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128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/**
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* File: font_gen.c
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* Author: AWTK Develop Team
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* Brief: bitmap font generator
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*
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* Copyright (c) 2018 - 2020 Guangzhou ZHIYUAN Electronics Co.,Ltd.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* License file for more details.
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*
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*/
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/**
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* History:
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* ================================================================
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* 2018-01-21 Li XianJing <xianjimli@hotmail.com> created
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*
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*/
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#include <wctype.h>
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#include "tkc/mem.h"
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#include "tkc/utf8.h"
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#include "base/bitmap.h"
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#include "common/utils.h"
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#include "font_gen/font_gen.h"
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#include "base/assets_manager.h"
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#include "font_loader/font_loader_stb.h"
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#include "font_loader/font_loader_bitmap.h"
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#define MAX_CHARS 100 * 1024
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#define MAX_BUFF_SIZE 1 * 1024 * 1024
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static int char_cmp(const void* a, const void* b) {
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wchar_t c1 = *(wchar_t*)a;
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wchar_t c2 = *(wchar_t*)b;
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return c1 - c2;
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}
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ret_t font_gen(font_t* font, uint16_t font_size, const char* str, const char* output_filename,
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const char* theme) {
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wbuffer_t wbuffer;
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wbuffer_init_extendable(&wbuffer);
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uint32_t size = font_gen_buff(font, font_size, str, &wbuffer);
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output_res_c_source(output_filename, theme, ASSET_TYPE_FONT, ASSET_TYPE_FONT_BMP, wbuffer.data,
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size);
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wbuffer_deinit(&wbuffer);
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return RET_OK;
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}
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uint32_t font_gen_buff(font_t* font, uint16_t font_size, const char* str, wbuffer_t* wbuffer) {
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int i = 0;
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glyph_t g;
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int size = 0;
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uint8_t* p = NULL;
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wchar_t wstr[MAX_CHARS];
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font_vmetrics_t vmetrics = font_get_vmetrics(font, font_size);
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tk_utf8_to_utf16(str, wstr, MAX_CHARS);
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size = wcslen(wstr);
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qsort(wstr, size, sizeof(wchar_t), char_cmp);
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size = unique(wstr, size);
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int32_t header_size = sizeof(font_bitmap_header_t) + (size - 1) * sizeof(font_bitmap_index_t);
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font_bitmap_header_t* header = (font_bitmap_header_t*)TKMEM_ALLOC(header_size);
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memset(header, 0, header_size);
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wbuffer_write_binary(wbuffer, header, header_size);
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header->char_nr = size;
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header->font_size = (uint8_t)font_size;
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header->ascent = vmetrics.ascent;
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header->descent = vmetrics.descent;
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header->line_gap = vmetrics.line_gap;
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for (i = 0; i < size; i++) {
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wchar_t c = wstr[i];
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header->index[i].c = c;
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header->index[i].offset = wbuffer->cursor;
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printf("%d/%d: 0x%04x\n", i, size, c);
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if (font_get_glyph(font, c, font_size, &g) == RET_OK) {
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uint32_t data_size = (g.pitch ? g.pitch : g.w) * g.h;
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wbuffer_write_uint16(wbuffer, g.x);
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wbuffer_write_uint16(wbuffer, g.y);
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wbuffer_write_uint16(wbuffer, g.w);
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wbuffer_write_uint16(wbuffer, g.h);
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wbuffer_write_uint16(wbuffer, g.advance);
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wbuffer_write_uint8(wbuffer, g.format);
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wbuffer_write_uint8(wbuffer, g.pitch);
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if (g.data != NULL) {
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wbuffer_write_binary(wbuffer, g.data, data_size);
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}
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if (g.format == GLYPH_FMT_MONO) {
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bitmap_mono_dump(g.data, g.w, g.h);
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}
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} else if (c > 32 && c != 65279) {
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wchar_t arr[] = {c};
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char utf8_arr[6] = {0};
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tk_utf8_from_utf16(arr, utf8_arr, 6);
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printf(
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"gen fail, filename = ! desc = unable to find '%s' in TTF, please modify the setting of "
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"font cropping.!\n",
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utf8_arr);
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exit(0);
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} else {
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header->index[i].offset = 0;
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}
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}
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size = wbuffer->cursor;
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wbuffer->cursor = 0;
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wbuffer_write_binary(wbuffer, header, header_size);
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wbuffer->cursor = size;
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TKMEM_FREE(header);
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return size;
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}
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