From 5bbbea4c83149d6920cff2991fc2458c49a1004e Mon Sep 17 00:00:00 2001 From: Oswald Buddenhagen Date: Tue, 26 Apr 2016 14:43:01 +0200 Subject: normalize structure of plugandpaint example MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit as in other examples which come with plugins, use an additional hierarchy level which contains the app and plugin subdirs. Change-Id: I2487755967aa3474c337c8c8af10be49627b63d0 Reviewed-by: Topi Reiniö --- .../plugins/extrafilters/extrafiltersplugin.cpp | 122 +++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 examples/widgets/tools/plugandpaint/plugins/extrafilters/extrafiltersplugin.cpp (limited to 'examples/widgets/tools/plugandpaint/plugins/extrafilters/extrafiltersplugin.cpp') diff --git a/examples/widgets/tools/plugandpaint/plugins/extrafilters/extrafiltersplugin.cpp b/examples/widgets/tools/plugandpaint/plugins/extrafilters/extrafiltersplugin.cpp new file mode 100644 index 0000000000..bce8291a60 --- /dev/null +++ b/examples/widgets/tools/plugandpaint/plugins/extrafilters/extrafiltersplugin.cpp @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** 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 The Qt Company Ltd 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 + +#include +#include + +#include "extrafiltersplugin.h" + +QStringList ExtraFiltersPlugin::filters() const +{ + return QStringList() << tr("Flip Horizontally") << tr("Flip Vertically") + << tr("Smudge...") << tr("Threshold..."); +} + +QImage ExtraFiltersPlugin::filterImage(const QString &filter, + const QImage &image, QWidget *parent) +{ + QImage original = image.convertToFormat(QImage::Format_RGB32); + QImage result = original; + + if (filter == tr("Flip Horizontally")) { + for (int y = 0; y < original.height(); ++y) { + for (int x = 0; x < original.width(); ++x) { + int pixel = original.pixel(original.width() - x - 1, y); + result.setPixel(x, y, pixel); + } + } + } else if (filter == tr("Flip Vertically")) { + for (int y = 0; y < original.height(); ++y) { + for (int x = 0; x < original.width(); ++x) { + int pixel = original.pixel(x, original.height() - y - 1); + result.setPixel(x, y, pixel); + } + } + } else if (filter == tr("Smudge...")) { + bool ok; + int numIters = QInputDialog::getInt(parent, tr("Smudge Filter"), + tr("Enter number of iterations:"), + 5, 1, 20, 1, &ok); + if (ok) { + for (int i = 0; i < numIters; ++i) { + for (int y = 1; y < original.height() - 1; ++y) { + for (int x = 1; x < original.width() - 1; ++x) { + int p1 = original.pixel(x, y); + int p2 = original.pixel(x, y + 1); + int p3 = original.pixel(x, y - 1); + int p4 = original.pixel(x + 1, y); + int p5 = original.pixel(x - 1, y); + + int red = (qRed(p1) + qRed(p2) + qRed(p3) + qRed(p4) + + qRed(p5)) / 5; + int green = (qGreen(p1) + qGreen(p2) + qGreen(p3) + + qGreen(p4) + qGreen(p5)) / 5; + int blue = (qBlue(p1) + qBlue(p2) + qBlue(p3) + + qBlue(p4) + qBlue(p5)) / 5; + int alpha = (qAlpha(p1) + qAlpha(p2) + qAlpha(p3) + + qAlpha(p4) + qAlpha(p5)) / 5; + + result.setPixel(x, y, qRgba(red, green, blue, alpha)); + } + } + } + } + } else if (filter == tr("Threshold...")) { + bool ok; + int threshold = QInputDialog::getInt(parent, tr("Threshold Filter"), + tr("Enter threshold:"), + 10, 1, 256, 1, &ok); + if (ok) { + int factor = 256 / threshold; + for (int y = 0; y < original.height(); ++y) { + for (int x = 0; x < original.width(); ++x) { + int pixel = original.pixel(x, y); + result.setPixel(x, y, qRgba(qRed(pixel) / factor * factor, + qGreen(pixel) / factor * factor, + qBlue(pixel) / factor * factor, + qAlpha(pixel))); + } + } + } + } + return result; +} -- cgit v1.2.3