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C# RandomStream.Seek方法代码示例

本文整理汇总了C#中RandomStream.Seek方法的典型用法代码示例。如果您正苦于以下问题:C# RandomStream.Seek方法的具体用法?C# RandomStream.Seek怎么用?C# RandomStream.Seek使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在RandomStream的用法示例。


在下文中一共展示了RandomStream.Seek方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: ToBitmapImageAsync

        public async static Task<WriteableBitmap> ToBitmapImageAsync(this Stream imageStream, Tuple<int, int> downscale, bool useDipUnits, InterpolationMode mode, ImageInformation imageInformation = null)
        {
            if (imageStream == null)
                return null;

            using (IRandomAccessStream image = new RandomStream(imageStream))
            {
                if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
                {
                    using (var downscaledImage = await image.ResizeImage(downscale.Item1, downscale.Item2, mode, useDipUnits, imageInformation).ConfigureAwait(false))
                    {
                        BitmapDecoder decoder = await BitmapDecoder.CreateAsync(downscaledImage);
                        downscaledImage.Seek(0);
                        WriteableBitmap resizedBitmap = null;

                        await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
                        {
                            resizedBitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
                            using (var s = downscaledImage.AsStream())
                            {
                                resizedBitmap.SetSource(s);
                            }
                        });

                        return resizedBitmap;
                    }
                }
                else
                {
                    BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
                    image.Seek(0);
                    WriteableBitmap bitmap = null;

                    if (imageInformation != null)
                    {
                        imageInformation.SetCurrentSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
                        imageInformation.SetOriginalSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
                    }

                    await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
                    {
                        bitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
                        bitmap.SetSource(imageStream);
                    });

                    return bitmap;
                }
            }
        }
开发者ID:CaLxCyMru,项目名称:FFImageLoading,代码行数:49,代码来源:ImageExtensions.cs

示例2: ToBitmapImageAsync

        public async static Task<WriteableBitmap> ToBitmapImageAsync(this byte[] imageBytes, Tuple<int, int> downscale, InterpolationMode mode)
        {
            if (imageBytes == null)
                return null;

            using (var imageStream = imageBytes.AsBuffer().AsStream())
            using (IRandomAccessStream image = new RandomStream(imageStream))
            {
                if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
                {
                    using (var downscaledImage = await image.ResizeImage((uint)downscale.Item1, (uint)downscale.Item2, mode).ConfigureAwait(false))
                    {
                        BitmapDecoder decoder = await BitmapDecoder.CreateAsync(downscaledImage);
                        downscaledImage.Seek(0);
                        WriteableBitmap resizedBitmap = null;

                        await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
                        {
                            resizedBitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
                            using (var s = downscaledImage.AsStream())
                            {
                                resizedBitmap.SetSource(s);
                            }
                        });

                        return resizedBitmap;
                    }
                }
                else
                {
                    BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
                    image.Seek(0);
                    WriteableBitmap bitmap = null;

                    await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
                    {
                        bitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
                        bitmap.SetSource(imageStream);
                    });

                    return bitmap;
                }
            }
        }
开发者ID:martb1n,项目名称:FFImageLoading,代码行数:44,代码来源:ImageExtensions.cs


注:本文中的RandomStream.Seek方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。