readeps.cpp

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// $Id: readeps.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

This file is part of Xara LX.

Xara LX is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as published
by the Free Software Foundation.

Xara LX and its component source files are distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with Xara LX (see the file GPL in the root directory of the
distribution); if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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-----------------

Conditional upon your continuing compliance with the GNU General Public
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The additional rights are to use, modify, and distribute the software
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----------------

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=================================XARAHEADEREND============================
 */

/*


*/


#include "camtypes.h"

#include <fstream.h>
#include <strstrea.h>
#include <ctype.h>

//#include "node.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "nodepath.h"
//#include "docrect.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "lineattr.h"        
//#include "doccolor.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "ensure.h" - in camtypes.h [AUTOMATICALLY REMOVED]

#include "readeps.h"

DECLARE_SOURCE("$Revision: 1282 $");

// Scale factor of ArtWorks EPS coords -> Camelot DocCoords
const INT32 ScaleFactor = 1000;

#if 0
/********************************************************************************************

>   void ReadEPSData(char *FileName, Node *Parent, DocRect& PageRect, BOOL AddAttrs)

    Author:     Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/7/93
    Inputs:     FileName - name of EPS file to read.
                        Parent - The node to add the EPS data under.
                        PageRect - The coordinates of the page to put the data onto.
                        AddAttrs - if TRUE, random colour and line width attributes will be added to
                        the lines.
    Outputs:    -
    Returns:    -
    Purpose:    Read an ArtWorks EPS file and convert it to paths for use by Camelot by
                        constructing path objects in the document tree.  The ArtWorks EPS files
                        must be filtered so they only contain moveto, lineto, and curveto
                        commands. This can be done with egrep as follows:
                
                        egrep " c$| l$| m$" SrcEPS > DestEPS
                
    Errors:     -
    SeeAlso:    Document

********************************************************************************************/

void ReadEPSData(char *FileName, Node *Parent, DocRect& PageRect, BOOL AddAttrs)
{
    // Get the directory of the .EXE file.
    char Appname[_MAX_PATH];
    GetModuleFileName(AfxGetInstanceHandle(), Appname, _MAX_PATH-1);
    char Drive[_MAX_DRIVE];
    char Dir  [_MAX_DIR  ];
    char Fname[_MAX_FNAME];
    char Ext  [_MAX_EXT  ];
    _tsplitpath(Appname, Drive, Dir, Fname, Ext);
     
    // Use this location to construct the full pathname for EPS file
    char FullFileName[_MAX_PATH];
    camStrcpy(FullFileName, Drive);
    camStrcat(FullFileName, Dir);
    camStrcatl(FullFileName, FileName);
    
    // Array to hold coords that are read in from the file.
    DocCoord Coords[4];
    DocCoord StartPoint;
    DocCoord LastPoint;
    INT32    SegmentCount = 0;          // counts how long the line is
    
    // Pointer to path node
    NodePath *MyPath = NULL;

    // Path tag
    INT32 *Current;
    
    // Open the data file...    
    ifstream in(FullFileName, ios::in | ios::nocreate);
    
    if (in.is_open())
    {
        char buf[256];
        while (!in.eof())
        {
            // Read in the next line
            in.getline(buf, 255);
            
            // Prepare to parse the line
            unsigned i = 0;
            istrstream line(buf);
            
            BOOL CmdExecuted = FALSE;
            
            while ((!CmdExecuted) && (i <= 3))
            {
                // Read in the next field
                line.eatwhite();

                // Is it a coordinate or command?
                if (!isdigit(line.peek()))
                {
                    // Didn't find an numeric - must be a command
                    char Command;
                    line >> Command;
                    if (Command == 'm')
                    {
                        // MoveTo - clean up current path and start a new one
                        if (SegmentCount < 2  &&  MyPath != NULL)
                        {
                            MyPath->CascadeDelete();
                            MyPath = NULL;
                        }
                        
                        if (MyPath != NULL)
                        {
                            MyPath->UpdateInkBoundingRect();
                            
                            if ( LastPoint.x == StartPoint.x  &&  LastPoint.y == StartPoint.y )
                                MyPath->InkPath.SetFilled( TRUE );
                            else
                                MyPath->InkPath.SetFilled( FALSE );
                            
                            //  Testing node attributes here 
                            //  ****************************
                            if (AddAttrs)
                            {
                                DocColour Random((INT32)(rand()%255),
                                                 (INT32)(rand()%255),
                                                 (INT32)(rand()%255));
        
                                AttrFillColour* Attr1 = new AttrFillColour(MyPath, LASTCHILD);
                                Attr1->FillColour = DocColour(Random);
    
                                AttrLineColour* Attr2 = new AttrLineColour(MyPath, LASTCHILD);
                                Attr2->LineColour = DocColour(Random);
                                                        
                                AttrLineWidth* Attr3 =  new AttrLineWidth(MyPath, LASTCHILD); 
                                Attr3->LineWidth = (MILLIPOINT)(750*((rand()%3) + 1)); 
                            }
                        }

                        MyPath = new NodePath(Parent, LASTCHILD); 
                        if (!MyPath->SetUpPath())
                        {
                            MyPath->CascadeDelete();
                            ENSURE(FALSE, "ReadEPSData: Run out of memory");
                            return;
                        }
                            
                        Current = MyPath->InkPath.FindStartOfPath();
                        Current = MyPath->InkPath.InsertMoveTo(Coords[0], Current);
                        StartPoint = Coords[0];
                        LastPoint = StartPoint;
                        SegmentCount = 1;
                    }
                    else if (Command == 'l')
                    {
                        // LineTo
                        Current = MyPath->InkPath.InsertLineTo(Coords[0], Current);
                        LastPoint = Coords[0];
                        SegmentCount++;
                    }
                    else if (Command == 'c')
                    {
                        // CurveTo
                        Current = MyPath->InkPath.InsertCurveTo(Coords[0], Coords[1],
                                                                Coords[2], Current);
                        LastPoint = Coords[0];
                        SegmentCount++;
                    }
                    else if (IsUserName("Tim"))
                    {
                        TRACE( _T("ReadEPSData: unknown command in path data file: '%c'\n"),
                              Command);
                    }
                    
                    CmdExecuted = TRUE;
                }
                else
                {
                    // Coordinate - get the x and y coords, and scale them up
                    float NewCoord;

                    line >> NewCoord;
                    Coords[i].x = (INT32) (NewCoord * ScaleFactor);
                    Coords[i].x += PageRect.lo.x;
                    
                    line >> NewCoord;
                    Coords[i].y = (INT32) (NewCoord * ScaleFactor);
                    Coords[i].y += PageRect.lo.y;

                    i++;
                }
            }
            if ((!CmdExecuted) && IsUserName("Tim"))
            {
                TRACE( _T("Document constructor: Too many coords in path data file.\n"));
                break;
            }
        }
        // Set the bounding rectangle for the last path created.
        if (SegmentCount < 2)
        {
            MyPath->CascadeDelete();
            MyPath = NULL;
        }
                        
        if (MyPath != NULL)
        {
            MyPath->UpdateInkBoundingRect(); 
            
            if ( LastPoint.x == StartPoint.x  &&  LastPoint.y == StartPoint.y )
                MyPath->InkPath.SetFilled( TRUE );
            else
                MyPath->InkPath.SetFilled( FALSE );
            

            //  Testing node attributes here 
            //  ****************************
            if (AddAttrs)
            {
                DocColour Random((INT32)(rand()%255),
                                 (INT32)(rand()%255),
                                 (INT32)(rand()%255));
        
                AttrFillColour* Attr1 = new AttrFillColour(MyPath, LASTCHILD);
                Attr1->FillColour = DocColour(Random);
    
                AttrLineColour* Attr2 = new AttrLineColour(MyPath, LASTCHILD);
                                                        
                AttrLineWidth* Attr3 =  new AttrLineWidth(MyPath, LASTCHILD); 
                Attr3->LineWidth = (MILLIPOINT)(750*((rand()%3) + 1)); 
            }
        }
    }
    else if (IsUserName("Tim"))
        TRACE( _T("Could not open EPS file '%s'\n"), FullFileName);
}

#endif

---