本文介绍了如何在 qml canvas 元素中创建弯曲文本?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
限时送ChatGPT账号..我想在 qml 中创建一个弯曲的文本,这可能吗?有我可以导入的 javascript 库吗?
i want to create a curved text in qml it's possible? Is there a javascript library that i can import to do it?
我的想法是可能使用 canvas 元素,但我不知道我该怎么做...这是个好主意??
My idea is that it's possible maybe with canvas element but i don't know how i can do it... it's a good idea??
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Canvas{
anchors.fill: parent
onPaint: {
var ctx = getContext("2d");
ctx.fillStyle = Qt.rgba(1, 0, 0, 1);
ctx.fillRect(0, 0, width, height);
//how i can create curved text???
}
}
}
推荐答案
您好,我尝试将代码插入@folibis 发布的链接中,完美运行!!!这是代码:
Hello I tried the code into the link posted by @folibis , work perfectly!!! This is the code :
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Canvas{
property string nameFont: webFont.name
function drawTextAlongArc(context, str, centerX, centerY, radius, angle)
{
context.save();
context.translate(centerX, centerY);
context.rotate(-1 * angle / 2);
context.rotate(-1 * (angle / str.length) / 2);
for (var n = 0; n < str.length; n++) {
context.rotate(angle / str.length);
context.save();
context.translate(0, -1 * radius);
var char1 = str[n];
context.fillText(char1, 0, 0);
context.restore();
}
context.restore();
}
anchors.fill: parent
onPaint: {
var ctx = getContext("2d");
ctx.fillStyle = Qt.rgba(1, 1, 1, 1);
ctx.fillRect(0, 0, width, height);
ctx.font='50px Verdana'
//ctx.font = '30px Courier New'
ctx.textAlign = "center";
var centerX = width / 2;
var centerY = height/2; //height - 30;
var angle = Math.PI * 0.8; // radians
var radius = 180;
ctx.fillStyle="#000000"
drawTextAlongArc(ctx, "Hello World", centerX, centerY, radius, angle);
}
}
}
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