diff options
Diffstat (limited to 'doc/src/snippets/image')
-rw-r--r-- | doc/src/snippets/image/image.cpp | 104 | ||||
-rw-r--r-- | doc/src/snippets/image/supportedformat.cpp | 52 |
2 files changed, 156 insertions, 0 deletions
diff --git a/doc/src/snippets/image/image.cpp b/doc/src/snippets/image/image.cpp new file mode 100644 index 0000000000..62d83089d3 --- /dev/null +++ b/doc/src/snippets/image/image.cpp @@ -0,0 +1,104 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation 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 <QtGui> + +int main() +{ + int x, y; + { + // BIT ACCESS + QImage image; + // sets bit at (x, y) to 1 + if (image.format() == QImage::Format_MonoLSB) + image.scanLine(y)[x >> 3] |= 1 << (x & 7); + else + image.scanLine(y)[x >> 3] |= 1 << (7 - (x & 7)); + } + + { + // 8-BIT ACCESS + QImage image; + // set entry 19 in the color table to yellow + image.setColor(19, qRgb(255, 255, 0)); + + // set 8 bit pixel at (x,y) to value yellow (in color table) + image.scanLine(y)[x] = 19; + } + + { + // 32-BIT + QImage image; + // sets 32 bit pixel at (x,y) to yellow. + uint *ptr = reinterpret_cast<uint *>(image.scanLine(y)) + x; + *ptr = qRgb(255, 255, 0); + } + + { + // SAVE +//! [0] + QImage image; + QByteArray ba; + QBuffer buffer(&ba); + buffer.open(QIODevice::WriteOnly); + image.save(&buffer, "PNG"); // writes image into ba in PNG format +//! [0] + } + + { + // PIX SAVE +//! [1] + QPixmap pixmap; + QByteArray bytes; + QBuffer buffer(&bytes); + buffer.open(QIODevice::WriteOnly); + pixmap.save(&buffer, "PNG"); // writes pixmap into bytes in PNG format +//! [1] + } + + { + // MASK +//! [2] + QPixmap alpha("image-with-alpha.png"); + QPixmap alphacopy = alpha; + alphacopy.setMask(alphacopy.mask()); +//! [2] + } +} diff --git a/doc/src/snippets/image/supportedformat.cpp b/doc/src/snippets/image/supportedformat.cpp new file mode 100644 index 0000000000..55800d33f3 --- /dev/null +++ b/doc/src/snippets/image/supportedformat.cpp @@ -0,0 +1,52 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation 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 <QtGui> + +int main(int argv, char **args) +{ +//! [0] + QImageWriter writer; + writer.setFormat("png"); + if (writer.supportsOption(QImageIOHandler::Description)) + qDebug() << "Png supports embedded text"; +//! [0] + return 0; +} |