arno/trezor-firmware
1
0
Fork 0
mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-25 07:48:10 +00:00
Code Issues Releases Wiki Activity

legacy: fix SCA when displaying the words

Browse Source 
(cherry picked from commit f16c941ed4)
This commit is contained in:
Andrew Kozlik 2019-07-17 15:26:59 +02:00 committed by Pavol Rusnak
parent 6835748bbf
commit 1c9fa5d3c6
No known key found for this signature in database
GPG Key ID: 91F3B339B9A02A3D
3 changed files with 37 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
legacy/firmware/layout2.c
View File

@ -544,8 +544,9 @@ void layoutResetWord(const char *word, int pass, int word_pos, bool last) {
oledDrawString(left, 0 * 9, action, FONT_STANDARD);
oledDrawString(left, 2 * 9, word_pos < 10 ? index_str + 1 : index_str,
FONT_STANDARD);
oledDrawString(left, 3 * 9, word, FONT_STANDARD | FONT_DOUBLE);
oledHLine(OLED_HEIGHT - 13);
oledDrawStringCenter(OLED_WIDTH / 2, 4 * 9 - 3, word,
FONT_FIXED | FONT_DOUBLE);
oledSCA(4 * 9 - 3 - 2, 4 * 9 - 3 + 15 + 2, OLED_WIDTH / 2);
layoutButtonYes(btnYes);
oledRefresh();
}

39
legacy/oled.c
View File

@ -73,6 +73,13 @@ static bool is_debug_link = 0;
#define OLED_OFFSET(x, y) (OLED_BUFSIZE - 1 - (x) - ((y) / 8) * OLED_WIDTH)
#define OLED_MASK(x, y) (1 << (7 - (y) % 8))
/*
* Return the state of the pixel at x, y
*/
bool oledGetPixel(int x, int y) {
return _oledbuffer[OLED_OFFSET(x, y)] & OLED_MASK(x, y);
}
/*
* Draws a white pixel at x, y
*/
@ -239,11 +246,11 @@ void oledDrawChar(int x, int y, char c, int font) {
return;
}
int zoom = (font & FONT_DOUBLE ? 2 : 1);
int zoom = (font & FONT_DOUBLE) ? 2 : 1;
int char_width = fontCharWidth(font & 0x7f, c);
const uint8_t *char_data = fontCharData(font & 0x7f, c);
if (x <= -char_width * zoom) {
if (x <= -char_width) {
return;
}
@ -253,7 +260,7 @@ void oledDrawChar(int x, int y, char c, int font) {
if (zoom <= 1) {
oledDrawPixel(x + xo, y + yo);
} else {
oledBox(x + xo * zoom, y + yo * zoom, x + (xo + 1) * zoom - 1,
oledBox(x + xo, y + yo * zoom, x + (xo + 1) - 1,
y + (yo + 1) * zoom - 1, true);
}
}
@ -273,12 +280,12 @@ char oledConvertChar(const char c) {
int oledStringWidth(const char *text, int font) {
if (!text) return 0;
int size = (font & FONT_DOUBLE ? 2 : 1);
int space = (font & FONT_DOUBLE) ? 2 : 1;
int l = 0;
for (; *text; text++) {
char c = oledConvertChar(*text);
if (c) {
l += size * (fontCharWidth(font & 0x7f, c) + 1);
l += fontCharWidth(font & 0x7f, c) + space;
}
}
return l;
@ -287,12 +294,12 @@ int oledStringWidth(const char *text, int font) {
void oledDrawString(int x, int y, const char *text, int font) {
if (!text) return;
int l = 0;
int size = (font & FONT_DOUBLE ? 2 : 1);
int space = (font & FONT_DOUBLE) ? 2 : 1;
for (; *text; text++) {
char c = oledConvertChar(*text);
if (c) {
oledDrawChar(x + l, y, c, font);
l += size * (fontCharWidth(font & 0x7f, c) + 1);
l += fontCharWidth(font & 0x7f, c) + space;
}
}
}
@ -413,3 +420,21 @@ void oledSwipeRight(void) {
oledRefresh();
}
}
/*
* Mitigate SCA on lines y1-y2 by setting exactly width pixels black
*/
void oledSCA(int y1, int y2, int width) {
y1 = MAX(y1, 0);
y2 = MIN(y2, OLED_HEIGHT - 1);
for (int y = y1; y <= y2; y++) {
int pix = 0;
for (int x = 0; x < OLED_WIDTH; x++) {
pix += oledGetPixel(x, y);
}
pix = MAX(width - pix, 0);
for (int x = 0 + (pix / 2); x < OLED_WIDTH - ((pix + 1) / 2); x++) {
oledInvertPixel(x, y);
}
}
}

2
legacy/oled.h
View File

@ -39,6 +39,7 @@ void oledInvertDebugLink(void);
void oledSetBuffer(uint8_t *buf);
const uint8_t *oledGetBuffer(void);
bool oledGetPixel(int x, int y);
void oledDrawPixel(int x, int y);
void oledClearPixel(int x, int y);
void oledInvertPixel(int x, int y);
@ -55,5 +56,6 @@ void oledHLine(int y);
void oledFrame(int x1, int y1, int x2, int y2);
void oledSwipeLeft(void);
void oledSwipeRight(void);
void oledSCA(int y1, int y2, int val);
#endif