public static async Task<Bitmap> GetBitmapAsync (SvgImage svgImage, int width, int height)
{
Bitmap result = null;
Stream svgStream = await SvgService.GetSvgStreamAsync (svgImage).ConfigureAwait (false);
await Task.Run(() =>
{
var svgReader = new SvgReader(new StreamReader(svgStream));
var graphics = svgReader.Graphic;
var scale = 1.0;
if (height >= width)
{
scale = height / graphics.Size.Height;
}
else
{
scale = width / graphics.Size.Width;
}
var canvas = new AndroidPlatform().CreateImageCanvas(graphics.Size, scale);
graphics.Draw(canvas);
var image = (BitmapImage)canvas.GetImage();
result = image.Bitmap;
});
return result;
}
public static async Task<Stream> GetSvgStreamAsync (SvgImage svgImage)
{
Stream stream = null;
//Insert into Dictionary
if (!SvgStreamByPath.ContainsKey (svgImage.SvgPath)) {
if (svgImage.SvgAssembly == null)
throw new Exception ("Svg Assembly not specified. Please specify assembly using the SvgImage Control SvgAssembly property.");
stream = svgImage.SvgAssembly.GetManifestResourceStream (svgImage.SvgPath);
if (stream == null)
throw new Exception (string.Format ("Not able to retrieve svg from {0} make sure the svg is an Embedded Resource and the path is set up correctly", svgImage.SvgPath));
SvgStreamByPath.Add (svgImage.SvgPath, stream);
return await Task.FromResult<Stream> (stream);
}
//Get from dictionary
stream = SvgStreamByPath [svgImage.SvgPath];
//Reset the stream position otherwise an error is thrown (SvgFactory.GetBitmap sets the position to position max)
stream.Position = 0;
return await Task.FromResult<Stream> (stream);
}
public ContentView CreateImageButton (string buttonImage, double height, double width,
Action tappedCallback)
{
var grid = new Grid {
RowDefinitions = new RowDefinitionCollection {
new RowDefinition {
Height = new GridLength (1, GridUnitType.Star)
},
},
ColumnDefinitions = new ColumnDefinitionCollection {
new ColumnDefinition {
Width = new GridLength (1, GridUnitType.Star)
},
},
BackgroundColor = Color.Transparent,
HorizontalOptions = LayoutOptions.Center,
RowSpacing = 5
};
var navImage = new SvgImage {
SvgPath = string.Format ("ExtendedMap.Forms.Plugin.Abstractions.Images.{0}", buttonImage),
SvgAssembly = typeof(CustomMapContentView).GetTypeInfo ().Assembly,
HorizontalOptions = LayoutOptions.Center,
HeightRequest = height,
WidthRequest = width
};
grid.GestureRecognizers.Add (new TapGestureRecognizer{ Command = new Command (tappedCallback) });
grid.Children.Add (navImage, 0, 0);
return new ContentView { Content = grid };
}
private static void OnReplacementColorsPropertyChanged(BindableObject d, ColorPairs in_OldValue, ColorPairs in_NewValue)
{
SvgImage element = d as SvgImage;
if (element == null)
{
return;
}
if (in_OldValue != null)
{
in_OldValue.CollectionChanged -= element.ColorPairs_CollectionChanged;
}
if (in_NewValue != null)
{
in_NewValue.CollectionChanged -= element.ColorPairs_CollectionChanged;
in_NewValue.CollectionChanged += element.ColorPairs_CollectionChanged;
}
if (in_NewValue == in_OldValue)
{
return;
}
element.OnReplacementColorsChanged( );
}
public ViaCode()
{
Title = "Via Code";
//Get SVGs from http://thenounproject.com/
var svgPaths = new List<string>
{
"SampleApp.Images.CoolMask.svg",
"SampleApp.Images.Elvis.svg",
"SampleApp.Images.tiger.svg",
//TEMP REMOVING THE SPACE SHIPS UNTIL SUPPORT FOR svg is better for Win Phone
//"SampleApp.Images.ErulisseuiinSpaceshipPack.svg",
};
var grid = new Grid
{
RowDefinitions = new RowDefinitionCollection(),
ColumnDefinitions = new ColumnDefinitionCollection()
};
for (var rowIndex = 0; rowIndex < svgPaths.Count; rowIndex++)
{
var svgPath = svgPaths[rowIndex];
grid.RowDefinitions.Add(new RowDefinition { Height = GridLength.Auto });
for (var columnIndex = 0; columnIndex <= 4; columnIndex++)
{
grid.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
//IMPORTANT Make sure you set both SvgPath and SvgAssembly
var svgImage = new SvgImage
{
SvgPath = svgPath,
SvgAssembly = typeof(App).GetTypeInfo().Assembly,
HeightRequest = columnIndex * 50,
WidthRequest = columnIndex * 50,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center,
BackgroundColor = Color.White
};
grid.Children.Add(svgImage, columnIndex, rowIndex);
}
}
var verticalScrollView = new ScrollView { Orientation = ScrollOrientation.Vertical, Content = grid };
var horizontalScrollView = new ScrollView
{
Orientation = ScrollOrientation.Horizontal,
Content = verticalScrollView,
};
Content = horizontalScrollView;
}
public SVGPage()
{
//Get SVGs from http://thenounproject.com/
var svgPaths = new List<string>
{
"PluginSampleApp.Images.CoolGuy.svg",
"PluginSampleApp.Images.Elvis.svg",
"PluginSampleApp.Images.tiger.svg",
};
var grid = new Grid
{
RowDefinitions = new RowDefinitionCollection(),
ColumnDefinitions = new ColumnDefinitionCollection()
};
var svgId = 0;
for (var rowIndex = 0; rowIndex < svgPaths.Count; rowIndex++)
{
var svgPath = svgPaths[rowIndex];
grid.RowDefinitions.Add(new RowDefinition {Height = GridLength.Auto});
for (var columnIndex = 0; columnIndex <= 4; columnIndex++,svgId++)
{
grid.ColumnDefinitions.Add(new ColumnDefinition {Width = GridLength.Auto});
//IMPORTANT Make sure you set both SvgPath and SvgAssembly
var svgImage = new SvgImage
{
SvgPath = svgPath,
StyleId = string.Format("svg" + svgId),
SvgAssembly = typeof (App).GetTypeInfo().Assembly,
HeightRequest = columnIndex*50,
WidthRequest = columnIndex*50,
HorizontalOptions = LayoutOptions.Center,
VerticalOptions = LayoutOptions.Center,
BackgroundColor = Color.White
};
grid.Children.Add(svgImage, columnIndex, rowIndex);
}
}
var verticalScrollView = new ScrollView {Orientation = ScrollOrientation.Vertical, Content = grid};
var horizontalScrollView = new ScrollView
{
Orientation = ScrollOrientation.Horizontal,
Content = verticalScrollView,
};
Content = horizontalScrollView;
}
public ContentView CreateImageButton (string buttonImage, string buttonText, double height, double width,
Action tappedCallback)
{
var relativeLayout = new RelativeLayout {BackgroundColor = Color.Transparent};
relativeLayout.GestureRecognizers.Add(new TapGestureRecognizer { Command = new Command(tappedCallback) });
var svgImage = new SvgImage {
SvgPath = string.Format ("ExtendedMap.Forms.Plugin.Abstractions.Images.{0}", buttonImage),
SvgAssembly = typeof(CustomMapContentView).GetTypeInfo ().Assembly,
HeightRequest = height,
WidthRequest = width
};
var svgImageX = Device.OnPlatform (0.3,0.36,0.36);
var svgImageWidth = Device.OnPlatform (0.45,0.3,0.45);
relativeLayout.Children.Add (svgImage,
Constraint.RelativeToParent ((parent) => (parent.Width * svgImageX)),
Constraint.RelativeToParent ((parent) => (parent.Height * 0)),
Constraint.RelativeToParent ((parent) => (parent.Width * svgImageWidth)),
Constraint.RelativeToParent ((parent) => (parent.Height * 0.45))
);
var label = new Label {
Text = buttonText,
Font = Font.SystemFontOfSize (14),
TextColor = Colors.DarkBlue,
HorizontalOptions = LayoutOptions.Center
};
var stackLayout = new StackLayout ();
stackLayout.Children.Add (label);
relativeLayout.Children.Add (stackLayout,
Constraint.RelativeToParent ((parent) => (parent.Width * 0)),
Constraint.RelativeToParent ((parent) => (parent.Height * 0.6)),
Constraint.RelativeToParent ((parent) => (parent.Width * 1)),
Constraint.RelativeToParent ((parent) => (parent.Height * 0.4))
);
return new ContentView { Content = relativeLayout };
}
public void Initialize()
{
Image = new SvgImage {
WidthRequest = 34,
VerticalOptions = LayoutOptions.Center,
HorizontalOptions = LayoutOptions.Center,
SvgAssembly = typeof(App).GetTypeInfo ().Assembly,
SvgPath = "ClothesAndWeather.Images." + Type.ToString ().ToLower () + "-" + (Direction == -1 ? "left" : "right") + ".svg"
};
this.Content = Image;
Opacity = 0;
double y = 0;
double h = 0;
switch (Type) {
case ClothType.Head:
y = 0;
h = 0.18;
break;
case ClothType.Body:
y = 0.25;
h = 0.3;
break;
case ClothType.Pants:
y = 0.71;
h = 0.32;
break;
case ClothType.Shoes:
y = 1;
h = 0.2;
break;
}
AbsoluteLayout.SetLayoutBounds (this, new Rectangle (Direction == -1 ? 0 : 1, y, 0.2, h));
AbsoluteLayout.SetLayoutFlags (this, AbsoluteLayoutFlags.All);
}
public App() {
_ViewModel = new TestModel();
var insetLabel = new Label();
insetLabel.SetBinding(Label.TextProperty, nameof(TestModel.SvgInsets), stringFormat: "Stretchable Insets: {0:C2}");
var resourcePicker = new Picker() {
HorizontalOptions = LayoutOptions.FillAndExpand,
};
foreach (var resourceName in TestModel.AvailableResourceNames) {
resourcePicker.Items.Add(resourceName);
}
resourcePicker.SetBinding(Picker.SelectedIndexProperty, nameof(TestModel.SvgResourceIndex), BindingMode.TwoWay);
var insetSlider = new Slider() {
Minimum = 0,
Maximum = 35,
Value = _ViewModel.AllSidesInset,
};
insetSlider.SetBinding(Slider.ValueProperty, nameof(TestModel.AllSidesInset), BindingMode.TwoWay);
var slicingSvg = new SvgImage() {
SvgAssembly = typeof(App).GetTypeInfo().Assembly,
WidthRequest = 300,
HeightRequest = 300,
};
slicingSvg.SetBinding(SvgImage.SvgStretchableInsetsProperty, nameof(TestModel.SvgInsets));
slicingSvg.SetBinding(SvgImage.SvgPathProperty, nameof(TestModel.SvgResourcePath));
var svgButton = new Button() {
WidthRequest = 300,
HeightRequest = 300,
};
// The root page of your application
MainPage = new NavigationPage (new ContentPage {
Title = "9-Slice SVG Scaling",
Content = new StackLayout {
VerticalOptions = LayoutOptions.Start,
HorizontalOptions = LayoutOptions.Center,
Children = {
insetLabel,
resourcePicker,
insetSlider,
new AbsoluteLayout() {
WidthRequest = 300,
HeightRequest = 300,
Children = {
slicingSvg,
svgButton,
},
},
},
BindingContext = _ViewModel,
},
});
svgButton.Clicked += (sender, e) => {
MainPage.DisplayAlert("Tapped!", "SVG button tapped!", "OK");
};
}