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<?php
if (!function_exists('image_overlay')) {
module_load_include('inc', 'imagecache_actions', 'image_overlay');
}
if (!function_exists('imagecache_actions_pos_form')) {
module_load_include('inc', 'imagecache_actions', 'utility-form');
}
if (!function_exists('imagecache_actions_keyword_filter')) {
module_load_include('inc', 'imagecache_actions', 'utility');
}
function canvasactions_imagemask_form(array $data) {
$form = array();
$form['effect_help_text'] = array(
'#type' => 'item',
'#title' => t('Image mask'),
'#description' => t('This effect will add (or replace) a transparency channel to your image. The mask file should be a grayscale image where black is fully transparent and white is fully opaque. The referenced mask will be applied to the top left of the image.'),
);
$form['path'] = array(
'#type' => 'textfield',
'#title' => t('Mask file name'),
'#default_value' => isset($data['path']) ? $data['path'] : '',
'#description' => imagecache_actions_file_field_description(),
'#element_validate' => array(
'imagecache_actions_validate_file',
),
);
return $form;
}
function theme_canvasactions_imagemask_summary(array $variables) {
$data = $variables['data'];
return 'file: ' . $data['path'];
}
function canvasactions_imagemask_effect(stdClass $image, array $data) {
$mask = imagecache_actions_image_load($data['path'], $image->toolkit);
if ($mask) {
return image_toolkit_invoke('imagemask', $image, array(
$mask,
));
}
return FALSE;
}
function image_gd_imagemask(stdClass $image, stdClass $mask) {
$newPicture = imagecreatetruecolor($image->info['width'], $image->info['height']);
imagesavealpha($newPicture, TRUE);
imagealphablending($newPicture, TRUE);
$transparent = imagecolorallocatealpha($newPicture, 0, 0, 0, 127);
imagefill($newPicture, 0, 0, $transparent);
for ($x = 0; $x < $image->info['width']; $x++) {
for ($y = 0; $y < $image->info['height']; $y++) {
if ($x >= $mask->info['width'] || $y >= $mask->info['height']) {
imagesetpixel($newPicture, $x, $y, $transparent);
}
else {
$alpha = imagecolorsforindex($mask->resource, imagecolorat($mask->resource, $x, $y));
$alpha = 127 - floor($alpha['red'] / 2);
$color = imagecolorsforindex($image->resource, imagecolorat($image->resource, $x, $y));
imagesetpixel($newPicture, $x, $y, imagecolorallocatealpha($newPicture, $color['red'], $color['green'], $color['blue'], $alpha));
}
}
}
imagedestroy($image->resource);
$image->resource = $newPicture;
return TRUE;
}
function image_imagemagick_imagemask(stdClass $image, stdClass $mask) {
$image->ops[] = escapeshellarg($mask->source);
$image->ops[] = '-alpha Off -compose CopyOpacity -composite';
return TRUE;
}
function canvasactions_definecanvas_form(array $data) {
module_load_include('inc', 'imagecache_actions', 'utility-color');
$defaults = array(
'RGB' => array(
'HEX' => '#333333',
),
'under' => TRUE,
'exact' => array(
'width' => '',
'height' => '',
'xpos' => 'center',
'ypos' => 'center',
),
'relative' => array(
'leftdiff' => '',
'rightdiff' => '',
'topdiff' => '',
'bottomdiff' => '',
),
);
$data += $defaults;
$form = array(
'RGB' => imagecache_rgb_form($data['RGB']),
'help' => array(
'#markup' => t('Enter no color value for transparent. This will have the effect of adding clear margins around the image.'),
'#prefix' => '<p>',
'#suffix' => '</p>',
),
'under' => array(
'#type' => 'checkbox',
'#title' => t('Resize canvas <em>under</em> image (possibly cropping)'),
'#default_value' => $data['under'],
'#description' => t('If <em>not</em> set, this will create a solid flat layer, probably totally obscuring the source image'),
),
);
$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.'),
);
$form['exact'] = array(
'#type' => 'fieldset',
'#collapsible' => TRUE,
'#title' => 'Exact size',
'help' => array(
'#markup' => t('Set the canvas to a precise size, possibly cropping the image. Use to start with a known size.'),
'#prefix' => '<p>',
'#suffix' => '</p>',
),
'width' => array(
'#type' => 'textfield',
'#title' => t('Width'),
'#default_value' => $data['exact']['width'],
'#description' => t('Enter a value in pixels or percent'),
'#size' => 5,
),
'height' => array(
'#type' => 'textfield',
'#title' => t('Height'),
'#default_value' => $data['exact']['height'],
'#description' => t('Enter a value in pixels or percent'),
'#size' => 5,
),
);
$form['exact'] = array_merge($form['exact'], imagecache_actions_pos_form($data['exact']));
if (!$data['exact']['width'] && !$data['exact']['height']) {
$form['exact']['#collapsed'] = TRUE;
}
$form['relative'] = array(
'#type' => 'fieldset',
'#collapsible' => TRUE,
'#title' => t('Relative size'),
'help' => array(
'#markup' => 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.'),
'#prefix' => '<p>',
'#suffix' => '</p>',
),
'leftdiff' => array(
'#type' => 'textfield',
'#title' => t('left difference'),
'#default_value' => $data['relative']['leftdiff'],
'#size' => 6,
'#description' => t('Enter an offset in pixels.'),
),
'rightdiff' => array(
'#type' => 'textfield',
'#title' => t('right difference'),
'#default_value' => $data['relative']['rightdiff'],
'#size' => 6,
'#description' => t('Enter an offset in pixels.'),
),
'topdiff' => array(
'#type' => 'textfield',
'#title' => t('top difference'),
'#default_value' => $data['relative']['topdiff'],
'#size' => 6,
'#description' => t('Enter an offset in pixels.'),
),
'bottomdiff' => array(
'#type' => 'textfield',
'#title' => t('bottom difference'),
'#default_value' => $data['relative']['bottomdiff'],
'#size' => 6,
'#description' => t('Enter an offset in pixels.'),
),
);
if (!$data['relative']['leftdiff'] && !$data['relative']['rightdiff'] && !$data['relative']['topdiff'] && !$data['relative']['bottomdiff']) {
$form['relative']['#collapsed'] = TRUE;
}
$form['#submit'][] = 'canvasactions_definecanvas_form_submit';
return $form;
}
function theme_canvasactions_definecanvas_summary(array $variables) {
$data = $variables['data'];
if ($data['exact']['width'] || $data['exact']['height']) {
$w = !empty($data['exact']['width']) ? $data['exact']['width'] : '100%';
$h = !empty($data['exact']['height']) ? $data['exact']['height'] : '100%';
$x = !empty($data['exact']['xpos']) ? $data['exact']['xpos'] : '0';
$y = !empty($data['exact']['ypos']) ? $data['exact']['ypos'] : '0';
$output = "{$w}x{$h} ({$x}, {$y})";
}
else {
$output = ' left:' . $data['relative']['leftdiff'];
$output .= ' right:' . $data['relative']['rightdiff'];
$output .= ' top:' . $data['relative']['topdiff'];
$output .= ' bottom:' . $data['relative']['bottomdiff'];
}
$output .= theme('imagecacheactions_rgb', array(
'RGB' => $data['RGB'],
));
$output .= $data['under'] ? t(" <b>under</b> image ") : t(" <b>over</b> image ");
return $output;
}
function canvasactions_definecanvas_effect(stdClass $image, array $data) {
if ($data['exact']['width'] || $data['exact']['height']) {
if (!$data['exact']['width']) {
$data['exact']['width'] = $image->info['width'];
}
if (!$data['exact']['height']) {
$data['exact']['height'] = $image->info['height'];
}
$targetsize['width'] = imagecache_actions_percent_filter($data['exact']['width'], $image->info['width']);
$targetsize['height'] = imagecache_actions_percent_filter($data['exact']['height'], $image->info['height']);
$targetsize['left'] = image_filter_keyword($data['exact']['xpos'], $targetsize['width'], $image->info['width']);
$targetsize['top'] = image_filter_keyword($data['exact']['ypos'], $targetsize['height'], $image->info['height']);
}
else {
$targetsize['width'] = $image->info['width'] + $data['relative']['leftdiff'] + $data['relative']['rightdiff'];
$targetsize['height'] = $image->info['height'] + $data['relative']['topdiff'] + $data['relative']['bottomdiff'];
$targetsize['left'] = $data['relative']['leftdiff'];
$targetsize['top'] = $data['relative']['topdiff'];
}
if ($data['RGB']['HEX'] && ($deduced = imagecache_actions_hex2rgba($data['RGB']['HEX']))) {
$data['RGB'] = array_merge($data['RGB'], $deduced);
}
$data['targetsize'] = $targetsize;
$success = image_toolkit_invoke('definecanvas', $image, array(
$data,
));
if ($success) {
$image->info['width'] = $targetsize['width'];
$image->info['height'] = $targetsize['height'];
}
return $success;
}
function image_gd_definecanvas(stdClass $image, array $data) {
$targetsize = $data['targetsize'];
$RGB = $data['RGB'];
$newcanvas = imagecreatetruecolor($targetsize['width'], $targetsize['height']);
imagesavealpha($newcanvas, TRUE);
imagealphablending($newcanvas, FALSE);
imagesavealpha($image->resource, TRUE);
if ($RGB['HEX']) {
$background = imagecolorallocatealpha($newcanvas, $RGB['red'], $RGB['green'], $RGB['blue'], $RGB['alpha']);
}
else {
$background = imagecolorallocatealpha($newcanvas, 255, 255, 255, 127);
}
imagefilledrectangle($newcanvas, 0, 0, $targetsize['width'], $targetsize['height'], $background);
if ($data['under']) {
$canvas_object = new stdClass();
$canvas_object->resource = $newcanvas;
$canvas_object->info = array(
'width' => $targetsize['width'],
'height' => $targetsize['height'],
'mime_type' => $image->info['mime_type'],
'extension' => $image->info['extension'],
);
$canvas_object->toolkit = $image->toolkit;
image_overlay($image, $canvas_object, $targetsize['left'], $targetsize['top'], 100, TRUE);
}
else {
$image->resource = $newcanvas;
}
return TRUE;
}
function image_imagemagick_definecanvas(stdClass $image, $data) {
$image->ops[] = '-gravity None';
$backgroundcolor = $data['RGB']['HEX'] != '' ? '#' . ltrim($data['RGB']['HEX'], '#') : 'None';
$image->ops[] = '-background ' . escapeshellarg($backgroundcolor);
$compose_operator = $data['under'] ? 'src-over' : 'dst-over';
$image->ops[] = "-compose {$compose_operator}";
$targetsize = $data['targetsize'];
$geometry = sprintf('%dx%d', $targetsize['width'], $targetsize['height']);
if ($targetsize['left'] || $targetsize['top']) {
$geometry .= sprintf('%+d%+d', -$targetsize['left'], -$targetsize['top']);
}
$image->ops[] = '-extent ' . escapeshellarg($geometry);
return TRUE;
}
function canvasactions_definecanvas_dimensions(array &$dimensions, array $data) {
if ($data['exact']['width'] || $data['exact']['height']) {
if (!$data['exact']['width']) {
$data['exact']['width'] = $dimensions['width'];
}
if (!$data['exact']['height']) {
$data['exact']['height'] = $dimensions['height'];
}
$dimensions['width'] = imagecache_actions_percent_filter($data['exact']['width'], $dimensions['width']);
$dimensions['height'] = imagecache_actions_percent_filter($data['exact']['height'], $dimensions['height']);
}
else {
if ($dimensions['width'] !== NULL) {
$dimensions['width'] = $dimensions['width'] + (int) $data['relative']['leftdiff'] + (int) $data['relative']['rightdiff'];
}
if ($dimensions['height'] !== NULL) {
$dimensions['height'] = $dimensions['height'] + (int) $data['relative']['topdiff'] + (int) $data['relative']['bottomdiff'];
}
}
}
function canvasactions_canvas2file_form(array $data) {
$defaults = array(
'xpos' => '0',
'ypos' => '0',
'alpha' => '100',
'path' => '',
'dimensions' => 'original',
);
$data = array_merge($defaults, (array) $data);
$form = imagecache_actions_pos_form($data);
$form['alpha'] = array(
'#type' => 'textfield',
'#title' => t('opacity'),
'#default_value' => $data['alpha'],
'#size' => 6,
'#description' => t('Opacity: 0-100. Be aware that values other than 100% may be slow to process.'),
);
$form['path'] = array(
'#type' => 'textfield',
'#title' => t('file name'),
'#default_value' => $data['path'],
'#description' => imagecache_actions_file_field_description(),
'#element_validate' => array(
'imagecache_actions_validate_file',
),
);
$form['dimensions'] = array(
'#type' => 'radios',
'#title' => t('final dimensions'),
'#default_value' => $data['dimensions'],
'#options' => array(
'original' => 'original (dimensions are retained)',
'background' => 'background (image will be forced to match the size of the background)',
'minimum' => 'minimum (image may be cropped)',
'maximum' => 'maximum (image may end up with gaps)',
),
'#description' => t('What to do when the background image is a different size from the source image. Backgrounds are not tiled, but may be arbitrarily large.'),
);
return $form;
}
function theme_canvasactions_canvas2file_summary($variables) {
$data = $variables['data'];
$file = $data['path'];
return "xpos:{$data['xpos']} , ypos:{$data['ypos']} alpha:{$data['alpha']}%. file: {$file}, dimensions:{$data['dimensions']}";
}
function canvasactions_canvas2file_effect(stdClass $image, array $data) {
$underlay = imagecache_actions_image_load($data['path'], $image->toolkit);
if ($underlay) {
$crop_rules = array(
'xoffset' => 0,
'yoffset' => 0,
);
if (empty($data['dimensions'])) {
$data['dimensions'] = 'original';
}
switch ($data['dimensions']) {
case 'original':
$crop_rules['width'] = $image->info['width'];
$crop_rules['height'] = $image->info['height'];
break;
case 'background':
$crop_rules['width'] = $underlay->info['width'];
$crop_rules['height'] = $underlay->info['height'];
break;
case 'minimum':
$crop_rules['width'] = min($underlay->info['width'], $image->info['width']);
$crop_rules['height'] = min($underlay->info['height'], $image->info['height']);
break;
case 'maximum':
$crop_rules['width'] = max($underlay->info['width'], $image->info['width']);
$crop_rules['height'] = max($underlay->info['height'], $image->info['height']);
break;
}
image_crop_effect($underlay, $crop_rules);
if (image_overlay($image, $underlay, $data['xpos'], $data['ypos'], $data['alpha'], TRUE)) {
$image = $underlay;
return TRUE;
}
}
return FALSE;
}
function canvasactions_canvas2file_dimensions(array &$dimensions, array $data) {
if ($data['dimensions'] !== 'original') {
$underlay = imagecache_actions_image_load($data['path']);
if ($underlay) {
switch ($data['dimensions']) {
case 'background':
$dimensions['width'] = $underlay->info['width'];
$dimensions['height'] = $underlay->info['height'];
break;
case 'minimum':
if ($dimensions['width'] !== NULL) {
$dimensions['width'] = min($underlay->info['width'], $dimensions['width']);
}
if ($dimensions['height'] !== NULL) {
$dimensions['height'] = min($underlay->info['height'], $dimensions['height']);
}
break;
case 'maximum':
if ($dimensions['width'] !== NULL) {
$dimensions['width'] = max($underlay->info['width'], $dimensions['width']);
}
if ($dimensions['height'] !== NULL) {
$dimensions['height'] = max($underlay->info['height'], $dimensions['height']);
}
break;
}
}
}
}
function canvasactions_file2canvas_form(array $data) {
$defaults = array(
'xpos' => '',
'ypos' => '',
'alpha' => '100',
'scale' => '',
'path' => '',
);
$data = array_merge($defaults, (array) $data);
$form = array(
'help' => array(
'#markup' => t('Note that using a non transparent overlay that is larger than the source image may result in unwanted results - a solid background.'),
),
);
$form += imagecache_actions_pos_form($data);
$form['alpha'] = array(
'#type' => 'textfield',
'#title' => t('opacity'),
'#default_value' => $data['alpha'],
'#field_suffix' => t('%'),
'#size' => 6,
'#description' => t('Opacity: 0-100. <b>Warning:</b> Due to a limitation in the GD toolkit, using an opacity other than 100% requires the system to use an algorithm that\'s much slower than the built-in functions. If you want partial transparency, you are better to use an already-transparent png as the overlay source image.'),
'#element_validate' => array(
'imagecache_actions_validate_number_non_negative',
),
);
$form['scale'] = array(
'#type' => 'textfield',
'#title' => t('scale'),
'#default_value' => $data['scale'],
'#field_suffix' => t('%'),
'#size' => 6,
'#description' => t('Scales the overlay with respect to the source, thus not its own dimensions. Leave empty to use the original size of overlay image.'),
'#element_validate' => array(
'imagecache_actions_validate_number_positive',
),
);
$form['path'] = array(
'#type' => 'textfield',
'#title' => t('file name'),
'#default_value' => $data['path'],
'#description' => imagecache_actions_file_field_description(),
'#element_validate' => array(
'imagecache_actions_validate_file',
),
);
return $form;
}
function theme_canvasactions_file2canvas_summary(array $variables) {
$data = $variables['data'];
return '<strong>' . $data['path'] . '</strong>, x:' . $data['xpos'] . ', y:' . $data['ypos'] . ', alpha:' . (!empty($data['alpha']) ? $data['alpha'] : 100) . '%' . ', scale:' . (!empty($data['scale']) ? $data['scale'] . '%' : '-');
}
function canvasactions_file2canvas_effect(stdClass $image, array $data) {
$overlay = imagecache_actions_image_load($data['path']);
if ($overlay) {
if (!empty($data['scale']) && $data['scale'] > 0) {
$overlay_w = $image->info['width'] * $data['scale'] / 100;
image_scale($overlay, $overlay_w, NULL, TRUE);
}
if (!isset($data['alpha'])) {
$data['alpha'] = 100;
}
return image_overlay($image, $overlay, $data['xpos'], $data['ypos'], $data['alpha']);
}
return FALSE;
}
function canvasactions_source2canvas_form($data) {
$defaults = array(
'xpos' => '',
'ypos' => '',
'alpha' => '100',
'path' => '',
);
$data = array_merge($defaults, (array) $data);
$form = imagecache_actions_pos_form($data);
$form['alpha'] = array(
'#type' => 'textfield',
'#title' => t('opacity'),
'#default_value' => $data['alpha'],
'#size' => 6,
'#description' => t('Opacity: 0-100.'),
);
return $form;
}
function theme_canvasactions_source2canvas_summary(array $variables) {
$data = $variables['data'];
return 'xpos:' . $data['xpos'] . ', ypos:' . $data['ypos'] . ' alpha:' . $data['alpha'] . '%';
}
function canvasactions_source2canvas_effect(stdClass $image, array $data) {
$overlay = image_load($image->source, $image->toolkit);
return image_overlay($image, $overlay, $data['xpos'], $data['ypos'], $data['alpha']);
}
function canvasactions_aspect_form(array $data) {
$defaults = array(
'ratio_adjustment' => 1,
'portrait' => '',
'landscape' => '',
);
$data = array_merge($defaults, (array) $data);
$form = array(
'help' => array(
'#markup' => t('You must create the two presets to use <em>before</em> enabling this process.'),
),
);
$styles = image_style_options(TRUE, PASS_THROUGH);
$form['portrait'] = array(
'#type' => 'select',
'#title' => t('Style to use if the image is portrait (vertical)'),
'#default_value' => $data['portrait'],
'#options' => $styles,
'#description' => t('If you choose none, no extra processing will be done.'),
);
$form['landscape'] = array(
'#type' => 'select',
'#title' => t('Style to use if the image is landscape (horizontal)'),
'#default_value' => $data['landscape'],
'#options' => $styles,
'#description' => t('If you choose none, no extra processing will be done.'),
);
$form['ratio_adjustment'] = array(
'#type' => 'textfield',
'#title' => t('Ratio Adjustment (advanced)'),
'#size' => 3,
'#default_value' => $data['ratio_adjustment'],
'#description' => t("\nThis allows you to bend the rules for how different the proportions need to be to trigger the switch.\n<br/>If the (width/height)*n is greater than 1, use 'landscape', otherwise use 'portrait'.\n<br/>When n = 1 (the default) it will switch between portrait and landscape modes.\n<br/>If n > 1, images that are slightly wide will still be treated as portraits.\nIf n < 1 then blunt portraits will be treated as landscape.\n "),
);
return $form;
}
function theme_canvasactions_aspect_summary(array $variables) {
$data = $variables['data'];
$label = imagecache_actions_get_style_label($data['portrait']);
$output = t('Portrait size: %label', array(
'%label' => $label,
));
$label = imagecache_actions_get_style_label($data['landscape']);
$output .= ', ' . t('Landscape size: %label', array(
'%label' => $label,
));
if ($data['ratio_adjustment'] != 1) {
$output .= ', ' . t("(switch at 1:@ratio_adjustment)", array(
'@ratio_adjustment' => $data['ratio_adjustment'],
));
}
return trim($output);
}
function canvasactions_aspect_effect(stdClass $image, array $data) {
$ratio_adjustment = isset($data['ratio_adjustment']) ? floatval($data['ratio_adjustment']) : 1;
$aspect = $image->info['width'] / $image->info['height'];
$style_name = $aspect * $ratio_adjustment > 1 ? $data['landscape'] : $data['portrait'];
if (empty($style_name)) {
return TRUE;
}
$style = image_style_load($style_name);
if (empty($style)) {
watchdog('imagecache_actions', "When running 'aspect' action, I was unable to load sub-action %style_name. Either it's been deleted or the DB needs an update", array(
'%style_name' => $style_name,
), WATCHDOG_ERROR);
return FALSE;
}
foreach ($style['effects'] as $sub_effect) {
image_effect_apply($image, $sub_effect);
}
return TRUE;
}
function canvasactions_aspect_dimensions(array &$dimensions, array $data) {
if (!isset($dimensions['width']) || !isset($dimensions['height'])) {
$landscape_dimensions = $portrait_dimensions = $dimensions;
image_style_transform_dimensions($data['landscape'], $landscape_dimensions);
image_style_transform_dimensions($data['portrait'], $portrait_dimensions);
if ($landscape_dimensions == $portrait_dimensions) {
$dimensions = $landscape_dimensions;
}
else {
$dimensions['width'] = $dimensions['height'] = NULL;
}
}
else {
$ratio_adjustment = isset($data['ratio_adjustment']) ? floatval($data['ratio_adjustment']) : 1;
$aspect = $dimensions['width'] / $dimensions['height'];
$style_name = $aspect * $ratio_adjustment > 1 ? $data['landscape'] : $data['portrait'];
image_style_transform_dimensions($style_name, $dimensions);
}
}
function canvasactions_resizepercent_form(array $data) {
$defaults = array(
'width' => '',
'height' => '',
);
$data = array_merge($defaults, (array) $data);
$form['#element_validate'] = array(
'image_effect_scale_validate',
);
$form['width'] = array(
'#type' => 'textfield',
'#title' => t('Width'),
'#default_value' => !empty($data['width']) ? (double) $data['width'] : '',
'#field_suffix' => ' ' . t('percent'),
'#required' => FALSE,
'#size' => 10,
'#element_validate' => array(
'canvasactions_resizepercent_validate',
),
'#allow_negative' => FALSE,
);
$form['height'] = array(
'#type' => 'textfield',
'#title' => t('Height'),
'#default_value' => !empty($data['height']) ? (double) $data['height'] : '',
'#field_suffix' => ' ' . t('percent'),
'#required' => FALSE,
'#size' => 10,
'#element_validate' => array(
'canvasactions_resizepercent_validate',
),
'#allow_negative' => FALSE,
);
return $form;
}
function canvasactions_resizepercent_validate($element, &$form_state) {
element_validate_number($element, $form_state);
if (!form_get_error($element)) {
if ($element['#value'] != '' && (double) $element['#value'] <= 0) {
form_error($element, t('!name must be a positive number.', array(
'!name' => $element['#title'],
)));
}
}
}
function _canvasactions_resizepercent_calculate_percent(array $data) {
if (empty($data['height'])) {
if (empty($data['width'])) {
return FALSE;
}
$data['height'] = $data['width'];
}
else {
if (empty($data['width'])) {
$data['width'] = $data['height'];
}
}
$data['width'] = (double) $data['width'] / 100;
$data['height'] = (double) $data['height'] / 100;
return $data;
}
function theme_canvasactions_resizepercent_summary(array $variables) {
$data = _canvasactions_resizepercent_calculate_percent($variables['data']);
if (!$data) {
return t('Invalid effect data');
}
if ($data['width'] != $data['height']) {
return t('@width%x@height%', array(
'@width' => 100 * $data['width'],
'@height' => 100 * $data['height'],
));
}
else {
return t('scale to @percent%', array(
'@percent' => (double) 100 * $data['height'],
));
}
}
function canvasactions_resizepercent_effect(stdClass $image, array $data) {
$data = _canvasactions_resizepercent_calculate_percent($data);
$data['width'] = (int) round($image->info['width'] * $data['width']);
$data['height'] = (int) round($image->info['height'] * $data['height']);
return image_resize_effect($image, $data);
}
function canvasactions_resizepercent_dimensions(array &$dimensions, array $data) {
$data = _canvasactions_resizepercent_calculate_percent($data);
$dimensions['width'] = (int) round($dimensions['width'] * $data['width']);
$dimensions['height'] = (int) round($dimensions['height'] * $data['height']);
}
function canvasactions_blur_form(array $data) {
$form['intensity'] = array(
'#type' => 'textfield',
'#title' => t('Blur intensity'),
'#description' => t('A higher intensity results in more blur. The larger the image, the larger value you need to get a really blurred image, think 50 to 100 for 600x400 images.'),
'#size' => 5,
'#default_value' => isset($data['intensity']) ? (int) $data['intensity'] : 2,
'#element_validate' => array(
'element_validate_integer_positive',
),
);
return $form;
}
function theme_canvasactions_blur_summary($variables) {
return t('Intensity: @intensity', array(
'@intensity' => $variables['data']['intensity'],
));
}
function canvasactions_blur_effect(stdClass $image, array $data) {
return image_toolkit_invoke('blur', $image, $data);
}
function image_gd_blur(stdClass $image, $intensity) {
$intensity = (int) $intensity;
$result = TRUE;
$i = 0;
while ($result && $i++ < $intensity) {
$result = imagefilter($image->resource, IMG_FILTER_GAUSSIAN_BLUR);
}
return $result;
}
function image_imagemagick_blur(stdClass $image, $intensity) {
$sigma = 4.0 + 0.8 * $intensity;
$image->ops[] = '-blur ' . escapeshellarg(sprintf('0x%f', $sigma));
return TRUE;
}
function canvasactions_interlace_form() {
$form = array();
$form['help'] = array(
'#markup' => '<p><strong>There are no user-configurable options for this process.</strong></p>
<p>This effect will save the derivative image in an interlace / progressive way
which might improve perceived performance, especially for large images.
File size and loading speed will not change, but the user will pretty quickly
see a "degraded" copy of the entire image instead of a clear copy of the upper
part of the image.</p>
<p>Wikipedia: <a href="https://en.wikipedia.org/wiki/Interlacing_(bitmaps)">Interlacing (bitmaps)</a></p>',
);
return $form;
}
function canvasactions_interlace_effect(stdClass $image, array $data) {
return image_toolkit_invoke('interlace', $image, array(
$data,
));
}
function image_gd_interlace($image) {
imageinterlace($image->resource, 1);
return TRUE;
}
function image_imagemagick_interlace($image) {
$image->ops[] = '-interlace Plane';
return TRUE;
}
