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Diffstat (limited to 'examples/demo/textdrawing/textedit.cpp')
| -rw-r--r-- | examples/demo/textdrawing/textedit.cpp | 477 |
1 files changed, 477 insertions, 0 deletions
diff --git a/examples/demo/textdrawing/textedit.cpp b/examples/demo/textdrawing/textedit.cpp new file mode 100644 index 0000000..9aebf54 --- /dev/null +++ b/examples/demo/textdrawing/textedit.cpp @@ -0,0 +1,477 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "textedit.h" + +#include <qtextedit.h> +#include <qaction.h> +#include <qmenubar.h> +#include <qpopupmenu.h> +#include <qtoolbar.h> +#include <qtabwidget.h> +#include <qapplication.h> +#include <qfontdatabase.h> +#include <qcombobox.h> +#include <qlineedit.h> +#include <qfileinfo.h> +#include <qfile.h> +#include <qfiledialog.h> +#include <qprinter.h> +#include <qpaintdevicemetrics.h> +#include <qsimplerichtext.h> +#include <qcolordialog.h> +#include <qpainter.h> + +TextEdit::TextEdit( QWidget *parent, const char *name ) + : QMainWindow( parent, name, 0 ) +{ + setupFileActions(); + setupEditActions(); + setupTextActions(); + + tabWidget = new QTabWidget( this ); + connect( tabWidget, SIGNAL( currentChanged( QWidget * ) ), + this, SLOT( editorChanged( QWidget * ) ) ); + setCentralWidget( tabWidget ); +} + +void TextEdit::setupFileActions() +{ + QToolBar *tb = new QToolBar( this ); + QPopupMenu *menu = new QPopupMenu( this ); + menuBar()->insertItem( tr( "&File" ), menu ); + + QAction *a; + a = new QAction( tr( "New" ), QPixmap( "textdrawing/filenew.png" ), tr( "&New..." ), CTRL + Key_N, this, "fileNew" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileNew() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new QAction( tr( "Open" ), QPixmap( "textdrawing/fileopen.png" ), tr( "&Open..." ), CTRL + Key_O, this, "fileOpen" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileOpen() ) ); + a->addTo( tb ); + a->addTo( menu ); + menu->insertSeparator(); + a = new QAction( tr( "Save" ), QPixmap( "textdrawing/filesave.png" ), tr( "&Save..." ), CTRL + Key_S, this, "fileSave" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileSave() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new QAction( tr( "Save As" ), QPixmap(), tr( "Save &As..." ), 0, this, "fileSaveAs" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileSaveAs() ) ); + a->addTo( menu ); + menu->insertSeparator(); + a = new QAction( tr( "Print" ), QPixmap( "textdrawing/print.png" ), tr( "&Print..." ), CTRL + Key_P, this, "filePrint" ); + connect( a, SIGNAL( activated() ), this, SLOT( filePrint() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new QAction( tr( "Close" ), QPixmap(), tr( "&Close" ), 0, this, "fileClose" ); + connect( a, SIGNAL( activated() ), this, SLOT( fileClose() ) ); + a->addTo( menu ); +} + +void TextEdit::setupEditActions() +{ + QToolBar *tb = new QToolBar( this ); + QPopupMenu *menu = new QPopupMenu( this ); + menuBar()->insertItem( tr( "&Edit" ), menu ); + + QAction *a; + a = new QAction( tr( "Undo" ), QPixmap( "textdrawing/undo.png" ), tr( "&Undo" ), CTRL + Key_Z, this, "editUndo" ); + connect( a, SIGNAL( activated() ), this, SLOT( editUndo() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new QAction( tr( "Redo" ), QPixmap( "textdrawing/redo.png" ), tr( "&Redo" ), CTRL + Key_Y, this, "editRedo" ); + connect( a, SIGNAL( activated() ), this, SLOT( editRedo() ) ); + a->addTo( tb ); + a->addTo( menu ); + menu->insertSeparator(); + a = new QAction( tr( "Cut" ), QPixmap( "textdrawing/editcut.png" ), tr( "&Cut" ), CTRL + Key_X, this, "editCut" ); + connect( a, SIGNAL( activated() ), this, SLOT( editCut() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new QAction( tr( "Copy" ), QPixmap( "textdrawing/editcopy.png" ), tr( "C&opy" ), CTRL + Key_C, this, "editCopy" ); + connect( a, SIGNAL( activated() ), this, SLOT( editCopy() ) ); + a->addTo( tb ); + a->addTo( menu ); + a = new QAction( tr( "Paste" ), QPixmap( "textdrawing/editpaste.png" ), tr( "&Paste" ), CTRL + Key_V, this, "editPaste" ); + connect( a, SIGNAL( activated() ), this, SLOT( editPaste() ) ); + a->addTo( tb ); + a->addTo( menu ); +} + +void TextEdit::setupTextActions() +{ + QToolBar *tb = new QToolBar( this ); + QPopupMenu *menu = new QPopupMenu( this ); + menuBar()->insertItem( tr( "For&mat" ), menu ); + + comboStyle = new QComboBox( FALSE, tb ); + comboStyle->insertItem( tr("Standard") ); + comboStyle->insertItem( tr("Bullet List (Disc)") ); + comboStyle->insertItem( tr("Bullet List (Circle)") ); + comboStyle->insertItem( tr("Bullet List (Square)") ); + comboStyle->insertItem( tr("Ordered List (Decimal)") ); + comboStyle->insertItem( tr("Ordered List (Alpha lower)") ); + comboStyle->insertItem( tr("Ordered List (Alpha upper)") ); + connect( comboStyle, SIGNAL( activated( int ) ), + this, SLOT( textStyle( int ) ) ); + + comboFont = new QComboBox( TRUE, tb ); + QFontDatabase db; + comboFont->insertStringList( db.families() ); + connect( comboFont, SIGNAL( activated( const QString & ) ), + this, SLOT( textFamily( const QString & ) ) ); + comboFont->lineEdit()->setText( QApplication::font().family() ); + + comboSize = new QComboBox( TRUE, tb ); + QValueList<int> sizes = db.standardSizes(); + QValueList<int>::Iterator it = sizes.begin(); + for ( ; it != sizes.end(); ++it ) + comboSize->insertItem( QString::number( *it ) ); + connect( comboSize, SIGNAL( activated( const QString & ) ), + this, SLOT( textSize( const QString & ) ) ); + comboSize->lineEdit()->setText( QString::number( QApplication::font().pointSize() ) ); + + actionTextBold = new QAction( tr( "Bold" ), QPixmap( "textdrawing/textbold.png" ), 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 QAction( tr( "Italic" ), QPixmap( "textdrawing/textitalic.png" ), 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 QAction( tr( "Underline" ), QPixmap( "textdrawing/textunderline.png" ), 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(); + + QActionGroup *grp = new QActionGroup( this ); + grp->setExclusive( TRUE ); + connect( grp, SIGNAL( selected( QAction* ) ), this, SLOT( textAlign( QAction* ) ) ); + + actionAlignLeft = new QAction( tr( "Left" ), QPixmap( "textdrawing/textleft.png" ), tr( "&Left" ), CTRL + Key_L, grp, "textLeft" ); + actionAlignLeft->addTo( tb ); + actionAlignLeft->addTo( menu ); + actionAlignLeft->setToggleAction( TRUE ); + actionAlignCenter = new QAction( tr( "Center" ), QPixmap( "textdrawing/textcenter.png" ), tr( "C&enter" ), CTRL + Key_M, grp, "textCenter" ); + actionAlignCenter->addTo( tb ); + actionAlignCenter->addTo( menu ); + actionAlignCenter->setToggleAction( TRUE ); + actionAlignRight = new QAction( tr( "Right" ), QPixmap( "textdrawing/textright.png" ), tr( "&Right" ), CTRL + Key_R, grp, "textRight" ); + actionAlignRight->addTo( tb ); + actionAlignRight->addTo( menu ); + actionAlignRight->setToggleAction( TRUE ); + actionAlignJustify = new QAction( tr( "Justify" ), QPixmap( "textdrawing/textjustify.png" ), tr( "&Justify" ), CTRL + Key_J, grp, "textjustify" ); + actionAlignJustify->addTo( tb ); + actionAlignJustify->addTo( menu ); + actionAlignJustify->setToggleAction( TRUE ); + + menu->insertSeparator(); + + QPixmap pix( 16, 16 ); + pix.fill( black ); + actionTextColor = new QAction( tr( "Color" ), pix, tr( "&Color..." ), 0, this, "textColor" ); + connect( actionTextColor, SIGNAL( activated() ), this, SLOT( textColor() ) ); + actionTextColor->addTo( tb ); + actionTextColor->addTo( menu ); +} + +void TextEdit::load( const QString &f ) +{ + if ( !QFile::exists( f ) ) + return; + QTextEdit *edit = new QTextEdit( tabWidget ); + doConnections( edit ); + tabWidget->addTab( edit, QFileInfo( f ).fileName() ); + + QFile fl( f ); + fl.open( IO_ReadOnly ); + QByteArray array = fl.readAll(); + array.resize( array.size() +1 ); + array[ (int)array.size() - 1 ] = '\0'; + QString text = ( f.find( "bidi.txt" ) != -1 ? QString::fromUtf8( array.data() ) : QString::fromLatin1( array.data() ) ); + edit->setText( text ); + + edit->viewport()->setFocus(); + edit->setTextFormat( Qt::RichText ); +} + +QTextEdit *TextEdit::currentEditor() const +{ + if ( tabWidget->currentPage() && + tabWidget->currentPage()->inherits( "QTextEdit" ) ) + return (QTextEdit*)tabWidget->currentPage(); + return 0; +} + +void TextEdit::doConnections( QTextEdit *e ) +{ + connect( e, SIGNAL( currentFontChanged( const QFont & ) ), + this, SLOT( fontChanged( const QFont & ) ) ); + connect( e, SIGNAL( currentColorChanged( const QColor & ) ), + this, SLOT( colorChanged( const QColor & ) ) ); + connect( e, SIGNAL( currentAlignmentChanged( int ) ), + this, SLOT( alignmentChanged( int ) ) ); +} + +void TextEdit::fileNew() +{ + QTextEdit *edit = new QTextEdit( tabWidget ); + doConnections( edit ); + tabWidget->addTab( edit, tr( "noname" ) ); + tabWidget->showPage( edit ); + edit->viewport()->setFocus(); +} + +void TextEdit::fileOpen() +{ + QString fn = QFileDialog::getOpenFileName( QString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this ); + if ( !fn.isEmpty() ) + load( fn ); +} + +void TextEdit::fileSave() +{ + if ( !currentEditor() ) + return; + QString fn; + if ( filenames.find( currentEditor() ) == filenames.end() ) { + fileSaveAs(); + } else { + QFile file( *filenames.find( currentEditor() ) ); + if ( !file.open( IO_WriteOnly ) ) + return; + QTextStream ts( &file ); + ts << currentEditor()->text(); + } +} + +void TextEdit::fileSaveAs() +{ + if ( !currentEditor() ) + return; + QString fn = QFileDialog::getSaveFileName( QString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this ); + if ( !fn.isEmpty() ) { + filenames.replace( currentEditor(), fn ); + fileSave(); + tabWidget->setTabLabel( currentEditor(), QFileInfo( fn ).fileName() ); + } +} + +void TextEdit::filePrint() +{ + if ( !currentEditor() ) + return; +#ifndef QT_NO_PRINTER + QPrinter printer; + printer.setFullPage(TRUE); + QPaintDeviceMetrics screen( this ); + printer.setResolution( screen.logicalDpiY() ); + if ( printer.setup( this ) ) { + QPainter p( &printer ); + QPaintDeviceMetrics metrics( p.device() ); + int dpix = metrics.logicalDpiX(); + int dpiy = metrics.logicalDpiY(); + const int margin = 72; // pt + QRect body( margin * dpix / 72, margin * dpiy / 72, + metrics.width() - margin * dpix / 72 * 2, + metrics.height() - margin * dpiy / 72 * 2 ); + QFont font( "times", 10 ); + QSimpleRichText richText( currentEditor()->text(), font, currentEditor()->context(), currentEditor()->styleSheet(), + currentEditor()->mimeSourceFactory(), body.height() ); + richText.setWidth( &p, body.width() ); + QRect view( body ); + int page = 1; + do { + richText.draw( &p, body.left(), body.top(), view, colorGroup() ); + view.moveBy( 0, body.height() ); + p.translate( 0 , -body.height() ); + p.setFont( font ); + p.drawText( view.right() - p.fontMetrics().width( QString::number( page ) ), + view.bottom() + p.fontMetrics().ascent() + 5, QString::number( page ) ); + if ( view.top() >= richText.height() ) + break; + printer.newPage(); + page++; + } while (TRUE); + } +#endif +} + +void TextEdit::fileClose() +{ + delete currentEditor(); + if ( currentEditor() ) + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::fileExit() +{ + qApp->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 QString &f ) +{ + if ( !currentEditor() ) + return; + currentEditor()->setFamily( f ); + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::textSize( const QString &p ) +{ + if ( !currentEditor() ) + return; + currentEditor()->setPointSize( p.toInt() ); + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::textStyle( int i ) +{ + if ( !currentEditor() ) + return; + if ( i == 0 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayBlock, QStyleSheetItem::ListDisc ); + else if ( i == 1 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListDisc ); + else if ( i == 2 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListCircle ); + else if ( i == 3 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListSquare ); + else if ( i == 4 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListDecimal ); + else if ( i == 5 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListLowerAlpha ); + else if ( i == 6 ) + currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListUpperAlpha ); + currentEditor()->viewport()->setFocus(); +} + +void TextEdit::textColor() +{ + if ( !currentEditor() ) + return; + QColor col = QColorDialog::getColor( currentEditor()->color(), this ); + if ( !col.isValid() ) + return; + currentEditor()->setColor( col ); + QPixmap pix( 16, 16 ); + pix.fill( col ); + actionTextColor->setIconSet( pix ); +} + +void TextEdit::textAlign( QAction *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 QFont &f ) +{ + comboFont->lineEdit()->setText( f.family() ); + comboSize->lineEdit()->setText( QString::number( f.pointSize() ) ); + actionTextBold->setOn( f.bold() ); + actionTextItalic->setOn( f.italic() ); + actionTextUnderline->setOn( f.underline() ); +} + +void TextEdit::colorChanged( const QColor &c ) +{ + QPixmap 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( QWidget * ) +{ + if ( !currentEditor() ) + return; + fontChanged( currentEditor()->font() ); + colorChanged( currentEditor()->color() ); + alignmentChanged( currentEditor()->alignment() ); +} |