multilineedit.h

//
//  
//    The Laxkit, a windowing toolkit
//    Please consult http://laxkit.sourceforge.net about where to send any
//    correspondence about this software.
//
//    This library is free software; you can redistribute it and/or
//    modify it under the terms of the GNU Library General Public
//    License as published by the Free Software Foundation; either
//    version 2 of the License, or (at your option) any later version.
//
//    This library is 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
//    Library General Public License for more details.
//
//    You should have received a copy of the GNU Library General Public
//    License along with this library; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    Copyright (C) 2004-2007,2010 by Tom Lechner
//
#ifndef _LAX_GOODEDITWW_H
#define _LAX_GOODEDITWW_H


#include <lax/textxeditbase-utf8.h>
#include <lax/scroller.h>
#include <lax/buttondowninfo.h>

#define GOODEDITWW_Y_IS_CHARS   (1<<16)


namespace Laxkit {

class MultiLineEdit : public TextXEditBaseUtf8
{
  protected:
    char *blanktext;
    ButtonDownInfo buttondown;
    int cdir,scrollwidth,mostpixwide,mostcharswide,maxpixwide;
    int numlines,lpers,longestline;
    int mx,my;
    struct Linestat {
        long start;
        int pixlen,indent;
    } *linestats;
    Scroller *xscroller,*yscroller;
    int xscrollislocal,yscrollislocal;
    virtual int send() { return 0; }
 public:
    int padx,pady;
    MultiLineEdit(anXWindow *prnt,const char *nname,const char *ntitle,unsigned long nstyle,
                        int xx,int yy,int ww,int hh,int brder,
                        anXWindow *prev,unsigned long nowner=0,const char *nsend=NULL,
                        unsigned int ntstyle=0,const char *newtext=NULL);
    virtual ~MultiLineEdit();
    virtual void UseTheseScrollers(Scroller *xscroll,Scroller *yscroll);
     // if goodeditww uses outside supplied scrollers, the must be passed on to 
    virtual int init();
    virtual int Event(const EventData *e,const char *mes);
    virtual int CharInput(unsigned int ch,const char *buffer,int len,unsigned int state,const LaxKeyboard *d);
    virtual int LBDown(int x,int y, unsigned int state,int count,const LaxMouse *d);
    virtual int LBDblClick(int x,int y, unsigned int state,const LaxMouse *d);
    virtual int LBUp(int x,int y, unsigned int state,const LaxMouse *d);
    virtual int RBDown(int x,int y, unsigned int state,int count,const LaxMouse *d);
    virtual int RBUp(int x,int y,unsigned int state,const LaxMouse *d);
    virtual int WheelDown(int x,int y,unsigned int state,int count,const LaxMouse *d);
    virtual int WheelUp(int x,int y,unsigned int state,int count,const LaxMouse *d);
    virtual int MouseMove(int x,int y,unsigned int state,const LaxMouse *d);
    virtual int Idle(int tid=0);
    virtual int Resize(int nw,int nh);
    virtual int MoveResize(int nx,int ny,int nw,int nh);

    virtual int Find(char *str,int fromcurs=1); // fromcurs=1 
    virtual int Replace(const char *oldstr,const char *newstr,int all);
    virtual int SetText(const char *newtext);
    virtual long SetCurPos(long newcurpos);
    virtual int SetSelection(long newss,long newse);
     // NOTE: the scrollers are always flush with right and bottom, and newyssize,newxssize modify textrect
    virtual int newyssize();
    virtual int newxssize(int p=1); //p=1, p is to prevent race with newyssize
     // called anytime changes are made in thetext
     // it changes linestats, needtodraw, dpos, nlines
    virtual void wwinspect(int fromline=0); //fromline=0, this and fineline are the linebreaking procs
    virtual int inschar(int ch);
    virtual int delchar(int bksp); // assumes not sellen 
    virtual int insstring(const char *blah,int after=0);    // after=0
    virtual int replacesel(int ch);
    virtual int delsel();
    virtual int getscreenline(long pos);
    virtual int replacesel(const char *newt,int after=0); //newt=NULL deletes, after=0
     // return position most appropriate for x=pix,y=l max <= pi
     // sets curpos to pos near (x,y)=(l,pix)
    virtual long findpos(int l,int pix,int updatecp=1,int conv=1);
    virtual long countout(int linenumber,int &pout);
    virtual int makeinwindow();  // assumes cx,cy already set accurately 
    virtual void findcaret();
     // returns 1 if there is a change, 0 if not
    virtual int ShiftScreen(int x,long y);  // ylines 
    virtual int isword(long pos);
     // returns pos of start of next potential screen line after ls, assumes ilsofar set right
     // updates ilsofar which basically becomes pixlen of line with ls
    virtual long findline(long ls,int &ilsofar);
     // find what should be the start of the screen line that contains pos
    virtual long findlinestart(long pos=-1); //pos=-1 means use curpos
     // this remaps linestats, but does not findcaret
     // it does find and set mostpixwide,longestline, dpos,nlines
    virtual int makelinestart(int startline,long ulwc,int godown,int ifdelete);
     // does not recompute linestats.pixlens
    virtual int Getmostwide();  // returns which line 
    virtual long WhichLine(long pos);
    virtual void DrawText(int black=1); // black=1 
    virtual int SetupMetrics();
    virtual void SetupScreen();

    virtual LaxFiles::Attribute *dump_out_atts(LaxFiles::Attribute *att,int what,Laxkit::anObject *savecontext);
    virtual void dump_in_atts(LaxFiles::Attribute *att,int flag,Laxkit::anObject *loadcontext);
 
};

} // namespace Laxkit

#endif