diff options
Diffstat (limited to 'examples/widgets/painting/concentriccircles')
7 files changed, 436 insertions, 0 deletions
diff --git a/examples/widgets/painting/concentriccircles/circlewidget.cpp b/examples/widgets/painting/concentriccircles/circlewidget.cpp new file mode 100644 index 0000000000..2691f20602 --- /dev/null +++ b/examples/widgets/painting/concentriccircles/circlewidget.cpp @@ -0,0 +1,124 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include "circlewidget.h" + +#include <stdlib.h> + +//! [0] +CircleWidget::CircleWidget(QWidget *parent) + : QWidget(parent) +{ + floatBased = false; + antialiased = false; + frameNo = 0; + + setBackgroundRole(QPalette::Base); + setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); +} +//! [0] + +//! [1] +void CircleWidget::setFloatBased(bool floatBased) +{ + this->floatBased = floatBased; + update(); +} +//! [1] + +//! [2] +void CircleWidget::setAntialiased(bool antialiased) +{ + this->antialiased = antialiased; + update(); +} +//! [2] + +//! [3] +QSize CircleWidget::minimumSizeHint() const +{ + return QSize(50, 50); +} +//! [3] + +//! [4] +QSize CircleWidget::sizeHint() const +{ + return QSize(180, 180); +} +//! [4] + +//! [5] +void CircleWidget::nextAnimationFrame() +{ + ++frameNo; + update(); +} +//! [5] + +//! [6] +void CircleWidget::paintEvent(QPaintEvent *) +{ + QPainter painter(this); + painter.setRenderHint(QPainter::Antialiasing, antialiased); + painter.translate(width() / 2, height() / 2); +//! [6] + +//! [7] + for (int diameter = 0; diameter < 256; diameter += 9) { + int delta = abs((frameNo % 128) - diameter / 2); + int alpha = 255 - (delta * delta) / 4 - diameter; +//! [7] //! [8] + if (alpha > 0) { + painter.setPen(QPen(QColor(0, diameter / 2, 127, alpha), 3)); + + if (floatBased) { + painter.drawEllipse(QRectF(-diameter / 2.0, -diameter / 2.0, + diameter, diameter)); + } else { + painter.drawEllipse(QRect(-diameter / 2, -diameter / 2, + diameter, diameter)); + } + } + } +} +//! [8] diff --git a/examples/widgets/painting/concentriccircles/circlewidget.h b/examples/widgets/painting/concentriccircles/circlewidget.h new file mode 100644 index 0000000000..c2d4de7092 --- /dev/null +++ b/examples/widgets/painting/concentriccircles/circlewidget.h @@ -0,0 +1,73 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef CIRCLEWIDGET_H +#define CIRCLEWIDGET_H + +#include <QWidget> + +//! [0] +class CircleWidget : public QWidget +{ + Q_OBJECT + +public: + CircleWidget(QWidget *parent = 0); + + void setFloatBased(bool floatBased); + void setAntialiased(bool antialiased); + + QSize minimumSizeHint() const; + QSize sizeHint() const; + +public slots: + void nextAnimationFrame(); + +protected: + void paintEvent(QPaintEvent *event); + +private: + bool floatBased; + bool antialiased; + int frameNo; +}; +//! [0] + +#endif diff --git a/examples/widgets/painting/concentriccircles/concentriccircles.desktop b/examples/widgets/painting/concentriccircles/concentriccircles.desktop new file mode 100644 index 0000000000..7007f192bc --- /dev/null +++ b/examples/widgets/painting/concentriccircles/concentriccircles.desktop @@ -0,0 +1,11 @@ +[Desktop Entry] +Encoding=UTF-8 +Version=1.0 +Type=Application +Terminal=false +Name=Concentric Circles +Exec=/opt/usr/bin/concentriccircles +Icon=concentriccircles +X-Window-Icon= +X-HildonDesk-ShowInToolbar=true +X-Osso-Type=application/x-executable diff --git a/examples/widgets/painting/concentriccircles/concentriccircles.pro b/examples/widgets/painting/concentriccircles/concentriccircles.pro new file mode 100644 index 0000000000..0f87b991ed --- /dev/null +++ b/examples/widgets/painting/concentriccircles/concentriccircles.pro @@ -0,0 +1,14 @@ +HEADERS = circlewidget.h \ + window.h +SOURCES = circlewidget.cpp \ + main.cpp \ + window.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/painting/concentriccircles +sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS concentriccircles.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/painting/concentriccircles +INSTALLS += target sources + +QT += widgets + diff --git a/examples/widgets/painting/concentriccircles/main.cpp b/examples/widgets/painting/concentriccircles/main.cpp new file mode 100644 index 0000000000..dcbf1c0449 --- /dev/null +++ b/examples/widgets/painting/concentriccircles/main.cpp @@ -0,0 +1,51 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QApplication> + +#include "window.h" + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + Window window; + window.show(); + return app.exec(); +} diff --git a/examples/widgets/painting/concentriccircles/window.cpp b/examples/widgets/painting/concentriccircles/window.cpp new file mode 100644 index 0000000000..d946842029 --- /dev/null +++ b/examples/widgets/painting/concentriccircles/window.cpp @@ -0,0 +1,93 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include "circlewidget.h" +#include "window.h" + +//! [0] +Window::Window() +{ + aliasedLabel = createLabel(tr("Aliased")); + antialiasedLabel = createLabel(tr("Antialiased")); + intLabel = createLabel(tr("Int")); + floatLabel = createLabel(tr("Float")); + + QGridLayout *layout = new QGridLayout; + layout->addWidget(aliasedLabel, 0, 1); + layout->addWidget(antialiasedLabel, 0, 2); + layout->addWidget(intLabel, 1, 0); + layout->addWidget(floatLabel, 2, 0); +//! [0] + +//! [1] + QTimer *timer = new QTimer(this); + + for (int i = 0; i < 2; ++i) { + for (int j = 0; j < 2; ++j) { + circleWidgets[i][j] = new CircleWidget; + circleWidgets[i][j]->setAntialiased(j != 0); + circleWidgets[i][j]->setFloatBased(i != 0); + + connect(timer, SIGNAL(timeout()), + circleWidgets[i][j], SLOT(nextAnimationFrame())); + + layout->addWidget(circleWidgets[i][j], i + 1, j + 1); + } + } +//! [1] //! [2] + timer->start(100); + setLayout(layout); + + setWindowTitle(tr("Concentric Circles")); +} +//! [2] + +//! [3] +QLabel *Window::createLabel(const QString &text) +{ + QLabel *label = new QLabel(text); + label->setAlignment(Qt::AlignCenter); + label->setMargin(2); + label->setFrameStyle(QFrame::Box | QFrame::Sunken); + return label; +} +//! [3] diff --git a/examples/widgets/painting/concentriccircles/window.h b/examples/widgets/painting/concentriccircles/window.h new file mode 100644 index 0000000000..a066ddb702 --- /dev/null +++ b/examples/widgets/painting/concentriccircles/window.h @@ -0,0 +1,70 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef WINDOW_H +#define WINDOW_H + +#include <QWidget> + +QT_BEGIN_NAMESPACE +class QLabel; +QT_END_NAMESPACE +class CircleWidget; + +//! [0] +class Window : public QWidget +{ + Q_OBJECT + +public: + Window(); + +private: + QLabel *createLabel(const QString &text); + + QLabel *aliasedLabel; + QLabel *antialiasedLabel; + QLabel *intLabel; + QLabel *floatLabel; + CircleWidget *circleWidgets[2][2]; +}; +//! [0] + +#endif |