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authorkergoth <kergoth>2002-01-25 22:14:26 (UTC)
committer kergoth <kergoth>2002-01-25 22:14:26 (UTC)
commit15318cad33835e4e2dc620d033e43cd930676cdd (patch) (side-by-side diff)
treec2fa0399a2c47fda8e2cd0092c73a809d17f68eb /library/imageedit.cpp
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+/**********************************************************************
+** 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;
+}
+