refactor: copy InhibitionHint from battery applet

Similar to [1].

[1] https://invent.kde.org/plasma/kscreen/-/commit/a0533d12

plasma-integration/plasmoid/package/contents/ui/InhibitionHint.qml

@@ -0,0 +1,37 @@
+/*
+    SPDX-FileCopyrightText: 2015 Kai Uwe Broulik <kde@privat.broulik.de>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+import QtQuick 2.15
+import QtQuick.Layouts 1.15
+
+import org.kde.plasma.components 3.0 as PlasmaComponents3
+import org.kde.kirigami 2.20 as Kirigami
+
+// everything like in battery applet, but slightly bigger
+RowLayout {
+    property alias iconSource: iconItem.source
+    property alias text: label.text
+
+    spacing: Kirigami.Units.smallSpacing * 2
+
+    Kirigami.Icon {
+        id: iconItem
+        Layout.preferredWidth: Kirigami.Units.iconSizes.medium
+        Layout.preferredHeight: Kirigami.Units.iconSizes.medium
+        visible: valid
+    }
+
+    PlasmaComponents3.Label {
+        id: label
+        Layout.fillWidth: true
+        Layout.maximumWidth: Math.min(Kirigami.Units.gridUnit * 20, implicitWidth)
+        font: Kirigami.Theme.smallFont
+        textFormat: Text.PlainText
+        wrapMode: Text.WordWrap
+        elide: Text.ElideRight
+        maximumLineCount: 4
+    }
+}

plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml

@@ -79,43 +79,29 @@ ColumnLayout {
         wrapMode: Text.WordWrap
     }
 
-    RowLayout {
+    InhibitionHint {
         Layout.fillWidth: true
         Layout.leftMargin: presentationModeSwitch.indicator.width + presentationModeSwitch.spacing
-        spacing: Kirigami.Units.smallSpacing
 
-        PlasmaCore.IconItem {
-            Layout.preferredWidth: Kirigami.Units.iconSizes.medium
-            Layout.preferredHeight: Kirigami.Units.iconSizes.medium
-            source: pmSource.inhibitions[0] ? pmSource.inhibitions[0].Icon || "" : ""
-            visible: valid
-        }
-
-        PlasmaComponents3.Label {
-            Layout.fillWidth: true
-            Layout.maximumWidth: Math.min(Kirigami.Units.gridUnit * 20, implicitWidth)
-            font.pointSize: theme.smallestFont.pointSize
-            wrapMode: Text.WordWrap
-            elide: Text.ElideRight
-            textFormat: Text.PlainText
-            text: {
-                var inhibitions = pmSource.inhibitions;
-                if (inhibitions.length > 1) {
-                    return i18ncp("Some Application and n others enforce presentation mode",
-                                  "%2 and %1 other application are enforcing presentation mode.",
-                                  "%2 and %1 other applications are enforcing presentation mode.",
-                                  inhibitions.length - 1, inhibitions[0].Name) // plural only works on %1
-                } else if (inhibitions.length === 1) {
-                    if (!inhibitions[0].Reason) {
-                        return i18nc("Some Application enforce presentation mode",
-                                     "%1 is enforcing presentation mode.", inhibitions[0].Name)
-                    } else {
-                        return i18nc("Some Application enforce presentation mode: Reason provided by the app",
-                                     "%1 is enforcing presentation mode: %2", inhibitions[0].Name, inhibitions[0].Reason)
-                    }
+        iconSource: pmSource.inhibitions.length > 0 ? pmSource.inhibitions[0].Icon || "" : ""
+        text: {
+            const inhibitions = pmSource.inhibitions;
+            const inhibition = inhibitions[0];
+            if (inhibitions.length > 1) {
+                return i18ncp("Some Application and n others enforce presentation mode",
+                              "%2 and %1 other application are enforcing presentation mode.",
+                              "%2 and %1 other applications are enforcing presentation mode.",
+                              inhibitions.length - 1, inhibition.Name) // plural only works on %1
+            } else if (inhibitions.length === 1) {
+                if (!inhibition.Reason) {
+                    return i18nc("Some Application enforce presentation mode",
+                                 "%1 is enforcing presentation mode.", inhibition.Name)
                 } else {
-                    return "";
+                    return i18nc("Some Application enforce presentation mode: Reason provided by the app",
+                                 "%1 is enforcing presentation mode: %2", inhibition.Name, inhibition.Reason)
                 }
+            } else {
+                return "";
             }
         }
     }

plasma-integration/po/plasma_applet_org.kwinft.kdisplay.pot

@@ -69,21 +69,21 @@ msgid ""
 "This will prevent your display and computer from turning off automatically."
 msgstr ""
 
-#: plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml:105
+#: plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml:92
 #, kde-format
 msgctxt "Some Application and n others enforce presentation mode"
 msgid "%2 and %1 other application are enforcing presentation mode."
 msgid_plural "%2 and %1 other applications are enforcing presentation mode."
 msgstr[0] ""
 msgstr[1] ""
 
-#: plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml:111
+#: plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml:98
 #, kde-format
 msgctxt "Some Application enforce presentation mode"
 msgid "%1 is enforcing presentation mode."
 msgstr ""
 
-#: plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml:114
+#: plasma-integration/plasmoid/package/contents/ui/PresentationModeItem.qml:101
 #, kde-format
 msgctxt ""
 "Some Application enforce presentation mode: Reason provided by the app"