feat(lockscreen): add customizable lockscreen shown on wake/power-on

plugins/locksreen/LockscreenSettingsPage.cpp

@@ -0,0 +1,22 @@
+#include "LockscreenSettingsPage.h"
+#include "fontIds.h"
+
+void LockscreenSettingsActivity::render(GfxRenderer& renderer, LockscreenMode currentMode) {
+    const int LABEL_X = 10;
+    const int VALUE_X = 160;
+    const int ROW_Y   = 60;
+    renderer.drawText(UI_12_FONT_ID, LABEL_X, ROW_Y, "Lockscreen");
+    renderer.drawText(UI_12_FONT_ID, VALUE_X, ROW_Y, LockscreenPlugin::modeName(currentMode));
+}
+
+LockscreenMode LockscreenSettingsActivity::handleNext(LockscreenMode currentMode) {
+    uint8_t v = static_cast<uint8_t>(currentMode);
+    if (v < 1) v++;
+    return static_cast<LockscreenMode>(v);
+}
+
+LockscreenMode LockscreenSettingsActivity::handlePrev(LockscreenMode currentMode) {
+    uint8_t v = static_cast<uint8_t>(currentMode);
+    if (v > 0) v--;
+    return static_cast<LockscreenMode>(v);
+}