feat: aggiungi splash screen costruttivista per KDE Plasma

README.md

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+# Costruttivista — schermata di avvio Plasma 6
+
+Tema splash autonomo per KDE Plasma 6. L'immagine e tutti i componenti necessari sono inclusi nel pacchetto; non usa rete, video o dipendenze esterne.
+
+## Installazione
+
+Dalla directory che contiene il progetto:
+
+```sh
+kpackagetool6 -t Plasma/LookAndFeel -i ./org.enne2.costruttivista.splash
+```
+
+In alternativa si può passare allo stesso comando l'archivio `dist/org.enne2.costruttivista.splash.tar.gz` incluso nel repository.
+
+## Attivazione
+
+Aprire **Impostazioni di sistema → Colori e temi → Schermata di avvio**, selezionare **Costruttivista** e applicare. Il pacchetto non viene installato né attivato automaticamente.

contents/splash/Splash.qml

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+import QtQuick
+
+Rectangle {
+    id: root
+    color: "#101012"
+    property int stage: 0
+    readonly property int visibleStage: Math.max(0, Math.min(5, stage))
+
+    Item {
+        id: scene
+        anchors.fill: parent
+        opacity: 0
+
+        Image {
+            id: background
+            anchors.fill: parent
+            source: "images/sfondo_costruttivista_fhd.png"
+            fillMode: Image.PreserveAspectCrop
+            asynchronous: true
+            cache: true
+        }
+
+        Rectangle {
+            anchors.fill: parent
+            color: "#12000000"
+            opacity: overlayFade.value
+        }
+
+        // Accenti geometrici dimensionati rispetto allo schermo.
+        Item {
+            id: accents
+            anchors.fill: parent
+
+            Rectangle {
+                id: redBar
+                x: parent.width * 0.07
+                y: parent.height * 0.15
+                width: Math.max(5, parent.width * 0.008)
+                height: parent.height * 0.27
+                color: "#d83a28"
+                opacity: 0.9
+                transform: Translate { id: redShift; y: -root.height * 0.10 }
+            }
+
+            Rectangle {
+                id: creamLine
+                x: parent.width * 0.07
+                y: parent.height * 0.44
+                width: parent.width * 0.20
+                height: Math.max(2, parent.height * 0.004)
+                color: "#f0dfba"
+                opacity: 0.85
+                transform: Translate { id: lineShift; x: -root.width * 0.12 }
+            }
+
+            Rectangle {
+                id: darkBar
+                x: parent.width * 0.82
+                y: parent.height * 0.60
+                width: Math.max(4, parent.width * 0.005)
+                height: parent.height * 0.20
+                color: "#181719"
+                opacity: 0.75
+                transform: Translate { id: darkShift; y: root.height * 0.09 }
+            }
+        }
+
+        Rectangle {
+            id: progressCue
+            width: Math.min(root.width * 0.76, 720)
+            height: Math.max(150, Math.min(root.height * 0.25, 230))
+            anchors.horizontalCenter: parent.horizontalCenter
+            anchors.bottom: parent.bottom
+            anchors.bottomMargin: Math.max(28, root.height * 0.085)
+            color: "#d9151517"
+            border.color: "#66f0dfba"
+            border.width: Math.max(1, root.height * 0.002)
+
+            // Un grande marchio geometrico continua a ruotare anche quando lo
+            // stadio comunicato da Plasma non cambia.
+            Item {
+                id: loaderMark
+                width: Math.max(82, Math.min(progressCue.height * 0.62, 132))
+                height: width
+                anchors.left: parent.left
+                anchors.leftMargin: Math.max(22, progressCue.width * 0.045)
+                anchors.verticalCenter: parent.verticalCenter
+
+                Rectangle {
+                    anchors.fill: parent
+                    anchors.margins: loaderMark.width * 0.09
+                    radius: width / 2
+                    color: "transparent"
+                    border.color: "#f0dfba"
+                    border.width: Math.max(5, loaderMark.width * 0.075)
+                    opacity: 0.92
+                }
+
+                Item {
+                    id: rotor
+                    anchors.fill: parent
+
+                    Rectangle {
+                        width: parent.width * 0.48
+                        height: Math.max(12, parent.height * 0.16)
+                        anchors.right: parent.right
+                        anchors.verticalCenter: parent.verticalCenter
+                        color: "#d83a28"
+                    }
+
+                    Rectangle {
+                        width: Math.max(11, parent.width * 0.14)
+                        height: parent.height * 0.42
+                        anchors.horizontalCenter: parent.horizontalCenter
+                        anchors.top: parent.top
+                        color: "#f0dfba"
+                    }
+
+                    RotationAnimator on rotation {
+                        from: 0
+                        to: 360
+                        duration: 1200
+                        loops: Animation.Infinite
+                        running: scene.opacity > 0
+                    }
+                }
+
+                Rectangle {
+                    width: parent.width * 0.25
+                    height: width
+                    anchors.centerIn: parent
+                    color: "#171719"
+                    border.color: "#d83a28"
+                    border.width: Math.max(3, width * 0.15)
+                    rotation: 45
+                }
+            }
+
+            Item {
+                id: loadingInfo
+                anchors.left: loaderMark.right
+                anchors.leftMargin: Math.max(22, progressCue.width * 0.045)
+                anchors.right: parent.right
+                anchors.rightMargin: Math.max(22, progressCue.width * 0.045)
+                anchors.verticalCenter: parent.verticalCenter
+                height: Math.max(92, parent.height * 0.58)
+
+                Text {
+                    id: statusLabel
+                    anchors.left: parent.left
+                    anchors.right: parent.right
+                    anchors.top: parent.top
+                    text: root.visibleStage === 5 ? "SESSIONE PRONTA" : "AVVIO DELLA SESSIONE"
+                    color: "#f3e2bd"
+                    font.pixelSize: Math.max(17, Math.min(root.width * 0.022, 30))
+                    font.bold: true
+                    font.letterSpacing: Math.max(1, font.pixelSize * 0.08)
+                    elide: Text.ElideRight
+                }
+
+                Text {
+                    anchors.left: parent.left
+                    anchors.top: statusLabel.bottom
+                    anchors.topMargin: 5
+                    text: "CARICAMENTO  /  FASE " + root.visibleStage + " DI 5"
+                    color: "#d83a28"
+                    font.pixelSize: Math.max(11, Math.min(root.width * 0.012, 16))
+                    font.bold: true
+                    font.letterSpacing: 1
+                }
+
+                Row {
+                    anchors.left: parent.left
+                    anchors.right: parent.right
+                    anchors.bottom: parent.bottom
+                    height: Math.max(18, Math.min(root.height * 0.026, 28))
+                    spacing: Math.max(5, root.width * 0.005)
+
+                    Repeater {
+                        model: 5
+                        Rectangle {
+                            required property int index
+                            width: (loadingInfo.width - 4 * parent.spacing) / 5
+                            height: parent.height
+                            color: index < root.visibleStage ? "#d83a28" : "#4df0dfba"
+                            border.color: "#b3f0dfba"
+                            border.width: 1
+
+                            Behavior on color { ColorAnimation { duration: 260 } }
+
+                            Rectangle {
+                                anchors.fill: parent
+                                color: "#f0dfba"
+                                opacity: 0
+                                SequentialAnimation on opacity {
+                                    loops: Animation.Infinite
+                                    PauseAnimation { duration: index * 120 }
+                                    NumberAnimation { from: 0; to: 0.38; duration: 180 }
+                                    NumberAnimation { from: 0.38; to: 0; duration: 360 }
+                                    PauseAnimation { duration: (4 - index) * 120 + 280 }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            Rectangle {
+                width: Math.max(10, progressCue.width * 0.025)
+                height: progressCue.height
+                color: "#d83a28"
+                anchors.left: parent.left
+                anchors.top: parent.top
+            }
+        }
+    }
+
+    QtObject { id: overlayFade; property real value: 0.0 }
+
+    ParallelAnimation {
+        id: intro
+        NumberAnimation { target: scene; property: "opacity"; from: 0; to: 1; duration: 700; easing.type: Easing.OutCubic }
+        NumberAnimation { target: overlayFade; property: "value"; from: 0; to: 1; duration: 900 }
+        NumberAnimation { target: redShift; property: "y"; to: 0; duration: 850; easing.type: Easing.OutCubic }
+        NumberAnimation { target: lineShift; property: "x"; to: 0; duration: 950; easing.type: Easing.OutCubic }
+        NumberAnimation { target: darkShift; property: "y"; to: 0; duration: 1050; easing.type: Easing.OutCubic }
+    }
+
+    NumberAnimation {
+        id: outro
+        target: scene
+        property: "opacity"
+        to: 0
+        duration: 450
+        easing.type: Easing.InOutQuad
+    }
+
+    Component.onCompleted: intro.start()
+    onStageChanged: {
+        if (stage === 5) {
+            outro.start()
+        } else if (scene.opacity === 0 && !intro.running) {
+            intro.start()
+        }
+    }
+}

metadata.json

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+{
+    "KPackageStructure": "Plasma/LookAndFeel",
+    "KPlugin": {
+        "Authors": [
+            {
+                "Name": "enne2"
+            }
+        ],
+        "Category": "Aspetto",
+        "Description": "Schermata di avvio costruttivista per KDE Plasma 6",
+        "Description[it]": "Schermata di avvio costruttivista per KDE Plasma 6",
+        "Id": "org.enne2.costruttivista.splash",
+        "License": "Proprietary",
+        "Name": "Costruttivista",
+        "Name[it]": "Costruttivista",
+        "Version": "1.0.0",
+        "Website": ""
+    },
+    "X-Plasma-APIVersion": "2"
+}