extended_image 0.1.6 extended_image: ^0.1.6 copied to clipboard
extended official image with load state,crop,save,clip,paint etc.
extended_image #
extended official image with load state,crop,save,clip,paint etc.
extended image is the same as official image.
Cache network image #
You can use ExtendedNetworkImageProvider
ExtendedNetworkImageProvider(this.url,
{this.scale = 1.0,
this.headers,
this.cache: false,
this.retries = 3,
this.timeLimit,
this.timeRetry = const Duration(milliseconds: 100)})
: assert(url != null),
assert(scale != null);
///time Limit to request image
final Duration timeLimit;
///the time to retry to request
final int retries;
///the time duration to retry to request
final Duration timeRetry;
///whether cache image to local
final bool cache;
/// The URL from which the image will be fetched.
final String url;
/// The scale to place in the [ImageInfo] object of the image.
final double scale;
/// The HTTP headers that will be used with [HttpClient.get] to fetch image from network.
final Map<String, String> headers;
More: timeRetry/retries/timeLimit are used for request parameter
or just use with following code
ExtendedImage.network(
url,
width: ScreenUtil.instance.setWidth(400),
height: ScreenUtil.instance.setWidth(400),
fit: BoxFit.fill,
cache: true,
border: Border.all(color: Colors.red, width: 1.0),
shape: boxShape,
borderRadius: BorderRadius.all(Radius.circular(30.0)),
),
Circle/BorderRadius/Border #
Circle/BorderRadius/Border are easy to be used.
ExtendedImage.network(
url,
width: ScreenUtil.instance.setWidth(400),
height: ScreenUtil.instance.setWidth(400),
fit: BoxFit.fill,
cache: true,
border: Border.all(color: Colors.red, width: 1.0),
shape: boxShape,
borderRadius: BorderRadius.all(Radius.circular(30.0)),
),
Clear and Save #
Clear disk cached , you can set duration to clear expired images or clear all of them.
// Clear the disk cache directory then return if it succeed.
/// <param name="duration">timespan to compute whether file has expired or not</param>
Future<bool> clearDiskCachedImages({Duration duration})
///clear all of image in memory
clearMemoryImageCache();
/// get ImageCache
getMemoryImageCache() ;
saveNetworkImageToPhoto(String url, {bool useCache: true})
Custom load state #
/// custom load state widget if you want
final LoadStateChanged loadStateChanged;
provide LoadStateChanged function to build custom load widget, it's not just for network image, if your image need long to load, you can define your loading widget or crop your image at that moment. see custom image demo
ExtendedImage.network(
url,
width: ScreenUtil.instance.setWidth(600),
height: ScreenUtil.instance.setWidth(400),
fit: BoxFit.fill,
cache: true,
loadStateChanged: (ExtendedImageState state) {
switch (state.extendedImageLoadState) {
case LoadState.loading:
_controller.reset();
return Image.asset(
"assets/loading.gif",
fit: BoxFit.fill,
);
break;
case LoadState.completed:
_controller.forward();
return FadeTransition(
opacity: _controller,
child: ExtendedRawImage(
image: state.extendedImageInfo?.image,
width: ScreenUtil.instance.setWidth(600),
height: ScreenUtil.instance.setWidth(400),
),
);
break;
case LoadState.failed:
_controller.reset();
return GestureDetector(
child: Stack(
fit: StackFit.expand,
children: <Widget>[
Image.asset(
"assets/failed.jpg",
fit: BoxFit.fill,
),
Positioned(
bottom: 0.0,
left: 0.0,
right: 0.0,
child: Text(
"load image failed, click to reload",
textAlign: TextAlign.center,
),
)
],
),
onTap: () {
state.reLoadImage();
},
);
break;
}
},
)
Crop image #
you can crop image with ExtendedRawImage, soureRect is which you want to show image rect. crop image demo
ExtendedRawImage(
image: image,
width: num400,
height: num300,
fit: BoxFit.fill,
soucreRect: Rect.fromLTWH(
(image.width - width) / 2.0, 0.0, width, image.height.toDouble()),
)
paint any thing if you want when image is ready #
provide BeforePaintImage and AfterPaintImage, you will have the chance to paint thing you want. see paint image demo and push to refresh header which is used in crop image demo
ExtendedImage.network(
url,
width: ScreenUtil.instance.setWidth(400),
height: ScreenUtil.instance.setWidth(400),
fit: BoxFit.fill,
cache: true,
beforePaintImage: (Canvas canvas, Rect rect, ui.Image image) {
if (paintType == PaintType.ClipHeart) {
if (!rect.isEmpty) {
canvas.save();
canvas.clipPath(clipheart(rect, canvas));
}
}
return false;
},
afterPaintImage: (Canvas canvas, Rect rect, ui.Image image) {
if (paintType == PaintType.ClipHeart) {
if (!rect.isEmpty) canvas.restore();
} else if (paintType == PaintType.PaintHeart) {
canvas.drawPath(
clipheart(rect, canvas),
Paint()
..colorFilter = ColorFilter.mode(
Color(0x55ea5504), BlendMode.srcIn)
..isAntiAlias = false
..filterQuality = FilterQuality.low);
// canvas.drawImageRect(
// image,
// Rect.fromLTWH(0.0, y, imageWidth, imageHeight - y),
// Rect.fromLTWH(
// rect.left,
// rect.top + y / imageHeight * size.height,
// size.width,
// (imageHeight - y) / imageHeight * size.height),
// Paint()
// ..colorFilter = ColorFilter.mode(
// Color(0x22ea5504), BlendMode.srcIn)
// ..isAntiAlias = false
// ..filterQuality = FilterQuality.low);
}
},
)