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tqt3/examples/textedit/textedit.cpp

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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 "textedit.h"
#include <ntqtextedit.h>
#include <ntqaction.h>
#include <ntqmenubar.h>
#include <ntqpopupmenu.h>
#include <ntqtoolbar.h>
#include <ntqtabwidget.h>
#include <ntqapplication.h>
#include <ntqfontdatabase.h>
#include <ntqcombobox.h>
#include <ntqlineedit.h>
#include <ntqfileinfo.h>
#include <ntqfile.h>
#include <ntqfiledialog.h>
#include <ntqprinter.h>
#include <ntqpaintdevicemetrics.h>
#include <ntqsimplerichtext.h>
#include <ntqcolordialog.h>
#include <ntqpainter.h>
TextEdit::TextEdit( TQWidget *parent, const char *name )
: TQMainWindow( parent, name )
{
setupFileActions();
setupEditActions();
setupTextActions();
tabWidget = new TQTabWidget( this );
connect( tabWidget, SIGNAL( currentChanged( TQWidget * ) ),
this, SLOT( editorChanged( TQWidget * ) ) );
setCentralWidget( tabWidget );
if ( tqApp->argc() == 1 ) {
load( "example.html" );
} else {
for ( int i = 1; i < tqApp->argc(); ++i )
load( tqApp->argv()[ i ] );
}
}
void TextEdit::setupFileActions()
{
TQToolBar *tb = new TQToolBar( this );
tb->setLabel( "File Actions" );
TQPopupMenu *menu = new TQPopupMenu( this );
menuBar()->insertItem( tr( "&File" ), menu );
TQAction *a;
a = new TQAction( TQPixmap::fromMimeSource( "filenew.xpm" ), tr( "&New..." ), CTRL + Key_N, this, "fileNew" );
connect( a, SIGNAL( activated() ), this, SLOT( fileNew() ) );
a->addTo( tb );
a->addTo( menu );
a = new TQAction( TQPixmap::fromMimeSource( "fileopen.xpm" ), tr( "&Open..." ), CTRL + Key_O, this, "fileOpen" );
connect( a, SIGNAL( activated() ), this, SLOT( fileOpen() ) );
a->addTo( tb );
a->addTo( menu );
menu->insertSeparator();
a = new TQAction( TQPixmap::fromMimeSource( "filesave.xpm" ), tr( "&Save..." ), CTRL + Key_S, this, "fileSave" );
connect( a, SIGNAL( activated() ), this, SLOT( fileSave() ) );
a->addTo( tb );
a->addTo( menu );
a = new TQAction( tr( "Save &As..." ), 0, this, "fileSaveAs" );
connect( a, SIGNAL( activated() ), this, SLOT( fileSaveAs() ) );
a->addTo( menu );
menu->insertSeparator();
a = new TQAction( TQPixmap::fromMimeSource( "fileprint.xpm" ), tr( "&Print..." ), CTRL + Key_P, this, "filePrint" );
connect( a, SIGNAL( activated() ), this, SLOT( filePrint() ) );
a->addTo( tb );
a->addTo( menu );
a = new TQAction( tr( "&Close" ), 0, this, "fileClose" );
connect( a, SIGNAL( activated() ), this, SLOT( fileClose() ) );
a->addTo( menu );
a = new TQAction( tr( "E&xit" ), 0, this, "fileExit" );
connect( a, SIGNAL( activated() ), this, SLOT( fileExit() ) );
a->addTo( menu );
}
void TextEdit::setupEditActions()
{
TQToolBar *tb = new TQToolBar( this );
tb->setLabel( "Edit Actions" );
TQPopupMenu *menu = new TQPopupMenu( this );
menuBar()->insertItem( tr( "&Edit" ), menu );
TQAction *a;
a = new TQAction( TQPixmap::fromMimeSource( "editundo.xpm" ), tr( "&Undo" ), CTRL + Key_Z, this, "editUndo" );
connect( a, SIGNAL( activated() ), this, SLOT( editUndo() ) );
a->addTo( tb );
a->addTo( menu );
a = new TQAction( TQPixmap::fromMimeSource( "editredo.xpm" ), tr( "&Redo" ), CTRL + Key_Y, this, "editRedo" );
connect( a, SIGNAL( activated() ), this, SLOT( editRedo() ) );
a->addTo( tb );
a->addTo( menu );
menu->insertSeparator();
a = new TQAction( TQPixmap::fromMimeSource( "editcopy.xpm" ), tr( "&Copy" ), CTRL + Key_C, this, "editCopy" );
connect( a, SIGNAL( activated() ), this, SLOT( editCopy() ) );
a->addTo( tb );
a->addTo( menu );
a = new TQAction( TQPixmap::fromMimeSource( "editcut.xpm" ), tr( "Cu&t" ), CTRL + Key_X, this, "editCut" );
connect( a, SIGNAL( activated() ), this, SLOT( editCut() ) );
a->addTo( tb );
a->addTo( menu );
a = new TQAction( TQPixmap::fromMimeSource( "editpaste.xpm" ), tr( "&Paste" ), CTRL + Key_V, this, "editPaste" );
connect( a, SIGNAL( activated() ), this, SLOT( editPaste() ) );
a->addTo( tb );
a->addTo( menu );
}
void TextEdit::setupTextActions()
{
TQToolBar *tb = new TQToolBar( this );
tb->setLabel( "Format Actions" );
TQPopupMenu *menu = new TQPopupMenu( this );
menuBar()->insertItem( tr( "F&ormat" ), menu );
comboFont = new TQComboBox( TRUE, tb );
TQFontDatabase db;
comboFont->insertStringList( db.families() );
connect( comboFont, SIGNAL( activated( const TQString & ) ),
this, SLOT( textFamily( const TQString & ) ) );
comboFont->lineEdit()->setText( TQApplication::font().family() );
comboSize = new TQComboBox( TRUE, tb );
TQValueList<int> sizes = db.standardSizes();
TQValueList<int>::Iterator it = sizes.begin();
for ( ; it != sizes.end(); ++it )
comboSize->insertItem( TQString::number( *it ) );
connect( comboSize, SIGNAL( activated( const TQString & ) ),
this, SLOT( textSize( const TQString & ) ) );
comboSize->lineEdit()->setText( TQString::number( TQApplication::font().pointSize() ) );
actionTextBold = new TQAction( TQPixmap::fromMimeSource( "textbold.xpm" ), tr( "&Bold" ), CTRL + Key_B, this, "textBold" );
connect( actionTextBold, SIGNAL( activated() ), this, SLOT( textBold() ) );
actionTextBold->addTo( tb );
actionTextBold->addTo( menu );
actionTextBold->setToggleAction( TRUE );
actionTextItalic = new TQAction( TQPixmap::fromMimeSource( "textitalic.xpm" ), tr( "&Italic" ), CTRL + Key_I, this, "textItalic" );
connect( actionTextItalic, SIGNAL( activated() ), this, SLOT( textItalic() ) );
actionTextItalic->addTo( tb );
actionTextItalic->addTo( menu );
actionTextItalic->setToggleAction( TRUE );
actionTextUnderline = new TQAction( TQPixmap::fromMimeSource( "textunder.xpm" ), tr( "&Underline" ), CTRL + Key_U, this, "textUnderline" );
connect( actionTextUnderline, SIGNAL( activated() ), this, SLOT( textUnderline() ) );
actionTextUnderline->addTo( tb );
actionTextUnderline->addTo( menu );
actionTextUnderline->setToggleAction( TRUE );
menu->insertSeparator();
TQActionGroup *grp = new TQActionGroup( this );
connect( grp, SIGNAL( selected( TQAction* ) ), this, SLOT( textAlign( TQAction* ) ) );
actionAlignLeft = new TQAction( TQPixmap::fromMimeSource( "textleft.xpm" ), tr( "&Left" ), CTRL + Key_L, grp, "textLeft" );
actionAlignLeft->setToggleAction( TRUE );
actionAlignCenter = new TQAction( TQPixmap::fromMimeSource( "textcenter.xpm" ), tr( "C&enter" ), CTRL + Key_E, grp, "textCenter" );
actionAlignCenter->setToggleAction( TRUE );
actionAlignRight = new TQAction( TQPixmap::fromMimeSource( "textright.xpm" ), tr( "&Right" ), CTRL + Key_R, grp, "textRight" );
actionAlignRight->setToggleAction( TRUE );
actionAlignJustify = new TQAction( TQPixmap::fromMimeSource( "textjustify.xpm" ), tr( "&Justify" ), CTRL + Key_J, grp, "textjustify" );
actionAlignJustify->setToggleAction( TRUE );
grp->addTo( tb );
grp->addTo( menu );
menu->insertSeparator();
TQPixmap pix( 16, 16 );
pix.fill( black );
actionTextColor = new TQAction( pix, tr( "&Color..." ), 0, this, "textColor" );
connect( actionTextColor, SIGNAL( activated() ), this, SLOT( textColor() ) );
actionTextColor->addTo( tb );
actionTextColor->addTo( menu );
}
void TextEdit::load( const TQString &f )
{
if ( !TQFile::exists( f ) )
return;
TQTextEdit *edit = new TQTextEdit( tabWidget );
edit->setTextFormat( RichText );
doConnections( edit );
tabWidget->addTab( edit, TQFileInfo( f ).fileName() );
TQFile file( f );
if ( !file.open( IO_ReadOnly ) )
return;
TQTextStream ts( &file );
TQString txt = ts.read();
if ( !TQStyleSheet::mightBeRichText( txt ) )
txt = TQStyleSheet::convertFromPlainText( txt, TQStyleSheetItem::WhiteSpacePre );
edit->setText( txt );
tabWidget->showPage( edit );
edit->viewport()->setFocus();
filenames.replace( edit, f );
}
TQTextEdit *TextEdit::currentEditor() const
{
if ( tabWidget->currentPage() &&
tabWidget->currentPage()->inherits( "TQTextEdit" ) )
return (TQTextEdit*)tabWidget->currentPage();
return 0;
}
void TextEdit::doConnections( TQTextEdit *e )
{
connect( e, SIGNAL( currentFontChanged( const TQFont & ) ),
this, SLOT( fontChanged( const TQFont & ) ) );
connect( e, SIGNAL( currentColorChanged( const TQColor & ) ),
this, SLOT( colorChanged( const TQColor & ) ) );
connect( e, SIGNAL( currentAlignmentChanged( int ) ),
this, SLOT( alignmentChanged( int ) ) );
}
void TextEdit::fileNew()
{
TQTextEdit *edit = new TQTextEdit( tabWidget );
edit->setTextFormat( RichText );
doConnections( edit );
tabWidget->addTab( edit, tr( "noname" ) );
tabWidget->showPage( edit );
edit->viewport()->setFocus();
}
void TextEdit::fileOpen()
{
TQString fn = TQFileDialog::getOpenFileName( TQString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this );
if ( !fn.isEmpty() )
load( fn );
}
void TextEdit::fileSave()
{
if ( !currentEditor() )
return;
TQString fn;
if ( filenames.find( currentEditor() ) == filenames.end() ) {
fileSaveAs();
} else {
TQFile file( *filenames.find( currentEditor() ) );
if ( !file.open( IO_WriteOnly ) )
return;
TQTextStream ts( &file );
ts << currentEditor()->text();
}
}
void TextEdit::fileSaveAs()
{
if ( !currentEditor() )
return;
TQString fn = TQFileDialog::getSaveFileName( TQString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this );
if ( !fn.isEmpty() ) {
filenames.replace( currentEditor(), fn );
fileSave();
tabWidget->setTabLabel( currentEditor(), TQFileInfo( fn ).fileName() );
}
}
void TextEdit::filePrint()
{
if ( !currentEditor() )
return;
#ifndef QT_NO_PRINTER
TQPrinter printer( TQPrinter::HighResolution );
printer.setFullPage(TRUE);
if ( printer.setup( this ) ) {
TQPainter p( &printer );
// Check that there is a valid device to print to.
if ( !p.device() ) return;
TQPaintDeviceMetrics metrics( p.device() );
int dpiy = metrics.logicalDpiY();
int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
TQRect view( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );
TQFont font( currentEditor()->TQWidget::font() );
font.setPointSize( 10 ); // we define 10pt to be a nice base size for printing
TQSimpleRichText richText( currentEditor()->text(), font,
currentEditor()->context(),
currentEditor()->styleSheet(),
currentEditor()->mimeSourceFactory(),
view.height() );
richText.setWidth( &p, view.width() );
int page = 1;
do {
richText.draw( &p, margin, margin, view, colorGroup() );
view.moveBy( 0, view.height() );
p.translate( 0 , -view.height() );
p.setFont( font );
p.drawText( view.right() - p.fontMetrics().width( TQString::number( page ) ),
view.bottom() + p.fontMetrics().ascent() + 5, TQString::number( page ) );
if ( view.top() - margin >= richText.height() )
break;
printer.newPage();
page++;
} while (TRUE);
}
#endif
}
void TextEdit::fileClose()
{
delete currentEditor();
if ( currentEditor() )
currentEditor()->viewport()->setFocus();
}
void TextEdit::fileExit()
{
tqApp->quit();
}
void TextEdit::editUndo()
{
if ( !currentEditor() )
return;
currentEditor()->undo();
}
void TextEdit::editRedo()
{
if ( !currentEditor() )
return;
currentEditor()->redo();
}
void TextEdit::editCut()
{
if ( !currentEditor() )
return;
currentEditor()->cut();
}
void TextEdit::editCopy()
{
if ( !currentEditor() )
return;
currentEditor()->copy();
}
void TextEdit::editPaste()
{
if ( !currentEditor() )
return;
currentEditor()->paste();
}
void TextEdit::textBold()
{
if ( !currentEditor() )
return;
currentEditor()->setBold( actionTextBold->isOn() );
}
void TextEdit::textUnderline()
{
if ( !currentEditor() )
return;
currentEditor()->setUnderline( actionTextUnderline->isOn() );
}
void TextEdit::textItalic()
{
if ( !currentEditor() )
return;
currentEditor()->setItalic( actionTextItalic->isOn() );
}
void TextEdit::textFamily( const TQString &f )
{
if ( !currentEditor() )
return;
currentEditor()->setFamily( f );
currentEditor()->viewport()->setFocus();
}
void TextEdit::textSize( const TQString &p )
{
if ( !currentEditor() )
return;
currentEditor()->setPointSize( p.toInt() );
currentEditor()->viewport()->setFocus();
}
void TextEdit::textColor()
{
if ( !currentEditor() )
return;
TQColor col = TQColorDialog::getColor( currentEditor()->color(), this );
if ( !col.isValid() )
return;
currentEditor()->setColor( col );
TQPixmap pix( 16, 16 );
pix.fill( black );
actionTextColor->setIconSet( pix );
}
void TextEdit::textAlign( TQAction *a )
{
if ( !currentEditor() )
return;
if ( a == actionAlignLeft )
currentEditor()->setAlignment( AlignLeft );
else if ( a == actionAlignCenter )
currentEditor()->setAlignment( AlignHCenter );
else if ( a == actionAlignRight )
currentEditor()->setAlignment( AlignRight );
else if ( a == actionAlignJustify )
currentEditor()->setAlignment( AlignJustify );
}
void TextEdit::fontChanged( const TQFont &f )
{
comboFont->lineEdit()->setText( f.family() );
comboSize->lineEdit()->setText( TQString::number( f.pointSize() ) );
actionTextBold->setOn( f.bold() );
actionTextItalic->setOn( f.italic() );
actionTextUnderline->setOn( f.underline() );
}
void TextEdit::colorChanged( const TQColor &c )
{
TQPixmap pix( 16, 16 );
pix.fill( c );
actionTextColor->setIconSet( pix );
}
void TextEdit::alignmentChanged( int a )
{
if ( ( a == AlignAuto ) || ( a & AlignLeft ))
actionAlignLeft->setOn( TRUE );
else if ( ( a & AlignHCenter ) )
actionAlignCenter->setOn( TRUE );
else if ( ( a & AlignRight ) )
actionAlignRight->setOn( TRUE );
else if ( ( a & AlignJustify ) )
actionAlignJustify->setOn( TRUE );
}
void TextEdit::editorChanged( TQWidget * )
{
if ( !currentEditor() )
return;
fontChanged( currentEditor()->currentFont() );
colorChanged( currentEditor()->color() );
alignmentChanged( currentEditor()->alignment() );
}