source: trunk/examples/demo/textdrawing/textedit.cpp@ 164

Last change on this file since 164 was 160, checked in by dmik, 19 years ago

Imported table and iconview modules and a bunch of dependent examples from the official release 3.3.1 from Trolltech.
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File size: 16.0 KB
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1/****************************************************************************
2** $Id: textedit.cpp 160 2006-12-11 20:15:57Z dmik $
3**
4** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
5**
6** This file is part of an example program for Qt. This example
7** program may be used, distributed and modified without limitation.
8**
9*****************************************************************************/
10
11#include "textedit.h"
12
13#include <qtextedit.h>
14#include <qaction.h>
15#include <qmenubar.h>
16#include <qpopupmenu.h>
17#include <qtoolbar.h>
18#include <qtabwidget.h>
19#include <qapplication.h>
20#include <qfontdatabase.h>
21#include <qcombobox.h>
22#include <qlineedit.h>
23#include <qfileinfo.h>
24#include <qfile.h>
25#include <qfiledialog.h>
26#include <qprinter.h>
27#include <qpaintdevicemetrics.h>
28#include <qsimplerichtext.h>
29#include <qcolordialog.h>
30#include <qpainter.h>
31
32TextEdit::TextEdit( QWidget *parent, const char *name )
33 : QMainWindow( parent, name, 0 )
34{
35 setupFileActions();
36 setupEditActions();
37 setupTextActions();
38
39 tabWidget = new QTabWidget( this );
40 connect( tabWidget, SIGNAL( currentChanged( QWidget * ) ),
41 this, SLOT( editorChanged( QWidget * ) ) );
42 setCentralWidget( tabWidget );
43}
44
45void TextEdit::setupFileActions()
46{
47 QToolBar *tb = new QToolBar( this );
48 QPopupMenu *menu = new QPopupMenu( this );
49 menuBar()->insertItem( tr( "&File" ), menu );
50
51 QAction *a;
52 a = new QAction( tr( "New" ), QPixmap( "textdrawing/filenew.png" ), tr( "&New..." ), CTRL + Key_N, this, "fileNew" );
53 connect( a, SIGNAL( activated() ), this, SLOT( fileNew() ) );
54 a->addTo( tb );
55 a->addTo( menu );
56 a = new QAction( tr( "Open" ), QPixmap( "textdrawing/fileopen.png" ), tr( "&Open..." ), CTRL + Key_O, this, "fileOpen" );
57 connect( a, SIGNAL( activated() ), this, SLOT( fileOpen() ) );
58 a->addTo( tb );
59 a->addTo( menu );
60 menu->insertSeparator();
61 a = new QAction( tr( "Save" ), QPixmap( "textdrawing/filesave.png" ), tr( "&Save..." ), CTRL + Key_S, this, "fileSave" );
62 connect( a, SIGNAL( activated() ), this, SLOT( fileSave() ) );
63 a->addTo( tb );
64 a->addTo( menu );
65 a = new QAction( tr( "Save As" ), QPixmap(), tr( "Save &As..." ), 0, this, "fileSaveAs" );
66 connect( a, SIGNAL( activated() ), this, SLOT( fileSaveAs() ) );
67 a->addTo( menu );
68 menu->insertSeparator();
69 a = new QAction( tr( "Print" ), QPixmap( "textdrawing/print.png" ), tr( "&Print..." ), CTRL + Key_P, this, "filePrint" );
70 connect( a, SIGNAL( activated() ), this, SLOT( filePrint() ) );
71 a->addTo( tb );
72 a->addTo( menu );
73 a = new QAction( tr( "Close" ), QPixmap(), tr( "&Close" ), 0, this, "fileClose" );
74 connect( a, SIGNAL( activated() ), this, SLOT( fileClose() ) );
75 a->addTo( menu );
76}
77
78void TextEdit::setupEditActions()
79{
80 QToolBar *tb = new QToolBar( this );
81 QPopupMenu *menu = new QPopupMenu( this );
82 menuBar()->insertItem( tr( "&Edit" ), menu );
83
84 QAction *a;
85 a = new QAction( tr( "Undo" ), QPixmap( "textdrawing/undo.png" ), tr( "&Undo" ), CTRL + Key_Z, this, "editUndo" );
86 connect( a, SIGNAL( activated() ), this, SLOT( editUndo() ) );
87 a->addTo( tb );
88 a->addTo( menu );
89 a = new QAction( tr( "Redo" ), QPixmap( "textdrawing/redo.png" ), tr( "&Redo" ), CTRL + Key_Y, this, "editRedo" );
90 connect( a, SIGNAL( activated() ), this, SLOT( editRedo() ) );
91 a->addTo( tb );
92 a->addTo( menu );
93 menu->insertSeparator();
94 a = new QAction( tr( "Cut" ), QPixmap( "textdrawing/editcut.png" ), tr( "&Cut" ), CTRL + Key_X, this, "editCut" );
95 connect( a, SIGNAL( activated() ), this, SLOT( editCut() ) );
96 a->addTo( tb );
97 a->addTo( menu );
98 a = new QAction( tr( "Copy" ), QPixmap( "textdrawing/editcopy.png" ), tr( "C&opy" ), CTRL + Key_C, this, "editCopy" );
99 connect( a, SIGNAL( activated() ), this, SLOT( editCopy() ) );
100 a->addTo( tb );
101 a->addTo( menu );
102 a = new QAction( tr( "Paste" ), QPixmap( "textdrawing/editpaste.png" ), tr( "&Paste" ), CTRL + Key_V, this, "editPaste" );
103 connect( a, SIGNAL( activated() ), this, SLOT( editPaste() ) );
104 a->addTo( tb );
105 a->addTo( menu );
106}
107
108void TextEdit::setupTextActions()
109{
110 QToolBar *tb = new QToolBar( this );
111 QPopupMenu *menu = new QPopupMenu( this );
112 menuBar()->insertItem( tr( "For&mat" ), menu );
113
114 comboStyle = new QComboBox( FALSE, tb );
115 comboStyle->insertItem( tr("Standard") );
116 comboStyle->insertItem( tr("Bullet List (Disc)") );
117 comboStyle->insertItem( tr("Bullet List (Circle)") );
118 comboStyle->insertItem( tr("Bullet List (Square)") );
119 comboStyle->insertItem( tr("Ordered List (Decimal)") );
120 comboStyle->insertItem( tr("Ordered List (Alpha lower)") );
121 comboStyle->insertItem( tr("Ordered List (Alpha upper)") );
122 connect( comboStyle, SIGNAL( activated( int ) ),
123 this, SLOT( textStyle( int ) ) );
124
125 comboFont = new QComboBox( TRUE, tb );
126 QFontDatabase db;
127 comboFont->insertStringList( db.families() );
128 connect( comboFont, SIGNAL( activated( const QString & ) ),
129 this, SLOT( textFamily( const QString & ) ) );
130 comboFont->lineEdit()->setText( QApplication::font().family() );
131
132 comboSize = new QComboBox( TRUE, tb );
133 QValueList<int> sizes = db.standardSizes();
134 QValueList<int>::Iterator it = sizes.begin();
135 for ( ; it != sizes.end(); ++it )
136 comboSize->insertItem( QString::number( *it ) );
137 connect( comboSize, SIGNAL( activated( const QString & ) ),
138 this, SLOT( textSize( const QString & ) ) );
139 comboSize->lineEdit()->setText( QString::number( QApplication::font().pointSize() ) );
140
141 actionTextBold = new QAction( tr( "Bold" ), QPixmap( "textdrawing/textbold.png" ), tr( "&Bold" ), CTRL + Key_B, this, "textBold" );
142 connect( actionTextBold, SIGNAL( activated() ), this, SLOT( textBold() ) );
143 actionTextBold->addTo( tb );
144 actionTextBold->addTo( menu );
145 actionTextBold->setToggleAction( TRUE );
146 actionTextItalic = new QAction( tr( "Italic" ), QPixmap( "textdrawing/textitalic.png" ), tr( "&Italic" ), CTRL + Key_I, this, "textItalic" );
147 connect( actionTextItalic, SIGNAL( activated() ), this, SLOT( textItalic() ) );
148 actionTextItalic->addTo( tb );
149 actionTextItalic->addTo( menu );
150 actionTextItalic->setToggleAction( TRUE );
151 actionTextUnderline = new QAction( tr( "Underline" ), QPixmap( "textdrawing/textunderline.png" ), tr( "&Underline" ), CTRL + Key_U, this, "textUnderline" );
152 connect( actionTextUnderline, SIGNAL( activated() ), this, SLOT( textUnderline() ) );
153 actionTextUnderline->addTo( tb );
154 actionTextUnderline->addTo( menu );
155 actionTextUnderline->setToggleAction( TRUE );
156 menu->insertSeparator();
157
158 QActionGroup *grp = new QActionGroup( this );
159 grp->setExclusive( TRUE );
160 connect( grp, SIGNAL( selected( QAction* ) ), this, SLOT( textAlign( QAction* ) ) );
161
162 actionAlignLeft = new QAction( tr( "Left" ), QPixmap( "textdrawing/textleft.png" ), tr( "&Left" ), CTRL + Key_L, grp, "textLeft" );
163 actionAlignLeft->addTo( tb );
164 actionAlignLeft->addTo( menu );
165 actionAlignLeft->setToggleAction( TRUE );
166 actionAlignCenter = new QAction( tr( "Center" ), QPixmap( "textdrawing/textcenter.png" ), tr( "C&enter" ), CTRL + Key_M, grp, "textCenter" );
167 actionAlignCenter->addTo( tb );
168 actionAlignCenter->addTo( menu );
169 actionAlignCenter->setToggleAction( TRUE );
170 actionAlignRight = new QAction( tr( "Right" ), QPixmap( "textdrawing/textright.png" ), tr( "&Right" ), CTRL + Key_R, grp, "textRight" );
171 actionAlignRight->addTo( tb );
172 actionAlignRight->addTo( menu );
173 actionAlignRight->setToggleAction( TRUE );
174 actionAlignJustify = new QAction( tr( "Justify" ), QPixmap( "textdrawing/textjustify.png" ), tr( "&Justify" ), CTRL + Key_J, grp, "textjustify" );
175 actionAlignJustify->addTo( tb );
176 actionAlignJustify->addTo( menu );
177 actionAlignJustify->setToggleAction( TRUE );
178
179 menu->insertSeparator();
180
181 QPixmap pix( 16, 16 );
182 pix.fill( black );
183 actionTextColor = new QAction( tr( "Color" ), pix, tr( "&Color..." ), 0, this, "textColor" );
184 connect( actionTextColor, SIGNAL( activated() ), this, SLOT( textColor() ) );
185 actionTextColor->addTo( tb );
186 actionTextColor->addTo( menu );
187}
188
189void TextEdit::load( const QString &f )
190{
191 if ( !QFile::exists( f ) )
192 return;
193 QTextEdit *edit = new QTextEdit( tabWidget );
194 doConnections( edit );
195 tabWidget->addTab( edit, QFileInfo( f ).fileName() );
196
197 QFile fl( f );
198 fl.open( IO_ReadOnly );
199 QByteArray array = fl.readAll();
200 array.resize( array.size() +1 );
201 array[ (int)array.size() - 1 ] = '\0';
202 QString text = ( f.find( "bidi.txt" ) != -1 ? QString::fromUtf8( array.data() ) : QString::fromLatin1( array.data() ) );
203 edit->setText( text );
204
205 edit->viewport()->setFocus();
206 edit->setTextFormat( Qt::RichText );
207}
208
209QTextEdit *TextEdit::currentEditor() const
210{
211 if ( tabWidget->currentPage() &&
212 tabWidget->currentPage()->inherits( "QTextEdit" ) )
213 return (QTextEdit*)tabWidget->currentPage();
214 return 0;
215}
216
217void TextEdit::doConnections( QTextEdit *e )
218{
219 connect( e, SIGNAL( currentFontChanged( const QFont & ) ),
220 this, SLOT( fontChanged( const QFont & ) ) );
221 connect( e, SIGNAL( currentColorChanged( const QColor & ) ),
222 this, SLOT( colorChanged( const QColor & ) ) );
223 connect( e, SIGNAL( currentAlignmentChanged( int ) ),
224 this, SLOT( alignmentChanged( int ) ) );
225}
226
227void TextEdit::fileNew()
228{
229 QTextEdit *edit = new QTextEdit( tabWidget );
230 doConnections( edit );
231 tabWidget->addTab( edit, tr( "noname" ) );
232 tabWidget->showPage( edit );
233 edit->viewport()->setFocus();
234}
235
236void TextEdit::fileOpen()
237{
238 QString fn = QFileDialog::getOpenFileName( QString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this );
239 if ( !fn.isEmpty() )
240 load( fn );
241}
242
243void TextEdit::fileSave()
244{
245 if ( !currentEditor() )
246 return;
247 QString fn;
248 if ( filenames.find( currentEditor() ) == filenames.end() ) {
249 fileSaveAs();
250 } else {
251 QFile file( *filenames.find( currentEditor() ) );
252 if ( !file.open( IO_WriteOnly ) )
253 return;
254 QTextStream ts( &file );
255 ts << currentEditor()->text();
256 }
257}
258
259void TextEdit::fileSaveAs()
260{
261 if ( !currentEditor() )
262 return;
263 QString fn = QFileDialog::getSaveFileName( QString::null, tr( "HTML-Files (*.htm *.html);;All Files (*)" ), this );
264 if ( !fn.isEmpty() ) {
265 filenames.replace( currentEditor(), fn );
266 fileSave();
267 tabWidget->setTabLabel( currentEditor(), QFileInfo( fn ).fileName() );
268 }
269}
270
271void TextEdit::filePrint()
272{
273 if ( !currentEditor() )
274 return;
275#ifndef QT_NO_PRINTER
276 QPrinter printer;
277 printer.setFullPage(TRUE);
278 QPaintDeviceMetrics screen( this );
279 printer.setResolution( screen.logicalDpiY() );
280 if ( printer.setup( this ) ) {
281 QPainter p( &printer );
282 QPaintDeviceMetrics metrics( p.device() );
283 int dpix = metrics.logicalDpiX();
284 int dpiy = metrics.logicalDpiY();
285 const int margin = 72; // pt
286 QRect body( margin * dpix / 72, margin * dpiy / 72,
287 metrics.width() - margin * dpix / 72 * 2,
288 metrics.height() - margin * dpiy / 72 * 2 );
289 QFont font( "times", 10 );
290 QSimpleRichText richText( currentEditor()->text(), font, currentEditor()->context(), currentEditor()->styleSheet(),
291 currentEditor()->mimeSourceFactory(), body.height() );
292 richText.setWidth( &p, body.width() );
293 QRect view( body );
294 int page = 1;
295 do {
296 richText.draw( &p, body.left(), body.top(), view, colorGroup() );
297 view.moveBy( 0, body.height() );
298 p.translate( 0 , -body.height() );
299 p.setFont( font );
300 p.drawText( view.right() - p.fontMetrics().width( QString::number( page ) ),
301 view.bottom() + p.fontMetrics().ascent() + 5, QString::number( page ) );
302 if ( view.top() >= richText.height() )
303 break;
304 printer.newPage();
305 page++;
306 } while (TRUE);
307 }
308#endif
309}
310
311void TextEdit::fileClose()
312{
313 delete currentEditor();
314 if ( currentEditor() )
315 currentEditor()->viewport()->setFocus();
316}
317
318void TextEdit::fileExit()
319{
320 qApp->quit();
321}
322
323void TextEdit::editUndo()
324{
325 if ( !currentEditor() )
326 return;
327 currentEditor()->undo();
328}
329
330void TextEdit::editRedo()
331{
332 if ( !currentEditor() )
333 return;
334 currentEditor()->redo();
335}
336
337void TextEdit::editCut()
338{
339 if ( !currentEditor() )
340 return;
341 currentEditor()->cut();
342}
343
344void TextEdit::editCopy()
345{
346 if ( !currentEditor() )
347 return;
348 currentEditor()->copy();
349}
350
351void TextEdit::editPaste()
352{
353 if ( !currentEditor() )
354 return;
355 currentEditor()->paste();
356}
357
358void TextEdit::textBold()
359{
360 if ( !currentEditor() )
361 return;
362 currentEditor()->setBold( actionTextBold->isOn() );
363}
364
365void TextEdit::textUnderline()
366{
367 if ( !currentEditor() )
368 return;
369 currentEditor()->setUnderline( actionTextUnderline->isOn() );
370}
371
372void TextEdit::textItalic()
373{
374 if ( !currentEditor() )
375 return;
376 currentEditor()->setItalic( actionTextItalic->isOn() );
377}
378
379void TextEdit::textFamily( const QString &f )
380{
381 if ( !currentEditor() )
382 return;
383 currentEditor()->setFamily( f );
384 currentEditor()->viewport()->setFocus();
385}
386
387void TextEdit::textSize( const QString &p )
388{
389 if ( !currentEditor() )
390 return;
391 currentEditor()->setPointSize( p.toInt() );
392 currentEditor()->viewport()->setFocus();
393}
394
395void TextEdit::textStyle( int i )
396{
397 if ( !currentEditor() )
398 return;
399 if ( i == 0 )
400 currentEditor()->setParagType( QStyleSheetItem::DisplayBlock, QStyleSheetItem::ListDisc );
401 else if ( i == 1 )
402 currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListDisc );
403 else if ( i == 2 )
404 currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListCircle );
405 else if ( i == 3 )
406 currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListSquare );
407 else if ( i == 4 )
408 currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListDecimal );
409 else if ( i == 5 )
410 currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListLowerAlpha );
411 else if ( i == 6 )
412 currentEditor()->setParagType( QStyleSheetItem::DisplayListItem, QStyleSheetItem::ListUpperAlpha );
413 currentEditor()->viewport()->setFocus();
414}
415
416void TextEdit::textColor()
417{
418 if ( !currentEditor() )
419 return;
420 QColor col = QColorDialog::getColor( currentEditor()->color(), this );
421 if ( !col.isValid() )
422 return;
423 currentEditor()->setColor( col );
424 QPixmap pix( 16, 16 );
425 pix.fill( col );
426 actionTextColor->setIconSet( pix );
427}
428
429void TextEdit::textAlign( QAction *a )
430{
431 if ( !currentEditor() )
432 return;
433 if ( a == actionAlignLeft )
434 currentEditor()->setAlignment( AlignLeft );
435 else if ( a == actionAlignCenter )
436 currentEditor()->setAlignment( AlignHCenter );
437 else if ( a == actionAlignRight )
438 currentEditor()->setAlignment( AlignRight );
439 else if ( a == actionAlignJustify )
440 currentEditor()->setAlignment( AlignJustify );
441}
442
443void TextEdit::fontChanged( const QFont &f )
444{
445 comboFont->lineEdit()->setText( f.family() );
446 comboSize->lineEdit()->setText( QString::number( f.pointSize() ) );
447 actionTextBold->setOn( f.bold() );
448 actionTextItalic->setOn( f.italic() );
449 actionTextUnderline->setOn( f.underline() );
450}
451
452void TextEdit::colorChanged( const QColor &c )
453{
454 QPixmap pix( 16, 16 );
455 pix.fill( c );
456 actionTextColor->setIconSet( pix );
457}
458
459void TextEdit::alignmentChanged( int a )
460{
461 if ( ( a == AlignAuto ) || ( a & AlignLeft ))
462 actionAlignLeft->setOn( TRUE );
463 else if ( ( a & AlignHCenter ) )
464 actionAlignCenter->setOn( TRUE );
465 else if ( ( a & AlignRight ) )
466 actionAlignRight->setOn( TRUE );
467 else if ( ( a & AlignJustify ) )
468 actionAlignJustify->setOn( TRUE );
469}
470
471void TextEdit::editorChanged( QWidget * )
472{
473 if ( !currentEditor() )
474 return;
475 fontChanged( currentEditor()->font() );
476 colorChanged( currentEditor()->color() );
477 alignmentChanged( currentEditor()->alignment() );
478}
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