StudioWelcome: Remove effect from splash screen

Not supported with Qt 6.

Change-Id: Ie12c5b15caaa6b80dcb3dc26fdf43b360b6761a5
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/studiowelcome/qml/splashscreen/Dof_Effect.qml

@@ -23,19 +23,13 @@
 **
 ****************************************************************************/
 
-import QtQuick 2.0
+import QtQuick 2.0
-import QtGraphicalEffects 1.0
 
 Item {
     id: root
     default property alias content: stack.children
     property alias maskBlurRadius: maskedBlur.radius
     property alias maskBlurSamples: maskedBlur.samples
-    property alias gradientStopPosition1: stop1.position
-    property alias gradientStopPosition2: stop2.position
-    property alias gradientStopPosition3: stop3.position
-    property alias gradientStopPosition4: stop4.position
-    property alias maskRotation: gradient.rotation
 
     Row {
         visible: true
@@ -47,47 +41,13 @@ Item {
         width: stack.width
         height: stack.height
         visible: false
-
-        LinearGradient {
-            id: gradient
-            height: stack.height * 2
-            width: stack.width * 2
-            y: -stack.height / 2
-            x: -stack.width / 2
-            rotation: 0
-            gradient: Gradient {
-                GradientStop {
-                    id: stop1
-                    position: 0.2
-                    color: "#ffffffff"
-                }
-                GradientStop {
-                    id: stop2
-                    position: 0.5
-                    color: "#00ffffff"
-                }
-                GradientStop {
-                    id: stop3
-                    position: 0.8
-                    color: "#00ffffff"
-                }
-                GradientStop {
-                    id: stop4
-                    position: 1.0
-                    color: "#ffffffff"
-                }
-            }
-            start: Qt.point(stack.width / 2, 0)
-            end: Qt.point(stack.width + stack.width / 2, 100)
-        }
     }
 
-    MaskedBlur {
+    ShaderEffectSource {
         id: maskedBlur
         anchors.fill: stack
-        source: stack
+        sourceItem: stack
-        maskSource: mask
+        property real radius: 0
-        radius: 32
+        property real samples: 0
-        samples: 16
     }
 }

src/plugins/studiowelcome/qml/splashscreen/Welcome_splash.qml

@@ -192,10 +192,6 @@ Image {
         visible: true
         maskBlurSamples: 64
         maskBlurRadius: 32
-        gradientStopPosition4: 1.3
-        gradientStopPosition3: 0.9
-        gradientStopPosition2: 0.6
-        gradientStopPosition1: 0
 
         Splash_Image25d {
             id: animated_artwork