void SegmentValueChanged(object sender, EventArgs e)
{
if (_viewSegment.SelectedSegment == 0)
{
if (_previewView != null)
{
_previewView.RemoveFromSuperview();
_previewView.Dispose();
_previewView = null;
}
Add(TextView);
TextView.BecomeFirstResponder();
}
else
{
if (_previewView == null)
{
_previewView = new WKWebView(this.View.Bounds, new WKWebViewConfiguration());
}
TextView.RemoveFromSuperview();
Add(_previewView);
var markdownService = Mvx.Resolve <IMarkdownService>();
var markdownText = markdownService.Convert(Text);
var model = new DescriptionModel(markdownText, (int)UIFont.PreferredSubheadline.PointSize);
var view = new MarkdownView {
Model = model
}.GenerateString();
_previewView.LoadHtmlString(view, NSBundle.MainBundle.BundleUrl);
}
}
void SegmentValueChanged()
{
if (_viewSegment.SelectedSegment == 0)
{
if (_previewView != null)
{
_previewView.RemoveFromSuperview();
_previewView.Dispose();
_previewView = null;
}
Add(TextView);
TextView.BecomeFirstResponder();
}
else
{
if (_previewView == null)
{
_previewView = new WKWebView(this.View.Bounds, new WKWebViewConfiguration());
}
TextView.RemoveFromSuperview();
Add(_previewView);
LoadPreview(_previewView).ToBackground();
}
}
public override void ViewDidUnload()
{
if (webView != null)
{
webView.Dispose();
}
base.ViewDidUnload();
}
async Task NavigationComplete(WKWebView webView, string filename, PageSize pageSize, PageMargin margin, TaskCompletionSource <ToFileResult> taskCompletionSource)
{
try
{
var widthString = await webView.EvaluateJavaScriptAsync("document.documentElement.offsetWidth");
var width = double.Parse(widthString.ToString());
var heightString = await webView.EvaluateJavaScriptAsync("document.documentElement.offsetHeight");
var height = double.Parse(heightString.ToString());
if (width < 1 || height < 1)
{
taskCompletionSource.SetResult(new ToFileResult(true, "WebView has zero width or height"));
return;
}
webView.ClipsToBounds = false;
webView.ScrollView.ClipsToBounds = false;
var bounds = webView.Bounds;
webView.Bounds = new CGRect(0, 0, (nfloat)width, (nfloat)height);
var scale = pageSize.Width / width;
var snapshotConfig = new WKSnapshotConfiguration
{
SnapshotWidth = pageSize.Width / Display.Scale
};
var image = await webView.TakeSnapshotAsync(snapshotConfig);
if (image.AsPNG() is NSData data)
{
var path = Path.Combine(ToPngService.FolderPath(), filename + ".png");
File.WriteAllBytes(path, data.ToArray());
taskCompletionSource.SetResult(new ToFileResult(false, path));
return;
}
webView.Bounds = bounds;
taskCompletionSource.SetResult(new ToFileResult(true, "No data returned."));
}
catch (Exception e)
{
taskCompletionSource.SetResult(new ToFileResult(true, "Exception: " + e.Message + (e.InnerException != null
? "Inner exception: " + e.InnerException.Message
: null)));
}
finally
{
webView.Dispose();
}
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (disposing)
{
if (_wkWebView != null)
{
_wkWebView.Dispose();
_wkWebView = null;
}
}
}
/*
* public void ToPdf(TaskCompletionSource<ToFileResult> taskCompletionSource, WebView xfWebView, string fileName)
* {
* if (xfWebView.Effects.Any(e=>e is Forms9Patch.WebViewPrintEffect))
* {
*
* }
* }
*/
async Task NavigationComplete(WKWebView webView, string filename, PageSize pageSize, PageMargin margin, TaskCompletionSource <ToFileResult> taskCompletionSource)
{
try
{
var widthString = await webView.EvaluateJavaScriptAsync("document.documentElement.offsetWidth");
var width = double.Parse(widthString.ToString());
var heightString = await webView.EvaluateJavaScriptAsync("document.documentElement.offsetHeight");
var height = double.Parse(heightString.ToString());
if (width < 1 || height < 1)
{
taskCompletionSource.SetResult(new ToFileResult(true, "WebView has zero width or height"));
return;
}
webView.ClipsToBounds = false;
webView.ScrollView.ClipsToBounds = false;
if (webView.CreatePdfFile(webView.ViewPrintFormatter, pageSize, margin) is NSMutableData data)
{
var path = System.IO.Path.Combine(ToPngService.FolderPath(), filename + ".pdf");
System.IO.File.WriteAllBytes(path, data.ToArray());
taskCompletionSource.SetResult(new ToFileResult(false, path));
data.Dispose();
return;
}
taskCompletionSource.SetResult(new ToFileResult(true, "No data returned."));
}
catch (Exception e)
{
taskCompletionSource.SetResult(new ToFileResult(true, "Exception: " + e.Message + (e.InnerException != null
? "Inner exception: " + e.InnerException.Message
: null)));
}
finally
{
webView.Dispose();
}
}