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1/**********************************************************************
2** Copyright (C) 2000 Trolltech AS. All rights reserved.
3**
4** This file is part of Qtopia Environment.
5**
6** This file may be distributed and/or modified under the terms of the
7** GNU General Public License version 2 as published by the Free Software
8** Foundation and appearing in the file LICENSE.GPL included in the
9** packaging of this file.
10**
11** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
12** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
13**
14** See http://www.trolltech.com/gpl/ for GPL licensing information.
15**
16** Contact info@trolltech.com if any conditions of this licensing are
17** not clear to you.
18**
19**********************************************************************/
20#include "imageedit.h"
21#include <qpainter.h>
22
23ImageEdit::ImageEdit( QWidget *parent = 0, const char *name = 0 )
24 : QScrollView( parent, name, WNorthWestGravity | WResizeNoErase ), buffer()
25{
26 buffer.resize( size() );
27 buffer.fill( colorGroup().color( QColorGroup::Base ) );
28}
29
30ImageEdit::~ImageEdit()
31{
32
33}
34
35void ImageEdit::contentsMousePressEvent( QMouseEvent *e )
36{
37 lastPos = e->pos();
38}
39
40void ImageEdit::contentsMouseMoveEvent( QMouseEvent *e )
41{
42 QPainter pw( viewport() );
43 QPainter pb( &buffer );
44 pb.drawLine( lastPos, e->pos() );
45 pw.drawLine( contentsToViewport( lastPos ),
46 contentsToViewport( e->pos() ) );
47 lastPos = e->pos();
48}
49
50void ImageEdit::contentsMouseReleaseEvent( QMouseEvent * )
51{
52}
53
54void ImageEdit::viewportResizeEvent( QResizeEvent *e )
55{
56 enlargeBuffer(e->size());
57}
58
59void ImageEdit::enlargeBuffer( const QSize& sz )
60{
61 QSize osz = buffer.size();
62 QSize nsz( QMAX( osz.width(), sz.width() ), QMAX( osz.height(), sz.height() ) );
63 buffer.resize( nsz.width(), nsz.height() );
64 // clear new area
65 QPainter p( &buffer );
66 if ( sz.width() > osz.width() )
67 p.fillRect( osz.width(), 0, sz.width() - osz.width(), nsz.height(), colorGroup().color( QColorGroup::Base ) );
68 if ( sz.height() > osz.height() )
69 p.fillRect( 0, osz.height(), nsz.width(), sz.height() - osz.height(), colorGroup().color( QColorGroup::Base ) );
70 p.end();
71}
72
73void ImageEdit::drawContents( QPainter *p, int cx, int cy, int cw, int ch )
74{
75 p->drawPixmap( cx, cy, buffer, cx, cy, cw, ch );
76}
77
78void ImageEdit::setPixmap( const QPixmap &pm )
79{
80 QSize osz = buffer.size();
81 if ( pm.width() < osz.width() || pm.height() < osz.height() ) {
82 buffer.fill(white);
83 enlargeBuffer( pm.size() );
84 QPainter p(&buffer);
85 p.drawPixmap(0,0,pm);
86 } else {
87 buffer = pm;
88 }
89 resizeContents( buffer.width(), buffer.height() );
90 viewport()->repaint( FALSE );
91}
92
93QPixmap ImageEdit::pixmap() const
94{
95 return buffer;
96}
97