qt 6.5.1 original
58
examples/widgets/effects/blurpicker/CMakeLists.txt
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# Copyright (C) 2022 The Qt Company Ltd.
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# SPDX-License-Identifier: BSD-3-Clause
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cmake_minimum_required(VERSION 3.16)
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project(blurpicker LANGUAGES CXX)
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if(NOT DEFINED INSTALL_EXAMPLESDIR)
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set(INSTALL_EXAMPLESDIR "examples")
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endif()
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set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/effects/blurpicker")
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find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
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qt_standard_project_setup()
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qt_add_executable(blurpicker
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blureffect.cpp blureffect.h
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blurpicker.cpp blurpicker.h
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main.cpp
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)
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set_target_properties(blurpicker PROPERTIES
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WIN32_EXECUTABLE TRUE
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MACOSX_BUNDLE TRUE
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)
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target_link_libraries(blurpicker PRIVATE
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Qt6::Core
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Qt6::Gui
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Qt6::Widgets
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)
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# Resources:
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set(blurpicker_resource_files
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"images/accessories-calculator.png"
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"images/accessories-text-editor.png"
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"images/background.jpg"
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"images/help-browser.png"
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"images/internet-group-chat.png"
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"images/internet-mail.png"
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"images/internet-web-browser.png"
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"images/office-calendar.png"
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"images/system-users.png"
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)
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qt_add_resources(blurpicker "blurpicker"
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PREFIX
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"/"
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FILES
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${blurpicker_resource_files}
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)
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install(TARGETS blurpicker
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RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
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BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
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LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
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)
|
31
examples/widgets/effects/blurpicker/blureffect.cpp
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "blureffect.h"
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#include <QDebug>
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BlurEffect::BlurEffect(QGraphicsItem *item)
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: QGraphicsBlurEffect()
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, m_baseLine(200), item(item)
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{
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}
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void BlurEffect::adjustForItem()
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{
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qreal y = m_baseLine - item->pos().y();
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qreal radius = qBound(qreal(0.0), y / 32, qreal(16.0));
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setBlurRadius(radius);
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}
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QRectF BlurEffect::boundingRect() const
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{
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const_cast<BlurEffect *>(this)->adjustForItem();
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return QGraphicsBlurEffect::boundingRect();
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}
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void BlurEffect::draw(QPainter *painter)
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{
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adjustForItem();
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QGraphicsBlurEffect::draw(painter);
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}
|
29
examples/widgets/effects/blurpicker/blureffect.h
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef BLUREFFECT_H
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#define BLUREFFECT_H
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#include <QGraphicsEffect>
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#include <QGraphicsItem>
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class BlurEffect: public QGraphicsBlurEffect
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{
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public:
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BlurEffect(QGraphicsItem *item);
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void setBaseLine(qreal y) { m_baseLine = y; }
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QRectF boundingRect() const;
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void draw(QPainter *painter) override;
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private:
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void adjustForItem();
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private:
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qreal m_baseLine;
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QGraphicsItem *item;
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};
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#endif // BLUREFFECT_H
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122
examples/widgets/effects/blurpicker/blurpicker.cpp
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "blurpicker.h"
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#include <QtWidgets>
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#include <QtCore/qmath.h>
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#include <qmath.h>
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#include "blureffect.h"
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BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0), m_animation(this, "index")
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{
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setBackgroundBrush(QPixmap(":/images/background.jpg"));
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setScene(new QGraphicsScene(this));
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setupScene();
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setIndex(0);
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m_animation.setDuration(400);
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m_animation.setEasingCurve(QEasingCurve::InOutSine);
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setRenderHint(QPainter::Antialiasing, true);
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setFrameStyle(QFrame::NoFrame);
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}
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qreal BlurPicker::index() const
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{
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return m_index;
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}
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void BlurPicker::setIndex(qreal index)
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{
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m_index = index;
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qreal baseline = 0;
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const qreal iconAngle = 2 * M_PI / m_icons.count();
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for (int i = 0; i < m_icons.count(); ++i) {
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QGraphicsItem *icon = m_icons[i];
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qreal a = (i + m_index) * iconAngle;
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qreal xs = 170 * qSin(a);
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qreal ys = 100 * qCos(a);
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QPointF pos(xs, ys);
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pos = QTransform().rotate(-20).map(pos);
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pos -= QPointF(40, 40);
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icon->setPos(pos);
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baseline = qMax(baseline, ys);
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static_cast<BlurEffect *>(icon->graphicsEffect())->setBaseLine(baseline);
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}
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scene()->update();
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}
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void BlurPicker::setupScene()
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{
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scene()->setSceneRect(-200, -120, 400, 240);
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QStringList names;
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names << ":/images/accessories-calculator.png";
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names << ":/images/accessories-text-editor.png";
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names << ":/images/help-browser.png";
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names << ":/images/internet-group-chat.png";
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names << ":/images/internet-mail.png";
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names << ":/images/internet-web-browser.png";
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names << ":/images/office-calendar.png";
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names << ":/images/system-users.png";
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for (int i = 0; i < names.count(); i++) {
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QPixmap pixmap(names[i]);
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QGraphicsPixmapItem *icon = scene()->addPixmap(pixmap);
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icon->setZValue(1);
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icon->setGraphicsEffect(new BlurEffect(icon));
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m_icons << icon;
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}
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QGraphicsPixmapItem *bg = scene()->addPixmap(QPixmap(":/images/background.jpg"));
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bg->setZValue(0);
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bg->setPos(-200, -150);
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}
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void BlurPicker::keyPressEvent(QKeyEvent *event)
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{
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int delta = 0;
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switch (event->key())
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{
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case Qt::Key_Left:
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delta = -1;
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break;
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case Qt::Key_Right:
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delta = 1;
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break;
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default:
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break;
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}
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if (m_animation.state() == QAbstractAnimation::Stopped && delta) {
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m_animation.setEndValue(m_index + delta);
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m_animation.start();
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event->accept();
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}
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}
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void BlurPicker::resizeEvent(QResizeEvent * /* event */)
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{
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}
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void BlurPicker::mousePressEvent(QMouseEvent *event)
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{
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int delta = 0;
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if (event->position().x() > (width() / 2))
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{
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delta = 1;
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}
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else
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{
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delta = -1;
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}
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if (m_animation.state() == QAbstractAnimation::Stopped && delta) {
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m_animation.setEndValue(m_index + delta);
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m_animation.start();
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event->accept();
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}
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}
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38
examples/widgets/effects/blurpicker/blurpicker.h
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef BLURPICKER_H
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#define BLURPICKER_H
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#include <QGraphicsEffect>
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#include <QGraphicsView>
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#include <QPropertyAnimation>
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#include "blureffect.h"
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class BlurPicker: public QGraphicsView
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{
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Q_OBJECT
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Q_PROPERTY(qreal index READ index WRITE setIndex)
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public:
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BlurPicker(QWidget *parent = nullptr);
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qreal index() const;
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void setIndex(qreal);
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protected:
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void keyPressEvent(QKeyEvent *event) override;
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void resizeEvent(QResizeEvent *event) override;
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void mousePressEvent(QMouseEvent *event) override;
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private:
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void setupScene();
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private:
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qreal m_index;
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QList<QGraphicsItem*> m_icons;
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QPropertyAnimation m_animation;
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};
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#endif // BLURPICKER_H
|
9
examples/widgets/effects/blurpicker/blurpicker.pro
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QT += widgets
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SOURCES += main.cpp blurpicker.cpp blureffect.cpp
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HEADERS += blurpicker.h blureffect.h
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RESOURCES += blurpicker.qrc
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# install
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target.path = $$[QT_INSTALL_EXAMPLES]/widgets/effects/blurpicker
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INSTALLS += target
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14
examples/widgets/effects/blurpicker/blurpicker.qrc
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<RCC>
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<qresource prefix="/" >
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<file>images/background.jpg</file>
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<file>images/accessories-calculator.png</file>
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<file>images/accessories-text-editor.png</file>
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<file>images/help-browser.png</file>
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<file>images/internet-group-chat.png</file>
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<file>images/internet-mail.png</file>
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<file>images/internet-web-browser.png</file>
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<file>images/office-calendar.png</file>
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<file>images/system-users.png</file>
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</qresource>
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</RCC>
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|
5
examples/widgets/effects/blurpicker/images/README.txt
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The background is taken from a public domain photo at:
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http://www.photos8.com/view/computer_board2-800x600.html
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All other icons are from the Tango Desktop project:
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http://tango.freedesktop.org/Tango_Desktop_Project
|
After Width: | Height: | Size: 3.7 KiB |
After Width: | Height: | Size: 4.6 KiB |
BIN
examples/widgets/effects/blurpicker/images/background.jpg
Normal file
After Width: | Height: | Size: 16 KiB |
BIN
examples/widgets/effects/blurpicker/images/help-browser.png
Normal file
After Width: | Height: | Size: 5.3 KiB |
After Width: | Height: | Size: 2.7 KiB |
BIN
examples/widgets/effects/blurpicker/images/internet-mail.png
Normal file
After Width: | Height: | Size: 3.8 KiB |
After Width: | Height: | Size: 6.2 KiB |
BIN
examples/widgets/effects/blurpicker/images/office-calendar.png
Normal file
After Width: | Height: | Size: 3.9 KiB |
BIN
examples/widgets/effects/blurpicker/images/system-users.png
Normal file
After Width: | Height: | Size: 5.2 KiB |
18
examples/widgets/effects/blurpicker/main.cpp
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// Copyright (C) 2016 The Qt Company Ltd.
|
||||
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
|
||||
|
||||
#include "blurpicker.h"
|
||||
#include <QApplication>
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
QApplication app(argc, argv);
|
||||
|
||||
BlurPicker blurPicker;
|
||||
blurPicker.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Application Picker"));
|
||||
|
||||
blurPicker.setFixedSize(400, 300);
|
||||
blurPicker.show();
|
||||
|
||||
return app.exec();
|
||||
}
|