diff options
Diffstat (limited to 'examples/widgets/tools/plugandpaint/plugins/basictools/basictoolsplugin.cpp')
| -rw-r--r-- | examples/widgets/tools/plugandpaint/plugins/basictools/basictoolsplugin.cpp | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/examples/widgets/tools/plugandpaint/plugins/basictools/basictoolsplugin.cpp b/examples/widgets/tools/plugandpaint/plugins/basictools/basictoolsplugin.cpp deleted file mode 100644 index 64f9f7a0d9..0000000000 --- a/examples/widgets/tools/plugandpaint/plugins/basictools/basictoolsplugin.cpp +++ /dev/null @@ -1,197 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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 "basictoolsplugin.h" - -#include <QInputDialog> -#include <QPainter> -#include <QRandomGenerator> -#include <QtMath> - -//! [0] -QStringList BasicToolsPlugin::brushes() const -{ - return {tr("Pencil"), tr("Air Brush"), tr("Random Letters")}; -} -//! [0] - -//! [1] -QRect BasicToolsPlugin::mousePress(const QString &brush, QPainter &painter, - const QPoint &pos) -{ - return mouseMove(brush, painter, pos, pos); -} -//! [1] - -//! [2] -QRect BasicToolsPlugin::mouseMove(const QString &brush, QPainter &painter, - const QPoint &oldPos, const QPoint &newPos) -{ - painter.save(); - - int rad = painter.pen().width() / 2; - QRect boundingRect = QRect(oldPos, newPos).normalized() - .adjusted(-rad, -rad, +rad, +rad); - QColor color = painter.pen().color(); - int thickness = painter.pen().width(); - QColor transparentColor(color.red(), color.green(), color.blue(), 0); -//! [2] //! [3] - - if (brush == tr("Pencil")) { - painter.drawLine(oldPos, newPos); - } else if (brush == tr("Air Brush")) { - int numSteps = 2 + (newPos - oldPos).manhattanLength() / 2; - - painter.setBrush(QBrush(color, Qt::Dense6Pattern)); - painter.setPen(Qt::NoPen); - - for (int i = 0; i < numSteps; ++i) { - int x = oldPos.x() + i * (newPos.x() - oldPos.x()) / (numSteps - 1); - int y = oldPos.y() + i * (newPos.y() - oldPos.y()) / (numSteps - 1); - - painter.drawEllipse(x - (thickness / 2), y - (thickness / 2), - thickness, thickness); - } - } else if (brush == tr("Random Letters")) { - QChar ch(QRandomGenerator::global()->bounded('A', 'Z' + 1)); - - QFont biggerFont = painter.font(); - biggerFont.setBold(true); - biggerFont.setPointSize(biggerFont.pointSize() + thickness); - painter.setFont(biggerFont); - - painter.drawText(newPos, QString(ch)); - - QFontMetrics metrics(painter.font()); - boundingRect = metrics.boundingRect(ch); - boundingRect.translate(newPos); - boundingRect.adjust(-10, -10, +10, +10); - } - painter.restore(); - return boundingRect; -} -//! [3] - -//! [4] -QRect BasicToolsPlugin::mouseRelease(const QString & /* brush */, - QPainter & /* painter */, - const QPoint & /* pos */) -{ - return QRect(0, 0, 0, 0); -} -//! [4] - -//! [5] -QStringList BasicToolsPlugin::shapes() const -{ - return {tr("Circle"), tr("Star"), tr("Text...")}; -} -//! [5] - -//! [6] -QPainterPath BasicToolsPlugin::generateShape(const QString &shape, - QWidget *parent) -{ - QPainterPath path; - - if (shape == tr("Circle")) { - path.addEllipse(0, 0, 50, 50); - } else if (shape == tr("Star")) { - path.moveTo(90, 50); - for (int i = 1; i < 5; ++i) { - path.lineTo(50 + 40 * std::cos(0.8 * i * M_PI), - 50 + 40 * std::sin(0.8 * i * M_PI)); - } - path.closeSubpath(); - } else if (shape == tr("Text...")) { - QString text = QInputDialog::getText(parent, tr("Text Shape"), - tr("Enter text:"), - QLineEdit::Normal, tr("Qt")); - if (!text.isEmpty()) { - QFont timesFont("Times", 50); - timesFont.setStyleStrategy(QFont::ForceOutline); - path.addText(0, 0, timesFont, text); - } - } - - return path; -} -//! [6] - -//! [7] -QStringList BasicToolsPlugin::filters() const -{ - return {tr("Invert Pixels"), tr("Swap RGB"), tr("Grayscale")}; -} -//! [7] - -//! [8] -QImage BasicToolsPlugin::filterImage(const QString &filter, const QImage &image, - QWidget * /* parent */) -{ - QImage result = image.convertToFormat(QImage::Format_RGB32); - - if (filter == tr("Invert Pixels")) { - result.invertPixels(); - } else if (filter == tr("Swap RGB")) { - result = result.rgbSwapped(); - } else if (filter == tr("Grayscale")) { - for (int y = 0; y < result.height(); ++y) { - for (int x = 0; x < result.width(); ++x) { - QRgb pixel = result.pixel(x, y); - int gray = qGray(pixel); - int alpha = qAlpha(pixel); - result.setPixel(x, y, qRgba(gray, gray, gray, alpha)); - } - } - } - return result; -} -//! [8] |