xref: /OK3568_Linux_fs/app/forlinx/flapp/src/plugins/imxwayland/qmlvideofx/qml/qmlvideofx/EffectMagnify.qml (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
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33
34import QtQuick 2.1
35import QtQuick.Window 2.1
36
37Effect {
38    id: root
39    divider: false
40    parameters: ListModel {
41        ListElement {
42            name: "Radius"
43            value: 0.5
44        }
45        ListElement {
46            name: "Diffraction"
47            value: 0.5
48        }
49        onDataChanged: updateParameters()
50    }
51
52    function updateParameters()
53    {
54        radius   = parameters.get(0).value * 100;
55        diffractionIndex = parameters.get(1).value;
56    }
57
58    property real posX: -1
59    property real posY: -1
60    property real pixDens: Screen.pixelDensity
61
62    QtObject {
63        id: d
64        property real oldTargetWidth: root.targetWidth
65        property real oldTargetHeight: root.targetHeight
66    }
67
68    // Transform slider values, and bind result to shader uniforms
69    property real radius: 0.5 * 100
70    property real diffractionIndex: 0.5
71
72    onTargetWidthChanged: {
73        if (posX == -1)
74            posX = targetWidth / 2
75        else if (d.oldTargetWidth != 0)
76            posX *= (targetWidth / d.oldTargetWidth)
77        d.oldTargetWidth = targetWidth
78    }
79
80    onTargetHeightChanged: {
81        if (posY == -1)
82            posY = targetHeight / 2
83        else if (d.oldTargetHeight != 0)
84            posY *= (targetHeight / d.oldTargetHeight)
85        d.oldTargetHeight = targetHeight
86    }
87
88    fragmentShaderFilename: "magnify.fsh"
89
90    MouseArea {
91        anchors.fill: parent
92        onPositionChanged: { root.posX = mouse.x; root.posY = root.targetHeight - mouse.y }
93    }
94}
95