public static async Task <NGraphics.IImage> ToIImage(this FileImageSource src)
{
var handler = new FileImageSourceHandler();
var bitmap = await handler.LoadImageAsync(src, Forms.Context);
return(new NGraphics.BitmapImage(bitmap));
}
protected virtual async Task <UIImage> GetImage(ImageSource imageSource)
{
if (imageSource == null)
{
return(null);
}
UIImage image = null;
try
{
var handler = new FileImageSourceHandler();
image = await handler.LoadImageAsync(imageSource);
}
catch
{
// ignored
}
if (Element == null)
{
image?.Dispose();
return(null);
}
return(image);
}
/// <summary>
/// Called when [element changed].
/// </summary>
/// <param name="e">The e.</param>
protected override void OnElementChanged(ElementChangedEventArgs <Image> e)
{
base.OnElementChanged(e);
var targetImageView = this.Control;
Bitmap image = null;
var networkStatus = Reachability.InternetConnectionStatus();
var isReachable = networkStatus != NetworkStatus.NotReachable;
if (isReachable && !string.IsNullOrEmpty(WebImage.ImageUrl))
{
image = GetImageFromWeb(WebImage.ImageUrl);
}
else
{
if (!string.IsNullOrEmpty(WebImage.DefaultImage))
{
var handler = new FileImageSourceHandler();
image = handler.LoadImageAsync(ImageSource.FromFile(WebImage.DefaultImage), this.Context).Result;
}
}
targetImageView.SetImageBitmap(image);
}
protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (e.NewElement is iOSSearchPage iosSearchPage)
{
this.searchController.SearchBar.Placeholder = iosSearchPage.SearchPlaceholder;
Task.Run(async() =>
{
if (iosSearchPage.ActionImage != null)
{
try
{
var handler = new FileImageSourceHandler();
var actionImage = await handler.LoadImageAsync(iosSearchPage.ActionImage);
this.searchController.SearchBar.SetImageforSearchBarIcon(actionImage, UISearchBarIcon.Bookmark, UIControlState.Normal);
this.searchController.SearchBar.ShowsBookmarkButton = true;
}
catch (Exception ex)
{
Debug.WriteLine($"Error loading ActionImage: {ex.Message}");
}
}
});
}
}
public static async Task <NGraphics.IImage> ToIImage(this FileImageSource src)
{
var handler = new FileImageSourceHandler();
var image = await handler.LoadImageAsync(src);
return(new NGraphics.CGImageImage(image.CGImage, 1));
}
protected virtual async Task <Bitmap> GetBitmap(ImageSource imageSource)
{
if (imageSource == null)
{
return(null);
}
Bitmap bitmap = null;
try
{
var handler = new FileImageSourceHandler();
bitmap = await handler.LoadImageAsync(imageSource, Context);
}
catch
{
// ignored
}
if (Element == null)
{
bitmap?.Dispose();
return(null);
}
return(bitmap);
}
public MGLAnnotationImage MapView_ImageForAnnotation(MGLMapView mapView, IMGLAnnotation annotation)
{
var fannotation = Element.Annotations.FirstOrDefault(x => x.NativeHandle == annotation.Handle);
switch (fannotation)
{
case SymbolAnnotation symbol:
switch (symbol.IconImage.Source)
{
case FileImageSource fileImageSource:
var cachedImage = mapView.DequeueReusableAnnotationImageWithIdentifier(fileImageSource.File);
if (cachedImage != null) return cachedImage;
var fileImageSourceHandler = new FileImageSourceHandler();
var image = fileImageSourceHandler.LoadImageAsync(fileImageSource).Result;
if (image == null) return null;
return MGLAnnotationImage.AnnotationImageWithImage(image, fileImageSource.File);
}
break;
}
return null;
}
public async Task <IImage> GetImage(FileImageSource file, CancellationToken token)
{
var handler = new FileImageSourceHandler();
var bitmap = await handler.LoadImageAsync(file, Forms.Context, token);
if (bitmap == null)
{
return(null);
}
var image = new BitmapImage(bitmap, _scale);
return(image);
}
public async Task <IImage> GetImage(FileImageSource file, CancellationToken token)
{
var handler = new FileImageSourceHandler();
var nativeImage = await handler.LoadImageAsync(file, token);
if (nativeImage == null)
{
return(null);
}
var image = new CGImageImage(nativeImage.CGImage, _scale);
return(image);
}
public async static Task <SKBitmap> BitmapFromNativeFile(string fileName)
{
var imageSource = ImageSource.FromFile(fileName);
IImageSourceHandler imageLoader = new FileImageSourceHandler();
#if __ANDROID__
if (context == null)
{
throw new Exception("ImageLoader not initialized.");
}
Bitmap image = await imageLoader.LoadImageAsync(imageSource, context);
return(image.ToSKBitmap());
#else
UIImage image = await imageLoader.LoadImageAsync(imageSource);
return(image.ToSKBitmap());
//fix the problem of drawing abnormal pixels
//CGImage cgImage = image.CGImage;
//var info = new SKImageInfo((int)cgImage.Width, (int)cgImage.Height);
//var bitmap = new SKBitmap(info);
//using (var pixmap = bitmap.PeekPixels())
//using (var colorSpace = CGColorSpace.CreateDeviceRGB())
//using (var context = new CGBitmapContext(pixmap.GetPixels(), pixmap.Width, pixmap.Height, 8, pixmap.RowBytes, colorSpace, CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big))
//{
// CheckBytes(bitmap.Bytes);
// CGRect rect = new CGRect(0, 0, cgImage.Width, cgImage.Height);
// context.ClearRect(rect);
// CheckBytes(bitmap.Bytes);
// context.DrawImage(rect, cgImage);
// CheckBytes(bitmap.Bytes);
//}
//return bitmap;
#endif
}
async void IPicture.SavePictureToDisk(ImageSource imgSrc, string fileName)
{
var renderer = new FileImageSourceHandler();
var photo = await renderer.LoadImageAsync(imgSrc, Android.App.Application.Context);
if (photo == null)
{
#if DEBUG
Console.WriteLine("!!!LoadImage failed!!!");
#endif
return;
}
var dir = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDcim);
var Dcim = dir.AbsolutePath;
string cameraFolder = System.IO.Path.Combine(Dcim, "Camera");
string jpgFileName = System.IO.Path.Combine(cameraFolder, fileName);
#if DEBUG
Console.WriteLine("!!!file path to save: " + jpgFileName);
#endif
try
{
var stream = new FileStream(jpgFileName, FileMode.Create);
photo.Compress(Bitmap.CompressFormat.Jpeg, 100, stream);
stream.Close();
#if DEBUG
Console.WriteLine("!!!!File saved!!!!");
#endif
//mediascan adds the saved image into the gallery
// this code will return error: [SendBroadcastPermission] action:android.intent.action.MEDIA_SCANNER_SCAN_FILE, mPermissionType:0
var mediaScanIntent = new Intent(Intent.ActionMediaScannerScanFile);
mediaScanIntent.SetData(Android.Net.Uri.FromFile(new Java.IO.File(jpgFileName)));
Xamarin.Forms.Forms.Context.SendBroadcast(mediaScanIntent);
}
catch (SystemException e)
{
#if DEBUG
System.Console.WriteLine(e.Message);
#endif
}
}
async void SetMasterLeftBarButton(UIViewController containerController, MasterDetailPage masterDetailPage)
{
if (!masterDetailPage.ShouldShowToolbarButton())
{
containerController.NavigationItem.LeftBarButtonItem = null;
return;
}
EventHandler handler = (o, e) => masterDetailPage.IsPresented = !masterDetailPage.IsPresented;
bool shouldUseIcon = masterDetailPage.Master.Icon != null;
if (shouldUseIcon)
{
try
{
// Simplified the following code because we do not have access to Internals.Registrar.
//
// var source = Internals.Registrar.Registered.GetHandler<IImageSourceHandler>(masterDetailPage.Master.Icon.GetType());
var source = new FileImageSourceHandler();
var icon = await source.LoadImageAsync(masterDetailPage.Master.Icon);
containerController.NavigationItem.LeftBarButtonItem = new UIBarButtonItem(icon, UIBarButtonItemStyle.Plain, handler);
}
catch (Exception)
{
// Throws Exception otherwise would catch more specific exception type
shouldUseIcon = false;
}
}
if (!shouldUseIcon)
{
containerController.NavigationItem.LeftBarButtonItem = new UIBarButtonItem(masterDetailPage.Master.Title, UIBarButtonItemStyle.Plain, handler);
}
}
public async void SavePictureToDisk(ImageSource imgSrc, string fileName)
{
var renderer = new FileImageSourceHandler();
var photo = await renderer.LoadImageAsync(imgSrc);
var documentsDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
string jpgFileName = System.IO.Path.Combine(documentsDirectory, fileName);
NSData imgData = photo.AsJPEG();
NSError err = null;
bool saved = imgData.Save(jpgFileName, false, out err);
#if DEBUG
if (saved)
{
Console.WriteLine("!!!!iOS: QRCode file saved!!!");
//return true;
}
else
{
Console.WriteLine("!!!iOS: NOT saved as " + jpgFileName + " because " + err.LocalizedDescription);
//return false;
}
#endif
}
Task <UIImage> GetImage(FileImageSource image)
{
var handler = new FileImageSourceHandler();
return(handler.LoadImageAsync(image));
}
Task <Bitmap> GetBitmap(FileImageSource image)
{
var handler = new FileImageSourceHandler();
return(handler.LoadImageAsync(image, this.Control.Context));
}
public UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
{
if (LeftTabbedPage.TabItemTemplate != null)
{
var cell = LeftTabbedPage.TabItemTemplate.CreateContent() as ViewCellEx;
cell.BindingContext = MenuItems[indexPath.Row];
cell.Parent = LeftTabbedPage;
var rect = new Rectangle(0, 0, cell.View.WidthRequest, cell.View.HeightRequest);
cell.View.Layout(rect);
if (Platform.GetRenderer(cell.View) == null)
{
Platform.SetRenderer(cell.View, Platform.CreateRenderer(cell.View));
}
var renderer = Platform.GetRenderer(cell.View);
var nativeView = renderer.NativeView;
nativeView.AutoresizingMask = UIViewAutoresizing.All;
nativeView.ContentMode = UIViewContentMode.ScaleToFill;
nativeView.Frame = new CGRect(0, 0, cell.View.WidthRequest, cell.View.HeightRequest);
nativeView.SetNeedsLayout();
var nativeCell = new UITableViewCell();
nativeCell.Frame = new CGRect(0, 0, cell.View.WidthRequest, cell.View.HeightRequest);
nativeCell.SelectionStyle = UITableViewCellSelectionStyle.None;
foreach (var subView in nativeCell.ContentView.Subviews)
{
subView.RemoveFromSuperview();
}
nativeCell.AddSubview(nativeView);
return(nativeCell);
}
else
{
var cell = tableView.DequeueReusableCell(UIVerticalTabbarViewCell.Key);
cell.SelectionStyle = UITableViewCellSelectionStyle.None;
var item = MenuItems[indexPath.Row];
if (cell is UIVerticalTabbarViewCell verticalTabbarViewCell)
{
verticalTabbarViewCell.TitleView.Text = item.Title;
// verticalTabbarViewCell.IconView.Image = new UIImage(item.Icon).ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate);
var imageSource = item.IconImageSource;
if (imageSource is FileImageSource fileImageSource)
{
var fileImageSOurceHandler = new FileImageSourceHandler();
var image = fileImageSOurceHandler.LoadImageAsync(imageSource).Result;
if (image != null)
{
verticalTabbarViewCell.IconView.Image =
image.ImageWithRenderingMode(UIImageRenderingMode.AlwaysTemplate);
}
}
if (indexPath.Row == 0)
{
verticalTabbarViewCell.TitleView.TextColor = UIColor.Orange;
verticalTabbarViewCell.IconView.TintColor = UIColor.Orange;
}
else
{
verticalTabbarViewCell.TitleView.TextColor = UIColor.Gray;
verticalTabbarViewCell.IconView.TintColor = UIColor.Gray;
}
}
return(cell);
}
}
