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imagepreviewwidget.cpp
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1/*
2 Copyright (C) 2010 Frederik Gladhorn <gladhorn@kde.org>
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with this library. If not, see <http://www.gnu.org/licenses/>.
16*/
17
18#include "imagepreviewwidget.h"
19
20#include <QtGui/QPaintEvent>
21#include <QtGui/QPainter>
22
23#include <kstandarddirs.h>
24
25#include <core/entryinternal.h>
26
27using namespace KNS3;
28
29ImagePreviewWidget::ImagePreviewWidget(QWidget *parent) :
30 QWidget(parent)
31{
32 //installEventFilter(this);
33
34 QString framefile = KStandardDirs::locate("data", "knewstuff/pics/thumb_frame.png");
35 m_frameImage = QPixmap(framefile);
36}
37
38void ImagePreviewWidget::setImage(const QImage &preview)
39{
40 m_image = preview;
41 m_scaledImage = QImage();
42 updateGeometry();
43 repaint();
44}
45
46void ImagePreviewWidget::mousePressEvent(QMouseEvent* event)
47{
48 QWidget::mousePressEvent(event);
49 emit clicked();
50}
51
52void ImagePreviewWidget::resizeEvent(QResizeEvent* event)
53{
54 QWidget::resizeEvent(event);
55 m_scaledImage = QImage();
56 repaint();
57}
58
59void ImagePreviewWidget::paintEvent(QPaintEvent * /*event*/)
60{
61 if (m_image.isNull()) {
62 return;
63 }
64
65 QPainter painter(this);
66 int margin = painter.fontMetrics().height() / 2;
67 //painter.drawImage(contentsRect(), m_image);
68
69 int width = contentsRect().width();
70 int height = contentsRect().height();
71
72 if (m_scaledImage.isNull()) {
73 QSize scaled = QSize(qMin(width - 2*margin, m_image.width()*2), qMin(height - 2*margin, m_image.height()*2));
74 m_scaledImage = m_image.scaled(scaled, Qt::KeepAspectRatio, Qt::SmoothTransformation);
75 }
76
77 QPoint point;
78
79 point.setX(contentsRect().left() + ((width - m_scaledImage.width()) / 2));
80 point.setY(contentsRect().top() + ((height - m_scaledImage.height()) / 2));
81
82 QPoint framePoint(point.x() - 5, point.y() - 5);
83 painter.drawPixmap(framePoint, m_frameImage.scaled(m_scaledImage.width() + 10, m_scaledImage.height() + 10));
84 painter.drawImage(point, m_scaledImage);
85}
86
87QSize ImagePreviewWidget::sizeHint() const
88{
89 if (m_image.isNull()) {
90 return QSize();
91 }
92 QSize sh = m_image.size();
93 sh.scale(maximumSize(), Qt::KeepAspectRatio);
94 return sh;
95}
KNS3::ImagePreviewWidget::ImagePreviewWidget
ImagePreviewWidget(QWidget *parent=0)
Definition: imagepreviewwidget.cpp:29
KNS3::ImagePreviewWidget::setImage
void setImage(const QImage &preview)
Definition: imagepreviewwidget.cpp:38
KNS3::ImagePreviewWidget::clicked
void clicked()
KNS3::ImagePreviewWidget::mousePressEvent
virtual void mousePressEvent(QMouseEvent *event)
Definition: imagepreviewwidget.cpp:46
KNS3::ImagePreviewWidget::resizeEvent
virtual void resizeEvent(QResizeEvent *event)
Definition: imagepreviewwidget.cpp:52
KNS3::ImagePreviewWidget::paintEvent
virtual void paintEvent(QPaintEvent *event)
Definition: imagepreviewwidget.cpp:59
KNS3::ImagePreviewWidget::sizeHint
virtual QSize sizeHint() const
Definition: imagepreviewwidget.cpp:87
KStandardDirs::locate
static QString locate(const char *type, const QString &filename, const KComponentData &cData=KGlobal::mainComponent())
QWidget
entryinternal.h
imagepreviewwidget.h
kstandarddirs.h
KNS3
Definition: atticaprovider.cpp:36
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