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hello uni-app x
提交 650952e3 编写于 作者: 张 张磊 提交者： DCloud-yyl
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去除draw相关编译报warning的问题

上级 3808eef0
隐藏空白更改
内联 并排
Showing with 138 addition and 138 deletion
pages/API/element-draw/element-draw.uvue
浏览文件 @ 650952e3
...@@ -17,7 +17,7 @@ ...@@ -17,7 +17,7 @@
<!-- #endif --> <!-- #endif -->
</template> </template>
<script> <script lang="uts">
var y = 160 var y = 160
export default { export default {
data() { data() {
...@@ -57,68 +57,68 @@ ...@@ -57,68 +57,68 @@
}, },
methods: { methods: {
drawText() { drawText() {
let element = uni.getElementById('draw-text-view') let element = uni.getElementById('draw-text-view')!
let ctx = element!.getDrawableContext() let ctx = element.getDrawableContext()!
let width = element!.getBoundingClientRect().width let width = element.getBoundingClientRect().width
ctx!.reset() ctx.reset()
ctx!.font = "15px" ctx.font = "15px"
ctx!.textAlign = "center" ctx.textAlign = "center"
for (var i = 0; i < this.texts.length; i++) { for (var i = 0; i < this.texts.length; i++) {
let value = this.texts[i] let value = this.texts[i]
if (i % 2 == 0) { if (i % 2 == 0) {
ctx!.fillText(value, width / 2, (20 * (i + 1))) ctx.fillText(value, width / 2, (20 * (i + 1)))
} else { } else {
ctx!.strokeText(value, width / 2, (20 * (i + 1))) ctx.strokeText(value, width / 2, (20 * (i + 1)))
} }
} }
ctx!.update() ctx.update()
}, },
drawLines() { drawLines() {
let ctx = uni.getElementById('draw-line-view')!.getDrawableContext() let ctx = uni.getElementById('draw-line-view')!.getDrawableContext()!
ctx!.reset() ctx.reset()
ctx!.lineWidth = 10; ctx.lineWidth = 10;
["round", "bevel", "miter"].forEach((join, i) => { ["round", "bevel", "miter"].forEach((join, i) => {
ctx!.lineJoin = join; ctx.lineJoin = join;
ctx!.beginPath(); ctx.beginPath();
ctx!.moveTo(5, 10 + i * 40); ctx.moveTo(5, 10 + i * 40);
ctx!.lineTo(50, 50 + i * 40); ctx.lineTo(50, 50 + i * 40);
ctx!.lineTo(90, 10 + i * 40); ctx.lineTo(90, 10 + i * 40);
ctx!.lineTo(130, 50 + i * 40); ctx.lineTo(130, 50 + i * 40);
ctx!.lineTo(170, 10 + i * 40); ctx.lineTo(170, 10 + i * 40);
ctx!.stroke(); ctx.stroke();
}); });
ctx!.lineWidth = 1 ctx.lineWidth = 1
var space = 170 var space = 170
ctx!.strokeStyle = '#09f'; ctx.strokeStyle = '#09f';
ctx!.beginPath(); ctx.beginPath();
ctx!.moveTo(10 + space, 10); ctx.moveTo(10 + space, 10);
ctx!.lineTo(140 + space, 10); ctx.lineTo(140 + space, 10);
ctx!.moveTo(10 + space, 140); ctx.moveTo(10 + space, 140);
ctx!.lineTo(140 + space, 140); ctx.lineTo(140 + space, 140);
ctx!.stroke(); ctx.stroke();
// Draw lines // Draw lines
ctx!.strokeStyle = 'black'; ctx.strokeStyle = 'black';
['butt', 'round', 'square'].forEach((lineCap, i) => { ['butt', 'round', 'square'].forEach((lineCap, i) => {
ctx!.lineWidth = 15; ctx.lineWidth = 15;
ctx!.lineCap = lineCap; ctx.lineCap = lineCap;
ctx!.beginPath(); ctx.beginPath();
ctx!.moveTo(25 + space + i * 50, 10); ctx.moveTo(25 + space + i * 50, 10);
ctx!.lineTo(25 + space + i * 50, 140); ctx.lineTo(25 + space + i * 50, 140);
ctx!.stroke(); ctx.stroke();
}); });
ctx!.lineWidth = 1; ctx.lineWidth = 1;
this.drawDashedLine([], ctx!); this.drawDashedLine([], ctx);
this.drawDashedLine([2, 2], ctx!); this.drawDashedLine([2, 2], ctx);
this.drawDashedLine([10, 10], ctx!); this.drawDashedLine([10, 10], ctx);
this.drawDashedLine([20, 5], ctx!); this.drawDashedLine([20, 5], ctx);
this.drawDashedLine([15, 3, 3, 3], ctx!); this.drawDashedLine([15, 3, 3, 3], ctx);
this.drawDashedLine([20, 3, 3, 3, 3, 3, 3, 3], ctx!); this.drawDashedLine([20, 3, 3, 3, 3, 3, 3, 3], ctx);
ctx!.lineDashOffset = 18; ctx.lineDashOffset = 18;
this.drawDashedLine([12, 3, 3], ctx!); this.drawDashedLine([12, 3, 3], ctx);
ctx!.lineDashOffset = 0 ctx.lineDashOffset = 0
ctx!.setLineDash([0]) ctx.setLineDash([0])
ctx!.update() ctx.update()
}, },
drawDashedLine(pattern : Array<number>, ctx : DrawableContext) { drawDashedLine(pattern : Array<number>, ctx : DrawableContext) {
ctx.beginPath(); ctx.beginPath();
...@@ -129,12 +129,12 @@ ...@@ -129,12 +129,12 @@
y += 15; y += 15;
}, },
drawCircles() { drawCircles() {
let ctx = uni.getElementById('draw-circle-view')!.getDrawableContext() let ctx = uni.getElementById('draw-circle-view')!.getDrawableContext()!
ctx!.reset() ctx.reset()
// Draw shapes // Draw shapes
for (var i = 0; i < 4; i++) { for (var i = 0; i < 4; i++) {
for (var j = 0; j < 3; j++) { for (var j = 0; j < 3; j++) {
ctx!.beginPath(); ctx.beginPath();
var x = 25 + j * 50; // x coordinate var x = 25 + j * 50; // x coordinate
var y = 25 + i * 50; // y coordinate var y = 25 + i * 50; // y coordinate
var radius = 20; // Arc radius var radius = 20; // Arc radius
...@@ -142,22 +142,22 @@ ...@@ -142,22 +142,22 @@
var endAngle = Math.PI + (Math.PI * j) / 2; // End point on circle var endAngle = Math.PI + (Math.PI * j) / 2; // End point on circle
var clockwise = i % 2 == 0 ? false : true; // clockwise or anticlockwise var clockwise = i % 2 == 0 ? false : true; // clockwise or anticlockwise
ctx!.arc(x, y, radius, startAngle, endAngle, clockwise); ctx.arc(x, y, radius, startAngle, endAngle, clockwise);
if (i > 1) { if (i > 1) {
ctx!.fill(); ctx.fill();
} else { } else {
ctx!.stroke(); ctx.stroke();
} }
} }
} }
ctx!.update() ctx.update()
}, },
drawStar() { drawStar() {
let ctx = uni.getElementById('draw-dash-line')!.getDrawableContext() let ctx = uni.getElementById('draw-dash-line')!.getDrawableContext()!
ctx!.reset() ctx.reset()
ctx!.beginPath(); ctx.beginPath();
var horn = 5; // 画5个角 var horn = 5; // 画5个角
var angle = 360 / horn; // 五个角的度数 var angle = 360 / horn; // 五个角的度数
// 两个圆的半径 // 两个圆的半径
...@@ -169,45 +169,45 @@ ...@@ -169,45 +169,45 @@
for (var i = 0; i < horn; i++) { for (var i = 0; i < horn; i++) {
// 角度转弧度：角度/180*Math.PI // 角度转弧度：角度/180*Math.PI
// 外圆顶点坐标 // 外圆顶点坐标
ctx!.lineTo(Math.cos((18 + i * angle) / 180.0 * Math.PI) * R + x, -Math.sin((18 + i * angle) / 180.0 * Math.PI) * R + y); ctx.lineTo(Math.cos((18 + i * angle) / 180.0 * Math.PI) * R + x, -Math.sin((18 + i * angle) / 180.0 * Math.PI) * R + y);
// 內圆顶点坐标 // 內圆顶点坐标
ctx!.lineTo(Math.cos((54 + i * angle) / 180.0 * Math.PI) * r + x, -Math.sin((54 + i * angle) / 180.0 * Math.PI) * r + y); ctx.lineTo(Math.cos((54 + i * angle) / 180.0 * Math.PI) * r + x, -Math.sin((54 + i * angle) / 180.0 * Math.PI) * r + y);
} }
// closePath：关闭路径，将路径的终点与起点相连 // closePath：关闭路径，将路径的终点与起点相连
ctx!.closePath(); ctx.closePath();
ctx!.lineWidth = 3; ctx.lineWidth = 3;
ctx!.fillStyle = '#E4EF00'; ctx.fillStyle = '#E4EF00';
ctx!.strokeStyle = "red"; ctx.strokeStyle = "red";
ctx!.fill(); ctx.fill();
ctx!.stroke(); ctx.stroke();
ctx!.lineWidth = 10; ctx.lineWidth = 10;
ctx!.beginPath() ctx.beginPath()
ctx!.moveTo(170, 100) ctx.moveTo(170, 100)
ctx!.lineTo(255, 15) ctx.lineTo(255, 15)
ctx!.lineTo(340, 100) ctx.lineTo(340, 100)
ctx!.closePath() ctx.closePath()
ctx!.fill() ctx.fill()
ctx!.strokeStyle = "blue" ctx.strokeStyle = "blue"
ctx!.stroke() ctx.stroke()
ctx!.beginPath() ctx.beginPath()
ctx!.moveTo(170, 145) ctx.moveTo(170, 145)
ctx!.lineTo(255, 45) ctx.lineTo(255, 45)
ctx!.lineTo(340, 145) ctx.lineTo(340, 145)
ctx!.closePath() ctx.closePath()
ctx!.fill() ctx.fill()
ctx!.strokeStyle = "gray" ctx.strokeStyle = "gray"
ctx!.stroke() ctx.stroke()
// 未设置beginPath，导致上下表现一致，与前端一致 // 未设置beginPath，导致上下表现一致，与前端一致
ctx!.moveTo(170, 190) ctx.moveTo(170, 190)
ctx!.lineTo(255, 90) ctx.lineTo(255, 90)
ctx!.lineTo(340, 190) ctx.lineTo(340, 190)
ctx!.closePath() ctx.closePath()
ctx!.fillStyle = "orange" ctx.fillStyle = "orange"
ctx!.fill() ctx.fill()
ctx!.strokeStyle = "khaki" ctx.strokeStyle = "khaki"
ctx!.stroke() ctx.stroke()
ctx!.update() ctx.update()
}, },
hex(num : number) : string { hex(num : number) : string {
if (num == 0) { if (num == 0) {
...@@ -226,82 +226,82 @@ ...@@ -226,82 +226,82 @@
return result return result
}, },
drawhouse() { drawhouse() {
let ctx = uni.getElementById('draw-house')!.getDrawableContext() let ctx = uni.getElementById('draw-house')!.getDrawableContext()!
ctx!.reset() ctx.reset()
ctx!.lineWidth = 10; ctx.lineWidth = 10;
// Wall // Wall
ctx!.strokeRect(75, 140, 150, 110); ctx.strokeRect(75, 140, 150, 110);
// Door // Door
ctx!.fillRect(130, 190, 40, 60); ctx.fillRect(130, 190, 40, 60);
// Roof // Roof
ctx!.beginPath(); ctx.beginPath();
ctx!.moveTo(50, 140); ctx.moveTo(50, 140);
ctx!.lineTo(150, 60); ctx.lineTo(150, 60);
ctx!.lineTo(250, 140); ctx.lineTo(250, 140);
ctx!.closePath(); ctx.closePath();
ctx!.stroke(); ctx.stroke();
ctx!.update() ctx.update()
}, },
drawPoint() { drawPoint() {
let ctx = uni.getElementById('draw-style')!.getDrawableContext() let ctx = uni.getElementById('draw-style')!.getDrawableContext()!
ctx!.reset() ctx.reset()
for (let i = 0; i < 6; i++) { for (let i = 0; i < 6; i++) {
for (let j = 0; j < 6; j++) { for (let j = 0; j < 6; j++) {
ctx!.strokeStyle = `rgb(0,${Math.floor(255 - 42.5 * i)},${Math.floor(255 - 42.5 * j)})`; ctx.strokeStyle = `rgb(0,${Math.floor(255 - 42.5 * i)},${Math.floor(255 - 42.5 * j)})`;
ctx!.beginPath(); ctx.beginPath();
ctx!.arc(12.5 + j * 25, 12.5 + i * 25, 10, 0, Math.PI * 2, true); ctx.arc(12.5 + j * 25, 12.5 + i * 25, 10, 0, Math.PI * 2, true);
ctx!.stroke(); ctx.stroke();
} }
} }
for (let i = 0; i < 6; i++) { for (let i = 0; i < 6; i++) {
for (let j = 0; j < 6; j++) { for (let j = 0; j < 6; j++) {
ctx!.fillStyle = `rgb(${Math.floor(255 - 42.5 * i)},${Math.floor(255 - 42.5 * j)},0)`; ctx.fillStyle = `rgb(${Math.floor(255 - 42.5 * i)},${Math.floor(255 - 42.5 * j)},0)`;
ctx!.fillRect(180 + j * 25, i * 25, 25, 25); ctx.fillRect(180 + j * 25, i * 25, 25, 25);
} }
} }
ctx!.update() ctx.update()
}, },
drawRect() { drawRect() {
let ctx = uni.getElementById('draw-odd')!.getDrawableContext() let ctx = uni.getElementById('draw-odd')!.getDrawableContext()!
ctx!.reset() ctx.reset()
// Create path // Create path
ctx!.moveTo(30, 90); ctx.moveTo(30, 90);
ctx!.lineTo(110, 20); ctx.lineTo(110, 20);
ctx!.lineTo(240, 130); ctx.lineTo(240, 130);
ctx!.lineTo(60, 130); ctx.lineTo(60, 130);
ctx!.lineTo(190, 20); ctx.lineTo(190, 20);
ctx!.lineTo(270, 90); ctx.lineTo(270, 90);
ctx!.closePath(); ctx.closePath();
// Fill path // Fill path
ctx!.fillStyle = "green"; ctx.fillStyle = "green";
ctx!.fill("evenodd"); ctx.fill("evenodd");
ctx!.update() ctx.update()
}, },
drawArcTo() { drawArcTo() {
let ctx = uni.getElementById('draw-arcto')!.getDrawableContext() let ctx = uni.getElementById('draw-arcto')!.getDrawableContext()!
ctx!.reset() ctx.reset()
ctx!.beginPath(); ctx.beginPath();
ctx!.moveTo(50, 20); ctx.moveTo(50, 20);
ctx!.bezierCurveTo(230, 30, 150, 60, 50, 100); ctx.bezierCurveTo(230, 30, 150, 60, 50, 100);
ctx!.stroke(); ctx.stroke();
ctx!.fillStyle = "blue"; ctx.fillStyle = "blue";
// start point // start point
ctx!.fillRect(50, 20, 10, 10); ctx.fillRect(50, 20, 10, 10);
// end point // end point
ctx!.fillRect(50, 100, 10, 10); ctx.fillRect(50, 100, 10, 10);
ctx!.fillStyle = "red"; ctx.fillStyle = "red";
// control point one // control point one
ctx!.fillRect(230, 30, 10, 10); ctx.fillRect(230, 30, 10, 10);
// control point two // control point two
ctx!.fillRect(150, 70, 10, 10); ctx.fillRect(150, 70, 10, 10);
ctx!.update() ctx.update()
} }
} }
} }
......
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