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MarlinFirmware/Marlin/src/lcd/u8g_fontutf8.cpp
2018-09-30 23:44:33 -05:00

321 lines
9.6 KiB
C++

/**
* @file u8g_fontutf8.cpp
* @brief font api for u8g lib
* @author Yunhui Fu (yhfudev@gmail.com)
* @version 1.0
* @date 2015-02-19
* @copyright GPL/BSD
*/
#include "../inc/MarlinConfigPre.h"
#if ENABLED(DOGLCD)
#include <string.h>
#include "fontutils.h"
#include "u8g_fontutf8.h"
////////////////////////////////////////////////////////////
typedef void font_t;
/**
* @brief the callback function to draw something
*
* @param userdata : User's data
* @param msg : the u8g's string
* @param fnt_current : the font
*
* @return 0 on success, 1 to force quit, <0 on error
*
* Get the screen pixel width of a ROM UTF-8 string
*/
typedef int (* fontgroup_cb_draw_t)(void *userdata, const font_t *fnt_current, const char *msg);
////////////////////////////////////////////////////////////
/* return v1 - v2 */
static int fontinfo_compare(uxg_fontinfo_t * v1, uxg_fontinfo_t * v2) {
if (v1->page < v2->page) return -1;
else if (v1->page > v2->page) return 1;
if (v1->end < v2->begin) return -1;
else if (v1->begin > v2->end) return 1;
return 0;
}
/*"data_list[idx] - *data_pin"*/
static int pf_bsearch_cb_comp_fntifo_pgm (void *userdata, size_t idx, void *data_pin) {
uxg_fontinfo_t *fntinfo = (uxg_fontinfo_t*)userdata;
uxg_fontinfo_t localval;
memcpy_P(&localval, fntinfo + idx, sizeof(localval));
return fontinfo_compare(&localval, (uxg_fontinfo_t*)data_pin);
}
typedef struct _font_group_t {
const uxg_fontinfo_t * m_fntifo;
int m_fntinfo_num;
} font_group_t;
static int fontgroup_init(font_group_t * root, const uxg_fontinfo_t * fntinfo, int number) {
root->m_fntifo = fntinfo;
root->m_fntinfo_num = number;
return 0;
}
static const font_t* fontgroup_find(font_group_t * root, wchar_t val) {
uxg_fontinfo_t vcmp = {(uint16_t)(val / 128), (uint8_t)(val % 128 + 128), (uint8_t)(val % 128 + 128), 0, 0};
size_t idx = 0;
if (val < 256) return NULL;
if (pf_bsearch_r((void*)root->m_fntifo, root->m_fntinfo_num, pf_bsearch_cb_comp_fntifo_pgm, (void*)&vcmp, &idx) < 0)
return NULL;
memcpy_P(&vcmp, root->m_fntifo + idx, sizeof(vcmp));
return vcmp.fntdata;
}
static void fontgroup_drawwchar(font_group_t *group, const font_t *fnt_default, wchar_t val, void * userdata, fontgroup_cb_draw_t cb_draw_ram) {
uint8_t buf[2] = {0, 0};
const font_t * fntpqm = (font_t*)fontgroup_find(group, val);
if (!fntpqm) {
// Unknown char, use default font
buf[0] = (uint8_t)(val & 0xFF);
fntpqm = fnt_default;
}
if (fnt_default != fntpqm) {
buf[0] = (uint8_t)(val & 0x7F);
buf[0] |= 0x80; // use upper page to avoid 0x00 error in C. you may want to generate the font data
}
cb_draw_ram (userdata, fntpqm, (char*) buf);
}
/**
* @brief try to process a utf8 string
*
* @param pu8g : U8G pointer
* @param fnt_default : the default font
* @param utf8_msg : the UTF-8 string
* @param cb_read_byte : how to read the utf8_msg, from RAM or ROM (call read_byte_ram or pgm_read_byte)
* @param userdata : User's data
* @param cb_draw_ram : the callback function of userdata to draw a !RAM! string (actural it is to draw a one byte string in RAM)
*
* @return N/A
*
* Get the screen pixel width of a ROM UTF-8 string
*/
static void fontgroup_drawstring(font_group_t *group, const font_t *fnt_default, const char *utf8_msg, read_byte_cb_t cb_read_byte, void * userdata, fontgroup_cb_draw_t cb_draw_ram) {
uint8_t *p = (uint8_t*)utf8_msg;
for (;;) {
wchar_t val = 0;
p = get_utf8_value_cb(p, cb_read_byte, &val);
if (!val) break;
fontgroup_drawwchar(group, fnt_default, val, userdata, cb_draw_ram);
}
}
////////////////////////////////////////////////////////////
static bool flag_fontgroup_was_inited = false;
static font_group_t g_fontgroup_root = {NULL, 0};
/**
* @brief check if font is loaded
*/
static inline bool uxg_Utf8FontIsInited(void) { return flag_fontgroup_was_inited; }
int uxg_SetUtf8Fonts (const uxg_fontinfo_t * fntinfo, int number) {
flag_fontgroup_was_inited = 1;
return fontgroup_init(&g_fontgroup_root, fntinfo, number);
}
struct _uxg_drawu8_data_t {
u8g_t *pu8g;
unsigned int x;
unsigned int y;
unsigned int adv;
unsigned int max_width; // the max pixel width of the string allowed
const void * fnt_prev;
};
static int fontgroup_cb_draw_u8g(void *userdata, const font_t *fnt_current, const char *msg) {
struct _uxg_drawu8_data_t * pdata = (_uxg_drawu8_data_t*)userdata;
if (pdata->fnt_prev != fnt_current) {
u8g_SetFont(pdata->pu8g, (const u8g_fntpgm_uint8_t*)fnt_current);
//u8g_SetFontPosBottom(pdata->pu8g);
pdata->fnt_prev = fnt_current;
}
if ((pdata->max_width != PIXEL_LEN_NOLIMIT) && (pdata->adv + u8g_GetStrPixelWidth(pdata->pu8g, (char*)msg) > pdata->max_width))
return 1;
pdata->adv += u8g_DrawStr(pdata->pu8g, pdata->x + pdata->adv, pdata->y, (char*) msg);
return 0;
}
/**
* @brief Draw a wchar_t at the specified position
*
* @param pu8g : U8G pointer
* @param x : position x axis
* @param y : position y axis
* @param ch : the wchar_t
* @param max_width : the pixel width of the string allowed
*
* @return number of pixels advanced
*
* Draw a UTF-8 string at the specified position
*/
unsigned int uxg_DrawWchar(u8g_t *pu8g, unsigned int x, unsigned int y, wchar_t ch, pixel_len_t max_width) {
struct _uxg_drawu8_data_t data;
font_group_t *group = &g_fontgroup_root;
const font_t *fnt_default = uxg_GetFont(pu8g);
if (!uxg_Utf8FontIsInited()) {
u8g_DrawStrP(pu8g, x, y, (const u8g_pgm_uint8_t *)PSTR("Err: utf8 font not initialized."));
return 0;
}
data.pu8g = pu8g;
data.x = x;
data.y = y;
data.adv = 0;
data.max_width = max_width;
data.fnt_prev = NULL;
fontgroup_drawwchar(group, fnt_default, ch, (void*)&data, fontgroup_cb_draw_u8g);
u8g_SetFont(pu8g, (const u8g_fntpgm_uint8_t*)fnt_default);
return data.adv;
}
/**
* @brief Draw a UTF-8 string at the specified position
*
* @param pu8g : U8G pointer
* @param x : position x axis
* @param y : position y axis
* @param utf8_msg : the UTF-8 string
* @param max_width : the pixel width of the string allowed
*
* @return number of pixels advanced
*
* Draw a UTF-8 string at the specified position
*/
unsigned int uxg_DrawUtf8Str(u8g_t *pu8g, unsigned int x, unsigned int y, const char *utf8_msg, pixel_len_t max_width) {
struct _uxg_drawu8_data_t data;
font_group_t *group = &g_fontgroup_root;
const font_t *fnt_default = uxg_GetFont(pu8g);
if (!uxg_Utf8FontIsInited()) {
u8g_DrawStrP(pu8g, x, y, (const u8g_pgm_uint8_t *)PSTR("Err: utf8 font not initialized."));
return 0;
}
data.pu8g = pu8g;
data.x = x;
data.y = y;
data.adv = 0;
data.max_width = max_width;
data.fnt_prev = NULL;
fontgroup_drawstring(group, fnt_default, utf8_msg, read_byte_ram, (void*)&data, fontgroup_cb_draw_u8g);
u8g_SetFont(pu8g, (const u8g_fntpgm_uint8_t*)fnt_default);
return data.adv;
}
/**
* @brief Draw a ROM UTF-8 string at the specified position
*
* @param pu8g : U8G pointer
* @param x : position x axis
* @param y : position y axis
* @param utf8_msg : the UTF-8 string
* @param max_width : the pixel width of the string allowed
*
* @return number of pixels advanced
*
* Draw a ROM UTF-8 string at the specified position
*/
unsigned int uxg_DrawUtf8StrP(u8g_t *pu8g, unsigned int x, unsigned int y, PGM_P utf8_msg, pixel_len_t max_width) {
struct _uxg_drawu8_data_t data;
font_group_t *group = &g_fontgroup_root;
const font_t *fnt_default = uxg_GetFont(pu8g);
if (!uxg_Utf8FontIsInited()) {
u8g_DrawStrP(pu8g, x, y, (const u8g_pgm_uint8_t *)PSTR("Err: utf8 font not initialized."));
return 0;
}
data.pu8g = pu8g;
data.x = x;
data.y = y;
data.adv = 0;
data.max_width = max_width;
data.fnt_prev = NULL;
fontgroup_drawstring(group, fnt_default, utf8_msg, read_byte_rom, (void*)&data, fontgroup_cb_draw_u8g);
u8g_SetFont(pu8g, (const u8g_fntpgm_uint8_t*)fnt_default);
return data.adv;
}
static int fontgroup_cb_draw_u8gstrlen(void *userdata, const font_t *fnt_current, const char *msg) {
struct _uxg_drawu8_data_t * pdata = (_uxg_drawu8_data_t*)userdata;
if (pdata->fnt_prev != fnt_current) {
u8g_SetFont(pdata->pu8g, (const u8g_fntpgm_uint8_t*)fnt_current);
u8g_SetFontPosBottom(pdata->pu8g);
pdata->fnt_prev = fnt_current;
}
pdata->adv += u8g_GetStrPixelWidth(pdata->pu8g, (char*)msg);
return 0;
}
/**
* @brief Get the screen pixel width of a UTF-8 string
*
* @param pu8g : U8G pointer
* @param utf8_msg : the UTF-8 string
*
* @return the pixel width
*
* Get the screen pixel width of a UTF-8 string
*/
int uxg_GetUtf8StrPixelWidth(u8g_t *pu8g, const char *utf8_msg) {
struct _uxg_drawu8_data_t data;
font_group_t *group = &g_fontgroup_root;
const font_t *fnt_default = uxg_GetFont(pu8g);
if (!uxg_Utf8FontIsInited()) return -1;
memset(&data, 0, sizeof(data));
data.pu8g = pu8g;
data.adv = 0;
fontgroup_drawstring(group, fnt_default, utf8_msg, read_byte_ram, (void*)&data, fontgroup_cb_draw_u8gstrlen);
u8g_SetFont(pu8g, (const u8g_fntpgm_uint8_t*)fnt_default);
return data.adv;
}
/**
* @brief Get the screen pixel width of a ROM UTF-8 string
*
* @param pu8g : U8G pointer
* @param utf8_msg : the UTF-8 string
*
* @return the pixel width
*
* Get the screen pixel width of a ROM UTF-8 string
*/
int uxg_GetUtf8StrPixelWidthP(u8g_t *pu8g, PGM_P utf8_msg) {
struct _uxg_drawu8_data_t data;
font_group_t *group = &g_fontgroup_root;
const font_t *fnt_default = uxg_GetFont(pu8g);
if (!uxg_Utf8FontIsInited()) return -1;
memset(&data, 0, sizeof(data));
data.pu8g = pu8g;
data.adv = 0;
fontgroup_drawstring(group, fnt_default, utf8_msg, read_byte_rom, (void*)&data, fontgroup_cb_draw_u8gstrlen);
u8g_SetFont(pu8g, (const u8g_fntpgm_uint8_t*)fnt_default);
return data.adv;
}
#endif // DOGLCD