@felix.lsf/taro-cropper
Version:
Taro框架下的图片裁剪组件封装，开箱即用
70 lines • 2.25 kB
JavaScript
function compareVersion(v1, v2) {
v1 = v1.split('.');
v2 = v2.split('.');
const len = Math.max(v1.length, v2.length);
while (v1.length < len) {
v1.push('0');
}
while (v2.length < len) {
v2.push('0');
}
for (let i = 0; i < len; i++) {
const num1 = parseInt(v1[i]);
const num2 = parseInt(v2[i]);
if (num1 > num2) {
return 1;
}
else if (num1 < num2) {
return -1;
}
}
return 0;
}
function isWeapp() {
return process.env.TARO_ENV === 'weapp';
}
//////////////////////////////////////////////////////////////////////////////////
//////// 微信小程序自1.9.90起废除若干个CanvasContext的函数，改为属性，以下为兼容代码
//////////////////////////////////////////////////////////////////////////////////
function _easyCanvasContextBase(systemInfo, lowCallback, highCallback, targetVersion = "1.9.90") {
if (isWeapp() && compareVersion(systemInfo.SDKVersion, targetVersion) >= 0) {
highCallback();
}
else {
lowCallback();
}
}
/**
*
* 基础库 1.9.90 开始支持，低版本需做兼容处理。填充颜色。用法同 CanvasContext.setFillStyle()。
* @param systemInfo
* @param canvasContext
* @param color
*/
function easySetStrokeStyle(systemInfo, canvasContext, color) {
_easyCanvasContextBase(systemInfo, () => {
canvasContext.setStrokeStyle(color);
}, () => {
if (typeof color === "string") {
canvasContext.strokeStyle = color;
}
});
}
function easySetLineWidth(systemInfo, canvasContext, lineWidth) {
_easyCanvasContextBase(systemInfo, () => {
canvasContext.setLineWidth(lineWidth);
}, () => {
canvasContext.lineWidth = lineWidth;
});
}
function easySetFillStyle(systemInfo, canvasContext, color) {
_easyCanvasContextBase(systemInfo, () => {
canvasContext.setFillStyle(color);
}, () => {
if (typeof color === "string") {
canvasContext.fillStyle = color;
}
});
}
export { easySetStrokeStyle, easySetLineWidth, easySetFillStyle };
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