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355 lines
9.1 KiB
355 lines
9.1 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 "qwerty.h"
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#include <ntqapplication.h>
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#include <ntqfile.h>
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#include <ntqfiledialog.h>
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#include <tqpopupmenu.h>
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#include <tqtextstream.h>
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#include <ntqpainter.h>
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#include <ntqmessagebox.h>
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#include <ntqpaintdevicemetrics.h>
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#include <tqptrlist.h>
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#include <ntqfontdialog.h>
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#include <tqtextcodec.h>
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const bool no_writing = FALSE;
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static TQPtrList<TQTextCodec> *codecList = 0;
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enum { Uni = 0, MBug = 1, Lat1 = 2, Local = 3, Guess = 4, Codec = 5 };
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Editor::Editor( TQWidget * parent , const char * name )
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: TQWidget( parent, name, WDestructiveClose )
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{
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m = new TQMenuBar( this, "menu" );
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TQPopupMenu * file = new TQPopupMenu();
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TQ_CHECK_PTR( file );
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m->insertItem( "&File", file );
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file->insertItem( "&New", this, TQ_SLOT(newDoc()), ALT+Key_N );
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file->insertItem( "&Open...", this, TQ_SLOT(load()), ALT+Key_O );
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file->insertItem( "&Save...", this, TQ_SLOT(save()), ALT+Key_S );
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file->insertSeparator();
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open_as = new TQPopupMenu();
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file->insertItem( "Open &As", open_as );
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save_as = new TQPopupMenu();
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file->insertItem( "Sa&ve As", save_as );
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file->insertItem( "Add &Encoding", this, TQ_SLOT(addEncoding()) );
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#ifndef TQT_NO_PRINTER
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file->insertSeparator();
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file->insertItem( "&Print...", this, TQ_SLOT(print()), ALT+Key_P );
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#endif
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file->insertSeparator();
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file->insertItem( "&Close", this, TQ_SLOT(close()),ALT+Key_W );
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file->insertItem( "&Quit", tqApp, TQ_SLOT(closeAllWindows()), ALT+Key_Q );
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connect( save_as, TQ_SIGNAL(activated(int)), this, TQ_SLOT(saveAsEncoding(int)) );
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connect( open_as, TQ_SIGNAL(activated(int)), this, TQ_SLOT(openAsEncoding(int)) );
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rebuildCodecList();
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TQPopupMenu * edit = new TQPopupMenu();
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TQ_CHECK_PTR( edit );
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m->insertItem( "&Edit", edit );
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edit->insertItem( "To &Uppercase", this, TQ_SLOT(toUpper()), ALT+Key_U );
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edit->insertItem( "To &Lowercase", this, TQ_SLOT(toLower()), ALT+Key_L );
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#ifndef TQT_NO_FONTDIALOG
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edit->insertSeparator();
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edit->insertItem( "&Select Font" , this, TQ_SLOT(font()), ALT+Key_T );
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#endif
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changed = FALSE;
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e = new TQMultiLineEdit( this, "editor" );
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connect( e, TQ_SIGNAL( textChanged() ), this, TQ_SLOT( textChanged() ) );
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// We use Unifont - if you have it installed you'll see all
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// Unicode character glyphs.
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//
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// Unifont only comes in one pixel size, so we cannot let
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// it change pixel size as the display DPI changes.
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//
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TQFont unifont("unifont",16,50); unifont.setPixelSize(16);
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e->setFont( unifont );
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e->setFocus();
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}
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Editor::~Editor()
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{
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}
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void Editor::font()
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{
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#ifndef TQT_NO_FONTDIALOG
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bool ok;
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TQFont f = TQFontDialog::getFont( &ok, e->font() );
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if ( ok ) {
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e->setFont( f );
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}
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#endif
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}
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void Editor::rebuildCodecList()
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{
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delete codecList;
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codecList = new TQPtrList<TQTextCodec>;
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TQTextCodec *codec;
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int i;
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for (i = 0; (codec = TQTextCodec::codecForIndex(i)); i++)
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codecList->append( codec );
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int n = codecList->count();
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for (int pm=0; pm<2; pm++) {
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TQPopupMenu* menu = pm ? open_as : save_as;
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menu->clear();
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TQString local = "Local (";
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local += TQTextCodec::codecForLocale()->name();
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local += ")";
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menu->insertItem( local, Local );
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menu->insertItem( "Unicode", Uni );
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menu->insertItem( "Latin1", Lat1 );
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menu->insertItem( "Microsoft Unicode", MBug );
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if ( pm )
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menu->insertItem( "[guess]", Guess );
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for ( i = 0; i < n; i++ )
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menu->insertItem( codecList->at(i)->name(), Codec + i );
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}
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}
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void Editor::newDoc()
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{
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Editor *ed = new Editor;
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if ( tqApp->desktop()->size().width() < 450
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|| tqApp->desktop()->size().height() < 450 ) {
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ed->showMaximized();
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} else {
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ed->resize( 400, 400 );
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ed->show();
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}
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}
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void Editor::load()
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{
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#ifndef TQT_NO_FILEDIALOG
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TQString fn = TQFileDialog::getOpenFileName( TQString::null, TQString::null, this );
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if ( !fn.isEmpty() )
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load( fn, -1 );
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#endif
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}
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void Editor::load( const TQString& fileName, int code )
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{
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TQFile f( fileName );
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if ( !f.open( IO_ReadOnly ) )
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return;
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e->setAutoUpdate( FALSE );
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TQTextStream t(&f);
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if ( code >= Codec )
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t.setCodec( codecList->at(code-Codec) );
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else if ( code == Uni )
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t.setEncoding( TQTextStream::Unicode );
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else if ( code == MBug )
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t.setEncoding( TQTextStream::UnicodeReverse );
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else if ( code == Lat1 )
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t.setEncoding( TQTextStream::Latin1 );
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else if ( code == Guess ) {
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TQFile f(fileName);
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f.open(IO_ReadOnly);
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char buffer[256];
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int l = 256;
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l=f.readBlock(buffer,l);
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TQTextCodec* codec = TQTextCodec::codecForContent(buffer, l);
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if ( codec ) {
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TQMessageBox::information(this,"Encoding",TQString("Codec: ")+codec->name());
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t.setCodec( codec );
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}
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}
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e->setText( t.read() );
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f.close();
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e->setAutoUpdate( TRUE );
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e->repaint();
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setCaption( fileName );
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changed = FALSE;
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}
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void Editor::openAsEncoding( int code )
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{
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#ifndef TQT_NO_FILEDIALOG
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//storing filename (proper save) is left as an exercise...
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TQString fn = TQFileDialog::getOpenFileName( TQString::null, TQString::null, this );
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if ( !fn.isEmpty() )
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(void) load( fn, code );
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#endif
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}
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bool Editor::save()
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{
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#ifndef TQT_NO_FILEDIALOG
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//storing filename (proper save) is left as an exercise...
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TQString fn = TQFileDialog::getSaveFileName( TQString::null, TQString::null, this );
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if ( !fn.isEmpty() )
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return saveAs( fn );
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return FALSE;
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#endif
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}
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void Editor::saveAsEncoding( int code )
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{
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#ifndef TQT_NO_FILEDIALOG
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//storing filename (proper save) is left as an exercise...
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TQString fn = TQFileDialog::getSaveFileName( TQString::null, TQString::null, this );
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if ( !fn.isEmpty() )
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(void) saveAs( fn, code );
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#endif
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}
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void Editor::addEncoding()
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{
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#ifndef TQT_NO_FILEDIALOG
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TQString fn = TQFileDialog::getOpenFileName( TQString::null, "*.map", this );
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if ( !fn.isEmpty() ) {
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TQFile f(fn);
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if (f.open(IO_ReadOnly)) {
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if (TQTextCodec::loadCharmap(&f)) {
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rebuildCodecList();
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} else {
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TQMessageBox::warning(0,"Charmap error",
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"The file did not contain a valid charmap.\n\n"
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"A charmap file should look like this:\n"
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" <code_set_name> thename\n"
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" <escape_char> /\n"
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" % alias thealias\n"
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" CHARMAP\n"
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" <tokenname> /x12 <U3456>\n"
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" <tokenname> /xAB/x12 <U0023>\n"
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" ...\n"
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" END CHARMAP\n"
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);
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}
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}
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}
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#endif
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}
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bool Editor::saveAs( const TQString& fileName, int code )
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{
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TQFile f( fileName );
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if ( no_writing || !f.open( IO_WriteOnly ) ) {
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TQMessageBox::warning(this,"I/O Error",
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TQString("The file could not be opened.\n\n")
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+fileName);
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return FALSE;
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}
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TQTextStream t(&f);
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if ( code >= Codec )
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t.setCodec( codecList->at(code-Codec) );
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else if ( code == Uni )
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t.setEncoding( TQTextStream::Unicode );
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else if ( code == MBug )
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t.setEncoding( TQTextStream::UnicodeReverse );
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else if ( code == Lat1 )
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t.setEncoding( TQTextStream::Latin1 );
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t << e->text();
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f.close();
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setCaption( fileName );
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changed = FALSE;
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return TRUE;
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}
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void Editor::print()
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{
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#ifndef TQT_NO_PRINTER
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if ( printer.setup(this) ) { // opens printer dialog
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printer.setFullPage(TRUE); // we'll set our own margins
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TQPainter p;
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p.begin( &printer ); // paint on printer
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p.setFont( e->font() );
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TQFontMetrics fm = p.fontMetrics();
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TQPaintDeviceMetrics metrics( &printer ); // need width/height
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// of printer surface
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const int MARGIN = metrics.logicalDpiX() / 2; // half-inch margin
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int yPos = MARGIN; // y position for each line
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for( int i = 0 ; i < e->numLines() ; i++ ) {
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if ( printer.aborted() )
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break;
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if ( yPos + fm.lineSpacing() > metrics.height() - MARGIN ) {
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// no more room on this page
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if ( !printer.newPage() ) // start new page
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break; // some error
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yPos = MARGIN; // back to top of page
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}
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p.drawText( MARGIN, yPos, metrics.width() - 2*MARGIN,
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fm.lineSpacing(), ExpandTabs, e->textLine( i ) );
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yPos += fm.lineSpacing();
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}
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p.end(); // send job to printer
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}
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#endif
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}
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void Editor::resizeEvent( TQResizeEvent * )
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{
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if ( e && m )
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e->setGeometry( 0, m->height(), width(), height() - m->height() );
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}
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void Editor::closeEvent( TQCloseEvent *event )
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{
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event->accept();
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if ( changed ) { // the text has been changed
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switch ( TQMessageBox::warning( this, "Qwerty",
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"Save changes to Document?",
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tr("&Yes"),
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tr("&No"),
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tr("Cancel"),
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0, 2) ) {
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case 0: // yes
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if ( save() )
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event->accept();
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else
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event->ignore();
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break;
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case 1: // no
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event->accept();
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break;
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default: // cancel
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event->ignore();
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break;
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}
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}
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}
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void Editor::toUpper()
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{
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e->setText(e->text().upper());
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}
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void Editor::toLower()
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{
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e->setText(e->text().lower());
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}
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void Editor::textChanged()
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{
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changed = TRUE;
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}
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