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box-drawing: add infrastructure for rendering box drawing characters ourselves

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* ‘term’ struct contains an array of 160 fcft glyph pointers
* the glyph pointers are lazily allocated when we need to draw a box
  drawings character
* Filtering out box drawings characters is easy - they are (except
  unicode 13, which isn’t handled yet )all in a single range.
This commit is contained in:
Daniel Eklöf 2020-12-26 16:24:16 +01:00
parent 44b32104a7
commit 7acdb3a0dd
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7 changed files with 274 additions and 1 deletions
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7
terminal.c
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@ -1412,6 +1412,13 @@ term_destroy(struct terminal *term)
for (size_t i = 0; i < 4; i++)
free(term->font_sizes[i]);
for (size_t i = 0; i < ALEN(term->box_drawing); i++) {
if (term->box_drawing[i] != NULL) {
pixman_image_unref(term->box_drawing[i]->pix);
free(term->box_drawing[i]);
}
}
free(term->search.buf);
if (term->render.workers.threads != NULL) {