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source: branches/HeuristicLab.Problems.GrammaticalOptimization/SharpVectorRenderingWpf/Wpf/WpfMarkerRendering.cs @ 13777

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Last change on this file since 13777 was 12762, checked in by aballeit, 9 years ago
#2283 GUI updates, Tree-chart, MCTS Version 2 (prune leaves)
File size: 16.0 KB

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1	using System;
2	using System.Xml;
3	using System.Linq;
4	using System.Text;
5	using System.Diagnostics;
6	using System.Collections.Generic;
7
8	using System.Windows;
9	using System.Windows.Media;
10
11	using SharpVectors.Dom.Svg;
12
13	namespace SharpVectors.Renderers.Wpf
14	{
15	public enum SvgMarkerPosition
16	{
17	Start,
18	Mid,
19	End
20	}
21
22	public sealed class WpfMarkerRendering : WpfRendering
23	{
24	#region Private Fields
25
26	private Matrix _matrix;
27	private DrawingGroup _drawGroup;
28
29	#endregion
30
31	#region Constructors and Destructor
32
33	public WpfMarkerRendering(SvgElement element)
34	: base(element)
35	{
36	}
37
38	#endregion
39
40	#region Public Methods
41
42	// disable default rendering
43	public override void BeforeRender(WpfDrawingRenderer renderer)
44	{
45	base.BeforeRender(renderer);
46
47	_matrix = Matrix.Identity;
48
49	WpfDrawingContext context = renderer.Context;
50	_drawGroup = new DrawingGroup();
51
52	//string elementId = this.GetElementName();
53	//if (!String.IsNullOrEmpty(elementId))
54	//{
55	// _drawGroup.SetValue(FrameworkElement.NameProperty, elementId);
56	//}
57
58	DrawingGroup currentGroup = context.Peek();
59
60	if (currentGroup == null)
61	{
62	throw new InvalidOperationException("An existing group is expected.");
63	}
64
65	currentGroup.Children.Add(_drawGroup);
66	context.Push(_drawGroup);
67	}
68
69	public override void Render(WpfDrawingRenderer renderer)
70	{
71	if (_drawGroup != null)
72	{
73	if (!_matrix.IsIdentity)
74	{
75	_drawGroup.Transform = new MatrixTransform(_matrix);
76	}
77
78	Geometry clipGeom = this.ClipGeometry;
79	if (clipGeom != null)
80	{
81	_drawGroup.ClipGeometry = clipGeom;
82	}
83
84	//Transform transform = this.Transform;
85	//if (transform != null)
86	//{
87	// _drawGroup.Transform = transform;
88	//}
89	}
90
91	base.Render(renderer);
92	}
93
94	public override void AfterRender(WpfDrawingRenderer renderer)
95	{
96	Debug.Assert(_drawGroup != null);
97
98	WpfDrawingContext context = renderer.Context;
99
100	DrawingGroup currentGroup = context.Peek();
101
102	if (currentGroup == null \|\| currentGroup != _drawGroup)
103	{
104	throw new InvalidOperationException("An existing group is expected.");
105	}
106
107	context.Pop();
108
109	base.AfterRender(renderer);
110	}
111
112	public static Matrix GetTransformMatrix(SvgElement element)
113	{
114	ISvgTransformable transElm = element as ISvgTransformable;
115	if (transElm == null)
116	return Matrix.Identity;
117
118	SvgTransformList svgTList = (SvgTransformList)transElm.Transform.AnimVal;
119	//SvgTransform svgTransform = (SvgTransform)svgTList.Consolidate();
120	SvgMatrix svgMatrix = ((SvgTransformList)transElm.Transform.AnimVal).TotalMatrix;
121
122	return new Matrix(svgMatrix.A, svgMatrix.B, svgMatrix.C,
123	svgMatrix.D, svgMatrix.E, svgMatrix.F);
124	}
125
126	public void RenderMarker0(WpfDrawingRenderer renderer, WpfDrawingContext gr,
127	SvgMarkerPosition markerPos, SvgStyleableElement refElement)
128	{
129	//PathGeometry g;
130	//g.GetPointAtFractionLength(
131
132	ISharpMarkerHost markerHostElm = (ISharpMarkerHost)refElement;
133	SvgMarkerElement markerElm = (SvgMarkerElement)_svgElement;
134
135	SvgPointF[] vertexPositions = markerHostElm.MarkerPositions;
136	int start;
137	int len;
138
139	// Choose which part of the position array to use
140	switch (markerPos)
141	{
142	case SvgMarkerPosition.Start:
143	start = 0;
144	len = 1;
145	break;
146	case SvgMarkerPosition.Mid:
147	start = 1;
148	len = vertexPositions.Length - 2;
149	break;
150	default:
151	// == MarkerPosition.End
152	start = vertexPositions.Length - 1;
153	len = 1;
154	break;
155	}
156
157	for (int i = start; i < start + len; i++)
158	{
159	SvgPointF point = vertexPositions[i];
160
161	Matrix m = GetTransformMatrix(_svgElement);
162
163	//GraphicsContainer gc = gr.BeginContainer();
164
165	this.BeforeRender(renderer);
166
167	//gr.TranslateTransform(point.X, point.Y);
168
169	//PAUL:
170	//m.Translate(point.X, point.Y);
171
172	if (markerElm.OrientType.AnimVal.Equals(SvgMarkerOrient.Angle))
173	{
174	m.Rotate(markerElm.OrientAngle.AnimVal.Value);
175	//gr.RotateTransform((double)markerElm.OrientAngle.AnimVal.Value);
176	}
177	else
178	{
179	double angle;
180
181	switch (markerPos)
182	{
183	case SvgMarkerPosition.Start:
184	angle = markerHostElm.GetStartAngle(i + 1);
185	break;
186	case SvgMarkerPosition.Mid:
187	//angle = (markerHostElm.GetEndAngle(i) + markerHostElm.GetStartAngle(i + 1)) / 2;
188	angle = SvgNumber.CalcAngleBisection(markerHostElm.GetEndAngle(i), markerHostElm.GetStartAngle(i + 1));
189	break;
190	default:
191	angle = markerHostElm.GetEndAngle(i);
192	break;
193	}
194	//gr.RotateTransform(angle);
195	m.Rotate(angle);
196	}
197
198	if (markerElm.MarkerUnits.AnimVal.Equals(SvgMarkerUnit.StrokeWidth))
199	{
200	string propValue = refElement.GetPropertyValue("stroke-width");
201	if (propValue.Length == 0)
202	propValue = "1";
203
204	SvgLength strokeWidthLength = new SvgLength("stroke-width", propValue, refElement, SvgLengthDirection.Viewport);
205	double strokeWidth = strokeWidthLength.Value;
206	//gr.ScaleTransform(strokeWidth, strokeWidth);
207	m.Scale(strokeWidth, strokeWidth);
208	}
209
210	SvgPreserveAspectRatio spar = (SvgPreserveAspectRatio)markerElm.PreserveAspectRatio.AnimVal;
211	double[] translateAndScale = spar.FitToViewBox(
212	(SvgRect)markerElm.ViewBox.AnimVal, new SvgRect(0, 0,
213	markerElm.MarkerWidth.AnimVal.Value, markerElm.MarkerHeight.AnimVal.Value));
214
215
216	//PAUL:
217	//m.Translate(-(double)markerElm.RefX.AnimVal.Value * translateAndScale[2], -(double)markerElm.RefY.AnimVal.Value * translateAndScale[3]);
218
219	//PAUL:
220	m.Scale(translateAndScale[2], translateAndScale[3]);
221	m.Translate(point.X, point.Y);
222
223	//Matrix oldTransform = TransformMatrix;
224	//TransformMatrix = m;
225	//try
226	//{
227	//newTransform.Append(m);
228	//TransformGroup tg = new TransformGroup();
229
230	//renderer.Canvas.re
231
232	//gr.TranslateTransform(
233	// -(double)markerElm.RefX.AnimVal.Value * translateAndScale[2],
234	// -(double)markerElm.RefY.AnimVal.Value * translateAndScale[3]
235	// );
236
237	//gr.ScaleTransform(translateAndScale[2], translateAndScale[3]);
238
239	renderer.RenderChildren(markerElm);
240	// markerElm.RenderChildren(renderer);
241	//}
242	//finally
243	//{
244	// TransformMatrix = oldTransform;
245	//}
246	// //gr.EndContainer(gc);
247
248	_matrix = m;
249	this.Render(renderer);
250
251	//gr.EndContainer(gc);
252
253	this.AfterRender(renderer);
254	}
255	}
256
257	public void RenderMarker(WpfDrawingRenderer renderer, WpfDrawingContext gr,
258	SvgMarkerPosition markerPos, SvgStyleableElement refElement)
259	{
260	ISharpMarkerHost markerHostElm = (ISharpMarkerHost)refElement;
261	SvgMarkerElement markerElm = (SvgMarkerElement)_svgElement;
262
263	SvgPointF[] vertexPositions = markerHostElm.MarkerPositions;
264	int start;
265	int len;
266
267	// Choose which part of the position array to use
268	switch (markerPos)
269	{
270	case SvgMarkerPosition.Start:
271	start = 0;
272	len = 1;
273	break;
274	case SvgMarkerPosition.Mid:
275	start = 1;
276	len = vertexPositions.Length - 2;
277	break;
278	default:
279	// == MarkerPosition.End
280	start = vertexPositions.Length - 1;
281	len = 1;
282	break;
283	}
284
285	for (int i = start; i < start + len; i++)
286	{
287	SvgPointF point = vertexPositions[i];
288
289	//GdiGraphicsContainer gc = gr.BeginContainer();
290
291	this.BeforeRender(renderer);
292
293	//Matrix matrix = Matrix.Identity;
294
295	Matrix matrix = GetTransformMatrix(_svgElement);
296
297	if (markerElm.OrientType.AnimVal.Equals(SvgMarkerOrient.Angle))
298	{
299	matrix.Rotate(markerElm.OrientAngle.AnimVal.Value);
300	}
301	else
302	{
303	double angle = 0;
304
305	switch (markerPos)
306	{
307	case SvgMarkerPosition.Start:
308	angle = markerHostElm.GetStartAngle(i + 1);
309	break;
310	case SvgMarkerPosition.Mid:
311	//angle = (markerHostElm.GetEndAngle(i) + markerHostElm.GetStartAngle(i + 1)) / 2;
312	angle = SvgNumber.CalcAngleBisection(markerHostElm.GetEndAngle(i), markerHostElm.GetStartAngle(i + 1));
313	break;
314	default:
315	angle = markerHostElm.GetEndAngle(i);
316	break;
317	}
318	matrix.Rotate(angle);
319	}
320
321	if (markerElm.MarkerUnits.AnimVal.Equals(SvgMarkerUnit.StrokeWidth))
322	{
323	SvgLength strokeWidthLength = new SvgLength(refElement,
324	"stroke-width", SvgLengthSource.Css, SvgLengthDirection.Viewport, "1");
325	double strokeWidth = strokeWidthLength.Value;
326	matrix.Scale(strokeWidth, strokeWidth);
327	}
328
329	SvgPreserveAspectRatio spar =
330	(SvgPreserveAspectRatio)markerElm.PreserveAspectRatio.AnimVal;
331	double[] translateAndScale = spar.FitToViewBox((SvgRect)markerElm.ViewBox.AnimVal,
332	new SvgRect(0, 0, markerElm.MarkerWidth.AnimVal.Value,
333	markerElm.MarkerHeight.AnimVal.Value));
334
335
336	matrix.Translate(-markerElm.RefX.AnimVal.Value * translateAndScale[2],
337	-markerElm.RefY.AnimVal.Value * translateAndScale[3]);
338
339	matrix.Scale(translateAndScale[2], translateAndScale[3]);
340
341	matrix.Translate(point.X, point.Y);
342
343	_matrix = matrix;
344	this.Render(renderer);
345
346	//Clip(gr);
347
348	renderer.RenderChildren(markerElm);
349
350	//gr.EndContainer(gc);
351
352	this.AfterRender(renderer);
353	}
354	}
355
356	public void RenderMarkerEx0(WpfDrawingRenderer renderer, WpfDrawingContext gr,
357	SvgMarkerPosition markerPos, SvgStyleableElement refElement)
358	{
359	//ISharpMarkerHost markerHostElm = (ISharpMarkerHost)refElement;
360	//SvgMarkerElement markerElm = (SvgMarkerElement)element;
361
362	//SvgPointF[] vertexPositions = markerHostElm.MarkerPositions;
363	//int start;
364	//int len;
365
366	//// Choose which part of the position array to use
367	//switch (markerPos)
368	//{
369	// case SvgMarkerPosition.Start:
370	// start = 0;
371	// len = 1;
372	// break;
373	// case SvgMarkerPosition.Mid:
374	// start = 1;
375	// len = vertexPositions.Length - 2;
376	// break;
377	// default:
378	// // == MarkerPosition.End
379	// start = vertexPositions.Length - 1;
380	// len = 1;
381	// break;
382	//}
383
384	//for (int i = start; i < start + len; i++)
385	//{
386	// SvgPointF point = vertexPositions[i];
387
388	// GdiGraphicsContainer gc = gr.BeginContainer();
389
390	// gr.TranslateTransform(point.X, point.Y);
391
392	// if (markerElm.OrientType.AnimVal.Equals(SvgMarkerOrient.Angle))
393	// {
394	// gr.RotateTransform((float)markerElm.OrientAngle.AnimVal.Value);
395	// }
396	// else
397	// {
398	// float angle;
399
400	// switch (markerPos)
401	// {
402	// case SvgMarkerPosition.Start:
403	// angle = markerHostElm.GetStartAngle(i + 1);
404	// break;
405	// case SvgMarkerPosition.Mid:
406	// //angle = (markerHostElm.GetEndAngle(i) + markerHostElm.GetStartAngle(i + 1)) / 2;
407	// angle = SvgNumber.CalcAngleBisection(markerHostElm.GetEndAngle(i), markerHostElm.GetStartAngle(i + 1));
408	// break;
409	// default:
410	// angle = markerHostElm.GetEndAngle(i);
411	// break;
412	// }
413	// gr.RotateTransform(angle);
414	// }
415
416	// if (markerElm.MarkerUnits.AnimVal.Equals(SvgMarkerUnit.StrokeWidth))
417	// {
418	// SvgLength strokeWidthLength = new SvgLength(refElement,
419	// "stroke-width", SvgLengthSource.Css, SvgLengthDirection.Viewport, "1");
420	// float strokeWidth = (float)strokeWidthLength.Value;
421	// gr.ScaleTransform(strokeWidth, strokeWidth);
422	// }
423
424	// SvgPreserveAspectRatio spar =
425	// (SvgPreserveAspectRatio)markerElm.PreserveAspectRatio.AnimVal;
426	// float[] translateAndScale = spar.FitToViewBox((SvgRect)markerElm.ViewBox.AnimVal,
427	// new SvgRect(0, 0, markerElm.MarkerWidth.AnimVal.Value,
428	// markerElm.MarkerHeight.AnimVal.Value));
429
430
431	// gr.TranslateTransform(-(float)markerElm.RefX.AnimVal.Value * translateAndScale[2],
432	// -(float)markerElm.RefY.AnimVal.Value * translateAndScale[3]);
433
434	// gr.ScaleTransform(translateAndScale[2], translateAndScale[3]);
435
436	// Clip(gr);
437
438	// renderer.RenderChildren(markerElm);
439
440	// gr.EndContainer(gc);
441	//}
442	}
443
444	#endregion
445	}
446	}

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