Added grab() function in ShaderEffectSource.

Calling grab() on a ShaderEffectSource will force it to update
its texture.

3 files changed, 53 insertions, 0 deletions

diff --git a/src/effects/shadereffectitem.cpp b/src/effects/shadereffectitem.cpp
index e19602e..de5bd83 100644
--- a/src/effects/shadereffectitem.cpp
+++ b/src/effects/shadereffectitem.cpp
@@ -501,6 +501,12 @@ void ShaderEffectSource::update()
     m_dirtyTexture = false;
 }
 
+void ShaderEffectSource::grab()
+{
+    m_dirtyTexture = true;
+    emit repaintRequired();
+}
+
 void ShaderEffectSource::markSceneGraphDirty()
 {
     m_dirtySceneGraph = true;
diff --git a/src/effects/shadereffectitem.h b/src/effects/shadereffectitem.h
index 7667f65..15cfb54 100644
--- a/src/effects/shadereffectitem.h
+++ b/src/effects/shadereffectitem.h
@@ -136,6 +136,8 @@ public:
     void derefFromEffectItem();
     void update();
 
+    Q_INVOKABLE void grab();
+
 Q_SIGNALS:
     void sourceItemChanged();
     void sourceImageChanged();
diff --git a/tests/effects.qml b/tests/effects.qml
index b6389bc..41d01d0 100644
--- a/tests/effects.qml
+++ b/tests/effects.qml
@@ -166,6 +166,7 @@ Rectangle {
             drag.target.y = y
             drag.target.z = 0
         }
+        onClicked: { effectSource2.grab(); grabbedAnim2.restart() }
     }
 
     Item {
@@ -229,6 +230,20 @@ Rectangle {
             text: effectSource2.hideOriginal ? "Hidden" : "Shown"
             MouseArea { anchors.fill: parent; onClicked: { effectSource2.hideOriginal = !effectSource2.hideOriginal } }
         }
+        Text {
+            anchors.centerIn: parent
+            color: "red"
+            font.pixelSize: 12
+            text: "Grabbed"
+            opacity: 0
+            SequentialAnimation on opacity {
+                id: grabbedAnim2
+                running: false
+                PropertyAction { value: 1 }
+                PauseAnimation { duration: 1000 }
+                NumberAnimation { to: 0; duration: 1000 }
+            }
+        }
     }
 
     MouseArea {
@@ -264,6 +279,7 @@ Rectangle {
             drag.target.y = y
             drag.target.z = 0
         }
+        onClicked: { effectSource3.grab(); grabbedAnim3.restart() }
     }
 
     Item {
@@ -326,6 +342,20 @@ Rectangle {
             text: effectSource3.hideOriginal ? "Hidden" : "Shown"
             MouseArea { anchors.fill: parent; onClicked: { effectSource3.hideOriginal = !effectSource3.hideOriginal } }
         }
+        Text {
+            anchors.centerIn: parent
+            color: "red"
+            font.pixelSize: 12
+            text: "Grabbed"
+            opacity: 0
+            SequentialAnimation on opacity {
+                id: grabbedAnim3
+                running: false
+                PropertyAction { value: 1 }
+                PauseAnimation { duration: 1000 }
+                NumberAnimation { to: 0; duration: 1000 }
+            }
+        }
     }
 
     MouseArea {
@@ -418,6 +448,7 @@ Rectangle {
             drag.target.y = y
             drag.target.z = 0
         }
+        onClicked: { effectSource5.grab(); grabbedAnim5.restart() }
     }
 
     Item {
@@ -479,6 +510,20 @@ Rectangle {
             text: effectSource5.hideOriginal ? "Hidden" : "Shown"
             MouseArea { anchors.fill: parent; onClicked: { effectSource5.hideOriginal = !effectSource5.hideOriginal } }
         }
+        Text {
+            anchors.centerIn: parent
+            color: "red"
+            font.pixelSize: 12
+            text: "Grabbed"
+            opacity: 0
+            SequentialAnimation on opacity {
+                id: grabbedAnim5
+                running: false
+                PropertyAction { value: 1 }
+                PauseAnimation { duration: 1000 }
+                NumberAnimation { to: 0; duration: 1000 }
+            }
+        }
     }
 
     MouseArea {