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