diff options
Diffstat (limited to 'tests/manual/examples/widgets/effects/fademessage/fademessage.cpp')
-rw-r--r-- | tests/manual/examples/widgets/effects/fademessage/fademessage.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/effects/fademessage/fademessage.cpp b/tests/manual/examples/widgets/effects/fademessage/fademessage.cpp new file mode 100644 index 0000000000..3d8385020b --- /dev/null +++ b/tests/manual/examples/widgets/effects/fademessage/fademessage.cpp @@ -0,0 +1,91 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include "fademessage.h" + +#include <QtWidgets> + +FadeMessage::FadeMessage(QWidget *parent): QGraphicsView(parent) +{ + setScene(&m_scene); + setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + + setupScene(); + + m_animation = new QPropertyAnimation(m_effect, "strength", this); + m_animation->setDuration(500); + m_animation->setEasingCurve(QEasingCurve::InOutSine); + m_animation->setStartValue(0); + m_animation->setEndValue(1); + + setRenderHint(QPainter::Antialiasing, true); + setFrameStyle(QFrame::NoFrame); +} + +void FadeMessage::togglePopup() +{ + if (m_message->isVisible()) { + m_message->setVisible(false); + m_animation->setDirection(QAbstractAnimation::Backward); + } else { + m_message->setVisible(true); + m_animation->setDirection(QAbstractAnimation::Forward); + } + m_animation->start(); +} + +void FadeMessage::setupScene() +{ + QGraphicsRectItem *parent = m_scene.addRect(0, 0, 800, 600); + parent->setPen(Qt::NoPen); + parent->setZValue(0); + + QGraphicsPixmapItem *bg = m_scene.addPixmap(QPixmap(":/background.jpg")); + bg->setParentItem(parent); + bg->setZValue(-1); + + for (int i = 1; i < 5; ++i) + for (int j = 2; j < 5; ++j) { + QGraphicsRectItem *item = m_scene.addRect(i * 50, (j - 1) * 50, 38, 38); + item->setParentItem(parent); + item->setZValue(1); + int hue = 12 * (i * 5 + j); + item->setBrush(QColor::fromHsv(hue, 128, 128)); + } + + QFont font; + font.setPointSize(font.pointSize() * 2); + font.setBold(true); + QFontMetrics fontMetrics(font); + int fh = fontMetrics.height(); + + QString sceneText = "Qt Everywhere!"; + int sceneTextWidth = fontMetrics.horizontalAdvance(sceneText); + + QGraphicsRectItem *block = m_scene.addRect(50, 300, sceneTextWidth, fh + 3); + block->setPen(Qt::NoPen); + block->setBrush(QColor(102, 153, 51)); + + QGraphicsTextItem *text = m_scene.addText(sceneText, font); + text->setDefaultTextColor(Qt::white); + text->setPos(50, 300); + block->setZValue(2); + block->hide(); + + text->setParentItem(block); + m_message = block; + + m_effect = new QGraphicsColorizeEffect; + m_effect->setColor(QColor(122, 193, 66)); + m_effect->setStrength(0); + m_effect->setEnabled(true); + parent->setGraphicsEffect(m_effect); + + QPushButton *press = new QPushButton; + press->setText(tr("Press me")); + connect(press, &QAbstractButton::clicked, this, &FadeMessage::togglePopup); + m_scene.addWidget(press); + + press->move(300, 500); +} |