apps/dolphin/src/panels/information/commenteditwidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Sebastian Trueg <trueg@kde.org>                 *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "commenteditwidget.h"
  21
  22 #include <QtGui/QToolButton>
  23 #include <QtGui/QVBoxLayout>
  24 #include <QtCore/QEventLoop>
  25 #include <QtCore/QPointer>
  26 #include <QtGui/QApplication>
  27 #include <QtGui/QDesktopWidget>
  28 #include <QtGui/QMouseEvent>
  29 #include <QtGui/QFont>
  30
  31 #include <KIcon>
  32 #include <KDialog>
  33 #include <KLocale>
  34 #include <KDebug>
  35 #include <KTextEdit>
  36
  37
  38 class CommentEditWidget::Private
  39 {
  40 public:
  41     Private( CommentEditWidget* parent )
  42         : eventLoop( 0 ),
  43           q( parent ) {
  44     }
  45
  46     QEventLoop* eventLoop;
  47     bool success;
  48     KTextEdit* textEdit;
  49     QToolButton* buttonSave;
  50     QToolButton* buttonCancel;
  51
  52     QString comment;
  53
  54     QRect geometryForPopupPos( const QPoint& p ) {
  55         QSize size = q->sizeHint();
  56
  57         // we want a little margin
  58         const int margin = KDialog::marginHint();
  59         size.setHeight( size.height() + margin*2 );
  60         size.setWidth( size.width() + margin*2 );
  61
  62         QRect screen = QApplication::desktop()->screenGeometry( QApplication::desktop()->screenNumber( p ) );
  63
  64         // calculate popup position
  65         QPoint pos( p.x() - size.width()/2, p.y() - size.height()/2 );
  66
  67         // ensure we do not leave the desktop
  68         if ( pos.x() + size.width() > screen.right() ) {
  69             pos.setX( screen.right() - size.width() );
  70         }
  71         else if ( pos.x() < screen.left() ) {
  72             pos.setX( screen.left() );
  73         }
  74
  75         if ( pos.y() + size.height() > screen.bottom() ) {
  76             pos.setY( screen.bottom() - size.height() );
  77         }
  78         else if ( pos.y() < screen.top() ) {
  79             pos.setY( screen.top() );
  80         }
  81
  82         return QRect( pos, size );
  83     }
  84
  85     void _k_saveClicked();
  86     void _k_cancelClicked();
  87
  88 private:
  89     CommentEditWidget* q;
  90 };
  91
  92
  93 void CommentEditWidget::Private::_k_saveClicked()
  94 {
  95     comment = textEdit->toPlainText();
  96     success = true;
  97     q->hide();
  98 }
  99
 100
 101 void CommentEditWidget::Private::_k_cancelClicked()
 102 {
 103     success = false;
 104     q->hide();
 105 }
 106
 107
 108 CommentEditWidget::CommentEditWidget( QWidget* parent )
 109     : QFrame( parent ),
 110       d( new Private( this ) )
 111 {
 112     setFrameStyle( QFrame::Box|QFrame::Plain );
 113     setWindowFlags( Qt::Popup );
 114
 115     d->textEdit = new KTextEdit( this );
 116     d->textEdit->installEventFilter( this );
 117     QVBoxLayout* layout = new QVBoxLayout( this );
 118     layout->setMargin( 0 );
 119     layout->addWidget( d->textEdit );
 120
 121     d->buttonSave = new QToolButton( d->textEdit );
 122     d->buttonCancel = new QToolButton( d->textEdit );
 123     d->buttonSave->setToolButtonStyle( Qt::ToolButtonTextBesideIcon );
 124     d->buttonCancel->setToolButtonStyle( Qt::ToolButtonTextBesideIcon );
 125     d->buttonSave->setAutoRaise( true );
 126     d->buttonCancel->setAutoRaise( true );
 127     d->buttonSave->setIcon( KIcon( "document-save" ) );
 128     d->buttonCancel->setIcon( KIcon( "edit-delete" ) );
 129     d->buttonSave->setText( i18nc( "@action:button", "Save" ) );
 130     d->buttonCancel->setText( i18nc( "@action:button", "Cancel" ) );
 131
 132     QFont fnt( font() );
 133     fnt.setPointSize( fnt.pointSize()-2 );
 134     d->buttonSave->setFont( fnt );
 135     d->buttonCancel->setFont( fnt );
 136
 137     connect( d->buttonSave, SIGNAL(clicked()),
 138              this, SLOT( _k_saveClicked() ) );
 139     connect( d->buttonCancel, SIGNAL(clicked()),
 140              this, SLOT( _k_cancelClicked() ) );
 141 }
 142
 143
 144 CommentEditWidget::~CommentEditWidget()
 145 {
 146     delete d;
 147 }
 148
 149
 150 void CommentEditWidget::setComment( const QString& s )
 151 {
 152     d->comment = s;
 153 }
 154
 155
 156 QString CommentEditWidget::comment()
 157 {
 158     return d->comment;
 159 }
 160
 161
 162 bool CommentEditWidget::exec( const QPoint& pos )
 163 {
 164     d->success = false;
 165     d->textEdit->setPlainText( d->comment );
 166     d->textEdit->setFocus();
 167     d->textEdit->moveCursor( QTextCursor::End );
 168     QEventLoop eventLoop;
 169     d->eventLoop = &eventLoop;
 170     setGeometry( d->geometryForPopupPos( pos ) );
 171     show();
 172
 173     QPointer<QObject> guard = this;
 174     (void) eventLoop.exec();
 175     if ( !guard.isNull() )
 176         d->eventLoop = 0;
 177     return d->success;
 178 }
 179
 180
 181 void CommentEditWidget::mousePressEvent( QMouseEvent* e )
 182 {
 183     // clicking outside of the widget means cancel
 184     if ( !rect().contains( e->pos() ) ) {
 185         d->success = false;
 186         hide();
 187     }
 188     else {
 189         QWidget::mousePressEvent( e );
 190     }
 191 }
 192
 193
 194 void CommentEditWidget::hideEvent( QHideEvent* e )
 195 {
 196     Q_UNUSED( e );
 197     if ( d->eventLoop ) {
 198         d->eventLoop->exit();
 199     }
 200 }
 201
 202
 203 void CommentEditWidget::updateButtons()
 204 {
 205     QSize sbs = d->buttonSave->sizeHint();
 206     QSize cbs = d->buttonCancel->sizeHint();
 207
 208     // FIXME: button order
 209     d->buttonCancel->setGeometry( QRect( QPoint( d->textEdit->width() - cbs.width() - frameWidth(),
 210                                                  d->textEdit->height() - cbs.height() - frameWidth() ),
 211                                          cbs ) );
 212     d->buttonSave->setGeometry( QRect( QPoint( d->textEdit->width() - cbs.width() - sbs.width() - frameWidth(),
 213                                                d->textEdit->height() - sbs.height() - frameWidth() ),
 214                                        sbs ) );
 215 }
 216
 217
 218 void CommentEditWidget::resizeEvent( QResizeEvent* e )
 219 {
 220     QWidget::resizeEvent( e );
 221     updateButtons();
 222 }
 223
 224
 225 bool CommentEditWidget::eventFilter( QObject* watched, QEvent* event )
 226 {
 227     if ( watched == d->textEdit && event->type() == QEvent::KeyPress ) {
 228         QKeyEvent* ke = static_cast<QKeyEvent*>( event );
 229         kDebug() << "keypress:" << ke->key() << ke->modifiers();
 230         if ( ( ke->key() == Qt::Key_Enter ||
 231                ke->key() == Qt::Key_Return ) &&
 232              ke->modifiers() & Qt::ControlModifier ) {
 233             d->_k_saveClicked();
 234             return true;
 235         }
 236     }
 237
 238     return QFrame::eventFilter( watched, event );
 239 }
 240
 241 #include "commenteditwidget.moc"