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Code Issues Packages Projects Releases 10 Wiki Activity

Random splash on boot (#2961)

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This commit is contained in:
Pezsma
2026-02-16 17:52:47 +01:00
committed by GitHub
parent 290bf543a1
commit 266db4b158
10 changed files with 164 additions and 41 deletions
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firmware/application/ui_navigation.cpp
+58 -10
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@@ -1054,17 +1054,66 @@ SplashScreenView::SplashScreenView(NavigationView& nav)
};
}
uint32_t SplashScreenView::myrand(uint32_t* state) {
uint32_t x = *state;
x ^= x << 13;
x ^= x >> 17;
x ^= x << 5;
*state = x;
return x;
}
void SplashScreenView::get_random_splash_file(std::filesystem::path& path) {
path = u"";
uint32_t rng_state = LPC_RTC->CTIME0;
if (rng_state == 0) rng_state = 0xABBACAFE;
DIR dir;
FILINFO fno;
int32_t valid_count = 0;
// Open directory
if (f_opendir(&dir, (const TCHAR*)splash_dir.c_str()) == FR_OK) {
while (f_readdir(&dir, &fno) == FR_OK && fno.fname[0] != 0) {
// Skip directories
if (fno.fattrib & AM_DIR) continue;
int len = 0;
while (fno.fname[len]) len++; // Get length
if (len >= 4) {
const TCHAR* ext = &fno.fname[len - 4];
// Check extension case-insensitively
if (ext[0] == '.' &&
(ext[1] == 'B' || ext[1] == 'b') &&
(ext[2] == 'M' || ext[2] == 'm') &&
(ext[3] == 'P' || ext[3] == 'p')) {
valid_count++;
// Reservoir Sampling:
if ((myrand(&rng_state) % valid_count) == 0) {
path = splash_dir / fno.fname;
}
}
}
}
f_closedir(&dir);
}
}
void SplashScreenView::paint(Painter&) {
constexpr const uint8_t zoom = 3;
set_clean();
// if (!bmp_view.load_bmp(splash_dot_bmp)) { //--too slow drawing, bc of the more bmp format support, and up-> down drawing
if (!portapack::display.draw_bmp_from_sdcard_file({0, 0}, splash_dot_bmp))
// ^ try draw bmp file from sdcard at (0,0), and the (0,0) already bypassed the status bar, so actual pos is (0, STATUS_BAR_HEIGHT)
portapack::display.draw_bitmap({screen_width / 2 - ((bitmap_titlebar_image.size.width() * zoom) / 2),
screen_height / 2},
bitmap_titlebar_image.size,
bitmap_titlebar_image.data,
Theme::getInstance()->bg_darkest->foreground,
Theme::getInstance()->bg_darkest->background, zoom);
if (portapack::display.draw_bmp_from_sdcard_file({0, 0}, splash_dot_bmp)) return;
// ^ try draw bmp file from sdcard at (0,0), and the (0,0) already bypassed the status bar, so actual pos is (0, STATUS_BAR_HEIGHT)
std::filesystem::path path{};
get_random_splash_file(path);
if (portapack::display.draw_bmp_from_sdcard_file({0, 0}, path)) return;
portapack::display.draw_bitmap({screen_width / 2 - ((bitmap_titlebar_image.size.width() * 3) / 2),
screen_height / 2},
bitmap_titlebar_image.size,
bitmap_titlebar_image.data,
Theme::getInstance()->bg_darkest->foreground,
Theme::getInstance()->bg_darkest->background, 3);
// ^ draw BMP HEX arr in firmware, note that the BMP HEX arr only cover the image part (instead of fill the screen with background, this position is located it in the center)
}
@@ -1082,7 +1131,6 @@ bool SplashScreenView::on_touch(const TouchEvent event) {
case TouchEvent::Type::Start:
handle_pop();
return false;
default:
break;
}