canvas_13 绘制图像

<template>
    <view class="zcvs">

        <view class="zcvs-item">
            <view>Canvas_绘制图像</view>
            <view>
                <canvas canvas-id="cvs" id="cvs" style=" 400px; height: 400px;border: 1px solid #007AFF;" />
            </view>

        </view>

    </view>
</template>

<script>
    export default {
        data() {
            return {};
        },
        onReady() {
            this.drawCvs();
        },
        methods: {
            drawCvs() {
                const ctx = uni.createCanvasContext('cvs');
                // ctx.setStrokeStyle("#007AFF");
                // ctx.setLineWidth(5);

                let imgSrc = "../../static/pic1.png";
                // drawImage(dx, dy) 不缩放
                // drawImage(dx, dy, dWidth, dHeight) 控制缩放
                // drawImage(sx, sy, sWidth, sHeight, dx, dy, dWidth, dHeight) 控制缩放，裁剪
                ctx.drawImage(imgSrc, 0, 100, 400, 200);
                ctx.draw();
            },
        }
    }
</script>

<style lang="scss" scoped></style>