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40
41 #include "fademessage.h"
42
43 #include <QtGui>
44
FadeMessage(QWidget * parent)45 FadeMessage::FadeMessage(QWidget *parent): QGraphicsView(parent)
46 {
47 setScene(&m_scene);
48 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
49 setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
50
51 setupScene();
52
53 m_animation = new QPropertyAnimation(m_effect, "strength", this);
54 m_animation->setDuration(500);
55 m_animation->setEasingCurve(QEasingCurve::InOutSine);
56 m_animation->setStartValue(0);
57 m_animation->setEndValue(1);
58
59 setRenderHint(QPainter::Antialiasing, true);
60 setFrameStyle(QFrame::NoFrame);
61 }
62
togglePopup()63 void FadeMessage::togglePopup()
64 {
65 if (m_message->isVisible()) {
66 m_message->setVisible(false);
67 m_animation->setDirection(QAbstractAnimation::Backward);
68 } else {
69 m_message->setVisible(true);
70 m_animation->setDirection(QAbstractAnimation::Forward);
71 }
72 m_animation->start();
73 }
74
setupScene()75 void FadeMessage::setupScene()
76 {
77 QGraphicsRectItem *parent = m_scene.addRect(0, 0, 800, 600);
78 parent->setPen(Qt::NoPen);
79 parent->setZValue(0);
80
81 QGraphicsPixmapItem *bg = m_scene.addPixmap(QPixmap(":/background.jpg"));
82 bg->setParentItem(parent);
83 bg->setZValue(-1);
84
85 for (int i = 1; i < 5; ++i)
86 for (int j = 2; j < 5; ++j) {
87 QGraphicsRectItem *item = m_scene.addRect(i * 50, (j - 1) * 50, 38, 38);
88 item->setParentItem(parent);
89 item->setZValue(1);
90 int hue = 12 * (i * 5 + j);
91 item->setBrush(QColor::fromHsv(hue, 128, 128));
92 }
93
94 QFont font;
95 font.setPointSize(font.pointSize() * 2);
96 font.setBold(true);
97 QFontMetrics fontMetrics(font);
98 int fh = fontMetrics.height();
99
100 QString sceneText = "Qt Everywhere!";
101 int sceneTextWidth = fontMetrics.width(sceneText);
102
103 QGraphicsRectItem *block = m_scene.addRect(50, 300, sceneTextWidth, fh + 3);
104 block->setPen(Qt::NoPen);
105 block->setBrush(QColor(102, 153, 51));
106
107 QGraphicsTextItem *text = m_scene.addText(sceneText, font);
108 text->setDefaultTextColor(Qt::white);
109 text->setPos(50, 300);
110 block->setZValue(2);
111 block->hide();
112
113 text->setParentItem(block);
114 m_message = block;
115
116 m_effect = new QGraphicsColorizeEffect;
117 m_effect->setColor(QColor(122, 193, 66));
118 m_effect->setStrength(0);
119 m_effect->setEnabled(true);
120 parent->setGraphicsEffect(m_effect);
121
122 QPushButton *press = new QPushButton;
123 press->setText(tr("Press me"));
124 connect(press, SIGNAL(clicked()), SLOT(togglePopup()));
125 m_scene.addWidget(press);
126
127 #if defined(Q_WS_S60) || defined(Q_WS_MAEMO_5)
128 press->move(200, 210);
129 #else
130 press->move(300, 500);
131 #endif
132 }
133