svg_interactive_map.cpp

这是一个GPS相关的程序

		"			<circle fill=\"dimgray\" cx=\"0\" cy=\"0\" r=\"1\" pointer-events=\"none\"/>\n"
		"			<g fill=\"none\" stroke=\"dimgray\" stroke-width=\"1.5\" pointer-events=\"none\">\n"
		"				<line x1=\"-7\" y1=\"-7\" x2=\"-3\" y2=\"-3\"/>\n"
		"				<line x1=\"7\" y1=\"7\" x2=\"3\" y2=\"3\"/>\n"
		"				<line x1=\"-7\" y1=\"7\" x2=\"-3\" y2=\"3\"/>\n"
		"				<line x1=\"7\" y1=\"-7\" x2=\"3\" y2=\"-3\"/>\n"
		"			</g>\n"
		"		</symbol>\n"
		"		<!-- Symbol for Slider -->\n"
		"		<symbol id=\"sliderSymbol\" overflow=\"visible\" pointer-events=\"none\">\n"
		"			<line x1=\"0\" y1=\"-5\" x2=\"0\" y2=\"5\" fill=\"none\" stroke=\"dimgray\" stroke-width=\"5\"/>\n"
		"		</symbol>\n"
		"		<!-- Symbol for Dragging if zoomed in far -->\n"
		"		<symbol id=\"myDragCrossSymbol\" overflow=\"visible\" stroke-width=\"2000\" fill=\"none\" stroke=\"darkblue\" pointer-events=\"none\">\n"
		"			<line x1=\"-7000\" y1=\"0\" x2=\"-2500\" y2=\"0\"/>\n"
		"			<line x1=\"7000\" y1=\"0\" x2=\"2500\" y2=\"0\"/>\n"
		"			<line x1=\"0\" y1=\"-3300\" x2=\"0\" y2=\"-7800\"/>\n"
		"			<line x1=\"0\" y1=\"3300\" x2=\"0\" y2=\"7800\"/>\n"
		"		</symbol>\n"
		"		<!-- Marker for Extent-Arrows -->\n"
		"		<marker id=\"myStartArrow\" overflow=\"visible\" orient=\"auto\">\n"
		"			<polyline fill=\"dimgray\" points=\"-0.5,0 8,-2 8,2\"/>\n"
		"		</marker>\n"
		"		<marker id=\"myEndArrow\" overflow=\"visible\" orient=\"auto\">\n"
		"			<polyline fill=\"dimgray\" points=\"0.5,0 -8,-2 -8,2\"/>\n"
		"		</marker>\n"
		"	</defs>\n"
		"	<rect x=\"-500\" y=\"-500\" width=\"3000\" height=\"3000\" stroke=\"none\" fill=\"aliceblue\" />\n"
		"	<!-- Main Map Frame -->\n"
		"	<svg id=\"mainMap\" x=\"0\" y=\"15\" width=\"550\" height=\"700\"	cursor=\"crosshair\" "
	));
}


///////////////////////////////////////////////////////////
//														 //
//														 //
//														 //
///////////////////////////////////////////////////////////

//---------------------------------------------------------
void CSVG_Interactive_Map::_Add_ReferenceMap(CSG_Shapes *pIndexLayer, CSG_Rect r)
{
	int i;
	CSG_String sViewBox;
	double Line_Width, Point_Width;
	double Width, Height;
	double OffsetX, OffsetY;
	CSG_Shape *pShape;

	if (r.Get_XRange() / r.Get_YRange()  > MAP_WINDOW_WIDTH / MAP_WINDOW_HEIGHT)
	{
		Width = r.Get_XRange();
		Height =  r.Get_XRange() * MAP_WINDOW_HEIGHT / MAP_WINDOW_WIDTH;
	}
	else
	{
		Height = r.Get_YRange();
		Width = r.Get_YRange() / MAP_WINDOW_HEIGHT * MAP_WINDOW_WIDTH;
	}

	OffsetX = (Width - r.Get_XRange()) / 2.;
	OffsetY = (Height - r.Get_YRange()) / 2.;

	sViewBox.Append(SG_Get_String(r.Get_XMin() - OffsetX,2));
	sViewBox.Append(wxT(" "));
	sViewBox.Append(SG_Get_String(- r.Get_YMax() - OffsetY,2));
	sViewBox.Append(wxT(" "));
	sViewBox.Append(SG_Get_String(Width,2));
	sViewBox.Append(wxT(" "));
	sViewBox.Append(SG_Get_String(Height,2));

	_AddAttribute(wxT("viewBox"), sViewBox);	

	m_sSVGCode.Append(_Get_Code_3());
	
	if (pIndexLayer)
	{
		m_sSVGCode.Append(wxT("<g id=\"index\">\n"));
		for (i = 0; i < pIndexLayer->Get_Count(); i++)
		{
			pShape = pIndexLayer->Get_Shape(i);
			Line_Width = Point_Width = m_dWidth / MAP_WINDOW_WIDTH;
			Point_Width *= 5;
			_Add_Shape(pShape, 0, 0, Line_Width, Point_Width);
		}
		m_sSVGCode.Append(wxT("</g>\n"));
	}

	m_sSVGCode.Append(_Get_Code_4());
		
	_AddAttribute(wxT("x"), r.Get_XMin() - OffsetX);
	_AddAttribute(wxT("y"), - r.Get_YMax() - OffsetY);
	_AddAttribute(wxT("width"), Width);
	_AddAttribute(wxT("height"), Height);

	m_sSVGCode.Append(_Get_Code_5());

}

//---------------------------------------------------------
void CSVG_Interactive_Map::_Add_Grid(CWKSP_Grid *pLayer)
{
	wxString Filename;
	wxBitmap BMP;
	
	if( pLayer->Get_Image_Grid(BMP) )
	{
		Filename	= SG_File_Make_Path(m_Directory.c_str(), pLayer->Get_Object()->Get_Name(), wxT("jpg"));
		BMP.SaveFile(Filename, wxBITMAP_TYPE_JPEG);

		m_sSVGCode.Append(wxT("<image "));

		_AddAttribute(wxT("id")			, pLayer->Get_Object()->Get_Name());
		_AddAttribute(wxT("x")			, ((CSG_Grid *)pLayer->Get_Object())->Get_XMin());
		_AddAttribute(wxT("y")			,-((CSG_Grid *)pLayer->Get_Object())->Get_YMax());
		_AddAttribute(wxT("width")		, ((CSG_Grid *)pLayer->Get_Object())->Get_XRange());
		_AddAttribute(wxT("height")		, ((CSG_Grid *)pLayer->Get_Object())->Get_YRange());
		_AddAttribute(wxT("xlink:href")	, SG_File_Get_Name(Filename, true));

		m_sSVGCode.Append(wxT("/>"));
	}
}

//---------------------------------------------------------
void CSVG_Interactive_Map::_Add_Shapes(CWKSP_Shapes *pLayer)
{
	int i;
	int iColorField;
	int Line_Color, Fill_Color; 
	double Line_Width, Point_Width;
	double dSize;
	CSG_Shape *pShape;
	CSG_String sLabel;

	m_sSVGCode.Append(wxT("<g id=\""));
	m_sSVGCode.Append(pLayer->Get_Object()->Get_Name());		
	m_sSVGCode.Append(wxT("\" >\n"));
	
	iColorField = pLayer->Get_Color_Field();

	m_sSVGCode.Append(wxT("<g transform=\"scale(1,-1)\">\n"));

	for (i = 0; i < ((CSG_Shapes*)pLayer->Get_Object())->Get_Count(); i++)
	{
		pShape = pLayer->Get_Shapes()->Get_Shape(i);
		Line_Color = Fill_Color = pLayer->Get_Classifier()->Get_Class_Color_byValue(pShape->Get_Record()->asDouble(iColorField));
		Line_Width = Point_Width = m_dWidth / MAP_WINDOW_WIDTH;
		Point_Width *= 5;
		_Add_Shape(pShape, Fill_Color, Line_Color, Line_Width, Point_Width);
	}
	
	if (pLayer->Get_Label_Field() >= 0)
	{
		m_sSVGCode.Append(wxT("<g transform=\"scale(0.01,-0.01)\"\n>"));
		for (i = 0; i < ((CSG_Shapes*)pLayer->Get_Object())->Get_Count(); i++)
		{
			pShape = pLayer->Get_Shapes()->Get_Shape(i);
			Line_Width = Point_Width = m_dWidth / MAP_WINDOW_WIDTH;
			sLabel = (pShape)->Get_Record()->asString(pLayer->Get_Label_Field());
			switch( pLayer->Get_Parameters()->Get_Parameter(wxT("LABEL_ATTRIB_SIZE_TYPE"))->asInt() )
			{
				case 0:	default:
					dSize = Line_Width * pLayer->Get_Parameters()->Get_Parameter(wxT("LABEL_ATTRIB_FONT"))->asFont()->GetPointSize();
					_Add_Label(sLabel, pShape, dSize, wxT("%"));
					break;
				case 1:
					dSize =  pLayer->Get_Parameters()->Get_Parameter(wxT("LABEL_ATTRIB_SIZE"))->asDouble();
					_Add_Label(sLabel, pShape, dSize, wxT(""));
					break;
			}
		}

		m_sSVGCode.Append(wxT("</g>\n"));
	}

	m_sSVGCode.Append(wxT("</g>\n</g>\n"));
}

//---------------------------------------------------------
void CSVG_Interactive_Map::_Add_Label(const wxChar* Label, CSG_Shape *pShape, double dSize, const wxChar* Unit)
{

	int iPoint, iPart;
	TSG_Point Point;

	switch( pShape->Get_Type() )
	{
	case SHAPE_TYPE_Point:
	case SHAPE_TYPE_Points:
		for(iPoint=0; iPoint < pShape->Get_Point_Count(0); iPoint++)
		{
			Point = pShape->Get_Point(iPoint);
			Draw_Text(100 * Point.x, -100 * Point.y, Label, 0, wxT("Verdana"), 100 * dSize, Unit);
		}
		break;

	case SHAPE_TYPE_Line:
		///************///
		break;

	case SHAPE_TYPE_Polygon:
		
		for (iPart = 0; iPart < pShape->Get_Part_Count(); iPart++)
		{
			if(! ((CSG_Shape_Polygon *)pShape)->is_Lake(iPart) )
			{
				Point = ((CSG_Shape_Polygon *)pShape)->Get_Centroid(iPart);
				Draw_Text(100 * Point.x, -100 * Point.y, Label, 0, wxT("Verdana"), 100 * dSize, Unit);
			}
		}
		break;
	}

}

//---------------------------------------------------------
bool CSVG_Interactive_Map::_Add_Shape(CSG_Shape *pShape, int Fill_Color, int Line_Color, double Line_Width, double Point_Width)
{
	if( pShape && pShape->is_Valid() )
	{
		int				iPart, iPoint;
		TSG_Point		Point;
		CSG_Points	Points;

		for(iPart=0; iPart<pShape->Get_Part_Count(); iPart++)
		{
			Points.Clear();

			for(iPoint=0; iPoint<pShape->Get_Point_Count(iPart); iPoint++)
			{
				Point = pShape->Get_Point(iPoint, iPart);
				Points.Add(Point.x, Point.y);
			}

			switch( pShape->Get_Type() )
			{
			case SHAPE_TYPE_Point:
			case SHAPE_TYPE_Points:
				for(iPoint=0; iPoint<Points.Get_Count(); iPoint++)
				{
					Draw_Circle(Points[iPoint].x, Points[iPoint].y, Point_Width, Fill_Color, 0, Line_Width, wxT(""));
				}
				break;

			case SHAPE_TYPE_Line:
				Draw_Line(Points, Line_Width, wxT(""), Line_Color);
				break;

			case SHAPE_TYPE_Polygon:
				if( ((CSG_Shape_Polygon *)pShape)->is_Lake(iPart) )
				{
					Draw_Polygon(Points, -1, 0, 0.01, wxT("%"));
				}
				else
				{
					Draw_Polygon(Points, Fill_Color, 0, 0.01, wxT("%"));
				}
				break;
			}
		}

		return( true );
	}

	return( false );
}

//---------------------------------------------------------
void CSVG_Interactive_Map::_Add_CheckBoxes(CWKSP_Map *pMap)
{

	int i;
	CSG_String s;
	int x,y;
	int iRow = 1;
	
	m_sSVGCode.Append(_Get_Code_1());	// 2* <g> open
	m_sSVGCode.Append(LNG("Layers"));
	m_sSVGCode.Append(wxT("</text>\n"));

	for (i = 0; i < pMap->Get_Count(); i++)
	{
		y = iRow * 30;

		if (i % 2)
		{
			x = 200;		
			iRow++;
		}
		else
		{
			x = 0;
		}
	
		m_sSVGCode.Append(wxT("<g "));
		s = wxT("translate(");
		s.Append(SG_Get_String(x,0));
		s.Append(wxT(" "));
		s.Append(SG_Get_String(y,0));
		s.Append(wxT("))"));
		_AddAttribute(wxT("transform"), s);
		m_sSVGCode.Append(wxT(">\n"));

		m_sSVGCode.Append(wxT("<use "));
		s = wxT("checkBox");
		s.Append(pMap->Get_Layer(i)->Get_Layer()->Get_Object()->Get_Name());
		_AddAttribute(wxT("id"), s);
		_AddAttribute(wxT("xlink:href"), wxT("#checkBoxRect"));
		s = wxT("checkBoxScript(evt,'");
		s.Append(pMap->Get_Layer(i)->Get_Layer()->Get_Object()->Get_Name());
		s.Append(wxT("');"));
		_AddAttribute(wxT("onclick"), s);
		m_sSVGCode.Append(wxT("/>\n"));

		m_sSVGCode.Append(wxT("<use "));
		s = wxT("checkCross");
		s.Append(pMap->Get_Layer(i)->Get_Layer()->Get_Object()->Get_Name());
		_AddAttribute(wxT("id"), s);
		_AddAttribute(wxT("xlink:href"), wxT("#checkBoxCross"));		
		_AddAttribute(wxT("visibility"), wxT("visible"));
		m_sSVGCode.Append(wxT("/>\n"));