/**
* ファイルのロード
*
* <pre>
* $fileにはローカルファイルのパスまたはリモートファイルのURLを指定します。
* リモートファイルの読み込みにはphp.iniでallow_url_fopen =Onの設定が必要です。
* </pre>
*
* @param string $file ファイル名
*
* @return void
*/
public function load($file)
{
//拡張子はpngチェック
$this->file = $file;
$tmpFile = $this->loadRemoteFile($file);
$this->getImageInfo();
$this->_log->log('$tmpFile', $tmpFile);
BEAR_Img::$deleteFiles[] = $tmpFile;
$this->surface = cairo_image_surface_create_from_png($tmpFile);
if (!is_resource($this->surface)) {
$fileSize = file_exists($file) ? filesize($file) : 'none';
$this->_thisError("load", "cairo_image_surface_create_from_png filse_size=[{$fileSize}] file=[{$file}] ");
}
$this->image = cairo_create($this->surface);
if (!is_resource($this->image)) {
$this->_thisError('load', 'cairo_create');
}
cairo_paint_with_alpha($this->image, 0);
$this->_srcWidth = cairo_image_surface_get_width($this->surface);
$this->_srcHeight = cairo_image_surface_get_height($this->surface);
}
/**
* Mirrors the image horizontally.
* Uses an affine transformation matrix to mirror the image.
*
* 123 -> 321
*
* @return void
*/
function mirror()
{
$outputSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, $this->img_x, $this->img_y);
$outputContext = cairo_create($outputSurface);
// xx, yx, xy, yy, x0, y0
$matrix = cairo_matrix_create(-1, 0, 0, 1, $this->img_x, 0);
cairo_set_matrix($outputContext, $matrix);
cairo_set_source_surface($outputContext, $this->surface, 0, 0);
cairo_paint($outputContext);
cairo_destroy($outputContext);
cairo_surface_destroy($this->surface);
$this->surface = $outputSurface;
}
/**
* Initilize cairo surface
*
* Initilize cairo surface from values provided in the options object, if
* is has not been already initlized.
*
* @return void
*/
protected function initiliazeSurface()
{
// Immediatly exit, if surface already exists
if ($this->surface !== null) {
return;
}
$this->surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, $this->options->width, $this->options->height);
$this->context = cairo_create($this->surface);
cairo_set_line_width($this->context, 1);
}
