Qt Quick Examples - Canvas▲
Canvas is a collection of small QML examples relating to the Canvas type. Each example is a small QML file emphasizing a particular type or feature.
Running the Example▲
To run the example from Qt Creator, open the Welcome mode and select the example from Examples. For more information, visit Building and Running an Example.
Red Heart▲
Red heart uses the bezier curve API to stroke and fill a red heart.
ctx.beginPath()
ctx.moveTo(75,40)
ctx.bezierCurveTo(75,37,70,25,50,25)
ctx.bezierCurveTo(20,25,20,62.5,20,62.5)
ctx.bezierCurveTo(20,80,40,102,75,120)
ctx.bezierCurveTo(110,102,130,80,130,62.5)
ctx.bezierCurveTo(130,62.5,130,25,100,25)
ctx.bezierCurveTo(85,25,75,37,75,40)
ctx.closePath()Talk Bubble▲
Talk bubble uses the quadraticCurveTo() API to stroke and fill a customized talk bubble:
ctx.beginPath()
ctx.moveTo(75, 25)
ctx.quadraticCurveTo(25, 25, 25, 62.5)
ctx.quadraticCurveTo(25, 100, 50, 100)
ctx.quadraticCurveTo(50, 120, 30, 125)
ctx.quadraticCurveTo(60, 120, 65, 100)
ctx.quadraticCurveTo(125, 100, 125, 62.5)
ctx.quadraticCurveTo(125, 25, 75, 25)
ctx.closePath()This example also demonstrates the fillText() API:
ctx.fillStyle = "white"
ctx.font = "bold 17px sans-serif"
ctx.fillText("Qt Quick", 40, 70)Squircle▲
Squircle uses a collection of simple moveTo() and lineTo() path APIs to draw a smooth squircle.
Rounded Rectangle▲
Rounded rectangle uses a collection of lineTo() and arcTo() path APIs to draw a rounded rectangle.
Smile Face▲
Smile face uses several paths to draw and fill a smiling face.
Clip▲
Clip uses the clip API to clip a given image.
ctx.clip()
ctx.drawImage(canvas.imagefile, 0, 0)Tiger▲
Tiger uses the SVG path API to draw a tiger with a collection of SVG path strings.
for (let i = 0; i < Tiger.tiger.length; i++) {
if (Tiger.tiger[i].width !== undefined)
ctx.lineWidth = Tiger.tiger[i].width
if (Tiger.tiger[i].path !== undefined)
ctx.path = Tiger.tiger[i].path
if (Tiger.tiger[i].fill !== undefined) {
ctx.fillStyle = Tiger.tiger[i].fill
ctx.fill()
}
if (Tiger.tiger[i].stroke !== undefined) {
ctx.strokeStyle = Tiger.tiger[i].stroke
ctx.stroke()
}
}