[gui] fade behavior

gui/components/FadeBehavior.qml

+/*
+MIT License
+
+Copyright (c) 2020 Pierre-Yves Siret
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+import QtQuick 2.15
+import QtQml 2.15
+
+Behavior {
+    id: root
+
+    property QtObject fadeTarget: targetProperty.object
+    property string fadeProperty: "scale"
+    property int fadeDuration: 300
+    property var fadeValue: 0
+    property string easingType: "Quad"
+
+    property alias exitAnimation: exitAnimation
+    property alias enterAnimation: enterAnimation
+
+    SequentialAnimation {
+        NumberAnimation {
+            id: exitAnimation
+            target: root.fadeTarget
+            property: root.fadeProperty
+            duration: root.fadeDuration
+            to: root.fadeValue
+            easing.type: root.easingType === "Linear" ? Easing.Linear : Easing["In"+root.easingType]
+        }
+        PropertyAction { }
+        NumberAnimation {
+            id: enterAnimation
+            target: root.fadeTarget
+            property: root.fadeProperty
+            duration: root.fadeDuration
+            to: target[property]
+            easing.type:  root.easingType === "Linear" ? Easing.Linear : Easing["Out"+root.easingType]
+        }
+    }
+}
+

gui/components/StatusBox.qml

@@ -86,6 +86,7 @@ Item {
             anchors.horizontalCenter: parent.horizontalCenter
             horizontalAlignment: Text.AlignHCenter
             text: ""
+            FadeBehavior on text { }
         }
     }
 
@@ -100,6 +101,11 @@ Item {
             height: 120
         }
 
+        // TODO this can be synced with opacity serial animation, see
+        // https://doc.qt.io/qt-5/qml-qtquick-animatedimage.html#example-usage
+        // If you want to customize your asset, here's how:
+        // convert -delay 50 -loop 0 ravens2_*.png ravens.gif
+
         AnimatedImage {
             id: connectionImage
             height: 160
@@ -107,12 +113,17 @@ Item {
             source: "../resources/icon-noshield.svg"
             anchors.horizontalCenter: parent.horizontalCenter
             fillMode: Image.PreserveAspectFit
-            onStatusChanged: playing = (status == AnimatedImage.Ready)
+            OpacityAnimator on opacity{
+                id: fadeIn
+                from: 0.5;
+                to: 1;
+                duration: 1000
+            }
+            onStatusChanged: {
+                playing = (status == AnimatedImage.Ready)
+                fadeIn.start()
+            }
         }
-        // TODO this can be synced with opacity serial animation, see
-        // https://doc.qt.io/qt-5/qml-qtquick-animatedimage.html#example-usage
-        // If you want to customize your asset, here's how:
-        // convert -delay 50 -loop 0 ravens2_*.png ravens.gif
 
         VerticalSpacer {
             id: spacerPostImg

gui/components/VPNState.qml

@@ -155,20 +155,23 @@ StateGroup {
         },
         State {
             name: stopping
+            /*
+            this transition is bad. let's just remove the status
+            switch...
             PropertyChanges {
                 target: connectionState
                 text: "Switching\nOff"
             }
             PropertyChanges {
-                target: statusBoxBackground
-                border.color: Theme.accentConnecting
-            }
-            PropertyChanges {
-                // ?? is this image correct?
                 target: connectionImage
                 source: "../resources/ravens.svg"
                 anchors.horizontalCenter: parent.horizontalCenter
             }
+            */
+            PropertyChanges {
+                target: statusBoxBackground
+                border.color: Theme.accentConnecting
+            }
             PropertyChanges {
                 target: systray
                 tooltip: toHuman("stopping")

gui/gui.qrc

@@ -9,6 +9,7 @@
         <file>components/MainView.qml</file>
         <file>components/ThemedPage.qml</file>
         <file>components/Splash.qml</file>
+        <file>components/FadeBehavior.qml</file>
         <file>components/Home.qml</file>
         <file>components/Header.qml</file>
         <file>components/Footer.qml</file>