Differential D10832 Diff 28884 src/panels/information/pixmapviewer.cpp

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src/panels/information/pixmapviewer.cpp

Show All 30 Lines27PixmapViewer::PixmapViewer(QWidget* parent, Transition transition) :
31 m_sizeHint() 31​ m_sizeHint()
32{ 32​{
33 setMinimumWidth(KIconLoader::SizeEnormous); 33​ setMinimumWidth(KIconLoader::SizeEnormous);
34 setMinimumHeight(KIconLoader::SizeEnormous); 34​ setMinimumHeight(KIconLoader::SizeEnormous);
35 35​
36 m_animation.setDuration(150); 36​ m_animation.setDuration(150);
37 m_animation.setCurveShape(QTimeLine::LinearCurve); 37​ m_animation.setCurveShape(QTimeLine::LinearCurve);
38 38​
39 if (m_transition != NoTransition) { 39​ if (m_transition != Transition::NoTransition) {
40 connect(&m_animation, &QTimeLine::valueChanged, this, static_cast<void(PixmapViewer::*)()>(&PixmapViewer::update)); 40​ connect(&m_animation, &QTimeLine::valueChanged, this, static_cast<void(PixmapViewer::*)()>(&PixmapViewer::update));
41 connect(&m_animation, &QTimeLine::finished, this, &PixmapViewer::checkPendingPixmaps); 41​ connect(&m_animation, &QTimeLine::finished, this, &PixmapViewer::checkPendingPixmaps);
42 } 42​ }
43} 43​}
44 44​
45PixmapViewer::~PixmapViewer() 45​PixmapViewer::~PixmapViewer()
46{ 46​{
47} 47​}
48 48​
49void PixmapViewer::setPixmap(const QPixmap& pixmap) 49​void PixmapViewer::setPixmap(const QPixmap& pixmap)
50{ 50​{
51 if (pixmap.isNull()) { 51​ if (pixmap.isNull()) {
52 return; 52​ return;
53 } 53​ }
54 54​
55 if ((m_transition != NoTransition) && (m_animation.state() == QTimeLine::Running)) { 55​ if ((m_transition != Transition::NoTransition) && (m_animation.state() == QTimeLine::Running)) {
56 m_pendingPixmaps.enqueue(pixmap); 56​ m_pendingPixmaps.enqueue(pixmap);
57 if (m_pendingPixmaps.count() > 5) { 57​ if (m_pendingPixmaps.count() > 5) {
58 // don't queue more than 5 pixmaps 58​ // don't queue more than 5 pixmaps
59 m_pendingPixmaps.takeFirst(); 59​ m_pendingPixmaps.takeFirst();
60 } 60​ }
61 return; 61​ return;
62 } 62​ }
63 63​
64 m_oldPixmap = m_pixmap.isNull() ? pixmap : m_pixmap; 64​ m_oldPixmap = m_pixmap.isNull() ? pixmap : m_pixmap;
65 m_pixmap = pixmap; 65​ m_pixmap = pixmap;
66 update(); 66​ update();
67 67​
68 const bool animate = (m_transition != NoTransition) && 68​ const bool animate = (m_transition != Transition::NoTransition) &&
69 (m_pixmap.size() != m_oldPixmap.size()); 69​ (m_pixmap.size() != m_oldPixmap.size());
70 if (animate) { 70​ if (animate) {
71 m_animation.start(); 71​ m_animation.start();
72 } 72​ }
73} 73​}
74 74​
75void PixmapViewer::setSizeHint(const QSize& size) 75​void PixmapViewer::setSizeHint(const QSize& size)
76{ 76​{
77 m_sizeHint = size; 77​ m_sizeHint = size;
78 updateGeometry(); 78​ updateGeometry();
79} 79​}
80 80​
81QSize PixmapViewer::sizeHint() const 81​QSize PixmapViewer::sizeHint() const
82{ 82​{
83 return m_sizeHint; 83​ return m_sizeHint;
84} 84​}
85 85​
86void PixmapViewer::paintEvent(QPaintEvent* event) 86​void PixmapViewer::paintEvent(QPaintEvent* event)
87{ 87​{
88 QWidget::paintEvent(event); 88​ QWidget::paintEvent(event);
89 89​
90 QPainter painter(this); 90​ QPainter painter(this);
91 91​
92 if (m_transition != NoTransition) { 92​ if (m_transition != Transition::NoTransition) {
93 const float value = m_animation.currentValue(); 93​ const float value = m_animation.currentValue();
94 const int scaledWidth = static_cast<int>((m_oldPixmap.width() * (1.0 - value)) + (m_pixmap.width() * value)); 94​ const int scaledWidth = static_cast<int>((m_oldPixmap.width() * (1.0 - value)) + (m_pixmap.width() * value));
95 const int scaledHeight = static_cast<int>((m_oldPixmap.height() * (1.0 - value)) + (m_pixmap.height() * value)); 95​ const int scaledHeight = static_cast<int>((m_oldPixmap.height() * (1.0 - value)) + (m_pixmap.height() * value));
96 96​
97 const bool useOldPixmap = (m_transition == SizeTransition) && 97​ const bool useOldPixmap = (m_transition == Transition::Size) &&
98 (m_oldPixmap.width() > m_pixmap.width()); 98​ (m_oldPixmap.width() > m_pixmap.width());
99 const QPixmap& largePixmap = useOldPixmap ? m_oldPixmap : m_pixmap; 99​ const QPixmap& largePixmap = useOldPixmap ? m_oldPixmap : m_pixmap;
100 if (!largePixmap.isNull()) { 100​ if (!largePixmap.isNull()) {
101 const QPixmap scaledPixmap = largePixmap.scaled(scaledWidth, 101​ const QPixmap scaledPixmap = largePixmap.scaled(scaledWidth,
102 scaledHeight, 102​ scaledHeight,
103 Qt::IgnoreAspectRatio, 103​ Qt::IgnoreAspectRatio,
104 Qt::FastTransformation); 104​ Qt::FastTransformation);
105 105​
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