diff options
Diffstat (limited to 'code/fe310/eos/eve/screen/font.c')
| -rw-r--r-- | code/fe310/eos/eve/screen/font.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/code/fe310/eos/eve/screen/font.c b/code/fe310/eos/eve/screen/font.c new file mode 100644 index 0000000..da02983 --- /dev/null +++ b/code/fe310/eos/eve/screen/font.c @@ -0,0 +1,61 @@ +#include <stdlib.h> + +#include "eve.h" +#include "unicode.h" + +#include "font.h" + +void eve_font_init(EVEFont *font, uint8_t font_id) { + uint32_t p; + + p = eve_read32(EVE_ROM_FONT_ADDR); + p += (148 * (font_id - 16)); + font->id = font_id; + font->w = eve_read32(p + 136); + font->h = eve_read32(p + 140); + eve_readb(p, font->w_ch, 128); +} + +uint8_t eve_font_ch_w(EVEFont *font, utf32_t ch) { + if (ch < 128) return font->w_ch[ch]; + return 0; +} + +uint16_t eve_font_str_w(EVEFont *font, utf8_t *str) { + uint16_t r = 0; + utf32_t ch; + uint8_t ch_w; + uint8_t ch_l; + + if (str == NULL) return 0; + + while (*str) { + ch_l = utf8_dec(str, &ch); + ch_w = eve_font_ch_w(font, ch); + r += ch_w; + str += ch_l; + } + + return r; +} + +uint16_t eve_font_buf_w(EVEFont *font, utf8_t *buf, uint16_t buf_len) { + int i = 0; + uint16_t r = 0; + utf32_t ch; + uint8_t ch_w; + uint8_t ch_l; + + while (i < buf_len) { + ch_l = utf8_dec(buf + i, &ch); + ch_w = eve_font_ch_w(font, ch); + r += ch_w; + i += ch_l; + } + + return r; +} + +uint8_t eve_font_h(EVEFont *font) { + return font->h; +}
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