round_corners_image_provider

Creator: coderz1093

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Description:

round corners image provider

round_corners_image_provider #
一个ImageProvider封装,用于生成圆角图片。分别继承ExactAssetImage、AssetImage、FileImage、MemoryImage、NetworkImage和CachedNetworkImageProvider实现了圆角ImageProvider。
CachedNetworkImageProvider为cached_network_image包提供的ImageProvider
用法 #
Image(
image: RoundCornersImageProvider.asset(
'assets/icon_round_corners.png',
cornerRadius: 30,
imageShowSize: Size(60, 60),
cornerColor: Colors.yellow
),
width: 60,
height: 60,
),
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相对与原有ImageProvider增加的属性及其作用 #
///圆角,如果imageShowSize不为空,则通过计算使得以imageShowSize显示出来的图片圆角为cornerRadius,
///如果imageShowSize为空,而cacheImageWidth或者cacheImageHeight不为空,则将resize之后的图片圆角设置为cornerRadius
///如果imageShowSize、cacheImageWidth、cacheImageHeight都为空,则将原图圆角设置为cornerRadius
final int cornerRadius;
//cornerRadius圆角外围部分的颜色,则被裁剪掉部分颜色
final Color cornerColor;
//ImageCache缓存图片的宽高设置
final int cacheImageWidth;
final int cacheImageHeight;

//imageShowSize设置后裁取的位置
//如果设置ClipLocation.Start,则当原始图片过长的时候从头部(上或左)截取宽高比为imageShowSize框高比的图片。
final ClipLocation clipLocation;

//图片显示的大小。如果设置了图片显示宽高,会按图片显示宽高比截取原图。圆角也会匹配imageShowSize
final Size imageShowSize;
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效果 #
由以下对比图可知,cpu和gpu新能都有一定提高
以下截图gpu和cpu数据为不断刷新页面得到的截图。
用ClipRRect显示圆角效果

使用RoundCornersImageProvider.asset生成圆角图片效果

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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