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https://github.com/trezor/trezor-firmware.git
synced 2024-11-13 19:18:56 +00:00
legacy: fix SCA when displaying the words
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5edffb3230
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@ -544,8 +544,9 @@ void layoutResetWord(const char *word, int pass, int word_pos, bool last) {
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oledDrawString(left, 0 * 9, action, FONT_STANDARD);
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oledDrawString(left, 2 * 9, word_pos < 10 ? index_str + 1 : index_str,
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FONT_STANDARD);
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oledDrawString(left, 3 * 9, word, FONT_STANDARD | FONT_DOUBLE);
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oledHLine(OLED_HEIGHT - 13);
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oledDrawStringCenter(OLED_WIDTH / 2, 4 * 9 - 3, word,
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FONT_FIXED | FONT_DOUBLE);
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oledSCA(4 * 9 - 3 - 2, 4 * 9 - 3 + 15 + 2, OLED_WIDTH / 2);
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layoutButtonYes(btnYes);
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oledRefresh();
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}
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@ -73,6 +73,13 @@ static bool is_debug_link = 0;
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#define OLED_OFFSET(x, y) (OLED_BUFSIZE - 1 - (x) - ((y) / 8) * OLED_WIDTH)
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#define OLED_MASK(x, y) (1 << (7 - (y) % 8))
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/*
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* Return the state of the pixel at x, y
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*/
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bool oledGetPixel(int x, int y) {
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return _oledbuffer[OLED_OFFSET(x, y)] & OLED_MASK(x, y);
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}
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/*
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* Draws a white pixel at x, y
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*/
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@ -239,11 +246,11 @@ void oledDrawChar(int x, int y, char c, int font) {
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return;
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}
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int zoom = (font & FONT_DOUBLE ? 2 : 1);
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int zoom = (font & FONT_DOUBLE) ? 2 : 1;
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int char_width = fontCharWidth(font & 0x7f, c);
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const uint8_t *char_data = fontCharData(font & 0x7f, c);
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if (x <= -char_width * zoom) {
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if (x <= -char_width) {
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return;
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}
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@ -253,7 +260,7 @@ void oledDrawChar(int x, int y, char c, int font) {
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if (zoom <= 1) {
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oledDrawPixel(x + xo, y + yo);
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} else {
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oledBox(x + xo * zoom, y + yo * zoom, x + (xo + 1) * zoom - 1,
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oledBox(x + xo, y + yo * zoom, x + (xo + 1) - 1,
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y + (yo + 1) * zoom - 1, true);
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}
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}
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@ -273,12 +280,12 @@ char oledConvertChar(const char c) {
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int oledStringWidth(const char *text, int font) {
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if (!text) return 0;
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int size = (font & FONT_DOUBLE ? 2 : 1);
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int space = (font & FONT_DOUBLE) ? 2 : 1;
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int l = 0;
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for (; *text; text++) {
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char c = oledConvertChar(*text);
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if (c) {
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l += size * (fontCharWidth(font & 0x7f, c) + 1);
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l += fontCharWidth(font & 0x7f, c) + space;
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}
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}
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return l;
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@ -287,12 +294,12 @@ int oledStringWidth(const char *text, int font) {
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void oledDrawString(int x, int y, const char *text, int font) {
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if (!text) return;
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int l = 0;
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int size = (font & FONT_DOUBLE ? 2 : 1);
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int space = (font & FONT_DOUBLE) ? 2 : 1;
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for (; *text; text++) {
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char c = oledConvertChar(*text);
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if (c) {
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oledDrawChar(x + l, y, c, font);
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l += size * (fontCharWidth(font & 0x7f, c) + 1);
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l += fontCharWidth(font & 0x7f, c) + space;
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}
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}
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}
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@ -413,3 +420,21 @@ void oledSwipeRight(void) {
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oledRefresh();
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}
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}
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/*
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* Mitigate SCA on lines y1-y2 by setting exactly width pixels black
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*/
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void oledSCA(int y1, int y2, int width) {
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y1 = MAX(y1, 0);
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y2 = MIN(y2, OLED_HEIGHT - 1);
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for (int y = y1; y <= y2; y++) {
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int pix = 0;
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for (int x = 0; x < OLED_WIDTH; x++) {
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pix += oledGetPixel(x, y);
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}
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pix = MAX(width - pix, 0);
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for (int x = 0 + (pix / 2); x < OLED_WIDTH - ((pix + 1) / 2); x++) {
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oledInvertPixel(x, y);
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}
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}
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}
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@ -39,6 +39,7 @@ void oledInvertDebugLink(void);
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void oledSetBuffer(uint8_t *buf);
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const uint8_t *oledGetBuffer(void);
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bool oledGetPixel(int x, int y);
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void oledDrawPixel(int x, int y);
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void oledClearPixel(int x, int y);
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void oledInvertPixel(int x, int y);
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@ -55,5 +56,6 @@ void oledHLine(int y);
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void oledFrame(int x1, int y1, int x2, int y2);
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void oledSwipeLeft(void);
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void oledSwipeRight(void);
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void oledSCA(int y1, int y2, int val);
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#endif
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