protected void canvasControl_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
if (Points.Count > 0)
{
var ds = args.DrawingSession;
ds.Transform = Matrix3x2.CreateRotation((float)(this.Rotation * Math.PI / 180f), PolyLineCenter);
CanvasPathBuilder pathBuilder = new CanvasPathBuilder(sender);
pathBuilder.BeginFigure((float)Points[0].X, (float)Points[0].Y);
for (int i = 1; i < Points.Count; i++)
{
pathBuilder.AddLine((float)Points[i].X, (float)Points[i].Y);
}
pathBuilder.EndFigure(CanvasFigureLoop.Open);
CanvasGeometry canvasGeometry = CanvasGeometry.CreatePath(pathBuilder);
CanvasCommandList cl = new CanvasCommandList(sender);
using (CanvasDrawingSession clds = cl.CreateDrawingSession())
{
ds.DrawGeometry(canvasGeometry, PolyLineColor, PolyLineStrokeWidth);
}
GaussianBlurEffect blur = new GaussianBlurEffect();
blur.Source = cl;
blur.BlurAmount = PolyLineStrokeWidth;
args.DrawingSession.DrawImage(blur);
}
}
void DrawShadow(CanvasControl canvasCtrl, CanvasDrawingSession drawSession, List <ShadowParam> shadowParams)
{
var canvasCommandList = new CanvasCommandList(canvasCtrl);
var content = _contentPresenter.Content as FrameworkElement;
var contentWidth = content.ActualWidth + content.Margin.Left + content.Margin.Right;
var contentHeight = content.ActualHeight + content.Margin.Top + content.Margin.Bottom;
var radius = GetActualCornerRadius(contentWidth);
double maxOffset_Y = shadowParams.Max(param => param.Offset_Y);
_shadowCanvas.VerticalAlignment = content.VerticalAlignment;
_shadowCanvas.HorizontalAlignment = content.HorizontalAlignment;
using (var ds = canvasCommandList.CreateDrawingSession())
{
ds.FillRoundedRectangle(new Rect(0, 0, contentWidth, contentHeight), radius, radius, Color.FromArgb(255, 0, 0, 0));
}
CompositeEffect compositeEffect = CreateEffects(shadowParams, canvasCommandList);
var bound = compositeEffect.GetBounds(drawSession);
double shadowWidth = Math.Abs(bound.X);
double shadowHeight = Math.Abs(bound.Y);
UpdateLayout(maxOffset_Y, bound, shadowWidth, shadowHeight);
DrawEffect(drawSession, compositeEffect, shadowWidth, shadowHeight);
}
public async Task Save(StorageFile file)
{
var image = GetImage();
// Measure the extent of the image (which may be cropped).
Rect imageBounds;
using (var commandList = new CanvasCommandList(sourceBitmap.Device))
using (var drawingSession = commandList.CreateDrawingSession())
{
imageBounds = image.GetBounds(drawingSession);
}
// Rasterize the image into a rendertarget.
using (var renderTarget = new CanvasRenderTarget(sourceBitmap.Device, (float)imageBounds.Width, (float)imageBounds.Height, 96))
{
using (var drawingSession = renderTarget.CreateDrawingSession())
{
drawingSession.Blend = CanvasBlend.Copy;
drawingSession.DrawImage(image, -(float)imageBounds.X, -(float)imageBounds.Y);
}
// Save it out.
var format = file.FileType.Equals(".png", StringComparison.OrdinalIgnoreCase) ? CanvasBitmapFileFormat.Png : CanvasBitmapFileFormat.Jpeg;
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
stream.Size = 0;
await renderTarget.SaveAsync(stream, format);
}
}
}
/// <summary>
/// Renders text into an intermediate bitmap and sets this bitmap as the input to the flame
/// effect graph. The effect graph must already be created before calling this method.
/// </summary>
private void SetupText()
{
textCommandList = new CanvasCommandList(this.canvas);
using (var ds = textCommandList.CreateDrawingSession())
{
ds.Clear(Color.FromArgb(0, 0, 0, 0));
ds.DrawText(
text,
0,
0,
Colors.White,
new CanvasTextFormat
{
FontFamily = "Segoe UI",
FontSize = fontSize,
ParagraphAlignment = Windows.UI.Text.ParagraphAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Top
});
}
// Hook up the bitmap to the inputs of the flame effect graph.
morphology.Source = textCommandList;
composite.Inputs[1] = textCommandList;
}
public void PaintSet(ICanvasResourceCreator rc, CanvasBitmap cb, float R, Color co)
{
//Paint：绘画
Paint = new CanvasCommandList(rc);
using (CanvasDrawingSession ds = Paint.CreateDrawingSession())
{
ds.FillEllipse(0, 0, R, R, PaintBrush(rc, R, PaintHard, PaintOpacity, co));
ICanvasImage ci = new ScaleEffect
{
Source = cb,
Scale = new Vector2(2 * R / cb.SizeInPixels.Width)
};
ds.DrawImage(ci, -R, -R, ci.GetBounds(rc), 1, CanvasImageInterpolation.HighQualityCubic, CanvasComposite.DestinationIn);
}
//Show：展示
var radius = (float)Math.Sqrt(R);
PaintShow = new CanvasCommandList(rc);
using (CanvasDrawingSession ds = PaintShow.CreateDrawingSession())
{
ds.FillEllipse(0, 0, radius, radius, PaintBrush(rc, radius, PaintHard, PaintOpacity, Colors.White));
ICanvasImage ci = new ScaleEffect
{
Source = cb,
Scale = new Vector2(2 * radius / cb.SizeInPixels.Width)
};
ds.DrawImage(ci, -radius, -radius, ci.GetBounds(rc), 1, CanvasImageInterpolation.HighQualityCubic, CanvasComposite.DestinationIn);
}
}
protected ICanvasBrush GetBackgroundBrush(ICanvasAnimatedControl sender, CanvasAnimatedDrawEventArgs args, string item, TimeSpan ellapsed)
{
var commands = new CanvasCommandList(sender);
var b = TransformBounds(Bounds);
using (var session = commands.CreateDrawingSession())
{
session.Clear(Color.FromArgb(255, 255, 255, 255));
session.DrawLine((float)b.X, (float)b.Y, (float)b.X + (float)b.Width, (float)b.Y + (float)b.Height, Colors.Black);
session.DrawLine((float)b.X, (float)b.Y + (float)b.Height, (float)b.X + (float)b.Width, (float)b.Y, Colors.Black);
session.DrawText(item, TransformBounds(Bounds), Color.FromArgb(155, 63, 63, 63), new CanvasTextFormat()
{
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Center,
FontSize = 30f
});
}
var brush = new CanvasImageBrush(sender, commands);
brush.SourceRectangle = b;
brush.Transform = Matrix3x2.CreateTranslation((float)b.X, (float)b.Y);
return(brush);
}
// This is the Draw method used by the CanvasControl. The CanvasControl gives us the ability
// to quickly draw images, other shapes and text.
void canvasControl_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
CanvasCommandList cl = new CanvasCommandList(sender);
using (CanvasDrawingSession clds = cl.CreateDrawingSession())
{
for (int i = 0; i < 100; i++)
{
for (int x = 0; x < field.field.GetLength(0); x++)
{
for (int y = 0; y < field.field.GetLength(1); y++)
{
clds.Antialiasing = CanvasAntialiasing.Antialiased;
clds.FillRectangle(x * (0 + 75), y * (0 + 75), 70, 70, RndColor());
}
}
}
}
args.DrawingSession.DrawImage(cl);
if (Enemies.Count < 2)
{
Enemies.Add(new Enemy(rnd.Next(0, 6)));
Enemies.Add(new Enemy(rnd.Next(0, 6)));
}
for (int i = 0; i < Enemies.Count; i++)
{
Enemies[i].Draw(args, enemyBitmap);
if (Enemies[i].column > 600)
{
Enemies.RemoveAt(i);
}
}
}
private CanvasCommandList GenerateTextDisplay(ICanvasResourceCreator resourceCreator, float width, float height)
{
var cl = new CanvasCommandList(resourceCreator);
using (var ds = cl.CreateDrawingSession())
{
float top = height - offset;
float center = width / 4.0f;
float symbolPos = center - 5.0f;
float labelPos = center + 5.0f;
for (int i = firstLine; i < lastLine; ++i)
{
float y = top + lineHeight * i;
int index = i;
if (index < characters.Length)
{
ds.DrawText(string.Format("{0}", (char)characters[index].Code), symbolPos, y, Colors.White, symbolText);
ds.DrawText(string.Format("0x{0:X} - {1}", characters[index].Code, characters[index].Label), labelPos, y, Colors.White, labelText);
}
}
}
return(cl);
}
public static void Invert()
{
//Undo：撤销
Undo undo = new Undo();
undo.MaskInstantiation(App.Model.MaskRenderTarget, App.Model.MaskAnimatedTarget);
App.UndoAdd(undo);
CanvasCommandList vcl = new CanvasCommandList(App.Model.VirtualControl);
using (var ds = vcl.CreateDrawingSession())
{
ds.Clear(Colors.White);
}
CanvasCommandList acl = new CanvasCommandList(App.Model.AnimatedControl);
using (var ds = acl.CreateDrawingSession())
{
ds.Clear(Colors.White);
}
App.Mask(vcl, acl, 4);//反选
//重新设置描边
App.Model.isReStroke = true;
App.Model.isAnimated = true;
if (App.Model.isMask == true)
{
App.Model.isReRender = true; //重新渲染
App.Model.Refresh++; //画布刷新
}
}
// TODO: Create a ShadowEffect : Effect that can be used as a parameter to add a shadow
// to other draw functions.
public void FillEllipseShadow(
Rectangle rectangle,
Color color,
float shadowBlur = 8.0f)
{
rectangle = rectangle.Inflate(-2 * shadowBlur, -2 * shadowBlur);
var centerPoint = rectangle.Center;
float radiusX = rectangle.Width / 2;
float radiusY = rectangle.Height / 2f;
var winColor = global::Windows.UI.Color.FromArgb(color.A, color.R, color.G, color.B);
CanvasCommandList commandList = new CanvasCommandList(GraphicsManager.Shared.GetCanvasDevice());
using (var drawingSession = commandList.CreateDrawingSession())
{
drawingSession.FillEllipse(centerPoint.X, centerPoint.Y, radiusX, radiusY, winColor);
//this._session.FillEllipse(centerPoint.X, centerPoint.Y, radiusX, radiusY, winColor);
};
GaussianBlurEffect effect = new GaussianBlurEffect()
{
Source = commandList,
BlurAmount = shadowBlur,
};
//var sourceRect = new global::Windows.Foundation.Rect(rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
//var destinationRect = new global::Windows.Foundation.Rect(rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
this._session.DrawImage(effect); //, destinationRect, sourceRect);
//this._session.DrawRectangle(destinationRect, winColor);
}
public CanvasCommandList GetCanvasImage(ICanvasResourceCreator resourceCreator, float scaleX, float scaleY)
{
lock (this)
{
var commandList = new CanvasCommandList(resourceCreator);
using (var session = commandList.CreateDrawingSession())
{
var width = _composition.Bounds.Width * scaleX;
var height = _composition.Bounds.Height * scaleY;
if (_bitmapCanvas == null || _bitmapCanvas.Width < width || _bitmapCanvas.Height < height)
{
_bitmapCanvas?.Dispose();
_bitmapCanvas = new BitmapCanvas(width, height);
}
using (_bitmapCanvas.CreateSession(resourceCreator.Device, (float)width,
(float)height, session))
{
_bitmapCanvas.Clear(Colors.Transparent);
LottieLog.BeginSection("Drawable.Draw");
if (_compositionLayer == null)
{
return(null);
}
_matrix.Reset();
_matrix = MatrixExt.PreScale(_matrix, scaleX, scaleY);
_compositionLayer.Draw(_bitmapCanvas, _matrix, _alpha);
LottieLog.EndSection("Drawable.Draw");
}
}
return(commandList);
}
}
public void UpdateMask()
{
var start = _canvas.Size.ToVector2() * _canvas.Center.ToVector2();
var end = new Vector2(start.X > _canvas.Size.Width - start.X ? 0.0f : (float)_canvas.Size.Width,
start.Y > _canvas.Size.Height - start.Y ? 0.0f : (float)_canvas.Size.Height);
var radius = (end - start).Length();
var commandList = new CanvasCommandList(_canvas);
using (var drawingSession = commandList.CreateDrawingSession())
{
using (var brush = new CanvasRadialGradientBrush(_canvas, Colors.White, Colors.Black)
{
Center = start,
RadiusX = radius,
RadiusY = radius
})
drawingSession.FillRectangle(new Rect(new Point(0, 0), _canvas.Size), brush);
}
_dissolveEffect.Source2 = new Transform2DEffect
{
Source = commandList
};
}
public async Task Save(StorageFile file)
{
var image = GetImage();
// Measure the extent of the image (which may be cropped).
Rect imageBounds;
using (var commandList = new CanvasCommandList(sourceBitmap.Device))
using (var drawingSession = commandList.CreateDrawingSession())
{
imageBounds = image.GetBounds(drawingSession);
}
// Rasterize the image into a rendertarget.
using (var renderTarget = new CanvasRenderTarget(sourceBitmap.Device, (float)imageBounds.Width, (float)imageBounds.Height, 96))
{
using (var drawingSession = renderTarget.CreateDrawingSession())
{
drawingSession.Blend = CanvasBlend.Copy;
drawingSession.DrawImage(image, -(float)imageBounds.X, -(float)imageBounds.Y);
}
// Save it out.
var format = file.FileType.Equals(".png", StringComparison.OrdinalIgnoreCase) ? CanvasBitmapFileFormat.Png : CanvasBitmapFileFormat.Jpeg;
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
stream.Size = 0;
await renderTarget.SaveAsync(stream, format);
}
}
}
/// <summary>
/// Renders text into a command list and sets this as the input to the flame
/// effect graph. The effect graph must already be created before calling this method.
/// </summary>
private void SetupText(ICanvasResourceCreator resourceCreator)
{
textCommandList = new CanvasCommandList(resourceCreator);
using (var ds = textCommandList.CreateDrawingSession())
{
ds.Clear(Color.FromArgb(0, 0, 0, 0));
ds.DrawText(
text,
0,
0,
Colors.White,
new CanvasTextFormat
{
FontFamily = "Segoe UI",
FontSize = fontSize,
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Top
});
}
// Hook up the command list to the inputs of the flame effect graph.
morphology.Source = textCommandList;
composite.Sources[1] = textCommandList;
}
/// <summary>
/// Renders text into a command list and sets this as the input to the flame
/// effect graph. The effect graph must already be created before calling this method.
/// </summary>
private void SetupText(ICanvasResourceCreator resourceCreator)
{
textCommandList = new CanvasCommandList(resourceCreator);
using (var ds = textCommandList.CreateDrawingSession())
{
ds.Clear(Colors.Transparent);
ds.DrawText(
"Windows.UI.Composition",
0,
0,
Colors.White,
new Microsoft.Graphics.Canvas.Text.CanvasTextFormat
{
FontFamily = "Segoe UI",
FontSize = 20,
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Top
});
}
// Hook up the command list to the inputs of the flame effect graph.
morphology.Source = textCommandList;
composite.Sources[1] = textCommandList;
}
public override ICanvasImage GetRender(ICanvasResourceCreator resourceCreator, Layerage layerage)
{
if (layerage.Children.Count == 0)
{
return(null);
}
ICanvasImage childImage = LayerBase.Render(resourceCreator, layerage);
if (childImage is null)
{
return(null);
}
CanvasCommandList command = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession drawingSession = command.CreateDrawingSession())
{
if (this.Transform.IsCrop)
{
CanvasGeometry geometryCrop = this.Transform.CropTransformer.ToRectangle(resourceCreator);
using (drawingSession.CreateLayer(1, geometryCrop))
{
drawingSession.DrawImage(childImage);
}
}
else
{
drawingSession.DrawImage(childImage);
}
}
return(command);
}
private CanvasCommandList GenerateTextDisplay(ICanvasResourceCreator resourceCreator, float width, float height)
{
var cl = new CanvasCommandList(resourceCreator);
using (var ds = cl.CreateDrawingSession())
{
float top = height - mOffset;
float center = width / 2.0f;
float symbolPos = center - 5.0f;
float labelPos = center + 5.0f;
for (int i = mFirstLine; i < mLastLine; ++i)
{
float y = top + mLineHeight * i;
int index = i;
if (index < characters.Length)
{
ds.DrawText(characters[index], labelPos, y, Color.FromArgb(0xff, 0x53, 0xef, 0xef), symbolText);
}
}
}
return(cl);
}
public void ProcessFrame(ProcessVideoFrameContext context)
{
var inputSurface = context.InputFrame.Direct3DSurface;
var outputSurface = context.OutputFrame.Direct3DSurface;
using (var inputBitmap = CanvasBitmap.CreateFromDirect3D11Surface(canvasDevice, inputSurface))
using (var renderTarget = CanvasRenderTarget.CreateFromDirect3D11Surface(canvasDevice, outputSurface))
using (var ds = renderTarget.CreateDrawingSession())
using (var brush = new CanvasImageBrush(canvasDevice, inputBitmap))
using (var textCommandList = new CanvasCommandList(canvasDevice))
{
using (var clds = textCommandList.CreateDrawingSession())
{
clds.DrawText(
"Win2D\nMediaClip",
(float)inputBitmap.Size.Width / 2,
(float)inputBitmap.Size.Height / 2,
brush,
new CanvasTextFormat()
{
FontSize = (float)inputBitmap.Size.Width / 5,
FontWeight = new FontWeight()
{
Weight = 999
},
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Center
});
}
var background = new GaussianBlurEffect()
{
BlurAmount = 10,
BorderMode = EffectBorderMode.Hard,
Source = new BrightnessEffect()
{
BlackPoint = new Vector2(0.5f, 0.7f),
Source = new SaturationEffect()
{
Saturation = 0,
Source = inputBitmap
}
}
};
var shadow = new ShadowEffect()
{
Source = textCommandList,
BlurAmount = 10
};
var composite = new CompositeEffect()
{
Sources = { background, shadow, textCommandList }
};
ds.DrawImage(composite);
}
}
private async void DialController_ButtonClicked(RadialController sender, RadialControllerButtonClickedEventArgs args)
{
try
{
ShowBusyIndicator("saving file...");
var picker = new FileSavePicker();
picker.FileTypeChoices.Add("Jpegs", new List <string>()
{
".jpg"
});
var file = await picker.PickSaveFileAsync();
if (file == null)
{
return;
}
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
// watermark the image
var device = CanvasDevice.GetSharedDevice();
var bounds = virtualBitmap.Bounds;
var text = new CanvasCommandList(device);
using (var ds = text.CreateDrawingSession())
{
ds.DrawText("Created by Dial-In", bounds, Colors.White,
new CanvasTextFormat
{
VerticalAlignment = CanvasVerticalAlignment.Bottom,
HorizontalAlignment = CanvasHorizontalAlignment.Right,
FontFamily = "Segoe UI",
FontSize = (float)(bounds.Height / 12)
});
}
var effect = new BlendEffect()
{
Background = virtualBitmap,
Foreground = text,
Mode = BlendEffectMode.Difference
};
// save the image to final file
await CanvasImage.SaveAsync(effect, bounds, 96, device, stream, CanvasBitmapFileFormat.Jpeg);
}
}
catch (Exception ex)
{
await new MessageDialog($"Something went wrong saving the image: {ex}", "Exception").ShowAsync();
}
finally
{
HideBusyIndicator();
}
}
static void ValidateCanDrawImage(CanvasDevice device, ICanvasImage image)
{
using (var commandList = new CanvasCommandList(device))
using (var drawingSession = commandList.CreateDrawingSession())
{
drawingSession.DrawImage(image);
}
}
public void ProcessFrame(ProcessVideoFrameContext context)
{
var inputSurface = context.InputFrame.Direct3DSurface;
var outputSurface = context.OutputFrame.Direct3DSurface;
using (var inputBitmap = CanvasBitmap.CreateFromDirect3D11Surface(canvasDevice, inputSurface))
using (var renderTarget = CanvasRenderTarget.CreateFromDirect3D11Surface(canvasDevice, outputSurface))
using (var ds = renderTarget.CreateDrawingSession())
using (var brush = new CanvasImageBrush(canvasDevice, inputBitmap))
using (var textCommandList = new CanvasCommandList(canvasDevice))
{
using (var clds = textCommandList.CreateDrawingSession())
{
clds.DrawText(
"Win2D\nMediaClip",
(float)inputBitmap.Size.Width / 2,
(float)inputBitmap.Size.Height / 2,
brush,
new CanvasTextFormat()
{
FontSize = (float)inputBitmap.Size.Width / 5,
FontWeight = new FontWeight() { Weight = 999 },
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Center
});
}
var background = new GaussianBlurEffect()
{
BlurAmount = 10,
BorderMode = EffectBorderMode.Hard,
Source = new BrightnessEffect()
{
BlackPoint = new Vector2(0.5f, 0.7f),
Source = new SaturationEffect()
{
Saturation = 0,
Source = inputBitmap
}
}
};
var shadow = new ShadowEffect()
{
Source = textCommandList,
BlurAmount = 10
};
var composite = new CompositeEffect()
{
Sources = { background, shadow, textCommandList }
};
ds.DrawImage(composite);
}
}
private static CanvasCommandList GetMarqueeToolGeometry(CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, CanvasGeometry canvasGeometry)
{
CanvasCommandList canvasCommandList = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession ds = canvasCommandList.CreateDrawingSession())
{
ds.FillGeometry(canvasGeometry, Windows.UI.Colors.DodgerBlue);
}
return(canvasCommandList);
}
public void LiquifyFill(ICanvasResourceCreator rc)//填充蓝色渐变圆形
{
Liquify = new CanvasCommandList(rc);
using (var ds = Liquify.CreateDrawingSession())
{
//画渐变圆形
CanvasRadialGradientBrush brush = PaintBrush(rc, new Vector2(LiquifySize), LiquifySize, 0, LiquifyAmount / 100, LiquifyColor);
ds.FillCircle(LiquifySize, LiquifySize, LiquifySize, brush);
}
}
private void TheCanvas_CreateResources(CanvasAnimatedControl sender, CanvasCreateResourcesEventArgs args)
{
_helloWorld = new CanvasCommandList(sender);
using (var session = _helloWorld.CreateDrawingSession())
{
session.DrawText("Hello, World!", 100, 100, Colors.Black, new CanvasTextFormat()
{
FontSize = 80
});
}
}
private static CanvasCommandList GetMarqueeToolRectangular(CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect)
{
CanvasCommandList canvasCommandList = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession ds = canvasCommandList.CreateDrawingSession())
{
Rect rect = transformerRect.ToRect();
ds.FillRectangle(rect, Windows.UI.Colors.DodgerBlue);
}
return(canvasCommandList);
}
async Task GenerateIcon(AppInfo appInfo, IconInfo iconInfo, StorageFolder folder)
{
// Draw the icon image into a command list.
var iconImage = new CanvasCommandList(device);
using (var ds = iconImage.CreateDrawingSession())
{
appInfo.DrawIconImage(ds, iconInfo);
}
// Rasterize into a rendertarget.
var renderTarget = new CanvasRenderTarget(device, iconInfo.Width, iconInfo.Height, 96);
using (var ds = renderTarget.CreateDrawingSession())
{
// Initialize with the appropriate background color.
ds.Clear(iconInfo.TransparentBackground ? Colors.Transparent : appInfo.BackgroundColor);
// Work out where to position the icon image.
var imageBounds = iconImage.GetBounds(ds);
imageBounds.Height *= 1 + iconInfo.BottomPadding;
float scaleUpTheSmallerIcons = Math.Max(1, 1 + (60f - iconInfo.Width) / 50f);
float imageScale = appInfo.ImageScale * scaleUpTheSmallerIcons;
ds.Transform = Matrix3x2.CreateTranslation((float)-imageBounds.X, (float)-imageBounds.Y) *
Utils.GetDisplayTransform(renderTarget.Size.ToVector2(), new Vector2((float)imageBounds.Width, (float)imageBounds.Height)) *
Matrix3x2.CreateScale(imageScale, renderTarget.Size.ToVector2() / 2);
// Optional shadow effet.
if (appInfo.AddShadow)
{
var shadow = new ShadowEffect
{
Source = iconImage,
BlurAmount = 12,
};
ds.DrawImage(shadow);
}
// draw the main icon image.
ds.DrawImage(iconImage);
}
// Save to a file.
using (var stream = await folder.OpenStreamForWriteAsync(iconInfo.Filename, CreationCollisionOption.ReplaceExisting))
{
await renderTarget.SaveAsync(stream.AsRandomAccessStream(), CanvasBitmapFileFormat.Png);
}
}
public void Draw(ICanvasResourceCreator creator, CanvasDrawingSession ds, double W, double H, float X = 0, float Y = 0)
{
if (this.OutPut != null)
{
CanvasCommandList CommandList = new CanvasCommandList(creator);
using (var dds = CommandList.CreateDrawingSession())
{
dds.FillRectangle(0, 0, (float)W, (float)H, this.Brush);
dds.DrawImage(this.OutPut, 0, 0, new Rect(0, 0, W, H), 1, CanvasImageInterpolation.NearestNeighbor, CanvasComposite.DestinationIn);
}
ds.DrawImage(CommandList, X, Y);
}
}
private void canvas1_CreateResources(Microsoft.Graphics.Canvas.UI.Xaml.CanvasAnimatedControl sender, Microsoft.Graphics.Canvas.UI.CanvasCreateResourcesEventArgs args)
{
cl = new CanvasCommandList(sender);
using (CanvasDrawingSession clds = cl.CreateDrawingSession())
{
clds.DrawText("Demo", new Vector2((float)Frame.Height / 2, (float)Frame.Width / 2), Colors.Red);
for (int i = 0; i < 100; i++)
{
clds.DrawText("Hello, World!", RndPosition(), Color.FromArgb(255, RndByte(), RndByte(), RndByte()));
clds.DrawCircle(RndPosition(), RndRadius(), Color.FromArgb(255, RndByte(), RndByte(), RndByte()));
}
}
}
private void canvas_CreateResources(
Microsoft.Graphics.Canvas.UI.Xaml.CanvasAnimatedControl sender,
Microsoft.Graphics.Canvas.UI.CanvasCreateResourcesEventArgs args)
{
CanvasCommandList cl = new CanvasCommandList(sender);
using (CanvasDrawingSession clds = cl.CreateDrawingSession())
{
canvas.Width = 600;
canvas.Height = 600;
canvas.TargetElapsedTime = TargetElapsedTime;
}
}
public void LiquifyDraw(ICanvasResourceCreator rc, Vector2 end, Vector2 start)//描边一个位图，用于涂抹改变方向时改变颜色的R与B分量
{
float R = 128 + (end.X - start.X) / 10 * 128;
float G = 128 + (end.Y - start.Y) / 10 * 128;
Liquify = new CanvasCommandList(rc);
using (var ds = Liquify.CreateDrawingSession())
{
//画圆环
var co = Color.FromArgb((byte)(255 * LiquifyAmount / 100), (byte)R, (byte)G, 255);
ds.FillCircle(LiquifySize, LiquifySize, LiquifySize, co);
}
}
private static CanvasCommandList GetMarqueeToolEllipse(CanvasDrawingSession drawingSession, ICanvasResourceCreator resourceCreator, TransformerRect transformerRect)
{
CanvasCommandList canvasCommandList = new CanvasCommandList(resourceCreator);
using (CanvasDrawingSession ds = canvasCommandList.CreateDrawingSession())
{
Vector2 centerPoint = transformerRect.Center;
float width = transformerRect.Width / 2;
float height = transformerRect.Height / 2;
drawingSession.FillEllipse(centerPoint, width, height, Windows.UI.Colors.DodgerBlue);
}
return(canvasCommandList);
}
public void CanvasImage_SaveAsync_SourceIsCommandList()
{
TestSaveAsync(device =>
{
var cl = new CanvasCommandList(device);
using (var ds = cl.CreateDrawingSession())
{
ds.Clear(Colors.CornflowerBlue);
}
return(cl);
});
}
public void DrawInkDoesNotModifyContextState()
{
Point[] points =
{
new Point(0, 0),
new Point(100, 100),
};
var strokeBuilder = new InkStrokeBuilder();
var stroke1 = strokeBuilder.CreateStroke(points);
strokeBuilder.SetDefaultDrawingAttributes(new InkDrawingAttributes
{
Color = Colors.Yellow,
DrawAsHighlighter = true
});
var stroke2 = strokeBuilder.CreateStroke(points);
using (var device = new CanvasDevice())
using (var target = new CanvasCommandList(device))
using (var drawingSession = target.CreateDrawingSession())
{
var originalProperties = GetPropertyValues(drawingSession);
drawingSession.DrawInk(new InkStroke[] { stroke1 });
var propertiesAfterDraw1 = GetPropertyValues(drawingSession);
drawingSession.DrawInk(new InkStroke[] { stroke2 });
var propertiesAfterDraw2 = GetPropertyValues(drawingSession);
CollectionAssert.AreEqual(originalProperties, propertiesAfterDraw1);
CollectionAssert.AreEqual(originalProperties, propertiesAfterDraw2);
}
}
public void Draw(ICanvasAnimatedControl sender, CanvasDrawingSession drawingSession)
{
if (currentThunder == null)
{
return;
}
// 保护原先画布的混合模式
var previousBlend = drawingSession.Blend;
drawingSession.Blend = blendState;
var builder = new CanvasPathBuilder(sender);
builder.BeginFigure(0, 0);
for (int i = 0; i < currentThunder.LifeLong; i++)
{
builder.AddLine(currentThunder.Path[i].X, currentThunder.Path[i].Y);
}
builder.EndFigure(CanvasFigureLoop.Open);
builder.SetSegmentOptions(CanvasFigureSegmentOptions.ForceRoundLineJoin);
// Draw the particle.
var path = CanvasGeometry.CreatePath(builder);
var NormalizeLifeTime = currentThunder.TimeSinceStart / currentThunder.Duration;
byte opacity = (byte)((NormalizeLifeTime - 1) * (NormalizeLifeTime - 1) * 255);
CanvasCommandList cl = new CanvasCommandList(sender);
using (CanvasDrawingSession clds = cl.CreateDrawingSession())
{
clds.DrawGeometry(path, currentThunder.Position, Color.FromArgb((byte)(0.75f * opacity), 255, 255, 255), 6 * currentThunder.Luminace);
}
var lightAmount = 20.6f * currentThunder.Luminace * (NormalizeLifeTime - 1) * (NormalizeLifeTime - 1);
blur.Source = cl;
blur.BlurAmount = lightAmount;
drawingSession.DrawImage(blur);
drawingSession.DrawGeometry(path, currentThunder.Position, Color.FromArgb(opacity, 255, 240, 180), 2 * currentThunder.Luminace);
drawingSession.Blend = previousBlend;
if (NormalizeLifeTime > 1)
{
currentThunder = null;
}
}
private void Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
if (_contentPresenter == null) return;
var border = VisualTreeHelper.GetChild(_contentPresenter, 0) as Border;
if (border == null) return;
var borderPoint = border.TransformToVisual(this).TransformPoint(new Point(0, 0));
var cl = new CanvasCommandList(sender);
using (var clds = cl.CreateDrawingSession())
{
clds.FillRoundedRectangle(new Rect(borderPoint.X, borderPoint.Y, border.ActualWidth, border.ActualHeight), (float)border.CornerRadius.TopLeft, (float)border.CornerRadius.TopLeft, Color.FromArgb(128, 0, 0, 0));
}
var shadowEffect = new Transform2DEffect
{
Source =
new Transform2DEffect
{
Source = new ShadowEffect
{
BlurAmount = 2,
ShadowColor = Color.FromArgb(160, 0, 0, 0),
Source = cl
},
//TODO not doing any scaling right now, confirm with larger shadows
TransformMatrix = Matrix3x2.CreateScale(1.0f, new Vector2((float)(border.ActualWidth / 2), ((float)border.ActualHeight / 2)))
},
TransformMatrix = Matrix3x2.CreateTranslation(0, 1)
};
args.DrawingSession.DrawImage(shadowEffect);
// args.DrawingSession.DrawImage(cl);
}
private void DoUIElementsEffect(CanvasControl sender, CanvasDrawingSession ds)
{
foreach (var elm in _uielements)
{
var offset = (float)ExpandAmount / 2;
using (var cl = new CanvasCommandList(ds))
{
using (var clds = cl.CreateDrawingSession())
{
using (var canvasbmp = CanvasBitmap.CreateFromBytes(sender.Device, elm.Item1, elm.Item2, elm.Item3, Windows.Graphics.DirectX.DirectXPixelFormat.B8G8R8A8UIntNormalized))
{
clds.DrawImage(canvasbmp, 0, 0);
}
}
_eg.Setup(cl, (float)GlowAmount, GlowColor);
ds.DrawImage(_eg.Output, offset + (float)elm.Item4, offset + (float)elm.Item5);
}
}
}
async Task GenerateIcon(AppInfo appInfo, IconInfo iconInfo, StorageFolder folder)
{
// Draw the icon image into a command list.
var commandList = new CanvasCommandList(device);
using (var ds = commandList.CreateDrawingSession())
{
appInfo.DrawIconImage(ds, iconInfo);
}
ICanvasImage iconImage = commandList;
// Rasterize into a rendertarget.
var renderTarget = new CanvasRenderTarget(device, iconInfo.Width, iconInfo.Height, 96);
using (var ds = renderTarget.CreateDrawingSession())
{
// Initialize with the appropriate background color.
ds.Clear(iconInfo.TransparentBackground ? Colors.Transparent : appInfo.BackgroundColor);
// Work out where to position the icon image.
var imageBounds = iconImage.GetBounds(ds);
imageBounds.Height *= 1 + iconInfo.BottomPadding;
float scaleUpTheSmallerIcons = Math.Max(1, 1 + (60f - iconInfo.Width) / 50f);
float imageScale = appInfo.ImageScale * scaleUpTheSmallerIcons;
var transform = Matrix3x2.CreateTranslation((float)-imageBounds.X, (float)-imageBounds.Y) *
Utils.GetDisplayTransform(renderTarget.Size.ToVector2(), new Vector2((float)imageBounds.Width, (float)imageBounds.Height)) *
Matrix3x2.CreateScale(imageScale, renderTarget.Size.ToVector2() / 2);
if (iconInfo.Monochrome)
{
// Optionally convert to monochrome.
iconImage = new DiscreteTransferEffect
{
Source = new Transform2DEffect
{
Source = new LuminanceToAlphaEffect { Source = iconImage },
TransformMatrix = transform
},
RedTable = new float[] { 1 },
GreenTable = new float[] { 1 },
BlueTable = new float[] { 1 },
AlphaTable = new float[] { 0, 1 }
};
}
else
{
ds.Transform = transform;
// Optional shadow effect.
if (appInfo.AddShadow)
{
var shadow = new ShadowEffect
{
Source = iconImage,
BlurAmount = 12,
};
ds.DrawImage(shadow);
}
}
// draw the main icon image.
ds.DrawImage(iconImage);
}
// Save to a file.
using (var stream = await folder.OpenStreamForWriteAsync(iconInfo.Filename, CreationCollisionOption.ReplaceExisting))
{
await renderTarget.SaveAsync(stream.AsRandomAccessStream(), CanvasBitmapFileFormat.Png);
}
}
/// <summary>
/// Renders text into a command list and sets this as the input to the flame
/// effect graph. The effect graph must already be created before calling this method.
/// </summary>
private void SetupText(ICanvasResourceCreator resourceCreator)
{
textCommandList = new CanvasCommandList(resourceCreator);
using (var ds = textCommandList.CreateDrawingSession())
{
ds.Clear(Color.FromArgb(0, 0, 0, 0));
ds.DrawText(
text,
0,
0,
Colors.White,
new CanvasTextFormat
{
FontFamily = "Segoe UI",
FontSize = fontSize,
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Top
});
}
// Hook up the command list to the inputs of the flame effect graph.
morphology.Source = textCommandList;
composite.Sources[1] = textCommandList;
}
private void DoEffect(CanvasDrawingSession ds, Size size, float amount)
{
size.Width = size.Width - ExpandAmount;
size.Height = size.Height - ExpandAmount;
var offset = (float)(ExpandAmount / 2);
using (var textLayout = CreateTextLayout(ds, size))
using (var textCommandList = new CanvasCommandList(ds))
{
using (var textDs = textCommandList.CreateDrawingSession())
{
textDs.DrawTextLayout(textLayout, 0, 0, GlowColor);
}
glowEffectGraph.Setup(textCommandList, amount);
ds.DrawImage(glowEffectGraph.Output, offset, offset);
ds.DrawTextLayout(textLayout, offset, offset, TextColor);
}
}
private ICanvasImage CreateAlphaMask()
{
if (!AlphaMaskEffect.IsSupported)
{
return CreateNotSupportedMessage(requiresWin10_14393);
}
textLabel = requiresWin10_14393;
// Draw an alpha gradient into a command list.
var alphaGradientBrush = new CanvasRadialGradientBrush(canvas, Colors.Black, Colors.Transparent)
{
Center = bitmapTiger.Size.ToVector2() / 2,
RadiusX = (float)bitmapTiger.Size.Width,
RadiusY = (float)bitmapTiger.Size.Height
};
var alphaMask = new CanvasCommandList(canvas);
using (var drawingSession = alphaMask.CreateDrawingSession())
{
drawingSession.FillRectangle(bitmapTiger.Bounds, alphaGradientBrush);
}
// Apply the alpha mask to the tiger bitmap.
var alphaMaskEffect = new AlphaMaskEffect
{
Source = bitmapTiger,
AlphaMask = alphaMask
};
// Composite the alpha masked image on top of a background checker pattern.
var compositeEffect = new CompositeEffect
{
Sources = { CreateCheckeredBackground(), alphaMaskEffect }
};
animationFunction = elapsedTime => { };
return compositeEffect;
}
static void DrawSecondsText(CanvasDrawingSession ds, Vector2 pos, int seconds)
{
// The text is drawn via a command list so we can use DrawImage to specify a difference CanvasComposite mode.
using (var cl = new CanvasCommandList(ds))
{
using (var clds = cl.CreateDrawingSession())
{
clds.DrawText(seconds.ToString(), Vector2.Zero, Colors.White, textFormat);
}
Rect textBounds = cl.GetBounds(ds);
var offset = new Vector2((float)textBounds.Left, (float)textBounds.Top);
ds.DrawImage(cl, pos + offset, cl.GetBounds(ds), 1, CanvasImageInterpolation.NearestNeighbor, CanvasComposite.MaskInvert);
}
}
private void DoPathEffect(CanvasControl sender, CanvasDrawingSession ds )
{
using (var thBuilder = new Microsoft.Graphics.Canvas.Geometry.CanvasPathBuilder(sender))
{
var pthConverter = new PathToD2DPathGeometryConverter();
foreach(var path in _paths)
{
var offset = (float)ExpandAmount / 2;
using (var cl = new CanvasCommandList(ds))
using (var pthGeo = pthConverter.parse(path, thBuilder))
{
using (var clds = cl.CreateDrawingSession())
{
clds.FillGeometry(pthGeo,0,0, GlowColor);
}
_eg.Setup(cl, (float)GlowAmount, GlowColor);
ds.DrawImage(_eg.Output, offset, offset);
ds.FillGeometry(pthGeo,offset, offset, ((SolidColorBrush)GlowFill).Color);
}
}
}
}
private void CanvasControl_OnCreateResources(CanvasAnimatedControl sender, CanvasCreateResourcesEventArgs args)
{
//init tanks
InitTanks();
foreach (var tank in Tanks)
{
CanvasCommandList ccl = new CanvasCommandList(sender);
using (CanvasDrawingSession cds = ccl.CreateDrawingSession())
{
//draw each tank
//tank base
cds.DrawRectangle(new Rect(-tank.size / 2, -tank.size / 2, tank.size * 2, tank.size), FractionColors[tank.fraction]);
//cannon
cds.DrawRectangle(new Rect(-tank.size / 2, -tank.size / 2 + (tank.size / 1.5f), tank.size * 3, tank.size / 2), FractionColors[tank.fraction]);
//"wheels"
}
//set the effect source
tank.rotationEffect.Source = ccl;
tank.translationEffect.Source = tank.rotationEffect;
}
CanvasCommandList pccl = new CanvasCommandList(sender);
using (CanvasDrawingSession pds = pccl.CreateDrawingSession())
{
pds.DrawCircle(0, 0, 5.0f, new CanvasSolidColorBrush(pds, Colors.Yellow));
}
projectilePrototype.translationEffect = new Transform2DEffect();
projectilePrototype.translationEffect.Source = pccl;
}
public void EditRegionMask(List<Vector2> points, float zoomFactor)
{
if (regionMask == null)
{
// Demand-create our region mask image.
regionMask = new CanvasRenderTarget(SourceBitmap.Device, Parent.Size.X, Parent.Size.Y, 96);
}
else
{
// Back up the previous mask, to support undo.
previousRegionMask = currentRegionMask;
}
// Prepare an ICanvasImage holding the edit to be applied.
ICanvasImage editMask;
if (RegionSelectionMode == SelectionMode.MagicWand)
{
// Magic wand selection is already an image.
editMask = GetMagicWandMask(points, zoomFactor);
}
else
{
// Capture selection geometry into a command list.
var commandList = new CanvasCommandList(regionMask.Device);
using (var drawingSession = commandList.CreateDrawingSession())
{
// If this was just a touch without move, treat it as selecting the entire image.
var dragRange = points.Select(point => Vector2.Distance(point, points[0])).Max() * zoomFactor;
if (dragRange < 10)
{
drawingSession.Clear(Colors.White);
}
else
{
// Draw selection geometry.
var geometry = GetSelectionGeometry(drawingSession, points);
drawingSession.FillGeometry(geometry, Colors.White);
}
}
editMask = commandList;
}
// Apply the edit.
using (var drawingSession = regionMask.CreateDrawingSession())
{
CanvasComposite compositeMode;
switch (RegionSelectionOperation)
{
case SelectionOperation.Replace:
drawingSession.Clear(Colors.Transparent);
compositeMode = CanvasComposite.SourceOver;
break;
case SelectionOperation.Add:
compositeMode = CanvasComposite.SourceOver;
break;
case SelectionOperation.Subtract:
compositeMode = CanvasComposite.DestinationOut;
break;
case SelectionOperation.Invert:
compositeMode = CanvasComposite.Xor;
break;
default:
throw new NotSupportedException();
}
drawingSession.DrawImage(editMask, Vector2.Zero, regionMask.Bounds, 1, CanvasImageInterpolation.Linear, compositeMode);
}
// Back up the mask, so we can recover from lost devices.
currentRegionMask = regionMask.GetPixelBytes();
cachedRegionMask.Reset();
CanUndo = true;
}
void CreateLinearGradient(ICanvasResourceCreator resourceCreator)
{
var commandList = new CanvasCommandList(resourceCreator);
using (var drawingSession = commandList.CreateDrawingSession())
{
var brush = new CanvasLinearGradientBrush(resourceCreator, Colors.White, Colors.Black)
{
StartPoint = new Vector2(-tigerSize.X / 4, 0),
EndPoint = new Vector2(tigerSize.X * 5 / 4, 0),
};
// Expand the bounds to avoid going past the edge of the gradient as we rotate it.
var expandedBounds = new Rect((-tigerSize).ToPoint(), (tigerSize * 2).ToPoint());
drawingSession.FillRectangle(expandedBounds, brush);
}
linearGradient = new Transform2DEffect
{
Source = commandList
};
}
void CreateRadialGradient(ICanvasResourceCreator resourceCreator)
{
radialGradient = new CanvasCommandList(resourceCreator);
using (var drawingSession = radialGradient.CreateDrawingSession())
{
var sqrt2 = (float)Math.Sqrt(2);
var brush = new CanvasRadialGradientBrush(resourceCreator, Colors.White, Colors.Black)
{
Center = tigerSize / 2,
RadiusX = tigerSize.X / sqrt2,
RadiusY = tigerSize.Y / sqrt2,
};
drawingSession.FillRectangle(bitmapTiger.Bounds, brush);
}
}
void CreateLinearGradient(ICanvasResourceCreator resourceCreator)
{
var commandList = new CanvasCommandList(resourceCreator);
using (var drawingSession = commandList.CreateDrawingSession())
{
var brush = new CanvasLinearGradientBrush(resourceCreator, Colors.White, Colors.Black)
{
StartPoint = new Vector2(-tigerSize.X / 4, 0),
EndPoint = new Vector2(tigerSize.X * 5 / 4, 0),
};
drawingSession.FillRectangle(bitmapTiger.Bounds, brush);
}
// Wrap the gradient with a border effect to avoid edge artifacts as we rotate it.
linearGradient = new Transform2DEffect
{
Source = new BorderEffect
{
Source = commandList
}
};
}
ICanvasImage WrapSourceWithIntermediateImage(PerDeviceResources resources, IntermediateMode mode)
{
switch (mode)
{
case IntermediateMode.ImageEffect:
// We can either feed our graphics through an image effect...
resources.SaturationEffect.Source = GetSourceBitmap(resources) ??
WrapSourceWithIntermediateImage(resources, IntermediateMode.None);
resources.AddMessage("SaturationEffect ->\n");
return resources.SaturationEffect;
case IntermediateMode.CommandList:
var cl = new CanvasCommandList(resources.ResourceCreator);
using (var ds = cl.CreateDrawingSession())
{
DrawSourceGraphic(resources, ds, 0);
}
resources.AddMessage("CommandList ->\n");
return cl;
case IntermediateMode.ImageEffectInCommandList:
var cl2 = new CanvasCommandList(resources.ResourceCreator);
using (var ds = cl2.CreateDrawingSession())
{
ds.DrawImage(WrapSourceWithIntermediateImage(resources, IntermediateMode.ImageEffect));
}
resources.AddMessage("CommandList ->\n");
return cl2;
default:
// ... or draw them into a rendertarget.
var renderTarget = GetIntermediateRenderTarget(resources, mode);
using (var ds = renderTarget.CreateDrawingSession())
{
DrawSourceGraphic(resources, ds, 0);
}
var pixels = renderTarget.SizeInPixels;
resources.AddMessage("RenderTarget (dpi: {0}, size: {1}, pixels: {2},{3}) ->\n", renderTarget.Dpi, renderTarget.Size, pixels.Width, pixels.Height);
return renderTarget;
}
}
private void DoEffect(CanvasDrawingSession ds, Size size, float amount, Windows.UI.Color glowColor, Windows.UI.Color fillColor, double expandAmount)
{
var offset = (float)expandAmount / 2;
//using (var textLayout = CreateTextLayout(ds, size))
using (var cl = new CanvasCommandList(ds))
{
using (var clds = cl.CreateDrawingSession())
{
clds.FillRectangle(0, 0, (float)size.Width, (float)size.Height, glowColor);
}
glowEffectGraph.Setup(cl, amount);
ds.DrawImage(glowEffectGraph.Output, offset, offset);
ds.FillRectangle(offset, offset, (float)size.Width, (float)size.Height, fillColor);
}
}
/// <summary>
/// Renders text into a command list and sets this as the input to the flame
/// effect graph. The effect graph must already be created before calling this method.
/// </summary>
private void SetupText(ICanvasResourceCreator resourceCreator)
{
textCommandList = new CanvasCommandList(resourceCreator);
using (var ds = textCommandList.CreateDrawingSession())
{
ds.Clear(Colors.Transparent);
ds.DrawText(
"Windows.UI.Composition",
0,
0,
Colors.White,
new Microsoft.Graphics.Canvas.Text.CanvasTextFormat
{
FontFamily = "Segoe UI",
FontSize = 20,
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Top
});
}
// Hook up the command list to the inputs of the flame effect graph.
morphology.Source = textCommandList;
composite.Sources[1] = textCommandList;
}
static void DrawTile(CanvasDrawingSession ds, float width, float height)
{
using (var cl = new CanvasCommandList(ds))
{
using (var clds = cl.CreateDrawingSession())
{
var text = string.Format("{0}\n{1}", DateTime.Now.ToString("ddd"), DateTime.Now.ToString("HH:mm"));
var textFormat = new CanvasTextFormat()
{
FontFamily = "Segoe UI Black",
HorizontalAlignment = CanvasHorizontalAlignment.Right,
VerticalAlignment = CanvasVerticalAlignment.Center,
FontSize = 20,
LineSpacing = 20
};
clds.DrawText(text, 0, 0, Colors.White, textFormat);
}
var effect = new GaussianBlurEffect()
{
Source = cl,
BlurAmount = 1,
};
ds.Clear(Colors.Orange);
var bounds = effect.GetBounds(ds);
var ratio = bounds.Height / bounds.Width;
var destHeight = height * ratio;
ds.DrawImage(effect, new Rect(0, height / 2 - destHeight / 2, width, destHeight), bounds);
ds.DrawText(string.Format("Generated by Win2D\n{0}\n{1}", DateTime.Now.ToString("d"), DateTime.Now.ToString("t")),
12, 12, Colors.Black,
new CanvasTextFormat()
{
HorizontalAlignment = CanvasHorizontalAlignment.Left,
VerticalAlignment = CanvasVerticalAlignment.Top,
FontSize = 12
});
}
}
private async void DoStreamsEffect(CanvasControl sender, CanvasDrawingSession ds)
{
foreach (var stream in _streams)
{
var offset = (float)ExpandAmount / 2;
using (var cl = new CanvasCommandList(ds))
{
using (var clds = cl.CreateDrawingSession())
{
stream.Seek(0);
var canvasbmp = await CanvasBitmap.LoadAsync(sender, stream);
clds.DrawImage(canvasbmp, 0, 0);
}
_eg.Setup(cl, (float)GlowAmount, GlowColor);
ds.DrawImage(_eg.Output, offset, offset);
}
}
}
private async void OnSaveAsClicked(object sender, RoutedEventArgs e)
{
// the button should be disabled if there's no bitmap loaded
Debug.Assert(virtualBitmap != null);
var picker = new FileSavePicker();
picker.FileTypeChoices.Add("Jpegs", new List<string>() { ".jpg" });
var file = await picker.PickSaveFileAsync();
if (file == null)
return;
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
// Stamp a big "Win2D" over the image before we save it, to demonstrate
// that the image really has been processed.
var device = CanvasDevice.GetSharedDevice();
var bounds = virtualBitmap.Bounds;
var text = new CanvasCommandList(device);
using (var ds = text.CreateDrawingSession())
{
ds.DrawText("Win2D", bounds, Colors.White,
new CanvasTextFormat()
{
VerticalAlignment = CanvasVerticalAlignment.Center,
HorizontalAlignment = CanvasHorizontalAlignment.Center,
FontFamily = "Comic Sans MS",
FontSize = (float)(bounds.Height / 4)
});
}
var effect = new BlendEffect()
{
Background = virtualBitmap,
Foreground = text,
Mode = BlendEffectMode.Difference
};
try
{
await CanvasImage.SaveAsync(effect, bounds, 96, device, stream, CanvasBitmapFileFormat.Jpeg);
var message = string.Format("Finished saving '{0}'", file.Name);
var messageBox = new MessageDialog(message, "Virtual Bitmap Example").ShowAsync();
}
catch
{
var message = string.Format("Error saving '{0}'", file.Name);
var messageBox = new MessageDialog(message, "Virtual Bitmap Example").ShowAsync();
}
}
}
private void Canvas_Draw(ICanvasAnimatedControl sender, CanvasAnimatedDrawEventArgs args)
{
var cl = new CanvasCommandList(sender);
using (var clds = cl.CreateDrawingSession())
{
if (_bytes != null)
{
using (var bitmap = CanvasBitmap.CreateFromBytes(sender, _bytes, _widthInPixels, _heightInPixels, DirectXPixelFormat.B8G8R8A8UIntNormalized, _dpi))
{
clds.DrawImage(bitmap);
}
clds.FillRectangle(0, 0, _widthInPixels, _heightInPixels, _maskColor);
}
else
{
clds.FillRectangle(0, 0, (float)sender.Size.Width, (float)sender.Size.Height, _maskColor);
}
}
_effect.Source = cl;
args.DrawingSession.DrawImage(_effect);
}
private ICanvasImage CreateNotSupportedMessage(string message)
{
var commandList = new CanvasCommandList(canvas);
var textFormat = new CanvasTextFormat
{
FontSize = 16,
HorizontalAlignment = CanvasHorizontalAlignment.Center,
VerticalAlignment = CanvasVerticalAlignment.Center
};
using (var ds = commandList.CreateDrawingSession())
{
ds.DrawText(message, bitmapTiger.Bounds, Colors.Red, textFormat);
}
animationFunction = elapsedTime => { };
return commandList;
}
static void ValidateCanDrawImage(CanvasDevice device, ICanvasImage image)
{
using (var commandList = new CanvasCommandList(device))
using (var drawingSession = commandList.CreateDrawingSession())
{
drawingSession.DrawImage(image);
}
}
private CanvasCommandList GenerateTextDisplay(ICanvasResourceCreator resourceCreator, float width, float height)
{
var cl = new CanvasCommandList(resourceCreator);
using (var ds = cl.CreateDrawingSession())
{
float top = height - offset;
float center = width / 4.0f;
float symbolPos = center - 5.0f;
float labelPos = center + 5.0f;
for (int i = firstLine; i < lastLine; ++i)
{
float y = top + lineHeight * i;
int index = i;
if (index < characters.Length)
{
ds.DrawText(string.Format("{0}", (char)characters[index].Code), symbolPos, y, Colors.White, symbolText);
ds.DrawText(string.Format("0x{0:X} - {1}", characters[index].Code, characters[index].Label), labelPos, y, Colors.White, labelText);
}
}
}
return cl;
}
void DrawShadow(CanvasControl canvasCtrl, CanvasDrawingSession drawSession, List<ShadowParam> shadowParams)
{
var canvasCommandList = new CanvasCommandList(canvasCtrl);
var content = _contentPresenter.Content as FrameworkElement;
var contentWidth = content.ActualWidth + content.Margin.Left + content.Margin.Right;
var contentHeight = content.ActualHeight + content.Margin.Top + content.Margin.Bottom;
var radius = GetActualCornerRadius(contentWidth);
double maxOffset_Y = shadowParams.Max(param => param.Offset_Y);
_shadowCanvas.VerticalAlignment = content.VerticalAlignment;
_shadowCanvas.HorizontalAlignment = content.HorizontalAlignment;
using (var ds = canvasCommandList.CreateDrawingSession())
{
ds.FillRoundedRectangle(new Rect(0, 0, contentWidth, contentHeight), radius, radius, Color.FromArgb(255, 0, 0, 0));
}
CompositeEffect compositeEffect = CreateEffects(shadowParams, canvasCommandList);
var bound = compositeEffect.GetBounds(drawSession);
double shadowWidth = Math.Abs(bound.X);
double shadowHeight = Math.Abs(bound.Y);
UpdateLayout(maxOffset_Y, bound, shadowWidth, shadowHeight);
DrawEffect(drawSession, compositeEffect, shadowWidth, shadowHeight);
}
