| -rw-r--r-- | library/imageedit.cpp | 97 |
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; +} + |