diff options
Diffstat (limited to 'examples/widgets/tools/plugandpaint/app/paintarea.cpp')
| -rw-r--r-- | examples/widgets/tools/plugandpaint/app/paintarea.cpp | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/examples/widgets/tools/plugandpaint/app/paintarea.cpp b/examples/widgets/tools/plugandpaint/app/paintarea.cpp deleted file mode 100644 index e3292e3b91..0000000000 --- a/examples/widgets/tools/plugandpaint/app/paintarea.cpp +++ /dev/null @@ -1,199 +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 "paintarea.h" -#include "interfaces.h" - -#include <QMouseEvent> -#include <QPainter> - -PaintArea::PaintArea(QWidget *parent) : QWidget(parent) -{ - setAttribute(Qt::WA_StaticContents); - setAttribute(Qt::WA_OpaquePaintEvent); - - theImage.fill(qRgb(255, 255, 255)); -} - -bool PaintArea::openImage(const QString &fileName) -{ - QImage image; - if (!image.load(fileName)) - return false; - - setImage(image); - return true; -} - -bool PaintArea::saveImage(const QString &fileName, const char *fileFormat) -{ - return theImage.save(fileName, fileFormat); -} - -void PaintArea::setImage(const QImage &image) -{ - theImage = image.convertToFormat(QImage::Format_RGB32); - update(); - updateGeometry(); -} - -void PaintArea::insertShape(const QPainterPath &path) -{ - pendingPath = path; -#ifndef QT_NO_CURSOR - setCursor(Qt::CrossCursor); -#endif -} - -void PaintArea::setBrushColor(const QColor &color) -{ - this->color = color; -} - -void PaintArea::setBrushWidth(int width) -{ - thickness = width; -} - -//! [0] -void PaintArea::setBrush(BrushInterface *brushInterface, const QString &brush) -{ - this->brushInterface = brushInterface; - this->brush = brush; -} -//! [0] - -QSize PaintArea::sizeHint() const -{ - return theImage.size(); -} - -void PaintArea::paintEvent(QPaintEvent * /* event */) -{ - QPainter painter(this); - painter.drawImage(QPoint(0, 0), theImage); -} - -void PaintArea::mousePressEvent(QMouseEvent *event) -{ - if (event->button() == Qt::LeftButton) { - if (!pendingPath.isEmpty()) { - QPainter painter(&theImage); - setupPainter(painter); - - const QRectF boundingRect = pendingPath.boundingRect(); - QLinearGradient gradient(boundingRect.topRight(), - boundingRect.bottomLeft()); - gradient.setColorAt(0.0, QColor(color.red(), color.green(), - color.blue(), 63)); - gradient.setColorAt(1.0, QColor(color.red(), color.green(), - color.blue(), 191)); - painter.setBrush(gradient); - painter.translate(event->position().toPoint() - boundingRect.center()); - painter.drawPath(pendingPath); - - pendingPath = QPainterPath(); -#ifndef QT_NO_CURSOR - unsetCursor(); -#endif - update(); - } else { - if (brushInterface) { - QPainter painter(&theImage); - setupPainter(painter); - const QRect rect = brushInterface->mousePress(brush, painter, - event->position().toPoint()); - update(rect); - } - - lastPos = event->position().toPoint(); - } - } -} - -//! [1] -void PaintArea::mouseMoveEvent(QMouseEvent *event) -{ - if ((event->buttons() & Qt::LeftButton) && lastPos != QPoint(-1, -1)) { - if (brushInterface) { - QPainter painter(&theImage); - setupPainter(painter); - const QRect rect = brushInterface->mouseMove(brush, painter, lastPos, - event->position().toPoint()); - update(rect); - } - - lastPos = event->position().toPoint(); - } -} -//! [1] - -void PaintArea::mouseReleaseEvent(QMouseEvent *event) -{ - if (event->button() == Qt::LeftButton && lastPos != QPoint(-1, -1)) { - if (brushInterface) { - QPainter painter(&theImage); - setupPainter(painter); - QRect rect = brushInterface->mouseRelease(brush, painter, - event->position().toPoint()); - update(rect); - } - - lastPos = QPoint(-1, -1); - } -} - -void PaintArea::setupPainter(QPainter &painter) -{ - painter.setRenderHint(QPainter::Antialiasing, true); - painter.setPen(QPen(color, thickness, Qt::SolidLine, Qt::RoundCap, - Qt::RoundJoin)); -} |