386 | | if ( ! $this->make_image( $filename, 'imagepng', array( $image, $filename ) ) ) |
| 386 | /* |
| 387 | * Convert quality (1-100) to a valid compression value (0-9) |
| 388 | * -1 = use default zlib compression |
| 389 | * 0 = no compression |
| 390 | * 1 = worst compression |
| 391 | * 9 = best compression |
| 392 | */ |
| 393 | $compression_level = floor( $this->quality / 10 ); |
| 394 | |
| 395 | if ( $compression_level > 9 ) { |
| 396 | $compression_level = 9; |
| 397 | } elseif ( -1 != $compression_level && $compression_level < 0 ) { |
| 398 | $compression_level = 0; |
| 399 | } |
| 400 | if ( ! $this->make_image( $filename, 'imagepng', array( $image, $filename, $compression_level ) ) ) { |