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Diffstat (limited to 'code/fe310/eos/eve/screen/font.c')
-rw-r--r--code/fe310/eos/eve/screen/font.c61
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;
+} \ No newline at end of file