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-rw-r--r--watch-library/simulator/watch/watch_led.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/watch-library/simulator/watch/watch_led.c b/watch-library/simulator/watch/watch_led.c
index 068da8bd..249be056 100644
--- a/watch-library/simulator/watch/watch_led.c
+++ b/watch-library/simulator/watch/watch_led.c
@@ -32,7 +32,16 @@ void watch_disable_leds(void) {}
void watch_set_led_color(uint8_t red, uint8_t green) {
EM_ASM({
- document.getElementById('light').style.opacity = $1 / 255;
+ // the watch svg contains an feColorMatrix filter with id ledcolor
+ // and a green svg gradient that mimics the led being on
+ // https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feColorMatrix
+ // this changes the color of the gradient to match the red+green combination
+ let filter = document.getElementById("ledcolor");
+ let color_matrix = filter.children[0].values.baseVal;
+ console.log($0, $1);
+ color_matrix[1].value = $0 / 255; // red value
+ color_matrix[6].value = $1 / 255; // green value
+ document.getElementById('light').style.opacity = Math.min(255, $0 + $1) / 255;
}, red, green);
}