WpsEditor: add linenumbrs WpsEditor: Add linenumbers to the WPS Code, and highlight the error line, if parsing fails. (FS#9362)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18483 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 181 insertions, 0 deletions

diff --git a/utils/wpseditor/gui/src/numberedtextview.cpp b/utils/wpseditor/gui/src/numberedtextview.cpp
new file mode 100644
index 0000000..81c4208
--- /dev/null
+++ b/utils/wpseditor/gui/src/numberedtextview.cpp
@@ -0,0 +1,181 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 2005, 2006 KJSEmbed Authors
+    See included AUTHORS file.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+    
+        
+    --------------------------------------------------------------------------------------
+    Imported into the WPS editor and simplified by Dominik Wenger
+    
+*/
+
+
+#include <QTextDocument>
+#include <QTextBlock>
+#include <QTextEdit>
+#include <QHBoxLayout>
+#include <QScrollBar>
+#include <QPainter>
+#include <QAbstractTextDocumentLayout>
+#include <QDebug>
+
+#include "numberedtextview.h"
+
+NumberBar::NumberBar( QWidget *parent )
+    : QWidget( parent ), edit(0), markedLine(-1)
+{
+    // Make room for 4 digits and the breakpoint icon
+    setFixedWidth( fontMetrics().width( QString("0000") + 10 + 32 ) );
+    markerIcon = QPixmap( "images/marker.png" );
+}
+
+NumberBar::~NumberBar()
+{
+}
+
+
+void NumberBar::markLine( int lineno )
+{
+    markedLine = lineno;
+}
+
+void NumberBar::setTextEdit( QTextEdit *edit )
+{
+    this->edit = edit;
+    connect( edit->document()->documentLayout(), SIGNAL( update(const QRectF &) ),
+	     this, SLOT( update() ) );
+    connect( edit->verticalScrollBar(), SIGNAL(valueChanged(int) ),
+	     this, SLOT( update() ) );
+}
+
+void NumberBar::paintEvent( QPaintEvent * )
+{
+    QAbstractTextDocumentLayout *layout = edit->document()->documentLayout();
+    int contentsY = edit->verticalScrollBar()->value();
+    qreal pageBottom = contentsY + edit->viewport()->height();
+    const QFontMetrics fm = fontMetrics();
+    const int ascent = fontMetrics().ascent() + 1; // height = ascent + descent + 1
+    int lineCount = 1;
+
+    QPainter p(this);
+
+    markedRect = QRect();
+   
+    for ( QTextBlock block = edit->document()->begin();
+	  block.isValid(); block = block.next(), ++lineCount ) 
+    {
+
+        const QRectF boundingRect = layout->blockBoundingRect( block );
+
+        QPointF position = boundingRect.topLeft();
+        if ( position.y() + boundingRect.height() < contentsY )
+            continue;
+        if ( position.y() > pageBottom )
+            break;
+
+        const QString txt = QString::number( lineCount );
+        p.drawText( width() - fm.width(txt), qRound( position.y() ) - contentsY + ascent, txt );
+
+        // marker
+        if ( markedLine == lineCount )
+        {
+            p.drawPixmap( 1, qRound( position.y() ) - contentsY, markerIcon );
+            markedRect = QRect( 1, qRound( position.y() ) - contentsY, markerIcon.width(), markerIcon.height() );
+        }
+    }
+}
+
+NumberedTextView::NumberedTextView( QWidget *parent )
+    : QFrame( parent )
+{
+    setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
+    setLineWidth( 2 );
+
+    // Setup the main view
+    view = new QTextEdit( this );
+    //view->setFontFamily( "Courier" );
+    view->setLineWrapMode( QTextEdit::NoWrap );
+    view->setFrameStyle( QFrame::NoFrame );
+   
+    connect( view->document(), SIGNAL(contentsChange(int,int,int)), this, SLOT(textChanged(int,int,int)) );
+
+    // Setup the line number pane
+    numbers = new NumberBar( this );
+    numbers->setTextEdit( view );
+
+    // Test
+    markLine(2);
+    
+    //setup layout
+    box = new QHBoxLayout( this );
+    box->setSpacing( 0 );
+    box->setMargin( 0 );
+    box->addWidget( numbers );
+    box->addWidget( view );
+}
+
+NumberedTextView::~NumberedTextView()
+{
+}
+
+void NumberedTextView::markLine( int lineno )
+{
+    markedLine = lineno;
+    numbers->markLine( lineno );
+    textChanged(1,1,1);
+}
+
+void NumberedTextView::scrolltoLine( int lineno )
+{
+    int max = view->verticalScrollBar()->maximum();
+    int min = view->verticalScrollBar()->minimum();
+    int lines = view->document()->blockCount();
+    view->verticalScrollBar()->setValue( (max*lineno)/lines+min );
+}
+
+void NumberedTextView::textChanged( int pos, int removed, int added )
+{
+    Q_UNUSED( pos );
+
+    if ( removed == 0 && added == 0 )
+	return;
+
+    QTextBlock block = highlight.block();
+    QTextBlockFormat fmt = block.blockFormat();
+    QColor bg = view->palette().base().color();
+    fmt.setBackground( bg );
+    highlight.setBlockFormat( fmt );
+
+    int lineCount = 1;
+    for ( QTextBlock block = view->document()->begin();
+	  block.isValid(); block = block.next(), ++lineCount ) 
+    {
+        if ( lineCount == markedLine )
+        {
+            fmt = block.blockFormat();
+            QColor bg = Qt::red;
+            fmt.setBackground( bg.light(150) );
+
+            highlight = QTextCursor( block );
+            highlight.movePosition( QTextCursor::EndOfBlock, QTextCursor::KeepAnchor );
+            highlight.setBlockFormat( fmt );
+
+            break;
+        }
+    }
+}
+