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Code Issues Releases Wiki Activity

add display.text_width

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This commit is contained in:
Pavol Rusnak 2016-05-02 16:50:36 +02:00
parent 4a918a4ba0
commit d746c79fb8
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GPG Key ID: 91F3B339B9A02A3D
3 changed files with 53 additions and 31 deletions
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80
extmod/modtrezorui/modtrezorui-display.h
View File

@ -76,48 +76,48 @@ static void display_icon(uint8_t x, uint8_t y, uint8_t w, uint8_t h, void *data,
display_update();
}
static const uint8_t *get_glyph(uint8_t font, uint8_t c) {
if (c >= ' ' && c <= '~') {
// do nothing - valid ASCII
} else
// UTF-8 handling: https://en.wikipedia.org/wiki/UTF-8#Description
if (c >= 0xC0) {
// bytes 11xxxxxx are first byte of UTF-8 characters
c = '_';
} else {
// bytes 10xxxxxx are successive UTF-8 characters
return 0;
}
switch (font) {
case 0:
return Font_RobotoMono_Regular_20[c - ' '];
case 1:
return Font_Roboto_Regular_20[c - ' '];
case 2:
return Font_Roboto_Bold_20[c - ' '];
}
return 0;
}
// first two bytes are width and height of the glyph
// third, fourth and fifth bytes are advance, bearingX and bearingY of the horizontal metrics of the glyph
// rest is packed 4-bit glyph data
static void display_text(uint8_t x, uint8_t y, uint8_t *text, int textlen, uint8_t font, uint16_t fgcolor, uint16_t bgcolor) {
int xx = x;
const uint8_t *g;
uint8_t c;
uint32_t px = x;
uint16_t colortable[16];
set_color_table(colortable, fgcolor, bgcolor);
// render glyphs
for (int i = 0; i < textlen; i++) {
if (text[i] >= ' ' && text[i] <= '~') {
c = text[i];
} else
// UTF-8 handling: https://en.wikipedia.org/wiki/UTF-8#Description
if (text[i] >= 0xC0) {
// bytes 11xxxxxx are first byte of UTF-8 characters
c = '_';
} else {
// bytes 10xxxxxx are successive UTF-8 characters
continue;
}
switch (font) {
case 0:
g = Font_RobotoMono_Regular_20[c - ' '];
break;
case 1:
g = Font_Roboto_Regular_20[c - ' '];
break;
case 2:
g = Font_Roboto_Bold_20[c - ' '];
break;
default:
return; // unknown font -> abort
}
const uint8_t *g = get_glyph(font, text[i]);
if (!g) continue;
// g[0], g[1] = width, height
// g[2] = advance
// g[3], g[4] = bearingX, bearingY
if (g[0] && g[1]) {
display_set_window(xx + (int8_t)(g[3]), y - (int8_t)(g[4]), g[0], g[1]);
display_set_window(px + (int8_t)(g[3]), y - (int8_t)(g[4]), g[0], g[1]);
for (int j = 0; j < g[0] * g[1]; j++) {
uint8_t c;
if (j % 2 == 0) {
c = g[5 + j/2] >> 4;
} else {
@ -128,10 +128,21 @@ static void display_text(uint8_t x, uint8_t y, uint8_t *text, int textlen, uint8
}
display_update();
}
xx += g[2];
px += g[2];
}
}
// compute the width of the text (in pixels)
static uint32_t display_text_width(uint8_t *text, int textlen, uint8_t font) {
uint32_t w = 0;
for (int i = 0; i < textlen; i++) {
const uint8_t *g = get_glyph(font, text[i]);
if (!g) continue;
w += g[2];
}
return w;
}
static void display_qrcode(uint8_t x, uint8_t y, char *data, int datalen, int scale) {
uint8_t bitdata[QR_MAX_BITDATA];
int side = qr_encode(QR_LEVEL_M, 0, data, datalen, bitdata);
@ -321,6 +332,16 @@ STATIC mp_obj_t mod_TrezorUi_Display_text(size_t n_args, const mp_obj_t *args) {
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_TrezorUi_Display_text_obj, 7, 7, mod_TrezorUi_Display_text);
// def Display.text_width(self, text: bytes, font: int) -> int
STATIC mp_obj_t mod_TrezorUi_Display_text_width(mp_obj_t self, mp_obj_t text, mp_obj_t font) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(text, &bufinfo, MP_BUFFER_READ);
mp_int_t f = mp_obj_get_int(font);
uint32_t w = display_text_width(bufinfo.buf, bufinfo.len, f);
return MP_OBJ_NEW_SMALL_INT(w);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorUi_Display_text_width_obj, mod_TrezorUi_Display_text_width);
// def Display.qrcode(self, x: int, y: int, data: bytes, scale: int) -> None
STATIC mp_obj_t mod_TrezorUi_Display_qrcode(size_t n_args, const mp_obj_t *args) {
mp_int_t x = mp_obj_get_int(args[1]);
@ -416,6 +437,7 @@ STATIC const mp_rom_map_elem_t mod_TrezorUi_Display_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_image), MP_ROM_PTR(&mod_TrezorUi_Display_image_obj) },
{ MP_ROM_QSTR(MP_QSTR_icon), MP_ROM_PTR(&mod_TrezorUi_Display_icon_obj) },
{ MP_ROM_QSTR(MP_QSTR_text), MP_ROM_PTR(&mod_TrezorUi_Display_text_obj) },
{ MP_ROM_QSTR(MP_QSTR_text_width), MP_ROM_PTR(&mod_TrezorUi_Display_text_width_obj) },
{ MP_ROM_QSTR(MP_QSTR_qrcode), MP_ROM_PTR(&mod_TrezorUi_Display_qrcode_obj) },
{ MP_ROM_QSTR(MP_QSTR_loader), MP_ROM_PTR(&mod_TrezorUi_Display_loader_obj) },
{ MP_ROM_QSTR(MP_QSTR_orientation), MP_ROM_PTR(&mod_TrezorUi_Display_orientation_obj) },

2
src/apps/homescreen/layout_homescreen.py
View File

@ -7,7 +7,7 @@ def layout_homescreen():
# ui.display.bar(0, 0, 240, 240, ui.WHITE)
f = open('apps/homescreen/trezor.toig', 'r')
f = open('apps/homescreen/trezor.toig', 'rb')
def func(foreground):
f.seek(0)

2
src/apps/playground/__init__.py
View File

@ -13,7 +13,7 @@ def layout_tap_to_confirm(address, amount, currency):
ui.display.text(10, 140, address[:18], ui.MONO, ui.BLACK, ui.WHITE)
ui.display.text(10, 160, address[18:], ui.MONO, ui.BLACK, ui.WHITE)
f = open('apps/playground/tap_64.toig', 'r')
f = open('apps/playground/tap_64.toig', 'rb')
_background = ui.WHITE
def func(foreground):