Add calibration methods and app (#520)

Tactility/Include/Tactility/app/touchcalibration/TouchCalibration.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <Tactility/app/App.h>
+
+namespace tt::app::touchcalibration {
+
+LaunchId start();
+
+} // namespace tt::app::touchcalibration

Tactility/Include/Tactility/hal/touch/TouchDevice.h

@@ -27,6 +27,8 @@ public:
 
     virtual bool supportsTouchDriver() = 0;
 
+    virtual bool supportsCalibration() const { return false; }
+
     /** Could return nullptr if not supported */
     virtual std::shared_ptr<TouchDriver> getTouchDriver() = 0;
 };

Tactility/Include/Tactility/settings/TouchCalibrationSettings.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <cstdint>
+
+namespace tt::settings::touch {
+
+struct TouchCalibrationSettings {
+    bool enabled = false;
+    int32_t xMin = 0;
+    int32_t xMax = 0;
+    int32_t yMin = 0;
+    int32_t yMax = 0;
+};
+
+TouchCalibrationSettings getDefault();
+
+bool load(TouchCalibrationSettings& settings);
+
+TouchCalibrationSettings loadOrGetDefault();
+
+bool save(const TouchCalibrationSettings& settings);
+
+bool isValid(const TouchCalibrationSettings& settings);
+
+TouchCalibrationSettings getActive();
+
+void setRuntimeCalibrationEnabled(bool enabled);
+
+void invalidateCache();
+
+bool applyCalibration(const TouchCalibrationSettings& settings, uint16_t xMax, uint16_t yMax, uint16_t& x, uint16_t& y);
+
+} // namespace tt::settings::touch