function canvasactions_definecanvas_image in ImageCache Actions 6
Same name and namespace in other branches
- 5.3 canvasactions.inc \canvasactions_definecanvas_image()
- 5.2 canvasactions.inc \canvasactions_definecanvas_image()
- 6.2 canvasactions/canvasactions.inc \canvasactions_definecanvas_image()
Implementation of hook_image()
Creates a solid background canvas
Process the imagecache action on the passed image
Parameters
$image: array defining an image file, including :
$image- >source as the filename,
$image->info array
$image->resource handle on the image object
File
- ./
canvasactions.inc, line 173 - Helper functions for the text2canvas action for imagecache
Code
function canvasactions_definecanvas_image(&$image, $action = array()) {
// May be given either exact or relative dimensions.
if ($action['exact']['width'] || $action['exact']['width']) {
// Allows only one dimension to be used if the other is unset.
if (!$action['exact']['width']) {
$action['exact']['width'] = $image->info['width'];
}
if (!$action['exact']['height']) {
$action['exact']['height'] = $image->info['height'];
}
$targetsize['width'] = _imagecache_percent_filter($action['exact']['width'], $image->info['width']);
$targetsize['height'] = _imagecache_percent_filter($action['exact']['height'], $image->info['height']);
$targetsize['left'] = _imagecache_keyword_filter($action['exact']['xpos'], $targetsize['width'], $image->info['width']);
$targetsize['top'] = _imagecache_keyword_filter($action['exact']['ypos'], $targetsize['height'], $image->info['height']);
}
else {
// calculate relative size
$targetsize['width'] = $image->info['width'] + $action['relative']['leftdiff'] + $action['relative']['rightdiff'];
$targetsize['height'] = $image->info['height'] + $action['relative']['topdiff'] + $action['relative']['bottomdiff'];
$targetsize['left'] = $action['relative']['leftdiff'];
$targetsize['top'] = $action['relative']['topdiff'];
}
// convert from hex (as it is stored in the UI)
if ($action['RGB']['HEX'] && ($deduced = hex_to_rgb($action['RGB']['HEX']))) {
$action['RGB'] = array_merge($action['RGB'], $deduced);
}
// All the maths is done, now defer to the api toolkits;
$action['targetsize'] = $targetsize;
$success = imageapi_toolkit_invoke('definecanvas', $image, array(
$action,
));
if ($success) {
$image->info['width'] = $targetsize['width'];
$image->info['height'] = $targetsize['height'];
}
return $success;
/*
$newcanvas = imagecreatetruecolor($targetsize['width'], $targetsize['height']);
if ($RGB['HEX'] && $deduced = hex_to_rgb($RGB['HEX'])) {
$background = imagecolorallocate($newcanvas, $RGB['red'], $RGB['green'], $RGB['blue']);
}
else {
// No color, attempt transparency, assume white
$background = imagecolorallocatealpha($newcanvas, 255, 255, 255, 127);
imagesavealpha($newcanvas, TRUE);
imagealphablending($newcanvas, FALSE);
imagesavealpha($image->resource, TRUE);
}
imagefilledrectangle($newcanvas, 0, 0, $targetsize['width'], $targetsize['height'], $background);
# imagealphablending($newcanvas, TRUE);
if ($action['under']) {
$canvas_object = (object) array(
'resource' => $newcanvas,
'info' => array(
'width' => $targetsize['width'],
'height' => $targetsize['height'],
'mime_type' => 'image/png',
),
'toolkit' => $image->toolkit,
);
imageapi_image_overlay($canvas_object, $image, $targetsize['left'], $targetsize['top'], 100, TRUE);
}
else {
$image->resource = $newcanvas ;
}
*/
$image->info['width'] = $targetsize['width'];
$image->info['height'] = $targetsize['height'];
return TRUE;
}