# Convenience API
For operations on rectangles, a convenience API is provided which draws directly and does need a stroke or fill call.
import QtQuick
Canvas {
id: root
width: 120; height: 120
onPaint: {
var ctx = getContext("2d")
ctx.fillStyle = 'green'
ctx.strokeStyle = "blue"
ctx.lineWidth = 4
// draw a filles rectangle
ctx.fillRect(20, 20, 80, 80)
// cut our an inner rectangle
ctx.clearRect(30,30, 60, 60)
// stroke a border from top-left to
// inner center of the larger rectangle
ctx.strokeRect(20,20, 40, 40)
}
}
TIP
The stroke area extends half of the line width on both sides of the path. A 4 px lineWidth will draw 2 px outside the path and 2 px inside.
