|
|
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} ${segment.fontSize}px Arial`;
|
|
|
ctx.fillStyle = segment.color;
|
|
|
|
|
|
// 文本基线设为中间，使垂直方向也居中
|
|
|
// ctx.textBaseline = "middle";
|
|
|
|
|
|
// 绘制当前文本片段
|
|
|
ctx.fillText(segment.content, currentX, centerY);
|
|
|
|
|
|
// 更新X坐标，为下一段文本做准备, 文本长度为1的时候，使用字体大小
|
|
|
currentX += ((ctx.measureText(segment.content).width) + (segment.space || 0));
|
|
|
}
|
|
|
|
|
|
});
|
|
|
},
|
|
|
roundRect_yuan (ctx, x, y, size, color) {
|
|
|
// 开始绘制
|
|
|
ctx.save(); // 保存
|
|
|
|
|
|
ctx.beginPath(); // 开始绘制
|
|
|
// ctx.arc(100, 75, 50, 0, 2 * Math.PI)
|
|
|
ctx.arc(size / 2 + x, size / 2 + y, size / 2, 0, Math.PI * 2, false);
|
|
|
ctx.fillStyle = color;
|
|
|
ctx.strokeStyle = color;
|
|
|
ctx.fill();
|
|
|
ctx.clip();
|
|
|
// 恢复之前保存的绘图上下文
|
|
|
ctx.restore();
|
|
|
},
|
|
|
/**
|
|
|
* 背景图绘制
|
|
|
*/
|
|
|
roundRect (ctx, img, bg_x, bg_y, bg_w, bg_h, bg_r) {
|
|
|
// 开始绘制
|
|
|
ctx.save();
|
|
|
ctx.beginPath();
|
|
|
ctx.arc(bg_x + bg_r, bg_y + bg_r, bg_r, Math.PI, Math.PI * 1.5);
|
|
|
ctx.arc(bg_x + bg_w - bg_r, bg_y + bg_r, bg_r, Math.PI * 1.5, Math.PI * 2);
|
|
|
ctx.arc(bg_x + bg_w - bg_r, bg_y + bg_h - bg_r, bg_r, 0, Math.PI * 0.5);
|
|
|
ctx.arc(bg_x + bg_r, bg_y + bg_h - bg_r, bg_r, Math.PI * 0.5, Math.PI);
|
|
|
ctx.clip();
|
|
|
ctx.drawImage(img, bg_x, bg_y, bg_w, bg_h);
|
|
|
// 恢复之前保存的绘图上下文
|
|
|
ctx.restore();
|
|
|
},
|
|
|
calculateTotalWidth (ctx, segments) {
|
|
|
let totalWidth = 0;
|
|
|
segments.forEach((segment) => {
|
|
|
// console.log('segment', segment);
|
|
|
if (segment) {
|
|
|
ctx.font = `${segment.fontWeight} ${segment.fontSize}px Arial`;
|
|
|
totalWidth += ((ctx.measureText(segment.content).width) + (segment.space || 0));
|
|
|
}
|
|
|
});
|
|
|
|
|
|
return totalWidth;
|
|
|
},
|
|
|
} |