about: fix offscreen modal bug on scaled multi-monitor

Change-Id: Id39e14ac93b68a2c8d069e5a4d2ac5e3aa07f140

src/mainview/MainView.qml

@@ -523,6 +523,9 @@ Window {
 
     AboutPopUp {
         id: aboutPopUpDialog
+
+        height: Math.min(preferredHeight,
+                         mainViewWindow.height - JamiTheme.preferredMarginSize * 2)
     }
 
     WelcomePageQrDialog {

src/mainview/components/AboutPopUp.qml

@@ -25,12 +25,10 @@ import net.jami.Adapters 1.0
 import "../../constant"
 import "../../commoncomponents"
 
-BaseDialog {
+ModalPopup {
     id: root
 
-    height: aboutPopUpContentRectColumnLayout.implicitHeight
-
-    title: qsTr("About")
+    property alias preferredHeight: aboutPopUpContentRectColumnLayout.implicitHeight
 
     ProjectCreditsScrollView {
         id: projectCreditsScrollView
@@ -70,13 +68,13 @@ BaseDialog {
 
                     Layout.alignment: Qt.AlignCenter
 
-                    ResponsiveImage {
+                    Image {
                         id: aboutPopUPJamiLogoImage
 
                         Layout.alignment: Qt.AlignCenter
                         Layout.topMargin: JamiTheme.preferredMarginSize
-                        Layout.preferredWidth: contentRect.width
-                        Layout.preferredHeight: 100
+                        Layout.preferredWidth: 250
+                        Layout.preferredHeight: 88
 
                         smooth: true
                         antialiasing: true
@@ -289,7 +287,7 @@ BaseDialog {
 
                         Layout.alignment: Qt.AlignCenter
                         Layout.preferredWidth: contentRect.width - JamiTheme.preferredMarginSize * 2
-                        Layout.preferredHeight: 150
+                        Layout.preferredHeight: 128
                         Layout.margins: JamiTheme.preferredMarginSize
 
                         initialItem: changeLogScrollView

src/mainview/components/ProjectCreditsScrollView.qml

@@ -41,7 +41,7 @@ ScrollView {
         readOnly: true
         wrapMode: Text.WordWrap
 
-        font.pointSize: JamiTheme.textFontSize - 3
+        font.pointSize: JamiTheme.textFontSize
         text: UtilsAdapter.getProjectCredits()
         textFormat: TextEdit.RichText