//*CMZ : 2.00/00 16/02/98 02.36.03 by Fons Rademakers
//*-- Author : Fons Rademakers 05/01/98
//*KEEP,CopyRight,T=C.
/*************************************************************************
* Copyright(c) 1995-1999, The ROOT System, All rights reserved. *
* Authors: Rene Brun, Fons Rademakers. *
* For list of contributors see $ROOTSYS/AA_CREDITS. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation for non-commercial purposes is hereby granted without *
* fee, provided that the above copyright notice appears in all copies *
* and that both the copyright notice and this permission notice appear *
* in the supporting documentation. The authors make no claims about the *
* suitability of this software for any purpose. It is provided "as is" *
* without express or implied warranty. *
*************************************************************************/
//*KEEP,CopyLeft.
/**************************************************************************
This source is based on Xclass95, a Win95-looking GUI toolkit.
Copyright (C) 1996, 1997 David Barth, Ricky Ralston, Hector Peraza.
Xclass95 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.
**************************************************************************/
//*KEND.
//////////////////////////////////////////////////////////////////////////
// //
// TGString and TGHotString //
// //
// TGString wraps a TString and adds some graphics routines like //
// drawing, size of string on screen depending on font, etc. //
// TGHotString is a string with a "hot" character unerlined. //
// //
//////////////////////////////////////////////////////////////////////////
//*KEEP,TGString.
#include "TGString.h"
//*KEEP,TGXW.
#include "TGXW.h"
//*KEND.
ClassImp(TGString)
ClassImp(TGHotString)
//______________________________________________________________________________
void TGString::Draw(Drawable_t id, GContext_t gc, Int_t x, Int_t y)
{
// Draw string.
gGXW->DrawString(id, gc, x, y, fString.Data(), fString.Length());
}
//______________________________________________________________________________
void TGString::DrawWrapped(Drawable_t id, GContext_t gc,
Int_t x, Int_t y, UInt_t w, FontStruct_t font)
{
// Draw a string in a column with width w. If string is longer than
// w wrap it to next line.
const char *p = fString.Data();
const char *prev = p;
const char *chunk = p;
int tw, th, len = fString.Length();
tw = gGXW->TextWidth(font, p, len);
if (tw <= (int)w) {
gGXW->DrawString(id, gc, x, y, p, len);
return;
}
int max_ascent, max_descent;
gGXW->GetFontProperties(font, max_ascent, max_descent);
th = max_ascent + max_descent + 1;
while(1) {
p = strchr(p, ' ');
if (p == 0) {
if (chunk) gGXW->DrawString(id, gc, x, y, chunk, strlen(chunk));
break;
}
tw = gGXW->TextWidth(font, chunk, p-chunk);
if (tw > (int)w) {
if (prev == chunk)
prev = ++p;
else
p = prev;
gGXW->DrawString(id, gc, x, y, chunk, prev-chunk-1);
chunk = prev;
y += th;
} else {
prev = ++p;
}
}
}
//______________________________________________________________________________
Int_t TGString::GetLines(FontStruct_t font, UInt_t w)
{
// Get number of lines of width w the string would take using a certain font.
const char *p = fString.Data();
const char *prev = p;
const char *chunk = p;
int tw, nlines, len = fString.Length();
nlines = 1;
tw = gGXW->TextWidth(font, p, len);
if (tw <= (int)w) return nlines;
while(1) {
p = strchr(p, ' ');
if (p == 0) break;
tw = gGXW->TextWidth(font, chunk, p-chunk);
if (tw > (int)w) {
if (prev == chunk)
chunk = prev = ++p;
else
p = chunk = prev;
++nlines;
} else {
prev = ++p;
}
}
return nlines;
}
//______________________________________________________________________________
TGHotString::TGHotString(const char *s) : TGString(s)
{
// Create a hot string.
char *dup = StrDup(fString.Data());
char *p;
fLastGC = 0;
fOff1 = fOff2 = 0;
fHotChar = 0;
fHotPos = 0; // No hotkey defaults the offset to zero
for (p = dup; *p; p++) {
if (*p == '&') {
if (p[1] == '&') { // escaped & ?
// copy the string down over it
for (char *tmp = p; *tmp; tmp++)
tmp[0] = tmp[1];
continue; // and skip to the key char
}
// hot key marker - calculate the offset value
fHotPos = (p - dup) + 1;
fHotChar = p[1];
for (; *p; p++) p[0] = p[1]; // copy down
break; // allow only one hotkey per item
}
}
fString = dup;
delete [] dup;
}
//______________________________________________________________________________
void TGHotString::Draw(Drawable_t id, GContext_t gc, Int_t x, Int_t y)
{
// Draw a hot string and underline the hot character.
gGXW->DrawString(id, gc, x, y, fString.Data(), fString.Length());
DrawHotChar(id, gc, x, y);
}
//______________________________________________________________________________
void TGHotString::DrawWrapped(Drawable_t id, GContext_t gc,
Int_t x, Int_t y, UInt_t w, FontStruct_t font)
{
// Draw a hot string in a column with width w. If string is longer than
// w wrap it to next line.
const char *p = fString.Data();
const char *prev = p;
const char *chunk = p;
int tw, th, len = fString.Length();
tw = gGXW->TextWidth(font, p, len);
if (tw <= (int)w) {
gGXW->DrawString(id, gc, x, y, p, len);
DrawHotChar(id, gc, x, y);
return;
}
int max_ascent, max_descent;
gGXW->GetFontProperties(font, max_ascent, max_descent);
th = max_ascent + max_descent + 1;
int pcnt = 0;
while(1) {
p = strchr(p, ' ');
if (p == 0) {
if (chunk) {
gGXW->DrawString(id, gc, x, y, chunk, strlen(chunk));
if (fHotPos > pcnt && fHotPos <= pcnt+(int)strlen(chunk))
DrawHotChar(id, gc, x, y);
}
break;
}
tw = gGXW->TextWidth(font, chunk, p-chunk);
if (tw > (int)w) {
if (prev == chunk)
prev = ++p;
else
p = prev;
gGXW->DrawString(id, gc, x, y, chunk, prev-chunk-1);
if (fHotPos > pcnt && fHotPos <= pcnt+prev-chunk-1)
DrawHotChar(id, gc, x, y);
pcnt = prev-chunk-1;
chunk = prev;
y += th;
} else {
prev = ++p;
}
}
}
//______________________________________________________________________________
void TGHotString::DrawHotChar(Drawable_t id, GContext_t gc, Int_t x, Int_t y)
{
// Draw the underline under the hot character.
if (fHotPos > 0) {
if (fLastGC != gc) {
GCValues_t gcval;
FontStruct_t font;
gcval.fMask = kGCFont;
gGXW->GetGCValues(gc, gcval);
font = gGXW->GetFontStruct(gcval.fFont);
fOff1 = gGXW->TextWidth(font, fString.Data(), fHotPos-1); //+1;
fOff2 = gGXW->TextWidth(font, fString.Data(), fHotPos) - 1;
fLastGC = gc;
}
gGXW->DrawLine(id, gc, x+fOff1, y+1, x+fOff2, y+1);
}
}
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