Code cleanup for the code snippets

21 files changed, 73 insertions, 71 deletions

diff --git a/doc/src/snippets/Blend-example.qml b/doc/src/snippets/Blend-example.qml
index 2b830ab..ca33890 100644
--- a/doc/src/snippets/Blend-example.qml
+++ b/doc/src/snippets/Blend-example.qml
@@ -49,7 +49,7 @@ Item {
     height: 300
 
     Image {
-        id: blendSourceItem1
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -57,7 +57,7 @@ Item {
     }
 
     Image {
-        id: blendSourceItem2
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -65,9 +65,9 @@ Item {
     }
 
     Blend {
-        anchors.fill: blendSourceItem1
-        backgroundSource: blendSourceItem1
-        foregroundSource: blendSourceItem2
+        anchors.fill: bug
+        backgroundSource: bug
+        foregroundSource: butterfly
         mode: "subtract"
     }
 }
diff --git a/doc/src/snippets/BrightnessContrast-example.qml b/doc/src/snippets/BrightnessContrast-example.qml
index fba744f..a439194 100644
--- a/doc/src/snippets/BrightnessContrast-example.qml
+++ b/doc/src/snippets/BrightnessContrast-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: brightnessContrastSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     BrightnessContrast {
-        anchors.fill: brightnessContrastSourceItem
-        source: brightnessContrastSourceItem
+        anchors.fill: bug
+        source: bug
         brightness: -0.2
         contrast: 0.3
     }
diff --git a/doc/src/snippets/ColorOverlay-example.qml b/doc/src/snippets/ColorOverlay-example.qml
index a32572e..5cb223f 100644
--- a/doc/src/snippets/ColorOverlay-example.qml
+++ b/doc/src/snippets/ColorOverlay-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: colorOverlaySourceItem
+        id: bug
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     ColorOverlay {
-        anchors.fill: colorOverlaySourceItem
-        source: colorOverlaySourceItem
+        anchors.fill: bug
+        source: bug
         color: "#80800000"
     }
 }
diff --git a/doc/src/snippets/Colorize-example.qml b/doc/src/snippets/Colorize-example.qml
index d9b19d0..1b1191a 100644
--- a/doc/src/snippets/Colorize-example.qml
+++ b/doc/src/snippets/Colorize-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: colorizeSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     Colorize {
-        anchors.fill: colorizeSourceItem
-        source: colorizeSourceItem
+        anchors.fill: bug
+        source: bug
         hue: 0.5
         saturation: 0.5
         lightness: -0.2
diff --git a/doc/src/snippets/Desaturate-example.qml b/doc/src/snippets/Desaturate-example.qml
index 884e48b..3878fbf 100644
--- a/doc/src/snippets/Desaturate-example.qml
+++ b/doc/src/snippets/Desaturate-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: desaturateSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     Desaturate {
-        anchors.fill: desaturateSourceItem
-        source: desaturateSourceItem
+        anchors.fill: bug
+        source: bug
         desaturation: 0.8
     }
 }
diff --git a/doc/src/snippets/DirectionalBlur-example.qml b/doc/src/snippets/DirectionalBlur-example.qml
index 84e1b21..b8a494f 100644
--- a/doc/src/snippets/DirectionalBlur-example.qml
+++ b/doc/src/snippets/DirectionalBlur-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: directionalBlurSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     DirectionalBlur {
-        anchors.fill: directionalBlurSourceItem
-        source: directionalBlurSourceItem
+        anchors.fill: butterfly
+        source: butterfly
         angle: 90
         length: 32
         samples: 32
diff --git a/doc/src/snippets/Displace-example.qml b/doc/src/snippets/Displace-example.qml
index cde1394..989fd67 100644
--- a/doc/src/snippets/Displace-example.qml
+++ b/doc/src/snippets/Displace-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: displacementSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,9 +55,10 @@ Item {
     }
 
     Rectangle {
-        id: displacementMapItem
+        id: displacement
         color: Qt.rgba(0.5, 0.5, 1.0, 1.0)
         anchors.fill: parent
+        visible: false
         Image {
             anchors.centerIn: parent
             source: "images/displacementmap.png"
@@ -67,9 +68,9 @@ Item {
     }
 
     Displace {
-        anchors.fill: displacementSourceItem
-        source: displacementSourceItem
-        displacementSource: ShaderEffectSource { hideSource: true; smooth: true; sourceItem: displacementMapItem; visible: false }
+        anchors.fill: bug
+        source: bug
+        displacementSource: displacement
         displacement: 0.1
     }
 }
diff --git a/doc/src/snippets/DropShadow-example.qml b/doc/src/snippets/DropShadow-example.qml
index 18e4c76..e0e366a 100644
--- a/doc/src/snippets/DropShadow-example.qml
+++ b/doc/src/snippets/DropShadow-example.qml
@@ -51,17 +51,17 @@ Item {
     }
 
     DropShadow {
-        anchors.fill: dropShadowSourceItem
+        anchors.fill: butterfly
         horizontalOffset: 3
         verticalOffset: 3
         radius: 8.0
         maximumRadius: 8.0
         color: "#80000000"
-        source: dropShadowSourceItem
+        source: butterfly
     }
 
     Image {
-        id: dropShadowSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
diff --git a/doc/src/snippets/FastBlur-example.qml b/doc/src/snippets/FastBlur-example.qml
index e154d4d..ae7b022 100644
--- a/doc/src/snippets/FastBlur-example.qml
+++ b/doc/src/snippets/FastBlur-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: fastBlurSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     FastBlur {
-        anchors.fill: fastBlurSourceItem
-        source: fastBlurSourceItem
+        anchors.fill: bug
+        source: bug
         blur: 0.5
     }
 }
diff --git a/doc/src/snippets/GammaAdjust-example.qml b/doc/src/snippets/GammaAdjust-example.qml
index 9784646..0331f28 100644
--- a/doc/src/snippets/GammaAdjust-example.qml
+++ b/doc/src/snippets/GammaAdjust-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: gammaAdjustSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     GammaAdjust {
-        anchors.fill: gammaAdjustSourceItem
-        source: gammaAdjustSourceItem
+        anchors.fill: bug
+        source: bug
         gamma: 0.45
     }
 }
diff --git a/doc/src/snippets/GaussianBlur-example.qml b/doc/src/snippets/GaussianBlur-example.qml
index 15954fd..0bd750c 100644
--- a/doc/src/snippets/GaussianBlur-example.qml
+++ b/doc/src/snippets/GaussianBlur-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: gaussianBlurSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     GaussianBlur {
-        anchors.fill: gaussianBlurSourceItem
-        source: gaussianBlurSourceItem
+        anchors.fill: bug
+        source: bug
         radius: 8
         maximumRadius: 8
     }
diff --git a/doc/src/snippets/Glow-example.qml b/doc/src/snippets/Glow-example.qml
index a6572d7..33bfb0a 100644
--- a/doc/src/snippets/Glow-example.qml
+++ b/doc/src/snippets/Glow-example.qml
@@ -52,15 +52,15 @@ Item {
     }
 
     Glow {
-        anchors.fill: glowSourceItem
+        anchors.fill: butterfly
         radius: 8
         maximumRadius: 8
         color: "white"
-        source: glowSourceItem
+        source: butterfly
     }
 
     Image {
-        id: glowSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
diff --git a/doc/src/snippets/HueSaturation-example.qml b/doc/src/snippets/HueSaturation-example.qml
index da83b78..29ad075 100644
--- a/doc/src/snippets/HueSaturation-example.qml
+++ b/doc/src/snippets/HueSaturation-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: hueSaturationSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     HueSaturation {
-        anchors.fill: hueSaturationSourceItem
-        source: hueSaturationSourceItem
+        anchors.fill: bug
+        source: bug
         hue: -0.3
         saturation: 0.5
         lightness: -0.1
diff --git a/doc/src/snippets/InnerShadow-example.qml b/doc/src/snippets/InnerShadow-example.qml
index fad9eff..85c652e 100644
--- a/doc/src/snippets/InnerShadow-example.qml
+++ b/doc/src/snippets/InnerShadow-example.qml
@@ -51,7 +51,7 @@ Item {
     }
 
     Image {
-        id: innerShadowSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -59,11 +59,11 @@ Item {
     }
 
     InnerShadow {
-        anchors.fill: innerShadowSourceItem
+        anchors.fill: butterfly
         radius: 16.0
         maximumRadius: 16.0
         color: "black"
-        source: innerShadowSourceItem
+        source: butterfly
     }
 
 }
diff --git a/doc/src/snippets/LevelAdjust-example.qml b/doc/src/snippets/LevelAdjust-example.qml
index 0580745..ec769ad 100644
--- a/doc/src/snippets/LevelAdjust-example.qml
+++ b/doc/src/snippets/LevelAdjust-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: levelAdjustSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     LevelAdjust {
-        anchors.fill: levelAdjustSourceItem
-        source: levelAdjustSourceItem
+        anchors.fill: butterfly
+        source: butterfly
         minimumOutput: "#00000000"
         maximumOutput: "#FF1010FF"
     }
diff --git a/doc/src/snippets/OpacityMask-example.qml b/doc/src/snippets/OpacityMask-example.qml
index 6c8a69f..bc3320e 100644
--- a/doc/src/snippets/OpacityMask-example.qml
+++ b/doc/src/snippets/OpacityMask-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: opacityMaskSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,10 +55,11 @@ Item {
     }
 
     Image {
-        id: opacityMaskItem
+        id: mask
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
+        visible: false
         Text {
             text: "MASK"
             font.pixelSize: 60
@@ -71,9 +72,9 @@ Item {
     }
 
     OpacityMask {
-        anchors.fill: opacityMaskSourceItem
-        source: opacityMaskSourceItem
-        maskSource: ShaderEffectSource { hideSource: true; smooth: true; sourceItem: opacityMaskItem; visible: false }
+        anchors.fill: bug
+        source: bug
+        maskSource: mask
     }
 }
 //! [example]
diff --git a/doc/src/snippets/RadialBlur-example.qml b/doc/src/snippets/RadialBlur-example.qml
index d13b5b9..3562390 100644
--- a/doc/src/snippets/RadialBlur-example.qml
+++ b/doc/src/snippets/RadialBlur-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: radialBlurSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     RadialBlur {
-        anchors.fill: radialBlurSourceItem
-        source: radialBlurSourceItem
+        anchors.fill: butterfly
+        source: butterfly
         samples: 32
         angle: 30
     }
diff --git a/doc/src/snippets/RectangularGlow-example.qml b/doc/src/snippets/RectangularGlow-example.qml
index 2daeff2..3ba9e4b 100644
--- a/doc/src/snippets/RectangularGlow-example.qml
+++ b/doc/src/snippets/RectangularGlow-example.qml
@@ -53,15 +53,15 @@ Item {
 
     RectangularGlow {
         id: effect
-        anchors.fill: rectangularGlowSource
+        anchors.fill: rect
         glowRadius: 10
         spread: 0.2
         color: "white"
-        cornerRadius: rectangularGlowSource.radius + glowRadius
+        cornerRadius: rect.radius + glowRadius
     }
 
     Rectangle {
-        id: rectangularGlowSource
+        id: rect
         color: "#cc4b00"
         anchors.centerIn: parent
         width: Math.round(parent.width / 1.5)
diff --git a/doc/src/snippets/RecursiveBlur-example.qml b/doc/src/snippets/RecursiveBlur-example.qml
index f667c1b..ebafb90 100644
--- a/doc/src/snippets/RecursiveBlur-example.qml
+++ b/doc/src/snippets/RecursiveBlur-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: recursiveBlurSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     RecursiveBlur {
-        anchors.fill: recursiveBlurSourceItem
-        source: recursiveBlurSourceItem
+        anchors.fill: bug
+        source: bug
         radius: 7.5
         loops: 50
     }
diff --git a/doc/src/snippets/ThresholdMask-example.qml b/doc/src/snippets/ThresholdMask-example.qml
index 2407218..a4d8577 100644
--- a/doc/src/snippets/ThresholdMask-example.qml
+++ b/doc/src/snippets/ThresholdMask-example.qml
@@ -53,7 +53,7 @@ Item {
     }
 
     Image {
-        id: thresholdMaskSourceItem
+        id: bug
         source: "images/bug.jpg"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -61,7 +61,7 @@ Item {
     }
 
     Image {
-        id: thresholdMaskItem
+        id: mask
         source: "images/fog.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -69,9 +69,9 @@ Item {
     }
 
     ThresholdMask {
-        anchors.fill: thresholdMaskSourceItem
-        source: thresholdMaskSourceItem
-        maskSource: thresholdMaskItem
+        anchors.fill: bug
+        source: bug
+        maskSource: mask
         threshold: 0.4
         spread: 0.2
     }
diff --git a/doc/src/snippets/ZoomBlur-example.qml b/doc/src/snippets/ZoomBlur-example.qml
index 70783e5..7f3daf0 100644
--- a/doc/src/snippets/ZoomBlur-example.qml
+++ b/doc/src/snippets/ZoomBlur-example.qml
@@ -47,7 +47,7 @@ Item {
     height: 300
 
     Image {
-        id: zoomBlurSourceItem
+        id: butterfly
         source: "images/butterfly.png"
         sourceSize: Qt.size(parent.width, parent.height)
         smooth: true
@@ -55,8 +55,8 @@ Item {
     }
 
     ZoomBlur {
-        anchors.fill: zoomBlurSourceItem
-        source: zoomBlurSourceItem
+        anchors.fill: butterfly
+        source: butterfly
         samples: 32
         length: 48
     }