From 9f85bdd757a3fc0b8d8b1be048a580fbfd175907 Mon Sep 17 00:00:00 2001
From: chlorospingus <paul@sayson.com>
Date: Thu, 12 Jun 2025 18:49:49 -0700
Subject: [PATCH] Upload to github

---
 tradjust.cpp | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 tradjust.cpp

diff --git a/tradjust.cpp b/tradjust.cpp
new file mode 100644
index 0000000..45caa78
--- /dev/null
+++ b/tradjust.cpp
@@ -0,0 +1,102 @@
+#include <bits/types/struct_timeval.h>
+#include <cstdlib>
+#include <ctime>
+#include <fstream>
+#include <iostream>
+using namespace std;
+
+struct input_event {
+	timeval 		time;
+	unsigned short 	type;
+	unsigned short 	code;
+	unsigned int 	value;
+};
+
+enum button_code {
+	BTN_LEFT 			= 272,
+	BTN_TOUCH			= 330,
+	BTN_TOOL_FINGER 	= 325,
+	BTN_TOOL_DOUBLETAP	= 333,
+	BTN_TOOL_TRIPLETAP	= 334,
+	BTN_TOOL_QUADTAP	= 335,
+	BTN_TOOL_QUINTTAP	= 328,
+};
+
+float operator-(timeval a, timeval b) {
+	return 0;
+}
+
+void adjustVolume (float diff) {
+	char cmd[45];
+	if (diff >= 0)
+		sprintf(cmd, "pactl set-sink-volume @DEFAULT_SINK@ +%d%%", abs((int) diff));
+	else
+		sprintf(cmd, "pactl set-sink-volume @DEFAULT_SINK@ -%d%%", abs((int) diff));
+	system(cmd);
+}
+
+void adjustBrightness (float diff) {
+	char cmd[45];
+	if (diff > 0)
+		sprintf(cmd, "brightnessctl set +%d > /dev/null", (int) diff);
+	else
+		sprintf(cmd, "brightnessctl set %d- -n 1 > /dev/null", (int) diff * -1);
+	system(cmd);
+}
+
+void adjust(int y, bool side) {
+	if (y == 0) return;
+	if (side)
+		adjustBrightness (y*8);
+	else
+		adjustVolume	 ((float)y/8);
+}
+
+int main(int argc, char** argv) {
+	ifstream 		device (
+		"/dev/input/by-path/pci-0000:00:15.0-platform-i2c_designware.0-event-mouse",
+		ios_base::binary
+	);
+	input_event 	event;
+	button_code 	button;
+	bool			down;
+	time_t			tv_sec  = 0;
+	long int		tv_usec = 0;
+	int				y_value = 0;
+	int				y_diff;
+	bool			side;		// False is left, true is right
+
+	while (device.read(reinterpret_cast<char*>(&event), sizeof(input_event))) {
+		if (event.type == 1) {
+			if (event.code == button_code::BTN_TOUCH)
+				down = false;
+			button = (button_code) event.code;
+		}
+		if (button == button_code::BTN_TOOL_FINGER) {
+			if (event.type == 0 &&
+				event.code == 0 &&
+				event.time.tv_sec - tv_sec
+				+ (float)(event.time.tv_usec - tv_usec)/1000000 > 0.03
+			) {
+				tv_sec  = event.time.tv_sec;
+				tv_usec = event.time.tv_usec;
+				if (down) {
+					adjust(y_diff, side);
+				}
+				y_diff = 0;
+				down = true;
+			}
+
+			if (event.type == 3) {
+				if (event.code == 0) {
+					side = (event.value > 1682); // Trackpad resolution is 3364x1669
+				}
+				if (event.code == 1) {
+					y_diff += y_value - event.value;
+					y_value = event.value;
+				}
+			}
+		}
+	}
+}
+