mirror of
https://github.com/kovidgoyal/kitty
synced 2026-07-07 17:43:53 +02:00
931e91f1a7
This reads the strikethrough position and thickness from the font so it is rendered correctly. This is only implemented for FreeType, not Core Text, because I didn't find any way to get the info from Core Text, and I don't have a Mac to test it on either. When using Core Text or when the font doesn't provide the info, the same approximation as before is used.
53 lines
2.5 KiB
C
53 lines
2.5 KiB
C
/*
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* Copyright (C) 2017 Kovid Goyal <kovid at kovidgoyal.net>
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*
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* Distributed under terms of the GPL3 license.
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*/
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#pragma once
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#include "lineops.h"
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#include "state.h"
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpedantic"
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#include <hb.h>
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#pragma GCC diagnostic pop
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typedef struct {
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uint8_t *canvas;
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size_t width, height;
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} StringCanvas;
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// API that font backends need to implement
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typedef uint16_t glyph_index;
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unsigned int glyph_id_for_codepoint(PyObject *, char_type);
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int get_glyph_width(PyObject *, glyph_index);
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bool is_glyph_empty(PyObject *, glyph_index);
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hb_font_t* harfbuzz_font_for_face(PyObject*);
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bool set_size_for_face(PyObject*, unsigned int, bool, FONTS_DATA_HANDLE);
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void cell_metrics(PyObject*, unsigned int*, unsigned int*, unsigned int*, unsigned int*, unsigned int*, unsigned int*, unsigned int*);
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bool render_glyphs_in_cells(PyObject *f, bool bold, bool italic, hb_glyph_info_t *info, hb_glyph_position_t *positions, unsigned int num_glyphs, pixel *canvas, unsigned int cell_width, unsigned int cell_height, unsigned int num_cells, unsigned int baseline, bool *was_colored, FONTS_DATA_HANDLE, bool center_glyph);
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PyObject* create_fallback_face(PyObject *base_face, CPUCell* cell, bool bold, bool italic, bool emoji_presentation, FONTS_DATA_HANDLE fg);
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PyObject* specialize_font_descriptor(PyObject *base_descriptor, FONTS_DATA_HANDLE);
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PyObject* face_from_path(const char *path, int index, FONTS_DATA_HANDLE);
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PyObject* face_from_descriptor(PyObject*, FONTS_DATA_HANDLE);
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const char* postscript_name_for_face(const PyObject*);
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void sprite_tracker_current_layout(FONTS_DATA_HANDLE data, unsigned int *x, unsigned int *y, unsigned int *z);
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void render_alpha_mask(uint8_t *alpha_mask, pixel* dest, Region *src_rect, Region *dest_rect, size_t src_stride, size_t dest_stride);
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void render_line(FONTS_DATA_HANDLE, Line *line, index_type lnum, Cursor *cursor, DisableLigature);
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void sprite_tracker_set_limits(size_t max_texture_size, size_t max_array_len);
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typedef void (*free_extra_data_func)(void*);
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StringCanvas render_simple_text_impl(PyObject *s, const char *text, unsigned int baseline);
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StringCanvas render_simple_text(FONTS_DATA_HANDLE fg_, const char *text);
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static inline void
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right_shift_canvas(pixel *canvas, size_t width, size_t height, size_t amt) {
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pixel *src;
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size_t r;
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for (r = 0, src = canvas; r < height; r++, src += width) {
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memmove(src + amt, src, sizeof(pixel) * (width - amt));
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zero_at_ptr_count(src, amt);
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}
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}
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