/// <summary> /// Before a shape is selected, moving the mouse over a shape will highlight that shape by changing /// its appearance. This tests features to determine the first feature to qualify as the highlight. /// </summary> /// <param name="e">The GeoMouseArgs parameter contains information about the mouse location /// and geographic coordinates.</param> /// <returns>A value indicating whether the shape was successfully highlighted.</returns> private bool ShapeHighlight(GeoMouseArgs e) { if (e == null) { throw new ArgumentNullException("e", "e is null."); } Rectangle mouseRect = new Rectangle(_mousePosition.X - 3, _mousePosition.Y - 3, 6, 6); Extent ext = Map.PixelToProj(mouseRect); IPolygon env = ext.ToEnvelope().ToPolygon(); bool requiresInvalidate = false; foreach (IFeature feature in _featureSet.Features) { if (_featureSet.FeatureType == FeatureType.Point || _featureSet.FeatureType == FeatureType.MultiPoint) { MapPointLayer mpl = _layer as MapPointLayer; if (mpl != null) { int w = 3; int h = 3; PointCategory pc = mpl.GetCategory(feature) as PointCategory; if (pc != null) { if (pc.Symbolizer.ScaleMode != ScaleMode.Geographic) { Size2D size = pc.Symbolizer.GetSize(); w = (int)size.Width; h = (int)size.Height; } } _imageRect = new Rectangle(e.Location.X - (w / 2), e.Location.Y - (h / 2), w, h); if (_imageRect.Contains(Map.ProjToPixel(feature.Coordinates[0]))) { _activeFeature = feature; _oldCategory = mpl.GetCategory(feature); if (_selectedCategory == null) { _selectedCategory = _oldCategory.Copy(); _selectedCategory.SetColor(Color.Red); _selectedCategory.LegendItemVisible = false; } mpl.SetCategory(_activeFeature, _selectedCategory); } } requiresInvalidate = true; } else { if (feature.Intersects(env)) { _activeFeature = feature; _oldCategory = _layer.GetCategory(_activeFeature); if (_featureSet.FeatureType == FeatureType.Polygon) { IPolygonCategory pc = _activeCategory as IPolygonCategory; if (pc == null) { _activeCategory = new PolygonCategory(Color.FromArgb(55, 255, 0, 0), Color.Red, 1) { LegendItemVisible = false }; } } if (_featureSet.FeatureType == FeatureType.Line) { ILineCategory pc = _activeCategory as ILineCategory; if (pc == null) { _activeCategory = new LineCategory(Color.Red, 3) { LegendItemVisible = false }; } } _layer.SetCategory(_activeFeature, _activeCategory); requiresInvalidate = true; } } } return(requiresInvalidate); }
/// <inheritdoc /> protected override void OnMouseDown(GeoMouseArgs e) { if (e.Button == MouseButtons.Left || e.Button == MouseButtons.Right) { _mousePosition = e.Location; if (_dragging) { if (e.Button == MouseButtons.Right) { _dragging = false; Map.Invalidate(); Map.IsBusy = false; } } else { if (_selectedFeature != null) { Rectangle mouseRect = new Rectangle(_mousePosition.X - 3, _mousePosition.Y - 3, 6, 6); Envelope env = Map.PixelToProj(mouseRect).ToEnvelope(); if (CheckForVertexDrag(e)) { return; } // No vertex selection has occured. if (!_selectedFeature.Geometry.Intersects(env.ToPolygon())) { // We are clicking down outside of the given polygon, so clear our selected feature DeselectFeature(); return; } } if (_activeFeature != null) { // Don't start dragging a vertices right away for polygons and lines. // First you select the polygon, which displays the vertices, then they can be moved. if (_featureSet.FeatureType == FeatureType.Polygon) { _selectedFeature = _activeFeature; _activeFeature = null; IPolygonCategory sc = _selectedCategory as IPolygonCategory; if (sc == null) { _selectedCategory = new PolygonCategory(Color.FromArgb(55, 0, 255, 255), Color.Blue, 1) { LegendItemVisible = false }; } _layer.SetCategory(_selectedFeature, _selectedCategory); } else if (_featureSet.FeatureType == FeatureType.Line) { _selectedFeature = _activeFeature; _activeFeature = null; ILineCategory sc = _selectedCategory as ILineCategory; if (sc == null) { _selectedCategory = new LineCategory(Color.Cyan, 1) { LegendItemVisible = false }; } _layer.SetCategory(_selectedFeature, _selectedCategory); } else { _dragging = true; Map.IsBusy = true; _dragCoord = _activeFeature.Geometry.Coordinates[0]; MapPointLayer mpl = _layer as MapPointLayer; if (mpl != null) { mpl.SetVisible(_activeFeature, false); } IPointCategory sc = _selectedCategory as IPointCategory; if (sc == null) { IPointSymbolizer ps = _layer.GetCategory(_activeFeature).Symbolizer.Copy() as IPointSymbolizer; if (ps != null) { ps.SetFillColor(Color.Cyan); _selectedCategory = new PointCategory(ps); } } } } Map.MapFrame.Initialize(); Map.Invalidate(); } } base.OnMouseDown(e); }
/// <inheritdoc /> protected override void OnMouseDown(GeoMouseArgs e) { if (e.Button == MouseButtons.Left || e.Button == MouseButtons.Right) { _mousePosition = e.Location; if (_dragging) { if (e.Button == MouseButtons.Right) { _dragging = false; Map.Invalidate(); Map.IsBusy = false; } } else { // ÆíÁýÇÒ µµÇüÀÌ ¼±ÅõǾî ÀÖÀ¸¸é, ÆíÁýÇÒ Á¤Á¡À» ¼±ÅÃÇÕ´Ï´Ù. if (_selectedFeature != null) { // Á¤Á¡ ¼±ÅÃÀ» À§ÇÑ ¿µ¿ªÀ» ¼³Á¤ÇÕ´Ï´Ù. Rectangle mouseRect = new Rectangle(_mousePosition.X - 3, _mousePosition.Y - 3, 6, 6); Envelope env = Map.PixelToProj(mouseRect).ToEnvelope(); // Á¤Á¡ÀÌ ¼±ÅõǾú½À´Ï´Ù. if (CheckForVertexDrag(e)) { return; } // Á¤Á¡ ¼±ÅÃÀÌ ¹ß»ýÇÏÁö ¾Ê¾Ò½À´Ï´Ù. if (!_selectedFeature.Geometry.Intersects(env.ToPolygon())) { // ¼±ÅÃÀ» Ãë¼ÒÇÕ´Ï´Ù. DeselectFeature(); return; } } if (_activeFeature != null) { // ´Ù°¢Çü°ú ¼±ÀÇ Á¤Á¡À» ¹Ù·Î µå·¡±×ÇÏÁö ¸¶½Ê½Ã¿À. ¸ÕÀú Á¤Á¡À» Ç¥½ÃÇÏ´Â ´Ù°¢ÇüÀ» ¼±ÅÃÇÑ ´ÙÀ½ À̵¿ÇÒ ¼ö ÀÖ½À´Ï´Ù. if (_featureSet.FeatureType == FeatureType.Polygon) // ¸é { _selectedFeature = _activeFeature; _activeFeature = null; if (!(_selectedCategory is IPolygonCategory sc)) { _selectedCategory = new PolygonCategory(Color.FromArgb(55, 0, 255, 255), Color.Blue, 1) { LegendItemVisible = false }; } _layer.SetCategory(_selectedFeature, _selectedCategory); } else if (_featureSet.FeatureType == FeatureType.Line) // ¼± { _selectedFeature = _activeFeature; _activeFeature = null; if (!(_selectedCategory is ILineCategory sc)) { _selectedCategory = new LineCategory(Color.Cyan, 1) { LegendItemVisible = false }; } _layer.SetCategory(_selectedFeature, _selectedCategory); } else // Á¡ { _dragging = true; Map.IsBusy = true; _dragCoord = _activeFeature.Geometry.Coordinates[0]; MapPointLayer mpl = _layer as MapPointLayer; mpl?.SetVisible(_activeFeature, false); if (!(_selectedCategory is IPointCategory sc)) { if (_layer.GetCategory(_activeFeature).Symbolizer.Copy() is IPointSymbolizer ps) { ps.SetFillColor(Color.Cyan); _selectedCategory = new PointCategory(ps); } } } } Map.MapFrame.Initialize(); Map.Invalidate(); } } base.OnMouseDown(e); }