/**
* 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;
}
/**
* 画像保存
*
* CairoのPNG画像を保存します。
*
* @param string $filePath 保存画像のファイルパス
* @param string $format 画像ファイルのフォーマット
*
* @return void
*/
public function save($filePath, $format = 'png')
{
unset($format);
cairo_surface_write_to_png($this->surface, $filePath);
$isSaved = file_exists($filePath);
$log = array('isSaved' => $isSaved, 'surface' => $this->surface, 'is_res' => is_resource($this->surface), 'file path' => $filePath, 'file_exists' => file_exists($filePath), 'file size' => filesize($filePath));
$this->_log->log('cairo_surface_write_to_png', $log);
cairo_surface_destroy($this->surface);
}
