moodle/moodle
3
0
Fork 0
mirror of https://github.com/moodle/moodle.git synced 2025-08-05 00:46:50 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

implemented a provisional hack by roger to avoid division by zero reported in bug 1231.

Browse source
This commit is contained in:
gustav_delius 2004-05-08 21:27:33 +00:00
parent c12007857b
commit 78d7fa79cf
1 changed files with 45 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

87
lib/graphlib.php
View file

@ -712,6 +712,9 @@ function init_data() {
$extraTick = 2 * $this->parameter['x_offset']; // extra tick to account for padding
$numTicks = $this->calculated['x_axis']['num_ticks'] - 1; // number of x ticks
// Hack by rodger to avoid division by zero, see bug 1231
if ($numTicks==0) $numTicks=1;
$this->calculated['x_axis']['step'] = $width / ($numTicks + $extraTick);
$widthPlot = $width - ($this->calculated['x_axis']['step'] * $extraTick);
$this->calculated['x_axis']['step'] = $widthPlot / $numTicks;
@ -1325,12 +1328,12 @@ function update_boundaryBox(&$boundaryBox, $coords) {
}
function get_null_size() {
return array('width' => 0,
'height' => 0,
'offsetX' => 0,
'offsetY' => 0,
//'fontHeight' => 0
);
return array('width' => 0,
'height' => 0,
'offsetX' => 0,
'offsetY' => 0,
//'fontHeight' => 0
);
}
function get_boundaryBox($message) {
@ -1343,16 +1346,16 @@ function get_boundaryBox($message) {
//expandPre($message);
// get font size
$bounds = ImageTTFBBox($points, $angle, $font, "W");
if ($angle < 0) {
$fontHeight = abs($bounds[7]-$bounds[1]);
} else if ($angle > 0) {
$fontHeight = abs($bounds[1]-$bounds[7]);
} else {
$fontHeight = abs($bounds[7]-$bounds[1]);
}
$bounds = ImageTTFBBox($points, $angle, $font, "W");
if ($angle < 0) {
$fontHeight = abs($bounds[7]-$bounds[1]);
} else if ($angle > 0) {
$fontHeight = abs($bounds[1]-$bounds[7]);
} else {
$fontHeight = abs($bounds[7]-$bounds[1]);
}
// get boundary box and offsets for printing at an angle
// get boundary box and offsets for printing at an angle
if ($this->parameter['lang_decode']) { // Moodle addition
include_once($this->parameter['lang_decode']);
$text = lang_decode($text);
@ -1360,34 +1363,34 @@ function get_boundaryBox($message) {
} else if ($this->parameter['lang_transcode']) {
$text = iconv($this->parameter['lang_transcode'], 'UTF-8', $text);
}
$bounds = ImageTTFBBox($points, $angle, $font, $text);
$bounds = ImageTTFBBox($points, $angle, $font, $text);
if ($angle < 0) {
$width = abs($bounds[4]-$bounds[0]);
$height = abs($bounds[3]-$bounds[7]);
$offsetY = abs($bounds[3]-$bounds[1]);
$offsetX = 0;
if ($angle < 0) {
$width = abs($bounds[4]-$bounds[0]);
$height = abs($bounds[3]-$bounds[7]);
$offsetY = abs($bounds[3]-$bounds[1]);
$offsetX = 0;
} else if ($angle > 0) {
$width = abs($bounds[2]-$bounds[6]);
$height = abs($bounds[1]-$bounds[5]);
$offsetY = 0;
$offsetX = abs($bounds[0]-$bounds[6]);
} else if ($angle > 0) {
$width = abs($bounds[2]-$bounds[6]);
$height = abs($bounds[1]-$bounds[5]);
$offsetY = 0;
$offsetX = abs($bounds[0]-$bounds[6]);
} else {
$width = abs($bounds[4]-$bounds[6]);
$height = abs($bounds[7]-$bounds[1]);
$offsetY = 0;
$offsetX = 0;
}
} else {
$width = abs($bounds[4]-$bounds[6]);
$height = abs($bounds[7]-$bounds[1]);
$offsetY = 0;
$offsetX = 0;
}
//return values
return array('width' => $width,
'height' => $height,
'offsetX' => $offsetX,
'offsetY' => $offsetY,
//'fontHeight' => $fontHeight
);
//return values
return array('width' => $width,
'height' => $height,
'offsetX' => $offsetX,
'offsetY' => $offsetY,
//'fontHeight' => $fontHeight
);
}
function draw_rectangle($border, $colour, $type) {
@ -1517,9 +1520,9 @@ function output() {
} // function output
function init_variable(&$variable, $value, $default) {
if (!empty($value)) $variable = $value;
else if (isset($default)) $variable = $default;
else unset($variable);
if (!empty($value)) $variable = $value;
else if (isset($default)) $variable = $default;
else unset($variable);
}
// plot a point. options include square, circle, diamond, triangle, and dot. offset is used for drawing shadows.