cairo_format_t: cairo_format_t

In coolbutuseless/cairocore: Low-Level Cairo Bindings

Description

#cairo_format_t is used to identify the memory format of image data.

Usage

cairo_format_t

Format

An object of class list of length 9.

Details

New entries may be added in future versions.

Since: 1.0

CAIRO_FORMAT_INVALID

no such format exists or is supported.

CAIRO_FORMAT_ARGB32

each pixel is a 32-bit quantity, with alpha in the upper 8 bits, then red, then green, then blue. The 32-bit quantities are stored native-endian. Pre-multiplied alpha is used. (That is, 50% transparent red is 0x80800000, not 0x80ff0000.) (Since 1.0)

CAIRO_FORMAT_RGB24

each pixel is a 32-bit quantity, with the upper 8 bits unused. Red, Green, and Blue are stored in the remaining 24 bits in that order. (Since 1.0)

CAIRO_FORMAT_A8

each pixel is a 8-bit quantity holding an alpha value. (Since 1.0)

CAIRO_FORMAT_A1

each pixel is a 1-bit quantity holding an alpha value. Pixels are packed together into 32-bit quantities. The ordering of the bits matches the endianness of the platform. On a big-endian machine, the first pixel is in the uppermost bit, on a little-endian machine the first pixel is in the least-significant bit. (Since 1.0)

CAIRO_FORMAT_RGB16_565

each pixel is a 16-bit quantity with red in the upper 5 bits, then green in the middle 6 bits, and blue in the lower 5 bits. (Since 1.2)

CAIRO_FORMAT_RGB30

like RGB24 but with 10bpc. (Since 1.12)

CAIRO_FORMAT_RGB96F

3 floats, R, G, B. (Since 1.17.2)

CAIRO_FORMAT_RGBA128F

4 floats, R, G, B, A. (Since 1.17.2)

See Also

Other enum: cairo_antialias_t, cairo_content_t, cairo_device_type_t, cairo_extend_t, cairo_fill_rule_t, cairo_filter_t, cairo_font_slant_t, cairo_font_type_t, cairo_font_weight_t, cairo_ft_synthesize_t, cairo_hint_metrics_t, cairo_hint_style_t, cairo_int_status_t, cairo_line_cap_t, cairo_line_join_t, cairo_operator_t, cairo_path_data_type_t, cairo_pattern_type_t, cairo_pdf_metadata_t, cairo_pdf_outline_flags_t, cairo_pdf_version_t, cairo_ps_level_t, cairo_region_overlap_t, cairo_status_t, cairo_subpixel_order_t, cairo_surface_observer_mode_t, cairo_surface_type_t, cairo_svg_unit_t, cairo_svg_version_t, cairo_text_cluster_flags_t, enum_find(), enum_lookup()

coolbutuseless/cairocore documentation built on Aug. 31, 2020, 12:43 a.m.