コード例 #1
0
ファイル: canvas_impl.cs プロジェクト: zhw741852/UIWidgets
        void _drawWithMaskFilter(Rect meshBounds, Action <Paint> drawAction, Paint paint, MaskFilter maskFilter)
        {
            var layer      = this._currentLayer;
            var clipBounds = layer.layerBounds;

            Rect stackBounds;
            bool iior;

            layer.clipStack.getBounds(out stackBounds, out iior);

            if (stackBounds != null)
            {
                clipBounds = clipBounds.intersect(stackBounds);
            }

            if (clipBounds.isEmpty)
            {
                return;
            }

            var   state = layer.currentState;
            float sigma = state.scale * maskFilter.sigma;

            if (sigma <= 0)
            {
                return;
            }

            float sigma3     = 3 * sigma;
            var   maskBounds = meshBounds.inflate(sigma3);

            maskBounds = maskBounds.intersect(clipBounds.inflate(sigma3));
            if (maskBounds.isEmpty)
            {
                return;
            }

            var maskLayer = this._createMaskLayer(layer, maskBounds, drawAction, paint);

            var blurLayer = this._createBlurLayer(maskLayer, sigma, layer);

            var blurMesh = ImageMeshGenerator.imageMesh(null, Rect.one, maskBounds);

            if (!this._applyClip(blurMesh.bounds))
            {
                return;
            }

            layer.draws.Add(CanvasShader.texRT(layer, paint, blurMesh, blurLayer));
        }
コード例 #2
0
        public static void debugPaintPadding(Canvas canvas, Rect outerRect, Rect innerRect, float outlineWidth = 2.0f)
        {
            assert(() => {
                if (innerRect != null && !innerRect.isEmpty)
                {
                    _debugDrawDoubleRect(canvas, outerRect, innerRect, new Color(0x900090FF));
                    _debugDrawDoubleRect(canvas, innerRect.inflate(outlineWidth).intersect(outerRect), innerRect,
                                         new Color(0xFF0090FF));
                }
                else
                {
                    Paint paint = new Paint();
                    paint.color = new Color(0x90909090);
                    canvas.drawRect(outerRect, paint);
                }

                return(true);
            });
        }