kcharselect.cpp
/* This file is part of the KDE libraries
Copyright (C) 1999 Reginald Stadlbauer <reggie@kde.org>
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; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kcharselect.h"
#include "kcharselect.moc"
#include <qbrush.h>
#include <qcolor.h>
#include <qevent.h>
#include <qfont.h>
#include <qfontdatabase.h>
#include <qhbox.h>
#include <qkeycode.h>
#include <qlabel.h>
#include <qpainter.h>
#include <qpen.h>
#include <qregexp.h>
#include <qstyle.h>
#include <qtooltip.h>
#include <qvalidator.h>
#include <kapplication.h>
#include <kdebug.h>
#include <kdialog.h>
#include <klineedit.h>
#include <klocale.h>
class KCharSelect::KCharSelectPrivate
{
public:
QLineEdit *unicodeLine;
};
QFontDatabase * KCharSelect::fontDataBase = 0;
void KCharSelect::cleanupFontDatabase()
{
delete fontDataBase;
fontDataBase = 0;
}
/******************************************************************/
/* Class: KCharSelectTable */
/******************************************************************/
//==================================================================
KCharSelectTable::KCharSelectTable( QWidget *parent, const char *name, const QString &_font,
const QChar &_chr, int _tableNum )
: QGridView( parent, name ), vFont( _font ), vChr( _chr ),
vTableNum( _tableNum ), vPos( 0, 0 ), focusItem( _chr ), focusPos( 0, 0 ), d(0)
{
setBackgroundColor( colorGroup().base() );
setCellWidth( 20 );
setCellHeight( 25 );
setNumCols( 32 );
setNumRows( 8 );
repaintContents( false );
setToolTips();
setFocusPolicy( QWidget::StrongFocus );
setBackgroundMode( QWidget::NoBackground );
}
//==================================================================
void KCharSelectTable::setFont( const QString &_font )
{
vFont = _font;
repaintContents( false );
setToolTips();
}
//==================================================================
void KCharSelectTable::setChar( const QChar &_chr )
{
vChr = _chr;
repaintContents( false );
}
//==================================================================
void KCharSelectTable::setTableNum( int _tableNum )
{
focusItem = QChar( _tableNum * 256 );
vTableNum = _tableNum;
repaintContents( false );
setToolTips();
}
//==================================================================
QSize KCharSelectTable::sizeHint() const
{
int w = cellWidth();
int h = cellHeight();
w *= numCols();
h *= numRows();
return QSize( w, h );
}
//==================================================================
void KCharSelectTable::resizeEvent( QResizeEvent * e )
{
const int new_w = (e->size().width() - 2*(margin()+frameWidth())) / numCols();
const int new_h = (e->size().height() - 2*(margin()+frameWidth())) / numRows();
if( new_w != cellWidth())
setCellWidth( new_w );
if( new_h != cellHeight())
setCellHeight( new_h );
setToolTips();
}
//==================================================================
void KCharSelectTable::paintCell( class QPainter* p, int row, int col )
{
const int w = cellWidth();
const int h = cellHeight();
const int x2 = w - 1;
const int y2 = h - 1;
//if( row == 0 && col == 0 ) {
// printf("Repaint %d\n", temp++);
// fflush( stdout );
// }
QFont font = QFont( vFont );
font.setPixelSize( int(.7 * h) );
unsigned short c = vTableNum * 256;
c += row * numCols();
c += col;
if ( c == vChr.unicode() ) {
p->setBrush( QBrush( colorGroup().highlight() ) );
p->setPen( NoPen );
p->drawRect( 0, 0, w, h );
p->setPen( colorGroup().highlightedText() );
vPos = QPoint( col, row );
} else {
QFontMetrics fm = QFontMetrics( font );
if( fm.inFont( c ) )
p->setBrush( QBrush( colorGroup().base() ) );
else
p->setBrush( QBrush( colorGroup().button() ) );
p->setPen( NoPen );
p->drawRect( 0, 0, w, h );
p->setPen( colorGroup().text() );
}
if ( c == focusItem.unicode() && hasFocus() ) {
style().drawPrimitive( QStyle::PE_FocusRect, p, QRect( 2, 2, w - 4, h - 4 ),
colorGroup() );
focusPos = QPoint( col, row );
}
p->setFont( font );
p->drawText( 0, 0, x2, y2, AlignHCenter | AlignVCenter, QString( QChar( c ) ) );
p->setPen( colorGroup().text() );
p->drawLine( x2, 0, x2, y2 );
p->drawLine( 0, y2, x2, y2 );
if ( row == 0 )
p->drawLine( 0, 0, x2, 0 );
if ( col == 0 )
p->drawLine( 0, 0, 0, y2 );
}
//==================================================================
void KCharSelectTable::mouseMoveEvent( QMouseEvent *e )
{
const int row = rowAt( e->y() );
const int col = columnAt( e->x() );
if ( row >= 0 && row < numRows() && col >= 0 && col < numCols() ) {
const QPoint oldPos = vPos;
vPos.setX( col );
vPos.setY( row );
vChr = QChar( vTableNum * 256 + numCols() * vPos.y() + vPos.x() );
const QPoint oldFocus = focusPos;
focusPos = vPos;
focusItem = vChr;
repaintCell( oldFocus.y(), oldFocus.x(), true );
repaintCell( oldPos.y(), oldPos.x(), true );
repaintCell( vPos.y(), vPos.x(), true );
emit highlighted( vChr );
emit highlighted();
emit focusItemChanged( focusItem );
emit focusItemChanged();
}
}
//==================================================================
void KCharSelectTable::keyPressEvent( QKeyEvent *e )
{
switch ( e->key() ) {
case Key_Left:
gotoLeft();
break;
case Key_Right:
gotoRight();
break;
case Key_Up:
gotoUp();
break;
case Key_Down:
gotoDown();
break;
case Key_Next:
emit tableDown();
break;
case Key_Prior:
emit tableUp();
break;
case Key_Space:
emit activated( ' ' );
emit activated();
emit highlighted( ' ' );
emit highlighted();
break;
case Key_Enter: case Key_Return: {
const QPoint oldPos = vPos;
vPos = focusPos;
vChr = focusItem;
repaintCell( oldPos.y(), oldPos.x(), true );
repaintCell( vPos.y(), vPos.x(), true );
emit activated( vChr );
emit activated();
emit highlighted( vChr );
emit highlighted();
} break;
}
}
//==================================================================
void KCharSelectTable::gotoLeft()
{
if ( focusPos.x() > 0 ) {
const QPoint oldPos = focusPos;
focusPos.setX( focusPos.x() - 1 );
focusItem = QChar( vTableNum * 256 + numCols() * focusPos.y() + focusPos.x() );
repaintCell( oldPos.y(), oldPos.x(), true );
repaintCell( focusPos.y(), focusPos.x(), true );
emit focusItemChanged( vChr );
emit focusItemChanged();
}
}
//==================================================================
void KCharSelectTable::gotoRight()
{
if ( focusPos.x() < numCols()-1 ) {
const QPoint oldPos = focusPos;
focusPos.setX( focusPos.x() + 1 );
focusItem = QChar( vTableNum * 256 + numCols() * focusPos.y() + focusPos.x() );
repaintCell( oldPos.y(), oldPos.x(), true );
repaintCell( focusPos.y(), focusPos.x(), true );
emit focusItemChanged( vChr );
emit focusItemChanged();
}
}
//==================================================================
void KCharSelectTable::gotoUp()
{
if ( focusPos.y() > 0 ) {
const QPoint oldPos = focusPos;
focusPos.setY( focusPos.y() - 1 );
focusItem = QChar( vTableNum * 256 + numCols() * focusPos.y() + focusPos.x() );
repaintCell( oldPos.y(), oldPos.x(), true );
repaintCell( focusPos.y(), focusPos.x(), true );
emit focusItemChanged( vChr );
emit focusItemChanged();
}
}
//==================================================================
void KCharSelectTable::gotoDown()
{
if ( focusPos.y() < numRows()-1 ) {
const QPoint oldPos = focusPos;
focusPos.setY( focusPos.y() + 1 );
focusItem = QChar( vTableNum * 256 + numCols() * focusPos.y() + focusPos.x() );
repaintCell( oldPos.y(), oldPos.x(), true );
repaintCell( focusPos.y(), focusPos.x(), true );
emit focusItemChanged( vChr );
emit focusItemChanged();
}
}
//==================================================================
void KCharSelectTable::setToolTips()
{
const int rowCount = numRows();
const int colCount = numCols();
for( int i=0 ; i< rowCount; ++i )
{
for( int j=0; j< colCount; ++j )
{
const QRect r( cellWidth()*j, cellHeight()*i, cellWidth(), cellHeight() );
QToolTip::remove(this,r);
const ushort uni = vTableNum * 256 + numCols()*i + j;
QString s;
s.sprintf( "%04X", uint( uni ) );
QString character; // Character (which sometimes need to be escaped)
switch ( uni )
{
case 0x3c: character = "&lt;"; break;
case 0x3e: character = "&gt;"; break;
case 0x26: character = "&amp;"; break;
case 0x27: character = "&apos;"; break;
case 0x22: character = "&quot;"; break;
default: character = QChar( uni ); break;
}
QToolTip::add(this, r, i18n( "Character","<qt><font size=\"+4\" face=\"%1\">%2</font><br>Unicode code point: U+%3<br>(In decimal: %4)<br>(Character: %5)</qt>" ).arg( vFont ).arg( character ).arg( s ).arg( uni ).arg( character ) );
}
}
}
/******************************************************************/
/* Class: KCharSelect */
/******************************************************************/
//==================================================================
KCharSelect::KCharSelect( QWidget *parent, const char *name, const QString &_font, const QChar &_chr, int _tableNum )
: QVBox( parent, name ), d(new KCharSelectPrivate)
{
setSpacing( KDialog::spacingHint() );
QHBox* const bar = new QHBox( this );
bar->setSpacing( KDialog::spacingHint() );
QLabel* const lFont = new QLabel( i18n( "Font:" ), bar );
lFont->resize( lFont->sizeHint() );
lFont->setAlignment( Qt::AlignRight | Qt::AlignVCenter );
lFont->setMaximumWidth( lFont->sizeHint().width() );
fontCombo = new QComboBox( true, bar );
fillFontCombo();
fontCombo->resize( fontCombo->sizeHint() );
connect( fontCombo, SIGNAL( activated( const QString & ) ), this, SLOT( fontSelected( const QString & ) ) );
QLabel* const lTable = new QLabel( i18n( "Table:" ), bar );
lTable->resize( lTable->sizeHint() );
lTable->setAlignment( Qt::AlignRight | Qt::AlignVCenter );
lTable->setMaximumWidth( lTable->sizeHint().width() );
tableSpinBox = new QSpinBox( 0, 255, 1, bar );
tableSpinBox->resize( tableSpinBox->sizeHint() );
connect( tableSpinBox, SIGNAL( valueChanged( int ) ), this, SLOT( tableChanged( int ) ) );
QLabel* const lUnicode = new QLabel( i18n( "&Unicode code point:" ), bar );
lUnicode->resize( lUnicode->sizeHint() );
lUnicode->setAlignment( Qt::AlignRight | Qt::AlignVCenter );
lUnicode->setMaximumWidth( lUnicode->sizeHint().width() );
const QRegExp rx( "[a-fA-F0-9]{1,4}" );
QValidator* const validator = new QRegExpValidator( rx, this );
d->unicodeLine = new KLineEdit( bar );
d->unicodeLine->setValidator(validator);
lUnicode->setBuddy(d->unicodeLine);
d->unicodeLine->resize( d->unicodeLine->sizeHint() );
slotUpdateUnicode(_chr);
connect( d->unicodeLine, SIGNAL( returnPressed() ), this, SLOT( slotUnicodeEntered() ) );
charTable = new KCharSelectTable( this, name, _font.isEmpty() ? QVBox::font().family() : _font, _chr, _tableNum );
const QSize sz( charTable->contentsWidth() + 4 ,
charTable->contentsHeight() + 4 );
charTable->resize( sz );
//charTable->setMaximumSize( sz );
charTable->setMinimumSize( sz );
charTable->setHScrollBarMode( QScrollView::AlwaysOff );
charTable->setVScrollBarMode( QScrollView::AlwaysOff );
setFont( _font.isEmpty() ? QVBox::font().family() : _font );
setTableNum( _tableNum );
connect( charTable, SIGNAL( highlighted( const QChar & ) ), this, SLOT( slotUpdateUnicode( const QChar & ) ) );
connect( charTable, SIGNAL( highlighted( const QChar & ) ), this, SLOT( charHighlighted( const QChar & ) ) );
connect( charTable, SIGNAL( highlighted() ), this, SLOT( charHighlighted() ) );
connect( charTable, SIGNAL( activated( const QChar & ) ), this, SLOT( charActivated( const QChar & ) ) );
connect( charTable, SIGNAL( activated() ), this, SLOT( charActivated() ) );
connect( charTable, SIGNAL( focusItemChanged( const QChar & ) ),
this, SLOT( charFocusItemChanged( const QChar & ) ) );
connect( charTable, SIGNAL( focusItemChanged() ), this, SLOT( charFocusItemChanged() ) );
connect( charTable, SIGNAL( tableUp() ), this, SLOT( charTableUp() ) );
connect( charTable, SIGNAL( tableDown() ), this, SLOT( charTableDown() ) );
connect( charTable, SIGNAL(doubleClicked()),this,SLOT(slotDoubleClicked()));
setFocusPolicy( QWidget::StrongFocus );
setFocusProxy( charTable );
}
KCharSelect::~KCharSelect()
{
delete d;
}
//==================================================================
QSize KCharSelect::sizeHint() const
{
return QVBox::sizeHint();
}
//==================================================================
void KCharSelect::setFont( const QString &_font )
{
const QValueList<QString>::Iterator it = fontList.find( _font );
if ( it != fontList.end() ) {
QValueList<QString>::Iterator it2 = fontList.begin();
int pos = 0;
for ( ; it != it2; ++it2, ++pos);
fontCombo->setCurrentItem( pos );
charTable->setFont( _font );
}
else
kdWarning() << "Can't find Font: " << _font << endl;
}
//==================================================================
void KCharSelect::setChar( const QChar &_chr )
{
charTable->setChar( _chr );
slotUpdateUnicode( _chr );
}
//==================================================================
void KCharSelect::setTableNum( int _tableNum )
{
tableSpinBox->setValue( _tableNum );
charTable->setTableNum( _tableNum );
}
//==================================================================
void KCharSelect::fillFontCombo()
{
if ( !fontDataBase ) {
fontDataBase = new QFontDatabase();
qAddPostRoutine( cleanupFontDatabase );
}
fontList=fontDataBase->families();
fontCombo->insertStringList( fontList );
}
//==================================================================
void KCharSelect::fontSelected( const QString &_font )
{
charTable->setFont( _font );
emit fontChanged( _font );
}
//==================================================================
void KCharSelect::tableChanged( int _value )
{
charTable->setTableNum( _value );
}
//==================================================================
void KCharSelect::slotUnicodeEntered( )
{
const QString s = d->unicodeLine->text();
if (s.isEmpty())
return;
bool ok;
const int uc = s.toInt(&ok, 16);
if (!ok)
return;
const int table = uc / 256;
charTable->setTableNum( table );
tableSpinBox->setValue(table);
const QChar ch(uc);
charTable->setChar( ch );
charActivated( ch );
}
void KCharSelect::slotUpdateUnicode( const QChar &c )
{
const int uc = c.unicode();
QString s;
s.sprintf("%04X", uc);
d->unicodeLine->setText(s);
}
void KCharSelectTable::virtual_hook( int, void*)
{ /*BASE::virtual_hook( id, data );*/ }
void KCharSelect::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
klocale.h
KCharSelect::setChar
virtual void setChar(const QChar &chr)
Sets the currently selected character to chr.
Definition: kcharselect.cpp:476
KDialog::spacingHint
static int spacingHint()
Return the number of pixels you shall use between widgets inside a dialog according to the KDE standa...
Definition: kdialog.cpp:103
kdWarning
kdbgstream kdWarning(int area=0)
KCharSelect::KCharSelect
KCharSelect(QWidget *parent, const char *name, const QString &font=QString::null, const QChar &chr= ' ', int tableNum=0)
Constructor.
Definition: kcharselect.cpp:376
KCharSelect::setFont
virtual void setFont(const QString &font)
Sets the font which is displayed to font.
Definition: kcharselect.cpp:461
KLineEdit
An enhanced QLineEdit widget for inputting text.
Definition: klineedit.h:145
endl
kndbgstream & endl(kndbgstream &s)
KCharSelect::setTableNum
virtual void setTableNum(int tableNum)
Sets the currently displayed table to tableNum.
Definition: kcharselect.cpp:483
KCharSelectTable
Character selection table.
Definition: kcharselect.h:51
KCharSelect::sizeHint
virtual QSize sizeHint() const
Reimplemented.
Definition: kcharselect.cpp:455

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