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foot/sixel.h

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sixel: initial support This implements basic parsing of sixel data. Lots of limitations and temporary solutions as this is still work-in-progress: * Maximum image size hardcoded to 800x800 * No HLS color format support * Image is always rendered at 0x0 in the terminal
2020-02-21 21:53:23 +01:00
#pragma once
#include "terminal.h"
sixel: application configurable palette size (color count) This implements the CSI escapes for retrieving and (re)setting the palette size.
2020-02-22 14:02:00 +01:00
#define SIXEL_MAX_COLORS 1024u
sixel: do not reset palette after each image A client can re-use the palette between images. Resetting the palette breaks this. Now we initialize the palette on demand, and resets it when the palette size is changed (by the client).
2020-06-10 18:36:54 +02:00
void sixel_fini(struct terminal *term);
sixel: initial support This implements basic parsing of sixel data. Lots of limitations and temporary solutions as this is still work-in-progress: * Maximum image size hardcoded to 800x800 * No HLS color format support * Image is always rendered at 0x0 in the terminal
2020-02-21 21:53:23 +01:00
void sixel_init(struct terminal *term);
void sixel_put(struct terminal *term, uint8_t c);
void sixel_unhook(struct terminal *term);
sixel: add sixel_destroy()
2020-02-22 00:23:19 +01:00
void sixel_destroy(struct sixel *sixel);
sixel: add sixel_delete_at_row and sixel_delete_in_range These are utility functions to erase sixel images that are at the specified row, or in a row range.
2020-02-24 18:39:14 +01:00
sixel: refactor handling of wrap-around delete- and split regions Handle these on a higher abstraction level. The low level functions that detect sixel intersections now assume the specified rectangle (or line region) does *not* cross the wrap-around. This is ensured by detecting a wrap-around region before hand, and splitting it up into two, non wrapping regions.
2020-06-27 13:56:13 +02:00
/* Row numbers are relative to current grid offset */
void sixel_delete_in_range(struct terminal *term, int row_start, int row_end);
void sixel_delete_at_row(struct terminal *term, int row);
sixel: wip: split up image being overwritten, rather than erasing it Instead of completely erasing a sixel image when it is being "overwritten" (text is printed somewhere within the image, or another sixel image is emitted within the first image), split it up into up to four pieces: 'above', 'below', 'to-the-left' and 'to-the-right'. This is currently very un-optimized, but seems to produce correct results.
2020-06-23 21:07:12 +02:00
void sixel_split_at_cursor(struct terminal *term);
sixel: application configurable palette size (color count) This implements the CSI escapes for retrieving and (re)setting the palette size.
2020-02-22 14:02:00 +01:00
void sixel_colors_report_current(struct terminal *term);
void sixel_colors_reset(struct terminal *term);
void sixel_colors_set(struct terminal *term, unsigned count);
void sixel_colors_report_max(struct terminal *term);
sixel: application configurable image max width/height
2020-02-22 21:03:24 +01:00
void sixel_geometry_report_current(struct terminal *term);
void sixel_geometry_reset(struct terminal *term);
void sixel_geometry_set(struct terminal *term, unsigned width, unsigned height);
void sixel_geometry_report_max(struct terminal *term);
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