From 3be8d094df5a8280c95d4df51dd20e3b22c9db1c Mon Sep 17 00:00:00 2001
From: dodoradio <dodoradio@outlook.com>
Date: Sun, 9 Jul 2023 23:06:27 +0100
Subject: Add altimeter Asteroid watches don't generally have a pressure
 sensor, as it isn't generally exposed by android's HAL. Hence we use the
 basic 12Pa/m relationship to calculate an approximation for altitude from the
 pressure sensor (barometer) reading. This kind of precision seems appropriate
 given that a) we don't expect this to be used as a flight computer and b) the
 android barometer, while precise, isn't super accurate anyway. In order to
 make the reading a bit more useful, we allow the user to calibrate the
 current altitude. Since we allow separate calibration of this from the
 barometer calibration, we use the uncalibrated barometer reading as the input
 for our calculation.

---
 src/SettingsPage.qml | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

(limited to 'src/SettingsPage.qml')

diff --git a/src/SettingsPage.qml b/src/SettingsPage.qml
index c5c81f1..4d36e7f 100644
--- a/src/SettingsPage.qml
+++ b/src/SettingsPage.qml
@@ -42,6 +42,13 @@ Item {
                 icon: "ios-settings-outline"
                 onClicked: pageStack.push(barometerAdjustDialog,{})
             }
+            LabeledActionButton {
+                width: parent.width
+                height: width*0.2
+                text: qsTr("Adjust altimeter")
+                icon: "ios-settings-outline"
+                onClicked: pageStack.push(altimeterAdjustDialog,{})
+            }
         }
     }
     PressureSensor {
@@ -53,6 +60,11 @@ Item {
         key: "/org/asteroidos/sensors/barometer-offset"
         defaultValue: 0
     }
+    ConfigurationValue {
+        id: altimeterOffset
+        key: "/org/asteroidos/sensors/altimeter-offset"
+        defaultValue: -8443
+    }
     Component {
         id: barometerAdjustDialog
         Item {
@@ -135,4 +147,77 @@ Item {
             }
         }
     }
+    Component {
+        id: altimeterAdjustDialog
+        Item {
+            id: root
+            Row {
+                id: valueSelector
+                anchors {
+                    left: parent.left
+                    leftMargin: DeviceInfo.hasRoundScreen ? Dims.w(5) : 0
+                    right: parent.right
+                    rightMargin: DeviceInfo.hasRoundScreen ? Dims.w(5) : 0
+                    verticalCenter: parent.verticalCenter
+                }
+                height: parent.height*0.6
+
+                CircularSpinner {
+                    id: thousandsSelector
+                    height: parent.height
+                    width: parent.width/3
+                    model: 10
+                    showSeparator: false
+                    delegate: SpinnerDelegate { text: index }
+                }
+                CircularSpinner {
+                    id: hundredsSelector
+                    height: parent.height
+                    width: parent.width/4
+                    model: 10
+                    showSeparator: false
+                    delegate: SpinnerDelegate { text: index }
+                }
+                CircularSpinner {
+                    id: tensSelector
+                    height: parent.height
+                    width: parent.width/4
+                    model: 10
+                    delegate: SpinnerDelegate { text: index }
+                }
+                CircularSpinner {
+                    id: onesSelector
+                    height: parent.height
+                    width: parent.width/4
+                    model: 10
+                    showSeparator: true
+                    delegate: SpinnerDelegate { text: index }
+                }
+            }
+
+            Component.onCompleted: {
+                var currValue = Math.round(altimeterOffset.value + pressureSensor.reading.pressure/12);
+                console.log(currValue)
+                thousandsSelector.currentIndex = Math.floor((currValue/1000))
+                hundredsSelector.currentIndex = Math.floor((currValue/100)%10)
+                tensSelector.currentIndex = Math.floor((currValue/10)%10)
+                onesSelector.currentIndex = Math.floor((currValue)%10)
+            }
+
+            IconButton {
+                iconName: "ios-checkmark-circle-outline"
+                anchors {
+                    bottom: parent.bottom
+                    horizontalCenter: parent.horizontalCenter
+                    bottomMargin: Dims.iconButtonMargin
+                }
+
+                onClicked: {
+                    var newValue = thousandsSelector.currentIndex*1000 + hundredsSelector.currentIndex*100 + tensSelector.currentIndex*10 + onesSelector.currentIndex
+                    altimeterOffset.value = newValue - Math.round(pressureSensor.reading.pressure/12)
+                    pageStack.pop(pageStack.currentLayer)
+                }
+            }
+        }
+    }
 }
-- 
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