Struct PngsaveOptions 

pub struct PngsaveOptions {
    pub compression: i32,
    pub interlace: bool,
    pub filter: ForeignPngFilter,
    pub palette: bool,
    pub q: i32,
    pub dither: f64,
    pub bitdepth: i32,
    pub effort: i32,
    pub keep: ForeignKeep,
    pub background: Vec<f64>,
    pub page_height: i32,
    pub profile: String,
}

Options for pngsave operation

Fields

compression: i32

compression: i32 -> Compression factor min: 0, max: 9, default: 6

interlace: bool

interlace: bool -> Interlace image default: false

filter: ForeignPngFilter

filter: ForeignPngFilter -> libpng row filter flag(s) None -> VIPS_FOREIGN_PNG_FILTER_NONE = 8 [DEFAULT] Sub -> VIPS_FOREIGN_PNG_FILTER_SUB = 16 Up -> VIPS_FOREIGN_PNG_FILTER_UP = 32 Avg -> VIPS_FOREIGN_PNG_FILTER_AVG = 64 Paeth -> VIPS_FOREIGN_PNG_FILTER_PAETH = 128 All -> VIPS_FOREIGN_PNG_FILTER_ALL = 248

palette: bool

palette: bool -> Quantise to 8bpp palette default: false

q: i32

q: i32 -> Quantisation quality min: 0, max: 100, default: 100

dither: f64

dither: f64 -> Amount of dithering min: 0, max: 1, default: 1

bitdepth: i32

bitdepth: i32 -> Write as a 1, 2, 4, 8 or 16 bit image min: 1, max: 16, default: 8

effort: i32

effort: i32 -> Quantisation CPU effort min: 1, max: 10, default: 7

keep: ForeignKeep

keep: ForeignKeep -> Which metadata to retain None -> VIPS_FOREIGN_KEEP_NONE = 0 Exif -> VIPS_FOREIGN_KEEP_EXIF = 1 Xmp -> VIPS_FOREIGN_KEEP_XMP = 2 Iptc -> VIPS_FOREIGN_KEEP_IPTC = 4 Icc -> VIPS_FOREIGN_KEEP_ICC = 8 Other -> VIPS_FOREIGN_KEEP_OTHER = 16 All -> VIPS_FOREIGN_KEEP_ALL = 31 [DEFAULT]

background: Vec<f64>

background: Vec<f64> -> Background value

page_height: i32

page_height: i32 -> Set page height for multipage save min: 0, max: 100000000, default: 0

profile: String

profile: String -> Filename of ICC profile to embed

Trait Implementations

impl Clone for PngsaveOptions

fn clone(&self) -> PngsaveOptions

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PngsaveOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PngsaveOptions

fn default() -> Self

Returns the “default value” for a type.