半圓形進度條 vue加強版

="circle-progress"

>
半環形進度條demo
<
/h2>
"canvas" width=
"150" height=
"150"
>
<
/canvas>
="btns"
>
"tocanvas('canvas', '#ffbf00', 10)"
>
10<
/van-button>
"tocanvas('canvas', '#ffbf00', 20)"
>
20<
/van-button>
"tocanvas('canvas', '#ffbf00', 30)"
>
30<
/van-button>
"tocanvas('canvas', '#ffbf00', 40)"
>
40<
/van-button>
"tocanvas('canvas', '#ffbf00', 50)"
>
50<
/van-button>
<
/div>
="btns"
>
"tocanvas('canvas', '#ffbf00', 60)"
>
60<
/van-button>
"tocanvas('canvas', '#ffbf00', 70)"
>
70<
/van-button>
"tocanvas('canvas', '#ffbf00', 80)"
>
80<
/van-button>
"tocanvas('canvas', '#ffbf00', 90)"
>
90<
/van-button>
"tocanvas('canvas', '#ffbf00', 100)"
>
100<
/van-button>
<
/div>
<
/div>
<
/template>
export
default;}
,mounted()
,  methods:
,smallcircle2
(cx, cy, r)
,//畫圓
circle
(cx, cy, r)
,//畫弧線
sector
(cx, cy, r, startangle, endangle, anti)
,//重新整理
loading
(progress)
//清除canvas內容
this
.ctx.
clearrect(0
,0,this
.circlex *2,
this
.circley *2)
;//中間的字
this
.ctx.font =
"normal bold 40px april"
;this
.ctx.textalign =
"center"
;this
.ctx.textbaseline =
"middle"
;this
.ctx.fillstyle =
"#ffbf00"
;this
.ctx.
filltext
(parsefloat
(this
.process)
.tofixed(0
),this
.circlex,
this
.circley-5)
;this
.ctx.font =
"normal bold "
+this
.fontsize +
"px april"
;this
.ctx.fillstyle =
"#ffbf00";if
(progress <=20)
if(progress >
20&& progress <=30)
if(progress >
30&& progress <=50)
if(progress >
50&& progress <=60)
if(progress >
60&& progress <=70)
if(progress >
70&& progress <=80)
if(progress >
80&& progress <=90)
if(progress >
90&& progress <=
100)
//圓形
this
.circle
(this
.circlex,
this
.circley,
this
.radius)
;//圓弧
this
.sector
(this
.circlex,
this
.circley,
this
.radius,
(math.pi*
2)/3
,this
.process)
;//兩端圓點
this
.smallcircle1
(this
.cradius + math.
cos(((
2* math.pi)
/360)*
120)
*this
.radius,
this
.cradius + math.
sin(((
2* math.pi)
/360)*
120)
*this
.radius,0)
;this
.smallcircle2
(this
.cradius +
math.
cos(((
2* math.pi)
/360)*
(120
+this
.process *3)
)*this
.radius,
this
.cradius +
math.
sin(((
2* math.pi)
/360)*
(120
+this
.process *3)
)*this
.radius,2)
;//控制結束時動畫的速度if(
this
.process /
this
.percent >
0.9)
elseif(
this
.process /
this
.percent >
0.8)
elseif(
this
.process /
this
.percent >
0.7)
else},
/** 生成環形進度條 **/
tocanvas
(id, color, progress),20
);}if
(progress >=
50&& progress <70)
,10);
}if(progress >=70)
,6);
}}}}
;<
/script>
"less"
>
.circle-progress
.btns}}
<
/style>

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