| 1 |
<?php
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| 2 |
// $ID: $
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| 3 |
/**
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| 4 |
* Helper functions for the text2canvas action for imagecache
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*
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*/
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| 7 |
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/**
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| 9 |
* Implementation of imagecache_hook_form()
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*
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| 11 |
* Settings for preparing a canvas.
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*
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* @param $action array of settings for this action
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* @return a form definition
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*/
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function canvasactions_definecanvas_form($action) {
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| 17 |
$form = array(
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'RGB' => imagecache_rgb_form($action['RGB']),
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| 19 |
'help' => array(
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'#type' => 'markup',
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| 21 |
'#value' => '<p>'. t('Enter no color value for transparent. This will have the effect of adding clear margins around the image.') .'</p>',
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),
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'under' => array(
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'#type' => 'checkbox',
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'#title' => t('Resize canvas under image (possibly cropping)'),
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'#default_value' => $action['under'],
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'#description' => t('If not set, this will create a solid flat layer, probably totally obscuring the source image'),
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),
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);
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| 30 |
$form['info'] = array('#value' => t('Enter values in ONLY ONE of the below options. Either exact or relative. Most values are optional - you can adjust only one dimension as needed. If no useful values are set, the current base image size will be used.'));
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$form['exact'] = array(
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'#type' => 'fieldset',
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'#collapsible' => true,
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'#title' => 'Exact size',
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'help' => array(
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'#type' => 'markup',
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'#value' => '<p>'. t('Set the canvas to a precise size, possibly cropping the image. Use to start with a known size.'). '</p>',
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),
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'width' => array(
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'#type' => 'textfield',
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'#title' => t('Width'),
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'#default_value' => $action['exact']['width'],
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'#description' => t('Enter a value in pixels or percent'),
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'#size' => 5,
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),
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'height' => array(
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'#type' => 'textfield',
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'#title' => t('Height'),
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'#default_value' => $action['exact']['height'],
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'#description' => t('Enter a value in pixels or percent'),
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'#size' => 5,
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),
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);
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$form['exact'] = array_merge($form['exact'], canvasactions_pos_form($action['exact']));
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if(! $action['exact']['width'] && !$action['exact']['height']) {
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$form['exact']['#collapsed'] = true;
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}
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$form['relative'] = array(
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'#type' => 'fieldset',
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'#collapsible' => true,
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'#title' => t('Relative size'),
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'help' => array(
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'#type' => 'markup',
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'#value' => '<p>'. t('Set the canvas to a relative size, based on the current image dimensions. Use to add simple borders or expand by a fixed amount. Negative values may crop the image.') .'</p>',
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),
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'leftdiff' => array(
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'#type' => 'textfield',
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'#title' => t('left difference'),
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'#default_value' => $action['relative']['leftdiff'],
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'#size' => 6,
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'#description' => t('Enter an offset in pixels.'),
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),
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'rightdiff' => array(
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'#type' => 'textfield',
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'#title' => t('right difference'),
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'#default_value' => $action['relative']['rightdiff'],
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'#size' => 6,
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'#description' => t('Enter an offset in pixels.'),
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),
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'topdiff' => array(
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'#type' => 'textfield',
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'#title' => t('top difference'),
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'#default_value' => $action['relative']['topdiff'] ,
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'#size' => 6,
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'#description' => t('Enter an offset in pixels.'),
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),
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'bottomdiff' => array(
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'#type' => 'textfield',
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'#title' => t('bottom difference'),
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'#default_value' => $action['relative']['bottomdiff'],
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'#size' => 6,
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'#description' => t('Enter an offset in pixels.'),
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),
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);
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if(! $action['relative']['leftdiff'] && !$action['relative']['rightdiff'] && !$action['relative']['topdiff'] && !$action['relative']['bottomdiff']) {
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$form['relative']['#collapsed'] = true;
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}
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$form['#submit'][] = 'canvasactions_definecanvas_form_submit';
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return $form;
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}
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/**
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* Implementation of theme_hook() for imagecache_ui.module
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*/
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function theme_canvasactions_definecanvas($element) {
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$action = $element['#value'];
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if ($action['exact']['width'] || $action['exact']['width']) {
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$output = $action['exact']['width'] .'x'. $action['exact']['height'];
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}
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else {
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$output = ' left:'. $action['relative']['leftdiff'];
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$output .= ' right:'. $action['relative']['rightdiff'];
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$output .= ' top:'. $action['relative']['topdiff'];
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$output .= ' bottom:'. $action['relative']['bottomdiff'];
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}
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$output .= theme_canvasactions_rgb($action['RGB']);
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return $output ;
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}
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/**
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* Implementation of hook_image()
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*
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* Creates a solid background canvas
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*
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* Process the imagecache action on the passed image
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*
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* @param $image
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* array defining an image file, including :
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*
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* $image- >source as the filename,
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*
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* $image->info array
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*
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* $image->res handle on the image object
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*/
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function canvasactions_definecanvas_image(& $image, $action = array()) {
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// May be given either exact or relative dimensions.
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if ($action['exact']['width'] || $action['exact']['width']) {
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// Allows only one dimension to be used if the other is unset.
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if (! $action['exact']['width']) $action['exact']['width'] = $image->info['width'];
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if (! $action['exact']['height']) $action['exact']['height'] = $image->info['height'];
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$targetsize['width'] = _imagecache_percent_filter($action['exact']['width'], $image->info['width']);
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$targetsize['height'] = _imagecache_percent_filter($action['exact']['height'], $image->info['height']);
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$targetsize['left'] = _imagecache_keyword_filter($action['exact']['xpos'], $targetsize['width'], $image->info['width']);
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$targetsize['top'] = _imagecache_keyword_filter($action['exact']['ypos'], $targetsize['height'], $image->info['height']);
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}
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else {
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// calculate relative size
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$targetsize['width'] = $image->info['width'] + $action['relative']['leftdiff'] + $action['relative']['rightdiff'];
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$targetsize['height'] = $image->info['height'] + $action['relative']['topdiff'] + $action['relative']['bottomdiff'];
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$targetsize['left'] = $action['relative']['leftdiff'];
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$targetsize['top'] = $action['relative']['topdiff'];
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}
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$newcanvas = imagecreatetruecolor($targetsize['width'], $targetsize['height']);
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$RGB = $action['RGB'];
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// convert from hex (as it is stored in the UI)
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if($RGB['HEX'] && $deduced = hex_to_rgb($RGB['HEX'])) {
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$RGB = array_merge($RGB, $deduced);
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}
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if ($RGB['red'] || $RGB['green'] || $RGB['blue']) { // one may be zero...
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$background = imagecolorallocate($newcanvas, $RGB['red'], $RGB['green'], $RGB['blue']);
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}
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else {
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// No color, attempt transparency, assume white
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$background = imagecolorallocatealpha($newcanvas, 255, 255, 255, 127);
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imagesavealpha($newcanvas, TRUE);
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imagealphablending($newcanvas, false);
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imagesavealpha($image->res, TRUE);
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}
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imagefilledrectangle($newcanvas, 0, 0, $targetsize['width'], $targetsize['height'], $background);
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if ($action['under']) {
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require_once('watermark.inc');
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$watermark = new watermark();
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$image->res = $watermark->create_watermark($newcanvas, $image->res, $targetsize['left'], $targetsize['top'], 100);
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imagesavealpha($image->res, TRUE);
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}
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else {
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$image->res = $newcanvas ;
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}
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$image->info['width'] = $targetsize['width'];
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$image->info['height'] = $targetsize['height'];
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return TRUE;
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}
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////////////////////////////////////////////////
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/**
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* Place a given image under the current canvas
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*
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* Implementation of imagecache_hook_form()
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*
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* @param $action array of settings for this action
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* @return a form definition
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*/
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function canvasactions_canvas2file_form($action) {
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$form = array(
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'xpos' => array(
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'#type' => 'textfield',
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'#title' => t('X offset'),
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'#default_value' => $action['xpos'],
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'#size' => 6,
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'#description' => t('Enter an offset in pixels or use a keyword: <em>left</em>, <em>center</em>, or <em>right</em>.'),
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),
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'ypos' => array(
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'#type' => 'textfield',
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'#title' => t('Y offset'),
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'#default_value' => $action['ypos'],
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'#size' => 6,
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'#description' => t('Enter an offset in pixels or use a keyword: <em>top</em>, <em>center</em>, or <em>bottom</em>.'),
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),
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'alpha' => array(
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'#type' => 'textfield',
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'#title' => t('opacity'),
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'#default_value' => isset($action['alpha']) ? $action['alpha'] : 100,
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'#size' => 6,
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'#description' => t('Opacity: 0-100.'),
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),
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'path' => array(
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'#type' => 'textfield',
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'#title' => t('file name'),
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'#default_value' => $action['path'],
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'#description' => t('File may be in the "files/" folder, or relative to the Drupal siteroot.'),
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),
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);
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return $form;
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}
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/**
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* Implementation of theme_hook() for imagecache_ui.module
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*/
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function theme_canvasactions_canvas2file($element) {
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$data = $element['#value'];
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return 'xpos:'. $data['xpos'] .', ypos:'. $data['ypos'] .' alpha:'. $data['alpha'] .'%' ;
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}
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| 249 |
/**
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| 250 |
* Place the source image on the current background
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| 251 |
*
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| 252 |
* Implementation of hook_image()
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| 253 |
*
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| 254 |
*
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* @param $image
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* @param $action
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| 257 |
*/
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function canvasactions_canvas2file_image(&$image, $action = array()) {
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| 259 |
// search for full (siteroot) paths, then file dir paths, then relative to the current theme
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| 260 |
if (file_exists($action['path'])) {
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| 261 |
$underlay = imageapi_image_open($action['path']);
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}
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else if (file_exists(file_create_path($action['path']))) {
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$underlay = imageapi_image_open(file_create_path($action['path']));
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}
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// This func modifies the underlay image by ref, placing the current canvas on it
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if (imageapi_image_overlay($underlay, $image, $action['xpos'], $action['ypos'], $action['alpha'])) {
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$image->res = $underlay->res;
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//$image = $underlay;
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return TRUE;
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}
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}
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|
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////////////////////////////////////////////////
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|
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|
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/**
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* Place a given image on top of the current canvas
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*
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* Implementation of imagecache_hook_form()
|
| 281 |
*
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* @param $action array of settings for this action
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* @return a form definition
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*/
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function canvasactions_file2canvas_form($action) {
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| 286 |
$form = array(
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| 287 |
'help' => array(
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| 288 |
'#type' => 'markup',
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'#value' => t('Note that this action may require a lot of processing as transparency blends require that every pixel be re-calculated for each image. This can be a server-intensive process and generate a bit of load time.'),
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),
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| 291 |
'xpos' => array(
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| 292 |
'#type' => 'textfield',
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| 293 |
'#title' => t('X offset'),
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| 294 |
'#default_value' => $action['xpos'],
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| 295 |
'#size' => 6,
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| 296 |
'#description' => t('Enter an offset in pixels or use a keyword: <em>left</em>, <em>center</em>, or <em>right</em>.'),
|
| 297 |
),
|
| 298 |
'ypos' => array(
|
| 299 |
'#type' => 'textfield',
|
| 300 |
'#title' => t('Y offset'),
|
| 301 |
'#default_value' => $action['ypos'],
|
| 302 |
'#size' => 6,
|
| 303 |
'#description' => t('Enter an offset in pixels or use a keyword: <em>top</em>, <em>center</em>, or <em>bottom</em>.'),
|
| 304 |
),
|
| 305 |
'alpha' => array(
|
| 306 |
'#type' => 'textfield',
|
| 307 |
'#title' => t('opacity'),
|
| 308 |
'#default_value' => $action['alpha'],
|
| 309 |
'#size' => 6,
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| 310 |
'#description' => t('Opacity: 0-100.'),
|
| 311 |
),
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| 312 |
'path' => array(
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| 313 |
'#type' => 'textfield',
|
| 314 |
'#title' => t('file name'),
|
| 315 |
'#default_value' => $action['path'],
|
| 316 |
'#description' => t('File may be in the "files/" folder, or relative to the Drupal siteroot.'),
|
| 317 |
),
|
| 318 |
);
|
| 319 |
return $form;
|
| 320 |
}
|
| 321 |
|
| 322 |
/**
|
| 323 |
* Implementation of theme_hook() for imagecache_ui.module
|
| 324 |
*/
|
| 325 |
function theme_canvasactions_file2canvas($element) {
|
| 326 |
$action = $element['#value'];
|
| 327 |
return '<strong>'. basename($action['path']) . '</strong> x:'. $action['xpos'] .', y:'. $action['ypos'] .' alpha:'. $action['alpha'] .'%' ;
|
| 328 |
}
|
| 329 |
|
| 330 |
/**
|
| 331 |
* Place the source image on the current background
|
| 332 |
*
|
| 333 |
* Implementation of hook_image()
|
| 334 |
*
|
| 335 |
*
|
| 336 |
* @param $image
|
| 337 |
* @param $action
|
| 338 |
*/
|
| 339 |
function canvasactions_file2canvas_image(&$image, $action = array()) {
|
| 340 |
// search for full (siteroot) paths, then file dir paths, then relative to the current theme
|
| 341 |
if (file_exists($action['path'])) {
|
| 342 |
$overlay = imageapi_image_open($action['path']);
|
| 343 |
}
|
| 344 |
else if (file_exists(file_create_path($action['path']))) {
|
| 345 |
$overlay = imageapi_image_open(file_create_path($action['path']));
|
| 346 |
}
|
| 347 |
return imageapi_image_overlay($image, $overlay, $action['xpos'], $action['ypos'], $action['alpha']);
|
| 348 |
}
|
| 349 |
|
| 350 |
///////////////////////////////////////////////////////////////////
|
| 351 |
/**
|
| 352 |
* Place the source image on top of the current canvas
|
| 353 |
*
|
| 354 |
* Implementation of imagecache_hook_form()
|
| 355 |
*
|
| 356 |
*
|
| 357 |
*
|
| 358 |
* @param $action array of settings for this action
|
| 359 |
* @return a form definition
|
| 360 |
*/
|
| 361 |
function canvasactions_source2canvas_form($action) {
|
| 362 |
$form = array(
|
| 363 |
'xpos' => array(
|
| 364 |
'#type' => 'textfield',
|
| 365 |
'#title' => t('X offset'),
|
| 366 |
'#default_value' => $action['xpos'],
|
| 367 |
'#size' => 6,
|
| 368 |
'#description' => t('Enter an offset in pixels or use a keyword: <em>left</em>, <em>center</em>, or <em>right</em>.'),
|
| 369 |
),
|
| 370 |
'ypos' => array(
|
| 371 |
'#type' => 'textfield',
|
| 372 |
'#title' => t('Y offset'),
|
| 373 |
'#default_value' => $action['ypos'],
|
| 374 |
'#size' => 6,
|
| 375 |
'#description' => t('Enter an offset in pixels or use a keyword: <em>top</em>, <em>center</em>, or <em>bottom</em>.'),
|
| 376 |
),
|
| 377 |
'alpha' => array(
|
| 378 |
'#type' => 'textfield',
|
| 379 |
'#title' => t('opacity'),
|
| 380 |
'#default_value' => $action['alpha'] ? $action['alpha'] : 100,
|
| 381 |
'#size' => 6,
|
| 382 |
'#description' => t('Opacity: 0-100.'),
|
| 383 |
),
|
| 384 |
);
|
| 385 |
return $form;
|
| 386 |
}
|
| 387 |
|
| 388 |
/**
|
| 389 |
* Implementation of theme_hook() for imagecache_ui.module
|
| 390 |
*/
|
| 391 |
function theme_canvasactions_source2canvas($element) {
|
| 392 |
$data = $element['#value'];
|
| 393 |
return 'xpos:'. $data['xpos'] .', ypos:'. $data['ypos'] .' alpha:'. $data['alpha'] .'%' ;
|
| 394 |
}
|
| 395 |
|
| 396 |
/**
|
| 397 |
* Place the source image on the current background
|
| 398 |
*
|
| 399 |
* Implementation of hook_image()
|
| 400 |
*
|
| 401 |
*
|
| 402 |
* @param $image
|
| 403 |
* @param $action
|
| 404 |
*/
|
| 405 |
function canvasactions_source2canvas_image(&$image, $action = array()) {
|
| 406 |
$overlay = imageapi_image_open($image->source); // this probably means opening the image twice. c'est la vie
|
| 407 |
return imageapi_image_overlay($image, $overlay, $action['xpos'], $action['ypos'], $action['alpha']);
|
| 408 |
}
|
| 409 |
|
| 410 |
////////////////////////////////////////////////
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