plus the function parameter yoffset
|
|
|
1673 |
if ($yoffset) { // Moodle
|
|
|
1674 |
$yoffset = $yoffset - round(($bottom - $v) / 2.0); // Moodle
|
|
|
1675 |
$bottom -= $yoffset; // Moodle
|
|
|
1676 |
$v -= $yoffset; // Moodle
|
|
|
1677 |
} // Moodle
|
|
|
1678 |
|
|
|
1679 |
[$v, $bottom] = [(int) round($v), (int) round($bottom)];
|
|
|
1680 |
|
|
|
1681 |
switch ($type) {
|
|
|
1682 |
case 'open':
|
|
|
1683 |
ImageRectangle($this->image, $u_left, $v, $u_right, $bottom, $this->colour[$colour]);
|
|
|
1684 |
break;
|
|
|
1685 |
case 'fill':
|
|
|
1686 |
ImageFilledRectangle($this->image, $u_left, $v, $u_right, $bottom, $this->colour[$colour]);
|
|
|
1687 |
break;
|
|
|
1688 |
}
|
|
|
1689 |
}
|
|
|
1690 |
}
|
|
|
1691 |
|
|
|
1692 |
function area($x_start, $y_start, $x_end, $y_end, $type, $colour, $offset) {
|
|
|
1693 |
//dbug("drawing area type: $type, at offset: $offset");
|
|
|
1694 |
if ($this->parameter['zero_axis'] != 'none') {
|
|
|
1695 |
$bottom = $this->calculated['boundary_box']['bottom'];
|
|
|
1696 |
$zero = $this->calculated['zero_axis'];
|
|
|
1697 |
if ($this->parameter['shadow_below_axis'] ) $zero += $offset;
|
|
|
1698 |
$u_start = $x_start + $offset;
|
|
|
1699 |
$u_end = $x_end + $offset;
|
|
|
1700 |
$v_start = $bottom - $y_start + $offset;
|
|
|
1701 |
$v_end = $bottom - $y_end + $offset;
|
|
|
1702 |
switch ($type) {
|
|
|
1703 |
case 'fill':
|
|
|
1704 |
// draw it this way 'cos the FilledPolygon routine seems a bit buggy.
|
|
|
1705 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1706 |
ImageFilledPolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $zero, $u_start, $zero), $this->colour[$colour]);
|
|
|
1707 |
ImagePolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $zero, $u_start, $zero), $this->colour[$colour]);
|
|
|
1708 |
} else {
|
|
|
1709 |
ImageFilledPolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $zero, $u_start, $zero), 4, $this->colour[$colour]);
|
|
|
1710 |
ImagePolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $zero, $u_start, $zero), 4, $this->colour[$colour]);
|
|
|
1711 |
}
|
|
|
1712 |
break;
|
|
|
1713 |
case 'open':
|
|
|
1714 |
ImageLine($this->image, $u_start, $v_start, $u_end, $v_end, $this->colour[$colour]);
|
|
|
1715 |
ImageLine($this->image, $u_start, $v_start, $u_start, $zero, $this->colour[$colour]);
|
|
|
1716 |
ImageLine($this->image, $u_end, $v_end, $u_end, $zero, $this->colour[$colour]);
|
|
|
1717 |
break;
|
|
|
1718 |
}
|
|
|
1719 |
} else {
|
|
|
1720 |
$bottom = $this->calculated['boundary_box']['bottom'];
|
|
|
1721 |
$u_start = $x_start + $offset;
|
|
|
1722 |
$u_end = $x_end + $offset;
|
|
|
1723 |
$v_start = $bottom - $y_start + $offset;
|
|
|
1724 |
$v_end = $bottom - $y_end + $offset;
|
|
|
1725 |
|
|
|
1726 |
if ($this->parameter['shadow_below_axis'] ) $bottom += $offset;
|
|
|
1727 |
if ($this->parameter['inner_border'] != 'none') $bottom -= 1; // 1 pixel above bottom if border is to be drawn.
|
|
|
1728 |
switch ($type) {
|
|
|
1729 |
case 'fill':
|
|
|
1730 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1731 |
ImageFilledPolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $bottom, $u_start, $bottom), $this->colour[$colour]);
|
|
|
1732 |
} else {
|
|
|
1733 |
ImageFilledPolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $bottom, $u_start, $bottom), 4, $this->colour[$colour]);
|
|
|
1734 |
}
|
|
|
1735 |
break;
|
|
|
1736 |
case 'open':
|
|
|
1737 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1738 |
ImagePolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $bottom, $u_start, $bottom), $this->colour[$colour]);
|
|
|
1739 |
} else {
|
|
|
1740 |
ImagePolygon($this->image, array($u_start, $v_start, $u_end, $v_end, $u_end, $bottom, $u_start, $bottom), 4, $this->colour[$colour]);
|
|
|
1741 |
}
|
|
|
1742 |
break;
|
|
|
1743 |
}
|
|
|
1744 |
}
|
|
|
1745 |
}
|
|
|
1746 |
|
|
|
1747 |
function line($x_start, $y_start, $x_end, $y_end, $type, $brush_type, $brush_size, $colour, $offset) {
|
|
|
1748 |
//dbug("drawing line of type: $type, at offset: $offset");
|
|
|
1749 |
$u_start = (int) round($x_start + $offset);
|
|
|
1750 |
$v_start = (int) round($this->calculated['boundary_box']['bottom'] - $y_start + $offset);
|
|
|
1751 |
$u_end = (int) round($x_end + $offset);
|
|
|
1752 |
$v_end = (int) round($this->calculated['boundary_box']['bottom'] - $y_end + $offset);
|
|
|
1753 |
|
|
|
1754 |
switch ($type) {
|
|
|
1755 |
case 'brush':
|
|
|
1756 |
$this->draw_brush_line($u_start, $v_start, $u_end, $v_end, $brush_size, $brush_type, $colour);
|
|
|
1757 |
break;
|
|
|
1758 |
case 'line' :
|
|
|
1759 |
ImageLine($this->image, $u_start, $v_start, $u_end, $v_end, $this->colour[$colour]);
|
|
|
1760 |
break;
|
|
|
1761 |
case 'dash':
|
|
|
1762 |
$this->image_dashed_line($this->image, $u_start, $v_start, $u_end, $v_end, $this->colour[$colour]); // Moodle
|
|
|
1763 |
break;
|
|
|
1764 |
}
|
|
|
1765 |
}
|
|
|
1766 |
|
|
|
1767 |
// function to draw line. would prefer to use gdBrush but this is not supported yet.
|
|
|
1768 |
function draw_brush_line($x0, $y0, $x1, $y1, $size, $type, $colour) {
|
|
|
1769 |
//$this->dbug("line: $x0, $y0, $x1, $y1");
|
|
|
1770 |
$dy = $y1 - $y0;
|
|
|
1771 |
$dx = $x1 - $x0;
|
|
|
1772 |
$t = 0;
|
|
|
1773 |
$watchdog = 1024; // precaution to prevent infinite loops.
|
|
|
1774 |
|
|
|
1775 |
$this->draw_brush($x0, $y0, $size, $type, $colour);
|
|
|
1776 |
if (abs($dx) > abs($dy)) { // slope < 1
|
|
|
1777 |
//$this->dbug("slope < 1");
|
|
|
1778 |
$m = $dy / $dx; // compute slope
|
|
|
1779 |
$t += $y0;
|
|
|
1780 |
$dx = ($dx < 0) ? -1 : 1;
|
|
|
1781 |
$m *= $dx;
|
|
|
1782 |
while (round($x0) != round($x1)) {
|
|
|
1783 |
if (!$watchdog--) break;
|
|
|
1784 |
$x0 += $dx; // step to next x value
|
|
|
1785 |
$t += $m; // add slope to y value
|
|
|
1786 |
$y = round($t);
|
|
|
1787 |
//$this->dbug("x0=$x0, x1=$x1, y=$y watchdog=$watchdog");
|
|
|
1788 |
$this->draw_brush($x0, $y, $size, $type, $colour);
|
|
|
1789 |
|
|
|
1790 |
}
|
|
|
1791 |
} else { // slope >= 1
|
|
|
1792 |
//$this->dbug("slope >= 1");
|
|
|
1793 |
$m = $dx / $dy; // compute slope
|
|
|
1794 |
$t += $x0;
|
|
|
1795 |
$dy = ($dy < 0) ? -1 : 1;
|
|
|
1796 |
$m *= $dy;
|
|
|
1797 |
while (round($y0) != round($y1)) {
|
|
|
1798 |
if (!$watchdog--) break;
|
|
|
1799 |
$y0 += $dy; // step to next y value
|
|
|
1800 |
$t += $m; // add slope to x value
|
|
|
1801 |
$x = round($t);
|
|
|
1802 |
//$this->dbug("x=$x, y0=$y0, y1=$y1 watchdog=$watchdog");
|
|
|
1803 |
$this->draw_brush($x, $y0, $size, $type, $colour);
|
|
|
1804 |
|
|
|
1805 |
}
|
|
|
1806 |
}
|
|
|
1807 |
}
|
|
|
1808 |
|
|
|
1809 |
function draw_brush($x, $y, $size, $type, $colour) {
|
|
|
1810 |
$x = round($x);
|
|
|
1811 |
$y = round($y);
|
|
|
1812 |
$half = round($size / 2);
|
|
|
1813 |
switch ($type) {
|
|
|
1814 |
case 'circle':
|
|
|
1815 |
ImageArc($this->image, $x, $y, $size, $size, 0, 360, $this->colour[$colour]);
|
|
|
1816 |
ImageFillToBorder($this->image, $x, $y, $this->colour[$colour], $this->colour[$colour]);
|
|
|
1817 |
break;
|
|
|
1818 |
case 'square':
|
|
|
1819 |
ImageFilledRectangle($this->image, $x-$half, $y-$half, $x+$half, $y+$half, $this->colour[$colour]);
|
|
|
1820 |
break;
|
|
|
1821 |
case 'vertical':
|
|
|
1822 |
ImageFilledRectangle($this->image, $x, $y-$half, $x+1, $y+$half, $this->colour[$colour]);
|
|
|
1823 |
break;
|
|
|
1824 |
case 'horizontal':
|
|
|
1825 |
ImageFilledRectangle($this->image, $x-$half, $y, $x+$half, $y+1, $this->colour[$colour]);
|
|
|
1826 |
break;
|
|
|
1827 |
case 'slash':
|
|
|
1828 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1829 |
ImageFilledPolygon($this->image, array(
|
|
|
1830 |
$x + $half, $y - $half,
|
|
|
1831 |
$x + $half + 1, $y - $half,
|
|
|
1832 |
$x - $half + 1, $y + $half,
|
|
|
1833 |
$x - $half, $y + $half
|
|
|
1834 |
), $this->colour[$colour]);
|
|
|
1835 |
} else {
|
|
|
1836 |
ImageFilledPolygon($this->image, array(
|
|
|
1837 |
$x + $half, $y - $half,
|
|
|
1838 |
$x + $half + 1, $y - $half,
|
|
|
1839 |
$x - $half + 1, $y + $half,
|
|
|
1840 |
$x - $half, $y + $half
|
|
|
1841 |
), 4, $this->colour[$colour]);
|
|
|
1842 |
}
|
|
|
1843 |
break;
|
|
|
1844 |
case 'backslash':
|
|
|
1845 |
if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
|
|
|
1846 |
ImageFilledPolygon($this->image, array(
|
|
|
1847 |
$x - $half, $y - $half,
|
|
|
1848 |
$x - $half + 1, $y - $half,
|
|
|
1849 |
$x + $half + 1, $y + $half,
|
|
|
1850 |
$x + $half, $y + $half
|
|
|
1851 |
), $this->colour[$colour]);
|
|
|
1852 |
} else {
|
|
|
1853 |
ImageFilledPolygon($this->image, array(
|
|
|
1854 |
$x - $half, $y-$half,
|
|
|
1855 |
$x - $half + 1, $y - $half,
|
|
|
1856 |
$x + $half + 1, $y + $half,
|
|
|
1857 |
$x + $half, $y + $half
|
|
|
1858 |
), 4, $this->colour[$colour]);
|
|
|
1859 |
}
|
|
|
1860 |
break;
|
|
|
1861 |
default:
|
|
|
1862 |
@eval($type); // user can create own brush script.
|
|
|
1863 |
}
|
|
|
1864 |
}
|
|
|
1865 |
|
|
|
1866 |
/**
|
|
|
1867 |
* Moodle.
|
|
|
1868 |
*
|
|
|
1869 |
* A replacement for deprecated ImageDashedLine function.
|
|
|
1870 |
*
|
|
|
1871 |
* @param resource|GdImage $image
|
|
|
1872 |
* @param int $x1 — x-coordinate for first point.
|
|
|
1873 |
* @param int $y1 — y-coordinate for first point.
|
|
|
1874 |
* @param int $x2 — x-coordinate for second point.
|
|
|
1875 |
* @param int $y2 — y-coordinate for second point.
|
|
|
1876 |
* @param int $color
|
|
|
1877 |
* @return void
|
|
|
1878 |
*/
|
|
|
1879 |
private function image_dashed_line($image, $x1, $y1, $x2, $y2, $colour): void {
|
|
|
1880 |
// Create a dashed style.
|
|
|
1881 |
$style = array(
|
|
|
1882 |
$colour,
|
|
|
1883 |
$colour,
|
|
|
1884 |
$colour,
|
|
|
1885 |
$colour,
|
|
|
1886 |
IMG_COLOR_TRANSPARENT,
|
|
|
1887 |
IMG_COLOR_TRANSPARENT,
|
|
|
1888 |
IMG_COLOR_TRANSPARENT,
|
|
|
1889 |
IMG_COLOR_TRANSPARENT
|
|
|
1890 |
);
|
|
|
1891 |
imagesetstyle($image, $style);
|
|
|
1892 |
|
|
|
1893 |
// Apply the dashed style.
|
|
|
1894 |
imageline($image, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
|
|
|
1895 |
}
|
|
|
1896 |
|
|
|
1897 |
} // class graph
|