From c97104f31e23315807fe24f1424b99438f91e37a Mon Sep 17 00:00:00 2001 From: Gunnar Sletta Date: Fri, 15 Jun 2012 13:41:18 +0200 Subject: Analog clock and raster window examples Change-Id: I36586fbaa7da25208bbc1964d2708f094d0d5c98 Reviewed-by: Gunnar Sletta --- examples/gui/rasterwindow/main.cpp | 53 ++++++++++++ examples/gui/rasterwindow/rasterwindow.cpp | 124 +++++++++++++++++++++++++++++ examples/gui/rasterwindow/rasterwindow.h | 70 ++++++++++++++++ examples/gui/rasterwindow/rasterwindow.pri | 3 + examples/gui/rasterwindow/rasterwindow.pro | 7 ++ 5 files changed, 257 insertions(+) create mode 100644 examples/gui/rasterwindow/main.cpp create mode 100644 examples/gui/rasterwindow/rasterwindow.cpp create mode 100644 examples/gui/rasterwindow/rasterwindow.h create mode 100644 examples/gui/rasterwindow/rasterwindow.pri create mode 100644 examples/gui/rasterwindow/rasterwindow.pro (limited to 'examples/gui/rasterwindow') diff --git a/examples/gui/rasterwindow/main.cpp b/examples/gui/rasterwindow/main.cpp new file mode 100644 index 0000000000..4f39a0216b --- /dev/null +++ b/examples/gui/rasterwindow/main.cpp @@ -0,0 +1,53 @@ +/**************************************************************************** +** +** 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 "rasterwindow.h" + +//! [1] +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + + RasterWindow window; + window.show(); + + return app.exec(); +} +//! [1] diff --git a/examples/gui/rasterwindow/rasterwindow.cpp b/examples/gui/rasterwindow/rasterwindow.cpp new file mode 100644 index 0000000000..e999ed92b1 --- /dev/null +++ b/examples/gui/rasterwindow/rasterwindow.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 "rasterwindow.h" + +//! [1] +RasterWindow::RasterWindow(QWindow *parent) + : QWindow(parent) + , m_update_pending(false) +{ + create(); + + setGeometry(100, 100, 300, 200); + + m_backingStore = new QBackingStore(this); +} +//! [1] + + +//! [7] +bool RasterWindow::event(QEvent *event) +{ + if (event->type() == QEvent::UpdateRequest) { + m_update_pending = false; + renderNow(); + return true; + } + return QWindow::event(event); +} +//! [7] + +//! [6] +void RasterWindow::renderLater() +{ + if (!m_update_pending) { + m_update_pending = true; + QCoreApplication::postEvent(this, new QEvent(QEvent::UpdateRequest)); + } +} +//! [6] + + +//! [5] +void RasterWindow::resizeEvent(QResizeEvent *resizeEvent) +{ + m_backingStore->resize(resizeEvent->size()); + if (isExposed()) + renderNow(); +} +//! [5] + +//! [2] +void RasterWindow::exposeEvent(QExposeEvent *) +{ + if (isExposed()) { + renderNow(); + } +} +//! [2] + + +//! [3] +void RasterWindow::renderNow() +{ + if (!isExposed()) + return; + + QRect rect(0, 0, width(), height()); + m_backingStore->beginPaint(rect); + + QPaintDevice *device = m_backingStore->paintDevice(); + QPainter painter(device); + + painter.fillRect(0, 0, width(), height(), Qt::white); + render(&painter); + + m_backingStore->endPaint(); + m_backingStore->flush(rect); +} +//! [3] + +//! [4] +void RasterWindow::render(QPainter *painter) +{ + painter->drawText(QRectF(0, 0, width(), height()), Qt::AlignCenter, QStringLiteral("QWindow")); +} +//! [4] diff --git a/examples/gui/rasterwindow/rasterwindow.h b/examples/gui/rasterwindow/rasterwindow.h new file mode 100644 index 0000000000..8421727ecc --- /dev/null +++ b/examples/gui/rasterwindow/rasterwindow.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 RASTERWINDOW_H +#define RASTERWINDOW_H + +//! [1] +#include + +class RasterWindow : public QWindow +{ + Q_OBJECT +public: + explicit RasterWindow(QWindow *parent = 0); + + virtual void render(QPainter *painter); + +public slots: + void renderLater(); + void renderNow(); + +protected: + bool event(QEvent *event); + + void resizeEvent(QResizeEvent *event); + void exposeEvent(QExposeEvent *event); + +private: + QBackingStore *m_backingStore; + bool m_update_pending; +}; +//! [1] +#endif // RASTERWINDOW_H diff --git a/examples/gui/rasterwindow/rasterwindow.pri b/examples/gui/rasterwindow/rasterwindow.pri new file mode 100644 index 0000000000..8f71765b8b --- /dev/null +++ b/examples/gui/rasterwindow/rasterwindow.pri @@ -0,0 +1,3 @@ +INCLUDEPATH += $$PWD +SOURCES += $$PWD/rasterwindow.cpp +HEADERS += $$PWD/rasterwindow.h diff --git a/examples/gui/rasterwindow/rasterwindow.pro b/examples/gui/rasterwindow/rasterwindow.pro new file mode 100644 index 0000000000..a767166f54 --- /dev/null +++ b/examples/gui/rasterwindow/rasterwindow.pro @@ -0,0 +1,7 @@ +include(rasterwindow.pri) + +OTHER_FILES += \ + rasterwindow.pri + +SOURCES += \ + main.cpp -- cgit v1.2.3