cyl/master
jscyl13849007907 6 days ago
parent 3bb3cebbb0
commit 3899b08975

File diff suppressed because it is too large Load Diff

@ -0,0 +1,91 @@
export default {
roundRect1 (ctx, x, y, w, h, r, color) {
//绘制圆角矩形(无填充色))
ctx.save();
ctx.fillStyle = color;
ctx.strokeStyle = color;
ctx.lineJoin = "round"; //交点设置成圆角
ctx.lineWidth = r;
ctx.strokeRect(x + r / 2, y + r / 2, w - r, h - r);
ctx.fillRect(x + r, y + r, w - r * 2, h - r * 2);
ctx.stroke();
ctx.closePath();
},
fillTextLineBreak (ctx, text, x, y, lw, lh, color = "#333", font = "32", weight = "500", align = "left") {
var i = 0;
var n = 0;
var r = -1;
// var initHeight = 0;
ctx.font = weight + " " + font + "px Arial"; //字体大小
ctx.fillStyle = color; //字体颜色
// ctx.textBaseline = align;
// ctx.textAlign = align;
while (i < text.length) {
while (ctx.measureText(text.substring(n, i)).width < lw && i < text.length) {
i++;
}
r++;
ctx.fillText(text.substring(n, i), x, y + lh * r);
n = i;
}
},
drawCenteredText (ctx, x, y, textSegments) {
// 计算总宽度
const totalWidth = this.calculateTotalWidth(ctx, textSegments);
// console.log('totalWidth', totalWidth, textSegments);
// 计算起始X坐标居中位置
const centerX = x;
const startX = (centerX - totalWidth) / 2;
const centerY = y;
// 绘制拼接文本
let currentX = startX;
textSegments.forEach((segment) => {
if (segment) {
ctx.font = `${segment.fontWeight} ${segment.fontSize}px Arial`;
ctx.fillStyle = segment.color;
// 文本基线设为中间,使垂直方向也居中
// ctx.textBaseline = "middle";
// 绘制当前文本片段
ctx.fillText(segment.content, currentX, centerY);
// 更新X坐标为下一段文本做准备, 文本长度为1的时候使用字体大小
currentX += ((ctx.measureText(segment.content).width) + (segment.space || 0));
}
});
},
roundRect_yuan (ctx, x, y, size, color) {
// 开始绘制
ctx.save(); // 保存
ctx.beginPath(); // 开始绘制
// ctx.arc(100, 75, 50, 0, 2 * Math.PI)
ctx.arc(size / 2 + x, size / 2 + y, size / 2, 0, Math.PI * 2, false);
ctx.fillStyle = color;
ctx.strokeStyle = color;
ctx.fill();
ctx.clip();
// 恢复之前保存的绘图上下文
ctx.restore();
},
/**
* 背景图绘制
*/
roundRect (ctx, img, bg_x, bg_y, bg_w, bg_h, bg_r) {
// 开始绘制
ctx.save();
ctx.beginPath();
ctx.arc(bg_x + bg_r, bg_y + bg_r, bg_r, Math.PI, Math.PI * 1.5);
ctx.arc(bg_x + bg_w - bg_r, bg_y + bg_r, bg_r, Math.PI * 1.5, Math.PI * 2);
ctx.arc(bg_x + bg_w - bg_r, bg_y + bg_h - bg_r, bg_r, 0, Math.PI * 0.5);
ctx.arc(bg_x + bg_r, bg_y + bg_h - bg_r, bg_r, Math.PI * 0.5, Math.PI);
ctx.clip();
ctx.drawImage(img, bg_x, bg_y, bg_w, bg_h);
// 恢复之前保存的绘图上下文
ctx.restore();
},
}
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