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Image placement using Unicode placeholders

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This commit introduces the Unicode placeholder image placement method.
In particular:
- Virtual placements can be created by passing `U=1` in a put command.
- Images with virtual placements can be displayed using the placeholder
  character `U+10EEEE` with diacritics indicating rows and columns.
- The image ID is indicated by the foreground color of the placeholder.
  Additionally, the most significant byte of the ID can be specified via
  the third diacritic.
- Underline color can be optionally used to specify the placement ID.
- A bug was fixed, which caused incomplete image removal when it was
  overwritten by another image with the same ID.
This commit is contained in:
Sergei Grechanik
2022-10-29 19:48:06 -07:00
parent 1f84e2d4e5
commit d63eeada73
20 changed files with 1288 additions and 17 deletions
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2
kitty/lineops.h
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@@ -112,6 +112,7 @@ void linebuf_rewrap(LineBuf *self, LineBuf *other, index_type *, index_type *, H
void linebuf_mark_line_dirty(LineBuf *self, index_type y);
void linebuf_clear_attrs_and_dirty(LineBuf *self, index_type y);
void linebuf_mark_line_clean(LineBuf *self, index_type y);
void linebuf_set_line_has_image_placeholders(LineBuf *self, index_type y, bool val);
unsigned int linebuf_char_width_at(LineBuf *self, index_type x, index_type y);
void linebuf_set_last_char_as_continuation(LineBuf *self, index_type y, bool continued);
bool linebuf_line_ends_with_continuation(LineBuf *self, index_type y);
@@ -124,6 +125,7 @@ bool history_buf_endswith_wrap(HistoryBuf *self);
CPUCell* historybuf_cpu_cells(HistoryBuf *self, index_type num);
void historybuf_mark_line_clean(HistoryBuf *self, index_type y);
void historybuf_mark_line_dirty(HistoryBuf *self, index_type y);
void historybuf_set_line_has_image_placeholders(HistoryBuf *self, index_type y, bool val);
void historybuf_refresh_sprite_positions(HistoryBuf *self);
void historybuf_clear(HistoryBuf *self);
void mark_text_in_line(PyObject *marker, Line *line);