harmony 鸿蒙Blur Effect

  • 2023-10-30
  • 浏览 (449)

Blur Effect

Animation effects can add detail to your animations and create a sense of realism. For example, blur and shadow effects can lend a 3D look to objects and deliver a more engaging animation experience. ArkUI provides a diverse array of efficient APIs for you to develop exquisite and personalized effects. This topic covers the common blur, shadow, and color effects.

Blur effects add a sense of depth and allow for distinction of hierarchical relationship between elements.

API Description
backdropBlur Applies a background blur effect to the component. The input parameter is the blur radius.
blur Applies a foreground blur effect to the component. The input parameter is the blur radius.
backgroundBlurStyle Applies a background blur effect to the component. The input parameter is the blur style.
foregroundBlurStyle Applies a foreground blur effect to the component. The input parameter is the blur style.

Applying Background Blur with backdropBlur

@Entry
@Component
struct BlurEffectsExample {
  build() {
    Column({ space: 10 }) {
      Text('backdropblur')
        .width('90%')
        .height('90%')
        .fontSize(20)
        .fontColor(Color.White)
        .textAlign(TextAlign.Center)
        .backdropBlur(10) // Apply background blur.
        .backgroundImage($r('app.media.share'))
        .backgroundImageSize({ width: 400, height: 300 })
    }
    .width('100%')
    .height('50%')
    .margin({ top: 20 })
  }
}

en-us_image_0000001599812870

Applying Foreground Blur with blur

@Entry
@Component
struct Index1 {
  @State radius: number = 0;
  @State text: string = '';
  @State y: string = 'Finger not on the screen';

  aboutToAppear() {
    this.text = "Press a finger on the screen and slide up and down\n" + "Current finger position on the y-axis: " + this.y +
    "\n" + "Blur radius:" + this.radius;
  }

  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.SpaceBetween }) {
      Text(this.text)
        .height(200)
        .fontSize(20)
        .fontWeight(FontWeight.Bold)
        .fontFamily("cursive")
        .fontStyle(FontStyle.Italic)
      Image($r("app.media.wall"))
        .blur(this.radius) // Apply foreground blur.
        .height('100%')
        .width("100%")
        .objectFit(ImageFit.Cover)
    }.height('100%')
    .width("100%")
    .onTouch((event?: TouchEvent) => {
      if(event){
        if (event.type === TouchType.Move) {
          this.y = Number(event.touches[0].y.toString()).toString();
          this.radius = Number(this.y) / 10; // Modify the blur radius based on the sliding distance.
        }
        if (event.type === TouchType.Up) {
          this.radius = 0;
          this.y = 'Finger off the screen';
        }
      }
      this.text = "Press a finger on the screen and slide up and down\n" + "Current finger position on the y-axis: " + this.y +
      "\n" + "Blur radius:" + this.radius;
    })
  }
}

en-us_image_0000001599813588

Applying Background Blur with backgroundBlurStyle

@Entry
@Component
struct BackDropBlurStyleDemo {
  build() {
    Grid() {
      GridItem() {
        Column() {
          Column() {
            Text ('Original')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))

          Text ('Original')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('Thin')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          // BlurStyle.Thin: Thin blur is applied.
          // ThemeColorMode.LIGHT: The light color mode is used.
          // AdaptiveColor.DEFAULT: Adaptive color mode is not used. The default color is used as the mask color.
          // scale: blurredness of the background material. The default value is 1.
          .backgroundBlurStyle(BlurStyle.Thin, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('Thin')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('Regular')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .backgroundBlurStyle(BlurStyle.Regular, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('Regular')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('Thick')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .backgroundBlurStyle(BlurStyle.Thick, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('Thick')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_THIN')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .backgroundBlurStyle(BlurStyle.BACKGROUND_THIN, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_THIN')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_REGULAR')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .backgroundBlurStyle(BlurStyle.BACKGROUND_REGULAR, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_REGULAR')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_THICK')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .backgroundBlurStyle(BlurStyle.BACKGROUND_THICK, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_THICK')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_ULTRA_THICK')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .backgroundBlurStyle(BlurStyle.BACKGROUND_ULTRA_THICK, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_ULTRA_THICK')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)
    }
    .columnsTemplate('1fr 1fr')
    .rowsTemplate('1fr 1fr 1fr 1fr')
    .width('100%')
    .height('100%')
    .margin({ top: 40 })
  }
}

en-us_image_0000001649455517

Applying Foreground Blur with foregroundBlurStyle

@Entry
@Component
struct ForegroundBlurStyleDemo {
  build() {
    Grid() {
      GridItem() {
        Column() {
          Column() {
            Text ('Original')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))

          Text ('Original')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('Thin')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          // BlurStyle.Thin: Thin blur is applied.
          // ThemeColorMode.LIGHT: The light color mode is used.
          // AdaptiveColor.DEFAULT: Adaptive color mode is not used. The default color is used as the mask color.
          // scale: blurredness of the background material. The default value is 1.
          .foregroundBlurStyle(BlurStyle.Thin, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('Thin')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('Regular')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .foregroundBlurStyle(BlurStyle.Regular, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('Regular')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('Thick')
              .fontSize(20)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .foregroundBlurStyle(BlurStyle.Thick, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('Thick')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_THIN')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .foregroundBlurStyle(BlurStyle.BACKGROUND_THIN, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_THIN')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_REGULAR')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .foregroundBlurStyle(BlurStyle.BACKGROUND_REGULAR, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_REGULAR')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_THICK')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .foregroundBlurStyle(BlurStyle.BACKGROUND_THICK, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_THICK')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)

      GridItem() {
        Column() {
          Column() {
            Text('BACKGROUND_ULTRA_THICK')
              .fontSize(12)
              .fontColor(Color.White)
              .textAlign(TextAlign.Center)
              .width('100%')
              .height('100%')
          }
          .height(100)
          .aspectRatio(1)
          .borderRadius(10)
          .backgroundImage($r('app.media.share'))
          .foregroundBlurStyle(BlurStyle.BACKGROUND_ULTRA_THICK, {
            colorMode: ThemeColorMode.LIGHT,
            adaptiveColor: AdaptiveColor.DEFAULT,
            scale: 0.1
          })

          Text('BACKGROUND_ULTRA_THICK')
            .fontSize(12)
            .fontColor(Color.Black)
        }
        .height('100%')
        .justifyContent(FlexAlign.Start)
      }
      .width(200)
      .height(200)
    }
    .columnsTemplate('1fr 1fr')
    .rowsTemplate('1fr 1fr 1fr 1fr')
    .width('100%')
    .height('100%')
    .margin({ top: 40 })
  }
}

en-us_image_0000001599658168

你可能感兴趣的鸿蒙文章

harmony 鸿蒙UI Development

harmony 鸿蒙Animation Smoothing

harmony 鸿蒙Animation Overview

harmony 鸿蒙Property Animation APIs

harmony 鸿蒙Property Animation Overview

harmony 鸿蒙Color Effect

harmony 鸿蒙Button

harmony 鸿蒙Custom Dialog Box (CustomDialog)

harmony 鸿蒙Progress Indicator (Progress)

harmony 鸿蒙Radio Button (Radio)

0  赞
  • 所属分类： 后端技术
  • 本文标签：
  • 版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/98964eee2526467aadd8a70e17122929
热门推荐
标签云
Linux Java Spring Spring Boot docker 大数据 前端 生活 maven golang 软件 spring cloud fintech mac vscode 其他 区块链 以太坊 V神 开发者 技术 股票 git greenplum 分布式事务 chrome mysql flink kafka 设计模式 原理 鸿蒙 seo
最新文章
本文目录