KumiSystems/moodle-mod_htmlcert
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Introduced a new form element for selecting a colour on the customcert customisation page

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This commit is contained in:
Mark Nelson 2013-02-24 23:41:33 +08:00
parent 0c66a5242f
commit 52fbc108a7
9 changed files with 169 additions and 43 deletions
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113
elements/element.class.php
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@ -15,7 +15,6 @@
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* The base class for the customcert elements.
*
@ -60,7 +59,7 @@ class customcert_element_base {
$data->element = $element;
$data->font = 'Times-Roman';
$data->size = '12';
$data->colour = 'FFFFFF';
$data->colour = '#FFFFFF';
$data->posx = '250';
$data->posy = '250';
$data->timecreated = time();
@ -93,17 +92,17 @@ class customcert_element_base {
// Commonly used string.
$strrequired = get_string('required');
// The common group of elements.
// The common elements.
$mform->addElement('select', 'font_' . $id, get_string('font', 'customcert'), customcert_get_fonts());
$mform->addElement('select', 'size_' . $id, get_string('fontsize', 'customcert'), customcert_get_font_sizes());
$mform->addELement('text', 'colour_' . $id, get_string('fontcolour', 'customcert'), array('size' => 10, 'maxlength' => 6));
$mform->addElement('customcert_colourpicker', 'colour_' . $id, get_string('fontcolour', 'customcert'));
$mform->addElement('text', 'posx_' . $id, get_string('posx', 'customcert'), array('size' => 10));
$mform->addElement('text', 'posy_' . $id, get_string('posy', 'customcert'), array('size' => 10));
// Set the types of these elements.
$mform->setType('font_' . $id, PARAM_TEXT);
$mform->setType('size_' . $id, PARAM_INT);
$mform->setType('colour_' . $id, PARAM_RAW); // Need to validate this is a hexadecimal value.
$mform->setType('colour_' . $id, PARAM_RAW); // Need to validate that this is a valid colour.
$mform->setType('posx_' . $id, PARAM_INT);
$mform->setType('posy_' . $id, PARAM_INT);
@ -140,42 +139,27 @@ class customcert_element_base {
// The identifier.
$id = $this->element->id;
// Get the group name.
$group = 'elementfieldgroup_' . $id;
// Get the colour.
// Validate the colour.
$colour = 'colour_' . $id;
$colour = $data[$colour];
$colour = ltrim($colour, "#");
// Check if colour is not a valid hexadecimal value.
if(!preg_match("/[0-9A-F]{6}/i", $colour)) {
$errors[$group] = get_string('invalidcolour', 'customcert');
$colourdata = $data[$colour];
if (!$this->validate_colour($colourdata)) {
$errors[$colour] = get_string('invalidcolour', 'customcert');
}
// Get position X.
$posx = 'posx_' . $id;
$posx = $data[$posx];
$posxdata = $data[$posx];
// Check if posx is not numeric or less than 0.
if ((!is_numeric($posx)) || ($posx < 0)) {
if (!empty($errors[$group])) {
$errors[$group] .= "<br />";
$errors[$group] .= get_string('invalidposition', 'customcert', 'X');
} else {
$errors[$group] = get_string('invalidposition', 'customcert', 'X');
}
if ((!is_numeric($posxdata)) || ($posxdata < 0)) {
$errors[$posx] = get_string('invalidposition', 'customcert', 'X');
}
// Get position Y.
$posy = 'posy_' . $id;
$posy = $data[$posy];
$posydata = $data[$posy];
// Check if posy is not numeric or less than 0.
if ((!is_numeric($posy)) || ($posy < 0)) {
if (!empty($errors[$group])) {
$errors[$group] .= "<br />";
$errors[$group] .= get_string('invalidposition', 'customcert', 'Y');
} else {
$errors[$group] = get_string('invalidposition', 'customcert', 'Y');
}
if ((!is_numeric($posydata)) || ($posydata < 0)) {
$errors[$posy] = get_string('invalidposition', 'customcert', 'Y');
}
return $errors;
@ -207,7 +191,7 @@ class customcert_element_base {
$element->data = $datainfo;
$element->font = (!empty($data->$font)) ? $data->$font : null;
$element->size = (!empty($data->$size)) ? $data->$size : null;
$element->colour = (!empty($data->$colour)) ? ltrim($data->$colour, "#") : null;
$element->colour = (!empty($data->$colour)) ? $data->$colour : null;
$element->posx = (!empty($data->$posx)) ? $data->$posx : null;
$element->posy = (!empty($data->$posy)) ? $data->$posy : null;
@ -248,4 +232,69 @@ class customcert_element_base {
return $DB->delete_records('customcert_elements', array('id' => $this->element->id));
}
}
/**
* Validates the colour selected.
*
* @param string $data
* @return string|false
*/
protected function validate_colour($colour) {
/**
* List of valid HTML colour names
*
* @var array
*/
$colournames = array(
'aliceblue', 'antiquewhite', 'aqua', 'aquamarine', 'azure',
'beige', 'bisque', 'black', 'blanchedalmond', 'blue',
'blueviolet', 'brown', 'burlywood', 'cadetblue', 'chartreuse',
'chocolate', 'coral', 'cornflowerblue', 'cornsilk', 'crimson',
'cyan', 'darkblue', 'darkcyan', 'darkgoldenrod', 'darkgray',
'darkgrey', 'darkgreen', 'darkkhaki', 'darkmagenta',
'darkolivegreen', 'darkorange', 'darkorchid', 'darkred',
'darksalmon', 'darkseagreen', 'darkslateblue', 'darkslategray',
'darkslategrey', 'darkturquoise', 'darkviolet', 'deeppink',
'deepskyblue', 'dimgray', 'dimgrey', 'dodgerblue', 'firebrick',
'floralwhite', 'forestgreen', 'fuchsia', 'gainsboro',
'ghostwhite', 'gold', 'goldenrod', 'gray', 'grey', 'green',
'greenyellow', 'honeydew', 'hotpink', 'indianred', 'indigo',
'ivory', 'khaki', 'lavender', 'lavenderblush', 'lawngreen',
'lemonchiffon', 'lightblue', 'lightcoral', 'lightcyan',
'lightgoldenrodyellow', 'lightgray', 'lightgrey', 'lightgreen',
'lightpink', 'lightsalmon', 'lightseagreen', 'lightskyblue',
'lightslategray', 'lightslategrey', 'lightsteelblue', 'lightyellow',
'lime', 'limegreen', 'linen', 'magenta', 'maroon',
'mediumaquamarine', 'mediumblue', 'mediumorchid', 'mediumpurple',
'mediumseagreen', 'mediumslateblue', 'mediumspringgreen',
'mediumturquoise', 'mediumvioletred', 'midnightblue', 'mintcream',
'mistyrose', 'moccasin', 'navajowhite', 'navy', 'oldlace', 'olive',
'olivedrab', 'orange', 'orangered', 'orchid', 'palegoldenrod',
'palegreen', 'paleturquoise', 'palevioletred', 'papayawhip',
'peachpuff', 'peru', 'pink', 'plum', 'powderblue', 'purple', 'red',
'rosybrown', 'royalblue', 'saddlebrown', 'salmon', 'sandybrown',
'seagreen', 'seashell', 'sienna', 'silver', 'skyblue', 'slateblue',
'slategray', 'slategrey', 'snow', 'springgreen', 'steelblue', 'tan',
'teal', 'thistle', 'tomato', 'turquoise', 'violet', 'wheat', 'white',
'whitesmoke', 'yellow', 'yellowgreen'
);
if (preg_match('/^#?([[:xdigit:]]{3}){1,2}$/', $colour)) {
return true;
} else if (in_array(strtolower($colour), $colournames)) {
return true;
} else if (preg_match('/rgb\(\d{0,3}%?\, ?\d{0,3}%?, ?\d{0,3}%?\)/i', $colour)) {
return true;
} else if (preg_match('/rgba\(\d{0,3}%?\, ?\d{0,3}%?, ?\d{0,3}%?\, ?\d(\.\d)?\)/i', $colour)) {
return true;
} else if (preg_match('/hsl\(\d{0,3}\, ?\d{0,3}%, ?\d{0,3}%\)/i', $colour)) {
return true;
} else if (preg_match('/hsla\(\d{0,3}\, ?\d{0,3}%,\d{0,3}%\, ?\d(\.\d)?\)/i', $colour)) {
return true;
} else if (($colour == 'transparent') || ($colour == 'currentColor') || ($colour == 'inherit')) {
return true;
} else {
return false;
}
}
}