我使用的画布具有固定的宽度和高度。它的尺寸是500x500,我也想使用此方法将其保存为:
private async void SaveasGIF(object sender, RoutedEventArgs e)
{
var savePicker = new Windows.Storage.Pickers.FileSavePicker();
savePicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.PicturesLibrary;
savePicker.FileTypeChoices.Add("Gif with embedded ISF", new[] { ".gif" });
Windows.Storage.StorageFile file = await savePicker.PickSaveFileAsync();
if (null != file)
{
try
{
using (Windows.Storage.Streams.IRandomAccessStream stream = await file.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite))
{
// Truncate any existing stream in case the new file
// is smaller than the old file.
stream.Size = 0;
await MyInkCanvas.InkPresenter.StrokeContainer.SaveAsync(stream);
}
//MainPage.NotifyUser("File has been saved!", NotifyType.StatusMessage);
}
catch (Exception ex)
{
//MainPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
}
SaveGIF.IsChecked = false;
}
但是,当我这样做时,完成的.gif文件将被裁剪,并且具有421x643之类的尺寸。
我可以更改以解决此问题吗?
最佳答案
此代码await MyInkCanvas.InkPresenter.StrokeContainer.SaveAsync(stream);
用于将墨水笔划的集合保存到文件中。这与将InkCanvas
控件的内容渲染到图像中并不完全相同。如果笔划超出InkCanvas
,则生成的.gif尺寸将大于原始InkCanvas
的尺寸,反之亦然。
如果您的主要目标是将InkCanvas
的内容另存为图像(而不是稍后计划加载到InkCanvas
中的笔触),请使用Win2D as described here。
关于c# - 节省InkCanvas会产生错误的尺寸,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/47743885/