diff --git a/pages/component/canvas/canvas.test.js b/pages/component/canvas/canvas.test.js
index 5a94c79a0945aa7b9005b86e22496240e3ac6421..5d489959d1bc8054a8b843f879451ba642b4fc87 100644
--- a/pages/component/canvas/canvas.test.js
+++ b/pages/component/canvas/canvas.test.js
@@ -40,10 +40,22 @@ describe('Canvas.uvue', () => {
expect(await element.text()).toBe('true')
})
// 配合安卓注释
- // it('测试 createImage', async () => {
- // await page.callMethod('onCreateImage');
- // await page.waitFor(500) // 加载图片
- // const element = await page.$('#testCreateImage')
- // expect(await element.text()).toBe('true')
- // })
+ it('测试 createImage', async () => {
+ if (process.env.uniTestPlatformInfo.toLowerCase().startsWith('web')) {
+ // web skip
+ expect(true).toBe(true)
+ } else {
+ await page.callMethod('onCreateImage');
+ await page.waitFor(500) // 加载图片
+ const element = await page.$('#testCreateImage')
+ expect(await element.text()).toBe('true')
+ }
+ })
+ it('测试 testCreatePath2D', async () => {
+ // onCreatePath2D
+ await page.callMethod('onCreatePath2D');
+ await page.waitFor(50)
+ const element = await page.$('#testCreatePath2D')
+ expect(await element.text()).toBe('true')
+ })
})
diff --git a/pages/component/canvas/canvas.uvue b/pages/component/canvas/canvas.uvue
index fb73ed2c7c49d2d529367befb26f5aa60335aae4..61304187755387ec44afdc3999ed9338550faf4a 100644
--- a/pages/component/canvas/canvas.uvue
+++ b/pages/component/canvas/canvas.uvue
@@ -20,6 +20,11 @@
{{testCreateImage}}
+
+ 测试 createPath2D 结果:
+ {{testCreatePath2D}}
+
+
@@ -32,6 +37,7 @@
{{dataBase64.slice(0,22)}}...
+
CanvasContext API 演示
@@ -75,7 +81,8 @@
names: [...API_PATH, ...API_DRAW, ...API_STATE, ...API_PROPERTIES, "measureText", "path2D"].sort() as string[],
// 仅测试
testCreateCanvasContextAsyncSuccess: false,
- testCreateImage: false
+ testCreateImage: false,
+ testCreatePath2D: false
}
},
onReady() {
@@ -122,13 +129,35 @@
canvasToDataURL() {
this.dataBase64 = this.canvasContext!.toDataURL()
},
- onCreateImage() {
- // let image = this.canvasContext!.createImage();
- // image.src = "../../static/logo.png"
- // image.onload = () => {
- // this.testCreateImage = true
- // this.renderingContext?.drawImage(image, 0, 0, 100, 100);
- // }
+ onCreateImage() {
+ this.renderingContext!.clearRect(0, 0, this.canvasWidth, this.canvasHeight)
+ let image = this.canvasContext!.createImage();
+ image.src = "../../static/logo.png"
+ image.onload = () => {
+ this.testCreateImage = true
+ this.renderingContext?.drawImage(image, 0, 0, 100, 100);
+ }
+ },
+ onCreatePath2D() {
+ this.renderingContext!.clearRect(0, 0, this.canvasWidth, this.canvasHeight)
+ const context = this.renderingContext!
+ let path2D = this.canvasContext!.createPath2D()
+ this.testCreatePath2D = true
+ const amplitude = 64;
+ const wavelength = 64;
+ for (let i = 0; i < 5; i++) {
+ const x1 = 0 + (i * wavelength);
+ const y1 = 128;
+ const x2 = x1 + wavelength / 4;
+ const y2 = y1 - amplitude;
+ const x3 = x1 + 3 * wavelength / 4;
+ const y3 = y1 + amplitude;
+ const x4 = x1 + wavelength;
+ const y4 = y1;
+ context.moveTo(x1, y1);
+ path2D.bezierCurveTo(x2, y2, x3, y3, x4, y4);
+ }
+ context.stroke(path2D);
},
handleCanvasButton(name : string) {
this.renderingContext!.clearRect(0, 0, this.canvasWidth, this.canvasHeight)
@@ -258,10 +287,10 @@
this.setMiterLimit();
break;
case "textAlign":
- this.textAlign();
- break;
- case "path2D":
- this.path2DMethods();
+ this.textAlign();
+ break;
+ case "path2D":
+ this.path2DMethods();
break;
default:
break;
@@ -849,31 +878,31 @@
const textMetrics = context.measureText(text)
context.strokeText(text, 40, 100)
context.fillText("measure text width:" + textMetrics.width, 40, 80)
- },
+ },
path2DMethods() {
- const context = this.renderingContext!
-
- context.beginPath()
- const path2D = new Path2D();
- const amplitude = 64;
- const wavelength = 64;
- for (let i = 0; i < 5; i++) {
- const x1 = 0 + (i * wavelength);
- const y1 = 128;
- const x2 = x1 + wavelength / 4;
- const y2 = y1 - amplitude;
- const x3 = x1 + 3 * wavelength / 4;
- const y3 = y1 + amplitude;
- const x4 = x1 + wavelength;
- const y4 = y1;
- context.moveTo(x1, y1);
- path2D.bezierCurveTo(x2, y2, x3, y3, x4, y4);
- }
- context.stroke(path2D);
-
- const path2DRect = new Path2D();
- path2DRect.rect(10, 10, 100, 20);
- context.fill(path2DRect);
+ const context = this.renderingContext!
+
+ context.beginPath()
+ const path2D = new Path2D();
+ const amplitude = 64;
+ const wavelength = 64;
+ for (let i = 0; i < 5; i++) {
+ const x1 = 0 + (i * wavelength);
+ const y1 = 128;
+ const x2 = x1 + wavelength / 4;
+ const y2 = y1 - amplitude;
+ const x3 = x1 + 3 * wavelength / 4;
+ const y3 = y1 + amplitude;
+ const x4 = x1 + wavelength;
+ const y4 = y1;
+ context.moveTo(x1, y1);
+ path2D.bezierCurveTo(x2, y2, x3, y3, x4, y4);
+ }
+ context.stroke(path2D);
+
+ const path2DRect = new Path2D();
+ path2DRect.rect(10, 10, 100, 20);
+ context.fill(path2DRect);
}
}
}