Kovid Goyal
1ae7ae4a1d
Rendering multiple ligatures in the smae group is bad for performance and also causes incorrect rendering if the last ligature in the group does not fit into the number of cells in the group.
47 lines
2.2 KiB
C
47 lines
2.2 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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#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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// 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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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);
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void cell_metrics(PyObject*, 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);
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PyObject* create_fallback_face(PyObject *base_face, Cell* cell, bool bold, bool italic);
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PyObject* specialize_font_descriptor(PyObject *base_descriptor);
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PyObject* face_from_path(const char *path, int index);
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PyObject* face_from_descriptor(PyObject*);
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void sprite_tracker_current_layout(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(Line *line);
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void sprite_tracker_set_limits(size_t max_texture_size, size_t max_array_len);
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void sprite_tracker_set_layout(unsigned int cell_width, unsigned int cell_height);
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typedef void (*free_extra_data_func)(void*);
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PyObject* ft_face_from_data(const uint8_t* data, size_t sz, void *extra_data, free_extra_data_func fed, PyObject *path, int hinting, int hintstyle, float);
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PyObject* ft_face_from_path_and_psname(PyObject* path, const char* psname, void *extra_data, free_extra_data_func fed, int hinting, int hintstyle, float);
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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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memset(src, 0, sizeof(pixel) * amt);
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}
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}
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