1 files changed, 97 insertions, 0 deletions

diff --git a/library/imageedit.cpp b/library/imageedit.cpp
new file mode 100644
index 0000000..7f98ebb
--- a/dev/null
+++ b/library/imageedit.cpp
@@ -0,0 +1,97 @@
+/**********************************************************************
+** Copyright (C) 2000 Trolltech AS.  All rights reserved.
+**
+** This file is part of Qtopia Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+#include "imageedit.h"
+#include <qpainter.h>
+
+ImageEdit::ImageEdit( QWidget *parent = 0, const char *name = 0 )
+    : QScrollView( parent, name, WNorthWestGravity | WResizeNoErase ), buffer()
+{
+    buffer.resize( size() );
+    buffer.fill( colorGroup().color( QColorGroup::Base ) );
+}
+
+ImageEdit::~ImageEdit()
+{
+    
+}
+
+void ImageEdit::contentsMousePressEvent( QMouseEvent *e )
+{
+    lastPos = e->pos();
+}
+
+void ImageEdit::contentsMouseMoveEvent( QMouseEvent *e )
+{
+    QPainter pw( viewport() );
+    QPainter pb( &buffer );
+    pb.drawLine( lastPos, e->pos() );
+    pw.drawLine( contentsToViewport( lastPos ),
+                 contentsToViewport( e->pos() ) );
+    lastPos = e->pos();
+}
+
+void ImageEdit::contentsMouseReleaseEvent( QMouseEvent * )
+{
+}
+
+void ImageEdit::viewportResizeEvent( QResizeEvent *e )
+{
+    enlargeBuffer(e->size());
+}
+
+void ImageEdit::enlargeBuffer( const QSize& sz )
+{
+    QSize osz = buffer.size();
+    QSize nsz( QMAX( osz.width(), sz.width() ), QMAX( osz.height(), sz.height() ) );
+    buffer.resize( nsz.width(), nsz.height() );
+    // clear new area
+    QPainter p( &buffer );
+    if ( sz.width() > osz.width() )
+        p.fillRect( osz.width(), 0, sz.width() - osz.width(), nsz.height(), colorGroup().color( QColorGroup::Base ) );
+    if ( sz.height() > osz.height() )
+        p.fillRect( 0, osz.height(), nsz.width(), sz.height() - osz.height(), colorGroup().color( QColorGroup::Base ) );
+    p.end();
+}
+
+void ImageEdit::drawContents( QPainter *p, int cx, int cy, int cw, int ch )
+{
+    p->drawPixmap( cx, cy, buffer, cx, cy, cw, ch );
+}
+
+void ImageEdit::setPixmap( const QPixmap &pm )
+{
+    QSize osz = buffer.size();
+    if ( pm.width() < osz.width() || pm.height() < osz.height() ) {
+        buffer.fill(white);
+        enlargeBuffer( pm.size() );
+        QPainter p(&buffer);
+        p.drawPixmap(0,0,pm);
+    } else {
+        buffer = pm;
+    }
+    resizeContents( buffer.width(), buffer.height() );
+    viewport()->repaint( FALSE );
+}
+
+QPixmap ImageEdit::pixmap() const
+{
+    return buffer;
+}
+