From 7fd1e894f5a02170171010e3f42e66a3b418fdb7 Mon Sep 17 00:00:00 2001
From: Pavol Rusnak <stick@gk2.sk>
Date: Fri, 13 Feb 2015 15:37:23 +0100
Subject: [PATCH] refactor font handling

---
 firmware/layout2.c    |   6 +-
 gen/fonts.c           | 374 +++++++++++++++++++++++++++++-------------
 gen/fonts.h           |   8 +-
 gen/fonts/font.png    | Bin 1114 -> 1196 bytes
 gen/fonts/generate.py |   5 +-
 layout.c              |  12 +-
 oled.c                |  39 ++---
 oled.h                |   1 +
 8 files changed, 297 insertions(+), 148 deletions(-)

diff --git a/firmware/layout2.c b/firmware/layout2.c
index 796d1f3..6ea2b0a 100644
--- a/firmware/layout2.c
+++ b/firmware/layout2.c
@@ -252,9 +252,9 @@ void layoutAddress(const char *address)
 	oledDrawString(68, 3 * 9, str[3]);
 
 	static const char *btnYes = "Continue";
-	oledDrawString(OLED_WIDTH - fontCharWidth('}') - 1, OLED_HEIGHT - 8, "}");
-	oledDrawString(OLED_WIDTH - fontStringWidth(btnYes) - fontCharWidth('}') - 3, OLED_HEIGHT - 8, btnYes);
-	oledInvert(OLED_WIDTH - fontStringWidth(btnYes) - fontCharWidth('}') - 4, OLED_HEIGHT - 9, OLED_WIDTH - 1, OLED_HEIGHT - 1);
+	oledDrawString(OLED_WIDTH - fontCharWidth('\xff') - 1, OLED_HEIGHT - 8, "\xff");
+	oledDrawString(OLED_WIDTH - oledStringWidth(btnYes) - fontCharWidth('\xff') - 3, OLED_HEIGHT - 8, btnYes);
+	oledInvert(OLED_WIDTH - oledStringWidth(btnYes) - fontCharWidth('\xff') - 4, OLED_HEIGHT - 9, OLED_WIDTH - 1, OLED_HEIGHT - 1);
 
 	oledRefresh();
 }
diff --git a/gen/fonts.c b/gen/fonts.c
index d562c1d..af05044 100644
--- a/gen/fonts.c
+++ b/gen/fonts.c
@@ -1,122 +1,268 @@
 #include "fonts.h"
 
-const uint8_t *font_data[FONT_END - FONT_START + 1] = {
-	(uint8_t *)"\x01\x00",
-	(uint8_t *)"\x02\xfa\xfa",
-	(uint8_t *)"\x03\xc0\x00\xc0",
-	(uint8_t *)"\x05\x6c\xfe\x6c\xfe\x6c",
-	(uint8_t *)"\x05\x32\xff\x5a\xff\x4c",
-	(uint8_t *)"\x06\xc0\xc6\x1c\x70\xc6\x06",
-	(uint8_t *)"\x06\x5c\xfe\xb2\xfe\x4c\x1e",
-	(uint8_t *)"\x01\xc0",
-	(uint8_t *)"\x03\x38\x7c\x82",
-	(uint8_t *)"\x03\x82\x7c\x38",
-	(uint8_t *)"\x05\x6c\x38\xfe\x38\x6c",
-	(uint8_t *)"\x05\x10\x10\x7c\x10\x10",
-	(uint8_t *)"\x02\x03\x06",
-	(uint8_t *)"\x04\x10\x10\x10\x10",
-	(uint8_t *)"\x02\x06\x06",
-	(uint8_t *)"\x03\x0e\x38\xe0",
-	(uint8_t *)"\x05\x7c\xfe\x82\xfe\x7c",
-	(uint8_t *)"\x03\x40\xfe\xfe",
-	(uint8_t *)"\x05\x8e\x9e\x92\xf2\x62",
-	(uint8_t *)"\x05\x82\x92\x92\xfe\x6c",
-	(uint8_t *)"\x05\x18\x28\x48\xfe\xfe",
-	(uint8_t *)"\x05\xe2\xa2\xa2\xbe\x1c",
-	(uint8_t *)"\x05\x7c\xfe\xa2\xbe\x1c",
-	(uint8_t *)"\x05\x80\x8e\xbe\xf0\xc0",
-	(uint8_t *)"\x05\x6c\xfe\x92\xfe\x6c",
-	(uint8_t *)"\x05\x70\xfa\x8a\xfe\x7c",
-	(uint8_t *)"\x02\x36\x36",
-	(uint8_t *)"\x02\x33\x36",
-	(uint8_t *)"\x04\x10\x38\x6c\xc6",
-	(uint8_t *)"\x04\x28\x28\x28\x28",
-	(uint8_t *)"\x04\xc6\x6c\x38\x10",
-	(uint8_t *)"\x05\x80\x9a\xba\xe0\x40",
-	(uint8_t *)"\x06\x7c\xfe\xaa\xba\xfa\x78",
-	(uint8_t *)"\x05\x7e\xfe\x88\xfe\x7e",
-	(uint8_t *)"\x05\xfe\xfe\xa2\xfe\x5c",
-	(uint8_t *)"\x05\x7c\xfe\x82\x82\x82",
-	(uint8_t *)"\x05\xfe\xfe\x82\xfe\x7c",
-	(uint8_t *)"\x05\xfe\xfe\xa2\xa2\x82",
-	(uint8_t *)"\x05\xfe\xfe\xa0\xa0\x80",
-	(uint8_t *)"\x05\x7c\xfe\x82\x9e\x1e",
-	(uint8_t *)"\x05\xfe\xfe\x20\xfe\xfe",
-	(uint8_t *)"\x02\xfe\xfe",
-	(uint8_t *)"\x04\x02\x02\xfe\xfc",
-	(uint8_t *)"\x06\xfe\xfe\x38\x6c\xc6\x82",
-	(uint8_t *)"\x04\xfe\xfe\x02\x02",
-	(uint8_t *)"\x07\xfe\x7e\x30\x18\x30\x7e\xfe",
-	(uint8_t *)"\x06\xfe\x7e\x30\x18\xfc\xfe",
-	(uint8_t *)"\x06\x7c\xfe\x82\x82\xfe\x7c",
-	(uint8_t *)"\x05\xfe\xfe\x88\xf8\x70",
-	(uint8_t *)"\x06\x7c\xfe\x82\x86\xff\x7d",
-	(uint8_t *)"\x05\xfe\xfe\x88\xfe\x72",
-	(uint8_t *)"\x04\x62\xf2\x9e\x8c",
-	(uint8_t *)"\x06\x80\x80\xfe\xfe\x80\x80",
-	(uint8_t *)"\x05\xfc\xfe\x02\xfe\xfc",
-	(uint8_t *)"\x06\xe0\xf8\x1e\x1e\xf8\xe0",
-	(uint8_t *)"\x07\xf0\xfe\x1e\x3c\x1e\xfe\xf0",
-	(uint8_t *)"\x06\xc6\xee\x38\x38\xee\xc6",
-	(uint8_t *)"\x06\xc0\xe0\x3e\x3e\xe0\xc0",
-	(uint8_t *)"\x05\x8e\x9e\xba\xf2\xe2",
-	(uint8_t *)"\x03\xfe\xfe\x82",
-	(uint8_t *)"\x03\xe0\x38\x0e",
-	(uint8_t *)"\x03\x82\xfe\xfe",
-	(uint8_t *)"\x03\x60\xc0\x60",
-	(uint8_t *)"\x06\x02\x02\x02\x02\x02\x02",
-	(uint8_t *)"\x02\x80\x40",
-	(uint8_t *)"\x05\x04\x2e\x2a\x3e\x1e",
-	(uint8_t *)"\x05\xfe\xfe\x22\x3e\x1c",
-	(uint8_t *)"\x04\x1c\x3e\x22\x22",
-	(uint8_t *)"\x05\x1c\x3e\x22\xfe\xfe",
-	(uint8_t *)"\x05\x1c\x3e\x2a\x3a\x1a",
-	(uint8_t *)"\x03\x7e\xfe\xa0",
-	(uint8_t *)"\x05\x18\x3d\x25\x3f\x3e",
-	(uint8_t *)"\x05\xfe\xfe\x20\x3e\x1e",
-	(uint8_t *)"\x02\xbe\xbe",
-	(uint8_t *)"\x03\x01\xbf\xbe",
-	(uint8_t *)"\x05\xfe\xfe\x1c\x36\x22",
-	(uint8_t *)"\x02\xfe\xfe",
-	(uint8_t *)"\x08\x3e\x3e\x20\x3e\x3e\x20\x3e\x1e",
-	(uint8_t *)"\x05\x3e\x3e\x20\x3e\x1e",
-	(uint8_t *)"\x05\x1c\x3e\x22\x3e\x1c",
-	(uint8_t *)"\x05\x3f\x3f\x24\x3c\x18",
-	(uint8_t *)"\x05\x18\x3c\x24\x3f\x3f",
-	(uint8_t *)"\x04\x3e\x3e\x10\x30",
-	(uint8_t *)"\x04\x1a\x3a\x2e\x2c",
-	(uint8_t *)"\x03\xfc\xfe\x22",
-	(uint8_t *)"\x05\x3c\x3e\x02\x3e\x3e",
-	(uint8_t *)"\x05\x30\x3c\x0e\x3c\x30",
-	(uint8_t *)"\x07\x38\x3e\x06\x1c\x06\x3e\x38",
-	(uint8_t *)"\x05\x36\x3e\x08\x3e\x36",
-	(uint8_t *)"\x05\x38\x3d\x05\x3f\x3e",
-	(uint8_t *)"\x05\x26\x2e\x3a\x32\x22",
-	(uint8_t *)"\x04\x10\x7c\xee\x82",
-	(uint8_t *)"\x02\xff\xff",
-	(uint8_t *)"\x04\x82\xee\x7c\x10",
-	(uint8_t *)"\x04\x08\x10\x08\x10",
-	(uint8_t *)"\x02\x00\x00",
-	(uint8_t *)"\x07\x44\xee\x7c\x38\x7c\xee\x44",
-	(uint8_t *)"\x07\x18\x1c\x0e\x18\x30\x40\x80",
-	(uint8_t *)"\x06\x10\x38\x7c\x10\x10\x10",
-	(uint8_t *)"\x06\x10\x10\x10\x7c\x38\x10",
-	(uint8_t *)"\x05\x7e\xff\x52\xff\x2c",
+const uint8_t *font_data[256] = {
+	/* 0x00 _ */ (uint8_t *)"\x01\x00",
+	/* 0x01 _ */ (uint8_t *)"\x01\x00",
+	/* 0x02 _ */ (uint8_t *)"\x01\x00",
+	/* 0x03 _ */ (uint8_t *)"\x01\x00",
+	/* 0x04 _ */ (uint8_t *)"\x01\x00",
+	/* 0x05 _ */ (uint8_t *)"\x01\x00",
+	/* 0x06 _ */ (uint8_t *)"\x01\x00",
+	/* 0x07 _ */ (uint8_t *)"\x01\x00",
+	/* 0x08 _ */ (uint8_t *)"\x01\x00",
+	/* 0x09 _ */ (uint8_t *)"\x01\x00",
+	/* 0x0a _ */ (uint8_t *)"\x01\x00",
+	/* 0x0b _ */ (uint8_t *)"\x01\x00",
+	/* 0x0c _ */ (uint8_t *)"\x01\x00",
+	/* 0x0d _ */ (uint8_t *)"\x01\x00",
+	/* 0x0e _ */ (uint8_t *)"\x01\x00",
+	/* 0x0f _ */ (uint8_t *)"\x01\x00",
+	/* 0x10 _ */ (uint8_t *)"\x01\x00",
+	/* 0x11 _ */ (uint8_t *)"\x01\x00",
+	/* 0x12 _ */ (uint8_t *)"\x01\x00",
+	/* 0x13 _ */ (uint8_t *)"\x01\x00",
+	/* 0x14 _ */ (uint8_t *)"\x01\x00",
+	/* 0x15 _ */ (uint8_t *)"\x01\x00",
+	/* 0x16 _ */ (uint8_t *)"\x01\x00",
+	/* 0x17 _ */ (uint8_t *)"\x01\x00",
+	/* 0x18 _ */ (uint8_t *)"\x01\x00",
+	/* 0x19 _ */ (uint8_t *)"\x01\x00",
+	/* 0x1a _ */ (uint8_t *)"\x01\x00",
+	/* 0x1b _ */ (uint8_t *)"\x01\x00",
+	/* 0x1c _ */ (uint8_t *)"\x01\x00",
+	/* 0x1d _ */ (uint8_t *)"\x01\x00",
+	/* 0x1e _ */ (uint8_t *)"\x01\x00",
+	/* 0x1f _ */ (uint8_t *)"\x01\x00",
+	/* 0x20   */ (uint8_t *)"\x01\x00",
+	/* 0x21 ! */ (uint8_t *)"\x02\xfa\xfa",
+	/* 0x22 " */ (uint8_t *)"\x03\xc0\x00\xc0",
+	/* 0x23 # */ (uint8_t *)"\x05\x6c\xfe\x6c\xfe\x6c",
+	/* 0x24 $ */ (uint8_t *)"\x05\x32\xff\x5a\xff\x4c",
+	/* 0x25 % */ (uint8_t *)"\x06\xc0\xc6\x1c\x70\xc6\x06",
+	/* 0x26 & */ (uint8_t *)"\x06\x5c\xfe\xb2\xfe\x4c\x1e",
+	/* 0x27 ' */ (uint8_t *)"\x01\xc0",
+	/* 0x28 ( */ (uint8_t *)"\x03\x38\x7c\x82",
+	/* 0x29 ) */ (uint8_t *)"\x03\x82\x7c\x38",
+	/* 0x2a * */ (uint8_t *)"\x05\x6c\x38\xfe\x38\x6c",
+	/* 0x2b + */ (uint8_t *)"\x05\x10\x10\x7c\x10\x10",
+	/* 0x2c , */ (uint8_t *)"\x02\x03\x06",
+	/* 0x2d - */ (uint8_t *)"\x04\x10\x10\x10\x10",
+	/* 0x2e . */ (uint8_t *)"\x02\x06\x06",
+	/* 0x2f / */ (uint8_t *)"\x03\x0e\x38\xe0",
+	/* 0x30 0 */ (uint8_t *)"\x05\x7c\xfe\x82\xfe\x7c",
+	/* 0x31 1 */ (uint8_t *)"\x03\x40\xfe\xfe",
+	/* 0x32 2 */ (uint8_t *)"\x05\x8e\x9e\x92\xf2\x62",
+	/* 0x33 3 */ (uint8_t *)"\x05\x82\x92\x92\xfe\x6c",
+	/* 0x34 4 */ (uint8_t *)"\x05\x18\x28\x48\xfe\xfe",
+	/* 0x35 5 */ (uint8_t *)"\x05\xe2\xa2\xa2\xbe\x1c",
+	/* 0x36 6 */ (uint8_t *)"\x05\x7c\xfe\xa2\xbe\x1c",
+	/* 0x37 7 */ (uint8_t *)"\x05\x80\x8e\xbe\xf0\xc0",
+	/* 0x38 8 */ (uint8_t *)"\x05\x6c\xfe\x92\xfe\x6c",
+	/* 0x39 9 */ (uint8_t *)"\x05\x70\xfa\x8a\xfe\x7c",
+	/* 0x3a : */ (uint8_t *)"\x02\x36\x36",
+	/* 0x3b ; */ (uint8_t *)"\x02\x33\x36",
+	/* 0x3c < */ (uint8_t *)"\x04\x10\x38\x6c\xc6",
+	/* 0x3d = */ (uint8_t *)"\x04\x28\x28\x28\x28",
+	/* 0x3e > */ (uint8_t *)"\x04\xc6\x6c\x38\x10",
+	/* 0x3f ? */ (uint8_t *)"\x05\x80\x9a\xba\xe0\x40",
+	/* 0x40 @ */ (uint8_t *)"\x06\x7c\xfe\xaa\xba\xfa\x78",
+	/* 0x41 A */ (uint8_t *)"\x05\x7e\xfe\x88\xfe\x7e",
+	/* 0x42 B */ (uint8_t *)"\x05\xfe\xfe\xa2\xfe\x5c",
+	/* 0x43 C */ (uint8_t *)"\x05\x7c\xfe\x82\x82\x82",
+	/* 0x44 D */ (uint8_t *)"\x05\xfe\xfe\x82\xfe\x7c",
+	/* 0x45 E */ (uint8_t *)"\x05\xfe\xfe\xa2\xa2\x82",
+	/* 0x46 F */ (uint8_t *)"\x05\xfe\xfe\xa0\xa0\x80",
+	/* 0x47 G */ (uint8_t *)"\x05\x7c\xfe\x82\x9e\x1e",
+	/* 0x48 H */ (uint8_t *)"\x05\xfe\xfe\x20\xfe\xfe",
+	/* 0x49 I */ (uint8_t *)"\x02\xfe\xfe",
+	/* 0x4a J */ (uint8_t *)"\x04\x02\x02\xfe\xfc",
+	/* 0x4b K */ (uint8_t *)"\x06\xfe\xfe\x38\x6c\xc6\x82",
+	/* 0x4c L */ (uint8_t *)"\x04\xfe\xfe\x02\x02",
+	/* 0x4d M */ (uint8_t *)"\x07\xfe\x7e\x30\x18\x30\x7e\xfe",
+	/* 0x4e N */ (uint8_t *)"\x06\xfe\x7e\x30\x18\xfc\xfe",
+	/* 0x4f O */ (uint8_t *)"\x06\x7c\xfe\x82\x82\xfe\x7c",
+	/* 0x50 P */ (uint8_t *)"\x05\xfe\xfe\x88\xf8\x70",
+	/* 0x51 Q */ (uint8_t *)"\x06\x7c\xfe\x82\x86\xff\x7d",
+	/* 0x52 R */ (uint8_t *)"\x05\xfe\xfe\x88\xfe\x72",
+	/* 0x53 S */ (uint8_t *)"\x04\x62\xf2\x9e\x8c",
+	/* 0x54 T */ (uint8_t *)"\x06\x80\x80\xfe\xfe\x80\x80",
+	/* 0x55 U */ (uint8_t *)"\x05\xfc\xfe\x02\xfe\xfc",
+	/* 0x56 V */ (uint8_t *)"\x06\xe0\xf8\x1e\x1e\xf8\xe0",
+	/* 0x57 W */ (uint8_t *)"\x07\xf0\xfe\x1e\x3c\x1e\xfe\xf0",
+	/* 0x58 X */ (uint8_t *)"\x06\xc6\xee\x38\x38\xee\xc6",
+	/* 0x59 Y */ (uint8_t *)"\x06\xc0\xe0\x3e\x3e\xe0\xc0",
+	/* 0x5a Z */ (uint8_t *)"\x05\x8e\x9e\xba\xf2\xe2",
+	/* 0x5b [ */ (uint8_t *)"\x03\xfe\xfe\x82",
+	/* 0x5c \ */ (uint8_t *)"\x03\xe0\x38\x0e",
+	/* 0x5d ] */ (uint8_t *)"\x03\x82\xfe\xfe",
+	/* 0x5e ^ */ (uint8_t *)"\x03\x60\xc0\x60",
+	/* 0x5f _ */ (uint8_t *)"\x06\x02\x02\x02\x02\x02\x02",
+	/* 0x60 ` */ (uint8_t *)"\x02\x80\x40",
+	/* 0x61 a */ (uint8_t *)"\x05\x04\x2e\x2a\x3e\x1e",
+	/* 0x62 b */ (uint8_t *)"\x05\xfe\xfe\x22\x3e\x1c",
+	/* 0x63 c */ (uint8_t *)"\x04\x1c\x3e\x22\x22",
+	/* 0x64 d */ (uint8_t *)"\x05\x1c\x3e\x22\xfe\xfe",
+	/* 0x65 e */ (uint8_t *)"\x05\x1c\x3e\x2a\x3a\x1a",
+	/* 0x66 f */ (uint8_t *)"\x03\x7e\xfe\xa0",
+	/* 0x67 g */ (uint8_t *)"\x05\x18\x3d\x25\x3f\x3e",
+	/* 0x68 h */ (uint8_t *)"\x05\xfe\xfe\x20\x3e\x1e",
+	/* 0x69 i */ (uint8_t *)"\x02\xbe\xbe",
+	/* 0x6a j */ (uint8_t *)"\x03\x01\xbf\xbe",
+	/* 0x6b k */ (uint8_t *)"\x05\xfe\xfe\x1c\x36\x22",
+	/* 0x6c l */ (uint8_t *)"\x02\xfe\xfe",
+	/* 0x6d m */ (uint8_t *)"\x08\x3e\x3e\x20\x3e\x3e\x20\x3e\x1e",
+	/* 0x6e n */ (uint8_t *)"\x05\x3e\x3e\x20\x3e\x1e",
+	/* 0x6f o */ (uint8_t *)"\x05\x1c\x3e\x22\x3e\x1c",
+	/* 0x70 p */ (uint8_t *)"\x05\x3f\x3f\x24\x3c\x18",
+	/* 0x71 q */ (uint8_t *)"\x05\x18\x3c\x24\x3f\x3f",
+	/* 0x72 r */ (uint8_t *)"\x04\x3e\x3e\x10\x30",
+	/* 0x73 s */ (uint8_t *)"\x04\x1a\x3a\x2e\x2c",
+	/* 0x74 t */ (uint8_t *)"\x03\xfc\xfe\x22",
+	/* 0x75 u */ (uint8_t *)"\x05\x3c\x3e\x02\x3e\x3e",
+	/* 0x76 v */ (uint8_t *)"\x05\x30\x3c\x0e\x3c\x30",
+	/* 0x77 w */ (uint8_t *)"\x07\x38\x3e\x06\x1c\x06\x3e\x38",
+	/* 0x78 x */ (uint8_t *)"\x05\x36\x3e\x08\x3e\x36",
+	/* 0x79 y */ (uint8_t *)"\x05\x38\x3d\x05\x3f\x3e",
+	/* 0x7a z */ (uint8_t *)"\x05\x26\x2e\x3a\x32\x22",
+	/* 0x7b { */ (uint8_t *)"\x04\x10\x7c\xee\x82",
+	/* 0x7c | */ (uint8_t *)"\x02\xff\xff",
+	/* 0x7d } */ (uint8_t *)"\x04\x82\xee\x7c\x10",
+	/* 0x7e ~ */ (uint8_t *)"\x04\x08\x10\x08\x10",
+	/* 0x7f _ */ (uint8_t *)"\x01\x00",
+	/* 0x80 _ */ (uint8_t *)"\x01\x00",
+	/* 0x81 _ */ (uint8_t *)"\x01\x00",
+	/* 0x82 _ */ (uint8_t *)"\x01\x00",
+	/* 0x83 _ */ (uint8_t *)"\x01\x00",
+	/* 0x84 _ */ (uint8_t *)"\x01\x00",
+	/* 0x85 _ */ (uint8_t *)"\x01\x00",
+	/* 0x86 _ */ (uint8_t *)"\x01\x00",
+	/* 0x87 _ */ (uint8_t *)"\x01\x00",
+	/* 0x88 _ */ (uint8_t *)"\x01\x00",
+	/* 0x89 _ */ (uint8_t *)"\x01\x00",
+	/* 0x8a _ */ (uint8_t *)"\x01\x00",
+	/* 0x8b _ */ (uint8_t *)"\x01\x00",
+	/* 0x8c _ */ (uint8_t *)"\x01\x00",
+	/* 0x8d _ */ (uint8_t *)"\x01\x00",
+	/* 0x8e _ */ (uint8_t *)"\x01\x00",
+	/* 0x8f _ */ (uint8_t *)"\x01\x00",
+	/* 0x90 _ */ (uint8_t *)"\x01\x00",
+	/* 0x91 _ */ (uint8_t *)"\x01\x00",
+	/* 0x92 _ */ (uint8_t *)"\x01\x00",
+	/* 0x93 _ */ (uint8_t *)"\x01\x00",
+	/* 0x94 _ */ (uint8_t *)"\x01\x00",
+	/* 0x95 _ */ (uint8_t *)"\x01\x00",
+	/* 0x96 _ */ (uint8_t *)"\x01\x00",
+	/* 0x97 _ */ (uint8_t *)"\x01\x00",
+	/* 0x98 _ */ (uint8_t *)"\x01\x00",
+	/* 0x99 _ */ (uint8_t *)"\x01\x00",
+	/* 0x9a _ */ (uint8_t *)"\x01\x00",
+	/* 0x9b _ */ (uint8_t *)"\x01\x00",
+	/* 0x9c _ */ (uint8_t *)"\x01\x00",
+	/* 0x9d _ */ (uint8_t *)"\x01\x00",
+	/* 0x9e _ */ (uint8_t *)"\x01\x00",
+	/* 0x9f _ */ (uint8_t *)"\x01\x00",
+	/* 0xa0 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa1 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa2 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa3 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa4 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa5 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa6 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa7 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa8 _ */ (uint8_t *)"\x01\x00",
+	/* 0xa9 _ */ (uint8_t *)"\x01\x00",
+	/* 0xaa _ */ (uint8_t *)"\x01\x00",
+	/* 0xab _ */ (uint8_t *)"\x01\x00",
+	/* 0xac _ */ (uint8_t *)"\x01\x00",
+	/* 0xad _ */ (uint8_t *)"\x01\x00",
+	/* 0xae _ */ (uint8_t *)"\x01\x00",
+	/* 0xaf _ */ (uint8_t *)"\x01\x00",
+	/* 0xb0 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb1 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb2 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb3 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb4 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb5 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb6 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb7 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb8 _ */ (uint8_t *)"\x01\x00",
+	/* 0xb9 _ */ (uint8_t *)"\x01\x00",
+	/* 0xba _ */ (uint8_t *)"\x01\x00",
+	/* 0xbb _ */ (uint8_t *)"\x01\x00",
+	/* 0xbc _ */ (uint8_t *)"\x01\x00",
+	/* 0xbd _ */ (uint8_t *)"\x01\x00",
+	/* 0xbe _ */ (uint8_t *)"\x01\x00",
+	/* 0xbf _ */ (uint8_t *)"\x01\x00",
+	/* 0xc0 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc1 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc2 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc3 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc4 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc5 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc6 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc7 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc8 _ */ (uint8_t *)"\x01\x00",
+	/* 0xc9 _ */ (uint8_t *)"\x01\x00",
+	/* 0xca _ */ (uint8_t *)"\x01\x00",
+	/* 0xcb _ */ (uint8_t *)"\x01\x00",
+	/* 0xcc _ */ (uint8_t *)"\x01\x00",
+	/* 0xcd _ */ (uint8_t *)"\x01\x00",
+	/* 0xce _ */ (uint8_t *)"\x01\x00",
+	/* 0xcf _ */ (uint8_t *)"\x01\x00",
+	/* 0xd0 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd1 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd2 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd3 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd4 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd5 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd6 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd7 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd8 _ */ (uint8_t *)"\x01\x00",
+	/* 0xd9 _ */ (uint8_t *)"\x01\x00",
+	/* 0xda _ */ (uint8_t *)"\x01\x00",
+	/* 0xdb _ */ (uint8_t *)"\x01\x00",
+	/* 0xdc _ */ (uint8_t *)"\x01\x00",
+	/* 0xdd _ */ (uint8_t *)"\x01\x00",
+	/* 0xde _ */ (uint8_t *)"\x01\x00",
+	/* 0xdf _ */ (uint8_t *)"\x01\x00",
+	/* 0xe0 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe1 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe2 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe3 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe4 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe5 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe6 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe7 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe8 _ */ (uint8_t *)"\x01\x00",
+	/* 0xe9 _ */ (uint8_t *)"\x01\x00",
+	/* 0xea _ */ (uint8_t *)"\x01\x00",
+	/* 0xeb _ */ (uint8_t *)"\x01\x00",
+	/* 0xec _ */ (uint8_t *)"\x01\x00",
+	/* 0xed _ */ (uint8_t *)"\x01\x00",
+	/* 0xee _ */ (uint8_t *)"\x01\x00",
+	/* 0xef _ */ (uint8_t *)"\x01\x00",
+	/* 0xf0 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf1 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf2 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf3 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf4 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf5 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf6 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf7 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf8 _ */ (uint8_t *)"\x01\x00",
+	/* 0xf9 _ */ (uint8_t *)"\x01\x00",
+	/* 0xfa _ */ (uint8_t *)"\x01\x00",
+	/* 0xfb _ */ (uint8_t *)"\x01\x00",
+	/* 0xfc _ */ (uint8_t *)"\x01\x00",
+	/* 0xfd _ */ (uint8_t *)"\x01\x00",
+	/* 0xfe _ */ (uint8_t *)"\x07\x44\xee\x7c\x38\x7c\xee\x44",
+	/* 0xff _ */ (uint8_t *)"\x07\x18\x1c\x0e\x18\x30\x40\x80",
 };
 
 int fontCharWidth(char c) {
-	if ((c < FONT_START) || (c > FONT_END)) {
-		c = '?';
-	}
-	return font_data[(int)(c - FONT_START)][0];
+	return font_data[(int)(c)][0];
 }
 
-int fontStringWidth(const char *s) {
-	if (!s) return 0;
-	int l = 0;
-	char *c;
-	for (c = (char *)s; *c; c++) {
-		l += fontCharWidth(*c) + 1;
-	}
-	return l;
+const uint8_t *fontCharData(char c) {
+	return font_data[(int)(c)] + 1;
 }
diff --git a/gen/fonts.h b/gen/fonts.h
index b4465ea..ecb5195 100644
--- a/gen/fonts.h
+++ b/gen/fonts.h
@@ -3,13 +3,11 @@
 
 #include <stdint.h>
 
-#define FONT_START 32
-#define FONT_END 132
 #define FONT_HEIGHT 8
 
-int fontCharWidth(char c);
-int fontStringWidth(const char *s);
+extern const uint8_t *font_data[256];
 
-extern const uint8_t *font_data[FONT_END - FONT_START + 1];
+int fontCharWidth(char c);
+const uint8_t *fontCharData(char c);
 
 #endif
diff --git a/gen/fonts/font.png b/gen/fonts/font.png
index 6aa04f5d2be9d38ad2eda1be1b65035ea510879b..9537b46f12633f8ce0ff830b8a014b8aa4573762 100644
GIT binary patch
literal 1196
zcmV;d1XKHoP)<h;3K|Lk000e1NJLTq00UA0000OG0ssI2e7RX%000DYNkl<Zc-rk-
z(X#6x2!zi0|6le#q&0?x6-{!_G)EsYtwDtq5YcEUMO387S3gx$M2Zv@Ev2Yxks?J@
zKYu@BnwodRQbfd%iAa65QEq*{DL-RvZ}<9R&0cDac?I<?^E(d>SKH9FgH{kj{~jT3
zg`>1ITPwne9m|ukiqnd`Lnjh3Ux!F?>o@FSg*1`WRaFe0tyUcBKT3s_76I{;s%h(@
zkp!(X=^(q|c0i~R1YDgoHO9o+`fA9Ip|$XOW@va0?eT~|+A?{IL$s<Ap=ZeaLLAGP
z8u+{OHrM|ZyrH2PBXUGo&-MJ1&pq}K<{P(F<|WT9o7ZTcSZ^v1?!H-{EO4c?i=x{c
ze@`&q@?ci<t+bS;#$})-Gi_Z0!byZrgerN3%p1n|xKYDa3bz%~xTv1gz^I43&bVlB
z+4E#L`~TBOaTX5St)Rv=VM9D^dgo_067#n}{$B5GfXeusRaW_%#u5cQ7`psCO#Zr(
zi85DG!(ogJDuMAk@7#$S1xm>*Mfv%=Y9*_wP3%7k>}-t=uw7(N4w+6&2CgE^2TjU5
z%57ijsR^2h3~+*seSVSOF{V^4s7{Srnb{t=P;||q_Mg%DHvLH=Z|nr=Yo-o&DF?fd
zg66~3EQ;olJx+5l)p|ApAnX}vh173c<2!^zTLf^GRaQxcJtq9X)v$G>uV-Uno;;h9
z{7c3%p0~~fc32DViZ8V2YRyW6d*yB_h%YwzSOkM+lh-kWlFfY*{Lz>glP+!=#!S;t
zG?pQb*uF2NF%6fib<u{$Of;!<BPtFc8g*u(hq9zR;hiy!B+kULB4d$U_C2C;)yz$A
zPwYJ=^fqz}1QWyd%KxphB0qPh=Nic0I^-q6-?Z1p-pC<Z6a!6XlJJbu_{0f^=x^M?
z9pizi`GK6Y{7k3TzR1OQS&hP%>F_!qg<pas;oQCdKp-L_oX?<NqBC~~;=i?87_XS$
z<z{p*NtxGA+}VCzYJ8PdZe45Kyj5!>4+;B*uFFKhR>tL#buN>Eh#XmF@tecsCWlB?
z3-`RqM7pSm(FL#Qmfp8)za}(lNX#fhc}HO3=IS!rl4%gmb3U4-o-nBMG4xFVWh;A^
z$&<c<XCL{dae9u1lD?~~^7xp~P1c}|ydEQVwA7*3b7PMD4z)c;=O<axJ6t}wOK$UL
z?e7dd!ouSZexMx5m|xD_vs7{v-d)~ILpR+^Iv>sTCU2k*Wu7qkk)J7vPxQL|$oR?r
z`QXf*uS{&DP%`rv>5S0RQgSh48iDgsV{$9Sne2K77udN(HMvbeE-79c#ILf-V+w{k
ze2f0`B(d>EKSF?)=q*6%g>DMn>Ws^CKRc-7c5k*tlrA&<R(zC^8VjA~M4qh~kSH@v
zgZ<di>BRXo8UpClYZf1j%eSv*u2O^4q{Ij?&2f>@z}&RQr;h1^i0#}o>2`u2uSBZS
zetwkEC^CJKzZ%_CbiIuW2<d^{=2Qlk-@jhAyI5tFXGeZX)BXqX$2vqG{AWD?0000<
KMNUMnLSTa90#Qr=

literal 1114
zcmV-g1f~0lP)<h;3K|Lk000e1NJLTq00Juj000OG0ssI2w`(ZQ000CbNkl<ZXx`OZ
z+jiq13=}#0|G&&WIKfyN4FlLs%R^6$1xSN#$h6d2tyr;QX4Pu3Qfn=xRI664l+R<W
zRxI|s2i9t4j?B#3tAp~G^G*3#>v((iUwh8hdfcnf-!p&m&~bGv-6rS-arEyM@=<Y>
zp5_=uIPq&C8Jjr0$R~84N5YuMEgm?+D$-<9H&t<X_F8f2|0q@L^avPIs%|VqLj-NG
z=|OhK?SxP>2tb{5J<i1X{$|L)(0X{089JU*d%WTwZJE4{OZ2Leq36hOBaUUKCp@0K
zt<8T2Z_&`45fMjvx?*Fh0=yHE2t|;W<?Rrl{~P;V=SA~6Q}ImK+S?}_9)C}@$b)k(
zN9!qF4`iSxb7LU^;UvQ+LzTRW%sa;Ty4k>93OFj#KvZqD^$c?axXwT{xa>Mv+<p7O
z7I)#2`6WHjgdOp+>Fw`qCg!(5{)-JFtoR)0`Qea0N|9-K?Dz-O^d0eXsagb!PO1?&
z2;Lbb3`kZLtI%=3%cxqoj`L?R#`lyNb+I#Lc9XbsNkf<~D#|;{?O5ui4O(zgaf6_3
z{0V>IOsQE=+Zx!ZWGWDfp*ghq6`k)7g(L}xlSKNKQOAVoVi#7U`EWJM5{t+lr@5GF
zs~80k&U1MQ2jaX3I|N~D1aK#<ao#vO2QmC`^{!T50~Ngf<vFJKNY-*n&`^jIw#KL8
zpu}BwN*^<bVS>!{UU!Qze!FbfElN@z5&YTk98*!4oVsnA3JeOdl6l>J>{x>fYF(Cl
zxs4{B(7AH}qfsjxJ#}{EWdOxArV{on%JR6fP#eh93?BLy(x3&s&D;XP#IYS0g;MlB
zIRnA@ZBperrk$(8kvO!hK!m?o<;dLea(*3)ND<J@^Dju{l8To50k@Wi97UTSt*$&#
zNf48yh0v>K2H-${2a<$yXu1R<BEo)M;TD~FIw$x_izRnG;Z}4{q}25@CfV?mOv>7k
z8TbtXX3UYj*FtGE^ZN?=#N?E`EW=c>!@DZ%Pb)4g2)LjNl>lO!ebM>-P4x0S&0jdl
z4O7B>N2v$AO%V1upFO)T7}S0^e<-%~vJaWu^cDO}#`D+ZJ<42ebf+-F>1syazDV$h
zRk-XtM80=HUfVpp)G)06ZRQTynNgvSuy9w%D}MUPlH>uffS{xWP$D-F9)ii_vnOEj
z!|7B$9#cYnr-)?^=UFJd?#BtZUt+n^HDw<&o#EvyQaN8nU_XF~SsiC`=ouieYsYs|
z?j|3!bcKwbUrC<yT<`)5z71^YCBJw-J8VVXna!_VF~m1SXPBQ_?h8Fb8I?!A1;0}2
zfjA<KF1WxUze#)p)IT7_?C;^$*!;a@jY<5^35kIyWSh6K$&GWY7zBg|Zey!(IdMdu
gr_^#@U0nqE57v_;E$1g+9{>OV07*qoM6N<$f}wyKYXATM

diff --git a/gen/fonts/generate.py b/gen/fonts/generate.py
index b7a1dd7..c50765d 100755
--- a/gen/fonts/generate.py
+++ b/gen/fonts/generate.py
@@ -20,12 +20,15 @@ class Img(object):
 
 img = Img('font.png')
 cur = ''
+idx = 0
 
 for i in range(img.w):
     if img.pixel(i, 0) == None:
         cur = '\\x%02x' % (len(cur) / 4) + cur
-        print '\t(uint8_t *)"%s",' % cur
+        ch = chr(idx) if idx >= 32 and idx <= 126 else '_'
+        print '\t/* 0x%02x %c */ (uint8_t *)"%s",' % (idx, ch , cur)
         cur = ''
+        idx += 1
         continue
     val = img.pixel(i, 0) + img.pixel(i, 1) + img.pixel(i, 2) + img.pixel(i, 3) + img.pixel(i, 4) + img.pixel(i, 5) + img.pixel(i, 6) + img.pixel(i, 7)
     cur += '\\x%02x' % int(val, 2)
diff --git a/layout.c b/layout.c
index bef3a6c..2d7f277 100644
--- a/layout.c
+++ b/layout.c
@@ -67,14 +67,14 @@ void layoutDialog(LayoutDialogIcon icon, const char *btnNo, const char *btnYes,
 		}
 	}
 	if (btnNo) {
-		oledDrawString(1, OLED_HEIGHT - 8, "\x80");
-		oledDrawString(fontCharWidth('\x80') + 3, OLED_HEIGHT - 8, btnNo);
-		oledInvert(0, OLED_HEIGHT - 9, fontCharWidth('\x80') + fontStringWidth(btnNo) + 2, OLED_HEIGHT - 1);
+		oledDrawString(1, OLED_HEIGHT - 8, "\xfe");
+		oledDrawString(fontCharWidth('\xfe') + 3, OLED_HEIGHT - 8, btnNo);
+		oledInvert(0, OLED_HEIGHT - 9, fontCharWidth('\xfe') + oledStringWidth(btnNo) + 2, OLED_HEIGHT - 1);
 	}
 	if (btnYes) {
-		oledDrawString(OLED_WIDTH - fontCharWidth('\x81') - 1, OLED_HEIGHT - 8, "\x81");
-		oledDrawString(OLED_WIDTH - fontStringWidth(btnYes) - fontCharWidth('\x81') - 3, OLED_HEIGHT - 8, btnYes);
-		oledInvert(OLED_WIDTH - fontStringWidth(btnYes) - fontCharWidth('\x81') - 4, OLED_HEIGHT - 9, OLED_WIDTH - 1, OLED_HEIGHT - 1);
+		oledDrawString(OLED_WIDTH - fontCharWidth('\xff') - 1, OLED_HEIGHT - 8, "\xff");
+		oledDrawString(OLED_WIDTH - oledStringWidth(btnYes) - fontCharWidth('\xff') - 3, OLED_HEIGHT - 8, btnYes);
+		oledInvert(OLED_WIDTH - oledStringWidth(btnYes) - fontCharWidth('\xff') - 4, OLED_HEIGHT - 9, OLED_WIDTH - 1, OLED_HEIGHT - 1);
 	}
 	oledRefresh();
 }
diff --git a/oled.c b/oled.c
index 2d90105..00405c0 100644
--- a/oled.c
+++ b/oled.c
@@ -189,51 +189,52 @@ void oledClearPixel(int x, int y)
 
 void oledDrawChar(int x, int y, char c)
 {
-	uint8_t width, *column;
+	int char_width;
+	const uint8_t *char_data;
 
 	if ((x >= OLED_WIDTH) || (y >= OLED_HEIGHT)) return;
 
-	if (c < FONT_START) {
-		c = ' ';
-	}
-
-	if (c > FONT_END) {
-		c = '_';
-	}
-
-	width = font_data[(int)(c - FONT_START)][0];
-	column = (uint8_t *)(font_data[(int)(c - FONT_START)] + 1);
+	char_width = fontCharWidth(c);
+	char_data = fontCharData(c);
 
 	int xoffset, yoffset;
-	for (xoffset = 0; xoffset < width; xoffset++) {
+	for (xoffset = 0; xoffset < char_width; xoffset++) {
 		for (yoffset = 0; yoffset < FONT_HEIGHT; yoffset++) {
-			if (column[xoffset] & (1 << (FONT_HEIGHT - 1 - yoffset))) {
+			if (char_data[xoffset] & (1 << (FONT_HEIGHT - 1 - yoffset))) {
 				oledDrawPixel(x + xoffset, y + yoffset);
 			}
 		}
 	}
 }
 
+int oledStringWidth(const char *text) {
+	if (!text) return 0;
+	int l = 0;
+	for (; *text; text++) {
+		l += fontCharWidth(*text) + 1;
+	}
+	return l;
+}
+
 void oledDrawString(int x, int y, const char* text)
 {
 	if (!text) return;
-	const char *c;
 	int l = 0;
-	for (c = text; *c; c++) {
-		oledDrawChar(x + l, y, *c);
-		l += fontCharWidth(*c) + 1;
+	for (; *text; text++) {
+		oledDrawChar(x + l, y, *text);
+		l += fontCharWidth(*text) + 1;
 	}
 }
 
 void oledDrawStringCenter(int y, const char* text)
 {
-	int x = ( OLED_WIDTH - fontStringWidth(text) ) / 2;
+	int x = ( OLED_WIDTH - oledStringWidth(text) ) / 2;
 	oledDrawString(x, y, text);
 }
 
 void oledDrawStringRight(int x, int y, const char* text)
 {
-	x -= fontStringWidth(text);
+	x -= oledStringWidth(text);
 	oledDrawString(x, y, text);
 }
 
diff --git a/oled.h b/oled.h
index 0823b7a..c3b8db2 100644
--- a/oled.h
+++ b/oled.h
@@ -39,6 +39,7 @@ const uint8_t *oledGetBuffer(void);
 void oledDrawPixel(int x, int y);
 void oledClearPixel(int x, int y);
 void oledDrawChar(int x, int y, char c);
+int oledStringWidth(const char *text);
 void oledDrawString(int x, int y, const char* text);
 void oledDrawStringCenter(int y, const char* text);
 void oledDrawStringRight(int x, int y, const char* text);