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chore: refactor tiny_ttf file structure (#5120)

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Benign X 2023-12-29 01:05:49 +08:00 committed by GitHub
parent cae3ee9891
commit 88837a1df6
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2 changed files with 158 additions and 105 deletions
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261
src/libs/tiny_ttf/lv_tiny_ttf.c
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@ -1,9 +1,18 @@
#include "lv_tiny_ttf.h"
#if LV_USE_TINY_TTF
#include <stdio.h>
#include "../../core/lv_global.h"
/**
* @file lv_tiny_ttf.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_tiny_ttf.h"
#if LV_USE_TINY_TTF
/*********************
* DEFINES
*********************/
#define STB_RECT_PACK_IMPLEMENTATION
#define STBRP_STATIC
#define STBTT_STATIC
@ -14,9 +23,12 @@
#define STBTT_malloc(x, u) ((void)(u), lv_malloc(x))
#define STBTT_free(x, u) ((void)(u), lv_free(x))
#define tiny_ttf_cache LV_GLOBAL_DEFAULT()->tiny_ttf_cache
#if LV_TINY_TTF_FILE_SUPPORT != 0
/* for stream support */
#define STBTT_STREAM_TYPE ttf_cb_stream_t *
#define STBTT_STREAM_SEEK(s, x) ttf_cb_stream_seek(s, x);
#define STBTT_STREAM_READ(s, x, y) ttf_cb_stream_read(s, x, y);
/* a hydra stream that can be in memory or from a file*/
typedef struct ttf_cb_stream {
lv_fs_file_t * file;
@ -25,6 +37,142 @@ typedef struct ttf_cb_stream {
size_t position;
} ttf_cb_stream_t;
static void ttf_cb_stream_read(ttf_cb_stream_t * stream, void * data, size_t to_read);
static void ttf_cb_stream_seek(ttf_cb_stream_t * stream, size_t position);
#endif
#include "stb_rect_pack.h"
#include "stb_truetype_htcw.h"
#define tiny_ttf_cache LV_GLOBAL_DEFAULT()->tiny_ttf_cache
/**********************
* TYPEDEFS
**********************/
typedef struct ttf_font_desc {
lv_fs_file_t file;
#if LV_TINY_TTF_FILE_SUPPORT != 0
ttf_cb_stream_t stream;
#else
const uint8_t * stream;
#endif
stbtt_fontinfo info;
float scale;
int ascent;
int descent;
} ttf_font_desc_t;
typedef struct _tiny_ttf_cache_data_t {
lv_font_t * font;
uint32_t unicode;
uint32_t size;
uint8_t * buffer;
uint32_t buffer_size;
} tiny_ttf_cache_data_t;
/**********************
* STATIC PROTOTYPES
**********************/
static bool ttf_get_glyph_dsc_cb(const lv_font_t * font, lv_font_glyph_dsc_t * dsc_out, uint32_t unicode_letter,
uint32_t unicode_letter_next);
static const uint8_t * ttf_get_glyph_bitmap_cb(const lv_font_t * font, lv_font_glyph_dsc_t * g_dsc,
uint32_t unicode_letter, uint8_t * bitmap_buf);
static void ttf_release_glyph_cb(const lv_font_t * font, lv_font_glyph_dsc_t * g_dsc);
static lv_result_t lv_tiny_ttf_create(lv_font_t * out_font, const char * path, const void * data, size_t data_size,
int32_t font_size,
size_t cache_size);
static bool tiny_ttf_cache_create_cb(tiny_ttf_cache_data_t * node, void * user_data);
static void tiny_ttf_cache_free_cb(tiny_ttf_cache_data_t * node, void * user_data);
static lv_cache_compare_res_t tiny_ttf_cache_compare_cb(const tiny_ttf_cache_data_t * lhs,
const tiny_ttf_cache_data_t * rhs);
/**********************
* GLOBAL VARIABLES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_result_t lv_tiny_ttf_create_data_ex(lv_font_t * font, const void * data, size_t data_size, int32_t font_size,
size_t cache_size)
{
return lv_tiny_ttf_create(font, NULL, data, data_size, font_size, cache_size);
}
lv_result_t lv_tiny_ttf_create_data(lv_font_t * font, const void * data, size_t data_size, int32_t font_size)
{
return lv_tiny_ttf_create(font, NULL, data, data_size, font_size, 0);
}
void lv_tiny_ttf_set_size(lv_font_t * font, int32_t font_size)
{
if(font_size <= 0) {
LV_LOG_ERROR("invalid font size: %"PRIx32, font_size);
return;
}
ttf_font_desc_t * dsc = (ttf_font_desc_t *)font->dsc;
dsc->scale = stbtt_ScaleForMappingEmToPixels(&dsc->info, font_size);
int line_gap = 0;
stbtt_GetFontVMetrics(&dsc->info, &dsc->ascent, &dsc->descent, &line_gap);
font->line_height = (int32_t)(dsc->scale * (dsc->ascent - dsc->descent + line_gap));
font->base_line = (int32_t)(dsc->scale * (line_gap - dsc->descent));
}
void lv_tiny_ttf_destroy(lv_font_t * font)
{
if(font != NULL) {
if(font->dsc != NULL) {
ttf_font_desc_t * ttf = (ttf_font_desc_t *)font->dsc;
#if LV_TINY_TTF_FILE_SUPPORT != 0
if(ttf->stream.file != NULL) {
lv_fs_close(&ttf->file);
}
#endif
lv_cache_drop_all(tiny_ttf_cache, (void *)font->dsc);
lv_free(ttf);
font->dsc = NULL;
}
}
}
void lv_tiny_ttf_init(void)
{
lv_cache_ops_t ops = {
.compare_cb = (lv_cache_compare_cb_t)tiny_ttf_cache_compare_cb,
.create_cb = (lv_cache_create_cb_t)tiny_ttf_cache_create_cb,
.free_cb = (lv_cache_free_cb_t)tiny_ttf_cache_free_cb,
};
tiny_ttf_cache = lv_cache_create(&lv_cache_class_lru_rb_count, sizeof(tiny_ttf_cache_data_t), 128, ops);
}
void lv_tiny_ttf_deinit(void)
{
lv_cache_destroy(tiny_ttf_cache, NULL);
}
#if LV_TINY_TTF_FILE_SUPPORT != 0
lv_result_t lv_tiny_ttf_create_file_ex(lv_font_t * font, const char * path, int32_t font_size, size_t cache_size)
{
return lv_tiny_ttf_create(font, path, NULL, 0, font_size, cache_size);
}
lv_result_t lv_tiny_ttf_create_file(lv_font_t * font, const char * path, int32_t font_size)
{
return lv_tiny_ttf_create(font, path, NULL, 0, font_size, 0);
}
#endif
/**********************
* STATIC FUNCTIONS
**********************/
#if LV_TINY_TTF_FILE_SUPPORT != 0
static void ttf_cb_stream_read(ttf_cb_stream_t * stream, void * data, size_t to_read)
{
if(stream->file != NULL) {
@ -53,43 +201,8 @@ static void ttf_cb_stream_seek(ttf_cb_stream_t * stream, size_t position)
}
}
}
/* for stream support */
#define STBTT_STREAM_TYPE ttf_cb_stream_t *
#define STBTT_STREAM_SEEK(s, x) ttf_cb_stream_seek(s, x);
#define STBTT_STREAM_READ(s, x, y) ttf_cb_stream_read(s, x, y);
#endif
#include "stb_rect_pack.h"
#include "stb_truetype_htcw.h"
typedef struct ttf_font_desc {
lv_fs_file_t file;
#if LV_TINY_TTF_FILE_SUPPORT != 0
ttf_cb_stream_t stream;
#else
const uint8_t * stream;
#endif
stbtt_fontinfo info;
float scale;
int ascent;
int descent;
} ttf_font_desc_t;
typedef struct _tiny_ttf_cache_data_t {
lv_font_t * font;
uint32_t unicode;
uint32_t size;
uint8_t * buffer;
uint32_t buffer_size;
} tiny_ttf_cache_data_t;
static bool tiny_ttf_cache_create_cb(tiny_ttf_cache_data_t * node, void * user_data);
static void tiny_ttf_cache_free_cb(tiny_ttf_cache_data_t * node, void * user_data);
static lv_cache_compare_res_t tiny_ttf_cache_compare_cb(const tiny_ttf_cache_data_t * lhs,
const tiny_ttf_cache_data_t * rhs);
static bool ttf_get_glyph_dsc_cb(const lv_font_t * font, lv_font_glyph_dsc_t * dsc_out, uint32_t unicode_letter,
uint32_t unicode_letter_next)
{
@ -220,70 +333,10 @@ static lv_result_t lv_tiny_ttf_create(lv_font_t * out_font, const char * path, c
lv_tiny_ttf_set_size(out_font, font_size);
return LV_RESULT_OK;
}
#if LV_TINY_TTF_FILE_SUPPORT != 0
lv_result_t lv_tiny_ttf_create_file_ex(lv_font_t * font, const char * path, int32_t font_size, size_t cache_size)
{
return lv_tiny_ttf_create(font, path, NULL, 0, font_size, cache_size);
}
lv_result_t lv_tiny_ttf_create_file(lv_font_t * font, const char * path, int32_t font_size)
{
return lv_tiny_ttf_create(font, path, NULL, 0, font_size, 0);
}
#endif
lv_result_t lv_tiny_ttf_create_data_ex(lv_font_t * font, const void * data, size_t data_size, int32_t font_size,
size_t cache_size)
{
return lv_tiny_ttf_create(font, NULL, data, data_size, font_size, cache_size);
}
lv_result_t lv_tiny_ttf_create_data(lv_font_t * font, const void * data, size_t data_size, int32_t font_size)
{
return lv_tiny_ttf_create(font, NULL, data, data_size, font_size, 0);
}
void lv_tiny_ttf_set_size(lv_font_t * font, int32_t font_size)
{
if(font_size <= 0) {
LV_LOG_ERROR("invalid font size: %"PRIx32, font_size);
return;
}
ttf_font_desc_t * dsc = (ttf_font_desc_t *)font->dsc;
dsc->scale = stbtt_ScaleForMappingEmToPixels(&dsc->info, font_size);
int line_gap = 0;
stbtt_GetFontVMetrics(&dsc->info, &dsc->ascent, &dsc->descent, &line_gap);
font->line_height = (int32_t)(dsc->scale * (dsc->ascent - dsc->descent + line_gap));
font->base_line = (int32_t)(dsc->scale * (line_gap - dsc->descent));
}
void lv_tiny_ttf_destroy(lv_font_t * font)
{
if(font != NULL) {
if(font->dsc != NULL) {
ttf_font_desc_t * ttf = (ttf_font_desc_t *)font->dsc;
#if LV_TINY_TTF_FILE_SUPPORT != 0
if(ttf->stream.file != NULL) {
lv_fs_close(&ttf->file);
}
#endif
lv_cache_drop_all(tiny_ttf_cache, (void *)font->dsc);
lv_free(ttf);
font->dsc = NULL;
}
}
}
void lv_tiny_ttf_init(void)
{
lv_cache_ops_t ops = {
.compare_cb = (lv_cache_compare_cb_t)tiny_ttf_cache_compare_cb,
.create_cb = (lv_cache_create_cb_t)tiny_ttf_cache_create_cb,
.free_cb = (lv_cache_free_cb_t)tiny_ttf_cache_free_cb,
};
tiny_ttf_cache = lv_cache_create(&lv_cache_class_lru_rb_count, sizeof(tiny_ttf_cache_data_t), 128, ops);
}
void lv_tiny_ttf_deinit(void)
{
lv_cache_destroy(tiny_ttf_cache, NULL);
}
/*-----------------
* Cache Callbacks
*----------------*/
static bool tiny_ttf_cache_create_cb(tiny_ttf_cache_data_t * node, void * user_data)
{

2
src/libs/tiny_ttf/lv_tiny_ttf.h
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@ -1,5 +1,5 @@
/**
* @file lv_templ.h
* @file lv_tiny_ttf.h
*
*/