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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of an example program for TQt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "fontdisplayer.h"
#include <qapplication.h>
#include <qslider.h>
#include <qspinbox.h>
#include <qpainter.h>
#include <qtoolbar.h>
#include <qstatusbar.h>
#include <qlabel.h>
#include <qpushbutton.h>
#include <qfontdialog.h>
#include <stdlib.h>
FontRowTable::FontRowTable( TQWidget* parent, const char* name ) :
TQFrame(parent,name)
{
setBackgroundMode(PaletteBase);
setFrameStyle(Panel|Sunken);
setMargin(8);
setRow(0);
tablefont = TQApplication::font();
}
TQSize FontRowTable::sizeHint() const
{
return 24*cellSize()+TQSize(2,2)*(margin()+frameWidth());
}
TQSize FontRowTable::cellSize() const
{
TQFontMetrics fm = fontMetrics();
return TQSize( fm.maxWidth(), fm.lineSpacing()+1 );
}
void FontRowTable::paintEvent( TQPaintEvent* e )
{
TQFrame::paintEvent(e);
TQPainter p(this);
p.setClipRegion(e->region());
TQRect r = e->rect();
TQFontMetrics fm = fontMetrics();
int ml = frameWidth()+margin() + 1 + TQMAX(0,-fm.minLeftBearing());
int mt = frameWidth()+margin();
TQSize cell((width()-15-ml)/16,(height()-15-mt)/16);
if ( !cell.width() || !cell.height() )
return;
int mini = r.left() / cell.width();
int maxi = (r.right()+cell.width()-1) / cell.width();
int minj = r.top() / cell.height();
int maxj = (r.bottom()+cell.height()-1) / cell.height();
int h = fm.height();
TQColor body(255,255,192);
TQColor negative(255,192,192);
TQColor positive(192,192,255);
TQColor rnegative(255,128,128);
TQColor rpositive(128,128,255);
for (int j = minj; j<=maxj; j++) {
for (int i = mini; i<=maxi; i++) {
if ( i < 16 && j < 16 ) {
int x = i*cell.width();
int y = j*cell.height();
TQChar ch = TQChar(j*16+i,row);
if ( fm.inFont(ch) ) {
int w = fm.width(ch);
int l = fm.leftBearing(ch);
int r = fm.rightBearing(ch);
x += ml;
y += mt+h;
p.fillRect(x,y,w,-h,body);
if ( w ) {
if ( l ) {
p.fillRect(x+(l>0?0:l), y-h/2, abs(l),-h/2,
l < 0 ? negative : positive);
}
if ( r ) {
p.fillRect(x+w-(r>0?r:0),y+2, abs(r),-h/2,
r < 0 ? rnegative : rpositive);
}
}
TQString s;
s += ch;
p.setPen(TQPen(TQt::black));
p.drawText(x,y,s);
}
}
}
}
}
void FontRowTable::setRow(int r)
{
row = r;
TQFontMetrics fm = fontMetrics();
TQFontInfo fi = fontInfo();
TQString str = TQString("%1 %2pt%3%4 mLB=%5 mRB=%6 mW=%7")
.arg(fi.family())
.arg(fi.pointSize())
.arg(fi.bold() ? " bold" : "")
.arg(fi.italic() ? " italic" : "")
.arg(fm.minLeftBearing())
.arg(fm.minRightBearing())
.arg(fm.maxWidth());
emit fontInformation(str);
update();
}
void FontRowTable::chooseFont()
{
bool ok;
TQFont oldfont = tablefont;
tablefont = TQFontDialog::getFont(&ok, oldfont, this);
if (ok)
setFont(tablefont);
else
tablefont = oldfont;
}
FontDisplayer::FontDisplayer( TQWidget* parent, const char* name ) :
TQMainWindow(parent,name)
{
FontRowTable* table = new FontRowTable(this);
TQToolBar* controls = new TQToolBar(this);
(void) new TQLabel(tr("Row:"), controls);
TQSpinBox *row = new TQSpinBox(0,255,1,controls);
controls->addSeparator();
TQPushButton *fontbutton = new TQPushButton(tr("Font..."), controls);
connect(row,SIGNAL(valueChanged(int)),table,SLOT(setRow(int)));
connect(fontbutton, SIGNAL(clicked()), table, SLOT(chooseFont()));
connect(table,SIGNAL(fontInformation(const TQString&)),
statusBar(),SLOT(message(const TQString&)));
table->setRow(0);
setCentralWidget(table);
}
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