/// <summary>
/// Tries to find the referencable node (with a name) corresponding to a given coordinate.
/// If no such node exists, null is returned.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public static Tikz_Node GetReferenceableNode(Tikz_XYItem item, Tikz_Picture tpict)
{
if (item == null || tpict == null)
{
return(null);
}
if (item is Tikz_Node)
{
Tikz_Node n = item as Tikz_Node;
if (n.name == null || n.name.Trim() == "")
{
return(null);
}
else
{
return(n);
}
}
else if (item is Tikz_Coord || item is Tikz_Arc)
{
// find the next node
for (int i = item.parent.Children.IndexOf(item) + 1; i < item.parent.Children.Count; i++)
{
if (item.parent.Children[i] is Tikz_Node)
{
Tikz_Node n = item.parent.Children[i] as Tikz_Node;
// check if the node is really at the same position as the coordinate item
if (n.coord == null)
{
if (n.name != null && n.name.Trim() != "")
{
return(n);
}
continue;
}
else
{
return(null);
}
}
if (!(item.parent.Children[i] is Tikz_Something))
{
break;
}
}
// if we get here, nothing was found
return(null);
}
else
{
return(null);
//throw new NotImplementedException("MakeReferenceableNode not implemented for this type");
}
}
private static string UniquefyName(string oldname, Tikz_Picture tp)
{
int postfix = 1;
while (tp.nodelist.ContainsKey(oldname + "_" + postfix))
{
postfix++;
}
return(oldname + "_" + postfix);
}
/// <summary>
/// Takes an XYItem (like (2,2) or a node) and tries to make it into a referenceable node
/// (i.e, one with a name)
///
/// Concretely, the routine does the following:
/// - if item is a named node, return item.
/// - if item is an unnamed node, give it a unique name and return item.
/// - if item is a coordinate, see if there is a node at this coordinate
/// (algorithm: see if next non-tikz_something item is a node)
/// - if yes, start anew with item=this node
/// - if no, add a named node at the specified coordinate
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
protected Tikz_Node MakeReferenceableNode(Tikz_XYItem item)
{
Tikz_Picture tpict = overlay.ParseTree.GetTikzPicture();
if (item is Tikz_Node)
{
Tikz_Node n = item as Tikz_Node;
if (n.name == "")
{
n.SetName(tpict.GetUniqueName());
n.UpdateText();
}
return(n);
}
else if (item is Tikz_Coord)
{
// find the next node
for (int i = item.parent.Children.IndexOf(item) + 1; i < item.parent.Children.Count; i++)
{
if (item.parent.Children[i] is Tikz_Node)
{
// check if the node is really at the same position as the coordinate item
if ((item.parent.Children[i] as Tikz_Node).coord == null)
{
return(MakeReferenceableNode(item.parent.Children[i] as Tikz_Node));
}
else
{
break;
}
}
if (!(item.parent.Children[i] is Tikz_Something))
{
break;
}
}
// if we get here, nothing was found => add a new node
Tikz_Something ws = new Tikz_Something(" ");
Tikz_Node n = new Tikz_Node();
n.coord = null;
item.parent.InsertChildAt(ws, item.parent.Children.IndexOf(item) + 1);
item.parent.InsertChildAt(n, item.parent.Children.IndexOf(item) + 2);
n.SetName(tpict.GetUniqueName());
n.UpdateText();
return(n);
}
else
{
throw new NotImplementedException("MakeReferenceableNode not implemented for this type");
}
}
//create a new CurAddTo (even though their already might be one)
//(needed for edge tool)
protected virtual bool AddNewCurAddTo()
{
// find tikzpicture
Tikz_Picture tpict = overlay.ParseTree.GetTikzPicture();
if (tpict == null)
{
return(false);
}
Parser.Tikz_Path tp = new Parser.Tikz_Path();
tp.starttag = @"\draw ";
tp.endtag = ";";
if (overlay.EdgeStyle != "")
{
Parser.Tikz_Options topt = new Parser.Tikz_Options();
topt.starttag = "[";
topt.endtag = "]";
Parser.Tikz_Option to = new Parser.Tikz_Option();
to.type = Parser.Tikz_OptionType.key;
to.key = overlay.EdgeStyle;
topt.AddOption(to);
tp.AddChild(topt);
tp.options = topt;
}
if (overlay.CurEditing != null)
{
overlay.CurEditing.tikzitem.AddChild(tp);
overlay.CurEditing.tikzitem.AddChild(new Parser.Tikz_Something("\r\n"));
}
else
{
tpict.AddChild(tp);
tpict.AddChild(new Parser.Tikz_Something("\r\n"));
}
curAddTo = tp;
return(true);
}
public void ParseTest4()
{
string code =
@"%some text
\begin{tikzpicture}[scale=2]
\draw (1,2) node (v) {bla} -- (3,3);
\end{tikzpicture}
";
Tikz_ParseTree actual = TikzParser.Parse(code);
Tikz_Picture tp = actual.GetTikzPicture();
Tikz_Node n = tp.GetNodeByName("v");
System.Windows.Point p;
bool ret = n.GetAbsPos(out p);
Assert.IsTrue(ret);
Assert.AreEqual(2, p.X);
Assert.AreEqual(4, p.Y);
Assert.AreEqual("bla", n.label);
}
protected virtual bool EnsureCurAddToExists(out bool created)
{
created = false;
if (overlay.ParseTree == null)
{
return(false);
}
// find tikzpicture
Parser.Tikz_Picture tpict = overlay.ParseTree.GetTikzPicture();
if (tpict == null)
{
if (overlay.AllowEditing)
{
// add a new tikzpicture
Tikz_Picture tp = new Tikz_Picture();
tp.starttag = "\\begin{tikzpicture}";
tp.AddChild(new Tikz_Something("\r\n"));
tp.endtag = "\\end{tikzpicture}";
//overlay.BeginUpdate();
overlay.ParseTree.AddChild(tp);
tp.UpdateText();
//overlay.EndUpdate();
}
else
{
return(false);
}
}
if (curAddTo == null || !(curAddTo is Parser.Tikz_Path))
{
created = AddNewCurAddTo();
}
return(true);
}
public void ParseTest2()
{
string code =
@"\begin{tikzpicture}
\draw (1,2) -- (3,3);
\end{tikzpicture}
";
Tikz_ParseTree actual = TikzParser.Parse(code);
Tikz_Picture tp = actual.GetTikzPicture();
Assert.AreEqual(0, tp.StartPosition());
Tikz_Path tpa = tp.Children.Find(tpi => tpi is Tikz_Path) as Tikz_Path;
Assert.AreEqual(21, tpa.StartPosition());
Tikz_Coord tc = tpa.Children.Find(tpi => tpi is Tikz_Coord) as Tikz_Coord;
Assert.AreEqual(1, tc.uX.number);
Assert.AreEqual(2, tc.uY.number);
Assert.AreEqual(27, tc.StartPosition());
}
protected bool EnsureParseTreeExists()
{
// Try to create a new ParseTree
if (overlay.ParseTree == null)
{
// TODO
return(false);
//TryCreateNew(this, out lret);
if (overlay.AllowEditing)
{
// create a new parsetree
Tikz_ParseTree t = new Tikz_ParseTree();
Tikz_Picture tp = new Tikz_Picture();
tp.starttag = "\\begin{tikzpicture}";
tp.AddChild(new Tikz_Something("\r\n"));
tp.endtag = "\\end{tikzpicture}";
overlay.BeginUpdate();
// overlay.ParseTree = t;
t.AddChild(tp);
tp.UpdateText();
overlay.EndUpdate();
return(true);
}
else
{
GlobalUI.ShowMessageBox("Parse tree could not be created. Please correct all parser errors in the code and try again.", "Function not available", MessageBoxButton.OK, MessageBoxImage.Exclamation);
return(false);
}
}
else
{
return(true);
}
}
/// <summary>
/// Scans for duplicate node names in the parse tree and changes them to make them unique.
/// Also updates references.
/// </summary>
/// <param name="tp"></param>
public static void UniquefyNodeNames(Tikz_ParseTree tpt)
{
if (tpt == null)
{
return;
}
Dictionary <string, Tikz_Node> nodelist = new Dictionary <string, Tikz_Node>();
Tikz_Picture tp = tpt.GetTikzPicture();
if (tp == null)
{
return;
}
tpt.BeginModify();
// clear current node refs
tp.nodelist.Clear();
// scan for nodes, rename and re-register noderefs
ScanTree(tp, nodelist, tp);
tpt.EndModify();
}
public void SetCorrectRaster(TikzParseItem tpi, bool IsParent = false)
{
if (ParseTree == null)
{
return;
}
if (tpi == null)
{
Tikz_Picture tp = ParseTree.GetTikzPicture();
if (tp != null)
{
TikzMatrix M;
if (!tp.GetCurrentTransformAt(null, out M))
{
Rasterizer.View.CoordinateTransform = new TikzMatrix(); // if the program gets here, the global coord. transformation could not be understood->ovelay should display nothing
}
else
{
Rasterizer.View.CoordinateTransform = M;
}
//rasterizer.RasterOrigin = M.Transform(new Point(0, 0));
//rasterizer.RasterScale = M.m[1, 1];
Rasterizer.View.IsCartesian = !UsePolarCoordinates;
}
}
else if (tpi is Tikz_Scope)
{
Tikz_Scope ts = tpi as Tikz_Scope;
TikzMatrix M;
if (IsParent)
{
if (!ts.GetCurrentTransformAt(null, out M)) // todo
{
M = new TikzMatrix(); // broken coords-> take unity as backup
}
}
else
{
//if (!ts.parent.GetCurrentTransformAt(ts, out M))
// M = new TikzMatrix();
if (!ts.GetRasterTransform(out M))
{
M = new TikzMatrix();
}
}
Rasterizer.View.CoordinateTransform = M;
//rasterizer.RasterOrigin = M.Transform(new Point(0, 0));
//rasterizer.RasterScale = M.m[1, 1];
Rasterizer.View.IsCartesian = !IsParent || !UsePolarCoordinates;
}
else if (tpi is Tikz_XYItem)
{
Tikz_XYItem t = tpi as Tikz_XYItem;
Point offset;
if (t.GetAbsPos(out offset, true))
{
TikzMatrix M;
if (!t.parent.GetCurrentTransformAt(t, out M)) //.CloneIt();
{
M = new TikzMatrix();
}
M.m[0, 2] = offset.X;
M.m[1, 2] = offset.Y;
//rasterizer.RasterScale = M.m[1, 1];
Rasterizer.View.CoordinateTransform = M;
Rasterizer.View.IsCartesian = !(t.IsPolar());
}
else
{
throw new Exception("In PdfOverlay: Encountered drawn item without valid coordinates");
}
}
else if (tpi is Tikz_Path)
{
Tikz_Path ts = tpi as Tikz_Path;
TikzMatrix M;
if (IsParent)
{
Point curPointAtEnd;
if (!ts.GetCurrentTransformAt(null, out M)) // todo
{
M = new TikzMatrix(); // broken coords-> take unity as backup
}
if (ts.GetAbsOffset(out curPointAtEnd, null))
{
M.m[0, 2] = curPointAtEnd.X;
M.m[1, 2] = curPointAtEnd.Y;
}
}
else
{
if (!ts.parent.GetCurrentTransformAt(ts, out M))
{
M = new TikzMatrix();
}
//if (!ts.GetRasterTransform(out M))
// M = new TikzMatrix();
}
Rasterizer.View.CoordinateTransform = M;
//rasterizer.RasterOrigin = M.Transform(new Point(0, 0));
//rasterizer.RasterScale = M.m[1, 1];
Rasterizer.View.IsCartesian = !IsParent || !UsePolarCoordinates;
}
else
{
Debug.WriteLine("Error in SetCorrectRaster: unsupported type");//Rasterizer.IsCartesian = true; // should not get here
}
}
public void AssignStyle(AssignStyleType type)
{
string cStyle = NodeStyle;
Tikz_Picture tp = ParseTree.GetTikzPicture();
if (tp == null)
{
return;
}
if (View.Tool != OverlayToolType.move)
{
return; // context menu should actually only open with move tool,... but to be safe against later changes...
}
if (type == AssignStyleType.AssignNewStyle || type == AssignStyleType.ChangeToNewStyle)
{
if (Overlay.InputMessageBox.ShowInputDialog("New style...", "Please enter a unique style name", out cStyle) != MessageBoxResult.OK)
{
return;
}
cStyle = cStyle.Trim();
// check if style name is valid and unique
if (ParseTree == null || cStyle == "")
{
return;
}
if (ParseTree.styles.ContainsKey(cStyle))
{
GlobalUI.ShowMessageBox("Error: Style name '" + cStyle + "' already exists.", "Style exists", MessageBoxButton.OK, MessageBoxImage.Warning);
return;
}
// add new style, immediately before \begin{tikzpicture}[...]
BeginUpdate();
Tikz_Option to = new Tikz_Option();
to.type = Tikz_OptionType.style;
to.key = cStyle;
to.val = "";
to.text = "\\tikzstyle{" + cStyle + "}=[];";
int index = ParseTree.Children.IndexOf(tp);
if (index >= 0)
{
ParseTree.InsertChildAt(to, index);
to.RegisterNodeAndStyleRefs();
ParseTree.InsertChildAt(new Tikz_Something(Environment.NewLine), index + 1);
}
}
else
{
if (cStyle.Trim() == "")
{
return;
}
BeginUpdate();
}
// loop through selected items and set styles
foreach (OverlayShape ols in selectionTool.SelItems)
{
// currently only node styles can be set
if (ols.item is Tikz_Node)
{
Tikz_Node tn = ols.item as Tikz_Node;
if (tn.options == "" || type == AssignStyleType.ChangeToCurrentNodeStyle || type == AssignStyleType.ChangeToNewStyle)
{
tn.options = "[" + cStyle + "]";
}
else // just add option
{
string o = tn.options.Trim();
if (o.EndsWith("]"))
{
o = o.Substring(0, o.Length - 1);
o = o + ", " + cStyle + "]";
} // otherwise, do nothing (error)
tn.options = o;
}
tn.UpdateText();
}
}
EndUpdate(); // Make sure EndUpdate() is always called (..if Beginupdate() was)!
}
static bool FillItem(TikzContainerParseItem item, CommonTree t, CommonTokenStream tokens)
{
int curToken = t.TokenStartIndex;
if (item is Tikz_ParseTree)
{
curToken = 0; // for root, start at the beginning
}
if (t.Children == null)
{
return(false);
}
foreach (CommonTree childt in t.Children)
{
addSomething(item, tokens, curToken, childt.TokenStartIndex - 1);
switch (childt.Type)
{
case simpletikzParser.IM_PICTURE:
Tikz_Picture tp = new Tikz_Picture();
FillItem(tp, childt, tokens);
item.AddChild(tp);
break;
case simpletikzParser.IM_STARTTAG:
item.starttag = getTokensString(tokens, childt.TokenStartIndex, childt.TokenStopIndex);
break;
case simpletikzParser.IM_ENDTAG:
item.endtag = getTokensString(tokens, childt.TokenStartIndex, childt.TokenStopIndex);
break;
case simpletikzParser.IM_PATH:
Tikz_Path tpath = new Tikz_Path();
FillItem(tpath, childt, tokens);
item.AddChild(tpath);
break;
case simpletikzParser.IM_SCOPE:
Tikz_Scope tscope = new Tikz_Scope();
FillItem(tscope, childt, tokens);
item.AddChild(tscope);
break;
case simpletikzParser.IM_COORD:
Tikz_Coord tc = Tikz_Coord.FromCommonTree(childt, tokens);
tc.text = getTokensString(tokens, childt);
item.AddChild(tc);
break;
case simpletikzParser.IM_ARC:
Tikz_Arc ta = Tikz_Arc.FromCommonTree(childt, tokens);
ta.text = getTokensString(tokens, childt);
item.AddChild(ta);
break;
case simpletikzParser.IM_NODE:
Tikz_Node tn = Tikz_Node.FromCommonTree(childt, tokens);
tn.text = getTokensString(tokens, childt);
item.AddChild(tn);
break;
case simpletikzParser.IM_OPTION_KV:
case simpletikzParser.IM_OPTION_STYLE:
Tikz_Option topt = Tikz_Option.FromCommonTree(childt, tokens);
if (topt == null)
{
break;
}
//topt.text = getTokensString(tokens, childt);
String s = getTokensString(tokens, childt);
topt.text = s;
item.AddChild(topt);
break;
case simpletikzParser.IM_OPTIONS:
//Tikz_Options to = Tikz_Options.FromCommonTree(childt);
Tikz_Options to = new Tikz_Options();
FillItem(to, childt, tokens);
item.AddChild(to);
//to.text = getTokensString(tokens, childt);
//item.AddChild(tn);
if (item.options == null)
{
// determine whether option belongs to the item (e.g. \draw [this belongs to draw] blabla [thisnot])
// i.e., the scope of the options is the whole item's body
// this is hacky
if (item.Children.Count == 1 ||
(item.Children.Count == 2 && (item.Children[0] is Tikz_Something) &&
item.Children[0].ToString().Trim() == ""))
{
item.options = to;
}
}
break;
case simpletikzParser.IM_TIKZSET:
Tikz_Options to2 = new Tikz_Options();
FillItem(to2, childt, tokens);
item.AddChild(to2);
break;
case simpletikzParser.IM_STYLE:
Tikz_Option topt2 = Tikz_Option.FromCommonTree(childt, tokens);
//FillItem(to2, childt, tokens);
topt2.text = getTokensString(tokens, childt);
item.AddChild(topt2);
break;
case simpletikzParser.IM_CONTROLS:
Tikz_Controls tcontrols = new Tikz_Controls();
FillItem(tcontrols, childt, tokens);
item.AddChild(tcontrols);
break;
case simpletikzParser.IM_SIZE:
Tikz_Size tsize = Tikz_Size.FromCommonTree(childt, tokens);
tsize.text = getTokensString(tokens, childt);
item.AddChild(tsize);
//Tikz_Size tsize = new Tikz_Size();
//item.AddChild(tsize);
break;
//case simpletikzParser.ID:
//case simpletikzParser.IM_STRING:
//case simpletikzParser.COMMAND:
//case simpletikzParser.T__57:
// break;
case simpletikzParser.IM_TIKZEDT_CMD:
Tikz_EdtCommand cmd = new Tikz_EdtCommand(getTokensString(tokens, childt));
item.AddChild(cmd);
break;
case simpletikzParser.IM_DONTCARE:
Tikz_Something st = new Tikz_Something(getTokensString(tokens, childt));
item.AddChild(st);
break;
default:
// getting here is an error
throw new Exception(" childt.Type not handled! " + childt.Type.ToString() + " (\"" + getTokensString(tokens, childt) + "\")");
//break;
}
curToken = childt.TokenStopIndex + 1;
}
if (t.TokenStartIndex >= 0) // rule out empty code
{
addSomething(item, tokens, curToken, t.TokenStopIndex);
}
return(true);
}
/// <summary>
/// Recursive function to scan the parsetree in a depth first manner.
/// nodelist contains the current map from _old_ nodenames to nodes. it is used to update node references
/// </summary>
private static void ScanTree(TikzContainerParseItem tc, Dictionary <string, Tikz_Node> nodelist, Tikz_Picture tp)
{
foreach (var tpi in tc.Children)
{
if (tpi is Tikz_Node)
{
Tikz_Node tn = tpi as Tikz_Node;
if (tn.name != null && tn.name.Trim() != "")
{
string name = CleanName(tn.name.Trim());
// remember the node with its old name (all coordinates referring to this name henceforth will be changed to the new name
nodelist[name] = tn;
if (tp.nodelist.ContainsKey(name))
{
// we have to change the name
tn.name = UniquefyName(name, tp);
tn.UpdateText();
}
tn.RegisterNodeAndStyleRefs();
}
}
else if (tpi is Tikz_Coord)
{
Tikz_Coord tco = tpi as Tikz_Coord;
if (tco.type == Tikz_CoordType.Named)
{
string nameref = CleanName(tco.nameref);
if (nodelist.ContainsKey(nameref))
{
if (CleanName(nodelist[nameref].name) != nameref)
{
tco.nameref = CleanName(nodelist[nameref].name);
tco.UpdateText();
}
}
}
}
else if (tpi is TikzContainerParseItem)
{
ScanTree(tpi as TikzContainerParseItem, nodelist, tp);
}
}
}
