add settings to example 'wear-os-gps'

examples/app-template/readme-build.md

@@ -20,6 +20,10 @@ and adding to resources included in the executable).
 So, you only need to **manually** care about the usual ASDF project files in
 `app.asd`.
 
+But -- *of course* -- you still need to run the respective **qmake** command
+every time you add new files to the project, because the automation is all
+defined in `app.pro`.
+
 
 Run desktop
 -----------

examples/wear-os-gps/cpp/qt.cpp

@@ -4,14 +4,15 @@
 
 QT_BEGIN_NAMESPACE
 
-QVariant QT::keepScreenOn() {
-  QtAndroid::runOnAndroidThread([] {
+QVariant QT::keepScreenOn(const QVariant& on) {
+  QtAndroid::runOnAndroidThread([&] {
     QAndroidJniObject activity = QtAndroid::androidActivity();
     if (activity.isValid()) {
       QAndroidJniObject window = activity.callObjectMethod("getWindow", "()Landroid/view/Window;");
       if (window.isValid()) {
         const int FLAG_KEEP_SCREEN_ON = 128;
-        window.callMethod<void>("addFlags", "(I)V", FLAG_KEEP_SCREEN_ON);
+        const char* method = on.toBool() ? "addFlags" : "clearFlags";
+        window.callMethod<void>(method, "(I)V", FLAG_KEEP_SCREEN_ON);
       }
     }
     QAndroidJniEnvironment env;

examples/wear-os-gps/cpp/qt.h

@@ -11,7 +11,7 @@ class QT : public QObject {
   Q_OBJECT
 
 public:
-  Q_INVOKABLE QVariant keepScreenOn();
+  Q_INVOKABLE QVariant keepScreenOn(const QVariant& = true);
 };
 
 QT_END_NAMESPACE

examples/wear-os-gps/lisp/main.lisp

@@ -8,8 +8,9 @@
   (qt:ini)
   #+android
   (progn
-    (qt:keep-screen-on qt:*cpp*)
-    (ensure-permissions :access-fine-location)))
+    (qlater (lambda () (qt:keep-screen-on qt:*cpp*))) ; delay until UI is loaded (see 'Settings.qml')
+    (ensure-permissions :access-fine-location))
+  (q> |ready| ui:*position-source* t))
 
 (defun closing ()
   (close *log-stream*)
@@ -64,4 +65,12 @@
               (round* (speed*) 1)
               (round* (distance))))))
 
+(defun always-on-changed (on) ; called from QML
+  #+android
+  (qt:keep-screen-on qt:*cpp* on))
+
+(defun set-max-speed () ; called from QML
+  (q> |maximumValue| ui:*speed*
+      (q< |value| ui:*max-speed*)))
+
 (qlater 'run)

examples/wear-os-gps/lisp/speed.lisp

@@ -1,14 +1,16 @@
 (in-package :gps)
 
+(defvar *distance-samples* 5)
+
 (let ((speed 0.0)
       samples)
   (defun update-speed ()
-    "After 10 distance samples, calculate average speed and update on every new
-    distance sample."
+    "After *DISTANCE-SAMPLES* samples, calculate average speed and update on
+    every new distance sample."
     (push (cons (distance)
                 (get-internal-real-time))
           samples)
-    (when (> (length samples) 10)
+    (when (> (length samples) *distance-samples*)
       (setf samples (butlast samples))
       (let ((b (first samples))
             (a (first (last samples))))

examples/wear-os-gps/lisp/ui-vars.lisp

@@ -3,10 +3,14 @@
   (:export
    #:*accuracy*
    #:*distance*
+   #:*max-speed*
+   #:*position-source*
    #:*speed*))
 
 (in-package :ui)
 
 (defparameter *accuracy*        "accuracy")
 (defparameter *distance*        "distance")
+(defparameter *max-speed*       "max_speed")
+(defparameter *position-source* "position_source")
 (defparameter *speed*           "speed")

examples/wear-os-gps/qml/ext/Gauge.qml

@@ -8,11 +8,11 @@ Rectangle {
   color: "black"
 
   CircularGauge {
-    id: gauge
+    id: speed
     objectName: "speed"
     anchors.fill: parent
     maximumValue: 10
-    stepSize: 0.1
+    stepSize: 0.05
 
     Behavior on value {
       NumberAnimation {
@@ -23,8 +23,8 @@ Rectangle {
 
     style: CircularGaugeStyle {
       id: style
-      labelStepSize: 1
-      tickmarkStepSize: 1
+      labelStepSize: parent.maximumValue / 10
+      tickmarkStepSize: labelStepSize
       minorTickmarkCount: 5
       minimumValueAngle: -90
       maximumValueAngle: 90
@@ -43,7 +43,7 @@ Rectangle {
           ctx.strokeStyle = limitColor
           ctx.lineWidth = outerRadius * 0.02
           ctx.arc(outerRadius, outerRadius, outerRadius - ctx.lineWidth / 2,
-                  toRad(valueToAngle(limit) - 90), toRad(valueToAngle(gauge.maximumValue) - 90))
+                  toRad(valueToAngle(limit) - 90), toRad(valueToAngle(speed.maximumValue) - 90))
           ctx.stroke()
         }
       }

examples/wear-os-gps/qml/ext/MainView.qml

@@ -0,0 +1,19 @@
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import "." as Ext
+
+Rectangle {
+  color: "black"
+
+  Ext.Gauge {}
+
+  Column {
+    anchors.horizontalCenter: parent.horizontalCenter
+    anchors.bottom: parent.bottom
+    anchors.bottomMargin: 10
+    spacing: -5
+
+    Ext.LogText { objectName: "distance"; font.pixelSize: 48 }
+    Ext.LogText { objectName: "accuracy"; font.pixelSize: 24 }
+  }
+}

examples/wear-os-gps/qml/ext/Settings.qml

@@ -0,0 +1,46 @@
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+
+Rectangle {
+  Column {
+    anchors.centerIn: parent
+
+    Text {
+      anchors.horizontalCenter: parent.horizontalCenter
+      text: "max speed"
+      font.pixelSize: 16
+      font.weight: Font.DemiBold
+    }
+
+    Tumbler {
+      id: maxSpeed
+      objectName: "max_speed"
+      anchors.horizontalCenter: parent.horizontalCenter
+      height: 80
+      model: [10, 20, 30, 40, 50]
+      visibleItemCount: 3
+
+      property int value: model[0]
+
+      delegate: Text {
+        text: modelData
+        font.pixelSize: 22
+        font.bold: true
+        opacity: 0.4 + Math.max(0, 1 - Math.abs(Tumbler.displacement)) * 0.6
+        Component.onCompleted: { maxSpeed.width = paintedWidth }
+      }
+
+      onCurrentIndexChanged: { value = model[currentIndex] }
+    }
+
+    Switch {
+      objectName: "always_on"
+      text: "always on"
+      font.pixelSize: 16
+      font.weight: Font.DemiBold
+      checked: true
+
+      onCheckedChanged: Lisp.call("gps:always-on-changed", checked)
+    }
+  }
+}

examples/wear-os-gps/qml/main.qml

@@ -14,7 +14,10 @@ Rectangle {
     updateInterval: 1000
     active: true
 
+    property bool ready: false
+
     onPositionChanged: {
+      if (ready) {
         Lisp.call("gps:position-changed",
                   position.latitudeValid           ? position.coordinate.latitude  : null,
                   position.longitudeValid          ? position.coordinate.longitude : null,
@@ -24,17 +27,38 @@ Rectangle {
                   position.timestamp.toLocaleString(Qt.locale(), "yyyy-MM-dd hh:mm:ss"))
       }
     }
+  }
 
-  Ext.Gauge {}
+  SwipeView {
+    id: view
+    anchors.fill: parent
+    orientation: Qt.Vertical
 
-  Column {
+    onCurrentIndexChanged: {
+      if (currentIndex === 0) {
+        Lisp.call("gps:set-max-speed")
+      }
+    }
+
+    Ext.MainView {}
+    Ext.Settings {}
+  }
+
+  PageIndicator {
+    id: indicator
+    anchors.bottom: view.bottom
     anchors.horizontalCenter: parent.horizontalCenter
-    anchors.bottom: parent.bottom
-    anchors.bottomMargin: 5
-    spacing: -5
+    height: 14
+    count: view.count
+    currentIndex: view.currentIndex
 
-    Ext.LogText { objectName: "distance"; font.pixelSize: 48 }
-    Ext.LogText { objectName: "accuracy"; font.pixelSize: 24 }
+    delegate: Rectangle {
+      implicitWidth: 6
+      implicitHeight: 6
+      radius: width / 2
+      color: "white"
+      opacity: index === indicator.currentIndex ? 1 : 0.35
+    }
   }
 
   // quit

examples/wear-os-gps/readme-build.md

@@ -7,6 +7,18 @@ requires WearOS 2 or later.
 
 It is assumed that you already enabled the developer settings on your watch.
 
+--
+
+Every Lisp file under `lisp/` and every qml/image/font/whatever file under
+`qml/` is added **automatically** to your Qt project file (both for re-compile
+and adding to resources included in the executable).
+
+So, you only need to **manually** care about the usual ASDF project files in
+`app.asd`.
+
+But -- *of course* -- you still need to run the respective **qmake** command
+every time you add new files to the project, because the automation is all
+defined in `app.pro`.
 
 
 Build 32bit android APK
@@ -27,7 +39,7 @@ Now you can build the app:
 ```
 $ cd build-android
 
-$ qmake-android "CONFIG+=32bit" ..
+$ qmake-android .. # "CONFIG+=32bit" can be omitted here: already defined in app.pro
 $ make apk
 
 $ ./install-run.sh

examples/wear-os-gps/readme.md

@@ -14,7 +14,12 @@ Info
 
 This is a practical example of displaying both the speed and the whole distance
 of e.g. a canoe session (only meant for constant altitude values). You probably
-need to adapt the maximum speed value (km/h) to your personal needs.
+need to adapt the maximum speed value (km/h) to your personal needs, see
+settings (swipe up).
+
+An important feature is keeping the display always on (implemented with the Qt
+JNI interface). But this also consumes more battery, so you can switch it off
+in the settings.
 
 The data is automatically logged, and can be accessed with e.g.
 **Device File Explorer** from Android Studio (see Help / Find Action...).
@@ -35,8 +40,8 @@ using **Google Earth** (the free desktop app).
 
 A simple **Kalman** filter is used for the necessary GPS data smoothing.
 
-The UI uses a `CircularGauge` for displaying the speed (an average of the
-latest 10 seconds). Additionally it shows the whole distance and the GPS
+The UI uses a `CircularGauge` for displaying the speed (by default, an average
+of the latest 5 seconds). Additionally it shows the whole distance and the GPS
 accuracy in meters.
 
 

examples/wear-os-heart/readme-build.md

@@ -10,6 +10,18 @@ You'll also need an easy to apply hack for the **heart rate sensor**, see
 
 It is assumed that you already enabled the developer settings on your watch.
 
+--
+
+Every Lisp file under `lisp/` and every qml/image/font/whatever file under
+`qml/` is added **automatically** to your Qt project file (both for re-compile
+and adding to resources included in the executable).
+
+So, you only need to **manually** care about the usual ASDF project files in
+`app.asd`.
+
+But -- *of course* -- you still need to run the respective **qmake** command
+every time you add new files to the project, because the automation is all
+defined in `app.pro`.
 
 
 Build 32bit android APK
@@ -30,7 +42,7 @@ Now you can build the app:
 ```
 $ cd build-android
 
-$ qmake-android "CONFIG+=32bit" ..
+$ qmake-android .. # "CONFIG+=32bit" can be omitted here: already defined in app.pro
 $ make apk
 
 $ ./install-run.sh