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Diffstat (limited to 'examples/declarative/canvas/pixels/pixels.qml')
| -rw-r--r-- | examples/declarative/canvas/pixels/pixels.qml | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/examples/declarative/canvas/pixels/pixels.qml b/examples/declarative/canvas/pixels/pixels.qml new file mode 100644 index 0000000000..45f398dc5e --- /dev/null +++ b/examples/declarative/canvas/pixels/pixels.qml @@ -0,0 +1,43 @@ +import QtQuick 2.0 +import "../contents" +Item { + id:container + width:360 + height:600 + + Column { + spacing:5 + anchors.fill:parent + Text { font.pointSize:25; text:"Processing pixels"; anchors.horizontalCenter:parent.horizontalCenter} + + Canvas { + id:canvas + width:360 + height:360 + smooth:true + renderTarget:Canvas.Image + threadRendering:false + property string image :"../contents/qt-logo.png" + Component.onCompleted:loadImage(image); + onImageLoaded:requestPaint(); + onPaint: { + + var ctx = canvas.getContext('2d'); + if (canvas.isImageLoaded(image)) { + var pixels = ctx.createImageData(image); + //pixels.mirror(); + pixels.filter(Canvas.GrayScale); + //pixels.filter(Canvas.Threshold, 100); //default 127 + //pixels.filter(Canvas.Blur, 20); //default 10 + //pixels.filter(Canvas.Opaque); + //pixels.filter(Canvas.Invert); + //pixels.filter(Canvas.Convolute, [0,-1,0, + // -1,5,-1, + // 0,-1,0]); + //ctx.putImageData(pixels, 0, 0, canvas.width, canvas.height); + ctx.putImageData(pixels, 0, 0); + } + } + } + } +}
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