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C# Context.Transform方法代码示例

本文整理汇总了C#中Cairo.Context.Transform方法的典型用法代码示例。如果您正苦于以下问题:C# Context.Transform方法的具体用法?C# Context.Transform怎么用?C# Context.Transform使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Cairo.Context的用法示例。


在下文中一共展示了Context.Transform方法的9个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: CreateImageBrush

        public static SurfacePattern CreateImageBrush(ImageBrush brush, Size targetSize)
        {
            if (brush.Source == null)
            {
                return null;
            }

            // TODO: This is directly ported from Direct2D and could probably be made more
            // efficient on cairo by taking advantage of the fact that cairo has Extend.None.
            var image = ((BitmapImpl)brush.Source.PlatformImpl).Surface;
            var imageSize = new Size(brush.Source.PixelWidth, brush.Source.PixelHeight);
            var tileMode = brush.TileMode;
            var sourceRect = brush.SourceRect.ToPixels(imageSize);
            var destinationRect = brush.DestinationRect.ToPixels(targetSize);
            var scale = brush.Stretch.CalculateScaling(destinationRect.Size, sourceRect.Size);
            var translate = CalculateTranslate(brush, sourceRect, destinationRect, scale);
            var intermediateSize = CalculateIntermediateSize(tileMode, targetSize, destinationRect.Size);

			var intermediate = new ImageSurface (Format.ARGB32, (int)intermediateSize.Width, (int)intermediateSize.Height);
            using (var context = new Context(intermediate))
            {
                Rect drawRect;
                var transform = CalculateIntermediateTransform(
                    tileMode,
                    sourceRect,
                    destinationRect,
                    scale,
                    translate,
                    out drawRect);
                context.Rectangle(drawRect.ToCairo());
                context.Clip();
                context.Transform(transform.ToCairo());
                Gdk.CairoHelper.SetSourcePixbuf(context, image, 0, 0);
                context.Rectangle(0, 0, imageSize.Width, imageSize.Height);
                context.Fill();

                var result = new SurfacePattern(intermediate);

                if ((brush.TileMode & TileMode.FlipXY) != 0)
                {
                    // TODO: Currently always FlipXY as that's all cairo supports natively. 
                    // Support separate FlipX and FlipY by drawing flipped images to intermediate
                    // surface.
                    result.Extend = Extend.Reflect;
                }
                else
                {
                    result.Extend = Extend.Repeat;
                }

                if (brush.TileMode != TileMode.None)
                {
                    var matrix = result.Matrix;
                    matrix.InitTranslate(-destinationRect.X, -destinationRect.Y);
                    result.Matrix = matrix;
                }

                return result;
            }
        }
开发者ID:shahid-pk,项目名称:Perspex,代码行数:60,代码来源:TileBrushes.cs

示例2: CreateVisualBrush

        public static SurfacePattern CreateVisualBrush(VisualBrush brush, Size targetSize)
        {
            var visual = brush.Visual;

            if (visual == null)
            {
                return null;
            }

            var layoutable = visual as ILayoutable;

            if (layoutable?.IsArrangeValid == false)
            {
                layoutable.Measure(Size.Infinity);
                layoutable.Arrange(new Rect(layoutable.DesiredSize));
            }

            // TODO: This is directly ported from Direct2D and could probably be made more
            // efficient on cairo by taking advantage of the fact that cairo has Extend.None.
            var tileMode = brush.TileMode;
            var sourceRect = brush.SourceRect.ToPixels(layoutable.Bounds.Size);
            var destinationRect = brush.DestinationRect.ToPixels(targetSize);
            var scale = brush.Stretch.CalculateScaling(destinationRect.Size, sourceRect.Size);
            var translate = CalculateTranslate(brush, sourceRect, destinationRect, scale);
            var intermediateSize = CalculateIntermediateSize(tileMode, targetSize, destinationRect.Size);
            
			using (var intermediate = new ImageSurface(Format.ARGB32, (int)intermediateSize.Width, (int)intermediateSize.Height))
            using (var context = new Context(intermediate))
            {
                Rect drawRect;
                var transform = CalculateIntermediateTransform(
                    tileMode,
                    sourceRect,
                    destinationRect,
                    scale,
                    translate,
                    out drawRect);
                var renderer = new Renderer(intermediate);

                context.Rectangle(drawRect.ToCairo());
                context.Clip();
                context.Transform(transform.ToCairo());
                renderer.Render(visual, new PlatformHandle(IntPtr.Zero, "RTB"), transform, drawRect);

                var result = new SurfacePattern(intermediate);

                if ((brush.TileMode & TileMode.FlipXY) != 0)
                {
                    // TODO: Currently always FlipXY as that's all cairo supports natively. 
                    // Support separate FlipX and FlipY by drawing flipped images to intermediate
                    // surface.
                    result.Extend = Extend.Reflect;
                }
                else
                {
                    result.Extend = Extend.Repeat;
                }

                if (brush.TileMode != TileMode.None)
                {
                    var matrix = result.Matrix;
                    matrix.InitTranslate(-destinationRect.X, -destinationRect.Y);
                    result.Matrix = matrix;
                }

                return result;
            }
        }
开发者ID:shahid-pk,项目名称:Perspex,代码行数:68,代码来源:TileBrushes.cs

示例3: DrawWithOperator

        public void DrawWithOperator(Context ctx, ImageSurface surface, Operator op, double opacity = 1.0, bool transform = true)
        {
            ctx.Save ();

            if (transform)
                ctx.Transform (Transform);
            ctx.Operator = op;
            ctx.SetSourceSurface (surface, 0, 0);
            if (opacity >= 1.0)
                ctx.Paint ();
            else
                ctx.PaintWithAlpha (opacity);
            ctx.Restore ();
        }
开发者ID:PintaProject,项目名称:Pinta,代码行数:14,代码来源:Layer.cs

示例4: CreateScene

        private Surface CreateScene (Cairo.Context window_cr, ImageSurface image, int reflect)
        {
            Surface surface = window_cr.Target.CreateSimilar (window_cr.Target.Content,
                image.Width, image.Height + reflect);
            Cairo.Context cr = new Context (surface);

            cr.Save ();

            cr.SetSource (image);
            cr.Paint ();

            cr.Rectangle (0, image.Height, image.Width, reflect);
            cr.Clip ();

            Matrix matrix = new Matrix ();
            matrix.InitScale (1, -1);
            matrix.Translate (0, -(2 * image.Height) + 1);
            cr.Transform (matrix);

            cr.SetSource (image);
            cr.Paint ();

            cr.Restore ();

            Color bg_transparent = BackgroundColor;
            bg_transparent.A = 0.65;

            LinearGradient mask = new LinearGradient (0, image.Height, 0, image.Height + reflect);
            mask.AddColorStop (0, bg_transparent);
            mask.AddColorStop (1, BackgroundColor);

            cr.Rectangle (0, image.Height, image.Width, reflect);
            cr.Pattern = mask;
            cr.Fill ();

            ((IDisposable)cr).Dispose ();
            return surface;
        }
开发者ID:gclark916,项目名称:banshee,代码行数:38,代码来源:LargeTrackInfoDisplay.cs

示例5: Draw

        public void Draw(Context ctx, ImageSurface surface, double opacity, bool transform = true)
        {
            ctx.Save ();

            if (transform)
                ctx.Transform (Transform);

            ctx.BlendSurface (surface, BlendMode, opacity);

            ctx.Restore ();
        }
开发者ID:PintaProject,项目名称:Pinta,代码行数:11,代码来源:Layer.cs

示例6: ApplyTransform

        public virtual void ApplyTransform(Matrix xform, Size new_size)
        {
            var old_size = PintaCore.Workspace.ImageSize;
            var dest = new ImageSurface (Format.ARGB32, new_size.Width, new_size.Height);
            using (var g = new Context (dest))
            {
                g.Transform (xform);
                g.SetSource (Surface);
                g.Paint ();
            }

            Surface old = Surface;
            Surface = dest;
            old.Dispose ();
        }
开发者ID:PintaProject,项目名称:Pinta,代码行数:15,代码来源:Layer.cs

示例7: CreateScene

        private Surface CreateScene(Cairo.Context window_cr, ImageSurface image, int reflect)
        {
            var target = window_cr.GetTarget ();
            Surface surface = target.CreateSimilar (target.Content,
                image.Width, image.Height + reflect);
            using (var cr = new Context (surface)) {

                cr.Save ();

                cr.SetSource (image);
                cr.Paint ();

                cr.Rectangle (0, image.Height, image.Width, reflect);
                cr.Clip ();

                Matrix matrix = new Matrix ();
                matrix.InitScale (1, -1);
                matrix.Translate (0, -(2 * image.Height) + 1);
                cr.Transform (matrix);

                cr.SetSource (image);
                cr.Paint ();

                cr.Restore ();

                Color bg_transparent = BackgroundColor;
                bg_transparent.A = 0.65;

                using (var mask = new LinearGradient (0, image.Height, 0, image.Height + reflect)) {
                    mask.AddColorStop (0, bg_transparent);
                    mask.AddColorStop (1, BackgroundColor);

                    cr.Rectangle (0, image.Height, image.Width, reflect);
                    cr.SetSource (mask);
                    cr.Fill ();
                }

            }
            return surface;
        }
开发者ID:dufoli,项目名称:banshee,代码行数:40,代码来源:LargeTrackInfoDisplay.cs

示例8: RenderNode

        void RenderNode(Node current, Context context)
        {
            if (current.Renderer == null)
                AssignRenderers (current);

            var cairoRenderer = current.Renderer as ICairoRenderer;
            if (cairoRenderer == null)
                return;

            context.Save ();
            context.Transform (current.GetTransform ());
            cairoRenderer.Render (current, context);

            context.Save ();

            if (cairoRenderer.Clip)
                cairoRenderer.ClipChildren (current, context);

            if (current.Children != null)
                current.Children.ForEach (n => RenderNode (n, context));

            context.Restore ();

            if (cairoRenderer.Post)
                cairoRenderer.PostRender (current, context);

            context.Restore ();
        }
开发者ID:Clancey,项目名称:Canvas,代码行数:28,代码来源:Engine.cs

示例9: Draw

 public void Draw(Context ctx, ImageSurface surface, double opacity)
 {
     ctx.Save();
     ctx.Transform(Transform);
     ctx.SetSourceSurface(surface, 0, 0);
     ctx.PaintWithAlpha(opacity);
     ctx.Restore();
 }
开发者ID:Kharevich,项目名称:Pinta,代码行数:8,代码来源:Layer.cs


注:本文中的Cairo.Context.Transform方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。