diff options
Diffstat (limited to 'examples/effects')
24 files changed, 828 insertions, 0 deletions
diff --git a/examples/effects/blurpicker/blureffect.cpp b/examples/effects/blurpicker/blureffect.cpp new file mode 100644 index 0000000..82be44f --- /dev/null +++ b/examples/effects/blurpicker/blureffect.cpp @@ -0,0 +1,69 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "blureffect.h" + +#include <QDebug> + +BlurEffect::BlurEffect(QGraphicsItem *item) + : QGraphicsBlurEffect() + , m_baseLine(200), item(item) +{ +} + +void BlurEffect::adjustForItem() +{ + qreal y = m_baseLine - item->pos().y(); + qreal radius = qBound(0.0, y / 32, 16.0); + setBlurRadius(radius); +} + +QRectF BlurEffect::boundingRect() const +{ + const_cast<BlurEffect *>(this)->adjustForItem(); + return QGraphicsBlurEffect::boundingRect(); +} + +void BlurEffect::draw(QPainter *painter, QGraphicsEffectSource *source) +{ + adjustForItem(); + QGraphicsBlurEffect::draw(painter, source); +} diff --git a/examples/effects/blurpicker/blureffect.h b/examples/effects/blurpicker/blureffect.h new file mode 100644 index 0000000..89694b6 --- /dev/null +++ b/examples/effects/blurpicker/blureffect.h @@ -0,0 +1,67 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef BLUREFFECT_H +#define BLUREFFECT_H + +#include <QGraphicsEffect> +#include <QGraphicsItem> + +class BlurEffect: public QGraphicsBlurEffect +{ +public: + BlurEffect(QGraphicsItem *item); + + void setBaseLine(qreal y) { m_baseLine = y; } + + QRectF boundingRect() const; + + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + void adjustForItem(); + +private: + qreal m_baseLine; + QGraphicsItem *item; +}; + +#endif // BLUREFFECT_H diff --git a/examples/effects/blurpicker/blurpicker.cpp b/examples/effects/blurpicker/blurpicker.cpp new file mode 100644 index 0000000..9904dfa --- /dev/null +++ b/examples/effects/blurpicker/blurpicker.cpp @@ -0,0 +1,132 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "blurpicker.h" + +#include <QtGui> + +#include "blureffect.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +BlurPicker::BlurPicker(QWidget *parent): QGraphicsView(parent), m_index(0.0) +{ + setBackgroundBrush(QPixmap(":/images/background.jpg")); + setScene(&m_scene); + + setupScene(); + updateIconPositions(); + + connect(&m_timeLine, SIGNAL(valueChanged(qreal)), SLOT(updateIconPositions())); + m_timeLine.setDuration(400); + + setRenderHint(QPainter::Antialiasing, true); + setFrameStyle(QFrame::NoFrame); +} + +void BlurPicker::updateIconPositions() +{ + m_index = m_timeLine.currentFrame() / 1000.0; + + qreal baseline = 0; + for (int i = 0; i < m_icons.count(); ++i) { + QGraphicsItem *icon = m_icons[i]; + qreal a = ((i + m_index) * 2 * M_PI) / m_icons.count(); + qreal xs = 170 * sin(a); + qreal ys = 100 * cos(a); + QPointF pos(xs, ys); + pos = QTransform().rotate(-20).map(pos); + pos -= QPointF(40, 40); + icon->setPos(pos); + baseline = qMax(baseline, ys); + static_cast<BlurEffect *>(icon->graphicsEffect())->setBaseLine(baseline); + } + + m_scene.update(); +} + +void BlurPicker::setupScene() +{ + m_scene.setSceneRect(-200, -120, 400, 240); + + QStringList names; + names << ":/images/accessories-calculator.png"; + names << ":/images/accessories-text-editor.png"; + names << ":/images/help-browser.png"; + names << ":/images/internet-group-chat.png"; + names << ":/images/internet-mail.png"; + names << ":/images/internet-web-browser.png"; + names << ":/images/office-calendar.png"; + names << ":/images/system-users.png"; + + for (int i = 0; i < names.count(); i++) { + QPixmap pixmap(names[i]); + QGraphicsPixmapItem *icon = m_scene.addPixmap(pixmap); + icon->setZValue(1); + icon->setGraphicsEffect(new BlurEffect(icon)); + m_icons << icon; + } + + QGraphicsPixmapItem *bg = m_scene.addPixmap(QPixmap(":/images/background.jpg")); + bg->setZValue(0); + bg->setPos(-200, -150); +} + +void BlurPicker::keyPressEvent(QKeyEvent *event) +{ + if (event->key() == Qt::Key_Left) { + if (m_timeLine.state() == QTimeLine::NotRunning) { + m_timeLine.setFrameRange(m_index * 1000, m_index * 1000 - 1000); + m_timeLine.start(); + event->accept(); + } + } + + if (event->key() == Qt::Key_Right) { + if (m_timeLine.state() == QTimeLine::NotRunning) { + m_timeLine.setFrameRange(m_index * 1000, m_index * 1000 + 1000); + m_timeLine.start(); + event->accept(); + } + } +} diff --git a/examples/effects/blurpicker/blurpicker.h b/examples/effects/blurpicker/blurpicker.h new file mode 100644 index 0000000..b7ea3b4 --- /dev/null +++ b/examples/effects/blurpicker/blurpicker.h @@ -0,0 +1,74 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef BLURPICKER_H +#define BLURPICKER_H + +#include <QGraphicsEffect> +#include <QGraphicsView> +#include <QTimeLine> + +#include "blureffect.h" + +class BlurPicker: public QGraphicsView +{ + Q_OBJECT + +public: + BlurPicker(QWidget *parent = 0); + +protected: + void keyPressEvent(QKeyEvent *event); + +private slots: + void updateIconPositions(); + +private: + void setupScene(); + +private: + qreal m_index; + QGraphicsScene m_scene; + QList<QGraphicsItem*> m_icons; + QTimeLine m_timeLine; +}; + +#endif // BLURPICKER_H diff --git a/examples/effects/blurpicker/blurpicker.pro b/examples/effects/blurpicker/blurpicker.pro new file mode 100644 index 0000000..76537a9 --- /dev/null +++ b/examples/effects/blurpicker/blurpicker.pro @@ -0,0 +1,9 @@ +SOURCES += main.cpp blurpicker.cpp blureffect.cpp +HEADERS += blurpicker.h blureffect.h +RESOURCES += blurpicker.qrc + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/effects/blurpicker +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS blurpicker.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/effects/blurpicker +INSTALLS += target sources diff --git a/examples/effects/blurpicker/blurpicker.qrc b/examples/effects/blurpicker/blurpicker.qrc new file mode 100644 index 0000000..e88eaca --- /dev/null +++ b/examples/effects/blurpicker/blurpicker.qrc @@ -0,0 +1,14 @@ +<RCC> + <qresource prefix="/" > + <file>images/background.jpg</file> + <file>images/accessories-calculator.png</file> + <file>images/accessories-text-editor.png</file> + <file>images/help-browser.png</file> + <file>images/internet-group-chat.png</file> + <file>images/internet-mail.png</file> + <file>images/internet-web-browser.png</file> + <file>images/office-calendar.png</file> + <file>images/system-users.png</file> + </qresource> +</RCC> + diff --git a/examples/effects/blurpicker/images/README.txt b/examples/effects/blurpicker/images/README.txt new file mode 100644 index 0000000..0927e17 --- /dev/null +++ b/examples/effects/blurpicker/images/README.txt @@ -0,0 +1,5 @@ +The background is taken from a public domain photo at: +http://www.photos8.com/view/computer_board2-800x600.html + +All other icons are from the Tango Desktop project: +http://tango.freedesktop.org/Tango_Desktop_Project diff --git a/examples/effects/blurpicker/images/accessories-calculator.png b/examples/effects/blurpicker/images/accessories-calculator.png Binary files differnew file mode 100644 index 0000000..4e7661f --- /dev/null +++ b/examples/effects/blurpicker/images/accessories-calculator.png diff --git a/examples/effects/blurpicker/images/accessories-text-editor.png b/examples/effects/blurpicker/images/accessories-text-editor.png Binary files differnew file mode 100644 index 0000000..33bef0b --- /dev/null +++ b/examples/effects/blurpicker/images/accessories-text-editor.png diff --git a/examples/effects/blurpicker/images/background.jpg b/examples/effects/blurpicker/images/background.jpg Binary files differnew file mode 100644 index 0000000..e75b388 --- /dev/null +++ b/examples/effects/blurpicker/images/background.jpg diff --git a/examples/effects/blurpicker/images/help-browser.png b/examples/effects/blurpicker/images/help-browser.png Binary files differnew file mode 100644 index 0000000..8ef4fae --- /dev/null +++ b/examples/effects/blurpicker/images/help-browser.png diff --git a/examples/effects/blurpicker/images/internet-group-chat.png b/examples/effects/blurpicker/images/internet-group-chat.png Binary files differnew file mode 100644 index 0000000..dd92d93 --- /dev/null +++ b/examples/effects/blurpicker/images/internet-group-chat.png diff --git a/examples/effects/blurpicker/images/internet-mail.png b/examples/effects/blurpicker/images/internet-mail.png Binary files differnew file mode 100644 index 0000000..7e6b93b --- /dev/null +++ b/examples/effects/blurpicker/images/internet-mail.png diff --git a/examples/effects/blurpicker/images/internet-web-browser.png b/examples/effects/blurpicker/images/internet-web-browser.png Binary files differnew file mode 100644 index 0000000..a979a92 --- /dev/null +++ b/examples/effects/blurpicker/images/internet-web-browser.png diff --git a/examples/effects/blurpicker/images/office-calendar.png b/examples/effects/blurpicker/images/office-calendar.png Binary files differnew file mode 100644 index 0000000..e095906 --- /dev/null +++ b/examples/effects/blurpicker/images/office-calendar.png diff --git a/examples/effects/blurpicker/images/system-users.png b/examples/effects/blurpicker/images/system-users.png Binary files differnew file mode 100644 index 0000000..a7f630a --- /dev/null +++ b/examples/effects/blurpicker/images/system-users.png diff --git a/examples/effects/blurpicker/main.cpp b/examples/effects/blurpicker/main.cpp new file mode 100644 index 0000000..b88a51d --- /dev/null +++ b/examples/effects/blurpicker/main.cpp @@ -0,0 +1,55 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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(); +} diff --git a/examples/effects/effects.pro b/examples/effects/effects.pro new file mode 100644 index 0000000..8ba0324 --- /dev/null +++ b/examples/effects/effects.pro @@ -0,0 +1,12 @@ +TEMPLATE = \ + subdirs +SUBDIRS = \ + blurpicker \ + lighting + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/effects +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS effects.pro README +sources.path = $$[QT_INSTALL_EXAMPLES]/effects +INSTALLS += target sources + diff --git a/examples/effects/lighting/lighting.cpp b/examples/effects/lighting/lighting.cpp new file mode 100644 index 0000000..63f0a6c --- /dev/null +++ b/examples/effects/lighting/lighting.cpp @@ -0,0 +1,119 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "lighting.h" + +#include <QtGui> + +#include "shadoweffect.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +Lighting::Lighting(QWidget *parent): QGraphicsView(parent), angle(0.0) +{ + setScene(&m_scene); + + setupScene(); + + QTimer *timer = new QTimer(this); + connect(timer, SIGNAL(timeout()), SLOT(animate())); + timer->setInterval(30); + timer->start(); + + setRenderHint(QPainter::Antialiasing, true); + setFrameStyle(QFrame::NoFrame); +} + +void Lighting::setupScene() +{ + m_scene.setSceneRect(-300, -200, 600, 460); + + QLinearGradient linearGrad(QPointF(-100, -100), QPointF(100, 100)); + linearGrad.setColorAt(0, QColor(255, 255, 255)); + linearGrad.setColorAt(1, QColor(192, 192, 255)); + setBackgroundBrush(linearGrad); + + QRadialGradient radialGrad(30, 30, 30); + radialGrad.setColorAt(0, Qt::yellow); + radialGrad.setColorAt(0.2, Qt::yellow); + radialGrad.setColorAt(1, Qt::transparent); + QPixmap pixmap(60, 60); + pixmap.fill(Qt::transparent); + QPainter painter(&pixmap); + painter.setPen(Qt::NoPen); + painter.setBrush(radialGrad); + painter.drawEllipse(0, 0, 60, 60); + painter.end(); + + m_lightSource = m_scene.addPixmap(pixmap); + m_lightSource->setZValue(2); + + for (int i = -2; i < 3; ++i) + for (int j = -2; j < 3; ++j) { + QAbstractGraphicsShapeItem *item; + if ((i + j) & 1) + item = new QGraphicsEllipseItem(0, 0, 50, 50); + else + item = new QGraphicsRectItem(0, 0, 50, 50); + + item->setPen(QPen(Qt::black)); + item->setBrush(QBrush(Qt::white)); + item->setGraphicsEffect(new ShadowEffect(item, m_lightSource)); + item->setZValue(1); + item->setPos(i * 80, j * 80); + m_scene.addItem(item); + m_items << item; + } + + +} + +void Lighting::animate() +{ + angle += (M_PI / 30); + qreal xs = 200 * sin(angle) - 40 + 25; + qreal ys = 200 * cos(angle) - 40 + 25; + m_lightSource->setPos(xs, ys); + m_scene.update(); +} + diff --git a/examples/effects/lighting/lighting.h b/examples/effects/lighting/lighting.h new file mode 100644 index 0000000..70a4d48 --- /dev/null +++ b/examples/effects/lighting/lighting.h @@ -0,0 +1,70 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef LIGHTING_H +#define LIGHTING_H + +#include <QGraphicsEffect> +#include <QGraphicsView> + +#include "shadoweffect.h" + +class Lighting: public QGraphicsView +{ + Q_OBJECT + +public: + Lighting(QWidget *parent = 0); + +private slots: + void animate(); + +private: + void setupScene(); + +private: + qreal angle; + QGraphicsScene m_scene; + QGraphicsItem *m_lightSource; + QList<QGraphicsItem*> m_items; +}; + +#endif // LIGHTING_H diff --git a/examples/effects/lighting/lighting.pro b/examples/effects/lighting/lighting.pro new file mode 100644 index 0000000..ea9d5f6 --- /dev/null +++ b/examples/effects/lighting/lighting.pro @@ -0,0 +1,8 @@ +SOURCES += main.cpp lighting.cpp shadoweffect.cpp +HEADERS += lighting.h shadoweffect.h + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/effects/lighting +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS lighting.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/effects/lighting +INSTALLS += target sources diff --git a/examples/effects/lighting/main.cpp b/examples/effects/lighting/main.cpp new file mode 100644 index 0000000..07415f6 --- /dev/null +++ b/examples/effects/lighting/main.cpp @@ -0,0 +1,55 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "lighting.h" +#include <QApplication> + +int main(int argc, char **argv) +{ + QApplication app(argc, argv); + + Lighting lighting; + lighting.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Lighting and Shadows")); + lighting.resize(640, 480); + lighting.show(); + + return app.exec(); +} diff --git a/examples/effects/lighting/shadoweffect.cpp b/examples/effects/lighting/shadoweffect.cpp new file mode 100644 index 0000000..f447531 --- /dev/null +++ b/examples/effects/lighting/shadoweffect.cpp @@ -0,0 +1,74 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "shadoweffect.h" + +#include <math.h> + +ShadowEffect::ShadowEffect(QGraphicsItem *item, QGraphicsItem *source) + : QGraphicsShadowEffect() + , item(item), m_lightSource(source) +{ + setBlurRadius(8); +} + +void ShadowEffect::adjustForItem() +{ + QPointF delta = item->pos() - m_lightSource->pos(); + setShadowOffset(delta.toPoint() / 30); + + qreal dx = delta.x(); + qreal dy = delta.y(); + qreal dd = sqrt(dx * dx + dy * dy); + setOpacity(qBound(0.4, 1 - dd / 200.0, 0.7)); +} + +QRectF ShadowEffect::boundingRectFor(const QRectF &rect) const +{ + const_cast<ShadowEffect *>(this)->adjustForItem(); + return QGraphicsShadowEffect::boundingRectFor(rect); +} + +void ShadowEffect::draw(QPainter *painter, QGraphicsEffectSource *source) +{ + adjustForItem(); + QGraphicsShadowEffect::draw(painter, source); +} diff --git a/examples/effects/lighting/shadoweffect.h b/examples/effects/lighting/shadoweffect.h new file mode 100644 index 0000000..68318b0 --- /dev/null +++ b/examples/effects/lighting/shadoweffect.h @@ -0,0 +1,65 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef SHADOWEFFECT_H +#define SHADOWEFFECT_H + +#include <QGraphicsEffect> +#include <QGraphicsItem> + +class ShadowEffect: public QGraphicsShadowEffect +{ +public: + ShadowEffect(QGraphicsItem *item, QGraphicsItem *source); + + QRectF boundingRectFor(const QRectF &rect) const; + + void draw(QPainter *painter, QGraphicsEffectSource *source); + +private: + void adjustForItem(); + +private: + QGraphicsItem *item; + QGraphicsItem *m_lightSource; +}; + +#endif // SHADOWEFFECT_H |
